WO2020230206A1 - Air-conditioning device - Google Patents

Air-conditioning device Download PDF

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Publication number
WO2020230206A1
WO2020230206A1 PCT/JP2019/018798 JP2019018798W WO2020230206A1 WO 2020230206 A1 WO2020230206 A1 WO 2020230206A1 JP 2019018798 W JP2019018798 W JP 2019018798W WO 2020230206 A1 WO2020230206 A1 WO 2020230206A1
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WO
WIPO (PCT)
Prior art keywords
air conditioner
air
guide member
end portion
centrifugal fan
Prior art date
Application number
PCT/JP2019/018798
Other languages
French (fr)
Japanese (ja)
Inventor
惇司 河野
拓矢 寺本
栗原　誠
一樹 磯村
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/JP2019/018798 priority Critical patent/WO2020230206A1/en
Priority to JP2021519049A priority patent/JP7275257B2/en
Publication of WO2020230206A1 publication Critical patent/WO2020230206A1/en

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Classifications

    • 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

Definitions

  • the present invention relates to an air conditioner.
  • Japanese Unexamined Patent Publication No. 2016-080208 discloses an air conditioner provided with a wind direction plate arranged on the back side opposite to the air suction surface on the air suction port side of the bell mouth.
  • the wind direction plate extends in a direction perpendicular to the rotation direction of the centrifugal fan.
  • a main object of the present invention is to provide an air conditioner having a higher driving efficiency of a centrifugal fan as compared with the above air conditioner.
  • the air conditioner according to the present invention includes a centrifugal fan, a bell mouth that guides air to the centrifugal fan, and a wind guide member that is arranged on the outer peripheral side of the bell mouth in the radial direction with respect to the rotation axis of the centrifugal fan. ..
  • the air guide member has a front surface facing forward in the rotation direction of the centrifugal fan.
  • the front surface of the wind guide member has a first end portion located on the innermost peripheral side and a second end portion located on the outermost peripheral side in the radial direction. The first end portion is arranged in front of the second end portion in the rotation direction.
  • FIG. It is a partial perspective view of the air conditioner shown in FIG. It is a partial plan view of the air conditioner shown in FIG. It is a figure which shows the rotation direction of a centrifugal fan, and the air flow around a wind guide member in the partial plan view shown in FIG. It is a partial side view which shows the air conditioner shown in FIG. It is a partial side view which shows the air conditioner which concerns on Embodiment 2.
  • FIG. It is a partial plan view which shows the air conditioner which concerns on Embodiment 3.
  • FIG. It is a partial plan view which shows the air conditioner which concerns on Embodiment 4.
  • FIG. It is a partial plan view which shows the air conditioner which concerns on Embodiment 5.
  • FIG. 9 It is a graph which shows the relationship between the ratio L / M of the distance L to the distance M shown in FIG. 9 and the power consumption for rotating the centrifugal fan of the air conditioner shown in FIG. It is a perspective view which shows the air conditioner which concerns on Embodiment 6. It is sectional drawing which shows the air conditioner which concerns on Embodiment 7. It is a partial plan view which shows the modification of the air conditioner which concerns on Embodiment 1.
  • Embodiment 1. 1 to 4 are diagrams showing the air conditioner 100 according to the first embodiment.
  • the air conditioner 100 according to the first embodiment includes a centrifugal fan 10, a bell mouth 20, a wind guide member 30, a heat exchanger 40, a casing 50, and a motor. 60 and.
  • the centrifugal fan 10 is rotated about the rotation center axis O by the motor 60.
  • the direction in which the rotation center axis O extends, the radial direction with respect to the rotation center axis O, and the rotation direction of the centrifugal fan 10 are simply referred to as an axial direction, a radial direction, and a rotation direction.
  • FIG. 1 to 4 are diagrams showing the air conditioner 100 according to the first embodiment.
  • the air conditioner 100 according to the first embodiment includes a centrifugal fan 10, a bell mouth 20, a wind guide member 30, a heat exchanger 40, a casing 50, and a motor. 60 and.
  • the centrifugal fan 10 is rotated about the
  • FIG. 1 the structure of the cross section of the centrifugal fan 10 passing through the rotation center axis O is shown, but the structure of the cross section of the bell mouth 20 and the air guiding member 30 is parallel to the above cross section. .. Further, in FIG. 2, illustration of parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 is omitted. In FIG. 3, parts other than the bell mouth 20 and the air guide member 30 are not shown. In FIG. 4, parts other than the bell mouth 20, the air guide member 30, and the heat exchanger 40 are not shown.
  • the centrifugal fan 10 is rotationally symmetric at an arbitrary order with respect to the rotation center axis O.
  • the centrifugal fan 10 includes a main plate 11, a plurality of blades 12, and a side plate 13.
  • the centrifugal fan 10 has a suction port 14 which is arranged in the center of the radial direction and is open toward the axial direction, and a suction port 14 which is arranged outside the suction port 14 in the radial direction and has the shaft.
  • An air outlet 15 that opens in a direction intersecting with the direction is provided.
  • the main plate 11 is fixed to the rotating shaft of the motor 60.
  • the main plate 11 is arranged at the center in the radial direction and has a boss portion that is convex toward the suction port 14 when the main plate 11 is viewed from the side plate 13 side.
  • the main plate 11 further has, for example, a flat portion that is provided so as to surround the boss portion in the radial direction and extends in a direction perpendicular to the rotation axis.
  • Each of the plurality of wings 12 is arranged between the main plate 11 and the side plate 13.
  • Each wing 12 connects, for example, between the flat portion of the main plate 11 and the side plate 13.
  • the wings 12 are arranged so as to be spaced apart from each other in the rotation direction.
  • the inner peripheral end portion of each wing 12 is arranged on the outer peripheral side of the outer peripheral end portion of the boss portion, for example.
  • the side plate 13 is provided in an annular shape along the rotation direction.
  • the side plate 13 has an outer peripheral end portion 13b provided so as to form an air outlet 15 between the inner peripheral end portion 13a provided so as to form a suction port 14 with the centrifugal fan 10 and the main plate 11. And have.
  • the inner peripheral end portion 13a is arranged at a position farther from the flat portion of the main plate 11 than the outer peripheral end portion 13b in the axial direction.
  • the side plate 13 In the cross section along the rotation center axis O, the side plate 13 has a curved shape in which the center of curvature is arranged on the outer peripheral side of the side plate 13 in the radial direction.
  • the planar shape of the suction port 14 is a circle centered on the rotation center axis O.
  • the centrifugal fan 10 has a plurality of outlets 15 arranged side by side in the rotation direction. Each air outlet 15 is arranged between the main plate 11 and the side plate 13 in the axial direction, and is arranged between two adjacent blades 12 in the rotational direction.
  • the bell mouth 20 is provided so as to guide the air flowing into the casing 50 to the centrifugal fan 10 when the air conditioner 100 is driven. Further, the bell mouth 20 has an upstream space located between the intake port 51 provided in the casing 50 and the suction port 14 of the centrifugal fan 10 inside the casing 50, and the outlet 15 of the centrifugal fan 10 and the casing. It is provided so as to partition the downstream space located between the air outlet 52 provided in the 50.
  • the bell mouth 20 is arranged on the side opposite to the main plate 11 with respect to the side plate 13 of the centrifugal fan 10 in the above axial direction.
  • the bell mouth 20 includes a first part 21 and a second part 22.
  • the first part 21 and the second part 22 are provided in an annular shape along the rotation direction.
  • the first part 21 is arranged on the inner peripheral side of the second part 22.
  • the first portion 21 has an inner peripheral end portion forming the inner peripheral end portion 23 of the bell mouth 20, and an outer peripheral end portion connected to the inner peripheral end portion of the second portion 22.
  • the inner peripheral end portion 23 of the bell mouth 20 is arranged on the inner peripheral side of the suction port 14 with the centrifugal fan 10 in the radial direction, and is arranged on the main plate 11 side of the suction port 14 in the axial direction.
  • the first part 21 is provided so that the distance between two points facing each other across the rotation center axis O in the cross section along the rotation center axis O gradually becomes shorter toward the centrifugal fan 10 side in the axial direction. ing.
  • the first portion 21 has a curved shape in which the center of curvature is arranged on the outer peripheral side of the first portion 21 in the radial direction.
  • the second portion 22 has the inner peripheral end portion connected to the outer peripheral end portion of the first portion 21, and the outer peripheral end portion connected to the casing 50.
  • the second portion 22 has, for example, a flat portion extending along the radial direction.
  • the planar shape of the inner peripheral end portion 23 of the bell mouth 20 is a circle centered on the rotation center axis O.
  • the bell mouth 20 has a first surface 20A facing the upstream space and a second surface 20B located on the opposite side of the first surface 20A.
  • the first part 21 has an inner peripheral surface facing the inner circumference in the radial direction and an outer peripheral surface facing the outer circumference in the radial direction.
  • the second part 22 has a front surface facing the intake port 51 side in the axial direction and a back surface facing the centrifugal fan 10 side in the axial direction.
  • the first surface 20A comprises an inner peripheral surface of the first part 21 and a front surface of the second part 22.
  • the second surface 20B includes an outer peripheral surface of the first portion 21 and a back surface of the second portion 22.
  • the heat exchanger 40 is arranged so as to face the outlet 15 of the centrifugal fan 10 in the radial direction.
  • the heat exchanger 40 is arranged so as to surround the outlet 15 of the centrifugal fan 10.
  • the heat exchanger 40 has an intake surface 41 facing the centrifugal fan 10. The gas blown out from the outlet 15 of the centrifugal fan 10 exchanges heat with the refrigerant flowing inside the heat exchanger 40 in the heat exchanger 40.
  • the shape of the intake surface 41 of the heat exchanger 40 is, for example, a substantially square shape.
  • the intake surface 41 has a first intake surface 41A and a second intake surface 41B arranged side by side in the rotation direction.
  • the second intake surface 41B is arranged on the front side in the rotation direction with respect to the first intake surface 41A, and extends in a direction intersecting with the first intake surface 41A.
  • the radial distance between the inner peripheral end 23 of the bell mouth 20 and the intake surface 41 of the heat exchanger 40 changes in the rotational direction.
  • the annular space formed between the inner peripheral end portion 23 of the bell mouth 20 and the intake surface 41 of the heat exchanger 40 is a narrow space portion having a relatively narrow radial width and the radial direction. Includes a large space that is wider than a narrow space.
  • the narrow space portion and the large space portion are connected in the rotation direction.
  • a first narrow space portion and first and second large space portions are formed between the inner peripheral end portion 23 of the bell mouth 20 and the first intake surface 41A.
  • the first wide space portion is arranged behind the first narrow space portion in the rotation direction.
  • the second wide space portion is arranged on the front side in the rotational direction with respect to the first narrow space portion.
  • a second narrow space portion and a third and fourth wide space portion are formed between the inner peripheral end portion 23 of the bell mouth 20 and the second intake surface 41B.
  • the third vast space portion is arranged on the front side in the rotation direction from the second vast space portion, and is arranged on the rear side in the rotation direction from the second narrow space portion.
  • the fourth wide space portion is arranged on the front side in the rotation direction with respect to the second narrow space portion.
  • the first vast space portion, the first narrow space portion, the second vast space portion, the third vast space portion, the second narrow space portion, and the fourth vast space portion are sequentially arranged from the rear side to the front side in the rotation direction. It is in a row
  • the casing 50 houses the centrifugal fan 10, the bell mouth 20, the air guide member 30, and the heat exchanger 40 inside.
  • the casing 50 is provided with an intake port 51 below the suction port 14 for taking in indoor air into the suction port 14.
  • a grill is attached to the intake port 51.
  • a plurality of outlets 52 are provided outside the intake port 51 in the radial direction to blow out the air blown out from the outlet 15 of the centrifugal fan 10 and exchanged heat with the refrigerant in the heat exchanger 40 into the room.
  • the casing 50 includes a drain pan 53 located below the heat exchanger 40. The drain pan 53 is arranged between the outlet 15 and the outlet 52 inside the casing 50.
  • the air guide member 30 is arranged on the outer peripheral side of the bell mouth 20 and on the inner peripheral side of the heat exchanger 40 in the radial direction.
  • the wind guide member 30 is connected to, for example, the second surface 20B of the bell mouth 20.
  • the wind guide member 30 is connected to, for example, the outer peripheral surface of the first part 21 and the back surface of the second part 22.
  • the wind guide member 30 has a front surface 30A facing the front side in the rotation direction and a rear surface 30B facing the rear side in the rotation direction.
  • the front surface 30A and the rear surface 30B are, for example, flat surfaces.
  • the front surface 30A of the wind guide member 30 includes a first end portion 31 located on the innermost peripheral side and a second end portion 32 located on the outermost peripheral side in the radial direction.
  • the first end 31 of the air guide member 30 is connected to, for example, the outer peripheral surface of the first 21 of the bell mouth 20.
  • the front surface 30A of the wind guide member 30 further includes an upper end portion 35 located closest to the centrifugal fan 10 and a lower end portion 36 located on the opposite side of the upper end portion 35 in the axial direction.
  • the lower end 36 of the wind guide member 30 is connected to, for example, the outer peripheral surface of the first part 21 of the bell mouth 20 and the back surface of the second part 22.
  • the first end portion 31 is arranged in front of the second end portion 32 in the rotation direction of the centrifugal fan 10.
  • the first angle ⁇ (see FIG. 3) formed by the front surface 30A of the wind guide member 30 with respect to the tangent line of the bell mouth 20 passing through the first end portion 31 is 0 degrees. It exceeds 90 degrees and is less than 90 degrees.
  • the first angle ⁇ is preferably 15 degrees or more and less than 75 degrees, and more preferably 30 degrees or more and less than 60 degrees.
  • the first angle ⁇ is the internal angle of the wind guide member 30.
  • the rear surface 30B of the wind guide member 30 includes a third end portion 33 located on the innermost peripheral side and a fourth end portion 34 located on the outermost peripheral side in the radial direction.
  • the third end portion 33 is arranged in front of the fourth end portion 34 in the rotation direction of the centrifugal fan 10.
  • the front surface 30A of the air guide member 30 is orthogonal to the first intake surface 41A of the heat exchanger 40 arranged at the position closest to the second end portion 32 of the air guide member 30. It extends in the direction of
  • the term “orthogonal” in the present specification is a concept including a configuration that can be regarded as substantially orthogonal in consideration of distortion and deviation due to variations in shape that occur in the manufacturing process.
  • the angle formed by the front surface 30A of the air guide member 30 with respect to the first intake surface 41A of the heat exchanger 40 is, for example, 85 degrees or more and 95 degrees or less.
  • the front surface 30A of the air guide member 30 is, for example, on the front side in the rotation direction of the first intake surface 41A arranged at the position closest to the second end 32 of the air guide member 30. It is located and extends parallel to the second intake surface 41B extending in the direction intersecting the first intake surface 41A.
  • parallel in the present specification is a concept including a configuration that can be regarded as substantially parallel in consideration of distortion and deviation due to variations in shape that occur in the manufacturing process.
  • the angle formed by the front surface 30A of the air guide member 30 with respect to the second intake surface 41B of the heat exchanger 40 is, for example, ⁇ 5 degrees or more and 5 degrees or less.
  • the air guide member 30 is arranged at a distance from a virtual line segment connecting the bell mouth 20 and the heat exchanger 40 at the shortest distance in the radial direction.
  • the air guide member 30 has a first virtual line segment VL1 that connects the inner peripheral end portion 23 of the bell mouth 20 and the first intake surface 41A of the heat exchanger 40 at the shortest distance in the radial direction.
  • the second virtual line segment VL2 which connects the inner peripheral end 23 of the bell mouth 20 and the second intake surface 41B of the heat exchanger 40 at the shortest distance in the radial direction, is arranged at a distance in the rotational direction.
  • the wind guide member 30 is arranged on the front side in the rotation direction of the first virtual line segment.
  • the rear surface 30B of the wind guide member 30 is arranged closer to the second intake surface 41B than the first virtual line segment VL1.
  • the front surface 30A of the wind guide member 30 is arranged behind the second virtual line segment VL2 in the rotational direction.
  • the wind guide member 30 is arranged closer to the first intake surface 41A than the second virtual line segment VL2. From a different point of view, the wind guide member 30 is arranged in the second vast space portion.
  • the front surface 30A of the wind guide member 30 extends along the above axial direction, for example.
  • the upper end portion 35 and the lower end portion 36 are provided so as to overlap each other, for example.
  • the wind guide member 30 is orthogonal to, for example, the flat portion of the second portion 22 of the bell mouth 20.
  • the wind guide member 30 is, for example, a plate-shaped member.
  • the front surface 30A and the rear surface 30B of the wind guide member 30 are parallel to each other.
  • the material constituting the air guide member 30 may be any material, but includes, for example, resin.
  • the wind guide member 30 may be solid or hollow.
  • the wind guide member 30 is configured as a separate body from, for example, the bell mouth 20. In this case, the wind guide member 30 may be fixed to the bell mouth 20 by any method, for example, by welding or bonding. Further, the wind guide member 30 may be configured integrally with the bell mouth 20. In this case, the bell mouth 20 and the air guide member 30 may be formed by injection molding or the like.
  • the air conditioner 100 is housed in the casing 50 provided with the intake port 51 and the outlet 52, and the air flowing into the casing 50 from the intake port 51 to the outlet 52.
  • a baffle member 30 arranged on the outer peripheral side of the bell mouth 20 is provided.
  • the wind guide member 30 has a front surface 30A located on the front side in the rotation direction.
  • the front surface 30A of the wind guide member 30 has a first end portion 31 located on the innermost peripheral side and a second end portion 32 located on the outermost peripheral side in the radial direction.
  • the first end portion 31 is arranged in front of the second end portion 32 in the rotation direction.
  • the first angle ⁇ is less than 90 degrees.
  • the airflow FL formed on the front surface 30A side of the air guiding member 30 is indicated by an arrow in FIG.
  • the first air flow (swirl flow) along the rotation direction and the heat exchanger 40 cannot flow into the heat exchanger 40 and are separated from the heat exchanger 40.
  • the airflow FL is formed by merging with the second airflow in the direction.
  • the first end 31 of the air guide member 30 is arranged in front of the second end 32 in the rotation direction of the centrifugal fan 10. Therefore, while the first airflow is blocked by the airflow guide member 30, the second airflow flows along the airflow guide member 30. Therefore, in the air conditioner 100, as compared with the conventional air conditioner described above, the airflow is less likely to be separated on the front surface 30A side of the second end 32 of the air guiding member 30, and the pressure loss due to the separation is increased. It is suppressed. As a result, the power consumption and noise of the fan motor of the air conditioner 100 are reduced as compared with the conventional air conditioner.
  • the driving efficiency of the centrifugal fan 10 is low.
  • the driving efficiency of the centrifugal fan 10 is higher than that in the air conditioner 100 in which the first airflow is not blocked.
  • the second airflow flows from the second end portion 32 toward the first end portion 31 on the front side of the air guide member 30 in the rotation direction, and then the centrifugal fan 10 is located on the front side of the first end portion 31. It can merge with the flow of gas blown out from the outlet 15 of the above and flow into the second intake surface 41B of the heat exchanger 40.
  • the drive efficiency and the heat exchange efficiency of the centrifugal fan 10 are simultaneously improved as compared with the conventional air conditioner.
  • the bell mouth 20 has an outer peripheral surface (outer peripheral surface of the first portion 21) facing the outer peripheral side in the radial direction.
  • the first end 31 of the air guide member 30 is connected to the outer peripheral surface of the bell mouth 20.
  • Such a wind guide member 30 more effectively blocks the first air flow as compared with the wind guide member 30 in which the first end portion 31 is arranged at a distance from the outer peripheral surface of the bell mouth 20.
  • the air conditioner 100 is housed in a casing 50 and further includes a heat exchanger 40 arranged between the centrifugal fan 10 and the outlet 52.
  • the heat exchanger 40 has an intake surface 41 facing the centrifugal fan 10.
  • the air guide member 30 is arranged inside the intake surface 41 in the radial direction.
  • the air guide member 30 extends in a direction orthogonal to the first intake surface 41A of the heat exchanger 40 arranged at a position closest to the second end portion 32 of the air guide member 30.
  • the wind guide member 30 since the first angle ⁇ becomes relatively large, the wind guide member 30 more effectively obstructs the first air flow as compared with the case where the first angle ⁇ is relatively small.
  • the flow velocity of the gas flowing through the annular space formed between the bell mouth 20 and the heat exchanger 40 changes according to the position in the rotation direction.
  • the flow velocity of the gas flowing through the narrow space is faster than the flow velocity of the gas flowing through the vast space. Therefore, when the wind guide member 30 is arranged so as to overlap the virtual line segment when viewed from the axial direction, that is, when the wind guide member 30 is arranged in the narrow space portion.
  • the pressure loss of the gas increases.
  • the air conditioner 30 is arranged with a virtual line segment connecting the bell mouth 20 and the heat exchanger 40 at the shortest distance in the radial direction and at intervals in the rotational direction.
  • the wind guide member 30 is not arranged in the narrow space portion, but is arranged in the wide space portion. Therefore, in the air conditioner 100, while the air guiding member 30 more effectively obstructs the first air flow, the increase in pressure loss due to the collision of the first air flow with the air guiding member 30 is suppressed. ing.
  • FIG. 6 is a side view of the air conditioner 101 according to the second embodiment as viewed from the first intake surface 41A side.
  • the air conditioner 101 according to the second embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the upper end 35 of the wind guide member 30 has a lower end in the rotation direction. It differs from the air conditioner 100 in that it is located behind 36.
  • parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown.
  • the front surface 30A of the air guide member 30 faces the centrifugal fan 10 side in the above axial direction.
  • the upper end 35 may be arranged behind the lower end 36 in the rotational direction. ..
  • the upper end 35 and the lower end 36 are provided so as to overlap when the air guide member 30 is viewed from the axial direction. You may be.
  • the wind guide member 30 may be provided, for example, so that the plate-shaped member is twisted.
  • FIG. 7 is a partial plan view of the air conditioner 102 according to the third embodiment.
  • the air conditioner 102 according to the third embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but when the air guide member 30 is viewed from the axial direction, the air conditioner member It differs from the air conditioner 100 in that the front surface 30A of the 30 is provided in a convex shape toward the front side in the rotation direction. In FIG. 7, parts other than the bell mouth 20 and the air guide member 30 are not shown.
  • the front surface 30A is configured as, for example, one curved surface.
  • the front surface 30A of the air conditioner 102 may have any configuration as long as it is provided in a convex shape toward the front side in the rotation direction, and may be configured as, for example, a bent surface.
  • the front surface 30A includes, for example, a plurality of planes having different inclinations with respect to the radial direction.
  • the air conditioner 102 may have the same configuration as the air conditioner 101 except for the above points.
  • the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction.
  • FIG. 8 is a partial plan view of the air conditioner 103 according to the fourth embodiment.
  • the air conditioner 103 according to the fourth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but has a first end 31 and a rear surface 30B of the front surface 30A in the rotation direction. It differs from the air conditioner 100 in that the distance between them is longer than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction.
  • parts other than the bell mouth 20 and the air guide member 30 are not shown.
  • the first angle ⁇ formed by the front surface 30A of the wind guide member 30 with respect to the tangent line of the bell mouth 20 passing through the first end portion 31 is the third end portion 33. It is smaller than the second angle ⁇ 2 formed by the rear surface 30B of the air guiding member 30 with respect to the tangent line of the bell mouth 20 passing through.
  • the second angle ⁇ 2 is the outer angle of the wind guide member 30. In other words, the width of the wind guide member 30 in the rotational direction gradually narrows from the inner peripheral side to the outer peripheral side in the radial direction.
  • the first angle ⁇ in the air conditioner 103 is smaller than the first angle ⁇ in the air conditioner 100 shown in FIG.
  • the first angle ⁇ is more than 0 degrees and less than the second angle ⁇ 2.
  • the second angle ⁇ 2 is, for example, more than 0 degrees and less than 90 degrees.
  • the air flow is less likely to be separated on the front surface 30A side of the air guiding member 30 than in the air conditioner 100. Therefore, the power consumption and noise of the fan motor of the air conditioner 103 are greatly reduced as compared with the conventional air conditioner.
  • the third end 33 of the rear surface 30B is arranged in front of the fourth end 34 in the rotation direction, but the present invention is not limited to this. ..
  • the third end 33 of the rear surface 30B is the fourth end 34 in the rotation direction. It may be arranged later than.
  • the second angle which is the outer angle of the wind guide member 30, may be an obtuse angle.
  • the air conditioner 103 may have the same configuration as the air conditioner 101 or the air conditioner 102, except for the above points.
  • the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction.
  • the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction.
  • FIG. 9 is a partial plan view of the air conditioner 104 according to the fifth embodiment.
  • the air conditioner 104 according to the fifth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the ratio L / M described later is 0.2 or more and 0.5 or less. In that respect, it differs from the air conditioner 100.
  • the value of the ratio L / M is not particularly limited in the air conditioner 100, but the ratio L / M is limited to 0.2 or more and 0.5 or less in the air conditioner 104.
  • parts other than the bell mouth 20, the air guide member 30, and the heat exchanger 40 are not shown.
  • the radial dimension of the air guide member 30 is L.
  • the dimension L is the radial distance between the first end portion 31 and the second end portion 32 of the air guide member 30.
  • M be the distance between the second surface 20B of the bell mouth 20 and the intake surface 41 on the virtual line segment connecting the second end 32 of the air guide member 30 and the rotation center axis O.
  • the ratio L / M of the dimension L to the distance M is 0.2 or more and 0.5 or less.
  • FIG. 10 is a graph showing the relationship between the ratio L / M and the power consumption of the fan motor.
  • the horizontal axis of FIG. 10 shows the ratio L / M
  • the vertical axis of FIG. 10 shows the power consumption of the fan motor.
  • the ratio L / M when the ratio L / M is less than 0.2, the power consumption increases as compared with the case where the ratio L / M is 0.2 or more. This is because when the ratio L / M is less than 0.2, the effect of suppressing the first flow (swirl flow) is smaller than when the ratio L / M is 0.2 or more. Is.
  • the ratio L / M exceeds 0.5, the power consumption increases as compared with the case where the ratio L / M is 0.5 or less.
  • the airflow guiding member 30 is closer to the heat exchanger 40 than when the ratio L / M is 0.5 or less. This is because the ventilation resistance to the airflow flowing into the 40 increases. Therefore, in the air conditioner 104, since the ratio L / M is 0.2 or more and 0.5 or less, it is compared with the air conditioner 100 in which the ratio L / M is less than 0.2 or more than 0.5. Therefore, the power consumption is reduced. Therefore, the power consumption and noise of the fan motor of the air conditioner 104 are greatly reduced as compared with the conventional air conditioner.
  • the air conditioner 104 may have the same configuration as the air conditioner 101, the air conditioner 102, or the air conditioner 103, except for the above points.
  • the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction.
  • the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction.
  • the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long.
  • FIG. 11 is a perspective view of the air conditioner 105 according to the sixth embodiment.
  • the air conditioner 105 according to the sixth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the air conditioner 105 guides air in a direction along the rotation axis. It differs from the air conditioner 100 in that the distance between the outer peripheral end of the member 30 and the second portion 22 of the bell mouth 20 becomes shorter from the inner peripheral side to the outer peripheral side in the radial direction.
  • parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown.
  • the distance between the second end 32 of the air guide member 30 and the centrifugal fan 10 and the distance between the fourth end 34 of the air guide member 30 and the centrifugal fan 10 are determined. In the above radial direction, it becomes longer from the inner peripheral side to the outer peripheral side.
  • the distance between the outer peripheral end of the air guide member 30 and the intake surface 41 (see FIG. 4) of the heat exchanger 40 is closer to the centrifugal fan 10 in the direction along the rotation axis. It gets longer as you go.
  • the distance between the second end 32 of the air guide member 30 and the first intake surface 41A (see FIG. 4) of the heat exchanger 40 and the fourth end 34 and the first of the air guide member 30 becomes longer toward the centrifugal fan 10 in the direction along the rotation axis.
  • the air conditioner 105 may have the same configuration as the air conditioner 101, the air conditioner 102, the air conditioner 103, or the air conditioner 104, except for the above points.
  • the upper end portion 35 of the wind guide member 30 may be arranged behind the lower end portion 36 in the rotation direction.
  • the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotational direction.
  • the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long.
  • the ratio L / M may be 0.2 or more and 0.5 or less.
  • FIG. 12 is a cross-sectional view of the air conditioner 106 according to the seventh embodiment.
  • the air conditioner 106 according to the seventh embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but has an upper end portion of the air guide member 30 in the direction along the rotation axis. It differs from the air conditioner 100 in that the distance between the 35 and the virtual surface VS1 in the direction along the rotation axis increases from the inner peripheral side to the outer peripheral side in the radial direction.
  • the distance between the upper end portion 35 of the wind guide member 30 and the second portion 22 of the bell mouth 20 in the direction along the rotation axis is from the inner peripheral side in the radial direction. It becomes shorter toward the outer circumference.
  • parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown.
  • the upper end 35 of the front surface 30A of the wind guide member 30 extends in the direction intersecting the virtual surface VS1.
  • the virtual surface VS2 that is orthogonal to the rotation center axis O and passes through the outer peripheral end portion of the upper end portion 35 of the wind guide member 30 in the radial direction, and the upper end portion of the wind guide member 30 that is orthogonal to the rotation center axis O.
  • a virtual surface VS3 that passes through the radial inner peripheral end of 35.
  • the distance in the direction along the rotation axis between the upper end 35 of the wind guide member 30 and the virtual surface VS1 is equal to or greater than the distance between the virtual surface VS1 and the virtual surface VS3, and the virtual surface VS1 and the virtual surface VS2.
  • the distance between the virtual surface VS1 and the virtual surface VS3 may be zero. Further, the virtual surface VS3 may be arranged on the main plate 12 side of the centrifugal fan 10 with respect to the virtual surface VS1.
  • the distance between the outer peripheral end of the air guide member 30 and the second portion 22 of the bell mouth 20 in the direction along the rotation axis is constant, for example, in the radial direction.
  • the air conditioner 106 may have the same configuration as the air conditioner 101, the air conditioner 102, the air conditioner 103, the air conditioner 104, or the air conditioner 105, except for the above points.
  • the upper end portion 35 of the wind guide member 30 may be arranged behind the lower end portion 36 in the rotation direction.
  • the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction.
  • the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long.
  • the ratio L / M may be 0.2 or more and 0.5 or less.
  • the distance between the outer peripheral end of the air guide member 30 and the second portion 22 of the bell mouth 20 is from the inner peripheral side to the outer peripheral side in the radial direction in the direction along the rotation axis. It may become shorter as it increases.
  • the air conditioners 100 to 106 may include a plurality of air guiding members 30.
  • FIG. 13 is a partial plan view showing an air conditioner 100 including a plurality of wind guide members 30.
  • each of the plurality of air guiding members 30 is provided so as to have rotational symmetry with respect to, for example, the rotation center axis O.
  • Each of the plurality of air guiding members 30 is provided so as to have rotational symmetry with respect to, for example, the rotation center axis O.
  • the intake surface 41 has a quadrangular shape when the heat exchanger 40 is viewed from the extending direction
  • the plurality of air guiding members 30 have rotation symmetry of, for example, four times.
  • each of the plurality of wind guide members 30 may have different configurations as long as they have the above-described configurations.
  • Each of the plurality of air guiding members 30 can be appropriately set according to, for example, the configuration of the heat exchanger 40.

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Abstract

An air-conditioning device (100) is provided with: a centrifugal fan (10); a bell mouth (20) that guides air to the centrifugal fan; and an air guide member (30) that is disposed, in the radial direction from the rotation axis of the centrifugal fan, further to the outer peripheral side than the bell mouth. The air guide member has a front face (30A) facing the front side in the rotation direction of the centrifugal fan. The front face of the air guide member has a first end (31) positioned closest to the inner peripheral side in the radial direction and a second end (32) positioned closest to the outer peripheral side in the radial direction. The first end is disposed further to the front side than the second end in the rotation direction.

Description

空気調和装置Air conditioner
　本発明は、空気調和装置に関する。 The present invention relates to an air conditioner.
　特開２０１６－０８０２０８号公報には、ベルマウスの上記空気吸込口側の空気吸込面とは反対の背面側に配置された風向板を備える空気調和機が開示されている。風向板は、遠心ファンの回転方向に対して垂直な方向に延在している。 Japanese Unexamined Patent Publication No. 2016-080208 discloses an air conditioner provided with a wind direction plate arranged on the back side opposite to the air suction surface on the air suction port side of the bell mouth. The wind direction plate extends in a direction perpendicular to the rotation direction of the centrifugal fan.
特開２０１６－０８０２０８号公報Japanese Unexamined Patent Publication No. 2016-080208
　しかしながら、上記空気調和機では、風向板が遠心ファンの回転方向に対して垂直な方向に延在しているため、風向板の外周端部で気流が剥離しやすく、剥離に伴い通風抵抗圧力損失が増大しやすい。その結果、上記空気調和機では、遠心ファンの駆動効率が比較的低くなる。 However, in the above air conditioner, since the wind direction plate extends in the direction perpendicular to the rotation direction of the centrifugal fan, the airflow tends to separate at the outer peripheral end of the wind direction plate, and the ventilation resistance pressure loss occurs due to the separation. Is likely to increase. As a result, in the above air conditioner, the driving efficiency of the centrifugal fan becomes relatively low.
　本発明の主たる目的は、上記空気調和機と比べて、遠心ファンの駆動効率が高い空気調和装置を提供することにある。 A main object of the present invention is to provide an air conditioner having a higher driving efficiency of a centrifugal fan as compared with the above air conditioner.
　本発明に係る空気調和装置は、遠心ファンと、空気を遠心ファンに導くベルマウスと、遠心ファンの回転軸に対する径方向において、ベルマウスよりも外周側に配置されている導風部材とを備える。導風部材は、遠心ファンの回転方向において前側を向いた前面を有している。導風部材の前面は、径方向において、最も内周側に位置する第１端部と、最も外周側に位置する第２端部とを有している。第１端部は、回転方向において、第２端部よりも前側に配置されている。 The air conditioner according to the present invention includes a centrifugal fan, a bell mouth that guides air to the centrifugal fan, and a wind guide member that is arranged on the outer peripheral side of the bell mouth in the radial direction with respect to the rotation axis of the centrifugal fan. .. The air guide member has a front surface facing forward in the rotation direction of the centrifugal fan. The front surface of the wind guide member has a first end portion located on the innermost peripheral side and a second end portion located on the outermost peripheral side in the radial direction. The first end portion is arranged in front of the second end portion in the rotation direction.
　本発明によれば、上記空気調和機と比べて、遠心ファンの駆動効率が高い空気調和装置を提供することができる。 According to the present invention, it is possible to provide an air conditioner having higher driving efficiency of a centrifugal fan as compared with the above air conditioner.
実施の形態１に係る空気調和装置の断面図である。It is sectional drawing of the air conditioner which concerns on Embodiment 1. FIG. 図１に示される空気調和装置の部分斜視図である。It is a partial perspective view of the air conditioner shown in FIG. 図１に示される空気調和装置の部分平面図である。It is a partial plan view of the air conditioner shown in FIG. 図３に示される部分平面図において遠心ファンの回転方向と導風部材の周囲の気流とを示す図である。It is a figure which shows the rotation direction of a centrifugal fan, and the air flow around a wind guide member in the partial plan view shown in FIG. 図１に示される空気調和装置を示す部分側面図である。It is a partial side view which shows the air conditioner shown in FIG. 実施の形態２に係る空気調和機を示す部分側面図である。It is a partial side view which shows the air conditioner which concerns on Embodiment 2. FIG. 実施の形態３に係る空気調和装置を示す部分平面図である。It is a partial plan view which shows the air conditioner which concerns on Embodiment 3. FIG. 実施の形態４に係る空気調和装置を示す部分平面図である。It is a partial plan view which shows the air conditioner which concerns on Embodiment 4. FIG. 実施の形態５に係る空気調和装置を示す部分平面図である。It is a partial plan view which shows the air conditioner which concerns on Embodiment 5. 図９に示される距離Ｍに対する距離Ｌの比率Ｌ／Ｍと、図９に示される空気調和装置の遠心ファンを回転させるための消費電力との関係を示すグラフである。It is a graph which shows the relationship between the ratio L / M of the distance L to the distance M shown in FIG. 9 and the power consumption for rotating the centrifugal fan of the air conditioner shown in FIG. 実施の形態６に係る空気調和装置を示す斜視図である。It is a perspective view which shows the air conditioner which concerns on Embodiment 6. 実施の形態７に係る空気調和装置を示す断面図である。It is sectional drawing which shows the air conditioner which concerns on Embodiment 7. 実施の形態１に係る空気調和装置の変形例を示す部分平面図である。It is a partial plan view which shows the modification of the air conditioner which concerns on Embodiment 1. FIG.
　以下、図面に基づいて本発明の実施の形態を説明する。なお、以下の図面において同一または相当する部分には同一の参照番号を付しその説明は繰返さない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings below, the same or corresponding parts are given the same reference numbers, and the explanations are not repeated.
　実施の形態１．
　図１～図４は、実施の形態１に係る空気調和装置１００を示す図である。図１および図２に示されるように、実施の形態１に係る空気調和装置１００は、遠心ファン１０と、ベルマウス２０と、導風部材３０と、熱交換器４０と、ケーシング５０と、モータ６０とを備える。遠心ファン１０は、モータ６０によって、回転中心軸Ｏを中心として回転される。以下、回転中心軸Ｏが延在する方向、回転中心軸Ｏに対する径方向、および遠心ファン１０の回転方向を、単に軸方向、径方向、および回転方向とよぶ。なお、図１において、遠心ファン１０については回転中心軸Ｏを通る断面の構成が示されているが、ベルマウス２０および導風部材３０については上記断面と平行な断面の構成が示されている。また、図２では、遠心ファン１０、ベルマウス２０、および導風部材３０以外の部品の図示が省略されている。図３では、ベルマウス２０および導風部材３０以外の部品の図示が省略されている。図４では、ベルマウス２０、導風部材３０、および熱交換器４０以外の部品の図示が省略されている。 Embodiment 1.
1 to 4 are diagrams showing the air conditioner 100 according to the first embodiment. As shown in FIGS. 1 and 2, the air conditioner 100 according to the first embodiment includes a centrifugal fan 10, a bell mouth 20, a wind guide member 30, a heat exchanger 40, a casing 50, and a motor. 60 and. The centrifugal fan 10 is rotated about the rotation center axis O by the motor 60. Hereinafter, the direction in which the rotation center axis O extends, the radial direction with respect to the rotation center axis O, and the rotation direction of the centrifugal fan 10 are simply referred to as an axial direction, a radial direction, and a rotation direction. In addition, in FIG. 1, the structure of the cross section of the centrifugal fan 10 passing through the rotation center axis O is shown, but the structure of the cross section of the bell mouth 20 and the air guiding member 30 is parallel to the above cross section. .. Further, in FIG. 2, illustration of parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 is omitted. In FIG. 3, parts other than the bell mouth 20 and the air guide member 30 are not shown. In FIG. 4, parts other than the bell mouth 20, the air guide member 30, and the heat exchanger 40 are not shown.
　遠心ファン１０は、回転中心軸Ｏに対して任意の位数の回転対称とされている。遠心ファン１０は、主板１１と、複数の翼１２と、側板１３とを含む。遠心ファン１０には、上記径方向の中央に配置されておりかつ上記軸方向に向いて開口している吸込口１４と、吸込口１４よりも上記径方向の外側に配置されておりかつ上記軸方向とは交差する方向に向いて開口する吹出口１５とが設けられている。 The centrifugal fan 10 is rotationally symmetric at an arbitrary order with respect to the rotation center axis O. The centrifugal fan 10 includes a main plate 11, a plurality of blades 12, and a side plate 13. The centrifugal fan 10 has a suction port 14 which is arranged in the center of the radial direction and is open toward the axial direction, and a suction port 14 which is arranged outside the suction port 14 in the radial direction and has the shaft. An air outlet 15 that opens in a direction intersecting with the direction is provided.
　主板１１は、モータ６０の回転軸に固定されている。主板１１は、上記径方向の中央に配置されておりかつ主板１１を側板１３側から視たときに吸込口１４に向かって凸状であるボス部を有している。主板１１は、例えば上記径方向においてボス部を囲むように設けられておりかつ上記回転軸に垂直な方向に延びている平坦部をさらに有している。 The main plate 11 is fixed to the rotating shaft of the motor 60. The main plate 11 is arranged at the center in the radial direction and has a boss portion that is convex toward the suction port 14 when the main plate 11 is viewed from the side plate 13 side. The main plate 11 further has, for example, a flat portion that is provided so as to surround the boss portion in the radial direction and extends in a direction perpendicular to the rotation axis.
　複数の翼１２の各々は、主板１１と側板１３との間に配置されている。各翼１２は、例えば主板１１の上記平坦部と側板１３との間を接続している。各翼１２は、上記回転方向において互いに間隔を隔てて配置されている。各翼１２の内周端部は、例えばボス部の外周端部よりも外周側に配置されている。 Each of the plurality of wings 12 is arranged between the main plate 11 and the side plate 13. Each wing 12 connects, for example, between the flat portion of the main plate 11 and the side plate 13. The wings 12 are arranged so as to be spaced apart from each other in the rotation direction. The inner peripheral end portion of each wing 12 is arranged on the outer peripheral side of the outer peripheral end portion of the boss portion, for example.
　側板１３は、上記回転方向に沿って環状に設けられている。側板１３は、遠心ファン１０との吸込口１４を形成するように設けられている内周端部１３ａと、主板１１との間に吹出口１５を形成するように設けられている外周端部１３ｂとを有している。内周端部１３ａは、上記軸方向において、外周端部１３ｂよりも主板１１の上記平坦部から離れた位置に配置されている。上記回転中心軸Ｏに沿った断面において、側板１３は、曲率中心が上記径方向において側板１３よりも外周側に配置された湾曲形状を有している。 The side plate 13 is provided in an annular shape along the rotation direction. The side plate 13 has an outer peripheral end portion 13b provided so as to form an air outlet 15 between the inner peripheral end portion 13a provided so as to form a suction port 14 with the centrifugal fan 10 and the main plate 11. And have. The inner peripheral end portion 13a is arranged at a position farther from the flat portion of the main plate 11 than the outer peripheral end portion 13b in the axial direction. In the cross section along the rotation center axis O, the side plate 13 has a curved shape in which the center of curvature is arranged on the outer peripheral side of the side plate 13 in the radial direction.
　遠心ファン１０を上記軸方向から視たときに、吸込口１４の平面形状は、回転中心軸Ｏを中心とする円形である。遠心ファン１０は、上記回転方向に並んで配置された複数の吹出口１５を有している。各吹出口１５は、上記軸方向において主板１１と側板１３との間に配置され、かつ上記回転方向において隣り合う２つの翼１２間に配置されている。 When the centrifugal fan 10 is viewed from the axial direction, the planar shape of the suction port 14 is a circle centered on the rotation center axis O. The centrifugal fan 10 has a plurality of outlets 15 arranged side by side in the rotation direction. Each air outlet 15 is arranged between the main plate 11 and the side plate 13 in the axial direction, and is arranged between two adjacent blades 12 in the rotational direction.
　ベルマウス２０は、空気調和装置１００が駆動されたときにケーシング５０の内部に流入した空気を遠心ファン１０に導くように設けられている。さらに、ベルマウス２０は、ケーシング５０の内部において、ケーシング５０に設けられた吸気口５１と遠心ファン１０の吸込口１４との間に位置する上流側空間と、遠心ファン１０の吹出口１５とケーシング５０に設けられた吹出口５２との間に位置する下流側空間とを仕切るように設けられている。 The bell mouth 20 is provided so as to guide the air flowing into the casing 50 to the centrifugal fan 10 when the air conditioner 100 is driven. Further, the bell mouth 20 has an upstream space located between the intake port 51 provided in the casing 50 and the suction port 14 of the centrifugal fan 10 inside the casing 50, and the outlet 15 of the centrifugal fan 10 and the casing. It is provided so as to partition the downstream space located between the air outlet 52 provided in the 50.
　ベルマウス２０は、上記軸方向において、遠心ファン１０の側板１３に対して主板１１とは反対側に配置されている。ベルマウス２０は、第１部２１および第２部２２を含む。第１部２１および第２部２２は、上記回転方向に沿って環状に設けられている。第１部２１は、第２部２２よりも内周側に配置されている。第１部２１は、ベルマウス２０の内周端部２３を成している内周端部と、第２部２２の内周端部と接続されている外周端部とを有している。ベルマウス２０の内周端部２３は、上記径方向において遠心ファン１０との吸込口１４よりも内周側に配置されており、かつ上記軸方向において吸込口１４よりも主板１１側に配置されている。第１部２１は、上記回転中心軸Ｏに沿った断面において回転中心軸Ｏを挟んで対向する２点間の距離が上記軸方向において遠心ファン１０側に向かうにつれて漸次短くなるように、設けられている。上記回転中心軸Ｏに沿った断面において、第１部２１は、曲率中心が上記径方向において第１部２１よりも外周側に配置された湾曲形状を有している。第２部２２は、第１部２１の上記外周端部と接続されている上記内周端部と、ケーシング５０と接続されている外周端部とを有している。第２部２２は、例えば上記径方向に沿って延びる平坦部を有している。 The bell mouth 20 is arranged on the side opposite to the main plate 11 with respect to the side plate 13 of the centrifugal fan 10 in the above axial direction. The bell mouth 20 includes a first part 21 and a second part 22. The first part 21 and the second part 22 are provided in an annular shape along the rotation direction. The first part 21 is arranged on the inner peripheral side of the second part 22. The first portion 21 has an inner peripheral end portion forming the inner peripheral end portion 23 of the bell mouth 20, and an outer peripheral end portion connected to the inner peripheral end portion of the second portion 22. The inner peripheral end portion 23 of the bell mouth 20 is arranged on the inner peripheral side of the suction port 14 with the centrifugal fan 10 in the radial direction, and is arranged on the main plate 11 side of the suction port 14 in the axial direction. ing. The first part 21 is provided so that the distance between two points facing each other across the rotation center axis O in the cross section along the rotation center axis O gradually becomes shorter toward the centrifugal fan 10 side in the axial direction. ing. In the cross section along the rotation center axis O, the first portion 21 has a curved shape in which the center of curvature is arranged on the outer peripheral side of the first portion 21 in the radial direction. The second portion 22 has the inner peripheral end portion connected to the outer peripheral end portion of the first portion 21, and the outer peripheral end portion connected to the casing 50. The second portion 22 has, for example, a flat portion extending along the radial direction.
　ベルマウス２０を上記軸方向から視たときに、ベルマウス２０の内周端部２３の平面形状は、回転中心軸Ｏを中心とする円形である。 When the bell mouth 20 is viewed from the above axial direction, the planar shape of the inner peripheral end portion 23 of the bell mouth 20 is a circle centered on the rotation center axis O.
　ベルマウス２０は、上記上流側空間に面している第１面２０Ａと、第１面２０Ａとは反対側に位置する第２面２０Ｂとを有している。第１部２１は、上記径方向において内周を向いた内周面と、上記径方向において外周を向いた外周面とを有している。第２部２２は、上記軸方向において吸気口５１側を向いた正面と、上記軸方向において遠心ファン１０側を向いた背面とを有している。第１面２０Ａは、第１部２１の内周面および第２部２２の正面から成る。第２面２０Ｂは、第１部２１の外周面および第２部２２の背面から成る。 The bell mouth 20 has a first surface 20A facing the upstream space and a second surface 20B located on the opposite side of the first surface 20A. The first part 21 has an inner peripheral surface facing the inner circumference in the radial direction and an outer peripheral surface facing the outer circumference in the radial direction. The second part 22 has a front surface facing the intake port 51 side in the axial direction and a back surface facing the centrifugal fan 10 side in the axial direction. The first surface 20A comprises an inner peripheral surface of the first part 21 and a front surface of the second part 22. The second surface 20B includes an outer peripheral surface of the first portion 21 and a back surface of the second portion 22.
　熱交換器４０は、上記径方向において遠心ファン１０の吹出口１５と対向するように配置されている。熱交換器４０は、遠心ファン１０の吹出口１５を囲むように配置されている。熱交換器４０は、遠心ファン１０側を向いた吸気面４１を有している。遠心ファン１０の吹出口１５から吹き出された気体は、熱交換器４０において、熱交換器４０の内部を流れる冷媒と熱交換する。 The heat exchanger 40 is arranged so as to face the outlet 15 of the centrifugal fan 10 in the radial direction. The heat exchanger 40 is arranged so as to surround the outlet 15 of the centrifugal fan 10. The heat exchanger 40 has an intake surface 41 facing the centrifugal fan 10. The gas blown out from the outlet 15 of the centrifugal fan 10 exchanges heat with the refrigerant flowing inside the heat exchanger 40 in the heat exchanger 40.
　熱交換器４０を上記軸方向から視たときに、熱交換器４０の吸気面４１の形状は、例えば略四角形状である。吸気面４１は、上記回転方向において並んで配置された第１吸気面４１Ａおよび第２吸気面４１Ｂを有している。第２吸気面４１Ｂは、第１吸気面４１Ａよりも上記回転方向において前側に配置されており、かつ第１吸気面４１Ａと交差する方向に延びている。ベルマウス２０の内周端部２３と熱交換器４０の吸気面４１との間の上記径方向の距離は、上記回転方向において変化する。言い換えると、ベルマウス２０の内周端部２３と熱交換器４０の吸気面４１との間に形成される環状空間は、上記径方向の幅が相対的に狭い狭小空間部と、上記径方向の幅が狭小空間部よりも広い広大空間部とを含む。上記狭小空間部と上記広大空間部とは、上記回転方向に連なっている。 When the heat exchanger 40 is viewed from the axial direction, the shape of the intake surface 41 of the heat exchanger 40 is, for example, a substantially square shape. The intake surface 41 has a first intake surface 41A and a second intake surface 41B arranged side by side in the rotation direction. The second intake surface 41B is arranged on the front side in the rotation direction with respect to the first intake surface 41A, and extends in a direction intersecting with the first intake surface 41A. The radial distance between the inner peripheral end 23 of the bell mouth 20 and the intake surface 41 of the heat exchanger 40 changes in the rotational direction. In other words, the annular space formed between the inner peripheral end portion 23 of the bell mouth 20 and the intake surface 41 of the heat exchanger 40 is a narrow space portion having a relatively narrow radial width and the radial direction. Includes a large space that is wider than a narrow space. The narrow space portion and the large space portion are connected in the rotation direction.
　ベルマウス２０の内周端部２３と第１吸気面４１Ａとの間には、第１狭小空間部と、第１および第２広大空間部とが形成されている。第１広大空間部は、第１狭小空間部よりも上記回転方向の後側に配置されている。第２広大空間部は、第１狭小空間部よりも上記回転方向の前側に配置されている。ベルマウス２０の内周端部２３と第２吸気面４１Ｂとの間には、第２狭小空間部と、第３および第４広大空間部とが形成されている。第３広大空間部は、第２広大空間部よりも上記回転方向の前側に配置されており、かつ第２狭小空間部よりも上記回転方向の後側に配置されている。第４広大空間部は、第２狭小空間部よりも上記回転方向の前側に配置されている。第１広大空間部、第１狭小空間部、第２広大空間部、第３広大空間部、第２狭小空間部、および第４広大空間部は、上記回転方向の後側から前側に向けて順に連なっている。 A first narrow space portion and first and second large space portions are formed between the inner peripheral end portion 23 of the bell mouth 20 and the first intake surface 41A. The first wide space portion is arranged behind the first narrow space portion in the rotation direction. The second wide space portion is arranged on the front side in the rotational direction with respect to the first narrow space portion. A second narrow space portion and a third and fourth wide space portion are formed between the inner peripheral end portion 23 of the bell mouth 20 and the second intake surface 41B. The third vast space portion is arranged on the front side in the rotation direction from the second vast space portion, and is arranged on the rear side in the rotation direction from the second narrow space portion. The fourth wide space portion is arranged on the front side in the rotation direction with respect to the second narrow space portion. The first vast space portion, the first narrow space portion, the second vast space portion, the third vast space portion, the second narrow space portion, and the fourth vast space portion are sequentially arranged from the rear side to the front side in the rotation direction. It is in a row.
　ケーシング５０は、遠心ファン１０、ベルマウス２０、導風部材３０および熱交換器４０を内部に収容している。ケーシング５０には、吸込口１４の下方に室内の空気を吸込口１４に取り込むための吸気口５１が設けられている。吸気口５１には、例えばグリルが取り付けられている。上記径方向において吸気口５１よりも外側には、遠心ファン１０の吹出口１５から吹出され、熱交換器４０において冷媒と熱交換された空気を室内に吹き出すための複数の吹出口５２が設けられている。ケーシング５０は、熱交換器４０の下方に配置されたドレインパン５３を含む。ドレインパン５３は、ケーシング５０の内部において、吹出口１５と吹出口５２との間に配置されている。 The casing 50 houses the centrifugal fan 10, the bell mouth 20, the air guide member 30, and the heat exchanger 40 inside. The casing 50 is provided with an intake port 51 below the suction port 14 for taking in indoor air into the suction port 14. For example, a grill is attached to the intake port 51. A plurality of outlets 52 are provided outside the intake port 51 in the radial direction to blow out the air blown out from the outlet 15 of the centrifugal fan 10 and exchanged heat with the refrigerant in the heat exchanger 40 into the room. ing. The casing 50 includes a drain pan 53 located below the heat exchanger 40. The drain pan 53 is arranged between the outlet 15 and the outlet 52 inside the casing 50.
　図１および図４に示されるように、導風部材３０は、上記径方向において、ベルマウス２０よりも外周側、かつ熱交換器４０よりも内周側に配置されている。導風部材３０は、例えばベルマウス２０の第２面２０Ｂに接続されている。導風部材３０は、例えば第１部２１の上記外周面および第２部２２の上記背面と接続されている。 As shown in FIGS. 1 and 4, the air guide member 30 is arranged on the outer peripheral side of the bell mouth 20 and on the inner peripheral side of the heat exchanger 40 in the radial direction. The wind guide member 30 is connected to, for example, the second surface 20B of the bell mouth 20. The wind guide member 30 is connected to, for example, the outer peripheral surface of the first part 21 and the back surface of the second part 22.
　図２および図３に示されるように、導風部材３０は、上記回転方向において前側を向いた前面３０Ａと、上記回転方向において後側を向いた後面３０Ｂとを有している。前面３０Ａおよび後面３０Ｂは、例えば平面である。 As shown in FIGS. 2 and 3, the wind guide member 30 has a front surface 30A facing the front side in the rotation direction and a rear surface 30B facing the rear side in the rotation direction. The front surface 30A and the rear surface 30B are, for example, flat surfaces.
　導風部材３０の前面３０Ａは、上記径方向において、最も内周側に位置する第１端部３１と、最も外周側に位置する第２端部３２とを含む。導風部材３０の第１端部３１は、例えばベルマウス２０の第１部２１の上記外周面と接続されている。 The front surface 30A of the wind guide member 30 includes a first end portion 31 located on the innermost peripheral side and a second end portion 32 located on the outermost peripheral side in the radial direction. The first end 31 of the air guide member 30 is connected to, for example, the outer peripheral surface of the first 21 of the bell mouth 20.
　導風部材３０の前面３０Ａは、上記軸方向において、遠心ファン１０に最も近い位置にある上方端部３５と、上方端部３５とは反対側に位置する下方端部３６とをさらに含む。導風部材３０の下方端部３６は、例えばベルマウス２０の第１部２１の上記外周面および第２部２２の上記背面と接続されている。 The front surface 30A of the wind guide member 30 further includes an upper end portion 35 located closest to the centrifugal fan 10 and a lower end portion 36 located on the opposite side of the upper end portion 35 in the axial direction. The lower end 36 of the wind guide member 30 is connected to, for example, the outer peripheral surface of the first part 21 of the bell mouth 20 and the back surface of the second part 22.
　図３に示されるように、第１端部３１は、遠心ファン１０の回転方向において、第２端部３２よりも前側に配置されている。ベルマウス２０を上記軸方向から視たときに、第１端部３１を通るベルマウス２０の接線に対し、導風部材３０の前面３０Ａが成す第１角度θ（図３参照）は、０度超え９０度未満である。上記第１角度θは、好ましくは１５度以上７５度未満であり、より好ましくは３０度以上６０度未満である。なお、第１角度θは、導風部材３０の内角である。 As shown in FIG. 3, the first end portion 31 is arranged in front of the second end portion 32 in the rotation direction of the centrifugal fan 10. When the bell mouth 20 is viewed from the axial direction, the first angle θ (see FIG. 3) formed by the front surface 30A of the wind guide member 30 with respect to the tangent line of the bell mouth 20 passing through the first end portion 31 is 0 degrees. It exceeds 90 degrees and is less than 90 degrees. The first angle θ is preferably 15 degrees or more and less than 75 degrees, and more preferably 30 degrees or more and less than 60 degrees. The first angle θ is the internal angle of the wind guide member 30.
　導風部材３０の後面３０Ｂは、上記径方向において、最も内周側に位置する第３端部３３と、最も外周側に位置する第４端部３４とを含む。第３端部３３は、遠心ファン１０の回転方向において、第４端部３４よりも前側に配置されている。 The rear surface 30B of the wind guide member 30 includes a third end portion 33 located on the innermost peripheral side and a fourth end portion 34 located on the outermost peripheral side in the radial direction. The third end portion 33 is arranged in front of the fourth end portion 34 in the rotation direction of the centrifugal fan 10.
　図３に示されるように、導風部材３０の前面３０Ａは、当該導風部材３０の第２端部３２に最も近い位置に配置された熱交換器４０の第１吸気面４１Ａに対して直交する方向に延在している。なお、本明細書における直交とは、製造工程上で発生する形状のばらつきなどによる歪みおよびずれを考慮して、実質的に直交と見なせる構成を含む概念である。導風部材３０の前面３０Ａが熱交換器４０の第１吸気面４１Ａに対して成す角度は、例えば８５度以上９５度以下である。 As shown in FIG. 3, the front surface 30A of the air guide member 30 is orthogonal to the first intake surface 41A of the heat exchanger 40 arranged at the position closest to the second end portion 32 of the air guide member 30. It extends in the direction of In addition, the term “orthogonal” in the present specification is a concept including a configuration that can be regarded as substantially orthogonal in consideration of distortion and deviation due to variations in shape that occur in the manufacturing process. The angle formed by the front surface 30A of the air guide member 30 with respect to the first intake surface 41A of the heat exchanger 40 is, for example, 85 degrees or more and 95 degrees or less.
　図３に示されるように、導風部材３０の前面３０Ａは、例えば当該導風部材３０の第２端部３２に最も近い位置に配置された第１吸気面４１Ａよりも上記回転方向の前側に位置し、かつ第１吸気面４１Ａと交差する方向に延びる第２吸気面４１Ｂと平行に延在している。なお、本明細書における平行とは、製造工程上で発生する形状のばらつきなどによる歪みおよびずれを考慮して、実質的に平行と見なせる構成を含む概念である。導風部材３０の前面３０Ａが熱交換器４０の第２吸気面４１Ｂに対して成す角度は、例えば－５度以上５度以下である。 As shown in FIG. 3, the front surface 30A of the air guide member 30 is, for example, on the front side in the rotation direction of the first intake surface 41A arranged at the position closest to the second end 32 of the air guide member 30. It is located and extends parallel to the second intake surface 41B extending in the direction intersecting the first intake surface 41A. In addition, the term "parallel" in the present specification is a concept including a configuration that can be regarded as substantially parallel in consideration of distortion and deviation due to variations in shape that occur in the manufacturing process. The angle formed by the front surface 30A of the air guide member 30 with respect to the second intake surface 41B of the heat exchanger 40 is, for example, −5 degrees or more and 5 degrees or less.
　図３に示されるように、導風部材３０は、上記径方向においてベルマウス２０と熱交換器４０との間を最短距離で結ぶ仮想線分と間隔を隔てて配置されている。具体的には、導風部材３０は、上記径方向においてベルマウス２０の内周端部２３と熱交換器４０の第１吸気面４１Ａとの間を最短距離で結ぶ第１仮想線分ＶＬ１、および上記径方向においてベルマウス２０の内周端部２３と熱交換器４０の第２吸気面４１Ｂとの間を最短距離で結ぶ第２仮想線分ＶＬ２と、上記回転方向において間隔を隔てて配置されている。導風部材３０は、上記第１仮想線分よりも上記回転方向の前側に配置されている。言い換えると、導風部材３０の後面３０Ｂは、上記第１仮想線分ＶＬ１よりも、第２吸気面４１Ｂ側に配置されている。導風部材３０の前面３０Ａは、上記第２仮想線分ＶＬ２よりも上記回転方向の後側に配置されている。言い換えると、導風部材３０は、上記第２仮想線分ＶＬ２よりも、第１吸気面４１Ａ側に配置されている。異なる観点から言えば、導風部材３０は、上記第２広大空間部内に配置されている。 As shown in FIG. 3, the air guide member 30 is arranged at a distance from a virtual line segment connecting the bell mouth 20 and the heat exchanger 40 at the shortest distance in the radial direction. Specifically, the air guide member 30 has a first virtual line segment VL1 that connects the inner peripheral end portion 23 of the bell mouth 20 and the first intake surface 41A of the heat exchanger 40 at the shortest distance in the radial direction. The second virtual line segment VL2, which connects the inner peripheral end 23 of the bell mouth 20 and the second intake surface 41B of the heat exchanger 40 at the shortest distance in the radial direction, is arranged at a distance in the rotational direction. Has been done. The wind guide member 30 is arranged on the front side in the rotation direction of the first virtual line segment. In other words, the rear surface 30B of the wind guide member 30 is arranged closer to the second intake surface 41B than the first virtual line segment VL1. The front surface 30A of the wind guide member 30 is arranged behind the second virtual line segment VL2 in the rotational direction. In other words, the wind guide member 30 is arranged closer to the first intake surface 41A than the second virtual line segment VL2. From a different point of view, the wind guide member 30 is arranged in the second vast space portion.
　導風部材３０の前面３０Ａは、例えば上記軸方向に沿って延びている。導風部材３０を上記軸方向から視たときに、上方端部３５および下方端部３６は、例えば重なるように設けられている。導風部材３０は、例えばベルマウス２０の第２部２２の上記平坦部と直交している。導風部材３０は、例えば板状部材である。導風部材３０の前面３０Ａと後面３０Ｂとは、平行である。 The front surface 30A of the wind guide member 30 extends along the above axial direction, for example. When the wind guide member 30 is viewed from the axial direction, the upper end portion 35 and the lower end portion 36 are provided so as to overlap each other, for example. The wind guide member 30 is orthogonal to, for example, the flat portion of the second portion 22 of the bell mouth 20. The wind guide member 30 is, for example, a plate-shaped member. The front surface 30A and the rear surface 30B of the wind guide member 30 are parallel to each other.
　図１および図５に示されるように、上記回転中心軸Ｏと直交しかつ遠心ファン１０の側板１３の内周端部１３ａを通る仮想面ＶＳ１を考える。導風部材３０の上方端部３５と仮想面ＶＳ１との間の上記回転軸に沿った方向の距離Ｋは、上記径方向における上方端部３５の位置によらず一定である。なお、導風部材３０の前面３０Ａの上方端部３５は、上記回転中心軸Ｏと直交する面に沿って延びている。導風部材３０の上方端部３５とベルマウス２０の第２部分２２との間の上記回転軸に沿った方向の距離は、上記径方向における上方端部３５の位置によらず一定である。 As shown in FIGS. 1 and 5, consider a virtual surface VS1 that is orthogonal to the rotation center axis O and passes through the inner peripheral end portion 13a of the side plate 13 of the centrifugal fan 10. The distance K between the upper end 35 of the wind guide member 30 and the virtual surface VS1 in the direction along the rotation axis is constant regardless of the position of the upper end 35 in the radial direction. The upper end 35 of the front surface 30A of the air guide member 30 extends along a plane orthogonal to the rotation center axis O. The distance between the upper end portion 35 of the wind guide member 30 and the second portion 22 of the bell mouth 20 in the direction along the rotation axis is constant regardless of the position of the upper end portion 35 in the radial direction.
　導風部材３０を構成する材料は、任意の材料であればよいが、例えば樹脂を含む。導風部材３０は、中実であってもよいし、中空であってもよい。導風部材３０は、例えばベルマウス２０と別体として構成されている。この場合、導風部材３０は、ベルマウス２０と任意の方法により固定されていればよく、例えば溶接または接着されている。また、導風部材３０は、ベルマウス２０と一体として構成されていてもよい。この場合、ベルマウス２０および導風部材３０は、射出成型などによって形成されていてもよい。 The material constituting the air guide member 30 may be any material, but includes, for example, resin. The wind guide member 30 may be solid or hollow. The wind guide member 30 is configured as a separate body from, for example, the bell mouth 20. In this case, the wind guide member 30 may be fixed to the bell mouth 20 by any method, for example, by welding or bonding. Further, the wind guide member 30 may be configured integrally with the bell mouth 20. In this case, the bell mouth 20 and the air guide member 30 may be formed by injection molding or the like.
　＜作用効果＞
　上述した従来の空気調和機では、風向板が遠心ファンの回転方向に対して垂直な方向に延在しているため、風向板の外周端部で気流が剥離しやすく、剥離に伴い圧力損失が増大しやすい。その結果、上記従来の空気調和機では、遠心ファンの駆動効率が比較的低くなり、遠心ファンを駆動するためのファンモータの消費電力およびファンモータの騒音が大きくなる。 <Effect>
In the conventional air conditioner described above, since the wind direction plate extends in the direction perpendicular to the rotation direction of the centrifugal fan, the airflow tends to separate at the outer peripheral end of the wind direction plate, and pressure loss occurs due to the separation. Easy to grow. As a result, in the conventional air conditioner, the driving efficiency of the centrifugal fan becomes relatively low, and the power consumption of the fan motor for driving the centrifugal fan and the noise of the fan motor become large.
　これに対し、空気調和装置１００は、吸気口５１および吹出口５２が設けられたケーシング５０と、ケーシング５０内に収容されており、吸気口５１からケーシング５０内に流入した空気を吹出口５２に送り出す遠心ファン１０と、ケーシング５０内に収容されており、吸気口５１からケーシング５０内に流入した空気を遠心ファン１０に導くベルマウス２０と、ケーシング５０内に収容されており、上記径方向において、ベルマウス２０よりも外周側に配置されている導風部材３０とを備える。導風部材３０は、上記回転方向において前側に位置する前面３０Ａを有している。導風部材３０の前面３０Ａは、上記径方向において、最も内周側に位置する第１端部３１と、最も外周側に位置する第２端部３２とを有している。第１端部３１は、上記回転方向において、第２端部３２よりも前側に配置されている。言い換えると、空気調和装置１００では、上記第１角度θが９０度未満である。 On the other hand, the air conditioner 100 is housed in the casing 50 provided with the intake port 51 and the outlet 52, and the air flowing into the casing 50 from the intake port 51 to the outlet 52. The centrifuge fan 10 to be sent out, the bell mouth 20 housed in the casing 50 and guiding the air flowing into the casing 50 from the intake port 51 to the centrifugal fan 10, and the bell mouth 20 housed in the casing 50 in the above radial direction. , A baffle member 30 arranged on the outer peripheral side of the bell mouth 20 is provided. The wind guide member 30 has a front surface 30A located on the front side in the rotation direction. The front surface 30A of the wind guide member 30 has a first end portion 31 located on the innermost peripheral side and a second end portion 32 located on the outermost peripheral side in the radial direction. The first end portion 31 is arranged in front of the second end portion 32 in the rotation direction. In other words, in the air conditioner 100, the first angle θ is less than 90 degrees.
　空気調和装置１００において、導風部材３０の前面３０Ａ側に形成される気流ＦＬは、図４中において矢印で示される。図４に示されるように、導風部材３０の前面３０Ａ側には、上記回転方向に沿った第１の気流（旋回流）と、熱交換器４０に流入できずに熱交換器４０から離れる方向への第２の気流とが合流することにより、気流ＦＬが形成される。 In the air conditioner 100, the airflow FL formed on the front surface 30A side of the air guiding member 30 is indicated by an arrow in FIG. As shown in FIG. 4, on the front surface 30A side of the air guide member 30, the first air flow (swirl flow) along the rotation direction and the heat exchanger 40 cannot flow into the heat exchanger 40 and are separated from the heat exchanger 40. The airflow FL is formed by merging with the second airflow in the direction.
　導風部材３０の第１端部３１は、遠心ファン１０の回転方向において第２端部３２よりも前側に配置されている。そのため、上記第１の気流は導風部材３０によって妨げられる一方で、上記第２の気流は導風部材３０に沿って流れる。そのため、空気調和装置１００では、上述した従来の空気調和機と比べて、導風部材３０の第２端部３２の前面３０Ａ側での気流の剥離が生じにくく、剥離に伴う圧力損失の増大が抑制されている。その結果、空気調和装置１００のファンモータの消費電力および騒音は従来の空気調和機と比べて低減されている。 The first end 31 of the air guide member 30 is arranged in front of the second end 32 in the rotation direction of the centrifugal fan 10. Therefore, while the first airflow is blocked by the airflow guide member 30, the second airflow flows along the airflow guide member 30. Therefore, in the air conditioner 100, as compared with the conventional air conditioner described above, the airflow is less likely to be separated on the front surface 30A side of the second end 32 of the air guiding member 30, and the pressure loss due to the separation is increased. It is suppressed. As a result, the power consumption and noise of the fan motor of the air conditioner 100 are reduced as compared with the conventional air conditioner.
　また、導風部材３０が設けられておらず上記第１の気流が妨げられない空気調和装置では、モータから遠心ファンに与えられた回転エネルギーの一部が第１の気流の運動エネルギーとして消費されるため、遠心ファンの駆動効率は低い。これに対し、上記第１の気流が導風部材３０によって妨げられる空気調和装置１００では、上記第１の気流が妨げられない空気調和装置と比べて、遠心ファン１０の駆動効率が高い。 Further, in the air conditioner in which the air guiding member 30 is not provided and the first airflow is not obstructed, a part of the rotational energy given to the centrifugal fan from the motor is consumed as the kinetic energy of the first airflow. Therefore, the driving efficiency of the centrifugal fan is low. On the other hand, in the air conditioner 100 in which the first airflow is blocked by the air guiding member 30, the driving efficiency of the centrifugal fan 10 is higher than that in the air conditioner 100 in which the first airflow is not blocked.
　なお、上記第２の気流は、上記回転方向において導風部材３０の前側を第２端部３２から第１端部３１に向けて流れたのち、第１端部３１よりも前側において遠心ファン１０の吹出口１５から吹き出された気体の流れと合流して、熱交換器４０の第２吸気面４１Ｂに流入し得る。その結果、空気調和装置１００では、上記従来の空気調和機と比べて、遠心ファン１０の駆動効率および熱交換効率が同時に高められている。 The second airflow flows from the second end portion 32 toward the first end portion 31 on the front side of the air guide member 30 in the rotation direction, and then the centrifugal fan 10 is located on the front side of the first end portion 31. It can merge with the flow of gas blown out from the outlet 15 of the above and flow into the second intake surface 41B of the heat exchanger 40. As a result, in the air conditioner 100, the drive efficiency and the heat exchange efficiency of the centrifugal fan 10 are simultaneously improved as compared with the conventional air conditioner.
　空気調和装置１００において、ベルマウス２０は、上記径方向において外周側を向いた外周面（第１部２１の外周面）を有している。導風部材３０の第１端部３１は、ベルマウス２０の外周面と接続されている。 In the air conditioner 100, the bell mouth 20 has an outer peripheral surface (outer peripheral surface of the first portion 21) facing the outer peripheral side in the radial direction. The first end 31 of the air guide member 30 is connected to the outer peripheral surface of the bell mouth 20.
　このような導風部材３０は、第１端部３１がベルマウス２０の外周面と間隔を隔てて配置されている導風部材３０と比べて、上記第１の気流をより効果的に妨げる。 Such a wind guide member 30 more effectively blocks the first air flow as compared with the wind guide member 30 in which the first end portion 31 is arranged at a distance from the outer peripheral surface of the bell mouth 20.
　空気調和装置１００は、ケーシング５０内に収容されており、遠心ファン１０と吹出口５２との間に配置された熱交換器４０をさらに備える。熱交換器４０は、遠心ファン１０側を向いた吸気面４１を有している。導風部材３０は、上記径方向において吸気面４１よりも内側に配置されている。導風部材３０は、当該導風部材３０の第２端部３２に最も近い位置に配置された熱交換器４０の第１吸気面４１Ａに対して直交する方向に延在している。 The air conditioner 100 is housed in a casing 50 and further includes a heat exchanger 40 arranged between the centrifugal fan 10 and the outlet 52. The heat exchanger 40 has an intake surface 41 facing the centrifugal fan 10. The air guide member 30 is arranged inside the intake surface 41 in the radial direction. The air guide member 30 extends in a direction orthogonal to the first intake surface 41A of the heat exchanger 40 arranged at a position closest to the second end portion 32 of the air guide member 30.
　このようにすれば上記第１角度θが比較的大きくなるため、上記第１角度θが比較的小さい場合と比べて、導風部材３０が上記第１の気流をより効果的に妨げる。 In this way, since the first angle θ becomes relatively large, the wind guide member 30 more effectively obstructs the first air flow as compared with the case where the first angle θ is relatively small.
　なお、空気調和装置１００では、ベルマウス２０の熱交換器４０との間に形成される環状空間を流れる気体の流速は、上記回転方向の位置に応じて変化する。上記狭小空間部を流れる気体の流速は、上記広大空間部を流れる気体の流速よりも速くなる。そのため、導風部材３０を上記軸方向から視たときに導風部材３０が上記仮想線分と重なるように配置されている場合、すなわち導風部材３０が狭小空間部に配置されている場合、狭小空間部を流れる比較的高速の気体が導風部材３０に衝突することにより、当該気体の圧力損失が高くなる。 In the air conditioner 100, the flow velocity of the gas flowing through the annular space formed between the bell mouth 20 and the heat exchanger 40 changes according to the position in the rotation direction. The flow velocity of the gas flowing through the narrow space is faster than the flow velocity of the gas flowing through the vast space. Therefore, when the wind guide member 30 is arranged so as to overlap the virtual line segment when viewed from the axial direction, that is, when the wind guide member 30 is arranged in the narrow space portion. When a relatively high-speed gas flowing through the narrow space collides with the air guide member 30, the pressure loss of the gas increases.
　これに対し、空気調和装置１００では、導風部材３０は、上記径方向においてベルマウス２０と熱交換器４０との間を最短距離で結ぶ仮想線分と、上記回転方向において間隔を隔てて配置されている。すなわち、導風部材３０は、上記狭小空間部に配置されておらず、上記広大空間部に配置されている。そのため、空気調和装置１００では、導風部材３０が上記第１の気流をより効果的に妨げながらも、上記第１の気流が導風部材３０に衝突することに伴う圧力損失の増大が抑制されている。 On the other hand, in the air conditioner 100, the air conditioner 30 is arranged with a virtual line segment connecting the bell mouth 20 and the heat exchanger 40 at the shortest distance in the radial direction and at intervals in the rotational direction. Has been done. That is, the wind guide member 30 is not arranged in the narrow space portion, but is arranged in the wide space portion. Therefore, in the air conditioner 100, while the air guiding member 30 more effectively obstructs the first air flow, the increase in pressure loss due to the collision of the first air flow with the air guiding member 30 is suppressed. ing.
　実施の形態２．
　図６は、実施の形態２に係る空気調和装置１０１を第１吸気面４１Ａ側から視た側面図である。実施の形態２に係る空気調和装置１０１は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、導風部材３０の上方端部３５が上記回転方向において下方端部３６よりも後側に配置されている点で、空気調和装置１００とは異なる。なお、図６では、遠心ファン１０、ベルマウス２０、および導風部材３０以外の部品の図示が省略されている。導風部材３０の前面３０Ａは、上記軸方向において、遠心ファン１０側に向いている。 Embodiment 2.
FIG. 6 is a side view of the air conditioner 101 according to the second embodiment as viewed from the first intake surface 41A side. The air conditioner 101 according to the second embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the upper end 35 of the wind guide member 30 has a lower end in the rotation direction. It differs from the air conditioner 100 in that it is located behind 36. In FIG. 6, parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown. The front surface 30A of the air guide member 30 faces the centrifugal fan 10 side in the above axial direction.
　このような空気調和装置１０１では、空気調和装置１００と比べて、導風部材３０の前面３０Ａ側での気流の剥離がさらに生じにくい。そのため、空気調和装置１０１のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 In such an air conditioner 101, as compared with the air conditioner 100, the separation of the airflow on the front surface 30A side of the air guiding member 30 is more likely to occur. Therefore, the power consumption and noise of the fan motor of the air conditioner 101 are greatly reduced as compared with the conventional air conditioner.
　空気調和装置１０１では、少なくとも上記径方向において外周側に位置する導風部材３０の外周端部において、上方端部３５が上記回転方向において下方端部３６よりも後側に配置されていればよい。上記径方向において内周側に位置する導風部材３０の内周端部においては、導風部材３０を上記軸方向から視たときに上方端部３５および下方端部３６が重なるように設けられていてもよい。導風部材３０は、例えば板状部材がねじれたように設けられていてもよい。 In the air conditioner 101, at least at the outer peripheral end of the air guiding member 30 located on the outer peripheral side in the radial direction, the upper end 35 may be arranged behind the lower end 36 in the rotational direction. .. At the inner peripheral end of the air guide member 30 located on the inner peripheral side in the radial direction, the upper end 35 and the lower end 36 are provided so as to overlap when the air guide member 30 is viewed from the axial direction. You may be. The wind guide member 30 may be provided, for example, so that the plate-shaped member is twisted.
　実施の形態３．
　図７は、実施の形態３に係る空気調和装置１０２の部分平面図である。実施の形態３に係る空気調和装置１０２は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、導風部材３０を上記軸方向から視たときに、導風部材３０の前面３０Ａが上記回転方向の前側に向かって凸状に設けられている点で、空気調和装置１００とは異なる。なお、図７では、ベルマウス２０および導風部材３０以外の部品の図示が省略されている。 Embodiment 3.
FIG. 7 is a partial plan view of the air conditioner 102 according to the third embodiment. The air conditioner 102 according to the third embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but when the air guide member 30 is viewed from the axial direction, the air conditioner member It differs from the air conditioner 100 in that the front surface 30A of the 30 is provided in a convex shape toward the front side in the rotation direction. In FIG. 7, parts other than the bell mouth 20 and the air guide member 30 are not shown.
　前面３０Ａは、例えば１つの曲面として構成されている。なお、空気調和装置１０２の前面３０Ａは、上記回転方向の前側に向かって凸状に設けられている限りにおいて任意の構成を備えていればよく、例えば屈曲面として構成されていてもよい。この場合、前面３０Ａは、例えば上記径方向に対する傾きが互いに異なる複数の平面を含む。 The front surface 30A is configured as, for example, one curved surface. The front surface 30A of the air conditioner 102 may have any configuration as long as it is provided in a convex shape toward the front side in the rotation direction, and may be configured as, for example, a bent surface. In this case, the front surface 30A includes, for example, a plurality of planes having different inclinations with respect to the radial direction.
　このような空気調和装置１０２では、空気調和装置１００と比べて、導風部材３０の前面３０Ａ側での気流の剥離がさらに生じにくい。そのため、空気調和装置１０２のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 In such an air conditioner 102, as compared with the air conditioner 100, the separation of the airflow on the front surface 30A side of the air guiding member 30 is more likely to occur. Therefore, the power consumption and noise of the fan motor of the air conditioner 102 are greatly reduced as compared with the conventional air conditioner.
　なお、空気調和装置１０２は、上記点を除き、空気調和装置１０１と同様の構成を備えていてもよい。空気調和装置１０２において、導風部材３０の上方端部３５は、上記回転方向において下方端部３６よりも後側に配置されていてもよい。 The air conditioner 102 may have the same configuration as the air conditioner 101 except for the above points. In the air conditioner 102, the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction.
　実施の形態４．
　図８は、実施の形態４に係る空気調和装置１０３の部分平面図である。実施の形態４に係る空気調和装置１０３は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、上記回転方向における前面３０Ａの第１端部３１と後面３０Ｂとの間の距離が、上記回転方向における前面３０Ａの第２端部３２と後面３０Ｂとの間の距離よりも長い点で、空気調和装置１００とは異なる。なお、図８では、ベルマウス２０および導風部材３０以外の部品の図示が省略されている。 Embodiment 4.
FIG. 8 is a partial plan view of the air conditioner 103 according to the fourth embodiment. The air conditioner 103 according to the fourth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but has a first end 31 and a rear surface 30B of the front surface 30A in the rotation direction. It differs from the air conditioner 100 in that the distance between them is longer than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. In FIG. 8, parts other than the bell mouth 20 and the air guide member 30 are not shown.
　ベルマウス２０を上記軸方向から視たときに、第１端部３１を通るベルマウス２０の接線に対して導風部材３０の前面３０Ａが成す上記第１角度θは、第３端部３３を通るベルマウス２０の接線に対して導風部材３０の後面３０Ｂが成す第２角度θ２よりも、小さい。なお、第２角度θ２は、導風部材３０の外角である。言い換えると、上記回転方向における導風部材３０の幅は、上記径方向において内周側から外周側に向かうにつれて漸次狭くなっている。 When the bell mouth 20 is viewed from the axial direction, the first angle θ formed by the front surface 30A of the wind guide member 30 with respect to the tangent line of the bell mouth 20 passing through the first end portion 31 is the third end portion 33. It is smaller than the second angle θ2 formed by the rear surface 30B of the air guiding member 30 with respect to the tangent line of the bell mouth 20 passing through. The second angle θ2 is the outer angle of the wind guide member 30. In other words, the width of the wind guide member 30 in the rotational direction gradually narrows from the inner peripheral side to the outer peripheral side in the radial direction.
　空気調和装置１０３における第１角度θは、図３に示される空気調和装置１００における第１角度θよりも小さい。第１角度θは、０度超え第２角度θ２未満である。第２角度θ２は、例えば０度超え９０度未満である。 The first angle θ in the air conditioner 103 is smaller than the first angle θ in the air conditioner 100 shown in FIG. The first angle θ is more than 0 degrees and less than the second angle θ2. The second angle θ2 is, for example, more than 0 degrees and less than 90 degrees.
　このような空気調和装置１０３では、空気調和装置１００と比べて、導風部材３０の前面３０Ａ側において気流の剥離がさらに生じにくい。そのため、空気調和装置１０３のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 In such an air conditioner 103, the air flow is less likely to be separated on the front surface 30A side of the air guiding member 30 than in the air conditioner 100. Therefore, the power consumption and noise of the fan motor of the air conditioner 103 are greatly reduced as compared with the conventional air conditioner.
　なお、図８に示される空気調和装置１０３では、後面３０Ｂの第３端部３３は、上記回転方向において、第４端部３４よりも前側に配置されているが、これに限られるものではない。空気調和装置１０３では、第１端部３１が上記回転方向において第２端部３２よりも前側に配置されている限りにおいて、後面３０Ｂの第３端部３３が上記回転方向において第４端部３４よりも後側に配置されていてもよい。言い換えると、導風部材３０の外角である上記第２角度は鈍角であってもよい。 In the air conditioner 103 shown in FIG. 8, the third end 33 of the rear surface 30B is arranged in front of the fourth end 34 in the rotation direction, but the present invention is not limited to this. .. In the air conditioner 103, as long as the first end 31 is arranged in front of the second end 32 in the rotation direction, the third end 33 of the rear surface 30B is the fourth end 34 in the rotation direction. It may be arranged later than. In other words, the second angle, which is the outer angle of the wind guide member 30, may be an obtuse angle.
　なお、空気調和装置１０３は、上記点を除き、空気調和装置１０１または空気調和装置１０２と同様の構成を備えていてもよい。空気調和装置１０３において、導風部材３０の上方端部３５は、上記回転方向において下方端部３６よりも後側に配置されていてもよい。空気調和装置１０３において、導風部材３０の前面３０Ａが上記回転方向の前側に向かって凸状に設けられていてもよい。 The air conditioner 103 may have the same configuration as the air conditioner 101 or the air conditioner 102, except for the above points. In the air conditioner 103, the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction. In the air conditioner 103, the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction.
　実施の形態５．
　図９は、実施の形態５に係る空気調和装置１０４の部分平面図である。実施の形態５に係る空気調和装置１０４は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、後述する比率Ｌ／Ｍが０．２以上０．５以下である点で、空気調和装置１００とは異なる。言い換えると、空気調和装置１００では比率Ｌ／Ｍの値は特に制限されていないが、空気調和装置１０４では比率Ｌ／Ｍが０．２以上０．５以下に制限されている。なお、図９では、ベルマウス２０、導風部材３０、および熱交換器４０以外の部品の図示が省略されている。 Embodiment 5.
FIG. 9 is a partial plan view of the air conditioner 104 according to the fifth embodiment. The air conditioner 104 according to the fifth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the ratio L / M described later is 0.2 or more and 0.5 or less. In that respect, it differs from the air conditioner 100. In other words, the value of the ratio L / M is not particularly limited in the air conditioner 100, but the ratio L / M is limited to 0.2 or more and 0.5 or less in the air conditioner 104. In FIG. 9, parts other than the bell mouth 20, the air guide member 30, and the heat exchanger 40 are not shown.
　図９に示されるように、導風部材３０の上記径方向の寸法をＬとする。寸法Ｌは、導風部材３０の第１端部３１と第２端部３２との間の上記径方向の距離である。導風部材３０の第２端部３２と回転中心軸Ｏとを結ぶ仮想線分上での、ベルマウス２０の第２面２０Ｂと吸気面４１との間の距離をＭとする。空気調和装置１０４において、上記距離Ｍに対する寸法Ｌの比率Ｌ／Ｍは、０．２以上０．５以下である。 As shown in FIG. 9, the radial dimension of the air guide member 30 is L. The dimension L is the radial distance between the first end portion 31 and the second end portion 32 of the air guide member 30. Let M be the distance between the second surface 20B of the bell mouth 20 and the intake surface 41 on the virtual line segment connecting the second end 32 of the air guide member 30 and the rotation center axis O. In the air conditioner 104, the ratio L / M of the dimension L to the distance M is 0.2 or more and 0.5 or less.
　図１０は、上記比率Ｌ／Ｍとファンモータの消費電力との関係を示すグラフである。図１０の横軸は上記比率Ｌ／Ｍを示し、図１０の縦軸はファンモータの消費電力を示す。図１０に示されるように、上記比率Ｌ／Ｍが０．２未満の場合、上記比率Ｌ／Ｍが０．２以上である場合と比べて消費電力が増大する。これは、上記比率Ｌ／Ｍが０．２未満の場合、上記比率Ｌ／Ｍが０．２以上である場合と比べて、上記第１の流れ（旋回流）を抑制する効果が小さくなるためである。また、上記比率Ｌ／Ｍが０．５超えの場合、上記比率Ｌ／Ｍが０．５以下である場合と比べて消費電力が増大する。これは、上記比率Ｌ／Ｍが０．５超えの場合、上記比率Ｌ／Ｍが０．５以下である場合と比べて、導風部材３０が熱交換器４０に接近して、熱交換器４０に流入する気流に対する通風抵抗が大きくなるためである。よって、空気調和装置１０４では、上記比率Ｌ／Ｍが０．２以上０．５以下であるため、上記比率Ｌ／Ｍが０．２未満または０．５超えとされた空気調和装置１００と比べて、消費電力が低減される。そのため、空気調和装置１０４のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 FIG. 10 is a graph showing the relationship between the ratio L / M and the power consumption of the fan motor. The horizontal axis of FIG. 10 shows the ratio L / M, and the vertical axis of FIG. 10 shows the power consumption of the fan motor. As shown in FIG. 10, when the ratio L / M is less than 0.2, the power consumption increases as compared with the case where the ratio L / M is 0.2 or more. This is because when the ratio L / M is less than 0.2, the effect of suppressing the first flow (swirl flow) is smaller than when the ratio L / M is 0.2 or more. Is. Further, when the ratio L / M exceeds 0.5, the power consumption increases as compared with the case where the ratio L / M is 0.5 or less. This is because when the ratio L / M is more than 0.5, the airflow guiding member 30 is closer to the heat exchanger 40 than when the ratio L / M is 0.5 or less. This is because the ventilation resistance to the airflow flowing into the 40 increases. Therefore, in the air conditioner 104, since the ratio L / M is 0.2 or more and 0.5 or less, it is compared with the air conditioner 100 in which the ratio L / M is less than 0.2 or more than 0.5. Therefore, the power consumption is reduced. Therefore, the power consumption and noise of the fan motor of the air conditioner 104 are greatly reduced as compared with the conventional air conditioner.
　なお、空気調和装置１０４は、上記点を除き、空気調和装置１０１、空気調和装置１０２または空気調和装置１０３と同様の構成を備えていてもよい。空気調和装置１０４において、導風部材３０の上方端部３５は、上記回転方向において下方端部３６よりも後側に配置されていてもよい。空気調和装置１０４において、導風部材３０の前面３０Ａが上記回転方向の前側に向かって凸状に設けられていてもよい。空気調和装置１０４において、上記回転方向における前面３０Ａの第１端部３１と後面３０Ｂとの間の距離が、上記回転方向における前面３０Ａの第２端部３２と後面３０Ｂとの間の距離よりも長くてもよい。 The air conditioner 104 may have the same configuration as the air conditioner 101, the air conditioner 102, or the air conditioner 103, except for the above points. In the air conditioner 104, the upper end portion 35 of the air guiding member 30 may be arranged behind the lower end portion 36 in the rotation direction. In the air conditioner 104, the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction. In the air conditioner 104, the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long.
　実施の形態６．
　図１１は、実施の形態６に係る空気調和装置１０５の斜視図である。実施の形態６に係る空気調和装置１０５は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、空気調和装置１０５では、上記回転軸に沿った方向において、導風部材３０の外周端部とベルマウス２０の第２部２２との間の距離が上記径方向において内周側から外周側に向かうにつれて短くなっている点で、空気調和装置１００とは異なる。なお、図１１では、遠心ファン１０、ベルマウス２０、および導風部材３０以外の部品の図示が省略されている。 Embodiment 6.
FIG. 11 is a perspective view of the air conditioner 105 according to the sixth embodiment. The air conditioner 105 according to the sixth embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but the air conditioner 105 guides air in a direction along the rotation axis. It differs from the air conditioner 100 in that the distance between the outer peripheral end of the member 30 and the second portion 22 of the bell mouth 20 becomes shorter from the inner peripheral side to the outer peripheral side in the radial direction. In FIG. 11, parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown.
　上記回転軸に沿った方向において、導風部材３０の第２端部３２と遠心ファン１０との間の距離および導風部材３０の第４端部３４と遠心ファン１０との間の距離は、上記径方向において内周側から外周側に向かうにつれて長くなっている。 In the direction along the rotation axis, the distance between the second end 32 of the air guide member 30 and the centrifugal fan 10 and the distance between the fourth end 34 of the air guide member 30 and the centrifugal fan 10 are determined. In the above radial direction, it becomes longer from the inner peripheral side to the outer peripheral side.
　言い換えると、上記径方向において、導風部材３０の外周端部と熱交換器４０の吸気面４１（図４参照）との間の距離は、上記回転軸に沿った方向において遠心ファン１０側に向かうにつれて長くなっている。上記径方向において、導風部材３０の第２端部３２と熱交換器４０の第１吸気面４１Ａ（図４参照）との間の距離および導風部材３０の第４端部３４と第１吸気面４１Ａとの間の距離は、上記回転軸に沿った方向において遠心ファン１０側に向かうにつれて長くなっている。 In other words, in the radial direction, the distance between the outer peripheral end of the air guide member 30 and the intake surface 41 (see FIG. 4) of the heat exchanger 40 is closer to the centrifugal fan 10 in the direction along the rotation axis. It gets longer as you go. In the above radial direction, the distance between the second end 32 of the air guide member 30 and the first intake surface 41A (see FIG. 4) of the heat exchanger 40 and the fourth end 34 and the first of the air guide member 30. The distance from the intake surface 41A becomes longer toward the centrifugal fan 10 in the direction along the rotation axis.
　このような空気調和装置１０５では、空気調和装置１００と比べて、熱交換器４０に流入する気流に対する通風抵抗が低減されている。そのため、空気調和装置１０５のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 In such an air conditioner 105, the ventilation resistance to the airflow flowing into the heat exchanger 40 is reduced as compared with the air conditioner 100. Therefore, the power consumption and noise of the fan motor of the air conditioner 105 are greatly reduced as compared with the conventional air conditioner.
　なお、空気調和装置１０５は、上記点を除き、空気調和装置１０１、空気調和装置１０２、空気調和装置１０３、または空気調和装置１０４と同様の構成を備えていてもよい。空気調和装置１０５において、導風部材３０の上方端部３５は、上記回転方向において下方端部３６よりも後側に配置されていてもよい。空気調和装置１０５において、導風部材３０の前面３０Ａが上記回転方向の前側に向かって凸状に設けられていてもよい。空気調和装置１０５において、上記回転方向における前面３０Ａの第１端部３１と後面３０Ｂとの間の距離が、上記回転方向における前面３０Ａの第２端部３２と後面３０Ｂとの間の距離よりも長くてもよい。空気調和装置１０５において、比率Ｌ／Ｍが０．２以上０．５以下であってもよい。 The air conditioner 105 may have the same configuration as the air conditioner 101, the air conditioner 102, the air conditioner 103, or the air conditioner 104, except for the above points. In the air conditioner 105, the upper end portion 35 of the wind guide member 30 may be arranged behind the lower end portion 36 in the rotation direction. In the air conditioner 105, the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotational direction. In the air conditioner 105, the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long. In the air conditioner 105, the ratio L / M may be 0.2 or more and 0.5 or less.
　実施の形態７．
　図１２は、実施の形態７に係る空気調和装置１０６の断面図である。実施の形態７に係る空気調和装置１０６は、実施の形態１に係る空気調和装置１００と基本的に同様の構成を備えるが、上記回転軸に沿った方向において、導風部材３０の上方端部３５と仮想面ＶＳ１との間の上記回転軸に沿った方向の距離が上記径方向において内周側から外周側に向かうにつれて長くなっている点で、空気調和装置１００とは異なる。言い換えると、空気調和装置１０５では、上記回転軸に沿った方向において、導風部材３０の上方端部３５とベルマウス２０の第２部２２との間の距離が上記径方向において内周側から外周側に向かうにつれて短くなっている。なお、図１２では、遠心ファン１０、ベルマウス２０、および導風部材３０以外の部品の図示が省略されている。 Embodiment 7.
FIG. 12 is a cross-sectional view of the air conditioner 106 according to the seventh embodiment. The air conditioner 106 according to the seventh embodiment has basically the same configuration as the air conditioner 100 according to the first embodiment, but has an upper end portion of the air guide member 30 in the direction along the rotation axis. It differs from the air conditioner 100 in that the distance between the 35 and the virtual surface VS1 in the direction along the rotation axis increases from the inner peripheral side to the outer peripheral side in the radial direction. In other words, in the air conditioner 105, the distance between the upper end portion 35 of the wind guide member 30 and the second portion 22 of the bell mouth 20 in the direction along the rotation axis is from the inner peripheral side in the radial direction. It becomes shorter toward the outer circumference. In FIG. 12, parts other than the centrifugal fan 10, the bell mouth 20, and the air guide member 30 are not shown.
　導風部材３０の前面３０Ａの上方端部３５は、上記仮想面ＶＳ１と交差する方向に延びている。上記回転中心軸Ｏと直交しかつ導風部材３０の上方端部３５の上記径方向の外周端部を通る仮想面ＶＳ２と、上記回転中心軸Ｏと直交しかつ導風部材３０の上方端部３５の上記径方向の内周端部を通る仮想面ＶＳ３とを考える。導風部材３０の上方端部３５と仮想面ＶＳ１との間の上記回転軸に沿った方向の距離は、仮想面ＶＳ１と仮想面ＶＳ３との間の距離以上、仮想面ＶＳ１と仮想面ＶＳ２との間の距離以下である。仮想面ＶＳ１と仮想面ＶＳ３との間の距離はゼロであってもよい。また、仮想面ＶＳ３は仮想面ＶＳ１よりも遠心ファン１０の主板１２側に配置されていてもよい。 The upper end 35 of the front surface 30A of the wind guide member 30 extends in the direction intersecting the virtual surface VS1. The virtual surface VS2 that is orthogonal to the rotation center axis O and passes through the outer peripheral end portion of the upper end portion 35 of the wind guide member 30 in the radial direction, and the upper end portion of the wind guide member 30 that is orthogonal to the rotation center axis O. Consider a virtual surface VS3 that passes through the radial inner peripheral end of 35. The distance in the direction along the rotation axis between the upper end 35 of the wind guide member 30 and the virtual surface VS1 is equal to or greater than the distance between the virtual surface VS1 and the virtual surface VS3, and the virtual surface VS1 and the virtual surface VS2. Is less than or equal to the distance between. The distance between the virtual surface VS1 and the virtual surface VS3 may be zero. Further, the virtual surface VS3 may be arranged on the main plate 12 side of the centrifugal fan 10 with respect to the virtual surface VS1.
　上記回転軸に沿った方向において、導風部材３０の外周端部とベルマウス２０の第２部２２との間の距離は、例えば上記径方向において一定である。 The distance between the outer peripheral end of the air guide member 30 and the second portion 22 of the bell mouth 20 in the direction along the rotation axis is constant, for example, in the radial direction.
　このような空気調和装置１０６では、空気調和装置１００と比べて、導風部材３０に気流が衝突することに伴う圧力損失の増大、および上記衝突に伴う騒音の発生が抑制されている。そのため、空気調和装置１０６のファンモータの消費電力および騒音は従来の空気調和機と比べて大きく低減されている。 In such an air conditioner 106, as compared with the air conditioner 100, the increase in pressure loss due to the collision of the airflow with the air guide member 30 and the generation of noise due to the collision are suppressed. Therefore, the power consumption and noise of the fan motor of the air conditioner 106 are greatly reduced as compared with the conventional air conditioner.
　なお、空気調和装置１０６は、上記点を除き、空気調和装置１０１、空気調和装置１０２、空気調和装置１０３、空気調和装置１０４、または空気調和装置１０５と同様の構成を備えていてもよい。空気調和装置１０６において、導風部材３０の上方端部３５は、上記回転方向において下方端部３６よりも後側に配置されていてもよい。空気調和装置１０６において、導風部材３０の前面３０Ａが上記回転方向の前側に向かって凸状に設けられていてもよい。空気調和装置１０６において、上記回転方向における前面３０Ａの第１端部３１と後面３０Ｂとの間の距離が、上記回転方向における前面３０Ａの第２端部３２と後面３０Ｂとの間の距離よりも長くてもよい。空気調和装置１０６において、比率Ｌ／Ｍが０．２以上０．５以下であってもよい。空気調和装置１０６において、上記回転軸に沿った方向において、導風部材３０の外周端部とベルマウス２０の第２部２２との間の距離が上記径方向において内周側から外周側に向かうにつれて短くなっていてもよい。 The air conditioner 106 may have the same configuration as the air conditioner 101, the air conditioner 102, the air conditioner 103, the air conditioner 104, or the air conditioner 105, except for the above points. In the air conditioner 106, the upper end portion 35 of the wind guide member 30 may be arranged behind the lower end portion 36 in the rotation direction. In the air conditioner 106, the front surface 30A of the air guiding member 30 may be provided in a convex shape toward the front side in the rotation direction. In the air conditioner 106, the distance between the first end 31 of the front surface 30A and the rear surface 30B in the rotation direction is larger than the distance between the second end 32 of the front surface 30A and the rear surface 30B in the rotation direction. It may be long. In the air conditioner 106, the ratio L / M may be 0.2 or more and 0.5 or less. In the air conditioner 106, the distance between the outer peripheral end of the air guide member 30 and the second portion 22 of the bell mouth 20 is from the inner peripheral side to the outer peripheral side in the radial direction in the direction along the rotation axis. It may become shorter as it increases.
　実施の形態１～７に係る空気調和装置１００～１０６は、複数の導風部材３０を備えていてもよい。図１３は、複数の導風部材３０を備える空気調和装置１００を示す部分平面図である。図１３に示されるように、複数の導風部材３０の各々は、例えば回転中心軸Ｏに対し互いに回転対称性を有するように設けられている。複数の導風部材３０の各々は、例えば回転中心軸Ｏに対し互いに回転対称性を有するように設けられている。熱交換器４０を上記延在方向から見たときに吸気面４１が四角形状である場合、複数の導風部材３０は、例えば４回の回転対称性を有している。なお、複数の導風部材３０の各々は、上述した構成を備えている限りにおいて、互いに異なる構成を備えていてもよい。複数の導風部材３０の各々は、例えば熱交換器４０の構成に応じて適宜設定され得る。 The air conditioners 100 to 106 according to the first to seventh embodiments may include a plurality of air guiding members 30. FIG. 13 is a partial plan view showing an air conditioner 100 including a plurality of wind guide members 30. As shown in FIG. 13, each of the plurality of air guiding members 30 is provided so as to have rotational symmetry with respect to, for example, the rotation center axis O. Each of the plurality of air guiding members 30 is provided so as to have rotational symmetry with respect to, for example, the rotation center axis O. When the intake surface 41 has a quadrangular shape when the heat exchanger 40 is viewed from the extending direction, the plurality of air guiding members 30 have rotation symmetry of, for example, four times. In addition, each of the plurality of wind guide members 30 may have different configurations as long as they have the above-described configurations. Each of the plurality of air guiding members 30 can be appropriately set according to, for example, the configuration of the heat exchanger 40.
　以上のように本発明の実施の形態について説明を行なったが、上述の実施の形態を様々に変形することも可能である。また、本発明の範囲は上述の実施の形態に限定されるものではない。本発明の範囲は、請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更を含むことが意図される。 Although the embodiment of the present invention has been described as described above, it is also possible to modify the above-described embodiment in various ways. Moreover, the scope of the present invention is not limited to the above-described embodiment. The scope of the present invention is indicated by the claims and is intended to include all modifications within the meaning and scope equivalent to the claims.
　１０　遠心ファン、１１　主板、１２　翼、１３　側板、１３ａ，２３　内周端部、１３ｂ　外周端部、１４　吸込口、１５　吹出口、２０　ベルマウス、２０Ａ　第１面、２０Ｂ　第２面、２１　第１部、２２　第２部、３０　導風部材、３０Ａ　前面、３０Ｂ　後面、３１　第１端部、３２　第２端部、３３　第３端部、３４　第４端部、３５　上方端部、３６　下方端部、４０　熱交換器、４１　吸気面、４１Ａ　第１吸気面、４１Ｂ　第２吸気面、５０　ケーシング、５１　吸気口、５２　吹出口、５３　ドレインパン、６０　モータ、１００，１０１，１０２，１０３，１０４，１０５，１０６　空気調和装置。 10 Centrifugal fan, 11 main plate, 12 wings, 13 side plates, 13a, 23 inner peripheral end, 13b outer peripheral end, 14 suction port, 15 air outlet, 20 bell mouth, 20A 1st surface, 20B 2nd surface, 21st 1st part, 22nd part, 30th air-conditioning member, 30A front, 30B rear surface, 31st 1st end, 32 2nd end, 33 3rd end, 34 4th end, 35 upper end, 36 lower End, 40 heat exchanger, 41 intake surface, 41A first intake surface, 41B second intake surface, 50 casing, 51 intake port, 52 outlet, 53 drain pan, 60 motor, 100, 101, 102, 103, 104, 105, 106 Air conditioner.

Claims (12)

  1. 　遠心ファンと、
    　空気を前記遠心ファンに導くベルマウスと、
    　前記遠心ファンの回転軸に対する径方向において、前記ベルマウスよりも外周側に配置されている導風部材とを備え、
    　前記導風部材は、前記遠心ファンの回転方向において前側を向いた前面を有し、
    　前記導風部材の前記前面は、前記径方向において、最も内周側に位置する第１端部と、最も外周側に位置する第２端部とを有し、
    　前記第１端部は、前記回転方向において、前記第２端部よりも前側に配置されている、空気調和装置。     Centrifugal fan and
    A bell mouth that guides air to the centrifugal fan,
    A wind guide member arranged on the outer peripheral side of the bell mouth in the radial direction with respect to the rotation axis of the centrifugal fan is provided.
    The air guide member has a front surface facing forward in the rotation direction of the centrifugal fan.
    The front surface of the air guide member has a first end portion located on the innermost peripheral side and a second end portion located on the outermost peripheral side in the radial direction.
    The first end portion is an air conditioner arranged in front of the second end portion in the rotation direction.
  2. 　前記導風部材の前記前面は、前記遠心ファンの回転軸に沿った方向において、前記遠心ファンに最も近い位置にある上方端部と、前記上方端部とは反対側に位置する下方端部とを含み、
    　前記上方端部は、前記遠心ファンの回転方向において、前記下方端部よりも後側に配置されている、請求項１に記載の空気調和装置。     The front surface of the air guide member includes an upper end portion located closest to the centrifugal fan and a lower end portion located on the opposite side of the upper end portion in a direction along the rotation axis of the centrifugal fan. Including
    The air conditioner according to claim 1, wherein the upper end portion is arranged on the rear side of the lower end portion in the rotation direction of the centrifugal fan.
  3. 　前記回転軸に沿った方向において、前記導風部材の前記上方端部と前記遠心ファンとの間の距離は、前記径方向において内周側から外周側に向かうにつれて長くなっている、請求項２に記載の空気調和装置。 2. The distance between the upper end of the wind guide member and the centrifugal fan in the direction along the rotation axis increases from the inner peripheral side to the outer peripheral side in the radial direction. The air conditioner described in.
  4. 　前記導風部材を前記回転軸に沿った方向から視たときに、前記前面は、前記回転方向の前側に向かって凸状に設けられている、請求項１～３のいずれか１項に記載の空気調和装置。 The method according to any one of claims 1 to 3, wherein the front surface is provided in a convex shape toward the front side in the rotation direction when the air guiding member is viewed from a direction along the rotation axis. Air conditioner.
  5. 　前記導風部材は、前記回転方向において前側を向いた後面を有し、
    　前記回転方向における前記前面の前記第１端部と前記後面との間の距離は、前記回転方向における前記前面の前記第２端部と前記後面との間の距離よりも長い、請求項１～４のいずれか１項に記載の空気調和装置。     The wind guide member has a rear surface facing forward in the direction of rotation.
    Claims 1 to 1, wherein the distance between the first end portion of the front surface and the rear surface in the rotation direction is longer than the distance between the second end portion of the front surface and the rear surface in the rotation direction. The air conditioner according to any one of 4.
  6. 　前記回転軸に沿った方向において、前記導風部材の外周端部と前記遠心ファンとの間の距離は、前記径方向において内周側から外周側に向かうにつれて長くなっている、請求項１～５のいずれか１項に記載の空気調和装置。 The distance between the outer peripheral end portion of the air guide member and the centrifugal fan in the direction along the rotation axis becomes longer from the inner peripheral side to the outer peripheral side in the radial direction. 5. The air conditioner according to any one of 5.
  7. 　平面視において、前記導風部材が前記ベルマウスの接線に対して成す角度は、９０度未満である、請求項１～６のいずれか１項に記載の空気調和装置。 The air conditioner according to any one of claims 1 to 6, wherein the angle formed by the air guiding member with respect to the tangent line of the bell mouth is less than 90 degrees in a plan view.
  8. 　前記ベルマウスは、前記径方向において外周側を向いた外周面を有し、
    　前記導風部材の前記第１端部は、前記ベルマウスの前記外周面と接続されている、請求項１～７のいずれか１項に記載の空気調和装置。     The bell mouth has an outer peripheral surface facing the outer peripheral side in the radial direction.
    The air conditioner according to any one of claims 1 to 7, wherein the first end portion of the air guiding member is connected to the outer peripheral surface of the bell mouth.
  9. 　前記径方向において前記遠心ファンの外周側に配置された熱交換器をさらに備え、
    　前記熱交換器は、前記遠心ファン側を向いた吸気面を有し、
    　前記導風部材は、前記径方向において前記吸気面よりも内側に配置されている、請求項１～８のいずれか１項に記載の空気調和装置。     A heat exchanger arranged on the outer peripheral side of the centrifugal fan in the radial direction is further provided.
    The heat exchanger has an intake surface facing the centrifugal fan side.
    The air conditioner according to any one of claims 1 to 8, wherein the air guiding member is arranged inside the intake surface in the radial direction.
  10. 　前記導風部材は、前記吸気面に対して直交する方向に延在している、請求項９に記載の空気調和装置。 The air conditioner according to claim 9, wherein the air guiding member extends in a direction orthogonal to the intake surface.
  11. 　前記ベルマウスと前記熱交換器との間の前記径方向の距離は、前記回転方向において変化し、
    　前記導風部材は、前記径方向において前記ベルマウスと前記熱交換器との間を最短距離で結ぶ仮想線分と、前記回転方向において間隔を隔てて配置されている、請求項９または１０に記載の空気調和装置。     The radial distance between the bell mouth and the heat exchanger varies in the direction of rotation.
    According to claim 9 or 10, the air-conditioning member is arranged with a virtual line segment connecting the bell mouth and the heat exchanger at the shortest distance in the radial direction and at intervals in the rotational direction. The described air conditioner.
  12. 　前記導風部材の前記第２端部と前記遠心ファンの回転軸とを結ぶ仮想線分上での前記ベルマウスと前記吸気面との間の距離をＭとし、前記導風部材の前記径方向の寸法をＬとしたときに、前記距離Ｍに対する前記寸法Ｌの比率Ｌ／Ｍは、０．２以上０．５以下である、請求項９～１１のいずれか１項に記載の空気調和装置。 Let M be the distance between the bell mouth and the intake surface on the virtual line segment connecting the second end of the air guide member and the rotation axis of the centrifugal fan, and let M be the radial direction of the air guide member. The air conditioner according to any one of claims 9 to 11, wherein the ratio L / M of the dimension L to the distance M is 0.2 or more and 0.5 or less when the dimension of is L. ..
PCT/JP2019/018798 2019-05-10 2019-05-10 Air-conditioning device WO2020230206A1 (en)

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Citations (3)

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JP2016011827A (en) * 2014-06-05 2016-01-21 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Ceiling embedded type indoor equipment and air conditioner using the same
JP2016132991A (en) * 2015-01-15 2016-07-25 パナソニックＩｐマネジメント株式会社 Blower
WO2018116341A1 (en) * 2016-12-19 2018-06-28 三菱電機株式会社 Centrifugal blower, air-conditioning device, and method for manufacturing centrifugal blower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016011827A (en) * 2014-06-05 2016-01-21 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Ceiling embedded type indoor equipment and air conditioner using the same
JP2016132991A (en) * 2015-01-15 2016-07-25 パナソニックＩｐマネジメント株式会社 Blower
WO2018116341A1 (en) * 2016-12-19 2018-06-28 三菱電機株式会社 Centrifugal blower, air-conditioning device, and method for manufacturing centrifugal blower

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