WO2021214999A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2021214999A1
WO2021214999A1 PCT/JP2020/017759 JP2020017759W WO2021214999A1 WO 2021214999 A1 WO2021214999 A1 WO 2021214999A1 JP 2020017759 W JP2020017759 W JP 2020017759W WO 2021214999 A1 WO2021214999 A1 WO 2021214999A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
suction port
air conditioner
air
fan
Prior art date
Application number
PCT/JP2020/017759
Other languages
French (fr)
Japanese (ja)
Inventor
弘恭 林
拓矢 寺本
亮 堀江
友博 永野
佑樹 原
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/017759 priority Critical patent/WO2021214999A1/en
Priority to JP2022516811A priority patent/JP7479453B2/en
Priority to EP20932608.1A priority patent/EP4141336A4/en
Priority to TW109139884A priority patent/TWI779393B/en
Publication of WO2021214999A1 publication Critical patent/WO2021214999A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling

Definitions

  • the present disclosure relates to an air conditioner having a centrifugal blower.
  • Some conventional air conditioners have a centrifugal blower having a heat exchanger and a scroll casing between the air inlet and the air outlet.
  • the fan housed in the scroll casing rotates, and the air sucked from the suction port of the air conditioner flows into the fan along the bell mouth formed in the suction port of the scroll casing. Then, the airflow discharged from the fan is boosted in the scroll casing, then discharged from the scroll casing, passed through the heat exchanger, and then discharged from the air outlet of the air conditioner to the air-conditioned space.
  • the scroll casing used in the air conditioner contains a fan, so it may be divided into two parts.
  • the scroll casing divided into two parts has a divided portion in which the two parts are joined to a member constituting the discharge port of the scroll casing in consideration of ease of production, and the scroll casing is opposite with the suction port of the scroll casing in between. It has a further divided portion on the side (see, for example, Patent Document 1).
  • the air conditioner of Patent Document 1 is also provided with a fixing portion on the wall surface of the scroll casing in the vicinity of each divided portion in order to fix the two divided parts to each other.
  • the present disclosure is for solving the above-mentioned problems, and an object of the present disclosure is to obtain an air conditioner that suppresses a reduction in the amount of gas flowing into the scroll casing of a centrifugal blower.
  • the air conditioner according to the present disclosure includes a centrifugal blower including a rotary-driven fan and a scroll casing in which the fan is housed and has a peripheral wall formed in a spiral shape and a side wall provided with an air suction port.
  • a drive source that applies driving force to the fan, a heat exchanger arranged at a position facing the air discharge port formed in the scroll casing, a centrifugal blower, a drive source, and a heat exchanger are housed in the fan.
  • a housing having a partition plate that separates the inside from the air blower chamber to be arranged and the heat exchange chamber in which the heat exchanger is arranged.
  • a first case comprising a housing outlet through which the outflowing air passes, and a housing in which the scroll casing has a discharge portion forming a discharge port, and the discharge portion is fixed to a partition plate.
  • a second case portion having a portion, a peripheral wall facing the housing suction port and detachably fixed to the first case portion, and a second case portion provided on the side wall to fix the first case portion and the second case portion.
  • the divided portion which has a fixed portion and is a joint portion between the first case portion and the second case portion, is formed on the side wall and the peripheral wall, and is formed on a portion other than the discharge portion to be fixed.
  • the portion is surrounded by the first virtual line, which is a virtual straight line connecting each of both ends of the housing suction port and the rotation shaft, and the housing suction port from the viewpoint seen in the axial direction of the fan rotation axis. It is provided in a part other than the area.
  • the centrifugal blower has a fixing portion for fixing the first case portion and the second case portion to each other.
  • This fixed portion is provided on the side wall, and is a first virtual line that is a virtual straight line connecting each of both ends of the housing suction port and the rotating shaft from the viewpoint seen in the axial direction of the rotating shaft of the fan. It is provided in a portion other than the area surrounded by the housing suction port.
  • the air conditioner since the position of the fixed portion is kept away from the housing suction port of the air conditioner, it is possible to suppress the interference between the fast airflow flowing in from the housing suction port and the fixed portion. Therefore, the air conditioner can suppress the separation of the airflow flowing through the bell mouth and suppress the decrease in the air volume of the gas flowing into the scroll casing.
  • FIG. 5 is a conceptual diagram of the inside of the centrifugal blower according to the first embodiment as viewed in the axial direction of the rotating shaft.
  • FIG. 5 is an external conceptual diagram of the centrifugal blower according to the first embodiment as viewed in the axial direction of the rotating shaft.
  • FIG. 5 is a perspective view which conceptually showed an example of the air-conditioning apparatus which concerns on Embodiment 1.
  • FIG. It is a conceptual diagram which shows an example of the internal structure of the air conditioner which concerns on Embodiment 1.
  • FIG. It is a side view which conceptually shows the internal structure of the modification of the air conditioner which concerns on Embodiment 1.
  • FIG. It is a conceptual diagram which looked at the centrifugal blower which concerns on a comparative example in the axial direction of the rotation axis. It is a divided conceptual diagram of the centrifugal blower which concerns on a comparative example. It is a conceptual diagram which shows an example of the internal structure of the air conditioner which concerns on a comparative example. It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 2.
  • FIG. It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 3.
  • FIG. 4 It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 4.
  • FIG. 5 It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 5.
  • Embodiment 6 It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 6.
  • FIG. 1 is a perspective view of the centrifugal blower 1 according to the first embodiment.
  • FIG. 2 is a conceptual diagram of the inside of the centrifugal blower 1 according to the first embodiment as viewed in the axial direction of the rotating shaft RS.
  • FIG. 3 is an external conceptual diagram of the centrifugal blower 1 according to the first embodiment as viewed in the axial direction of the rotating shaft RS. Note that FIG. 2 omits the illustration of the bell mouth 3 in order to explain the internal structure of the centrifugal blower 1.
  • the centrifugal blower 1 is a double suction type centrifugal blower 1 in which air is sucked from both sides in the axial direction of the rotating shaft RS of the fan 2. Since the configuration of the centrifugal blower 1 has the same configuration on one surface side and the other surface side of the main plate 2a, the configuration of the centrifugal blower 1 will be described with reference to FIG. The illustration of the configuration of the blower 1 is omitted.
  • the centrifugal blower 1 is, for example, a multi-blade centrifugal type centrifugal blower 1 such as a sirocco fan or a turbo fan.
  • the centrifugal blower 1 has a fan 2 for generating an air flow and a scroll casing 4 in which the fan 2 is housed.
  • the fan 2 is rotationally driven by a motor or the like (not shown), and forcibly sends air outward in the radial direction by a centrifugal force generated by the rotation.
  • the fan 2 has a disk-shaped main plate 2a and a plurality of blades 2d installed on the peripheral edge portion 2a1 of the main plate 2a.
  • the main plate 2a may have a plate shape, and may have a shape other than a disk shape, such as a polygonal shape.
  • a shaft portion 2b to which a motor (not shown) is connected is provided at the center of the main plate 2a.
  • the main plate 2a is rotationally driven by a motor via the shaft portion 2b.
  • the plurality of blades 2d are arranged on the circumference centered on the shaft portion 2b, and the base end is fixed to the main plate 2a.
  • the plurality of blades 2d are provided on both sides of the main plate 2a in the axial direction of the rotation shaft RS of the fan 2.
  • the blades 2d are arranged at a certain distance from each other on the peripheral edge portion 2a1 of the main plate 2a.
  • Each blade 2d is formed, for example, in the shape of a curved rectangular plate, and is installed along the radial direction or inclined at a predetermined angle with respect to the radial direction.
  • Each blade 2d is formed so that the same cross-sectional shape is a two-dimensional blade continuous in the axial direction of the rotation axis RS, but it may be a three-dimensional blade having a twisted shape. Further, although each blade 2d is provided so as to stand up substantially perpendicular to the main plate 2a, the present invention is not limited to this, and each blade 2d is provided so as to be inclined with respect to the vertical direction of the main plate 2a. You may.
  • the fan 2 has an annular side plate (not shown) at the ends of the plurality of blades 2d in the axial direction of the rotating shaft RS.
  • the end of the blade 2d to which the side plate is attached is the end of the blade 2d on the side opposite to the side connected to the main plate 2a.
  • the side plate maintains the positional relationship of the tips of the respective blades 2d by connecting the plurality of blades 2d, and reinforces the plurality of blades 2d.
  • the fan 2 is formed in a tubular shape by a plurality of blades 2d arranged on the main plate 2a. Then, the fan 2 has a suction port 2e for allowing gas to flow into the space surrounded by the main plate 2a and the plurality of blades 2d at the end of the blade 2d opposite to the main plate 2a in the axial direction of the rotation shaft RS. Is formed.
  • blades 2d are arranged on both sides of the plate surface forming the main plate 2a, and suction ports 2e are formed on both sides of the plate surface forming the main plate 2a.
  • the fan 2 is rotationally driven around the rotation axis RS by being driven by a motor (not shown).
  • a motor not shown.
  • the fan 2 rotates, the gas outside the centrifugal blower 1 flows along the bell mouth 3, passes through the suction port 5 formed in the scroll casing 4 and the suction port 2e of the fan 2, and is connected to the main plate 2a. It is sucked into the space surrounded by the blade 2d. Then, as the fan 2 rotates, the air sucked into the space surrounded by the main plate 2a and the plurality of blades 2d passes between the blades 2d and the adjacent blades 2d and is sent out in the radial direction.
  • the scroll casing 4 houses the fan 2 inside.
  • the scroll casing 4 rectifies the air blown from the fan 2.
  • the scroll casing 4 is made of resin, but the scroll casing 4 is not limited to that of resin.
  • the scroll casing 4 has a scroll portion 41 and a discharge portion 42.
  • the scroll unit 41 forms an air passage that converts the dynamic pressure of the air flow generated by the fan 2 into a static pressure.
  • the scroll portion 41 is a side wall 4a that covers the fan 2 from the axial direction of the rotating shaft RS of the shaft portion 2b constituting the fan 2, and has a side wall 4a formed with a suction port 5 for taking in air and a diameter of the rotating shaft RS. It has a peripheral wall 4c that surrounds the fan 2 from the direction.
  • the scroll portion 41 is located between the discharge portion 42 and the winding start portion 41a of the peripheral wall 4c to form a curved surface, and is a throttle portion necessary for blowing out the air flowing in from the suction port 5 in the centrifugal direction and boosting the pressure. It has a tongue portion 43 which is.
  • the radial direction of the rotation axis RS is a direction perpendicular to the rotation axis RS.
  • the internal space of the scroll portion 41 composed of the peripheral wall 4c and the side wall 4a is a space in which the air blown from the fan 2 flows along the peripheral wall 4c.
  • the side walls 4a are arranged on both sides of the fan 2 in the axial direction of the rotation axis RS of the fan 2. As shown in FIGS. 1 and 3, a suction port 5 for taking in air is formed on the side wall 4a of the scroll casing 4 so that air can flow between the fan 2 and the outside of the scroll casing 4. There is.
  • the suction port 5 is formed in a circular shape, and the fan 2 is arranged so that the center of the suction port 5 and the center of the shaft portion 2b of the fan 2 substantially coincide with each other.
  • the shape of the suction port 5 is not limited to a circular shape, and may be another shape such as an elliptical shape.
  • the scroll casing 4 of the centrifugal blower 1 is a double suction type casing having side walls 4a having suction ports 5 formed on both sides of the main plate 2a in the axial direction of the rotation shaft RS of the fan 2.
  • the scroll casing 4 has two side walls 4a, and the two side walls 4a are arranged so as to face each other.
  • the scroll casing 4 has a first side wall 4a1 and a second side wall 4a2 as the side wall 4a.
  • the first side wall 4a1 is formed along the first end portion 4c11 which is one end of the peripheral wall 4c in the axial direction of the rotating shaft RS
  • the second side wall 4a2 is the other of the peripheral wall 4c in the axial direction of the rotating shaft RS. It is formed along the second end portion 4c12 which is the end portion of the above.
  • a suction port 5 facing one plate surface of the main plate 2a is formed on the first side wall 4a1.
  • the second side wall 4a2 is formed with a suction port 5 facing the other plate surface of the main plate 2a.
  • the air suction port 5 provided on the side wall 4a is formed by the bell mouth 3 as shown in FIGS. 1 and 3.
  • the bell mouth 3 rectifies the gas sucked into the fan 2 and causes the gas to flow into the suction port 2e of the fan 2.
  • the bell mouth 3 is formed so that the opening diameter gradually decreases from the outside to the inside of the scroll casing 4. Due to the side wall 4a having this configuration, the air in the vicinity of the suction port 5 flows smoothly along the bell mouth 3 and efficiently flows into the fan 2 from the suction port 5.
  • the peripheral wall 4c is a wall provided between the side walls 4a facing each other, and forms a curved surface in the rotation direction R of the fan 2.
  • the peripheral wall 4c guides the airflow generated by the fan 2 along the curved wall surface to the discharge port 42a via the scroll portion 41.
  • the peripheral wall 4c is arranged parallel to the axial direction of the rotation axis RS of the fan 2, for example, and covers the fan 2.
  • the peripheral wall 4c may be inclined with respect to the axial direction of the rotating shaft RS of the fan 2, and is not limited to the form arranged parallel to the axial direction of the rotating shaft RS.
  • the peripheral wall 4c covers the fan 2 in the radial direction with respect to the rotating shaft RS, and constitutes an inner peripheral surface facing the plurality of blades 2d.
  • the peripheral wall 4c faces the air blowing side of the blade 2d of the fan 2.
  • the peripheral wall 4c scrolls with the discharge portion 42 on the side away from the tongue portion 43 along the rotation direction R of the fan 2 from the winding start portion 41a located at the boundary with the tongue portion 43. It is provided up to the winding end 41b located at the boundary with the portion 41.
  • the winding start portion 41a is an upstream end portion of the airflow generated by the rotation of the fan 2 on the peripheral wall 4c constituting the curved surface
  • the winding end portion 41b is a downstream end portion of the airflow generated by the rotation of the fan 2. It is the end.
  • the peripheral wall 4c is formed in a spiral shape in the rotation direction R.
  • the spiral shape include a logarithmic spiral, an Archimedes spiral, a spiral shape based on an involute curve, and the like.
  • the inner peripheral surface of the peripheral wall 4c constitutes a curved surface that smoothly curves along the circumferential direction of the fan 2 from the winding start portion 41a, which is the start of spiral winding, to the winding end portion 41b, which is the end of spiral winding.
  • the discharge unit 42 forms a discharge port 42a that is generated by the fan 2 and discharges the airflow that has passed through the scroll unit 41.
  • the discharge portion 42 is composed of a hollow pipe having a rectangular cross section orthogonal to the flow direction of the air flowing along the peripheral wall 4c.
  • the cross-sectional shape of the discharge portion 42 is not limited to a rectangle.
  • the discharge unit 42 forms a flow path that guides the air that is sent out from the fan 2 and flows in the gap between the peripheral wall 4c and the fan 2 so as to be discharged to the outside of the scroll casing 4.
  • the discharge portion 42 has an extension plate 42b, a diffuser plate 42c, a first side wall 4a1, and a second side wall 4a2.
  • the extension plate 42b is formed so as to extend from the winding end 41b of the peripheral wall 4c, and is a plate-shaped portion integrally formed with the peripheral wall 4c.
  • the diffuser plate 42c is a plate-shaped portion that is integrally formed with the tongue portion 43 of the scroll casing 4 and is arranged so as to face the extension plate 42b.
  • the diffuser plate 42c is formed at a predetermined angle with the extending plate 42b so that the cross-sectional area of the flow path gradually expands along the air flow direction in the discharge portion 42.
  • the extension plate 42b and the diffuser plate 42c are formed between the first side wall 4a1 and the second side wall 4a2. As described above, the discharge portion 42 is formed as a flow path having a rectangular cross section by the extending plate 42b, the diffuser plate 42c, the first side wall 4a1 and the second side wall 4a2.
  • the tongue portion 43 is formed between the diffuser plate 42c of the discharge portion 42 and the winding start portion 41a of the peripheral wall 4c.
  • the tongue portion 43 is formed with a predetermined radius of curvature, and the peripheral wall 4c is smoothly connected to the diffuser plate 42c via the tongue portion 43.
  • the tongue portion 43 suppresses the inflow of air from the winding end to the winding start of the spiral flow path formed in the scroll casing 4.
  • the tongue portion 43 is provided in the upstream portion of the ventilation passage, and has a role of separating the air flow in the rotation direction R of the fan 2 and the air flow in the discharge direction from the downstream portion of the ventilation passage toward the discharge port 42a.
  • the static pressure of the air flow flowing into the discharge portion 42 increases while passing through the scroll casing 4, and the pressure becomes higher than that in the scroll casing 4. Therefore, the tongue portion 43 has a function of partitioning such a pressure difference.
  • the scroll casing 4 has a first case portion 45, a second case portion 46, and a fixing portion 20.
  • the scroll casing 4 can be divided into a first case portion 45 and a second case portion 46. That is, the scroll casing 4 is configured by combining the first case portion 45 and the second case portion 46.
  • the first case portion 45 has a part of the scroll portion 41 and a discharge portion 42 forming the discharge port 42a.
  • the first case portion 45 has a part of the peripheral wall 4c and a part of the side wall 4a. Further, the first case portion 45 has a part of the bell mouth 3.
  • the second case portion 46 is composed of a part of the scroll portion 41.
  • the second case portion 46 has a part of the peripheral wall 4c and a part of the side wall 4a. Further, the second case portion 46 has a part of the bell mouth 3.
  • the second case portion 46 is detachably fixed to the first case portion 45. When the second case portion 46 is removed from the first case portion 45, the fan 2 is exposed.
  • an annular bell mouth 3 is formed when viewed in parallel with the axial direction of the rotation axis RS. That is, when viewed parallel to the axial direction of the rotating shaft RS, the suction port 5 of the scroll casing 4 is formed by combining the first case portion 45 and the second case portion 46.
  • the scroll casing 4 contains the fan 2, it has a split portion 60 for convenience of assembly.
  • the split portion 60 which is a joint portion between the first case portion 45 and the second case portion 46, is formed at the side wall 4a and the peripheral wall 4c in the scroll casing 4. Further, the split portion 60 is formed in a portion other than the discharge portion 42. More specifically, the dividing portion 60 is provided in a portion other than the region SA between the winding start portion 41a, which is the winding start portion of the scroll casing 4, and the discharge port 42a, in the direction in which the air flowing through the discharge portion 42 flows. It is formed.
  • the region SA is a region between the edge portion 42d and the boundary portion 42e as shown in FIG. 3 when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2.
  • the edge portion 42d is an end edge portion of the side wall 4a forming the discharge port 42a.
  • the boundary portion 42e is a virtual straight line portion including the winding start portion 41a when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2, and is a virtual straight line portion parallel to the edge portion 42d. ..
  • the parallelism between the boundary portion 42e and the edge portion 42d means that the boundary portion 42e and the edge portion 42d are completely parallel to each other and the boundary portion 42e and the edge portion 42d are substantially parallel to each other. It includes.
  • the split portion 60 includes a first split portion 61 formed on the upstream side of the air flow and an air flow in the direction in which the air flowing inside the peripheral wall 4c shown by the air flow AR in FIG. 2 flows. It has a second divided portion 62 formed on the downstream side of the above.
  • the first case portion 45 and the second case portion 46 are joined in the two division portions 60 of the first division portion 61 and the second division portion 62.
  • the scroll casing 4 is divided into two components, a first case portion 45 and a second case portion 46, in the two division portions 60 of the first division portion 61 and the second division portion 62.
  • the scroll casing 4 is provided with a fixed portion 20 in the divided portion 60.
  • the fixing portion 20 is used to fix the first case portion 45 and the second case portion 46 to each other.
  • the fixing portion 20 is provided on the side wall 4a of the scroll casing 4.
  • the fixing portion 20 has a first fixing portion 20A and a second fixing portion 20B.
  • the first fixed portion 20A is provided in the first divided portion 61
  • the second fixed portion 20B is provided in the second divided portion 62. That is, the first fixed portion 20A is provided on the upstream side of the air flow with respect to the second fixed portion 20B in the direction in which the air flowing inside the peripheral wall 4c shown by the air flow AR in FIG. 2 flows, and the second fixed portion 20A is provided.
  • 20B is provided on the downstream side of the air flow with respect to the first fixed portion 20A.
  • the fixing portion 20 is formed, for example, by fitting and joining the first engaging portion 21 provided in the first case portion 45 and the second engaging portion 22 provided in the second case portion 46. Will be done.
  • the fixing portion 20 may be formed by screwing the first engaging portion 21 provided in the first case portion 45 and the second engaging portion 22 provided in the second case portion 46 to each other. ..
  • the configuration of the fixing portion 20 is not limited to these configurations.
  • FIG. 4 is a perspective view conceptually showing an example of the air conditioner 40 according to the first embodiment.
  • FIG. 5 is a conceptual diagram showing an example of the internal configuration of the air conditioner 40 according to the first embodiment.
  • FIG. 6 is a side view conceptually showing an example of the internal configuration of the air conditioner 40 according to the first embodiment.
  • the structure of the upper part such as the upper surface part 16a is omitted.
  • the air conditioner 40 provided with the centrifugal blower 1 will be described with reference to FIGS. 4 to 6.
  • the air conditioning device 40 is a device that harmonizes the air in the air-conditioned space, adjusts the temperature and humidity of the sucked air, and discharges the air into the air-conditioned space.
  • the air conditioner 40 is a ceiling-suspended device that is suspended from the ceiling, but the air conditioner 40 is not limited to the ceiling-suspended device.
  • the air conditioner 40 is arranged at a position facing the centrifugal blower 1, the drive source 6 that applies a driving force to the fan 2 of the centrifugal blower 1, and the air discharge port 42a formed in the scroll casing 4 of the centrifugal blower 1.
  • the heat exchanger 10 is provided. Further, the air conditioner 40 includes a housing 16 that houses the centrifugal blower 1, the drive source 6, and the heat exchanger 10 inside and is installed on the ceiling of the air-conditioned space. Further, the air conditioner 40 may have the heat insulating material 13 in the heat exchange chamber 26 described later.
  • the housing 16 is formed in a box shape, and is formed in a rectangular parallelepiped shape including an upper surface portion 16a, a lower surface portion 16b, and a side surface portion 16c.
  • the shape of the housing 16 is not limited to a rectangular parallelepiped shape, and other shapes such as a cylindrical shape, a prismatic shape, a conical shape, a shape having a plurality of corners, and a shape having a plurality of curved surfaces. It may be.
  • the housing 16 has an inlet wall portion 16c1 in which the housing suction port 18 is formed as one of the side surface portions 16c.
  • a filter for removing dust in the air may be arranged at the housing suction port 18.
  • the housing 16 has an outlet wall portion 16c2 in which the housing outlet 17 is formed as one of the side surface portions 16c.
  • the inlet wall portion 16c1 and the outlet wall portion 16c2 form side wall surfaces located on opposite sides to each other via the heat exchanger 10 and the centrifugal blower 1.
  • the housing suction port 18 may be formed at a position perpendicular to the axial direction of the rotation axis RS of the centrifugal blower 1, and for example, the housing suction port 18 may be formed on the lower surface portion 16b.
  • the arrow IR shown in FIG. 6 indicates the air sucked into the housing suction port 18.
  • the arrow OR shown in FIG. 6 indicates the air blown out from the housing outlet 17.
  • the shapes of the housing outlet 17 and the housing suction port 18 are formed in a rectangular shape as shown in FIGS. 4 and 5.
  • the shapes of the housing outlet 17 and the housing suction port 18 are not limited to a rectangular shape, and may be, for example, a circular shape, an oval shape, or any other shape.
  • the air blowing chamber 25, which is the space on the suction side of the scroll casing 4, and the heat exchange chamber 26, which is the space on the blowout side of the scroll casing 4, are separated by a partition plate 19. That is, the partition plate 19 divides the internal space of the housing 16 into a blower chamber 25 in which the fan 2 is arranged and a heat exchange chamber 26 in which the heat exchanger 10 is arranged. As shown in FIG. 5, a drive source 6, two centrifugal blowers 1, and a heat exchanger 10 are housed inside the housing 16.
  • the drive source 6 is, for example, a motor.
  • the drive source 6 is supported by a motor support 9a fixed to the upper surface portion 16a of the housing 16.
  • the drive source 6 has an output shaft 6a.
  • the output shaft 6a is arranged so as to extend parallel to the inlet wall portion 16c1 in which the housing suction port 18 is formed and the outlet wall portion 16c2 in which the housing outlet 17 is formed.
  • the centrifugal blower 1 includes a fan 2 and a scroll casing 4 on which a bell mouth 3 is formed. In the centrifugal blower 1, as shown in FIGS. 5 and 6, the discharge portion 42 of the scroll casing 4 is fixed to the partition plate 19.
  • each fan 2 of the two centrifugal blowers 1 is attached to the output shaft 6a.
  • the centrifugal blower 1 having a fan 2 forms a flow of air that is sucked into the housing 16 from the housing suction port 18 and blown out from the housing outlet 17 to the air-conditioned space.
  • the number of centrifugal blowers 1 arranged in the housing 16 is not limited to two, and may be one or three or more.
  • the second case portion 46 of the scroll casing 4 has a peripheral wall 4c facing the housing suction port 18. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
  • the end portions 18a and both ends of the end portion 18b of the housing suction port 18 are connected to the rotation shaft RS.
  • the virtual straight line is defined as the first virtual line CL.
  • the end portion 18a is the upper end portion of the housing suction port 18, and the end portion 18b is the lower end portion of the housing suction port 18.
  • the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. do.
  • the fixed portion 20 of the centrifugal blower 1 has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
  • the first fixed portion 20A is provided on the opposite side of the second fixed portion 20B via the rotation shaft RS.
  • the second fixing portion 20B is provided on the opposite side of the first fixing portion 20A via the rotation shaft RS.
  • the positional relationship between the first fixed portion 20A and the second fixed portion 20B is not limited to this relationship.
  • first division portion 61 is provided on the opposite side of the second division portion 62 via the rotation shaft RS.
  • the second division portion 62 is provided on the opposite side of the first division portion 61 via the rotation shaft RS.
  • the positional relationship between the first division portion 61 and the second division portion 62 is not limited to this relationship.
  • the heat exchanger 10 is arranged at a position facing the discharge port 42a of the centrifugal blower 1, and is arranged in the housing 16 on the air passage of the air discharged by the centrifugal blower 1.
  • the heat exchanger 10 adjusts the temperature of the air that is sucked into the housing 16 from the housing suction port 18 and blown out from the housing outlet 17 into the air-conditioned space.
  • a heat exchanger 10 having a known structure can be applied as the heat exchanger 10.
  • the air conditioner 40 is directed from the housing inlet 18 of the air conditioner 40 toward the housing outlet 17, the housing suction port 18, the scroll casing 4 of the centrifugal blower 1, the heat exchanger 10, and the housing outlet 17. They are arranged in the order of. In the case of the ceiling-suspended air conditioner 40, these components are arranged in the horizontal direction.
  • FIG. 7 is a side view conceptually showing the internal configuration of a modified example of the air conditioner 40 according to the first embodiment.
  • the region SA is, as an example, between the edge portion 42d and the boundary portion 42e when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2, as shown in FIG. Explained that it is an area.
  • the region SA is not limited to the region.
  • it passes through the winding start portion 41a of the scroll casing 4 and is perpendicularly between the upper surface portion 16a forming the upper surface of the housing 16 and the lower surface portion 16b forming the lower surface of the housing 16.
  • the connected virtual line is defined as the virtual line FL.
  • the area SA may be the area of the scroll casing 4 formed between the virtual line FL and the discharge port 42a.
  • the air blown out from the fan 2 is boosted while passing through the inside of the scroll casing 4.
  • the boosted air is blown out from the discharge port 42a of the scroll casing 4 and supplied to the heat exchanger 10.
  • the air supplied to the heat exchanger 10 passes through the heat exchanger 10, it exchanges heat with a heat exchange medium such as a refrigerant flowing inside the heat exchanger 10, and the temperature and humidity are adjusted.
  • the air that has passed through the heat exchanger 10 is blown out from the housing outlet 17 into the air-conditioned space.
  • the centrifugal blower 1 has a fixing portion 20 for fixing the first case portion 45 and the second case portion 46 to each other.
  • the fixing portion 20 is provided on the side wall 4a.
  • the fixed portion 20 is a first virtual line CL which is a virtual straight line connecting each of both ends of the housing suction port 18 and the rotating shaft RS from the viewpoint seen in the axial direction of the rotating shaft RS of the fan 2.
  • the air conditioner 40 since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioning device 40, interference between the fast airflow flowing from the housing suction port 18 and the fixing portion 20 is suppressed. can do. Therefore, the air conditioner 40 can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
  • FIG. 8 is a conceptual diagram of the centrifugal blower 1L according to the comparative example as viewed in the axial direction of the rotating shaft RS.
  • FIG. 9 is a divided conceptual diagram of the centrifugal blower 1L according to the comparative example.
  • FIG. 10 is a conceptual diagram showing an example of the internal configuration of the air conditioner 40L according to the comparative example. The centrifugal blower 1L and the air conditioner 40L according to the comparative example will be described with reference to FIGS. 8 to 10.
  • the air conditioner 40L according to the comparative example has a centrifugal blower 1L.
  • the scroll casing 4L of the centrifugal blower 1L is divided into two parts, a lower case portion 47L and an upper case portion 48L, in order to include the fan 2.
  • the scroll casing 4L divided into two parts, the lower case portion 47L and the upper case portion 48L has a divided portion 60L in which the two parts are joined to the discharge portion 42L constituting the discharge port 42a of the scroll casing 4L. ..
  • the scroll casing 4L has a further division portion 60L on the opposite side of the division portion 60 of the discharge portion 42L with the suction port 5 of the scroll casing 4L interposed therebetween.
  • the centrifugal blower 1L according to the comparative example is in the vicinity of each of the divided portions 60L in order to fix the two divided lower case portions 47L and the upper case portion 48L to each other, and is fixed to the side wall surface of the scroll casing 4L. 20L is provided.
  • the airflow has a velocity distribution in the circumferential direction of the rotation axis of the fan, and the air conditioner has a velocity distribution.
  • the wind speed increases on the suction port side. Therefore, as shown in the area surrounded by the dotted line BD in FIG. 10, in the air conditioner 40L according to the comparative example, the fixed portion 20L provided on the housing suction port 18 side of the air conditioner 40L and the airflow AR are There is a risk of interference.
  • the air flow AR flowing through the bell mouth is separated due to the interference between the fixed portion 20L provided on the housing suction port 18 side and the air flow AR, and the air volume of the gas flowing into the scroll casing 4L is reduced. May be done.
  • the air conditioner 40 since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioner 40 by the above-described configuration, the air conditioner 40 flows in from the housing suction port 18. It is possible to suppress the interference between the air flow having a high speed and the fixed portion 20. Therefore, the air conditioner 40 can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
  • the air conditioner 40L according to the comparative example generates noise by interfering between the fixed portion 20L provided on the housing suction port 18 side and the airflow AR, and increases the noise emitted from the air conditioner 40L. There is a fear.
  • the air conditioner 40 since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioner 40 by the above-described configuration, the air conditioner 40 flows in from the housing suction port 18. It is possible to suppress the interference between the air flow having a high speed and the fixed portion 20. Therefore, the air conditioner 40 can suppress the generation of noise caused by the interference between the fast airflow flowing in from the housing suction port 18 and the fixed portion 20, and is air-conditioned as compared with the air conditioner 40L according to the comparative example. The noise emitted from the device 40 can be reduced.
  • the airflow flowing in the scroll casing is boosted while heading toward the discharge port of the scroll casing.
  • the air conditioner 40L according to the comparative example since the split portion 60L is provided in the discharge portion 42L constituting the discharge port 42a of the scroll casing 4L, the boosted and high-pressure air is discharged from the split portion 60L of the discharge portion 42L. It becomes easy to leak.
  • a division portion 60 is formed in a portion other than the discharge portion 42.
  • the split portion 60 is compared with the air conditioner 40L according to the comparative example. Air leakage can be suppressed.
  • the air conditioner 40 according to the first embodiment has a region SA between the winding start portion 41a, which is the winding start portion of the scroll casing 4, and the discharge port 42a in the direction in which the air flowing through the discharge portion 42 flows.
  • the divided portion 60 is formed in a portion other than the above. That is, the divided portion 60 of the air conditioner 40 according to the first embodiment is not formed in the discharge portion 42.
  • the split portion 60 since the split portion 60 is not formed in the discharge portion 42 through which the high-pressure air passes, the split portion 60 is compared with the air conditioner 40L according to the comparative example. Air leakage can be suppressed.
  • the inlet wall portion 16c1 in which the housing suction port 18 is formed and the outlet wall portion 16c2 in which the housing outlet 17 is formed are connected to each other via the heat exchanger 10 and the centrifugal blower 1. It constitutes a side wall surface located on the opposite side. Therefore, in the air conditioner 40, the inlet wall portion 16c1, the centrifugal blower 1, the heat exchanger 10, and the outlet wall portion 16c2 can be arranged in the horizontal direction, and the housing can be arranged from the housing suction port 18 to the housing.
  • the air passage to the air outlet 17 can be constructed with a simple configuration. Further, the air conditioner 40 can arrange these components in a direction along the horizontal direction, and can be used, for example, in a ceiling-suspended air conditioner.
  • FIG. 11 is a side view conceptually showing an example of the internal configuration of the air conditioner 40A according to the second embodiment.
  • the parts having the same configuration as the air conditioner 40 of FIGS. 1 to 10 are designated by the same reference numerals, and the description thereof will be omitted.
  • the air conditioner 40A according to the second embodiment further specifies the positions of the divided portion 60 and the fixed portion 20 of the stored centrifugal blower 1A. Therefore, in the following description, the configuration relating to the positions of the split portion 60 and the fixed portion 20 of the centrifugal blower 1A will be mainly described with reference to FIG.
  • the configuration of the air conditioner 40A and the centrifugal blower 1A according to the second embodiment is the same as the configuration of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment unless otherwise specified.
  • the split portion 60 of the centrifugal blower 1A has a first split portion 61 formed on the upstream side and a second split portion 62 formed on the downstream side in the direction in which the air flowing inside the peripheral wall 4c flows. Then, in the air conditioner 40A, between the housing suction port 18 and the housing outlet 17, either the first division portion 61 or the second division portion 62 has the housing outlet 17 with respect to the other. It is formed at a position close to. That is, the first division portion 61 and the second division portion 62 of the centrifugal blower 1A are not positioned on a straight line as in the first embodiment, but are formed at positions shifted from each other in the left-right direction.
  • a fixed portion 20 is provided in the divided portion 60 of the air conditioner 40A. Therefore, in the air conditioner 40A, between the housing suction port 18 and the housing outlet 17, either the first fixing portion 20A or the second fixing portion 20B has the housing outlet 17 with respect to the other. It is formed at a position close to. That is, the first fixing portion 20A and the second fixing portion 20B of the centrifugal blower 1A are formed at positions shifted from each other in the left-right direction.
  • the portion of the first division portion 61 located at the inner edge portion of the suction port 5 is defined as the first inner edge portion 5a, and the suction port in the second division portion 62.
  • the portion located at the inner edge portion of 5 is defined as the second inner edge portion 5b.
  • the second virtual line TL which is a virtual straight line connecting the first inner edge portion 5a and the second inner edge portion 5b, is formed from the rotation axis RS from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. May be formed at a position close to the housing outlet 17.
  • the air conditioner 40A has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
  • one of the first division portion 61 and the second division portion 62 approaches the housing outlet 17 with respect to the other between the housing suction port 18 and the housing outlet 17. It is formed in a vertical position.
  • either one of the first fixing portion 20A and the second fixing portion 20B is formed far from the housing suction port 18.
  • the velocity of the air flow that interferes with the fixed portion 20 formed far from the housing suction port 18 becomes low. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40A suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do. Further, since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the air conditioner 40A can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40A can be reduced.
  • the balance of the surface areas of the first case portion 45 and the second case portion 46 is taken into consideration.
  • the air conditioner 40A has the above configuration, the distance between the fixing portion 20 and the housing suction port 18 can be secured while balancing the surface areas of the first case portion 45 and the second case portion 46.
  • the scroll casing 4 may be formed at a position where the second virtual line TL is closer to the housing outlet 17 than the rotation axis RS.
  • the first fixing portion 20A and the second fixing portion 20B are formed on opposite sides of each other via the rotation shaft RS. Both 20A and the second fixing portion 20B are formed far from the housing suction port 18.
  • the velocity of the airflow that interferes with the fixed portion 20 becomes low. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40A suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do. Further, since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the air conditioner 40A can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40A can be reduced.
  • FIG. 12 is a side view conceptually showing an example of the internal configuration of the air conditioner 40B according to the third embodiment.
  • the parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 11 are designated by the same reference numerals, and the description thereof will be omitted.
  • the air conditioner 40B according to the third embodiment further specifies the configuration of the divided portion 60 of the stored centrifugal blower 1B. Therefore, in the following description, the configuration of the split portion 60 of the centrifugal blower 1B will be mainly described with reference to FIG. Unless otherwise specified, the configurations of the air conditioner 40B and the centrifugal blower 1B according to the third embodiment are the same as the configurations of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment.
  • the centrifugal blower 1B has a scroll casing 4B.
  • the peripheral wall 4c of the scroll casing 4B has a flat surface portion 65 in which a part of the wall is formed in a flat plate shape.
  • the flat surface portion 65 is formed in a flat shape on a part of the peripheral wall 4c formed in a spiral shape.
  • the flat surface portion 65 is formed in a straight line from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2.
  • the scroll casing 4B is formed so that the dividing portion 60 divides the flat surface portion 65. That is, the flat surface portion 65 is formed in the divided portion 60.
  • the flat surface portion 65 formed in the first divided portion 61 and the flat surface portion 65 formed in the second divided portion 62 are formed in parallel from the viewpoint viewed in the axial direction of the rotation axis RS of the fan 2. May be good.
  • the scroll casing 4 is not limited to the configuration in which the flat surface portion 65 of the first divided portion 61 and the flat surface portion 65 of the second divided portion 62 are formed in parallel.
  • the air conditioner 40B has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
  • the scroll casing 4B is formed so that the divided portion 60 divides the flat surface portion 65.
  • the first case portion 45 and the second case portion 46 are removed from the mold because the divided portion 60 has the flat surface portion 65. It is easy to manufacture the air conditioner 40B.
  • the flat surface portion 65 formed in the first divided portion 61 and the flat surface portion 65 formed in the second divided portion 62 are formed in parallel from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. Has been done.
  • the first case portion 45 and the second case portion 46 made of resin if the flat portion 65 of the first division portion 61 and the flat portion 65 of the second division portion 62 are formed in parallel, the first case portion is further formed.
  • the 45 and the second case portion 46 can be easily removed from the mold, and the manufacturing work of the air conditioner 40B becomes easy.
  • FIG. 13 is a side view conceptually showing an example of the internal configuration of the air conditioner 40C according to the fourth embodiment.
  • the parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 12 are designated by the same reference numerals, and the description thereof will be omitted.
  • the air conditioner 40C according to the fourth embodiment further specifies the positions of the divided portion 60 and the fixed portion 20 of the stored centrifugal blower 1C. Therefore, in the following description, the configuration relating to the positions of the split portion 60 and the fixed portion 20 of the centrifugal blower 1C will be mainly described with reference to FIG.
  • the configuration of the air conditioner 40C and the centrifugal blower 1C according to the fourth embodiment is the same as the configuration of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment unless otherwise specified.
  • the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2.
  • the fixed portion 20 of the centrifugal blower 1C has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
  • the first reference line SL1 which is a virtual straight line connecting the winding start portion 41a and the rotation axis RS. 1
  • the position at the center of the winding start portion 41a and the rotation axis RS is defined as the intermediate position M1.
  • a virtual straight line extending in the vertical direction including the intermediate position M1 is defined as the second reference line SL2.
  • the second reference line SL2 is, for example, a line along the weight direction.
  • the fixing portion 20 is provided on the side wall 4a located between the second reference line SL2 and the housing suction port 18. Therefore, as shown in FIG. 13, the fixing portion 20 is provided in the region SC between the region SB and the second reference line SL2 on the side wall 4a.
  • the air conditioner 40C has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
  • the fixing portion 20 is provided on the side wall 4a located between the second reference line SL2 and the housing suction port 18.
  • the air conditioner 40C since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioning device 40C, interference between the fast airflow flowing in from the housing suction port 18 and the fixing portion 20 is suppressed. can do. Therefore, the air conditioner 40C can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
  • the centrifugal blower 1C has the first case portion 45 and the second case portion 46.
  • the surface area of the can be balanced.
  • FIG. 14 is a side view conceptually showing an example of the internal configuration of the air conditioner 40D according to the fifth embodiment.
  • the parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 13 are designated by the same reference numerals, and the description thereof will be omitted.
  • the formation position of the housing suction port 18 in the housing 16D is different from the formation position of the housing suction port 18 of the air conditioner 40 according to the first embodiment. ..
  • the relationship between the housing 16D and the centrifugal blower 1 will be mainly described with reference to FIG.
  • the configuration of the air conditioner 40D according to the fifth embodiment is the same as the configuration of the air conditioner 40 according to the first embodiment unless otherwise specified.
  • the housing 16D has an inlet wall portion 16b1 in which the housing suction port 18 is formed, and an outlet wall portion 16c2 in which the housing outlet 17 is formed.
  • the entrance wall portion 16b1 constitutes a wall portion on the lower surface of the housing 16D.
  • the entrance wall portion 16b1 is a part of the lower surface portion 16b.
  • the outlet wall portion 16c2 constitutes a wall portion on the side surface of the housing 16D.
  • the second case portion 46 of the scroll casing 4 has a peripheral wall 4c facing the housing suction port 18. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
  • each of the end portions 18d and the end portions 18e of the housing suction port 18 is connected to the rotation shaft RS.
  • the virtual straight line is defined as the first virtual line CL.
  • the end portion 18d is the end portion on the housing outlet 17 side, or the end portion on the front surface side of the housing 16D.
  • the end portion 18e is an end portion on the back side of the housing 16D.
  • the side surface side on which the housing outlet 17 is formed is the front side of the housing 16D
  • the side surface side opposite to the housing outlet 17 is the back side of the housing 16D.
  • the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. do.
  • the fixed portion 20 of the centrifugal blower 1 has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
  • the air conditioner 40D has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
  • the inlet wall portion 16b1 in which the housing suction port 18 is formed constitutes a wall portion on the lower surface of the housing 16D
  • the outlet wall portion 16c2 in which the housing outlet 17 is formed is on the side surface of the housing 16D. Make up the wall. Therefore, the air conditioned device 40D can suck in air from below and discharge the air conditioned air to the side.
  • FIG. 15 is a side view conceptually showing an example of the internal configuration of the air conditioner 40E according to the sixth embodiment.
  • the parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 14 are designated by the same reference numerals, and the description thereof will be omitted.
  • the formation position of the housing suction port 18 in the housing 16E is different from the formation position of the housing suction port 18 of the air conditioner 40 according to the first embodiment. ..
  • the relationship between the housing 16E and the centrifugal blower 1 will be mainly described with reference to FIG.
  • the configuration of the air conditioner 40E according to the sixth embodiment is the same as the configuration of the air conditioner 40 according to the first embodiment unless otherwise specified.
  • the housing 16E has an inlet wall portion 16b1 in which the housing suction port 18 is formed, and an outlet wall portion 16c2 in which the housing outlet 17 is formed.
  • the entrance wall portion 16b1 constitutes a wall portion on the lower surface of the housing 16E.
  • the entrance wall portion 16b1 is a part of the lower surface portion 16b.
  • the outlet wall portion 16c2 constitutes a wall portion on the side surface of the housing 16E.
  • the housing 16E has an inlet wall portion 16c1 in which the housing suction port 18 is formed as one of the side surface portions 16c.
  • the inlet wall portion 16c1 and the outlet wall portion 16c2 form side wall surfaces located on opposite sides to each other via the heat exchanger 10 and the centrifugal blower 1.
  • the housing 16E is formed with two air suction ports, a housing suction port 18 formed on the inlet wall portion 16b1 and a housing suction port 18 formed on the inlet wall portion 16c1.
  • the second case portion 46 of the scroll casing 4 is formed by the housing suction port 18 formed in the inlet wall portion 16b1 and the housing suction port 18 formed in the inlet wall portion 16c1. It has a peripheral wall 4c facing the suction port. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
  • the shortest virtual straight line connecting the surface forming the housing suction port 18 of the inlet wall portion 16c1 and the rotating shaft RS from the viewpoint seen in the axial direction of the rotating shaft RS of the fan 2. Is defined as the horizontal straight line EL1.
  • the lateral straight line EL1 is a straight line perpendicular to the surface of the inlet wall portion 16c1 forming the housing suction port 18.
  • the shortest virtual straight line connecting the surface forming the housing suction port 18 of the inlet wall portion 16b1 and the rotation axis RS is defined as the vertical straight line EL2. ..
  • the vertical straight line EL2 is a straight line perpendicular to the surface of the inlet wall portion 16b1 forming the housing suction port 18.
  • the area surrounded by is defined as the area SE.
  • the air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE.
  • the region SE is a region close to the two air suction ports of the housing suction port 18 and the inlet wall portion 16c1 formed in the inlet wall portion 16b1, and is a region in which the amount of air sucked is relatively large.
  • the air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE. Since the air conditioner 40E has this configuration, the fixing portion 20 is not provided in a region where the amount of air sucked is relatively large.
  • the air conditioner 40E can suppress the amount of airflow that interferes with the fixed portion 20.
  • the amount of airflow that interferes with the fixing portion 20 is suppressed, so that the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the decrease in the airflow amount of the gas flowing into the scroll casing 4 is suppressed. can do.
  • the air conditioner 40E can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20 by suppressing the amount of the airflow that interferes with the fixed portion 20, and the air conditioner 40E is compared with the air conditioner 40L. The noise emitted from the air conditioner 40E can be reduced.
  • the air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE.
  • the air conditioner 40E has a low velocity of airflow that interferes with the fixed portion 20 formed far from the two air suction ports of the housing suction port 18 formed in the inlet wall portion 16b1 and the inlet wall portion 16c1. Become. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40E suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do.
  • the air conditioner 40E can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40E can be reduced.
  • a double suction type centrifugal blower 1 provided with a double suction type fan 2 in which a plurality of blades 2d are formed on both of the main plates 11 is given as an example.
  • the first to sixth embodiments can also be applied to a single suction type centrifugal blower 1 provided with a single suction type fan 2 in which a plurality of blades 2d are formed only on one side of the main plate 11.
  • each of the above embodiments 1 to 6 can be implemented in combination with each other. Further, the configuration shown in the above embodiment is an example, and can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

This air conditioner comprises: a centrifugal blower including a fan which is rotationally driven, and a scroll casing in which the fan is stored, and which has a peripheral wall formed in a spiral shape and a side wall provided with an air suction port; a driving source for applying a driving force to the fan; a heat exchanger disposed in a position facing an air discharge port formed in the scroll casing; a housing in which the centrifugal blower, the driving source, and the heat exchanger are stored, and which has a partition plate for partitioning the inside thereof into an air blowing chamber where the fan is disposed and a heat exchange chamber where the heat exchanger is disposed, the housing having formed therein a housing suction port through which air flowing into the air blowing chamber passes, and a housing blowout port through which air flowing out from the heat exchange chamber passes, wherein the scroll casing has a first case part having a discharge part that forms the discharge port and is fixed to the partition plate, a second case part having a peripheral wall facing the housing suction port and detachably fixed to the first case part, and a fixing part which is provided on the side wall and fixes the first case part and the second case part, and a dividing part, which is a joining portion between the first case part and the second case part, is formed on the side wall and the peripheral wall and formed on portions other than the discharge part and, in a viewpoint seen in the axial direction of the axis of rotation of the fan, the fixing part is provided to portions other than a region surrounded by the housing suction port and a first virtual line, which is a virtual straight line connecting both ends of the housing suction port and the axis of rotation.

Description

空気調和装置Air conditioner
　本開示は、遠心送風機を有する空気調和装置に関するものである。 The present disclosure relates to an air conditioner having a centrifugal blower.
　従来の空気調和装置には、空気の吸入口と空気の吹出口との間に、熱交換器及びスクロールケーシングを有する遠心送風機を有するものがある。空気調和装置は、スクロールケーシング内に収められたファンが回転することによって、空気調和装置の吸入口から吸引された空気がスクロールケーシングの吸込口に構成されたベルマウスに沿ってファンに流入する。そして、ファンから吐出された気流は、スクロールケーシング内で昇圧された後、スクロールケーシングから吐出され、熱交換器を通過した後、空気調和装置の吹出口から空調対象空間に吐出される。 Some conventional air conditioners have a centrifugal blower having a heat exchanger and a scroll casing between the air inlet and the air outlet. In the air conditioner, the fan housed in the scroll casing rotates, and the air sucked from the suction port of the air conditioner flows into the fan along the bell mouth formed in the suction port of the scroll casing. Then, the airflow discharged from the fan is boosted in the scroll casing, then discharged from the scroll casing, passed through the heat exchanger, and then discharged from the air outlet of the air conditioner to the air-conditioned space.
　空気調和装置に用いられるスクロールケーシングは、ファンを内包するため、２部品に分割される場合がある。２部品に分割されるスクロールケーシングは、作成の容易さが考慮されてスクロールケーシングの吐出口を構成する部材に２部品が接合する分割部を有し、また、スクロールケーシングの吸込口を挟んで反対側に更なる分割部を有している（例えば、特許文献１参照）。特許文献１の空気調和装置はまた、この分割された２部品を互いに固定するために各分割部近傍のスクロールケーシングの壁面に固定部が設けられている。 The scroll casing used in the air conditioner contains a fan, so it may be divided into two parts. The scroll casing divided into two parts has a divided portion in which the two parts are joined to a member constituting the discharge port of the scroll casing in consideration of ease of production, and the scroll casing is opposite with the suction port of the scroll casing in between. It has a further divided portion on the side (see, for example, Patent Document 1). The air conditioner of Patent Document 1 is also provided with a fixing portion on the wall surface of the scroll casing in the vicinity of each divided portion in order to fix the two divided parts to each other.
特開２００５－６９１７７号公報Japanese Unexamined Patent Publication No. 2005-69177
　しかしながら、スクロールケーシングの吸込口に流入する気流の速度は、空気調和装置の吸入口側で大きくなる。そのため、特許文献１の空気調和装置は、空気調和装置の吸入口側に設けられた固定部と気流とが干渉することによって、ベルマウスを流れる気流の剥離が生じ、スクロールケーシング内に流入する気体の風量が低減する場合がある。 However, the velocity of the airflow flowing into the suction port of the scroll casing increases on the suction port side of the air conditioner. Therefore, in the air conditioner of Patent Document 1, the airflow that flows through the bell mouth is separated due to the interference between the fixed portion provided on the suction port side of the air conditioner and the airflow, and the gas that flows into the scroll casing. Air volume may be reduced.
　本開示は、上記のような課題を解決するためのものであり、遠心送風機のスクロールケーシング内に流入する気体の風量の低減を抑制する空気調和装置を得ることを目的とする。 The present disclosure is for solving the above-mentioned problems, and an object of the present disclosure is to obtain an air conditioner that suppresses a reduction in the amount of gas flowing into the scroll casing of a centrifugal blower.
　本開示に係る空気調和装置は、回転駆動されるファンと、ファンが収納され、渦巻形状に形成された周壁及び空気の吸込口が設けられた側壁を有するスクロールケーシングと、を備えた遠心送風機と、ファンに駆動力を付与する駆動源と、スクロールケーシングに形成された空気の吐出口と対向する位置に配置された熱交換器と、遠心送風機、駆動源及び熱交換器が収納され、ファンが配置される送風室と熱交換器が配置される熱交換室とに内部を隔てる仕切板を有する筐体であって、送風室に流入する空気が通過する筐体吸入口と、熱交換室から流出する空気が通過する筐体吹出口と、が形成された筐体と、を備え、スクロールケーシングは、吐出口を形成する吐出部を有し、吐出部が仕切板に固定される第１ケース部と、筐体吸入口と対向する周壁を有し、第１ケース部に着脱自在に固定される第２ケース部と、側壁に設けられ、第１ケース部と第２ケース部とを固定する固定部と、を有し、第１ケース部と第２ケース部との接合部分である分割部は、側壁と周壁とに形成されていると共に、吐出部以外の部分に形成されており、固定部は、ファンの回転軸の軸方向に見た視点において、筐体吸入口の両端部のそれぞれと回転軸とを結ぶ仮想の直線である第１仮想線と、筐体吸入口とによって囲まれた領域以外の部分に設けられているものである。 The air conditioner according to the present disclosure includes a centrifugal blower including a rotary-driven fan and a scroll casing in which the fan is housed and has a peripheral wall formed in a spiral shape and a side wall provided with an air suction port. , A drive source that applies driving force to the fan, a heat exchanger arranged at a position facing the air discharge port formed in the scroll casing, a centrifugal blower, a drive source, and a heat exchanger are housed in the fan. A housing having a partition plate that separates the inside from the air blower chamber to be arranged and the heat exchange chamber in which the heat exchanger is arranged. A first case comprising a housing outlet through which the outflowing air passes, and a housing in which the scroll casing has a discharge portion forming a discharge port, and the discharge portion is fixed to a partition plate. A second case portion having a portion, a peripheral wall facing the housing suction port and detachably fixed to the first case portion, and a second case portion provided on the side wall to fix the first case portion and the second case portion. The divided portion, which has a fixed portion and is a joint portion between the first case portion and the second case portion, is formed on the side wall and the peripheral wall, and is formed on a portion other than the discharge portion to be fixed. The portion is surrounded by the first virtual line, which is a virtual straight line connecting each of both ends of the housing suction port and the rotation shaft, and the housing suction port from the viewpoint seen in the axial direction of the fan rotation axis. It is provided in a part other than the area.
　本開示によれば、遠心送風機は、第１ケース部と第２ケース部とを互いに固定する固定部を有する。この固定部は、側壁に設けられていると共に、ファンの回転軸の軸方向に見た視点において、筐体吸入口の両端部のそれぞれと回転軸とを結ぶ仮想の直線である第１仮想線と、筐体吸入口とによって囲まれた領域以外の部分に設けられている。空気調和装置は、固定部の位置が空気調和装置の筐体吸入口から遠ざけられているため、筐体吸入口から流入する速度の速い気流と固定部との干渉を抑制することができる。そのため、空気調和装置は、ベルマウスを流れる気流の剥離が抑制され、スクロールケーシング内に流入する気体の風量の低下を抑制することができる。 According to the present disclosure, the centrifugal blower has a fixing portion for fixing the first case portion and the second case portion to each other. This fixed portion is provided on the side wall, and is a first virtual line that is a virtual straight line connecting each of both ends of the housing suction port and the rotating shaft from the viewpoint seen in the axial direction of the rotating shaft of the fan. It is provided in a portion other than the area surrounded by the housing suction port. In the air conditioner, since the position of the fixed portion is kept away from the housing suction port of the air conditioner, it is possible to suppress the interference between the fast airflow flowing in from the housing suction port and the fixed portion. Therefore, the air conditioner can suppress the separation of the airflow flowing through the bell mouth and suppress the decrease in the air volume of the gas flowing into the scroll casing.
実施の形態１に係る遠心送風機の斜視図である。It is a perspective view of the centrifugal blower which concerns on Embodiment 1. FIG. 実施の形態１に係る遠心送風機を回転軸の軸方向に見た内部の概念図である。FIG. 5 is a conceptual diagram of the inside of the centrifugal blower according to the first embodiment as viewed in the axial direction of the rotating shaft. 実施の形態１に係る遠心送風機を回転軸の軸方向に見た外部の概念図である。FIG. 5 is an external conceptual diagram of the centrifugal blower according to the first embodiment as viewed in the axial direction of the rotating shaft. 実施の形態１に係る空気調和装置の一例を概念的に示した斜視図である。It is a perspective view which conceptually showed an example of the air-conditioning apparatus which concerns on Embodiment 1. FIG. 実施の形態１に係る空気調和装置の内部構成の一例を示す概念図である。It is a conceptual diagram which shows an example of the internal structure of the air conditioner which concerns on Embodiment 1. FIG. 実施の形態１に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 1. FIG. 実施の形態１に係る空気調和装置の変形例の内部構成を概念的に示す側面図である。It is a side view which conceptually shows the internal structure of the modification of the air conditioner which concerns on Embodiment 1. FIG. 比較例に係る遠心送風機を回転軸の軸方向に見た概念図である。It is a conceptual diagram which looked at the centrifugal blower which concerns on a comparative example in the axial direction of the rotation axis. 比較例に係る遠心送風機の分割された概念図である。It is a divided conceptual diagram of the centrifugal blower which concerns on a comparative example. 比較例に係る空気調和装置の内部構成の一例を示す概念図である。It is a conceptual diagram which shows an example of the internal structure of the air conditioner which concerns on a comparative example. 実施の形態２に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 2. FIG. 実施の形態３に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 3. FIG. 実施の形態４に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 4. FIG. 実施の形態５に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 5. 実施の形態６に係る空気調和装置の内部構成の一例を概念的に示す側面図である。It is a side view which conceptually shows an example of the internal structure of the air conditioner which concerns on Embodiment 6.
　以下、本開示の実施の形態に係る空気調和装置４０について図面等を参照しながら説明する。なお、図１を含む以下の図面では、各構成部材の相対的な寸法の関係及び形状等が実際のものとは異なる場合がある。また、以下の図面において、同一の符号を付したものは、同一又はこれに相当するものであり、このことは明細書の全文において共通することとする。また、理解を容易にするために方向を表す用語（例えば「上」、「下」、「右」、「左」、「前」、「後」など）を適宜用いるが、それらの表記は、説明の便宜上、そのように記載しているだけであって、装置あるいは部品の配置及び向きを限定するものではない。 Hereinafter, the air conditioner 40 according to the embodiment of the present disclosure will be described with reference to drawings and the like. In the following drawings including FIG. 1, the relative dimensional relationships and shapes of the constituent members may differ from the actual ones. Further, in the following drawings, those having the same reference numerals are the same or equivalent thereof, and this shall be common to the entire text of the specification. In addition, terms that indicate directions (for example, "top", "bottom", "right", "left", "front", "rear", etc.) are used as appropriate for ease of understanding. For convenience of explanation, it is described as such, and does not limit the arrangement and orientation of the device or component.
実施の形態１．
［遠心送風機１］
　図１は、実施の形態１に係る遠心送風機１の斜視図である。図２は、実施の形態１に係る遠心送風機１を回転軸ＲＳの軸方向に見た内部の概念図である。図３は、実施の形態１に係る遠心送風機１を回転軸ＲＳの軸方向に見た外部の概念図である。なお、図２は、遠心送風機１の内部構造を説明するためにベルマウス３の図示を省略している。 Embodiment 1.
[Centrifugal blower 1]
FIG. 1 is a perspective view of the centrifugal blower 1 according to the first embodiment. FIG. 2 is a conceptual diagram of the inside of the centrifugal blower 1 according to the first embodiment as viewed in the axial direction of the rotating shaft RS. FIG. 3 is an external conceptual diagram of the centrifugal blower 1 according to the first embodiment as viewed in the axial direction of the rotating shaft RS. Note that FIG. 2 omits the illustration of the bell mouth 3 in order to explain the internal structure of the centrifugal blower 1.
　遠心送風機１は、ファン２の回転軸ＲＳの軸方向において、両側から空気が吸い込まれる両吸込型の遠心送風機１である。遠心送風機１の構成は、主板２ａの一方の面側と他方の面側とが同様の構成となるため、図１を用いて遠心送風機１の構成を説明し、図１とは反対側の遠心送風機１の構成の図示は省略する。 The centrifugal blower 1 is a double suction type centrifugal blower 1 in which air is sucked from both sides in the axial direction of the rotating shaft RS of the fan 2. Since the configuration of the centrifugal blower 1 has the same configuration on one surface side and the other surface side of the main plate 2a, the configuration of the centrifugal blower 1 will be described with reference to FIG. The illustration of the configuration of the blower 1 is omitted.
　まず、図１～図３を用いて、遠心送風機１の基本的な構造について説明する。遠心送風機１は、例えば、シロッコファン、あるいは、ターボファン等の多翼遠心型の遠心送風機１である。遠心送風機１は、気流を発生させるファン２と、ファン２が収納されるスクロールケーシング４とを有する。 First, the basic structure of the centrifugal blower 1 will be described with reference to FIGS. 1 to 3. The centrifugal blower 1 is, for example, a multi-blade centrifugal type centrifugal blower 1 such as a sirocco fan or a turbo fan. The centrifugal blower 1 has a fan 2 for generating an air flow and a scroll casing 4 in which the fan 2 is housed.
（ファン２）
　ファン２は、モータ等（図示は省略）によって回転駆動され、回転で生じる遠心力により、径方向外方へ空気を強制的に送出するものである。ファン２は、図１及び図２に示すように、円盤状の主板２ａと、主板２ａの周縁部２ａ１に設置される複数枚の羽根２ｄと、を有する。なお、主板２ａは板状であればよく、例えば多角形状等、円盤状以外の形状であってもよい。主板２ａの中心部には、モータ（図示は省略）が接続される軸部２ｂが設けられている。主板２ａは、軸部２ｂを介してモータによって回転駆動される。 (Fan 2)
The fan 2 is rotationally driven by a motor or the like (not shown), and forcibly sends air outward in the radial direction by a centrifugal force generated by the rotation. As shown in FIGS. 1 and 2, the fan 2 has a disk-shaped main plate 2a and a plurality of blades 2d installed on the peripheral edge portion 2a1 of the main plate 2a. The main plate 2a may have a plate shape, and may have a shape other than a disk shape, such as a polygonal shape. At the center of the main plate 2a, a shaft portion 2b to which a motor (not shown) is connected is provided. The main plate 2a is rotationally driven by a motor via the shaft portion 2b.
　複数の羽根２ｄは、軸部２ｂを中心とした円周上に配置され、基端が主板２ａに固定されている。複数の羽根２ｄは、ファン２の回転軸ＲＳの軸方向において、主板２ａの両側に設けられている。各羽根２ｄは、主板２ａの周縁部２ａ１において、互いに一定の間隔をあけて配置されている。各羽根２ｄは、例えば湾曲した長方形の板状に形成されており、径方向に沿うように、又は径方向に対して所定の角度に傾斜して設置される。 The plurality of blades 2d are arranged on the circumference centered on the shaft portion 2b, and the base end is fixed to the main plate 2a. The plurality of blades 2d are provided on both sides of the main plate 2a in the axial direction of the rotation shaft RS of the fan 2. The blades 2d are arranged at a certain distance from each other on the peripheral edge portion 2a1 of the main plate 2a. Each blade 2d is formed, for example, in the shape of a curved rectangular plate, and is installed along the radial direction or inclined at a predetermined angle with respect to the radial direction.
　各羽根２ｄは、同じ断面形状が回転軸ＲＳの軸方向に連続する２次元翼であるように形成されているが、ねじれた形状を有する３次元翼であってもよい。また、各羽根２ｄは主板２ａに対してほぼ垂直に立ち上がるように設けられているが、当該構成に限定されものではなく、各羽根２ｄは、主板２ａの垂直方向に対して傾斜して設けられてもよい。 Each blade 2d is formed so that the same cross-sectional shape is a two-dimensional blade continuous in the axial direction of the rotation axis RS, but it may be a three-dimensional blade having a twisted shape. Further, although each blade 2d is provided so as to stand up substantially perpendicular to the main plate 2a, the present invention is not limited to this, and each blade 2d is provided so as to be inclined with respect to the vertical direction of the main plate 2a. You may.
　ファン２は、回転軸ＲＳの軸方向において、複数の羽根２ｄの端部に環状の側板（図示は省略）を有している。側板が取り付けられた羽根２ｄの端部は、羽根２ｄにおいて、主板２ａと接続されている側とは反対側の端部である。側板は、複数の羽根２ｄを連結することで、各羽根２ｄの先端の位置関係を維持し、かつ、複数の羽根２ｄを補強している。 The fan 2 has an annular side plate (not shown) at the ends of the plurality of blades 2d in the axial direction of the rotating shaft RS. The end of the blade 2d to which the side plate is attached is the end of the blade 2d on the side opposite to the side connected to the main plate 2a. The side plate maintains the positional relationship of the tips of the respective blades 2d by connecting the plurality of blades 2d, and reinforces the plurality of blades 2d.
　ファン２は、図１に示すように、主板２ａに配置された複数の羽根２ｄにより、筒形状に構成されている。そして、ファン２は、回転軸ＲＳの軸方向において、主板２ａと反対側の羽根２ｄの端部に、主板２ａと複数の羽根２ｄとで囲まれた空間に気体を流入させるための吸込口２ｅが形成されている。ファン２は、主板２ａを構成する板面の両側にそれぞれ羽根２ｄが配置されており、主板２ａを構成する板面の両側に吸込口２ｅが形成されている。 As shown in FIG. 1, the fan 2 is formed in a tubular shape by a plurality of blades 2d arranged on the main plate 2a. Then, the fan 2 has a suction port 2e for allowing gas to flow into the space surrounded by the main plate 2a and the plurality of blades 2d at the end of the blade 2d opposite to the main plate 2a in the axial direction of the rotation shaft RS. Is formed. In the fan 2, blades 2d are arranged on both sides of the plate surface forming the main plate 2a, and suction ports 2e are formed on both sides of the plate surface forming the main plate 2a.
　ファン２は、モータ（図示は省略）が駆動することにより、回転軸ＲＳを中心に回転駆動される。ファン２が回転することで、遠心送風機１の外部の気体が、ベルマウス３に沿って流れ、スクロールケーシング４に形成された吸込口５とファン２の吸込口２ｅとを通り、主板２ａと複数の羽根２ｄとで囲まれる空間に吸い込まれる。そして、ファン２が回転することで、主板２ａと複数の羽根２ｄとで囲まれる空間に吸い込まれた空気が、羽根２ｄと隣接する羽根２ｄとの間を通り、径方向外方に送り出される。 The fan 2 is rotationally driven around the rotation axis RS by being driven by a motor (not shown). When the fan 2 rotates, the gas outside the centrifugal blower 1 flows along the bell mouth 3, passes through the suction port 5 formed in the scroll casing 4 and the suction port 2e of the fan 2, and is connected to the main plate 2a. It is sucked into the space surrounded by the blade 2d. Then, as the fan 2 rotates, the air sucked into the space surrounded by the main plate 2a and the plurality of blades 2d passes between the blades 2d and the adjacent blades 2d and is sent out in the radial direction.
（スクロールケーシング４）
　スクロールケーシング４は、図１に示すように、内部にファン２を収納する。スクロールケーシング４は、ファン２から吹き出された空気を整流する。スクロールケーシング４は、樹脂製であるが、スクロールケーシング４は、樹脂製に限定されるものではない。スクロールケーシング４は、スクロール部４１と、吐出部４２と、を有する。 (Scroll casing 4)
As shown in FIG. 1, the scroll casing 4 houses the fan 2 inside. The scroll casing 4 rectifies the air blown from the fan 2. The scroll casing 4 is made of resin, but the scroll casing 4 is not limited to that of resin. The scroll casing 4 has a scroll portion 41 and a discharge portion 42.
（スクロール部４１）
　スクロール部４１は、ファン２が発生させた気流の動圧を静圧に変換する風路を形成する。スクロール部４１は、ファン２を構成する軸部２ｂの回転軸ＲＳの軸方向からファン２を覆う側壁４ａであって、空気を取り込む吸込口５が形成された側壁４ａと、回転軸ＲＳの径方向からファン２を囲む周壁４ｃと、を有する。 (Scroll unit 41)
The scroll unit 41 forms an air passage that converts the dynamic pressure of the air flow generated by the fan 2 into a static pressure. The scroll portion 41 is a side wall 4a that covers the fan 2 from the axial direction of the rotating shaft RS of the shaft portion 2b constituting the fan 2, and has a side wall 4a formed with a suction port 5 for taking in air and a diameter of the rotating shaft RS. It has a peripheral wall 4c that surrounds the fan 2 from the direction.
　また、スクロール部４１は、吐出部４２と周壁４ｃの巻始部４１ａとの間に位置して曲面を構成し、吸込口５から流入した空気を遠心方向に吹き出し昇圧させるために必要な絞り部である舌部４３を有する。なお、回転軸ＲＳの径方向とは、回転軸ＲＳに垂直な方向である。周壁４ｃ及び側壁４ａにより構成されるスクロール部４１の内部空間は、ファン２から吹き出された空気が周壁４ｃに沿って流れる空間となっている。 Further, the scroll portion 41 is located between the discharge portion 42 and the winding start portion 41a of the peripheral wall 4c to form a curved surface, and is a throttle portion necessary for blowing out the air flowing in from the suction port 5 in the centrifugal direction and boosting the pressure. It has a tongue portion 43 which is. The radial direction of the rotation axis RS is a direction perpendicular to the rotation axis RS. The internal space of the scroll portion 41 composed of the peripheral wall 4c and the side wall 4a is a space in which the air blown from the fan 2 flows along the peripheral wall 4c.
（側壁４ａ）
　側壁４ａは、ファン２の回転軸ＲＳの軸方向において、ファン２の両側に配置されている。図１及び図３に示すように、スクロールケーシング４の側壁４ａには、ファン２とスクロールケーシング４の外部との間を空気が流通できるように、空気を取り込むための吸込口５が形成されている。 (Wall 4a)
The side walls 4a are arranged on both sides of the fan 2 in the axial direction of the rotation axis RS of the fan 2. As shown in FIGS. 1 and 3, a suction port 5 for taking in air is formed on the side wall 4a of the scroll casing 4 so that air can flow between the fan 2 and the outside of the scroll casing 4. There is.
　吸込口５は、円形状に形成され、ファン２は、吸込口５の中心とファン２の軸部２ｂの中心とがほぼ一致するように配置される。なお、吸込口５の形状は、円形状に限定されるものではなく、例えば楕円形状等、他の形状であってもよい。 The suction port 5 is formed in a circular shape, and the fan 2 is arranged so that the center of the suction port 5 and the center of the shaft portion 2b of the fan 2 substantially coincide with each other. The shape of the suction port 5 is not limited to a circular shape, and may be another shape such as an elliptical shape.
　遠心送風機１のスクロールケーシング４は、ファン２の回転軸ＲＳの軸方向において、主板２ａの両側に、吸込口５が形成された側壁４ａを有する両吸込タイプのケーシングである。遠心送風機１は、スクロールケーシング４が２つの側壁４ａを有し、２つの側壁４ａはそれぞれ対向するように配置されている。 The scroll casing 4 of the centrifugal blower 1 is a double suction type casing having side walls 4a having suction ports 5 formed on both sides of the main plate 2a in the axial direction of the rotation shaft RS of the fan 2. In the centrifugal blower 1, the scroll casing 4 has two side walls 4a, and the two side walls 4a are arranged so as to face each other.
　スクロールケーシング４は、図１に示すように、側壁４ａとして、第１側壁４ａ１と、第２側壁４ａ２とを有する。第１側壁４ａ１は、回転軸ＲＳの軸方向における周壁４ｃの一方の端部である第１端部４ｃ１１に沿って形成され、第２側壁４ａ２は、回転軸ＲＳの軸方向における周壁４ｃの他方の端部である第２端部４ｃ１２に沿って形成されている。第１側壁４ａ１には、主板２ａの一方の板面に対向する吸込口５が形成されている。第２側壁４ａ２には、主板２ａの他方の板面に対向する吸込口５が形成されている。 As shown in FIG. 1, the scroll casing 4 has a first side wall 4a1 and a second side wall 4a2 as the side wall 4a. The first side wall 4a1 is formed along the first end portion 4c11 which is one end of the peripheral wall 4c in the axial direction of the rotating shaft RS, and the second side wall 4a2 is the other of the peripheral wall 4c in the axial direction of the rotating shaft RS. It is formed along the second end portion 4c12 which is the end portion of the above. A suction port 5 facing one plate surface of the main plate 2a is formed on the first side wall 4a1. The second side wall 4a2 is formed with a suction port 5 facing the other plate surface of the main plate 2a.
　側壁４ａに設けられた空気の吸込口５は、図１及び図３に示すように、ベルマウス３によって形成されている。ベルマウス３は、ファン２に吸入される気体を整流してファン２の吸込口２ｅに流入させる。ベルマウス３は、スクロールケーシング４の外部から内部に向けて開口径が次第に小さくなるように形成されている。当該構成を有する側壁４ａによって、吸込口５近傍の空気は、ベルマウス３に沿って滑らかに流動し、また、吸込口５からファン２に効率よく流入する。 The air suction port 5 provided on the side wall 4a is formed by the bell mouth 3 as shown in FIGS. 1 and 3. The bell mouth 3 rectifies the gas sucked into the fan 2 and causes the gas to flow into the suction port 2e of the fan 2. The bell mouth 3 is formed so that the opening diameter gradually decreases from the outside to the inside of the scroll casing 4. Due to the side wall 4a having this configuration, the air in the vicinity of the suction port 5 flows smoothly along the bell mouth 3 and efficiently flows into the fan 2 from the suction port 5.
（周壁４ｃ）
　周壁４ｃは、互いに対向する側壁４ａの間に設けられた壁であり、ファン２の回転方向Ｒにおいて湾曲面を構成する。周壁４ｃは、ファン２が発生させた気流を、湾曲する壁面に沿わせ、スクロール部４１を介して吐出口４２ａに導く。周壁４ｃは、例えば、ファン２の回転軸ＲＳの軸方向と平行に配置されてファン２を覆う。なお、周壁４ｃは、ファン２の回転軸ＲＳの軸方向に対して傾斜した形態であってもよく、回転軸ＲＳの軸方向と平行に配置される形態に限定されるものではない。周壁４ｃは、回転軸ＲＳに対して径方向からファン２を覆い、複数の羽根２ｄと対向する内周面を構成する。周壁４ｃは、ファン２の羽根２ｄの空気の吹き出し側と対向する。 (Peripheral wall 4c)
The peripheral wall 4c is a wall provided between the side walls 4a facing each other, and forms a curved surface in the rotation direction R of the fan 2. The peripheral wall 4c guides the airflow generated by the fan 2 along the curved wall surface to the discharge port 42a via the scroll portion 41. The peripheral wall 4c is arranged parallel to the axial direction of the rotation axis RS of the fan 2, for example, and covers the fan 2. The peripheral wall 4c may be inclined with respect to the axial direction of the rotating shaft RS of the fan 2, and is not limited to the form arranged parallel to the axial direction of the rotating shaft RS. The peripheral wall 4c covers the fan 2 in the radial direction with respect to the rotating shaft RS, and constitutes an inner peripheral surface facing the plurality of blades 2d. The peripheral wall 4c faces the air blowing side of the blade 2d of the fan 2.
　周壁４ｃは、図２及び図３に示すように、舌部４３との境界に位置する巻始部４１ａからファン２の回転方向Ｒに沿って舌部４３から離れた側の吐出部４２とスクロール部４１との境界に位置する巻終部４１ｂまで設けられている。巻始部４１ａは、湾曲面を構成する周壁４ｃにおいて、ファン２の回転により発生する気流の上流側の端部であり、巻終部４１ｂは、ファン２の回転により発生する気流の下流側の端部である。 As shown in FIGS. 2 and 3, the peripheral wall 4c scrolls with the discharge portion 42 on the side away from the tongue portion 43 along the rotation direction R of the fan 2 from the winding start portion 41a located at the boundary with the tongue portion 43. It is provided up to the winding end 41b located at the boundary with the portion 41. The winding start portion 41a is an upstream end portion of the airflow generated by the rotation of the fan 2 on the peripheral wall 4c constituting the curved surface, and the winding end portion 41b is a downstream end portion of the airflow generated by the rotation of the fan 2. It is the end.
　周壁４ｃは、回転方向Ｒに渦巻形状に形成されている。渦巻形状としては、例えば、対数螺旋、アルキメデス螺旋、あるいは、インボリュート曲線等に基づく渦巻形状がある。周壁４ｃの内周面は、渦巻形状の巻始めとなる巻始部４１ａから渦巻形状の巻終りとなる巻終部４１ｂまでファン２の周方向に沿って滑らかに湾曲する曲面を構成する。このような構成により、ファン２から送り出された空気は、吐出部４２の方向へファン２と周壁４ｃとの間の内部空間を滑らかに流動する。このため、スクロールケーシング４内では、舌部４３から吐出部４２へ向かって空気の静圧が効率よく上昇する。 The peripheral wall 4c is formed in a spiral shape in the rotation direction R. Examples of the spiral shape include a logarithmic spiral, an Archimedes spiral, a spiral shape based on an involute curve, and the like. The inner peripheral surface of the peripheral wall 4c constitutes a curved surface that smoothly curves along the circumferential direction of the fan 2 from the winding start portion 41a, which is the start of spiral winding, to the winding end portion 41b, which is the end of spiral winding. With such a configuration, the air sent out from the fan 2 smoothly flows in the internal space between the fan 2 and the peripheral wall 4c in the direction of the discharge portion 42. Therefore, in the scroll casing 4, the static pressure of air efficiently increases from the tongue portion 43 toward the discharge portion 42.
（吐出部４２）
　吐出部４２は、ファン２が発生させてスクロール部４１を通過した気流が吐き出される吐出口４２ａを形成する。吐出部４２は、周壁４ｃに沿って流動する空気の流れ方向に直交する断面が、矩形状となる中空の管で構成される。なお、吐出部４２の断面形状は、矩形に限定されるものではない。吐出部４２は、ファン２から送り出されて周壁４ｃとファン２との間隙を流動する空気を、スクロールケーシング４の外部へ排出するように案内する流路を形成する。 (Discharge section 42)
The discharge unit 42 forms a discharge port 42a that is generated by the fan 2 and discharges the airflow that has passed through the scroll unit 41. The discharge portion 42 is composed of a hollow pipe having a rectangular cross section orthogonal to the flow direction of the air flowing along the peripheral wall 4c. The cross-sectional shape of the discharge portion 42 is not limited to a rectangle. The discharge unit 42 forms a flow path that guides the air that is sent out from the fan 2 and flows in the gap between the peripheral wall 4c and the fan 2 so as to be discharged to the outside of the scroll casing 4.
　吐出部４２は、図１に示すように、延設板４２ｂと、ディフューザ板４２ｃと、第１側壁４ａ１と、第２側壁４ａ２とを有する。延設板４２ｂは、周壁４ｃの巻終部４１ｂから延びるように形成されており、周壁４ｃと一体に形成されている板状の部分である。ディフューザ板４２ｃは、スクロールケーシング４の舌部４３と一体に形成されており、延設板４２ｂと対向して配置されている板状の部分である。ディフューザ板４２ｃは、吐出部４２内の空気の流れ方向に沿って流路の断面積が次第に拡大するように、延設板４２ｂとの間で所定の角度を有して形成されている。 As shown in FIG. 1, the discharge portion 42 has an extension plate 42b, a diffuser plate 42c, a first side wall 4a1, and a second side wall 4a2. The extension plate 42b is formed so as to extend from the winding end 41b of the peripheral wall 4c, and is a plate-shaped portion integrally formed with the peripheral wall 4c. The diffuser plate 42c is a plate-shaped portion that is integrally formed with the tongue portion 43 of the scroll casing 4 and is arranged so as to face the extension plate 42b. The diffuser plate 42c is formed at a predetermined angle with the extending plate 42b so that the cross-sectional area of the flow path gradually expands along the air flow direction in the discharge portion 42.
　延設板４２ｂとディフューザ板４２ｃとは、第１側壁４ａ１と第２側壁４ａ２との間に形成されている。このように、吐出部４２は、延設板４２ｂ、ディフューザ板４２ｃ、第１側壁４ａ１及び第２側壁４ａ２により、断面矩形状の流路として形成されている。 The extension plate 42b and the diffuser plate 42c are formed between the first side wall 4a1 and the second side wall 4a2. As described above, the discharge portion 42 is formed as a flow path having a rectangular cross section by the extending plate 42b, the diffuser plate 42c, the first side wall 4a1 and the second side wall 4a2.
（舌部４３）
　スクロールケーシング４において、吐出部４２のディフューザ板４２ｃと、周壁４ｃの巻始部４１ａとの間に舌部４３が形成されている。舌部４３は、所定の曲率半径で形成されており、周壁４ｃは、舌部４３を介してディフューザ板４２ｃと滑らかに接続されている。 (Tongue 43)
In the scroll casing 4, the tongue portion 43 is formed between the diffuser plate 42c of the discharge portion 42 and the winding start portion 41a of the peripheral wall 4c. The tongue portion 43 is formed with a predetermined radius of curvature, and the peripheral wall 4c is smoothly connected to the diffuser plate 42c via the tongue portion 43.
　舌部４３は、スクロールケーシング４に形成された渦巻状流路の巻き終わりから巻き始めへの空気の流入を抑制する。舌部４３は、通風路の上流部に設けられ、ファン２の回転方向Ｒに向かう空気の流れと、通風路の下流部から吐出口４２ａに向かう吐出方向の空気の流れと、を分流させる役割を有する。また、吐出部４２に流入する空気流れは、スクロールケーシング４を通過する間に静圧が上昇し、スクロールケーシング４内よりも高圧となる。そのため、舌部４３は、このような圧力差を仕切る機能を有する。 The tongue portion 43 suppresses the inflow of air from the winding end to the winding start of the spiral flow path formed in the scroll casing 4. The tongue portion 43 is provided in the upstream portion of the ventilation passage, and has a role of separating the air flow in the rotation direction R of the fan 2 and the air flow in the discharge direction from the downstream portion of the ventilation passage toward the discharge port 42a. Has. Further, the static pressure of the air flow flowing into the discharge portion 42 increases while passing through the scroll casing 4, and the pressure becomes higher than that in the scroll casing 4. Therefore, the tongue portion 43 has a function of partitioning such a pressure difference.
（スクロールケーシング４の詳細な構成）
　図１及び図３に示すように、スクロールケーシング４は、第１ケース部４５と、第２ケース部４６と、固定部２０とを有する。スクロールケーシング４は、第１ケース部４５と、第２ケース部４６とに分割できる。すなわち、スクロールケーシング４は、第１ケース部４５と、第２ケース部４６とが組み合わされて構成されている。 (Detailed configuration of scroll casing 4)
As shown in FIGS. 1 and 3, the scroll casing 4 has a first case portion 45, a second case portion 46, and a fixing portion 20. The scroll casing 4 can be divided into a first case portion 45 and a second case portion 46. That is, the scroll casing 4 is configured by combining the first case portion 45 and the second case portion 46.
　第１ケース部４５は、スクロール部４１の一部と、吐出口４２ａを形成する吐出部４２とを有する。第１ケース部４５は、周壁４ｃの一部と、側壁４ａの一部とを有する。また、第１ケース部４５は、ベルマウス３の一部を有する。 The first case portion 45 has a part of the scroll portion 41 and a discharge portion 42 forming the discharge port 42a. The first case portion 45 has a part of the peripheral wall 4c and a part of the side wall 4a. Further, the first case portion 45 has a part of the bell mouth 3.
　第２ケース部４６は、スクロール部４１の一部によって構成されている。第２ケース部４６は、周壁４ｃの一部と、側壁４ａの一部とを有する。また、第２ケース部４６は、ベルマウス３の一部を有する。第２ケース部４６は、第１ケース部４５に着脱自在に固定される。第１ケース部４５から第２ケース部４６を取り外すと、ファン２が露出する。 The second case portion 46 is composed of a part of the scroll portion 41. The second case portion 46 has a part of the peripheral wall 4c and a part of the side wall 4a. Further, the second case portion 46 has a part of the bell mouth 3. The second case portion 46 is detachably fixed to the first case portion 45. When the second case portion 46 is removed from the first case portion 45, the fan 2 is exposed.
　第１ケース部４５と第２ケース部４６とが組み合わされることによって、回転軸ＲＳの軸方向と平行に見た場合に、円環状のベルマウス３が形成される。すなわち、回転軸ＲＳの軸方向と平行に見た場合に、第１ケース部４５と第２ケース部４６とが組み合わされることによって、スクロールケーシング４の吸込口５が形成される。 By combining the first case portion 45 and the second case portion 46, an annular bell mouth 3 is formed when viewed in parallel with the axial direction of the rotation axis RS. That is, when viewed parallel to the axial direction of the rotating shaft RS, the suction port 5 of the scroll casing 4 is formed by combining the first case portion 45 and the second case portion 46.
　スクロールケーシング４は、ファン２を内包しているため、組み立ての都合上、分割部６０を有している。第１ケース部４５と第２ケース部４６との接合部分である分割部６０は、スクロールケーシング４において側壁４ａと周壁４ｃとにおいて形成されている。また、分割部６０は、吐出部４２以外の部分に形成されている。より詳細には、分割部６０は、吐出部４２を流れる空気の流れる方向において、スクロールケーシング４の巻き始めの部分となる巻始部４１ａと、吐出口４２ａとの間の領域ＳＡ以外の部分に形成されている。 Since the scroll casing 4 contains the fan 2, it has a split portion 60 for convenience of assembly. The split portion 60, which is a joint portion between the first case portion 45 and the second case portion 46, is formed at the side wall 4a and the peripheral wall 4c in the scroll casing 4. Further, the split portion 60 is formed in a portion other than the discharge portion 42. More specifically, the dividing portion 60 is provided in a portion other than the region SA between the winding start portion 41a, which is the winding start portion of the scroll casing 4, and the discharge port 42a, in the direction in which the air flowing through the discharge portion 42 flows. It is formed.
　領域ＳＡは、一例として、ファン２の回転軸ＲＳの軸方向と平行な方向に見た場合に、図３に示すように、縁部４２ｄと、境界部４２ｅとの間の領域である。縁部４２ｄは、吐出口４２ａを形成する側壁４ａの端縁部である。境界部４２ｅは、ファン２の回転軸ＲＳの軸方向と平行な方向に見た場合に、巻始部４１ａを含む仮想の直線部分であって、縁部４２ｄと平行な仮想の直線部分である。なお、境界部４２ｅと縁部４２ｄとが平行とは、境界部４２ｅと縁部４２ｄとが完全に平行な関係の構成と、境界部４２ｅと縁部４２ｄとが略平行な関係の構成とを含むものである。 As an example, the region SA is a region between the edge portion 42d and the boundary portion 42e as shown in FIG. 3 when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2. The edge portion 42d is an end edge portion of the side wall 4a forming the discharge port 42a. The boundary portion 42e is a virtual straight line portion including the winding start portion 41a when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2, and is a virtual straight line portion parallel to the edge portion 42d. .. The parallelism between the boundary portion 42e and the edge portion 42d means that the boundary portion 42e and the edge portion 42d are completely parallel to each other and the boundary portion 42e and the edge portion 42d are substantially parallel to each other. It includes.
　分割部６０は、図２の気流ＡＲで示す周壁４ｃの内部を流れる空気の流れる方向において、図２及び図３に示すように、気流の上流側に形成された第１分割部６１と、気流の下流側に形成された第２分割部６２と、を有する。スクロールケーシング４は、第１分割部６１及び第２分割部６２の２つの分割部６０において、第１ケース部４５と第２ケース部４６とが接合している。換言すれば、スクロールケーシング４は、第１分割部６１及び第２分割部６２の２つの分割部６０において、第１ケース部４５と第２ケース部４６との２つの構成部品に分割される。 As shown in FIGS. 2 and 3, the split portion 60 includes a first split portion 61 formed on the upstream side of the air flow and an air flow in the direction in which the air flowing inside the peripheral wall 4c shown by the air flow AR in FIG. 2 flows. It has a second divided portion 62 formed on the downstream side of the above. In the scroll casing 4, the first case portion 45 and the second case portion 46 are joined in the two division portions 60 of the first division portion 61 and the second division portion 62. In other words, the scroll casing 4 is divided into two components, a first case portion 45 and a second case portion 46, in the two division portions 60 of the first division portion 61 and the second division portion 62.
　スクロールケーシング４は、分割部６０に固定部２０が設けられている。固定部２０は、第１ケース部４５と第２ケース部４６とを互いに固定するために用いられる。固定部２０は、スクロールケーシング４の側壁４ａに設けられている。 The scroll casing 4 is provided with a fixed portion 20 in the divided portion 60. The fixing portion 20 is used to fix the first case portion 45 and the second case portion 46 to each other. The fixing portion 20 is provided on the side wall 4a of the scroll casing 4.
　図３に示すように、固定部２０は、第１固定部２０Ａと、第２固定部２０Ｂとを有する。第１固定部２０Ａは、第１分割部６１に設けられており、第２固定部２０Ｂは、第２分割部６２に設けられている。すなわち、第１固定部２０Ａは、図２の気流ＡＲで示す周壁４ｃの内部を流れる空気の流れる方向において、第２固定部２０Ｂに対して気流の上流側に設けられており、第２固定部２０Ｂは、第１固定部２０Ａに対して気流の下流側に設けられている。 As shown in FIG. 3, the fixing portion 20 has a first fixing portion 20A and a second fixing portion 20B. The first fixed portion 20A is provided in the first divided portion 61, and the second fixed portion 20B is provided in the second divided portion 62. That is, the first fixed portion 20A is provided on the upstream side of the air flow with respect to the second fixed portion 20B in the direction in which the air flowing inside the peripheral wall 4c shown by the air flow AR in FIG. 2 flows, and the second fixed portion 20A is provided. 20B is provided on the downstream side of the air flow with respect to the first fixed portion 20A.
　固定部２０は、例えば、第１ケース部４５に設けられた第１係合部２１と、第２ケース部４６に設けられた第２係合部２２とが嵌合して結合することにより形成される。あるいは、固定部２０は、第１ケース部４５に設けられた第１係合部２１と第２ケース部４６に設けられた第２係合部２２とが互いにネジ止めされて形成されてもよい。なお、固定部２０の構成は、これらの構成に限定されるものではない。 The fixing portion 20 is formed, for example, by fitting and joining the first engaging portion 21 provided in the first case portion 45 and the second engaging portion 22 provided in the second case portion 46. Will be done. Alternatively, the fixing portion 20 may be formed by screwing the first engaging portion 21 provided in the first case portion 45 and the second engaging portion 22 provided in the second case portion 46 to each other. .. The configuration of the fixing portion 20 is not limited to these configurations.
［空気調和装置４０］
　図４は、実施の形態１に係る空気調和装置４０の一例を概念的に示した斜視図である。図５は、実施の形態１に係る空気調和装置４０の内部構成の一例を示す概念図である。図６は、実施の形態１に係る空気調和装置４０の内部構成の一例を概念的に示す側面図である。なお、図５では、空気調和装置４０の内部構成を示すために、上面部１６ａ等上部の構成は省略している。図４～図６を用いて遠心送風機１を備えた空気調和装置４０について説明する。 [Air conditioner 40]
FIG. 4 is a perspective view conceptually showing an example of the air conditioner 40 according to the first embodiment. FIG. 5 is a conceptual diagram showing an example of the internal configuration of the air conditioner 40 according to the first embodiment. FIG. 6 is a side view conceptually showing an example of the internal configuration of the air conditioner 40 according to the first embodiment. In addition, in FIG. 5, in order to show the internal structure of the air conditioner 40, the structure of the upper part such as the upper surface part 16a is omitted. The air conditioner 40 provided with the centrifugal blower 1 will be described with reference to FIGS. 4 to 6.
　空気調和装置４０は、空調対象空間の空気調和を行う装置であり、吸入した空気の温度及び湿度を調整して空調対象空間に吐出する装置である。空気調和装置４０は、天井から吊り下げられる天井吊り下げ型の装置であるが、空気調和装置４０は、天井吊り下げ型の装置に限定されるものではない。 The air conditioning device 40 is a device that harmonizes the air in the air-conditioned space, adjusts the temperature and humidity of the sucked air, and discharges the air into the air-conditioned space. The air conditioner 40 is a ceiling-suspended device that is suspended from the ceiling, but the air conditioner 40 is not limited to the ceiling-suspended device.
　空気調和装置４０は、遠心送風機１と、遠心送風機１のファン２に駆動力を付与する駆動源６と、遠心送風機１のスクロールケーシング４に形成された空気の吐出口４２ａと対向する位置に配置された熱交換器１０と、を備える。また、空気調和装置４０は、遠心送風機１、駆動源６及び熱交換器１０を内部に収納し、空調対象空間の天井に設置される筐体１６を備えている。更に、空気調和装置４０は、後述する熱交換室２６に断熱材１３を有してもよい。 The air conditioner 40 is arranged at a position facing the centrifugal blower 1, the drive source 6 that applies a driving force to the fan 2 of the centrifugal blower 1, and the air discharge port 42a formed in the scroll casing 4 of the centrifugal blower 1. The heat exchanger 10 is provided. Further, the air conditioner 40 includes a housing 16 that houses the centrifugal blower 1, the drive source 6, and the heat exchanger 10 inside and is installed on the ceiling of the air-conditioned space. Further, the air conditioner 40 may have the heat insulating material 13 in the heat exchange chamber 26 described later.
（筐体１６）
　筐体１６は、図４に示すように、箱状に形成されており、上面部１６ａ、下面部１６ｂ及び側面部１６ｃを含む直方体状に形成されている。なお、筐体１６の形状は、直方体状に限定されるものではなく、例えば、円柱形状、角柱状、円錐状、複数の角部を有する形状、複数の曲面部を有する形状等、他の形状であってもよい。 (Case 16)
As shown in FIG. 4, the housing 16 is formed in a box shape, and is formed in a rectangular parallelepiped shape including an upper surface portion 16a, a lower surface portion 16b, and a side surface portion 16c. The shape of the housing 16 is not limited to a rectangular parallelepiped shape, and other shapes such as a cylindrical shape, a prismatic shape, a conical shape, a shape having a plurality of corners, and a shape having a plurality of curved surfaces. It may be.
　筐体１６は、側面部１６ｃの１つとして、筐体吸入口１８が形成された入口壁部１６ｃ１を有する。筐体吸入口１８には、空気中の塵埃を取り除くフィルタが配置されてもよい。また、筐体１６は、側面部１６ｃの１つとして、筐体吹出口１７が形成された出口壁部１６ｃ２を有する。 The housing 16 has an inlet wall portion 16c1 in which the housing suction port 18 is formed as one of the side surface portions 16c. A filter for removing dust in the air may be arranged at the housing suction port 18. Further, the housing 16 has an outlet wall portion 16c2 in which the housing outlet 17 is formed as one of the side surface portions 16c.
　筐体１６において、入口壁部１６ｃ１と出口壁部１６ｃ２とは、熱交換器１０及び遠心送風機１を介して互いに反対側に位置する側壁面を構成している。なお、筐体吸入口１８は、遠心送風機１の回転軸ＲＳの軸方向に垂直な位置に形成されていればよく、例えば、下面部１６ｂに筐体吸入口１８が形成されてもよい。 In the housing 16, the inlet wall portion 16c1 and the outlet wall portion 16c2 form side wall surfaces located on opposite sides to each other via the heat exchanger 10 and the centrifugal blower 1. The housing suction port 18 may be formed at a position perpendicular to the axial direction of the rotation axis RS of the centrifugal blower 1, and for example, the housing suction port 18 may be formed on the lower surface portion 16b.
　筐体１６の筐体吸入口１８は、後述する送風室２５に流入する空気が通過する。図６に示す矢印ＩＲは、筐体吸入口１８に吸入される空気を示している。筐体１６の筐体吹出口１７は、後述する熱交換室２６から流出する空気が通過する。図６に示す矢印ＯＲは、筐体吹出口１７から吹き出される空気を示している。 The air flowing into the air blower chamber 25, which will be described later, passes through the housing suction port 18 of the housing 16. The arrow IR shown in FIG. 6 indicates the air sucked into the housing suction port 18. Air flowing out of the heat exchange chamber 26, which will be described later, passes through the housing outlet 17 of the housing 16. The arrow OR shown in FIG. 6 indicates the air blown out from the housing outlet 17.
　筐体吹出口１７及び筐体吸入口１８の形状は、図４及び図５に示すように矩形状に形成されている。なお、筐体吹出口１７及び筐体吸入口１８の形状は、矩形状に限定されるものではなく、例えば、円形状、オーバル形状等でもよく、他の形状であってもよい。 The shapes of the housing outlet 17 and the housing suction port 18 are formed in a rectangular shape as shown in FIGS. 4 and 5. The shapes of the housing outlet 17 and the housing suction port 18 are not limited to a rectangular shape, and may be, for example, a circular shape, an oval shape, or any other shape.
　筐体１６の内部空間は、スクロールケーシング４の吸い込み側の空間である送風室２５と、スクロールケーシング４の吹き出し側の空間である熱交換室２６とが、仕切板１９によって隔てられている。すなわち、仕切板１９は、筐体１６の内部空間をファン２が配置される送風室２５と、熱交換器１０が配置される熱交換室２６とに隔てる。図５に示すように、筐体１６の内部には、駆動源６と、二つの遠心送風機１と、熱交換器１０とが収納されている。 In the internal space of the housing 16, the air blowing chamber 25, which is the space on the suction side of the scroll casing 4, and the heat exchange chamber 26, which is the space on the blowout side of the scroll casing 4, are separated by a partition plate 19. That is, the partition plate 19 divides the internal space of the housing 16 into a blower chamber 25 in which the fan 2 is arranged and a heat exchange chamber 26 in which the heat exchanger 10 is arranged. As shown in FIG. 5, a drive source 6, two centrifugal blowers 1, and a heat exchanger 10 are housed inside the housing 16.
（駆動源６）
　駆動源６は、例えば、モータである。駆動源６は、筐体１６の上面部１６ａに固定されたモータサポート９ａによって支持されている。駆動源６は、出力軸６ａを有する。出力軸６ａは、筐体吸入口１８が形成された入口壁部１６ｃ１及び筐体吹出口１７が形成された出口壁部１６ｃ２に対して平行に延びるように配置されている。 (Drive source 6)
The drive source 6 is, for example, a motor. The drive source 6 is supported by a motor support 9a fixed to the upper surface portion 16a of the housing 16. The drive source 6 has an output shaft 6a. The output shaft 6a is arranged so as to extend parallel to the inlet wall portion 16c1 in which the housing suction port 18 is formed and the outlet wall portion 16c2 in which the housing outlet 17 is formed.
（遠心送風機１）
　遠心送風機１は、ファン２と、ベルマウス３が形成されたスクロールケーシング４とを備えている。遠心送風機１は、図５及び図６に示すように、スクロールケーシング４の吐出部４２が仕切板１９に固定されている。 (Centrifugal blower 1)
The centrifugal blower 1 includes a fan 2 and a scroll casing 4 on which a bell mouth 3 is formed. In the centrifugal blower 1, as shown in FIGS. 5 and 6, the discharge portion 42 of the scroll casing 4 is fixed to the partition plate 19.
　空気調和装置４０は、図５に示すように、二つの遠心送風機１のそれぞれのファン２が出力軸６ａに取り付けられている。ファン２を有する遠心送風機１は、筐体吸入口１８から筐体１６内に吸い込まれ、筐体吹出口１７から空調対象空間へと吹き出される空気の流れを形成する。なお、筐体１６内に配置される遠心送風機１は、二つに限定されるものではなく、一つ又は三つ以上でもよい。 In the air conditioner 40, as shown in FIG. 5, each fan 2 of the two centrifugal blowers 1 is attached to the output shaft 6a. The centrifugal blower 1 having a fan 2 forms a flow of air that is sucked into the housing 16 from the housing suction port 18 and blown out from the housing outlet 17 to the air-conditioned space. The number of centrifugal blowers 1 arranged in the housing 16 is not limited to two, and may be one or three or more.
　図６に示すように、スクロールケーシング４の第２ケース部４６は、筐体吸入口１８と対向する周壁４ｃを有している。筐体吸入口１８と対向する周壁４ｃと、筐体吸入口１８との間には他の構成部材が設けられておらず、周壁４ｃと筐体吸入口１８とは直接面している。 As shown in FIG. 6, the second case portion 46 of the scroll casing 4 has a peripheral wall 4c facing the housing suction port 18. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
　ここで、図６に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、筐体吸入口１８の端部１８ａ及び端部１８ｂの両端部のそれぞれと回転軸ＲＳとを結ぶ仮想の直線を第１仮想線ＣＬと定義する。なお、回転軸ＲＳの軸方向に見た視点において、端部１８ａは筐体吸入口１８の上部の端部であり、端部１８ｂは、筐体吸入口１８の下部の端部である。 Here, as shown in FIG. 6, from the viewpoint seen in the axial direction of the rotation shaft RS of the fan 2, the end portions 18a and both ends of the end portion 18b of the housing suction port 18 are connected to the rotation shaft RS. The virtual straight line is defined as the first virtual line CL. From the viewpoint of the rotation shaft RS in the axial direction, the end portion 18a is the upper end portion of the housing suction port 18, and the end portion 18b is the lower end portion of the housing suction port 18.
　そして、図６に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと筐体吸入口１８とによって囲まれた略三角形状の領域を領域ＳＢと定義する。遠心送風機１の固定部２０は、図６に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと、筐体吸入口１８とによって囲まれた領域ＳＢ以外の部分に設けられている。 Then, as shown in FIG. 6, the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. do. As shown in FIG. 6, the fixed portion 20 of the centrifugal blower 1 has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
　第１固定部２０Ａは、回転軸ＲＳを介して第２固定部２０Ｂの反対側に設けられている。第２固定部２０Ｂは、回転軸ＲＳを介して第１固定部２０Ａの反対側に設けられている。なお、第１固定部２０Ａ及び第２固定部２０Ｂの位置関係は、当該関係に限定されるものではない。 The first fixed portion 20A is provided on the opposite side of the second fixed portion 20B via the rotation shaft RS. The second fixing portion 20B is provided on the opposite side of the first fixing portion 20A via the rotation shaft RS. The positional relationship between the first fixed portion 20A and the second fixed portion 20B is not limited to this relationship.
　同様に、第１分割部６１は、回転軸ＲＳを介して第２分割部６２の反対側に設けられている。第２分割部６２は、回転軸ＲＳを介して第１分割部６１の反対側に設けられている。なお、第１分割部６１及び第２分割部６２の位置関係は、当該関係に限定されるものではない。 Similarly, the first division portion 61 is provided on the opposite side of the second division portion 62 via the rotation shaft RS. The second division portion 62 is provided on the opposite side of the first division portion 61 via the rotation shaft RS. The positional relationship between the first division portion 61 and the second division portion 62 is not limited to this relationship.
（熱交換器１０）
　熱交換器１０は、上述したように遠心送風機１の吐出口４２ａと対向する位置に配置され、筐体１６内において、遠心送風機１が吐出する空気の風路上に配置されている。熱交換器１０は、筐体吸入口１８から筐体１６内に吸い込まれ、筐体吹出口１７から空調対象空間へと吹き出される空気の温度を調整する。なお、熱交換器１０は、公知の構造のものを適用できる。 (Heat exchanger 10)
As described above, the heat exchanger 10 is arranged at a position facing the discharge port 42a of the centrifugal blower 1, and is arranged in the housing 16 on the air passage of the air discharged by the centrifugal blower 1. The heat exchanger 10 adjusts the temperature of the air that is sucked into the housing 16 from the housing suction port 18 and blown out from the housing outlet 17 into the air-conditioned space. As the heat exchanger 10, a heat exchanger 10 having a known structure can be applied.
　空気調和装置４０は、空気調和装置４０の筐体吸入口１８から筐体吹出口１７に向かって、筐体吸入口１８、遠心送風機１のスクロールケーシング４、熱交換器１０、筐体吹出口１７の順に配置されている。天井吊り下げ型の空気調和装置４０の場合には、これらの構成部材が水平方向に沿った方向に配置されている。 The air conditioner 40 is directed from the housing inlet 18 of the air conditioner 40 toward the housing outlet 17, the housing suction port 18, the scroll casing 4 of the centrifugal blower 1, the heat exchanger 10, and the housing outlet 17. They are arranged in the order of. In the case of the ceiling-suspended air conditioner 40, these components are arranged in the horizontal direction.
　図７は、実施の形態１に係る空気調和装置４０の変形例の内部構成を概念的に示す側面図である。領域ＳＡは、上述したように、一例として、ファン２の回転軸ＲＳの軸方向と平行な方向に見た場合に、図３に示すように、縁部４２ｄと、境界部４２ｅとの間の領域であると説明した。しかし、領域ＳＡは、当該領域に限定されるものではない。例えば、図７に示すように、スクロールケーシング４の巻始部４１ａを通り、筐体１６の上面を構成する上面部１６ａと、筐体１６の下面を構成する下面部１６ｂとの間に垂直に結ばれた仮想の線を仮想線ＦＬと定義する。この場合に、領域ＳＡは、仮想線ＦＬと吐出口４２ａとの間に形成されたスクロールケーシング４の領域としてもよい。 FIG. 7 is a side view conceptually showing the internal configuration of a modified example of the air conditioner 40 according to the first embodiment. As described above, the region SA is, as an example, between the edge portion 42d and the boundary portion 42e when viewed in a direction parallel to the axial direction of the rotation axis RS of the fan 2, as shown in FIG. Explained that it is an area. However, the region SA is not limited to the region. For example, as shown in FIG. 7, it passes through the winding start portion 41a of the scroll casing 4 and is perpendicularly between the upper surface portion 16a forming the upper surface of the housing 16 and the lower surface portion 16b forming the lower surface of the housing 16. The connected virtual line is defined as the virtual line FL. In this case, the area SA may be the area of the scroll casing 4 formed between the virtual line FL and the discharge port 42a.
［空気調和装置４０の動作例］
　駆動源６の駆動によって、ファン２が回転すると、空調対象空間の空気は、筐体吸入口１８を通じて筐体１６の内部に吸い込まれる。筐体１６の内部に吸い込まれた空気は、ベルマウス３に沿って流れ、ファン２の内部に吸い込まれる。ファン２に吸い込まれた空気は、ファン２の径方向外側に向かって吹き出される。 [Operation example of air conditioner 40]
When the fan 2 is rotated by driving the drive source 6, the air in the air-conditioned space is sucked into the housing 16 through the housing suction port 18. The air sucked into the housing 16 flows along the bell mouth 3 and is sucked into the fan 2. The air sucked into the fan 2 is blown out toward the outside in the radial direction of the fan 2.
　ファン２から吹き出された空気は、スクロールケーシング４の内部を通過しながら昇圧される。昇圧された空気は、スクロールケーシング４の吐出口４２ａから吹き出され、熱交換器１０に供給される。熱交換器１０に供給された空気は、熱交換器１０を通過する際に、熱交換器１０の内部を流れる冷媒等の熱交換媒体と熱交換され、温度及び湿度調整される。熱交換器１０を通過した空気は、筐体吹出口１７から空調対象空間に吹き出される。 The air blown out from the fan 2 is boosted while passing through the inside of the scroll casing 4. The boosted air is blown out from the discharge port 42a of the scroll casing 4 and supplied to the heat exchanger 10. When the air supplied to the heat exchanger 10 passes through the heat exchanger 10, it exchanges heat with a heat exchange medium such as a refrigerant flowing inside the heat exchanger 10, and the temperature and humidity are adjusted. The air that has passed through the heat exchanger 10 is blown out from the housing outlet 17 into the air-conditioned space.
［空気調和装置４０の作用効果］
　遠心送風機１は、第１ケース部４５と第２ケース部４６とを互いに固定する固定部２０を有する。この固定部２０は、側壁４ａに設けられている。また、固定部２０は、ファン２の回転軸ＲＳの軸方向に見た視点において、筐体吸入口１８の両端部のそれぞれと回転軸ＲＳとを結ぶ仮想の直線である第１仮想線ＣＬと、筐体吸入口１８とによって囲まれた領域ＳＢ以外の部分に設けられている。空気調和装置４０は、固定部２０の位置が空気調和装置４０の筐体吸入口１８から遠ざけられているため、筐体吸入口１８から流入する速度の速い気流と固定部２０との干渉を抑制することができる。そのため、空気調和装置４０は、ベルマウス３を流れる気流の剥離が抑制され、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。 [Action and effect of air conditioner 40]
The centrifugal blower 1 has a fixing portion 20 for fixing the first case portion 45 and the second case portion 46 to each other. The fixing portion 20 is provided on the side wall 4a. Further, the fixed portion 20 is a first virtual line CL which is a virtual straight line connecting each of both ends of the housing suction port 18 and the rotating shaft RS from the viewpoint seen in the axial direction of the rotating shaft RS of the fan 2. , Is provided in a portion other than the region SB surrounded by the housing suction port 18. In the air conditioner 40, since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioning device 40, interference between the fast airflow flowing from the housing suction port 18 and the fixing portion 20 is suppressed. can do. Therefore, the air conditioner 40 can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
　図８は、比較例に係る遠心送風機１Ｌを回転軸ＲＳの軸方向に見た概念図である。図９は、比較例に係る遠心送風機１Ｌの分割された概念図である。図１０は、比較例に係る空気調和装置４０Ｌの内部構成の一例を示す概念図である。図８～図１０を用いて、比較例に係る遠心送風機１Ｌ及び空気調和装置４０Ｌについて説明する。 FIG. 8 is a conceptual diagram of the centrifugal blower 1L according to the comparative example as viewed in the axial direction of the rotating shaft RS. FIG. 9 is a divided conceptual diagram of the centrifugal blower 1L according to the comparative example. FIG. 10 is a conceptual diagram showing an example of the internal configuration of the air conditioner 40L according to the comparative example. The centrifugal blower 1L and the air conditioner 40L according to the comparative example will be described with reference to FIGS. 8 to 10.
　図１０に示すように、比較例に係る空気調和装置４０Ｌは、遠心送風機１Ｌを有する。遠心送風機１Ｌのスクロールケーシング４Ｌは、図８及び図９に示すように、ファン２を内包するため、下側ケース部４７Ｌ及び上側ケース部４８Ｌの２部品に分割されている。下側ケース部４７Ｌ及び上側ケース部４８Ｌの２部品に分割されているスクロールケーシング４Ｌは、スクロールケーシング４Ｌの吐出口４２ａを構成する吐出部４２Ｌに２部品が接合する分割部６０Ｌを有している。また、スクロールケーシング４Ｌは、吐出部４２Ｌの分割部６０に対して、スクロールケーシング４Ｌの吸込口５を挟んで反対側に更なる分割部６０Ｌを有している。 As shown in FIG. 10, the air conditioner 40L according to the comparative example has a centrifugal blower 1L. As shown in FIGS. 8 and 9, the scroll casing 4L of the centrifugal blower 1L is divided into two parts, a lower case portion 47L and an upper case portion 48L, in order to include the fan 2. The scroll casing 4L divided into two parts, the lower case portion 47L and the upper case portion 48L, has a divided portion 60L in which the two parts are joined to the discharge portion 42L constituting the discharge port 42a of the scroll casing 4L. .. Further, the scroll casing 4L has a further division portion 60L on the opposite side of the division portion 60 of the discharge portion 42L with the suction port 5 of the scroll casing 4L interposed therebetween.
　比較例に係る遠心送風機１Ｌは、分割された下側ケース部４７Ｌ及び上側ケース部４８Ｌの２部品を互いに固定するために各分割部６０Ｌの近傍であって、スクロールケーシング４Ｌの側壁面に固定部２０Ｌが設けられている。 The centrifugal blower 1L according to the comparative example is in the vicinity of each of the divided portions 60L in order to fix the two divided lower case portions 47L and the upper case portion 48L to each other, and is fixed to the side wall surface of the scroll casing 4L. 20L is provided.
　一般的に、空気調和装置の吸入口から流入した空気がスクロールケーシングのベルマウスに沿ってファン内部に流入する際、気流は、ファンの回転軸の周方向で速度分布を持ち、空気調和装置の吸入口側で風速が大きくなる。そのため、図１０の点線ＢＤで囲まれた領域に示すように、比較例に係る空気調和装置４０Ｌは、空気調和装置４０Ｌの筐体吸入口１８側に設けられた固定部２０Ｌと気流ＡＲとが干渉する恐れがある。空気調和装置４０Ｌは、筐体吸入口１８側に設けられた固定部２０Ｌと気流ＡＲとが干渉することによって、ベルマウスを流れる気流の剥離が生じスクロールケーシング４Ｌ内に流入する気体の風量が低減する場合ある。 Generally, when the air flowing in from the intake port of the air conditioner flows into the fan along the bell mouth of the scroll casing, the airflow has a velocity distribution in the circumferential direction of the rotation axis of the fan, and the air conditioner has a velocity distribution. The wind speed increases on the suction port side. Therefore, as shown in the area surrounded by the dotted line BD in FIG. 10, in the air conditioner 40L according to the comparative example, the fixed portion 20L provided on the housing suction port 18 side of the air conditioner 40L and the airflow AR are There is a risk of interference. In the air conditioner 40L, the air flow AR flowing through the bell mouth is separated due to the interference between the fixed portion 20L provided on the housing suction port 18 side and the air flow AR, and the air volume of the gas flowing into the scroll casing 4L is reduced. May be done.
　これに対し、実施の形態１に係る空気調和装置４０は、上述した構成によって固定部２０の位置が空気調和装置４０の筐体吸入口１８から遠ざけられているため、筐体吸入口１８から流入する速度の速い気流と固定部２０との干渉を抑制することができる。そのため、空気調和装置４０は、ベルマウス３を流れる気流の剥離が抑制され、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。 On the other hand, in the air conditioner 40 according to the first embodiment, since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioner 40 by the above-described configuration, the air conditioner 40 flows in from the housing suction port 18. It is possible to suppress the interference between the air flow having a high speed and the fixed portion 20. Therefore, the air conditioner 40 can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
　また、比較例に係る空気調和装置４０Ｌは、筐体吸入口１８側に設けられた固定部２０Ｌと気流ＡＲとが干渉することによって騒音を発生させ、空気調和装置４０Ｌから発せられる騒音を増加させる恐れがある。 Further, the air conditioner 40L according to the comparative example generates noise by interfering between the fixed portion 20L provided on the housing suction port 18 side and the airflow AR, and increases the noise emitted from the air conditioner 40L. There is a fear.
　これに対し、実施の形態１に係る空気調和装置４０は、上述した構成によって固定部２０の位置が空気調和装置４０の筐体吸入口１８から遠ざけられているため、筐体吸入口１８から流入する速度の速い気流と固定部２０との干渉を抑制することができる。そのため、空気調和装置４０は、筐体吸入口１８から流入する速度の速い気流と固定部２０との干渉によって生じる騒音の発生を抑制でき、比較例に係る空気調和装置４０Ｌと比較して空気調和装置４０から発せられる騒音を低下させることができる。 On the other hand, in the air conditioner 40 according to the first embodiment, since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioner 40 by the above-described configuration, the air conditioner 40 flows in from the housing suction port 18. It is possible to suppress the interference between the air flow having a high speed and the fixed portion 20. Therefore, the air conditioner 40 can suppress the generation of noise caused by the interference between the fast airflow flowing in from the housing suction port 18 and the fixed portion 20, and is air-conditioned as compared with the air conditioner 40L according to the comparative example. The noise emitted from the device 40 can be reduced.
　また、一般的に、スクロールケーシング内を流れる気流は、スクロールケーシングの吐出口に向かいながら昇圧される。比較例に係る空気調和装置４０Ｌは、スクロールケーシング４Ｌの吐出口４２ａを構成する吐出部４２Ｌに分割部６０Ｌが設けられているため、昇圧され高圧となった空気が吐出部４２Ｌの分割部６０Ｌから漏れやすくなる。 Also, in general, the airflow flowing in the scroll casing is boosted while heading toward the discharge port of the scroll casing. In the air conditioner 40L according to the comparative example, since the split portion 60L is provided in the discharge portion 42L constituting the discharge port 42a of the scroll casing 4L, the boosted and high-pressure air is discharged from the split portion 60L of the discharge portion 42L. It becomes easy to leak.
　これに対し、実施の形態１に係る空気調和装置４０は、吐出部４２以外の部分に分割部６０が形成されている。実施の形態１に係る空気調和装置４０は、高圧となった空気が通過する吐出部４２に分割部６０が形成されていないため、比較例に係る空気調和装置４０Ｌと比較して分割部６０における空気の漏れを抑制できる。 On the other hand, in the air conditioner 40 according to the first embodiment, a division portion 60 is formed in a portion other than the discharge portion 42. In the air conditioner 40 according to the first embodiment, since the split portion 60 is not formed in the discharge portion 42 through which the high-pressure air passes, the split portion 60 is compared with the air conditioner 40L according to the comparative example. Air leakage can be suppressed.
　また、実施の形態１に係る空気調和装置４０は、吐出部４２を流れる空気の流れる方向において、スクロールケーシング４の巻き始めの部分となる巻始部４１ａと、吐出口４２ａとの間の領域ＳＡ以外の部分に分割部６０が形成されている。すなわち、実施の形態１に係る空気調和装置４０の分割部６０は、吐出部４２には形成されていない。実施の形態１に係る空気調和装置４０は、高圧となった空気が通過する吐出部４２に分割部６０が形成されていないため、比較例に係る空気調和装置４０Ｌと比較して分割部６０における空気の漏れを抑制できる。 Further, the air conditioner 40 according to the first embodiment has a region SA between the winding start portion 41a, which is the winding start portion of the scroll casing 4, and the discharge port 42a in the direction in which the air flowing through the discharge portion 42 flows. The divided portion 60 is formed in a portion other than the above. That is, the divided portion 60 of the air conditioner 40 according to the first embodiment is not formed in the discharge portion 42. In the air conditioner 40 according to the first embodiment, since the split portion 60 is not formed in the discharge portion 42 through which the high-pressure air passes, the split portion 60 is compared with the air conditioner 40L according to the comparative example. Air leakage can be suppressed.
　また、空気調和装置４０は、筐体吸入口１８が形成された入口壁部１６ｃ１と、筐体吹出口１７が形成された出口壁部１６ｃ２とが熱交換器１０及び遠心送風機１を介して互いに反対側に位置する側壁面を構成している。そのため、空気調和装置４０は、入口壁部１６ｃ１、遠心送風機１、熱交換器１０、及び、出口壁部１６ｃ２を水平方向に沿った方向に配置することができ、筐体吸入口１８から筐体吹出口１７までの風路を簡易な構成で構築することができる。また、空気調和装置４０は、これらの構成部材を水平方向に沿った方向に配置することができ、例えば、天井吊り下げ型の空気調和装置に利用することができる。 Further, in the air conditioner 40, the inlet wall portion 16c1 in which the housing suction port 18 is formed and the outlet wall portion 16c2 in which the housing outlet 17 is formed are connected to each other via the heat exchanger 10 and the centrifugal blower 1. It constitutes a side wall surface located on the opposite side. Therefore, in the air conditioner 40, the inlet wall portion 16c1, the centrifugal blower 1, the heat exchanger 10, and the outlet wall portion 16c2 can be arranged in the horizontal direction, and the housing can be arranged from the housing suction port 18 to the housing. The air passage to the air outlet 17 can be constructed with a simple configuration. Further, the air conditioner 40 can arrange these components in a direction along the horizontal direction, and can be used, for example, in a ceiling-suspended air conditioner.
実施の形態２．
［空気調和装置４０Ａ］
　図１１は、実施の形態２に係る空気調和装置４０Ａの内部構成の一例を概念的に示す側面図である。なお、図１～図１０の空気調和装置４０と同一の構成を有する部位には同一の符号を付してその説明を省略する。実施の形態２に係る空気調和装置４０Ａは、収納された遠心送風機１Ａの分割部６０及び固定部２０の位置を更に特定するものである。従って、以下の説明では、図１１を用いて、遠心送風機１Ａの分割部６０及び固定部２０の位置に関する構成を中心に説明する。なお、実施の形態２に係る空気調和装置４０Ａ及び遠心送風機１Ａの構成は、特に説明しない限り実施の形態１に係る空気調和装置４０及び遠心送風機１の構成と同じである。 Embodiment 2.
[Air conditioner 40A]
FIG. 11 is a side view conceptually showing an example of the internal configuration of the air conditioner 40A according to the second embodiment. The parts having the same configuration as the air conditioner 40 of FIGS. 1 to 10 are designated by the same reference numerals, and the description thereof will be omitted. The air conditioner 40A according to the second embodiment further specifies the positions of the divided portion 60 and the fixed portion 20 of the stored centrifugal blower 1A. Therefore, in the following description, the configuration relating to the positions of the split portion 60 and the fixed portion 20 of the centrifugal blower 1A will be mainly described with reference to FIG. The configuration of the air conditioner 40A and the centrifugal blower 1A according to the second embodiment is the same as the configuration of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment unless otherwise specified.
　遠心送風機１Ａの分割部６０は、周壁４ｃの内部を流れる空気の流れる方向において、上流側に形成された第１分割部６１と、下流側に形成された第２分割部６２と、を有する。そして、空気調和装置４０Ａは、筐体吸入口１８と筐体吹出口１７との間において、第１分割部６１及び第２分割部６２のいずれか一方が、他方に対して筐体吹出口１７に近づいた位置に形成されている。すなわち、遠心送風機１Ａの第１分割部６１及び第２分割部６２は、実施の形態１のように直線上に位置せず、互いに左右方向にずれた位置に形成されている。 The split portion 60 of the centrifugal blower 1A has a first split portion 61 formed on the upstream side and a second split portion 62 formed on the downstream side in the direction in which the air flowing inside the peripheral wall 4c flows. Then, in the air conditioner 40A, between the housing suction port 18 and the housing outlet 17, either the first division portion 61 or the second division portion 62 has the housing outlet 17 with respect to the other. It is formed at a position close to. That is, the first division portion 61 and the second division portion 62 of the centrifugal blower 1A are not positioned on a straight line as in the first embodiment, but are formed at positions shifted from each other in the left-right direction.
　空気調和装置４０Ａの分割部６０には、固定部２０が設けられている。そのため、空気調和装置４０Ａは、筐体吸入口１８と筐体吹出口１７との間において、第１固定部２０Ａ及び第２固定部２０Ｂのいずれか一方が、他方に対して筐体吹出口１７に近づいた位置に形成されている。すなわち、遠心送風機１Ａの第１固定部２０Ａ及び第２固定部２０Ｂは、互いに左右方向にずれた位置に形成されている。 A fixed portion 20 is provided in the divided portion 60 of the air conditioner 40A. Therefore, in the air conditioner 40A, between the housing suction port 18 and the housing outlet 17, either the first fixing portion 20A or the second fixing portion 20B has the housing outlet 17 with respect to the other. It is formed at a position close to. That is, the first fixing portion 20A and the second fixing portion 20B of the centrifugal blower 1A are formed at positions shifted from each other in the left-right direction.
　ここで、ファン２の回転軸ＲＳの軸方向に見た視点において、第１分割部６１において吸込口５の内縁部に位置する部分を第１内縁部５ａとし、第２分割部６２において吸込口５の内縁部に位置する部分を第２内縁部５ｂと定義する。スクロールケーシング４は、ファン２の回転軸ＲＳの軸方向に見た視点において、第１内縁部５ａと第２内縁部５ｂとを結ぶ仮想の直線である第２仮想線ＴＬが、回転軸ＲＳよりも筐体吹出口１７に近づいた位置に形成されてもよい。 Here, from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2, the portion of the first division portion 61 located at the inner edge portion of the suction port 5 is defined as the first inner edge portion 5a, and the suction port in the second division portion 62. The portion located at the inner edge portion of 5 is defined as the second inner edge portion 5b. In the scroll casing 4, the second virtual line TL, which is a virtual straight line connecting the first inner edge portion 5a and the second inner edge portion 5b, is formed from the rotation axis RS from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. May be formed at a position close to the housing outlet 17.
［空気調和装置４０Ａの作用効果］
　空気調和装置４０Ａは、分割部６０が形成されている位置と、固定部２０が設けられている位置とが、実施の形態１の空気調和装置４０と同じため、空気調和装置４０と同様の効果を発揮させる。 [Action and effect of air conditioner 40A]
The air conditioner 40A has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
　空気調和装置４０Ａは、筐体吸入口１８と筐体吹出口１７との間において、第１分割部６１及び第２分割部６２のいずれか一方が、他方に対して筐体吹出口１７に近づいた位置に形成されている。空気調和装置４０Ａが当該構成を有している場合、第１固定部２０Ａ及び第２固定部２０Ｂのいずれか一方は、筐体吸入口１８から遠方に形成されている。 In the air conditioner 40A, one of the first division portion 61 and the second division portion 62 approaches the housing outlet 17 with respect to the other between the housing suction port 18 and the housing outlet 17. It is formed in a vertical position. When the air conditioner 40A has the above configuration, either one of the first fixing portion 20A and the second fixing portion 20B is formed far from the housing suction port 18.
　そのため、空気調和装置４０Ａは、筐体吸入口１８から遠方に形成されている固定部２０と干渉する気流の速度が低速となる。固定部２０と干渉する気流の速度が低速となることによって、ベルマウス３を流れる気流の剥離が抑制されるため、空気調和装置４０Ａは、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。また、固定部２０と干渉する気流の速度が低速となることによって、空気調和装置４０Ａは、気流と固定部２０との干渉によって生じる騒音の発生を抑制でき、空気調和装置４０Ｌと比較して空気調和装置４０Ａから発せられる騒音を低下させることができる。 Therefore, in the air conditioner 40A, the velocity of the air flow that interferes with the fixed portion 20 formed far from the housing suction port 18 becomes low. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40A suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do. Further, since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the air conditioner 40A can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40A can be reduced.
　なお、遠心送風機１Ａは、第１ケース部４５及び第２ケース部４６の表面積のバランスが考慮される。空気調和装置４０Ａが上記構成を有する場合、第１ケース部４５及び第２ケース部４６の表面積のバランスをとりつつ、固定部２０と筐体吸入口１８との距離を確保することができる。 In the centrifugal blower 1A, the balance of the surface areas of the first case portion 45 and the second case portion 46 is taken into consideration. When the air conditioner 40A has the above configuration, the distance between the fixing portion 20 and the housing suction port 18 can be secured while balancing the surface areas of the first case portion 45 and the second case portion 46.
　また、スクロールケーシング４は、第２仮想線ＴＬが、回転軸ＲＳよりも筐体吹出口１７に近づいた位置に形成されてもよい。空気調和装置４０Ｌが当該構成を有している場合、回転軸ＲＳを介して第１固定部２０Ａ及び第２固定部２０Ｂが互いに反対側に形成されている構成と比較して、第１固定部２０Ａ及び第２固定部２０Ｂの双方が筐体吸入口１８から遠方に形成されている。 Further, the scroll casing 4 may be formed at a position where the second virtual line TL is closer to the housing outlet 17 than the rotation axis RS. When the air conditioner 40L has the above configuration, the first fixing portion 20A and the second fixing portion 20B are formed on opposite sides of each other via the rotation shaft RS. Both 20A and the second fixing portion 20B are formed far from the housing suction port 18.
　そのため、空気調和装置４０Ａは、固定部２０と干渉する気流の速度が低速となる。固定部２０と干渉する気流の速度が低速となることによって、ベルマウス３を流れる気流の剥離が抑制されるため、空気調和装置４０Ａは、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。また、固定部２０と干渉する気流の速度が低速となることによって、空気調和装置４０Ａは、気流と固定部２０との干渉によって生じる騒音の発生を抑制でき、空気調和装置４０Ｌと比較して空気調和装置４０Ａから発せられる騒音を低下させることができる。 Therefore, in the air conditioner 40A, the velocity of the airflow that interferes with the fixed portion 20 becomes low. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40A suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do. Further, since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the air conditioner 40A can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40A can be reduced.
実施の形態３．
［空気調和装置４０Ｂ］
　図１２は、実施の形態３に係る空気調和装置４０Ｂの内部構成の一例を概念的に示す側面図である。なお、図１～図１１の空気調和装置４０等と同一の構成を有する部位には同一の符号を付してその説明を省略する。実施の形態３に係る空気調和装置４０Ｂは、収納された遠心送風機１Ｂの分割部６０の構成を更に特定するものである。従って、以下の説明では、図１２を用いて、遠心送風機１Ｂの分割部６０の構成を中心に説明する。なお、実施の形態３に係る空気調和装置４０Ｂ及び遠心送風機１Ｂの構成は、特に説明しない限り実施の形態１に係る空気調和装置４０及び遠心送風機１の構成と同じである。 Embodiment 3.
[Air conditioner 40B]
FIG. 12 is a side view conceptually showing an example of the internal configuration of the air conditioner 40B according to the third embodiment. The parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 11 are designated by the same reference numerals, and the description thereof will be omitted. The air conditioner 40B according to the third embodiment further specifies the configuration of the divided portion 60 of the stored centrifugal blower 1B. Therefore, in the following description, the configuration of the split portion 60 of the centrifugal blower 1B will be mainly described with reference to FIG. Unless otherwise specified, the configurations of the air conditioner 40B and the centrifugal blower 1B according to the third embodiment are the same as the configurations of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment.
　遠心送風機１Ｂは、スクロールケーシング４Ｂを有している。スクロールケーシング４Ｂの周壁４ｃは、壁の一部が平板状に形成された平面部６５を有している。平面部６５は、渦巻状に形成された周壁４ｃの一部に平面状に形成されている。ファン２の回転軸ＲＳの軸方向に見た視点において、平面部６５は、直線状に形成されている。 The centrifugal blower 1B has a scroll casing 4B. The peripheral wall 4c of the scroll casing 4B has a flat surface portion 65 in which a part of the wall is formed in a flat plate shape. The flat surface portion 65 is formed in a flat shape on a part of the peripheral wall 4c formed in a spiral shape. The flat surface portion 65 is formed in a straight line from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2.
　スクロールケーシング４Ｂは、分割部６０が平面部６５を分割するように形成されている。すなわち、平面部６５は、分割部６０に形成されている。第１分割部６１に形成されている平面部６５と、第２分割部６２に形成されている平面部６５とは、ファン２の回転軸ＲＳの軸方向に見た視点において平行に形成されてもよい。ただし、スクロールケーシング４は、第１分割部６１の平面部６５及び第２分割部６２の平面部６５が平行に形成されている構成に限定されるものではない。 The scroll casing 4B is formed so that the dividing portion 60 divides the flat surface portion 65. That is, the flat surface portion 65 is formed in the divided portion 60. The flat surface portion 65 formed in the first divided portion 61 and the flat surface portion 65 formed in the second divided portion 62 are formed in parallel from the viewpoint viewed in the axial direction of the rotation axis RS of the fan 2. May be good. However, the scroll casing 4 is not limited to the configuration in which the flat surface portion 65 of the first divided portion 61 and the flat surface portion 65 of the second divided portion 62 are formed in parallel.
［空気調和装置４０Ｂの作用効果］
　空気調和装置４０Ｂは、分割部６０が形成されている位置と、固定部２０が設けられている位置とが、実施の形態１の空気調和装置４０と同じため、空気調和装置４０と同様の効果を発揮させる。 [Action and effect of air conditioner 40B]
The air conditioner 40B has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
　また、スクロールケーシング４Ｂは、分割部６０が平面部６５を分割するように形成されている。樹脂製の第１ケース部４５及び樹脂製の第２ケース部４６の場合、分割部６０が平面部６５を有していることによって、第１ケース部４５及び第２ケース部４６を型から抜きやすく空気調和装置４０Ｂの製作作業が容易になる。 Further, the scroll casing 4B is formed so that the divided portion 60 divides the flat surface portion 65. In the case of the resin first case portion 45 and the resin second case portion 46, the first case portion 45 and the second case portion 46 are removed from the mold because the divided portion 60 has the flat surface portion 65. It is easy to manufacture the air conditioner 40B.
　また、第１分割部６１に形成されている平面部６５と、第２分割部６２に形成されている平面部６５とは、ファン２の回転軸ＲＳの軸方向に見た視点において平行に形成されている。樹脂製の第１ケース部４５及び第２ケース部４６の場合、第１分割部６１の平面部６５及び第２分割部６２の平面部６５が平行に形成されていれば、更に第１ケース部４５及び第２ケース部４６を型から抜きやすく空気調和装置４０Ｂの製作作業が容易になる。 Further, the flat surface portion 65 formed in the first divided portion 61 and the flat surface portion 65 formed in the second divided portion 62 are formed in parallel from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. Has been done. In the case of the first case portion 45 and the second case portion 46 made of resin, if the flat portion 65 of the first division portion 61 and the flat portion 65 of the second division portion 62 are formed in parallel, the first case portion is further formed. The 45 and the second case portion 46 can be easily removed from the mold, and the manufacturing work of the air conditioner 40B becomes easy.
実施の形態４．
［空気調和装置４０Ｃ］
　図１３は、実施の形態４に係る空気調和装置４０Ｃの内部構成の一例を概念的に示す側面図である。なお、図１～図１２の空気調和装置４０等と同一の構成を有する部位には同一の符号を付してその説明を省略する。実施の形態４に係る空気調和装置４０Ｃは、収納された遠心送風機１Ｃの分割部６０及び固定部２０の位置を更に特定するものである。従って、以下の説明では、図１３を用いて、遠心送風機１Ｃの分割部６０及び固定部２０の位置に関する構成を中心に説明する。なお、実施の形態４に係る空気調和装置４０Ｃ及び遠心送風機１Ｃの構成は、特に説明しない限り実施の形態１に係る空気調和装置４０及び遠心送風機１の構成と同じである。 Embodiment 4.
[Air conditioner 40C]
FIG. 13 is a side view conceptually showing an example of the internal configuration of the air conditioner 40C according to the fourth embodiment. The parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 12 are designated by the same reference numerals, and the description thereof will be omitted. The air conditioner 40C according to the fourth embodiment further specifies the positions of the divided portion 60 and the fixed portion 20 of the stored centrifugal blower 1C. Therefore, in the following description, the configuration relating to the positions of the split portion 60 and the fixed portion 20 of the centrifugal blower 1C will be mainly described with reference to FIG. The configuration of the air conditioner 40C and the centrifugal blower 1C according to the fourth embodiment is the same as the configuration of the air conditioner 40 and the centrifugal blower 1 according to the first embodiment unless otherwise specified.
　図１３に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと筐体吸入口１８とによって囲まれた略三角形状の領域を領域ＳＢと定義する。遠心送風機１Ｃの固定部２０は、図１３に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと、筐体吸入口１８とによって囲まれた領域ＳＢ以外の部分に設けられている。 As shown in FIG. 13, the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. As shown in FIG. 13, the fixed portion 20 of the centrifugal blower 1C has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
　更に、図１３に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、巻始部４１ａと回転軸ＲＳとを結ぶ仮想の直線である第１基準線ＳＬ１と定義し、第１基準線ＳＬ１において、巻始部４１ａと回転軸ＲＳとの中心の位置を中間位置Ｍ１と定義する。また、中間位置Ｍ１を含む上下方向に延びる仮想の直線を第２基準線ＳＬ２と定義する。第２基準線ＳＬ２は、例えば、重量方向に沿った線である。 Further, as shown in FIG. 13, from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2, it is defined as the first reference line SL1 which is a virtual straight line connecting the winding start portion 41a and the rotation axis RS. 1 In the reference line SL1, the position at the center of the winding start portion 41a and the rotation axis RS is defined as the intermediate position M1. Further, a virtual straight line extending in the vertical direction including the intermediate position M1 is defined as the second reference line SL2. The second reference line SL2 is, for example, a line along the weight direction.
　固定部２０は、第２基準線ＳＬ２と筐体吸入口１８との間に位置する側壁４ａに設けられている。したがって、固定部２０は、図１３に示すように、側壁４ａにおいて、領域ＳＢと第２基準線ＳＬ２との間の領域ＳＣに設けられている。 The fixing portion 20 is provided on the side wall 4a located between the second reference line SL2 and the housing suction port 18. Therefore, as shown in FIG. 13, the fixing portion 20 is provided in the region SC between the region SB and the second reference line SL2 on the side wall 4a.
［空気調和装置４０Ｃの作用効果］
　空気調和装置４０Ｃは、分割部６０が形成されている位置と、固定部２０が設けられている位置とが、実施の形態１の空気調和装置４０と同じため、空気調和装置４０と同様の効果を発揮させる。 [Action and effect of air conditioner 40C]
The air conditioner 40C has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
　また、固定部２０は、第２基準線ＳＬ２と筐体吸入口１８との間に位置する側壁４ａに設けられている。空気調和装置４０Ｃは、固定部２０の位置が空気調和装置４０Ｃの筐体吸入口１８から遠ざけられているため、筐体吸入口１８から流入する速度の速い気流と固定部２０との干渉を抑制することができる。そのため、空気調和装置４０Ｃは、ベルマウス３を流れる気流の剥離が抑制され、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。 Further, the fixing portion 20 is provided on the side wall 4a located between the second reference line SL2 and the housing suction port 18. In the air conditioner 40C, since the position of the fixing portion 20 is kept away from the housing suction port 18 of the air conditioning device 40C, interference between the fast airflow flowing in from the housing suction port 18 and the fixing portion 20 is suppressed. can do. Therefore, the air conditioner 40C can suppress the separation of the airflow flowing through the bell mouth 3 and suppress the decrease in the air volume of the gas flowing into the scroll casing 4.
　また、固定部２０が、第２基準線ＳＬ２と筐体吸入口１８との間に位置する側壁４ａに設けられていることにより、遠心送風機１Ｃは、第１ケース部４５及び第２ケース部４６の表面積のバランスをとることができる。 Further, since the fixing portion 20 is provided on the side wall 4a located between the second reference line SL2 and the housing suction port 18, the centrifugal blower 1C has the first case portion 45 and the second case portion 46. The surface area of the can be balanced.
実施の形態５．
［空気調和装置４０Ｄ］
　図１４は、実施の形態５に係る空気調和装置４０Ｄの内部構成の一例を概念的に示す側面図である。なお、図１～図１３の空気調和装置４０等と同一の構成を有する部位には同一の符号を付してその説明を省略する。実施の形態５に係る空気調和装置４０Ｄは、筐体１６Ｄにおいて筐体吸入口１８の形成位置が、実施の形態１に係る空気調和装置４０の筐体吸入口１８の形成位置と異なるものである。以下の説明では、図１４を用いて、筐体１６Ｄと遠心送風機１との関係を中心に説明する。なお、実施の形態５に係る空気調和装置４０Ｄの構成は、特に説明しない限り実施の形態１に係る空気調和装置４０の構成と同じである。 Embodiment 5.
[Air conditioner 40D]
FIG. 14 is a side view conceptually showing an example of the internal configuration of the air conditioner 40D according to the fifth embodiment. The parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 13 are designated by the same reference numerals, and the description thereof will be omitted. In the air conditioner 40D according to the fifth embodiment, the formation position of the housing suction port 18 in the housing 16D is different from the formation position of the housing suction port 18 of the air conditioner 40 according to the first embodiment. .. In the following description, the relationship between the housing 16D and the centrifugal blower 1 will be mainly described with reference to FIG. The configuration of the air conditioner 40D according to the fifth embodiment is the same as the configuration of the air conditioner 40 according to the first embodiment unless otherwise specified.
　筐体１６Ｄは、筐体吸入口１８が形成された入口壁部１６ｂ１と、筐体吹出口１７が形成された出口壁部１６ｃ２と、を有する。入口壁部１６ｂ１は、筐体１６Ｄの下面の壁部を構成する。入口壁部１６ｂ１は、下面部１６ｂの一部である。出口壁部１６ｃ２は、筐体１６Ｄの側面の壁部を構成する。 The housing 16D has an inlet wall portion 16b1 in which the housing suction port 18 is formed, and an outlet wall portion 16c2 in which the housing outlet 17 is formed. The entrance wall portion 16b1 constitutes a wall portion on the lower surface of the housing 16D. The entrance wall portion 16b1 is a part of the lower surface portion 16b. The outlet wall portion 16c2 constitutes a wall portion on the side surface of the housing 16D.
　図１４に示すように、スクロールケーシング４の第２ケース部４６は、筐体吸入口１８と対向する周壁４ｃを有している。筐体吸入口１８と対向する周壁４ｃと、筐体吸入口１８との間には他の構成部材が設けられておらず、周壁４ｃと筐体吸入口１８とは直接面している。 As shown in FIG. 14, the second case portion 46 of the scroll casing 4 has a peripheral wall 4c facing the housing suction port 18. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
　ここで、図１４に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、筐体吸入口１８の端部１８ｄ及び端部１８ｅの両端部のそれぞれと回転軸ＲＳとを結ぶ仮想の直線を第１仮想線ＣＬと定義する。回転軸ＲＳの軸方向に見た視点において、端部１８ｄは筐体吹出口１７側の端部であり、あるいは、筐体１６Ｄの前面側の端部である。端部１８ｅは、筐体１６Ｄの背面側の端部である。なお、ここでは、筐体１６Ｄにおいて、筐体吹出口１７が形成されている側面側を筐体１６Ｄの前面側とし、筐体吹出口１７とは反対の側面側を筐体１６Ｄの背面側としている。 Here, as shown in FIG. 14, from the viewpoint seen in the axial direction of the rotation shaft RS of the fan 2, each of the end portions 18d and the end portions 18e of the housing suction port 18 is connected to the rotation shaft RS. The virtual straight line is defined as the first virtual line CL. From the viewpoint of the rotating shaft RS in the axial direction, the end portion 18d is the end portion on the housing outlet 17 side, or the end portion on the front surface side of the housing 16D. The end portion 18e is an end portion on the back side of the housing 16D. Here, in the housing 16D, the side surface side on which the housing outlet 17 is formed is the front side of the housing 16D, and the side surface side opposite to the housing outlet 17 is the back side of the housing 16D. There is.
　そして、図１４に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと筐体吸入口１８とによって囲まれた略三角形状の領域を領域ＳＢと定義する。遠心送風機１の固定部２０は、図１４に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、第１仮想線ＣＬと、筐体吸入口１８とによって囲まれた領域ＳＢ以外の部分に設けられている。 Then, as shown in FIG. 14, the substantially triangular region surrounded by the first virtual line CL and the housing suction port 18 is defined as the region SB from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. do. As shown in FIG. 14, the fixed portion 20 of the centrifugal blower 1 has a region SB surrounded by the first virtual line CL and the housing suction port 18 from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2. It is provided in a part other than.
［空気調和装置４０Ｄの作用効果］
　空気調和装置４０Ｄは、分割部６０が形成されている位置と、固定部２０が設けられている位置とが、実施の形態１の空気調和装置４０と同じため、空気調和装置４０と同様の効果を発揮させる。 [Action and effect of air conditioner 40D]
The air conditioner 40D has the same effect as the air conditioner 40 because the position where the divided portion 60 is formed and the position where the fixed portion 20 is provided are the same as those of the air conditioner 40 of the first embodiment. To demonstrate.
　また、筐体吸入口１８が形成された入口壁部１６ｂ１は、筐体１６Ｄの下面の壁部を構成し、筐体吹出口１７が形成された出口壁部１６ｃ２は、筐体１６Ｄの側面の壁部を構成する。そのため、空気調和装置４０Ｄは、空気を下から吸い込み、空気調和された空気を側方に排出できる。 Further, the inlet wall portion 16b1 in which the housing suction port 18 is formed constitutes a wall portion on the lower surface of the housing 16D, and the outlet wall portion 16c2 in which the housing outlet 17 is formed is on the side surface of the housing 16D. Make up the wall. Therefore, the air conditioned device 40D can suck in air from below and discharge the air conditioned air to the side.
実施の形態６．
［空気調和装置４０Ｅ］
　図１５は、実施の形態６に係る空気調和装置４０Ｅの内部構成の一例を概念的に示す側面図である。なお、図１～図１４の空気調和装置４０等と同一の構成を有する部位には同一の符号を付してその説明を省略する。実施の形態６に係る空気調和装置４０Ｅは、筐体１６Ｅにおいて筐体吸入口１８の形成位置が、実施の形態１に係る空気調和装置４０の筐体吸入口１８の形成位置と異なるものである。以下の説明では、図１５を用いて、筐体１６Ｅと遠心送風機１との関係を中心に説明する。なお、実施の形態６に係る空気調和装置４０Ｅの構成は、特に説明しない限り実施の形態１に係る空気調和装置４０の構成と同じである。 Embodiment 6.
[Air conditioner 40E]
FIG. 15 is a side view conceptually showing an example of the internal configuration of the air conditioner 40E according to the sixth embodiment. The parts having the same configuration as the air conditioner 40 and the like shown in FIGS. 1 to 14 are designated by the same reference numerals, and the description thereof will be omitted. In the air conditioner 40E according to the sixth embodiment, the formation position of the housing suction port 18 in the housing 16E is different from the formation position of the housing suction port 18 of the air conditioner 40 according to the first embodiment. .. In the following description, the relationship between the housing 16E and the centrifugal blower 1 will be mainly described with reference to FIG. The configuration of the air conditioner 40E according to the sixth embodiment is the same as the configuration of the air conditioner 40 according to the first embodiment unless otherwise specified.
　筐体１６Ｅは、筐体吸入口１８が形成された入口壁部１６ｂ１と、筐体吹出口１７が形成された出口壁部１６ｃ２と、を有する。入口壁部１６ｂ１は、筐体１６Ｅの下面の壁部を構成する。入口壁部１６ｂ１は、下面部１６ｂの一部である。出口壁部１６ｃ２は、筐体１６Ｅの側面の壁部を構成する。 The housing 16E has an inlet wall portion 16b1 in which the housing suction port 18 is formed, and an outlet wall portion 16c2 in which the housing outlet 17 is formed. The entrance wall portion 16b1 constitutes a wall portion on the lower surface of the housing 16E. The entrance wall portion 16b1 is a part of the lower surface portion 16b. The outlet wall portion 16c2 constitutes a wall portion on the side surface of the housing 16E.
　また、筐体１６Ｅは、側面部１６ｃの１つとして、筐体吸入口１８が形成された入口壁部１６ｃ１を有する。筐体１６Ｅにおいて、入口壁部１６ｃ１と出口壁部１６ｃ２とは、熱交換器１０及び遠心送風機１を介して互いに反対側に位置する側壁面を構成している。筐体１６Ｅは、入口壁部１６ｂ１に形成された筐体吸入口１８及び入口壁部１６ｃ１に形成された筐体吸入口１８の２つの空気の吸入口が形成されている。 Further, the housing 16E has an inlet wall portion 16c1 in which the housing suction port 18 is formed as one of the side surface portions 16c. In the housing 16E, the inlet wall portion 16c1 and the outlet wall portion 16c2 form side wall surfaces located on opposite sides to each other via the heat exchanger 10 and the centrifugal blower 1. The housing 16E is formed with two air suction ports, a housing suction port 18 formed on the inlet wall portion 16b1 and a housing suction port 18 formed on the inlet wall portion 16c1.
　図１５に示すように、スクロールケーシング４の第２ケース部４６は、入口壁部１６ｂ１に形成された筐体吸入口１８及び入口壁部１６ｃ１に形成された筐体吸入口１８の２つの空気の吸入口と対向する周壁４ｃを有している。筐体吸入口１８と対向する周壁４ｃと、筐体吸入口１８との間には他の構成部材が設けられておらず、周壁４ｃと筐体吸入口１８とは直接面している。 As shown in FIG. 15, the second case portion 46 of the scroll casing 4 is formed by the housing suction port 18 formed in the inlet wall portion 16b1 and the housing suction port 18 formed in the inlet wall portion 16c1. It has a peripheral wall 4c facing the suction port. No other constituent members are provided between the peripheral wall 4c facing the housing suction port 18 and the housing suction port 18, and the peripheral wall 4c and the housing suction port 18 directly face each other.
　ここで、図１５に示すように、ファン２の回転軸ＲＳの軸方向に見た視点において、入口壁部１６ｃ１の筐体吸入口１８を形成する面と回転軸ＲＳとを結ぶ最短の仮想直線を横方向直線ＥＬ１と定義する。横方向直線ＥＬ１は、入口壁部１６ｃ１の筐体吸入口１８を形成する面に対して垂直な直線である。 Here, as shown in FIG. 15, the shortest virtual straight line connecting the surface forming the housing suction port 18 of the inlet wall portion 16c1 and the rotating shaft RS from the viewpoint seen in the axial direction of the rotating shaft RS of the fan 2. Is defined as the horizontal straight line EL1. The lateral straight line EL1 is a straight line perpendicular to the surface of the inlet wall portion 16c1 forming the housing suction port 18.
　また、ファン２の回転軸ＲＳの軸方向に見た視点において、入口壁部１６ｂ１の筐体吸入口１８を形成する面と回転軸ＲＳとを結ぶ最短の仮想直線を縦方向直線ＥＬ２と定義する。縦方向直線ＥＬ２は、入口壁部１６ｂ１の筐体吸入口１８を形成する面に対して垂直な直線である。 Further, from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2, the shortest virtual straight line connecting the surface forming the housing suction port 18 of the inlet wall portion 16b1 and the rotation axis RS is defined as the vertical straight line EL2. .. The vertical straight line EL2 is a straight line perpendicular to the surface of the inlet wall portion 16b1 forming the housing suction port 18.
　そして、ファン２の回転軸ＲＳの軸方向に見た視点において、入口壁部１６ｃ１の筐体吸入口１８、横方向直線ＥＬ１、入口壁部１６ｂ１の筐体吸入口１８、及び、縦方向直線ＥＬ２によって囲まれた領域を領域ＳＥと定義する。 Then, from the viewpoint seen in the axial direction of the rotation axis RS of the fan 2, the housing suction port 18 of the inlet wall portion 16c1, the horizontal straight line EL1, the housing suction port 18 of the inlet wall portion 16b1, and the vertical straight line EL2. The area surrounded by is defined as the area SE.
　空気調和装置４０Ｅは、領域ＳＥに固定部２０及び分割部６０を含まない。 The air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE.
［空気調和装置４０Ｅの作用効果］
　領域ＳＥは、入口壁部１６ｂ１に形成された筐体吸入口１８及び入口壁部１６ｃ１の２つの空気の吸入口に近い領域であり、空気の吸入量が比較的多い領域である。空気調和装置４０Ｅは、領域ＳＥに固定部２０及び分割部６０を含まない。空気調和装置４０Ｅが当該構成を有することで、固定部２０は、空気の吸入量が比較的多い領域に設けられていない。 [Action and effect of air conditioner 40E]
The region SE is a region close to the two air suction ports of the housing suction port 18 and the inlet wall portion 16c1 formed in the inlet wall portion 16b1, and is a region in which the amount of air sucked is relatively large. The air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE. Since the air conditioner 40E has this configuration, the fixing portion 20 is not provided in a region where the amount of air sucked is relatively large.
　そのため、空気調和装置４０Ｅは、固定部２０と干渉する気流の量を抑制することができる。空気調和装置４０Ｅは、固定部２０と干渉する気流の量が抑制されることによって、ベルマウス３を流れる気流の剥離が抑制されるため、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。また、空気調和装置４０Ｅは、固定部２０と干渉する気流の量が抑制されることによって、気流と固定部２０との干渉によって生じる騒音の発生を抑制でき、空気調和装置４０Ｌと比較して空気調和装置４０Ｅから発せられる騒音を低下させることができる。 Therefore, the air conditioner 40E can suppress the amount of airflow that interferes with the fixed portion 20. In the air conditioner 40E, the amount of airflow that interferes with the fixing portion 20 is suppressed, so that the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the decrease in the airflow amount of the gas flowing into the scroll casing 4 is suppressed. can do. Further, the air conditioner 40E can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20 by suppressing the amount of the airflow that interferes with the fixed portion 20, and the air conditioner 40E is compared with the air conditioner 40L. The noise emitted from the air conditioner 40E can be reduced.
　また、空気調和装置４０Ｅは、領域ＳＥに固定部２０及び分割部６０を含まない。空気調和装置４０Ｅは、入口壁部１６ｂ１に形成された筐体吸入口１８及び入口壁部１６ｃ１の２つの空気の吸入口から遠方に形成されている固定部２０と干渉する気流の速度が低速となる。固定部２０と干渉する気流の速度が低速となることによって、ベルマウス３を流れる気流の剥離が抑制されるため、空気調和装置４０Ｅは、スクロールケーシング４内に流入する気体の風量の低下を抑制することができる。また、固定部２０と干渉する気流の速度が低速となることによって、空気調和装置４０Ｅは、気流と固定部２０との干渉によって生じる騒音の発生を抑制でき、空気調和装置４０Ｌと比較して空気調和装置４０Ｅから発せられる騒音を低下させることができる。 Further, the air conditioner 40E does not include the fixing portion 20 and the dividing portion 60 in the region SE. The air conditioner 40E has a low velocity of airflow that interferes with the fixed portion 20 formed far from the two air suction ports of the housing suction port 18 formed in the inlet wall portion 16b1 and the inlet wall portion 16c1. Become. Since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the separation of the airflow flowing through the bell mouth 3 is suppressed, so that the air conditioner 40E suppresses a decrease in the air volume of the gas flowing into the scroll casing 4. can do. Further, since the velocity of the airflow that interferes with the fixed portion 20 becomes low, the air conditioner 40E can suppress the generation of noise caused by the interference between the airflow and the fixed portion 20, and the air is compared with the air conditioner 40L. The noise emitted from the air conditioner 40E can be reduced.
　なお、上記実施の形態１～実施の形態６では、主板１１の両方に複数の羽根２ｄが形成された両吸込型のファン２を備えた両吸込型の遠心送風機１を例に挙げた。しかし、実施の形態１～実施の形態６は、主板１１の片側のみに複数の羽根２ｄが形成された片吸込型のファン２を備えた片吸込型の遠心送風機１にも適用できる。 In the first to sixth embodiments described above, a double suction type centrifugal blower 1 provided with a double suction type fan 2 in which a plurality of blades 2d are formed on both of the main plates 11 is given as an example. However, the first to sixth embodiments can also be applied to a single suction type centrifugal blower 1 provided with a single suction type fan 2 in which a plurality of blades 2d are formed only on one side of the main plate 11.
　上記の各実施の形態１～６は、互いに組み合わせて実施することが可能である。また、以上の実施の形態に示した構成は、一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 Each of the above embodiments 1 to 6 can be implemented in combination with each other. Further, the configuration shown in the above embodiment is an example, and can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible.
　１　遠心送風機、１Ａ　遠心送風機、１Ｂ　遠心送風機、１Ｃ　遠心送風機、１Ｌ　遠心送風機、２　ファン、２ａ　主板、２ａ１　周縁部、２ｂ　軸部、２ｄ　羽根、２ｅ　吸込口、３　ベルマウス、４　スクロールケーシング、４Ｂ　スクロールケーシング、４Ｌ　スクロールケーシング、４ａ　側壁、４ａ１　第１側壁、４ａ２　第２側壁、４ｃ　周壁、４ｃ１１　第１端部、４ｃ１２　第２端部、５　吸込口、５ａ　第１内縁部、５ｂ　第２内縁部、６　駆動源、６ａ　出力軸、９ａ　モータサポート、１０　熱交換器、１１　主板、１３　断熱材、１６　筐体、１６Ｄ　筐体、１６Ｅ　筐体、１６ａ　上面部、１６ｂ　下面部、１６ｂ１　入口壁部、１６ｃ　側面部、１６ｃ１　入口壁部、１６ｃ２　出口壁部、１７　筐体吹出口、１８　筐体吸入口、１８ａ　端部、１８ｂ　端部、１８ｄ　端部、１８ｅ　端部、１９　仕切板、２０　固定部、２０Ａ　第１固定部、２０Ｂ　第２固定部、２０Ｌ　固定部、２１　第１係合部、２２　第２係合部、２５　送風室、２６　熱交換室、４０　空気調和装置、４０Ａ　空気調和装置、４０Ｂ　空気調和装置、４０Ｃ　空気調和装置、４０Ｄ　空気調和装置、４０Ｅ　空気調和装置、４０Ｌ　空気調和装置、４１　スクロール部、４１ａ　巻始部、４１ｂ　巻終部、４２　吐出部、４２Ｌ　吐出部、４２ａ　吐出口、４２ｂ　延設板、４２ｃ　ディフューザ板、４２ｄ　縁部、４２ｅ　境界部、４３　舌部、４５　第１ケース部、４６　第２ケース部、４７Ｌ　下側ケース部、４８Ｌ　上側ケース部、６０　分割部、６０Ｌ　分割部、６１　第１分割部、６２　第２分割部、６５　平面部、ＡＲ　気流、ＢＤ　点線、ＣＬ　第１仮想線、ＥＬ１　横方向直線、ＥＬ２　縦方向直線、ＦＬ　仮想線、ＩＲ　矢印、Ｍ１　中間位置、ＯＲ　矢印、Ｒ　回転方向、ＲＳ　回転軸、ＳＡ　領域、ＳＢ　領域、ＳＣ　領域、ＳＥ　領域、ＳＬ１　第１基準線、ＳＬ２　第２基準線、ＴＬ　第２仮想線。 1 Centrifugal blower, 1A Centrifugal blower, 1B Centrifugal blower, 1C Centrifugal blower, 1L Centrifugal blower, 2 Fan, 2a Main plate, 2a1 Peripheral part, 2b Shaft part, 2d blade, 2e suction port, 3 Bellmouth, 4 Scroll casing, 4B Scroll casing, 4L scroll casing, 4a side wall, 4a1, 1st side wall, 4a2, 2nd side wall, 4c peripheral wall, 4c11, 1st end, 4c12, 2nd end, 5 suction port, 5a, 1st inner edge, 5b, 2nd inner edge , 6 drive source, 6a output shaft, 9a motor support, 10 heat exchanger, 11 main plate, 13 heat insulating material, 16 housing, 16D housing, 16E housing, 16a upper surface, 16b lower surface, 16b1 entrance wall, 16c side surface, 16c1 inlet wall, 16c2 outlet wall, 17 housing outlet, 18 housing suction port, 18a end, 18b end, 18d end, 18e end, 19 partition plate, 20 fixing part, 20A 1st fixing part, 20B 2nd fixing part, 20L fixing part, 21 1st engaging part, 22 2nd engaging part, 25 blower chamber, 26 heat exchange chamber, 40 air conditioner, 40A air conditioner, 40B Air conditioner, 40C air conditioner, 40D air conditioner, 40E air conditioner, 40L air conditioner, 41 scroll part, 41a winding start part, 41b winding end part, 42 discharge part, 42L discharge part, 42a discharge port, 42b extension plate, 42c diffuser plate, 42d edge, 42e boundary, 43 tongue, 45 first case, 46 second case, 47L lower case, 48L upper case, 60 division, 60L division Part, 61 1st division, 62 2nd division, 65 plane, AR airflow, BD dotted line, CL 1st virtual line, EL1 horizontal straight, EL2 vertical straight, FL virtual line, IR arrow, M1 intermediate position , OR arrow, R rotation direction, RS rotation axis, SA area, SB area, SC area, SE area, SL1 1st reference line, SL2 2nd reference line, TL 2nd virtual line.

Claims (7)

  1. 　回転駆動されるファンと、前記ファンが収納され、渦巻形状に形成された周壁及び空気の吸込口が設けられた側壁を有するスクロールケーシングと、を備えた遠心送風機と、
    　前記ファンに駆動力を付与する駆動源と、
    　前記スクロールケーシングに形成された空気の吐出口と対向する位置に配置された熱交換器と、
    　前記遠心送風機、前記駆動源及び前記熱交換器が収納され、前記ファンが配置される送風室と前記熱交換器が配置される熱交換室とに内部を隔てる仕切板を有する筐体であって、前記送風室に流入する空気が通過する筐体吸入口と、前記熱交換室から流出する空気が通過する筐体吹出口と、が形成された筐体と、
    を備え、
    　前記スクロールケーシングは、
    　前記吐出口を形成する吐出部を有し、前記吐出部が前記仕切板に固定される第１ケース部と、
    　前記筐体吸入口と対向する前記周壁を有し、前記第１ケース部に着脱自在に固定される第２ケース部と、
    　前記側壁に設けられ、前記第１ケース部と前記第２ケース部とを固定する固定部と、
    を有し、
    　前記第１ケース部と前記第２ケース部との接合部分である分割部は、
    　前記側壁と前記周壁とに形成されていると共に、前記吐出部以外の部分に形成されており、
    　前記固定部は、
    　前記ファンの回転軸の軸方向に見た視点において、前記筐体吸入口の両端部のそれぞれと前記回転軸とを結ぶ仮想の直線である第１仮想線と、前記筐体吸入口とによって囲まれた領域以外の部分に設けられている空気調和装置。     A centrifugal blower comprising a rotary-driven fan and a scroll casing in which the fan is housed and has a peripheral wall formed in a spiral shape and a side wall provided with an air suction port.
    A drive source that applies driving force to the fan and
    A heat exchanger arranged at a position facing the air discharge port formed in the scroll casing, and
    A housing having a partition plate in which the centrifugal blower, the drive source, and the heat exchanger are housed, and the inside is separated between the blower chamber in which the fan is arranged and the heat exchange chamber in which the heat exchanger is arranged. A housing in which a housing suction port through which air flowing into the air blower chamber passes and a housing outlet through which air flowing out of the heat exchange chamber passes are formed.
    With
    The scroll casing
    A first case portion having a discharge portion forming the discharge port and the discharge portion being fixed to the partition plate,
    A second case portion that has the peripheral wall facing the housing suction port and is detachably fixed to the first case portion.
    A fixing portion provided on the side wall and fixing the first case portion and the second case portion,
    Have,
    The split portion, which is the joint portion between the first case portion and the second case portion, is
    It is formed on the side wall and the peripheral wall, and is also formed on a portion other than the discharge portion.
    The fixed part is
    From the viewpoint seen in the axial direction of the rotation axis of the fan, it is surrounded by a first virtual line which is a virtual straight line connecting each of both ends of the housing suction port and the rotation axis, and the housing suction port. An air conditioner provided in a part other than the designated area.
  2. 　前記筐体は、
    　前記筐体吸入口が形成された入口壁部と、
    　前記筐体吹出口が形成された出口壁部と、
    を有し、
    　前記入口壁部と前記出口壁部とは、前記熱交換器及び前記遠心送風機を介して互いに反対側に位置する側壁面を構成している請求項１に記載の空気調和装置。     The housing is
    The inlet wall portion on which the housing suction port is formed and
    The outlet wall portion on which the housing outlet is formed and
    Have,
    The air conditioner according to claim 1, wherein the inlet wall portion and the outlet wall portion form side wall surfaces located on opposite sides to each other via the heat exchanger and the centrifugal blower.
  3. 　前記分割部は、
    　前記周壁の内部を流れる空気の流れる方向において、
    　上流側に形成された第１分割部と、
    　下流側に形成された第２分割部と、
    を有し、
    　前記筐体吸入口と前記筐体吹出口との間において、前記第１分割部及び前記第２分割部のいずれか一方は、他方に対して前記筐体吹出口に近づいた位置に形成されている請求項１又は２に記載の空気調和装置。     The divided portion is
    In the direction of air flowing inside the peripheral wall
    The first division formed on the upstream side and
    The second division formed on the downstream side and
    Have,
    Between the housing inlet and the housing outlet, either one of the first divided portion and the second divided portion is formed at a position closer to the housing outlet with respect to the other. The air conditioner according to claim 1 or 2.
  4. 　前記回転軸の軸方向に見た視点において、前記第１分割部において前記吸込口の内縁部に位置する部分を第１内縁部とし、前記第２分割部において前記吸込口の内縁部に位置する部分を第２内縁部とした場合に、
    　前記スクロールケーシングは、
    　前記第１内縁部と前記第２内縁部とを結ぶ仮想の直線である第２仮想線が、前記回転軸よりも前記吐出口に近づいた位置に形成されている請求項３に記載の空気調和装置。     From the viewpoint seen in the axial direction of the rotation axis, the portion of the first division portion located at the inner edge portion of the suction port is defined as the first inner edge portion, and the portion located at the inner edge portion of the suction port in the second division portion is located. When the part is the second inner edge,
    The scroll casing
    The air conditioning according to claim 3, wherein the second virtual line, which is a virtual straight line connecting the first inner edge portion and the second inner edge portion, is formed at a position closer to the discharge port than the rotation axis. Device.
  5. 　前記固定部は、
    　前記回転軸の軸方向に見た視点において、前記スクロールケーシングの巻き始めの部分となる巻始部と前記回転軸とを結ぶ仮想の直線である第１基準線の中心の位置を中間位置とした場合に、
    　前記固定部は、
    　前記中間位置を含む上下方向に延びる仮想の直線である第２基準線と前記筐体吸入口との間に位置する前記側壁に設けられている請求項１～４のいずれか１項に記載の空気調和装置。     The fixed part is
    From the viewpoint seen in the axial direction of the rotation axis, the position of the center of the first reference line, which is a virtual straight line connecting the winding start portion which is the winding start portion of the scroll casing and the rotation axis, is set as the intermediate position. In case,
    The fixed part is
    The invention according to any one of claims 1 to 4, which is provided on the side wall located between the second reference line, which is a virtual straight line extending in the vertical direction including the intermediate position, and the housing suction port. Air conditioner.
  6. 　前記筐体は、
    　前記筐体吸入口が形成された入口壁部と、
    　前記筐体吹出口が形成された出口壁部と、
    を有し、
    　前記入口壁部は、
    　前記筐体の下面の壁部を構成し、
    　前記出口壁部は、
    　前記筐体の側面の壁部を構成する請求項１に記載の空気調和装置。     The housing is
    The inlet wall portion on which the housing suction port is formed and
    The outlet wall portion on which the housing outlet is formed and
    Have,
    The entrance wall is
    A wall portion on the lower surface of the housing is formed.
    The exit wall is
    The air conditioner according to claim 1, wherein the wall portion on the side surface of the housing is formed.
  7. 　前記周壁は、
    　壁の一部が平板状に形成された平面部を有しており、
    　前記スクロールケーシングは、
    　前記分割部が前記平面部を分割するように形成されている請求項１～５のいずれか１項に記載の空気調和装置。     The peripheral wall
    A part of the wall has a flat surface formed in a flat plate shape,
    The scroll casing
    The air conditioner according to any one of claims 1 to 5, wherein the dividing portion is formed so as to divide the plane portion.
PCT/JP2020/017759 2020-04-24 2020-04-24 Air conditioner WO2021214999A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2020/017759 WO2021214999A1 (en) 2020-04-24 2020-04-24 Air conditioner
JP2022516811A JP7479453B2 (en) 2020-04-24 2020-04-24 Air Conditioning Equipment
EP20932608.1A EP4141336A4 (en) 2020-04-24 2020-04-24 Air conditioner
TW109139884A TWI779393B (en) 2020-04-24 2020-11-16 Air conditioner

Applications Claiming Priority (1)

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JPWO2021214999A1 (en) 2021-10-28
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JP7479453B2 (en) 2024-05-08
EP4141336A1 (en) 2023-03-01

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