WO2013136992A1 - Bidirectional-blow-out, ceiling-embedded air conditioner - Google Patents

Bidirectional-blow-out, ceiling-embedded air conditioner Download PDF

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Publication number
WO2013136992A1
WO2013136992A1 PCT/JP2013/055283 JP2013055283W WO2013136992A1 WO 2013136992 A1 WO2013136992 A1 WO 2013136992A1 JP 2013055283 W JP2013055283 W JP 2013055283W WO 2013136992 A1 WO2013136992 A1 WO 2013136992A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
air conditioner
ceiling
branch heat
branch
Prior art date
Application number
PCT/JP2013/055283
Other languages
French (fr)
Japanese (ja)
Inventor
伸幸 小嶋
Original Assignee
ダイキン工業 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 ダイキン工業 株式会社 filed Critical ダイキン工業 株式会社
Priority to EP13760702.4A priority Critical patent/EP2827071B1/en
Priority to ES13760702.4T priority patent/ES2676711T3/en
Priority to CN201380013481.3A priority patent/CN104169652B/en
Publication of WO2013136992A1 publication Critical patent/WO2013136992A1/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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • 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
    • F24F1/0068—Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels

Definitions

  • the present invention relates to a ceiling-embedded air conditioner of a two-way blowing type, and more particularly to a structure of a heat exchanger.
  • a four-direction air conditioner includes a blowout port formed along four sides of a decorative panel in a decorative panel attached to a ceiling surface.
  • a two-way blow-out type air conditioner includes a blowout port formed along two opposing sides of the decorative panel in the decorative panel.
  • the plane shape of the decorative panel is formed in a rectangular shape, and the indoor outlet is on the opposite long side It is provided along.
  • Patent Document 1 discloses a conventional example of such a two-way blowing type ceiling-embedded air conditioner. This conventional example will be described with reference to FIG.
  • the air conditioner includes a rectangular parallelepiped product body 101 having a rectangular planar shape, and a heat exchanger 102 and a turbo fan 103 built in the product body 101.
  • the heat exchanger 102 is usually composed of two branch heat exchangers 104.
  • the two branch heat exchangers 104 are respectively disposed inside the side walls extending in the longitudinal direction of the product main body 101.
  • the turbo fan 103 is sandwiched between two branch heat exchangers 104.
  • the turbo fan 103 is generally disposed on a center line 105 extending in the longitudinal direction of the product main body 101.
  • the two branch heat exchangers 104 are curved so as to form an obtuse angle at the center in the longitudinal direction of the product main body 101 when viewed in plan, and the two obtuse angles are opposed to each other with the center line 105 interposed therebetween. .
  • curving the heat exchanger 102 in this way the overall length in the longitudinal direction of the branch heat exchanger 104 is increased, and the heat exchange area of the heat exchanger 102 is increased.
  • the overall length in the longitudinal direction of the branch heat exchanger 104 can be further increased by changing the shape of the two branch heat exchangers 104.
  • the length of the branch heat exchanger 104 in the longitudinal direction is increased to increase the heat exchange area, it is important to design the shape and structure of the branch heat exchanger so as not to reduce the productivity.
  • An object of the present invention is to provide a two-way blowing type ceiling-embedded air conditioner that maintains productivity and has a large heat exchange area of the heat exchanger.
  • a decorative panel having an indoor outlet for blowing out temperature-controlled air into the room and an indoor inlet for sucking in indoor air, a blower and heat
  • a two-way blow-out type ceiling-embedded air conditioner having a rectangular plane shape, which includes a rectangular parallelepiped product main body with a built-in exchanger.
  • the blower is a centrifugal blower arranged in the product main body so that the rotation axis faces the vertical direction.
  • the heat exchanger includes two branch heat exchangers arranged so as to sandwich the blower between the two indoor outlets and the blower when viewed in a plan view.
  • the two branch heat exchangers are divided into a first end portion, an intermediate portion, and a second end portion along the longitudinal direction.
  • a refrigerant pipe outside the branch heat exchanger is connected to the refrigerant passage of the branch heat exchanger, and the refrigerant passage is folded at the second end.
  • the intermediate portion is disposed in parallel with the indoor outlet.
  • the first end and the second end are each bent toward the blower, and the first end and the second end are bent at different angles with respect to the intermediate portion. Yes.
  • both ends of each branch heat exchanger are bent toward the blower. For this reason, compared with the above-described conventional two-way blowing type ceiling-embedded air conditioner, the total length in the longitudinal direction of the branch heat exchanger is increased, thereby increasing the heat exchange area of each branch heat exchanger. be able to.
  • the bending angle of the first end portion with respect to an extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is preferably 45 degrees or less.
  • the brazing operation for connecting the shunt pipe to both branch heat exchangers becomes easy.
  • the brazing operation is performed as follows. First, two branch heat exchangers are temporarily assembled using a brazing jig. Then, the pipe is brazed in one of the branch heat exchangers, and then the pipe is brazed in the other branch heat exchanger. At this time, it is necessary to position the temporarily assembled branch heat exchanger so that the pipe to be brazed faces in the vertical direction. For example, when connecting a shunt pipe at the first end of two branch heat exchangers, the end of the heat exchange tube protruding at the first end of each of the two branch heat exchangers is in the vertical direction.
  • the bending angle of the second end portion with respect to the extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is the first bending angle relative to the extension line in the longitudinal direction of the intermediate portion. It is preferable that it is larger than the bending angle at the end.
  • the overall length in the longitudinal direction of the branch heat exchanger can be made longer.
  • the heat exchange area of the branch heat exchanger can be increased, and therefore the heat exchange area of the heat exchanger can be increased.
  • a shunt pipe from a shunt is connected to the first end of the branch heat exchanger.
  • the shunt tube has an outermost straight line connecting the outermost positions in the longitudinal direction of the product main body at the first ends of the two branch heat exchangers and the two branch heats when viewed in plan.
  • the outermost straight line related to the heat exchanger is defined as a line connecting the outermost positions of such connecting pipes in the two opposing branch heat exchangers.
  • the shunt pipe from the shunt has a two-sided extension of the outermost straight line and the end surfaces of the first end portions of the two branch heat exchangers facing each other in the plan view. Are arranged in a triangular area formed by two extension lines. For this reason, the bundle
  • the heat exchanger is configured such that a plurality of refrigerant outlet pipes led out from the two branch heat exchangers are connected to one header. preferable.
  • the blower is arranged to be biased toward the second end in the longitudinal direction of the product main body.
  • the space between the blower and the first end can be made larger than the space between the blower and the second end.
  • This larger space can be used as a space for connection wiring between the electrical component box and the electrical component.
  • an electrical component such as a drain pump is often connected near the first end. For this reason, it is advantageous for the connection of these electric components that the space between an air blower and the said 1st edge part is large.
  • two of the blowers are disposed at regular intervals in the longitudinal direction of the product main body, and an intermediate point between the two blowers is biased toward the second end portion.
  • an intermediate point between the two blowers is biased toward the second end portion.
  • the two blowers are arranged in the product main body so as to be biased toward the second end portion.
  • the space between the other blower of the two and the first end can be made larger than the space between the blower of the two and the second end.
  • This larger space can be effectively used as a space for connection wiring between the electrical component box and the electrical component.
  • it is convenient for connecting an electrical component such as a drain pump that is often disposed near the first end.
  • the overall length in the longitudinal direction of the branch heat exchanger is increased as compared with the conventional two-way blowing type ceiling embedded air conditioner, thereby increasing the heat exchange area of each branch heat exchanger.
  • the bending angle at both ends of the bent branch heat exchanger is different, so the dimensions of the product body, the gripping amount of the branch heat exchanger bender, and the bending length at both ends of the branch heat exchanger
  • the bending angle of the both end portions with respect to the intermediate portion can be arbitrarily set in consideration of the relationship between the two and the convenience of piping connection work to the branch heat exchanger. Thereby, the bad effect on manufacture of a branch heat exchanger can be avoided.
  • FIG. 1 is an external perspective view of a two-way blowing type ceiling-embedded air conditioner according to Embodiment 1 of the present invention. It is the plane sectional view which showed apparatus arrangement
  • FIG. 5 is a view taken in the direction of arrow V in FIG. 4. It is a perspective view which shows the state which attached the heat exchanger to the brazing jig.
  • Embodiment 1 of the present invention will be described with reference to FIGS.
  • the two-way blowing type ceiling-embedded air conditioner according to Embodiment 1 constitutes an indoor unit in a separate air conditioner.
  • the two-way blowing type ceiling-embedded air conditioner has a rectangular planar shape, and is connected to the decorative panel 10 and the upper surface of the decorative panel 10. 20.
  • the decorative panel 10 is attached to the lower side of the product main body 20 and is locked to the ceiling material 1 (see FIG. 3), and the product main body 20 is suspended from a building structural member (not shown) on the back of the ceiling. It is attached to the member.
  • Both the decorative panel 10 and the product main body 20 have a rectangular planar shape, but the product main body 20 is slightly smaller like the conventional one.
  • the decorative panel 10 is formed with an indoor outlet 11 that blows out temperature-controlled air into the room along two opposing long sides.
  • the decorative panel 10 is formed with an elongated indoor inlet 12 for taking in indoor air inside the indoor outlet 11.
  • the product main body 20 includes a rectangular parallelepiped box-shaped main body casing 21, a blower 30 and a heat exchanger 40 built in the main body casing 21.
  • the blower 30 is a centrifugal blower, more specifically a turbo fan, disposed in the product main body 20 so that the rotation axis faces the vertical direction. As shown in FIG. 2, the blower 30 is arranged such that the rotation axis is positioned on a center line CL extending in the longitudinal direction of the product main body 20 when viewed in plan.
  • the blower 30 is configured to be rotated in a clockwise direction indicated by an arrow in FIG. 2 by a drive motor 32 attached to the top plate of the main body casing 21. As shown in FIG. 3, the lower surface of the blower 30 is defined by a shroud 33.
  • the blower 30 is configured to suck air from the opening on the inner peripheral side of the shroud 33 and blow out the pressurized air from the outer periphery of the impeller 31.
  • the blower 30 has a bell mouth 34 that communicates with the inner peripheral opening of the shroud 33.
  • the bell mouth 34 is configured to communicate with the internal space 13 and the indoor suction port 12 between the decorative panel 10 and the air filter 22 via the air filter 22 disposed in the lower part of the product main body 20. .
  • the heat exchanger 40 is composed of two branch heat exchangers 41 disposed between the two indoor outlets 11 and the blower 30 when viewed in plan. Each branch heat exchanger 41 is arranged on the outlet side of the blower 30.
  • the branch heat exchanger 41 is a plate fin coil in which a plate fin 43 is attached to a U-shaped heat exchange tube 42 (see FIG. 4) constituting the refrigerant passage. As can be seen from FIGS. 4 and 5, each branch heat exchanger 41 has two rows and sixteen stages, and each branch heat exchanger 41 has a seven-pass refrigerant passage.
  • the intermediate portion 41 a of the branch heat exchanger 41 is disposed in parallel with the indoor outlet 11, and both ends of the branch heat exchanger 41 are directed toward the blower 30, in other words, the center. It is bent toward the line CL.
  • the end of the branch heat exchanger 41 on the side to which the external refrigerant pipe is connected is referred to as a first end 41b
  • the refrigerant passage in the branch heat exchanger 41 on the opposite side of the first end 41b is The end on the folded side is defined as a second end 41c.
  • each branch heat exchanger 41 is divided into the first end portion 41 b bent toward the blower 30, the intermediate portion 41 a, and the second end portion 41 c bent toward the blower 30. ing.
  • the bending angle ⁇ of the first end portion 41b with respect to the extension line in the longitudinal direction of the intermediate portion 41a and the bending angle ⁇ of the second end portion 41c with respect to the extension line in the longitudinal direction of the intermediate portion 41a are the branch heat exchanger 41.
  • 90 degrees is preferable.
  • the bending angles ⁇ and ⁇ are set to be smaller than 90 degrees and different from each other.
  • the bending angle ⁇ of the first end 41b of the branch heat exchanger 41 is set to about 45 degrees in order to facilitate the work of brazing the pipe to the heat exchange tube 42.
  • the bending angle ⁇ is the same as the angle with the extension line of the first end portion 41b with respect to the center line CL because the intermediate portion 41a is disposed substantially parallel to the center line CL.
  • the bending angle ⁇ of the second end portion 41c of the branch heat exchanger 41 is a length necessary for the gripping margin of the bender used for bending the second end portion 41c when the bent second end portion 41c is bent.
  • the second end portion 41c is set to have a maximum angle with respect to an extension line in the longitudinal direction of the intermediate portion 41a.
  • the bending angle ⁇ of the second end portion 41c is about 60 degrees. Since the bending angle ⁇ of the bent first end portion 41b is 45 degrees, the first end portion 41b has a sufficient length necessary for the gripping margin of the bender.
  • the bending angle ⁇ of the second end portion 41c is the same as the angle of the extension line of the second end portion 41c with respect to the center line CL because the intermediate portion 41a is disposed substantially parallel to the center line CL.
  • the product body 20 includes a drain pan 50 below the heat exchanger 40.
  • a groove 51 for receiving drain water from the branch heat exchanger 41 is formed in a portion of the drain pan 50 immediately below the branch heat exchanger 41.
  • the drain pan 50 also functions as a partition member that partitions the blowing side and the suction side of the blower 30.
  • the portion of the drain pan 50 that functions as the partition member is referred to as a partition portion 52 in this specification.
  • the partition 52 is formed with a round hole 53 at a portion where the bell mouth 34 is attached so that the air filter 22 and the bell mouth 34 communicate with each other.
  • the partition 52 has an elongated square hole 54 that communicates with the indoor outlet 11 of the decorative panel 10. Is formed.
  • the branch heat exchanger 41 in the vicinity of the first end 41 b of the branch heat exchanger 41, it is related to the refrigerant pipe connection with the equipment constituting the refrigerant circuit outside the heat exchanger 40 and the outdoor unit (not shown). Equipment, equipment for discharging drain water, etc. are arranged.
  • a branching device 61 for branching the liquid refrigerant transported from the outdoor unit, and the branching heat exchange of the refrigerant branched by the branching device 61
  • a plurality of branch pipes 62 for transporting to the vessel 41, a plurality of refrigerant outlet pipes 63 for letting out the gas refrigerant from the branch heat exchanger 41, and a header 64 for collecting the refrigerant outlet pipes 63 are arranged.
  • a liquid refrigerant pipe joint 65 and a gas refrigerant pipe joint 66 for connecting a communication pipe (not shown) with the outdoor unit are attached to the side plate of the main body casing 21.
  • a pipe 68a and a pipe joint 69 for connecting the pipe 68a to an external drain pipe are disposed.
  • each branch heat exchanger 41 is formed with a seven-pass refrigerant passage, seven branch pipes 62 are connected from each branch 61 to each branch heat exchanger 41.
  • the shunt pipe 62 is, when viewed in plan, the outermost straight line 45 connecting the outermost positions in the longitudinal direction of the product main body 20 at the first end portion 41 b of the two branch heat exchangers 41, and the two branch heat exchangers 41.
  • the outermost straight line 45 related to the heat exchanger 40 is defined as a line connecting the outermost positions of such connecting pipes in the two branch heat exchangers 41 facing each other. More specifically, a plurality of locations of the first end 41b of the branch heat exchanger 41 are provided between the heat exchange tubes 42 constituting the refrigerant passage in order to set the refrigerant passage to a predetermined length and arrangement. A communicating U-shaped bending tube 48 is attached.
  • the outermost straight line 45 related to the heat exchanger 40 means a line connecting points located on the outermost side of the bending pipe 48.
  • the two lead wires 46 and 47 are led out at right angles to the air passage surface from the end of the air passage portion on the first end portion 41b side of both the branch heat exchangers 41 to the opposite branch heat exchanger 41 side. Is a line.
  • the edge of the air passage portion on the first end portion 41 b side corresponds to the tube plate 41 d on the first end portion 41 b side in the branch heat exchanger 41. Therefore, more specifically, the lead lines 46 and 47 mean lines obtained by extending the surface of the tube sheet 41d.
  • each branch heat exchanger 41 has a seven-pass refrigerant passage
  • the two branch heat exchangers 41 are configured to lead out seven refrigerant outlet pipes 63, respectively.
  • the tips of these refrigerant outlet pipes 63 extending from the first end 41 b of each branch heat exchanger 41 are connected to one header 64.
  • piping outside the branch heat exchanger 41 connected to the refrigerant passage in the branch heat exchanger 41 refers to the branch pipe 62 and the refrigerant outlet pipe 63.
  • the blower 30 is disposed so as to be closer to the second end 41 c than the first end 41 b of the branch heat exchanger 41. Thereby, the space between the air blower 30 and the 1st end part 41b of the branch heat exchanger 41 becomes larger than the space between the air blower 30 and the 2nd end part 41c of the branch heat exchanger 41.
  • FIG. An electrical component box 71 is disposed below the partition portion 52 in the larger space. The electrical components such as the drain pump 68 and the level sensor 67 arranged in the vicinity of the first end portion 41b of the branch heat exchanger 41 are connected to the electrical components in the electrical component box 71 using this space. ing.
  • the air conditioning operation by this ceiling-embedded air conditioner is performed by operating a compressor mounted in an outdoor unit (not shown) and a blower 30 housed in the product main body 20.
  • the room air flows as shown by the white arrow in FIG. Specifically, the indoor air is sucked from the indoor suction port 12 and sucked into the blower 30 through the internal space 13 of the decorative panel 10 and the air filter 22.
  • the air blown out from the outer periphery of the blower 30 is dispersed in the two branch heat exchangers 41 facing each other, and the temperature is adjusted by passing through each branch heat exchanger 41. Then, the temperature-adjusted air is blown into the room from the indoor air outlet 11 through an elongated rectangular hole 54 formed in the side of the drain pan 50.
  • the flow is evenly divided in the flow dividing pipe 62.
  • the liquid refrigerant branched by the flow divider 61 flows into the refrigerant passages of the branch heat exchanger 41 through the branch pipes 62.
  • the liquid refrigerant passing through each refrigerant passage is vaporized by exchanging heat with room air and becomes a gas refrigerant.
  • the gas refrigerant is collected in the header 64 via the refrigerant outlet pipe 63 and further returned to the outdoor unit via the gas refrigerant pipe joint 66.
  • this air conditioner is configured as a heat pump type and is operated for heating, the refrigerant flows in the opposite direction, but a detailed description thereof is omitted here.
  • the performance of the heat exchanger in such air conditioning operation is improved compared to the conventional example described above.
  • the reason is that the intermediate portion 41a of the branch heat exchanger 41 is arranged in parallel with the indoor outlet 11 and the first end portion 41b and the second end portion 41c of the branch heat exchanger 41 are bent toward the blower 30. This is because the total length in the longitudinal direction of the branch heat exchanger 41 that can be mounted on the product body 20 can be made longer than before, and as a result, the heat exchange area of the heat exchanger 40 is increased.
  • the pipe connection work for the heat exchanger 40 is centered on the brazing work for the branch pipe 62 and the refrigerant outlet pipe 63 for the heat exchange tube 42 at the first end 41 b of the branch heat exchanger 41.
  • the two branch heat exchangers 41 are temporarily assembled in the same posture as when assembled into the product main body 20 using the brazing jig 80.
  • the brazing jig 80 includes an outer member 81 that supports the four locations of the heat exchanger 40 from the outside, and an inner member 82 that presses the intermediate portion 41 a of the branch heat exchanger 41 against the outer member 81.
  • the outer member 81 is a side surface support that supports two opposing portions of the flat support wall 81 a that supports the bottom surface of the heat exchanger 40 and the intermediate portion 41 a of the two branch heat exchangers 41. It consists of a wall 81b and a bent end support wall 81c that supports the second end 41c of the two branch heat exchangers 41 simultaneously.
  • the side support wall 81b and the end support wall 81c are connected to the planar support wall 81a.
  • the inner member 82 includes a pressing wall portion 82a that presses the intermediate portion 41a from the inner side to the side support wall 81b of the outer member 81, and an urging member 82b that urges the pressing wall portion 82a outward.
  • the temporary assembly of the two branch heat exchangers 41 using the brazing jig 80 is performed as follows. First, the second ends 41c of the branch heat exchanger 41 are connected to each other. Then, the connected branch heat exchanger 41 is mounted on the inner side of the outer member 81 of the brazing jig 80 so as to have the same shape as that stored in the product main body 20 as shown in FIG. Next, the urging member 82 b of the inner member 82 is operated to press the intermediate portion 41 a of the branch heat exchanger 41 against the side support wall 81 b of the outer member 81 via the pressing wall portion 82 a.
  • the intermediate portion 41a of the branch heat exchanger 41 is gripped between the side surface support wall 81b of the outer member 81 and the pressing wall portion 82a of the inner member 82.
  • the heat exchanger 40 is temporarily assembled by the brazing jig 80.
  • brazing is first performed on one branch heat exchanger 41, and then brazing is performed on the other branch heat exchanger 41.
  • the tube shaft 41d of the first end 41b in the left branch heat exchanger 41 is held horizontally, and the tube axis of the heat exchange tube 42 to be brazed. Is oriented vertically.
  • the branch pipe 62 and the refrigerant outlet pipe 63 can be brazed easily and reliably to the heat exchange tube 42 at the first end 41b of the left branch heat exchanger 41.
  • the temporarily assembled heat exchanger 40 is rotated together with the brazing jig 80 as shown in the right side of FIG.
  • the branch heat exchanger 41 is brazed as in the case of the left branch heat exchanger 41.
  • the parts to be brazed before being incorporated into the product main body 20 are brazed on the brazing jig 80. It is convenient to attach.
  • the refrigerant outlet pipe 63 in each branch heat exchanger 41 is brazed to the header 64, it is temporarily assembled so that the pipe axis of the refrigerant outlet pipe 63 in the brazed portion is oriented in the vertical direction.
  • the brazing of the refrigerant outlet pipe 63 to the header 64 can be performed easily and reliably.
  • the ceiling-embedded air conditioner according to the present embodiment can achieve the following effects by the above configuration.
  • the overall length in the longitudinal direction of the branch heat exchanger 41 is increased as compared with the above-described conventional two-way blowing type ceiling-embedded air conditioner, thereby increasing the heat exchange area of each branch heat exchanger 41. Can be increased.
  • the bending angle ⁇ of the first end portion 41b and the bending angle ⁇ of the second end portion 41c in the branch heat exchanger 41 are made different. Therefore, the dimensions of the product main body 20, the relationship between the bending heat of the bending heat exchanger 41 and the bending length of both ends of the branch heat exchanger 41, the convenience of pipe connection work to the branch heat exchanger 41, etc. Considering this, the bending angles ⁇ and ⁇ at these ends can be set to arbitrary angles. Thereby, the bad effect on manufacture of a branch heat exchanger can be avoided.
  • the temporarily assembled heat exchanger 40 is to be brazed as described above. It is easy to position so that the tube axis is oriented in the vertical direction. Thereby, the brazing operation
  • the bending angle ⁇ of the second end 41c of the branch heat exchanger 41 is set to be larger than the bending angle ⁇ of the first end 41b. This is advantageous in increasing the overall length of the branch heat exchanger 41 in the longitudinal direction as much as possible. By increasing the overall length of the branch heat exchanger 41 in the longitudinal direction, the heat exchange area of each branch heat exchanger 41 can be increased, and thus the heat exchange area of the heat exchanger 40 can be increased.
  • the shunt pipe 62 from the shunt 61 includes an outermost straight line 45 connecting the outermost positions in the longitudinal direction of the product main body 20 at the first end 41b of both the branch heat exchangers 41, and both the branch heat exchangers.
  • Two lead lines 46 and 47 led out at right angles to the air passage surface from the edge of the first end portion 41b of the air passage portion 41 on the first end portion 41b side of the air passage portion 41 to the opposite branch heat exchanger 41 side; Are arranged in a triangular region formed from Therefore, the bundle of the branch pipes 62 does not hinder the air flow passing through the branch heat exchanger 41.
  • a plurality (specifically, 14) of the diverter pipes 62 led out from the flow divider 61 are arranged so as not to protrude outward in the longitudinal direction from the outermost straight line 45 in plan view. . Therefore, this air conditioner can be formed compactly.
  • the blower 30 Since the blower 30 is disposed in the product main body 20 so as to be biased toward the second end 41c of the branch heat exchanger 41, the blower 30 is more than the space between the blower 30 and the second end 41c. And the space between the first end 41b can be increased. Therefore, this larger space can be effectively used as a space for connection wiring between the electrical component box 71 and the electrical component. This space is particularly convenient for connecting electrical components such as the drain pump 68 and the level sensor 67 that are often arranged near the first end 41b of the branch heat exchanger 41.
  • Embodiment 2 Next, Embodiment 2 will be described with reference to FIG.
  • the two-way blowing type ceiling-embedded air conditioner according to the second embodiment is larger in dimensions in the longitudinal direction of the decorative panel 10 and the product body 20 than the first embodiment, and has two fans 30. The performance is improved by arranging. Other configurations are the same as those of the first embodiment.
  • the two-way blowing-type ceiling-embedded air conditioner according to the second embodiment will be described focusing on differences from the first embodiment.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.
  • the dimensions of the main body casing 21, the decorative panel 10, and the drain pan 50 are used to improve the performance by increasing the longitudinal dimension of the product main body 20 as described above.
  • the longitudinal dimension of the branch heat exchanger 41 is larger than that of the first embodiment so as to correspond to the longitudinal dimension of the product main body 20. More specifically, the dimension of the intermediate part 41a of the branch heat exchanger 41 is larger than that in the first embodiment.
  • the dimensions of the bent first end 41b and second end are the same as in the first embodiment.
  • the two blowers 30 are arranged in the product main body 20 at a constant interval in the longitudinal direction.
  • a partition wall 35 is provided between the two blowers 30 to partition the blow-out space of the blowers 30.
  • the midpoint between the two blowers 30 is biased toward the second end 41c.
  • the ceiling-embedded air conditioner according to Embodiment 2 can achieve the following effects in addition to the effects (1) to (7) according to Embodiment 1 with the above configuration.
  • the two-way blowing type ceiling-embedded air conditioner according to the present invention is not limited to the above-described embodiment, and the following modifications are also applicable. About the following modification, you may apply combining a modification with each other suitably.
  • a plate fin coil in which plate fins are attached to a U-shaped heat exchange tube 42 is described, but other types of heat for air An exchanger may be used.
  • a microchannel heat exchanger having a microchannel serving as a refrigerant passage can be cited.
  • the bending angle ⁇ of the first end portion 41b in the first and second embodiments is to increase the overall length of the branch heat exchanger 41 in the longitudinal direction as much as possible and to braze the pipe at the first end portion 41b. From the viewpoint of facilitating, 45 degrees is considered most preferable. However, the bending angle ⁇ may be another angle. The bending angle ⁇ is preferably set to 45 degrees or less from the viewpoint of improving the workability of brazing the pipe.
  • the bending angle ⁇ of the second end portion 41c is preferably as close to 90 degrees as possible as long as the second end portion 41c has a gripping margin for the bender. Therefore, the bending angle ⁇ described in the previous embodiment is not limited to 60 degrees.
  • the position of the blower 30 in the product main body 20 is biased toward the second end portion 41c.
  • Such an arrangement of the blower 30 in the product main body 20 is preferable when the electrical component box is installed between the blower 30 and the first end 41b side, because the air resistance in the machine does not increase due to wiring or the like.
  • the present invention is not so limited.
  • the shunt pipe 62 from the shunt 61 is the outermost straight line 45 that connects the outermost positions in the longitudinal direction of the product main body 20 at the first ends 41 b of the two branch heat exchangers 41.
  • the first end portion 41b of both the branch heat exchangers 41 are drawn from the edge on the first end portion 41b side of the air passage portion to the opposite branch heat exchanger 41 side at a right angle to the air passage surface. They are arranged in a triangular area formed by two lead lines 46 and 47.
  • the present invention is not so limited.
  • the indoor suction port 12 is formed in an elongated shape similar to the indoor air outlet 11 inside the indoor air outlet 11 on the lower surface of the decorative panel 10. However, the indoor suction port 12 may extend to substantially the entire inner side of the indoor air outlet 11.
  • the lower surface of the decorative panel 10 in the said Embodiment 1 and 2 is formed in the plane.
  • the present invention is not so limited.
  • the center portion of the short side of the decorative panel 10 is protruded downward, and a flat portion extending in the entire long side direction is formed on the protruding portion, and the entire long side direction is extended on both sides of the flat portion.
  • An inclined surface is formed.

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Abstract

This ceiling-embedded air conditioner, which has a rectangular planar shape, is provided with: a cosmetic panel having an interior blow-out opening along each of the opposite long sides; and a product main body that incorporates an air blower and a heat exchanger. The heat exchanger comprises two branched heat exchangers disposed in a manner so as to sandwich the air blower between the two interior blow-out openings in a plan view. The intermediate portions in the lengthwise direction of the branched heat exchangers are disposed parallel to the interior blow-out openings, and both ends of the branched heat exchangers are bent at differing angles with respect to the intermediate portions towards the air blower.

Description

２方向吹出し式の天井埋込型空気調和機Two-way blowout ceiling air conditioner
　本発明は、２方向吹出し式の天井埋込型空気調和機に関し、特に、熱交換器の構造に関する。 The present invention relates to a ceiling-embedded air conditioner of a two-way blowing type, and more particularly to a structure of a heat exchanger.
　従来の天井埋込型空気調和機として、４方向吹出式及び２方向吹出式（ダブルフロータイプ）の空気調和機が知られている。４方向吹出式の空気調和機は、天井面に取り付けられる化粧パネル内に、その化粧パネルの４辺に沿って形成された吹出口を備える。２方向吹出式の空気調和機は、化粧パネル内に、その化粧パネルの対向する２辺に沿って形成された吹出口を備える。多くの場合、２方向吹出式の天井埋込型空気調和機において、部屋のデザインとの調和を図るために、化粧パネルの平面形状は長方形に形成されるとともに、室内吹出口は対向する長辺に沿って設けられている。 As a conventional ceiling-embedded air conditioner, a four-way blowing type and a two-way blowing type (double flow type) air conditioner are known. A four-direction air conditioner includes a blowout port formed along four sides of a decorative panel in a decorative panel attached to a ceiling surface. A two-way blow-out type air conditioner includes a blowout port formed along two opposing sides of the decorative panel in the decorative panel. In many cases, in a two-way blowout type ceiling-mounted air conditioner, in order to harmonize with the design of the room, the plane shape of the decorative panel is formed in a rectangular shape, and the indoor outlet is on the opposite long side It is provided along.
　特許文献１には、このような２方向吹出式の天井埋込型空気調和機の従来例が開示されている。この従来例を、図９を参照しながら説明する。図９に示すように、空気調和機は、長方形の平面形状を有する直方体状の製品本体１０１と、製品本体１０１に内蔵された熱交換器１０２及びターボファン１０３とを備える。熱交換器１０２は、通常二つの分岐熱交換器１０４により構成されている。二つの分岐熱交換器１０４は、それぞれ製品本体１０１の長手方向に延びる側壁の内側に配置される。ターボファン１０３は、二つの分岐熱交換器１０４の間に挟まれている。ターボファン１０３は、製品本体１０１の長手方向に延びる中心線１０５上に概ね配置されている。二つの分岐熱交換器１０４は、平面的に見て、製品本体１０１の長手方向の中央部で鈍角を成すように湾曲しており、二つの鈍角は中心線１０５を挟んで互いに対向している。このように熱交換器１０２を湾曲させることで、分岐熱交換器１０４の長手方向の全長が増大し、熱交換器１０２の熱交換面積が大きくなる。 Patent Document 1 discloses a conventional example of such a two-way blowing type ceiling-embedded air conditioner. This conventional example will be described with reference to FIG. As shown in FIG. 9, the air conditioner includes a rectangular parallelepiped product body 101 having a rectangular planar shape, and a heat exchanger 102 and a turbo fan 103 built in the product body 101. The heat exchanger 102 is usually composed of two branch heat exchangers 104. The two branch heat exchangers 104 are respectively disposed inside the side walls extending in the longitudinal direction of the product main body 101. The turbo fan 103 is sandwiched between two branch heat exchangers 104. The turbo fan 103 is generally disposed on a center line 105 extending in the longitudinal direction of the product main body 101. The two branch heat exchangers 104 are curved so as to form an obtuse angle at the center in the longitudinal direction of the product main body 101 when viewed in plan, and the two obtuse angles are opposed to each other with the center line 105 interposed therebetween. . By curving the heat exchanger 102 in this way, the overall length in the longitudinal direction of the branch heat exchanger 104 is increased, and the heat exchange area of the heat exchanger 102 is increased.
特開２００３－２８７２３９号公報JP 2003-287239 A
　しかしながら、熱交換器１０２の熱交換面積を大きくするという観点からみると、なお改善の余地があった。すなわち、上記従来の空気調和機において、二つの分岐熱交換器１０４の形状を変更することにより、分岐熱交換器１０４の長手方向の全長をより長くすることができる。分岐熱交換器１０４の長手方向の全長を長くして熱交換面積を増加させる場合、生産性を低下させないように、分岐熱交換器の形状及び構造を設計することが肝要である。 However, from the viewpoint of increasing the heat exchange area of the heat exchanger 102, there is still room for improvement. That is, in the conventional air conditioner, the overall length in the longitudinal direction of the branch heat exchanger 104 can be further increased by changing the shape of the two branch heat exchangers 104. When the length of the branch heat exchanger 104 in the longitudinal direction is increased to increase the heat exchange area, it is important to design the shape and structure of the branch heat exchanger so as not to reduce the productivity.
　本発明の目的は、生産性を維持し、かつ、熱交換器の熱交換面積の大きい２方向吹出式の天井埋込型空気調和機を提供することにある。 An object of the present invention is to provide a two-way blowing type ceiling-embedded air conditioner that maintains productivity and has a large heat exchange area of the heat exchanger.
　上記の目的を達成するために、本発明の第一の態様によれば、室内へ温度調節された空気を吹き出す室内吹出口及び室内空気を吸い込む室内吸込口を備えた化粧パネルと、送風機及び熱交換器を内蔵した直方体状の製品本体とを備えた、長方形の平面形状を有する２方向吹出し式の天井埋込型空気調和機が提供される。前記化粧パネル内には、対向する二つの長辺に沿って２個の前記室内吹出口が形成される。前記送風機は、回転軸が鉛直方向を向くように前記製品本体内に配置された遠心送風機である。前記熱交換器は、平面的に見て、前記２個の室内吹出口と前記送風機との間に、前記送風機を挟むように配置された２個の分岐熱交換器からなる。前記２個の分岐熱交換器は、長手方向に沿って、第１端部、中間部、及び第２端部に区分される。前記第１端部では、前記分岐熱交換器の冷媒通路に当該分岐熱交換器の外部の冷媒配管が接続され、前記第２端部では、前記冷媒通路が折り返されている。前記中間部は、前記室内吹出口と平行に配置される。前記第１端部と前記第２端部とはそれぞれ前記送風機に向けて折曲され、かつ、前記第１端部及び前記第２端部は、前記中間部に対し異なる角度で折曲されている。 In order to achieve the above object, according to a first aspect of the present invention, a decorative panel having an indoor outlet for blowing out temperature-controlled air into the room and an indoor inlet for sucking in indoor air, a blower and heat Provided is a two-way blow-out type ceiling-embedded air conditioner having a rectangular plane shape, which includes a rectangular parallelepiped product main body with a built-in exchanger. In the decorative panel, two indoor outlets are formed along two opposing long sides. The blower is a centrifugal blower arranged in the product main body so that the rotation axis faces the vertical direction. The heat exchanger includes two branch heat exchangers arranged so as to sandwich the blower between the two indoor outlets and the blower when viewed in a plan view. The two branch heat exchangers are divided into a first end portion, an intermediate portion, and a second end portion along the longitudinal direction. At the first end, a refrigerant pipe outside the branch heat exchanger is connected to the refrigerant passage of the branch heat exchanger, and the refrigerant passage is folded at the second end. The intermediate portion is disposed in parallel with the indoor outlet. The first end and the second end are each bent toward the blower, and the first end and the second end are bent at different angles with respect to the intermediate portion. Yes.
　上記構成によれば、各分岐熱交換器の両端部は送風機に向けて折曲されている。このため、前述の従来の２方向吹出し式の天井埋込型空気調和機と比較して分岐熱交換器の長手方向の全長を長くし、これにより各分岐熱交換器の熱交換面積を増加させることができる。また、製品本体の寸法、分岐熱交換器を曲げるために用いられるベンダーの掴み代と分岐熱交換器の両端部の折曲長さとの関係、分岐熱交換器に対する配管接続作業の利便性などを考慮して、分岐熱交換器の中間部に対する両端部の折曲角度を任意に設定することができる。これにより、分岐熱交換器の製作上の弊害を回避することができる。 According to the above configuration, both ends of each branch heat exchanger are bent toward the blower. For this reason, compared with the above-described conventional two-way blowing type ceiling-embedded air conditioner, the total length in the longitudinal direction of the branch heat exchanger is increased, thereby increasing the heat exchange area of each branch heat exchanger. be able to. In addition, the dimensions of the product body, the relationship between the gripping margin of the bender used to bend the branch heat exchanger and the bending length of both ends of the branch heat exchanger, the convenience of pipe connection work to the branch heat exchanger, etc. Considering this, it is possible to arbitrarily set the bending angle of both end portions with respect to the intermediate portion of the branch heat exchanger. Thereby, the bad effect on manufacture of a branch heat exchanger can be avoided.
　上記の天井埋込型空気調和機において、前記分岐熱交換器の中間部の長手方向における延長線に対する前記第１端部の折曲角度は、４５度以下であることが好ましい。 In the ceiling-embedded air conditioner, the bending angle of the first end portion with respect to an extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is preferably 45 degrees or less.
　上記構成によれば、両分岐熱交換器へ分流管を接続するロウ付け作業が容易になる。その理由は、ロウ付け作業が次のように行われるからである。先ず、二つの分岐熱交換器を、ロウ付け治具を用いて仮組みする。そして、何れか一方の分岐熱交換器において配管のロウ付けを行い、次いで他方の分岐熱交換器において配管のロウ付けを行う。この時、ロウ付けされる配管が鉛直方向を向くように、仮組みされた分岐熱交換器を位置決めする必要がある。例えば、２個の分岐熱交換器の第１端部において分流管を接続する場合、２個の分岐熱交換器のそれぞれについて、第１端部において突出する熱交換チューブの端部が鉛直方向を向くように、仮組みされた分岐熱交換器をロウ付け治具とともに再配置する必要がある。この時、分岐熱交換器の中間部の長手方向における延長線に対する第１端部の折曲角度が４５度以下であることにより、ロウ付け治具の再配置に必要な角度変更が小さくなるので、この位置決め作業が容易になる。また、配管が接続された一方の分岐熱交換器により、他方の分岐熱交換器におけるロウ付け作業が阻害されることも少なくなる。 According to the above configuration, the brazing operation for connecting the shunt pipe to both branch heat exchangers becomes easy. The reason is that the brazing operation is performed as follows. First, two branch heat exchangers are temporarily assembled using a brazing jig. Then, the pipe is brazed in one of the branch heat exchangers, and then the pipe is brazed in the other branch heat exchanger. At this time, it is necessary to position the temporarily assembled branch heat exchanger so that the pipe to be brazed faces in the vertical direction. For example, when connecting a shunt pipe at the first end of two branch heat exchangers, the end of the heat exchange tube protruding at the first end of each of the two branch heat exchangers is in the vertical direction. It is necessary to rearrange the temporarily assembled branch heat exchanger together with the brazing jig so as to face. At this time, since the bending angle of the first end portion with respect to the extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is 45 degrees or less, the angle change necessary for the rearrangement of the brazing jig is reduced. This positioning operation becomes easy. Further, the brazing operation in the other branch heat exchanger is less likely to be hindered by the one branch heat exchanger to which the pipe is connected.
　上記の天井埋込型空気調和機において、前記分岐熱交換器の中間部の長手方向における延長線に対する前記第２端部の折曲角度は、前記中間部の長手方向における延長線に対する前記第１端部の折曲角度よりも大きいことが好ましい。 In the ceiling-embedded air conditioner, the bending angle of the second end portion with respect to the extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is the first bending angle relative to the extension line in the longitudinal direction of the intermediate portion. It is preferable that it is larger than the bending angle at the end.
　上記構成によれば、分岐熱交換器の長手方向の全長をより長くすることができる。これにより分岐熱交換器の熱交換面積を増加させることができ、したがって、熱交換器の熱交換面積を増加させることができる。 According to the above configuration, the overall length in the longitudinal direction of the branch heat exchanger can be made longer. As a result, the heat exchange area of the branch heat exchanger can be increased, and therefore the heat exchange area of the heat exchanger can be increased.
　上記の天井埋込型空気調和機において、前記分岐熱交換器の前記第１端部には、分流器からの分流管が接続されることが好ましい。この分流管は、平面的に見て、前記２個の分岐熱交換器の前記第１端部における前記製品本体の長手方向の最外側位置同士を結ぶ最外側直線と、前記２個の分岐熱交換器の第１端部における空気通過部の第１端部側の端縁から対向する分岐熱交換器側へ、空気通過面に対し直角に引き出された二つの引出線とにより形成される略三角形の領域内に配列されることが好ましい。分岐熱交換器の第１端部の複数個所には、分岐熱交換器の冷媒通路を所定の長さ及び配列に設定するために、冷媒通路を連絡する連絡配管が取り付けられている。そのため、熱交換器に係る最外側直線を、対向する二つの分岐熱交換器におけるこのような連絡配管の最外側位置同士を結ぶ線と定義する。 In the above-described ceiling-embedded air conditioner, it is preferable that a shunt pipe from a shunt is connected to the first end of the branch heat exchanger. The shunt tube has an outermost straight line connecting the outermost positions in the longitudinal direction of the product main body at the first ends of the two branch heat exchangers and the two branch heats when viewed in plan. Approximately formed by two lead lines drawn at right angles to the air passage surface from the end of the first end portion of the exchanger on the first end side of the air passage portion to the opposing branch heat exchanger side. It is preferably arranged in a triangular area. In order to set the refrigerant passages of the branch heat exchanger to a predetermined length and arrangement, connecting pipes that connect the refrigerant passages are attached to a plurality of locations at the first end of the branch heat exchanger. Therefore, the outermost straight line related to the heat exchanger is defined as a line connecting the outermost positions of such connecting pipes in the two opposing branch heat exchangers.
　上記構成によれば、分流器からの分流管は、平面的に見て、前記最外側直線と、両分岐熱交換器の第１端部の端面を対向する分岐熱交換器側に延長した二つの延長線とから形成される三角形の領域内に配列されている。このため、分流管の束が分岐熱交換器を通過する空気の流れを阻害することがない。また、分流器からの分流管は、平面的に見て、両分岐熱交換器４１の前記第１端部における製品本体の長手方向の最外側位置同士を結ぶ最外側直線から、長手方向の外側に突出しないように配列されている。このため、この空気調和機をコンパクトに形成することができる。 According to the above configuration, the shunt pipe from the shunt has a two-sided extension of the outermost straight line and the end surfaces of the first end portions of the two branch heat exchangers facing each other in the plan view. Are arranged in a triangular area formed by two extension lines. For this reason, the bundle | flux of a shunt tube does not inhibit the flow of the air which passes a branch heat exchanger. Further, the shunt pipe from the shunt is viewed from above in the longitudinal direction from the outermost straight line connecting the outermost positions in the longitudinal direction of the product main body at the first ends of both branch heat exchangers 41. Are arranged so as not to protrude. For this reason, this air conditioner can be formed compactly.
　上記の天井埋込型空気調和機において、前記熱交換器は、前記２個の分岐熱交換器から導出される複数の冷媒出口管が一つのヘッダーに接続されるように構成されていることが好ましい。 In the above-described ceiling-embedded air conditioner, the heat exchanger is configured such that a plurality of refrigerant outlet pipes led out from the two branch heat exchangers are connected to one header. preferable.
　上記構成によれば、本来的には２個の分岐熱交換器それぞれに要するヘッダーを一つで済ませることができる。したがって、ヘッダーに要するスペースを最小化することができ、空気調和機をコンパクトに形成することができる。 According to the above configuration, essentially one header for each of the two branch heat exchangers can be used. Therefore, the space required for the header can be minimized, and the air conditioner can be formed compactly.
　上記の天井埋込型空気調和機において、前記送風機は、前記製品本体の長手方向において前記第２端部側に偏って配置されていることが好ましい。
上記構成によれば、送風機と前記第２端部との間のスペースよりも、送風機と前記第１端部との間のスペースを大きくすることができる。この大きい方のスペースは、電装品箱と電気部品との間の接続配線のためのスペースなどに活用することができる。特に、前記第１端部の近くには、ドレンポンプなどの電気部品が接続されることが多い。このため、送風機と前記第１端部との間のスペースが大きいことは、これら電気部品の接続に有利である。 In the above-described ceiling-embedded air conditioner, it is preferable that the blower is arranged to be biased toward the second end in the longitudinal direction of the product main body.
According to the above configuration, the space between the blower and the first end can be made larger than the space between the blower and the second end. This larger space can be used as a space for connection wiring between the electrical component box and the electrical component. In particular, an electrical component such as a drain pump is often connected near the first end. For this reason, it is advantageous for the connection of these electric components that the space between an air blower and the said 1st edge part is large.
　上記の天井埋込型空気調和機において、前記送風機は、前記製品本体の長手方向に一定の間隔をおいて２個配設され、これら二つの送風機の中間点が前記第２端部側に偏って配置されていることが好ましい。 In the above-described ceiling-embedded air conditioner, two of the blowers are disposed at regular intervals in the longitudinal direction of the product main body, and an intermediate point between the two blowers is biased toward the second end portion. Are preferably arranged.
　上記構成によれば、２個の送風機は製品本体内において前記第２端部に偏って配置されている。このため、２個のうちの一方の送風機と前記第２端部との間のスペースよりも、２個のうちの他方の送風機と前記第１端部との間のスペースを大きくすることができる。この大きい方のスペースは、電装品箱と電気部品との間の接続配線のためのスペースなどに有効活用することができる。特に、前記第１端部の近くに配置されることが多いドレンポンプなどの電気部品の接続に便利である。 According to the above configuration, the two blowers are arranged in the product main body so as to be biased toward the second end portion. For this reason, the space between the other blower of the two and the first end can be made larger than the space between the blower of the two and the second end. . This larger space can be effectively used as a space for connection wiring between the electrical component box and the electrical component. In particular, it is convenient for connecting an electrical component such as a drain pump that is often disposed near the first end.
　本発明によれば、従来の２方向吹出し式の天井埋込型空気調和機と比較して分岐熱交換器の長手方向の全長を長くし、これにより各分岐熱交換器の熱交換面積を増加させることができる。また、折曲された分岐熱交換器の両端部の折曲角度を異ならせているので、製品本体の寸法、分岐熱交換器のベンダーの掴み代と分岐熱交換器の両端部の折曲長さとの関係、分岐熱交換器に対する配管接続作業の利便性などを考慮して、両端部の前記中間部に対する折曲角度を任意に設定することができる。これにより、分岐熱交換器の製作上の弊害を回避することができる。 According to the present invention, the overall length in the longitudinal direction of the branch heat exchanger is increased as compared with the conventional two-way blowing type ceiling embedded air conditioner, thereby increasing the heat exchange area of each branch heat exchanger. Can be made. In addition, the bending angle at both ends of the bent branch heat exchanger is different, so the dimensions of the product body, the gripping amount of the branch heat exchanger bender, and the bending length at both ends of the branch heat exchanger The bending angle of the both end portions with respect to the intermediate portion can be arbitrarily set in consideration of the relationship between the two and the convenience of piping connection work to the branch heat exchanger. Thereby, the bad effect on manufacture of a branch heat exchanger can be avoided.
本発明の実施の形態１に係る２方向吹出式の天井埋込型空気調和機の外観斜視図である。1 is an external perspective view of a two-way blowing type ceiling-embedded air conditioner according to Embodiment 1 of the present invention. 図１の天井埋込型空気調和機における製品本体の内部の機器配置を示した平断面図である。It is the plane sectional view which showed apparatus arrangement | positioning inside the product main body in the ceiling-embedded air conditioner of FIG. 図１の天井埋込型空気調和機の内部の機器配置を示した側断面図である。It is the sectional side view which showed the apparatus arrangement | positioning inside the ceiling-embedded air conditioner of FIG. 図１の天井埋込型空気調和機における熱交換器の、配管を接続する側の端部の拡大図である。It is an enlarged view of the edge part of the side which connects piping of the heat exchanger in the ceiling-embedded air conditioner of FIG. 図４におけるＶ矢視図である。FIG. 5 is a view taken in the direction of arrow V in FIG. 4. 熱交換器をロウ付け治具に取り付けた状態を示す斜視図である。It is a perspective view which shows the state which attached the heat exchanger to the brazing jig. 図６の熱交換器における外部の冷媒配管を接続する側の第１端部をロウ付けする場合の状態説明図である。It is a state explanatory view in the case of brazing the 1st end part by the side which connects external refrigerant piping in the heat exchanger of Drawing 6. 本発明の実施の形態２に係る２方向吹出式の天井埋込型空気調和機における製品本体の内部の機器配置を示した平断面図である。It is the plane sectional view which showed apparatus arrangement | positioning inside the product main body in the two-way blowing type ceiling-embedded air conditioner which concerns on Embodiment 2 of this invention. 従来例に係る２方向吹出式の天井埋込型空気調和機における製品本体の内部の機器配置を示した平断面図である。It is the plane sectional view which showed the apparatus arrangement | positioning inside the product main body in the two-way blowing type ceiling embedded type air conditioner which concerns on a prior art example.
　（実施の形態１）
　以下、図１～図７を参照しながら、本発明の実施の形態１について説明する。 (Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
　実施の形態１に係る２方向吹出式の天井埋込型空気調和機は、分離型空調機における室内ユニットを構成する。 The two-way blowing type ceiling-embedded air conditioner according to Embodiment 1 constitutes an indoor unit in a separate air conditioner.
　この２方向吹出式の天井埋込型空気調和機は、図１及び図３に示すように、長方形の平面形状を有し、化粧パネル１０と、この化粧パネル１０の上面に連結される製品本体２０とから構成されている。化粧パネル１０は、製品本体２０の下方に取り付けられるとともに天井材１（図３参照）に係止され、製品本体２０は、天井裏の建築構造部材（図示略）から吊り下げられるように建築構造部材に取り付けられている。化粧パネル１０及び製品本体２０は双方とも長方形の平面形状を有するが、従来のものと同様に、製品本体２０のほうがやや小さい。 As shown in FIGS. 1 and 3, the two-way blowing type ceiling-embedded air conditioner has a rectangular planar shape, and is connected to the decorative panel 10 and the upper surface of the decorative panel 10. 20. The decorative panel 10 is attached to the lower side of the product main body 20 and is locked to the ceiling material 1 (see FIG. 3), and the product main body 20 is suspended from a building structural member (not shown) on the back of the ceiling. It is attached to the member. Both the decorative panel 10 and the product main body 20 have a rectangular planar shape, but the product main body 20 is slightly smaller like the conventional one.
　化粧パネル１０には、図１及び図３に示すように、対向する二つの長辺に沿って、温度調節された空気を室内へ吹き出す室内吹出口１１が形成されている。化粧パネル１０には、この室内吹出口１１よりも内側に、室内空気を吸い込む細長の室内吸込口１２が形成されている。 As shown in FIGS. 1 and 3, the decorative panel 10 is formed with an indoor outlet 11 that blows out temperature-controlled air into the room along two opposing long sides. The decorative panel 10 is formed with an elongated indoor inlet 12 for taking in indoor air inside the indoor outlet 11.
　製品本体２０は、図２に示すように、直方体状の箱形の本体ケーシング２１、その本体ケーシング２１に内蔵された送風機３０及び熱交換器４０を備える。 2, the product main body 20 includes a rectangular parallelepiped box-shaped main body casing 21, a blower 30 and a heat exchanger 40 built in the main body casing 21.
　送風機３０は、回転軸が鉛直方向を向くように製品本体２０内に配置された遠心送風機、より具体的にはターボファンである。送風機３０は、図２に示すように、平面的に見て製品本体２０の長手方向に延びる中心線ＣＬ上に回転軸が位置するように配置されている。送風機３０は、本体ケーシング２１の天板に取り付けられた駆動モータ３２により、図２に矢印で示す時計方向に回転されるように構成されている。図３に示すように、送風機３０の下面はシュラウド３３によって画定される。送風機３０は、シュラウド３３の内周側の開口部から空気を吸い込み、羽根車３１の外周から昇圧した空気を吹き出すように構成されている。送風機３０は、シュラウド３３の内周側の開口部に連通するベルマウス３４を有する。ベルマウス３４は、製品本体２０内の下部に配置されたエアフィルタ２２を介して、化粧パネル１０とエアフィルタ２２との間の内部空間１３及び室内吸込口１２に連通するように構成されている。 The blower 30 is a centrifugal blower, more specifically a turbo fan, disposed in the product main body 20 so that the rotation axis faces the vertical direction. As shown in FIG. 2, the blower 30 is arranged such that the rotation axis is positioned on a center line CL extending in the longitudinal direction of the product main body 20 when viewed in plan. The blower 30 is configured to be rotated in a clockwise direction indicated by an arrow in FIG. 2 by a drive motor 32 attached to the top plate of the main body casing 21. As shown in FIG. 3, the lower surface of the blower 30 is defined by a shroud 33. The blower 30 is configured to suck air from the opening on the inner peripheral side of the shroud 33 and blow out the pressurized air from the outer periphery of the impeller 31. The blower 30 has a bell mouth 34 that communicates with the inner peripheral opening of the shroud 33. The bell mouth 34 is configured to communicate with the internal space 13 and the indoor suction port 12 between the decorative panel 10 and the air filter 22 via the air filter 22 disposed in the lower part of the product main body 20. .
　熱交換器４０は、平面的に見て、２個の室内吹出口１１と送風機３０との間に配置される２個の分岐熱交換器４１から構成されている。各分岐熱交換器４１は、送風機３０の吹出側に配置されている。 The heat exchanger 40 is composed of two branch heat exchangers 41 disposed between the two indoor outlets 11 and the blower 30 when viewed in plan. Each branch heat exchanger 41 is arranged on the outlet side of the blower 30.
　分岐熱交換器４１は、冷媒通路を構成するＵ字形の熱交換チューブ４２（図４参照）に対しプレートフィン４３が取り付けられたプレートフィンコイルである。各分岐熱交換器４１は、図４及び図５から分かるようにそれぞれ２列１６段であって、各分岐熱交換器４１のそれぞれが７パスの冷媒通路を有する。 The branch heat exchanger 41 is a plate fin coil in which a plate fin 43 is attached to a U-shaped heat exchange tube 42 (see FIG. 4) constituting the refrigerant passage. As can be seen from FIGS. 4 and 5, each branch heat exchanger 41 has two rows and sixteen stages, and each branch heat exchanger 41 has a seven-pass refrigerant passage.
　図２の平断面図に示すように、分岐熱交換器４１の中間部４１ａは、室内吹出口１１と平行に配置され、分岐熱交換器４１の両端部は送風機３０に向けて、換言すると中心線ＣＬに向けて、折曲されている。以下の説明では、外部の冷媒配管が接続される側の分岐熱交換器４１の端部を第１端部４１ｂとし、第１端部４１ｂの反対側の、分岐熱交換器４１における冷媒通路が折り返される側の端部を第２端部４１ｃとする。このように各分岐熱交換器４１は、送風機３０に向けて折曲された第１端部４１ｂと、中間部４１ａと、送風機３０に向けて折曲された第２端部４１ｃとに区分されている。 As shown in the plane sectional view of FIG. 2, the intermediate portion 41 a of the branch heat exchanger 41 is disposed in parallel with the indoor outlet 11, and both ends of the branch heat exchanger 41 are directed toward the blower 30, in other words, the center. It is bent toward the line CL. In the following description, the end of the branch heat exchanger 41 on the side to which the external refrigerant pipe is connected is referred to as a first end 41b, and the refrigerant passage in the branch heat exchanger 41 on the opposite side of the first end 41b is The end on the folded side is defined as a second end 41c. As described above, each branch heat exchanger 41 is divided into the first end portion 41 b bent toward the blower 30, the intermediate portion 41 a, and the second end portion 41 c bent toward the blower 30. ing.
　中間部４１ａの長手方向における延長線に対する第１端部４１ｂの折曲角度α、及び、中間部４１ａの長手方向における延長線に対する第２端部４１ｃの折曲角度βは、分岐熱交換器４１の長手方向の全長を長くする意味では９０度が好ましい。しかしながら、製作上要求される条件を満たすために、折曲角度α及びβは９０度より小さく、かつ互いに異なる角度に設定されている。 The bending angle α of the first end portion 41b with respect to the extension line in the longitudinal direction of the intermediate portion 41a and the bending angle β of the second end portion 41c with respect to the extension line in the longitudinal direction of the intermediate portion 41a are the branch heat exchanger 41. In order to increase the total length in the longitudinal direction, 90 degrees is preferable. However, in order to satisfy the conditions required for manufacturing, the bending angles α and β are set to be smaller than 90 degrees and different from each other.
　分岐熱交換器４１の第１端部４１ｂの折曲角度αは、熱交換チューブ４２への配管のロウ付け作業を容易にするために約４５度に設定されている。この折曲角度αは、中間部４１ａが中心線ＣＬと略平行に配置されているため、中心線ＣＬに対する第１端部４１ｂの延長線との角度と同じである。 The bending angle α of the first end 41b of the branch heat exchanger 41 is set to about 45 degrees in order to facilitate the work of brazing the pipe to the heat exchange tube 42. The bending angle α is the same as the angle with the extension line of the first end portion 41b with respect to the center line CL because the intermediate portion 41a is disposed substantially parallel to the center line CL.
　分岐熱交換器４１の第２端部４１ｃの折曲角度βは、折曲された第２端部４１ｃの長さが第２端部４１ｃを曲げるために用いられるベンダーの掴み代に必要な長さ以上となり、かつ、第２端部４１ｃが中間部４１ａの長手方向における延長線に対し最大の角度となるように設定されている。この実施の形態においては、第２端部４１ｃの折曲角度βは約６０度である。前述の折曲された第１端部４１ｂの折曲角度αは４５度であるので、第１端部４１ｂはベンダーの掴み代に必要な長さを十分に備えている。第２端部４１ｃの折曲角度βは、中間部４１ａが中心線ＣＬと略平行に配置されているため、中心線ＣＬに対する第２端部４１ｃの延長線との角度と同じである。 The bending angle β of the second end portion 41c of the branch heat exchanger 41 is a length necessary for the gripping margin of the bender used for bending the second end portion 41c when the bent second end portion 41c is bent. And the second end portion 41c is set to have a maximum angle with respect to an extension line in the longitudinal direction of the intermediate portion 41a. In this embodiment, the bending angle β of the second end portion 41c is about 60 degrees. Since the bending angle α of the bent first end portion 41b is 45 degrees, the first end portion 41b has a sufficient length necessary for the gripping margin of the bender. The bending angle β of the second end portion 41c is the same as the angle of the extension line of the second end portion 41c with respect to the center line CL because the intermediate portion 41a is disposed substantially parallel to the center line CL.
　製品本体２０は、熱交換器４０の下方にドレンパン５０を備えている。 The product body 20 includes a drain pan 50 below the heat exchanger 40.
　分岐熱交換器４１の直下のドレンパン５０の部分には、分岐熱交換器４１からのドレン水を受けるための溝部５１が形成されている。ドレンパン５０は、送風機３０の吹出側と吸込側とを仕切る仕切り部材としても機能する。この仕切り部材として機能するドレンパン５０の部分を、この明細書では仕切部５２と称する。ただし、仕切部５２には、図３に示すように、エアフィルタ２２とベルマウス３４とが連通するように、ベルマウス３４が取り付けられる部分において丸穴５３が形成されている。図２及び図３に示すように、分岐熱交換器４１と側壁との間の空間の下方において、仕切部５２には、化粧パネル１０の室内吹出口１１に連通するように細長の角穴５４が形成されている。 A groove 51 for receiving drain water from the branch heat exchanger 41 is formed in a portion of the drain pan 50 immediately below the branch heat exchanger 41. The drain pan 50 also functions as a partition member that partitions the blowing side and the suction side of the blower 30. The portion of the drain pan 50 that functions as the partition member is referred to as a partition portion 52 in this specification. However, as shown in FIG. 3, the partition 52 is formed with a round hole 53 at a portion where the bell mouth 34 is attached so that the air filter 22 and the bell mouth 34 communicate with each other. As shown in FIGS. 2 and 3, below the space between the branch heat exchanger 41 and the side wall, the partition 52 has an elongated square hole 54 that communicates with the indoor outlet 11 of the decorative panel 10. Is formed.
　次に、分岐熱交換器４１の第１端部４１ｂ付近の構成についてさらに説明する。 Next, the configuration in the vicinity of the first end 41b of the branch heat exchanger 41 will be further described.
　分岐熱交換器４１の第１端部４１ｂ付近には、図２に示すように、熱交換器４０の外部の冷媒回路を構成する機器、室外ユニット（図示略）との冷媒配管接続に関連する機器、ドレン水を排出するための機器などが配置されている。具体的には、熱交換器４０の第１端部４１ｂの付近に、室外ユニットから搬送されてくる液冷媒を分流するための分流器６１、分流器６１で分流された冷媒を各分岐熱交換器４１に搬送するための複数の分流管６２、分岐熱交換器４１からガス冷媒を流出させるための複数の冷媒出口管６３、冷媒出口管６３を集合するためのヘッダー６４が配置されている。また、室外ユニットとの連絡配管（図示略）を接続するための、液冷媒管継手６５及びガス冷媒管継手６６が本体ケーシング２１の側板に取り付けられている。さらに、ドレンパン５０の貯留部に貯留されるドレン水のレベルを検出するレベルセンサ６７、溜まったドレン水を汲み出すためのドレンポンプ６８、ドレンポンプ６８により汲み出されるドレン水を排出するための排出管６８ａ、これを外部の排水管に接続するための管継手６９などが配置されている。 As shown in FIG. 2, in the vicinity of the first end 41 b of the branch heat exchanger 41, it is related to the refrigerant pipe connection with the equipment constituting the refrigerant circuit outside the heat exchanger 40 and the outdoor unit (not shown). Equipment, equipment for discharging drain water, etc. are arranged. Specifically, in the vicinity of the first end portion 41b of the heat exchanger 40, a branching device 61 for branching the liquid refrigerant transported from the outdoor unit, and the branching heat exchange of the refrigerant branched by the branching device 61 A plurality of branch pipes 62 for transporting to the vessel 41, a plurality of refrigerant outlet pipes 63 for letting out the gas refrigerant from the branch heat exchanger 41, and a header 64 for collecting the refrigerant outlet pipes 63 are arranged. Further, a liquid refrigerant pipe joint 65 and a gas refrigerant pipe joint 66 for connecting a communication pipe (not shown) with the outdoor unit are attached to the side plate of the main body casing 21. Furthermore, a level sensor 67 for detecting the level of drain water stored in the storage part of the drain pan 50, a drain pump 68 for pumping up the accumulated drain water, and discharge for discharging the drain water pumped out by the drain pump 68 A pipe 68a and a pipe joint 69 for connecting the pipe 68a to an external drain pipe are disposed.
　各分岐熱交換器４１には７パスの冷媒通路が形成されているため、分流器６１からそれぞれの分岐熱交換器４１に対し７本の分流管６２が接続されている。分流管６２は、平面的に見て、両分岐熱交換器４１の前記第１端部４１ｂにおける製品本体２０の長手方向の最外側位置同士を結ぶ最外側直線４５と、両分岐熱交換器４１から引き出された二つの引出線４６，４７とにより形成される略三角形の領域内に配列されている。 Since each branch heat exchanger 41 is formed with a seven-pass refrigerant passage, seven branch pipes 62 are connected from each branch 61 to each branch heat exchanger 41. The shunt pipe 62 is, when viewed in plan, the outermost straight line 45 connecting the outermost positions in the longitudinal direction of the product main body 20 at the first end portion 41 b of the two branch heat exchangers 41, and the two branch heat exchangers 41. Are arranged in a substantially triangular region formed by two lead lines 46 and 47 led out from.
　分岐熱交換器４１の第１端部４１ｂの複数個所には、分岐熱交換器４１における冷媒通路を所定の長さ及び配列に設定するために、冷媒通路を連絡する連絡配管が取り付けられている。そのため、熱交換器４０に係る最外側直線４５を、対向する二つの分岐熱交換器４１におけるこのような連絡配管の最外側位置同士を結ぶ線と定義する。より具体的に述べると、分岐熱交換器４１の第１端部４１ｂの複数個所には、冷媒通路を所定の長さ及び配列に設定するために、冷媒通路を構成する熱交換チューブ４２間を連絡するＵ字形の曲げ管４８が取り付けられている。熱交換器４０に係る最外側直線４５は、この曲げ管４８の最外側に位置する点同士を結んだ線を意味する。 At a plurality of locations of the first end 41b of the branch heat exchanger 41, connecting pipes that connect the refrigerant passages are attached in order to set the refrigerant passages in the branch heat exchanger 41 to a predetermined length and arrangement. . Therefore, the outermost straight line 45 related to the heat exchanger 40 is defined as a line connecting the outermost positions of such connecting pipes in the two branch heat exchangers 41 facing each other. More specifically, a plurality of locations of the first end 41b of the branch heat exchanger 41 are provided between the heat exchange tubes 42 constituting the refrigerant passage in order to set the refrigerant passage to a predetermined length and arrangement. A communicating U-shaped bending tube 48 is attached. The outermost straight line 45 related to the heat exchanger 40 means a line connecting points located on the outermost side of the bending pipe 48.
　二つの引出線４６，４７は、両分岐熱交換器４１における空気通過部の第１端部４１ｂ側の端縁から対向する分岐熱交換器４１側へ、空気通過面に対し直角に引き出された線である。この実施の形態において、空気通過部の第１端部４１ｂ側の端縁は、分岐熱交換器４１における第１端部４１ｂ側の管板４１ｄに相当する。したがって、より具体的には、引出線４６，４７は、この管板４１ｄの表面を延長した線を意味する。 The two lead wires 46 and 47 are led out at right angles to the air passage surface from the end of the air passage portion on the first end portion 41b side of both the branch heat exchangers 41 to the opposite branch heat exchanger 41 side. Is a line. In this embodiment, the edge of the air passage portion on the first end portion 41 b side corresponds to the tube plate 41 d on the first end portion 41 b side in the branch heat exchanger 41. Therefore, more specifically, the lead lines 46 and 47 mean lines obtained by extending the surface of the tube sheet 41d.
　各分岐熱交換器４１には７パスの冷媒通路が形成されているため、二つの分岐熱交換器４１は、それぞれ７本の冷媒出口管６３を導出するように構成されている。図５に示すように、各分岐熱交換器４１の第１端部４１ｂから延びるこれら冷媒出口管６３の先端は、１個のヘッダー６４に接続されている。本発明において、分岐熱交換器４１における冷媒通路に接続される分岐熱交換器４１の外部の配管とは、分流管６２および冷媒出口管６３を指す。 Since each branch heat exchanger 41 has a seven-pass refrigerant passage, the two branch heat exchangers 41 are configured to lead out seven refrigerant outlet pipes 63, respectively. As shown in FIG. 5, the tips of these refrigerant outlet pipes 63 extending from the first end 41 b of each branch heat exchanger 41 are connected to one header 64. In the present invention, piping outside the branch heat exchanger 41 connected to the refrigerant passage in the branch heat exchanger 41 refers to the branch pipe 62 and the refrigerant outlet pipe 63.
　製品本体２０内においては、送風機３０が分岐熱交換器４１の第1端部４１ｂよりも第２端部４１ｃに近接するように偏って配置されている。これにより、送風機３０と分岐熱交換器４１の第１端部４１ｂとの間のスペースが、送風機３０と分岐熱交換器４１の第２端部４１ｃとの間のスペースよりも大きくなる。この大きい方のスペースにおける仕切部５２の下方には、電装品箱７１が配置されている。分岐熱交換器４１の第１端部４１ｂの付近に配置されている前述のドレンポンプ６８、レベルセンサ６７などの電気部品は、このスペースを利用して電装品箱７１内の電装品に接続されている。 In the product main body 20, the blower 30 is disposed so as to be closer to the second end 41 c than the first end 41 b of the branch heat exchanger 41. Thereby, the space between the air blower 30 and the 1st end part 41b of the branch heat exchanger 41 becomes larger than the space between the air blower 30 and the 2nd end part 41c of the branch heat exchanger 41. FIG. An electrical component box 71 is disposed below the partition portion 52 in the larger space. The electrical components such as the drain pump 68 and the level sensor 67 arranged in the vicinity of the first end portion 41b of the branch heat exchanger 41 are connected to the electrical components in the electrical component box 71 using this space. ing.
　次に、以上のように構成された２方向吹出式の天井埋込型空気調和機の作用について述べる。 Next, the operation of the two-way blowout ceiling embedded air conditioner configured as described above will be described.
　先ず、本実施の形態に係る天井埋込型空気調和機による空調運転について説明する。 First, the air conditioning operation by the ceiling-embedded air conditioner according to the present embodiment will be described.
　この天井埋込型空気調和機による空調運転は、図示しない室外ユニットに搭載された圧縮機と、製品本体２０内に収納された送風機３０とが運転されることにより行われる。空調運転中、室内空気は、図３に白抜き矢印で示されるように流れる。具体的には、室内空気は、室内吸込口１２から吸い込まれ、化粧パネル１０の内部空間１３及びエアフィルタ２２を介して送風機３０に吸い込まれる。送風機３０の外周から吹き出された空気は、対向する二つの分岐熱交換器４１内に分散され、各分岐熱交換器４１を通過することにより温度調節される。そして、温度調節された空気が、ドレンパン５０の側部に形成された細長の角穴５４を介し室内吹出口１１から室内へ吹き出される。 The air conditioning operation by this ceiling-embedded air conditioner is performed by operating a compressor mounted in an outdoor unit (not shown) and a blower 30 housed in the product main body 20. During the air conditioning operation, the room air flows as shown by the white arrow in FIG. Specifically, the indoor air is sucked from the indoor suction port 12 and sucked into the blower 30 through the internal space 13 of the decorative panel 10 and the air filter 22. The air blown out from the outer periphery of the blower 30 is dispersed in the two branch heat exchangers 41 facing each other, and the temperature is adjusted by passing through each branch heat exchanger 41. Then, the temperature-adjusted air is blown into the room from the indoor air outlet 11 through an elongated rectangular hole 54 formed in the side of the drain pan 50.
　この空調運転が冷房運転である場合は、室外ユニット（図示略）から液冷媒管継手６５を介して搬送されてきた液冷媒が、図４に実線矢印で示すように流れ、分流器６１によって各分流管６２内に均等に分流される。分流器６１により分流された液冷媒は、各分流管６２を通って分岐熱交換器４１の各冷媒通路に流れ込む。各冷媒通路を通過する液冷媒は、室内空気と熱交換されて気化し、ガス冷媒となる。ガス冷媒は、冷媒出口管６３を経由してヘッダー６４に集合され、さらにガス冷媒管継手６６を介して室外ユニットに戻される。この空気調和機がヒートポンプ式として構成され、暖房運転される場合は、これと逆の方向に冷媒が流されるが、その詳細についての説明はここでは省略する。 When this air-conditioning operation is a cooling operation, the liquid refrigerant conveyed from the outdoor unit (not shown) through the liquid refrigerant pipe joint 65 flows as shown by solid line arrows in FIG. The flow is evenly divided in the flow dividing pipe 62. The liquid refrigerant branched by the flow divider 61 flows into the refrigerant passages of the branch heat exchanger 41 through the branch pipes 62. The liquid refrigerant passing through each refrigerant passage is vaporized by exchanging heat with room air and becomes a gas refrigerant. The gas refrigerant is collected in the header 64 via the refrigerant outlet pipe 63 and further returned to the outdoor unit via the gas refrigerant pipe joint 66. When this air conditioner is configured as a heat pump type and is operated for heating, the refrigerant flows in the opposite direction, but a detailed description thereof is omitted here.
　このような空調運転における熱交換器の性能は、前述した従来例のものと比較して向上している。その理由は、分岐熱交換器４１の中間部４１ａを室内吹出口１１と平行に配置するとともに、分岐熱交換器４１の第１端部４１ｂ及び第２端部４１ｃを送風機３０に向けて折曲したことにより、製品本体２０に搭載し得る分岐熱交換器４１の長手方向の全長を従来より長くでき、その結果、熱交換器４０の熱交換面積が増大したためである。 The performance of the heat exchanger in such air conditioning operation is improved compared to the conventional example described above. The reason is that the intermediate portion 41a of the branch heat exchanger 41 is arranged in parallel with the indoor outlet 11 and the first end portion 41b and the second end portion 41c of the branch heat exchanger 41 are bent toward the blower 30. This is because the total length in the longitudinal direction of the branch heat exchanger 41 that can be mounted on the product body 20 can be made longer than before, and as a result, the heat exchange area of the heat exchanger 40 is increased.
　次に、上記のように構成される熱交換器４０に対する配管接続作業について述べる。熱交換器４０に対する配管接続作業は、分岐熱交換器４１の第１端部４１ｂにおける熱交換チューブ４２に対する分流管６２及び冷媒出口管６３のロウ付け作業が中心となる。 Next, the pipe connection work for the heat exchanger 40 configured as described above will be described. The pipe connection work for the heat exchanger 40 is centered on the brazing work for the branch pipe 62 and the refrigerant outlet pipe 63 for the heat exchange tube 42 at the first end 41 b of the branch heat exchanger 41.
　図６に示すように、先ず、ロウ付け治具８０を用いて二つの分岐熱交換器４１を製品本体２０に組み込まれるときと同一の姿勢に仮組みする。 As shown in FIG. 6, first, the two branch heat exchangers 41 are temporarily assembled in the same posture as when assembled into the product main body 20 using the brazing jig 80.
　ロウ付け治具８０は、熱交換器４０の４箇所を外側から支持する外側部材８１と、分岐熱交換器４１の中間部４１ａを外側部材８１に押し付ける内側部材８２とにより構成されている。外側部材８１は、図６から分かるように、熱交換器４０の底面を支持する平面支持壁８１ａと、二つの分岐熱交換器４１の中間部４１ａの対向する２箇所を外側から支持する側面支持壁８１ｂと、二つの分岐熱交換器４１の第２端部４１ｃを同時に支持する屈折した形状の端部支持壁８１ｃとからなる。側面支持壁８１ｂ及び端部支持壁８１ｃはそれぞれ平面支持壁８１ａに連結されている。内側部材８２は、中間部４１ａを内側から外側部材８１の側面支持壁８１ｂへ押し付ける押圧壁部８２ａと、この押圧壁部８２ａを外向きに付勢する付勢部材８２ｂとからなる。 The brazing jig 80 includes an outer member 81 that supports the four locations of the heat exchanger 40 from the outside, and an inner member 82 that presses the intermediate portion 41 a of the branch heat exchanger 41 against the outer member 81. As can be seen from FIG. 6, the outer member 81 is a side surface support that supports two opposing portions of the flat support wall 81 a that supports the bottom surface of the heat exchanger 40 and the intermediate portion 41 a of the two branch heat exchangers 41. It consists of a wall 81b and a bent end support wall 81c that supports the second end 41c of the two branch heat exchangers 41 simultaneously. The side support wall 81b and the end support wall 81c are connected to the planar support wall 81a. The inner member 82 includes a pressing wall portion 82a that presses the intermediate portion 41a from the inner side to the side support wall 81b of the outer member 81, and an urging member 82b that urges the pressing wall portion 82a outward.
　このロウ付け治具８０を用いた二つの分岐熱交換器４１の仮組みは、次のように行われる。先ず、分岐熱交換器４１の第２端部４１ｃ同士を連結する。そして、連結した分岐熱交換器４１を図６に示すように製品本体２０に収納されるときと同一の形状を成すように、ロウ付け治具８０の外側部材８１の内側に装着する。次いで、内側部材８２の付勢部材８２ｂを操作し、押圧壁部８２ａを介して分岐熱交換器４１の中間部４１ａを外側部材８１の側面支持壁８１ｂへ押し付ける。これにより、分岐熱交換器４１の中間部４１ａを、外側部材８１の側面支持壁８１ｂと内側部材８２の押圧壁部８２ａとの間で把持する。このようにして、熱交換器４０がロウ付け治具８０によって仮組みされる。 The temporary assembly of the two branch heat exchangers 41 using the brazing jig 80 is performed as follows. First, the second ends 41c of the branch heat exchanger 41 are connected to each other. Then, the connected branch heat exchanger 41 is mounted on the inner side of the outer member 81 of the brazing jig 80 so as to have the same shape as that stored in the product main body 20 as shown in FIG. Next, the urging member 82 b of the inner member 82 is operated to press the intermediate portion 41 a of the branch heat exchanger 41 against the side support wall 81 b of the outer member 81 via the pressing wall portion 82 a. Accordingly, the intermediate portion 41a of the branch heat exchanger 41 is gripped between the side surface support wall 81b of the outer member 81 and the pressing wall portion 82a of the inner member 82. In this way, the heat exchanger 40 is temporarily assembled by the brazing jig 80.
　次に、仮組みされた熱交換器４０の端部をロウ付けする。このロウ付けを容易かつ確実に行うために、最初に一方の分岐熱交換器４１についてロウ付けを行い、次いで、他方の分岐熱交換器４１についてロウ付けを行う。 Next, the end of the temporarily assembled heat exchanger 40 is brazed. In order to perform brazing easily and reliably, brazing is first performed on one branch heat exchanger 41, and then brazing is performed on the other branch heat exchanger 41.
　例えば、図７の左側の図に示すように、先ず、左方の分岐熱交換器４１における第１端部４１ｂの管板４１ｄを水平に保持し、ロウ付けされる熱交換チューブ４２の管軸を鉛直方向に向ける。このようにすれば、左方の分岐熱交換器４１の第１端部４１ｂの熱交換チューブ４２に対し、分流管６２や冷媒出口管６３を容易かつ確実にロウ付けすることができる。そして、左方の分岐熱交換器４１についてのロウ付けが終了した後、図７の右側の図に示すように、仮組みされた熱交換器４０をロウ付け治具８０とともに回転させ、右方の分岐熱交換器４１について、左方の分岐熱交換器４１の場合と同様にロウ付けを行う。 For example, as shown in the diagram on the left side of FIG. 7, first, the tube shaft 41d of the first end 41b in the left branch heat exchanger 41 is held horizontally, and the tube axis of the heat exchange tube 42 to be brazed. Is oriented vertically. In this way, the branch pipe 62 and the refrigerant outlet pipe 63 can be brazed easily and reliably to the heat exchange tube 42 at the first end 41b of the left branch heat exchanger 41. Then, after the brazing of the left branch heat exchanger 41 is completed, the temporarily assembled heat exchanger 40 is rotated together with the brazing jig 80 as shown in the right side of FIG. The branch heat exchanger 41 is brazed as in the case of the left branch heat exchanger 41.
　分岐熱交換器４１の第１端部４１ｂの周りに接続される他の配管や機器についても、製品本体２０に組み込む前にロウ付けしておくべき個所は、このロウ付け治具８０上においてロウ付けするのが便利である。例えば、各分岐熱交換器４１における冷媒出口管６３をヘッダー６４へロウ付けする時は、上記と同様に、ロウ付け個所における冷媒出口管６３の管軸が鉛直方向を向くように、仮組みされた熱交換器４０をロウ付け治具８０とともに回転させてロウ付けを行うことにより、ヘッダー６４に対する冷媒出口管６３のロウ付けを、容易かつ確実に行うことができる。 As for other pipes and devices connected around the first end 41b of the branch heat exchanger 41, the parts to be brazed before being incorporated into the product main body 20 are brazed on the brazing jig 80. It is convenient to attach. For example, when the refrigerant outlet pipe 63 in each branch heat exchanger 41 is brazed to the header 64, it is temporarily assembled so that the pipe axis of the refrigerant outlet pipe 63 in the brazed portion is oriented in the vertical direction. By rotating the heat exchanger 40 together with the brazing jig 80 and brazing, the brazing of the refrigerant outlet pipe 63 to the header 64 can be performed easily and reliably.
　本実施の形態に係る天井埋込型空気調和機は、以上の構成により、次のような効果を奏することができる。 The ceiling-embedded air conditioner according to the present embodiment can achieve the following effects by the above configuration.
　（１）前述の従来の２方向吹出式の天井埋込型空気調和機と比較して分岐熱交換器４１の長手方向の全長を長くし、これにより各分岐熱交換器４１の熱交換面積を増加させることができる。 (1) The overall length in the longitudinal direction of the branch heat exchanger 41 is increased as compared with the above-described conventional two-way blowing type ceiling-embedded air conditioner, thereby increasing the heat exchange area of each branch heat exchanger 41. Can be increased.
　（２）分岐熱交換器４１における第１端部４１ｂの折曲角度αと第２端部４１ｃの折曲角度βとを異ならせている。したがって、製品本体２０の寸法、分岐熱交換器４１の曲げベンダーの掴み代と分岐熱交換器４１の両端部の折曲長さとの関係、分岐熱交換器４１に対する配管接続作業の利便性などを考慮して、これら端部の折曲角度α、βを任意の角度に設定することができる。これにより、分岐熱交換器の製作上の弊害を回避することができる。 (2) The bending angle α of the first end portion 41b and the bending angle β of the second end portion 41c in the branch heat exchanger 41 are made different. Therefore, the dimensions of the product main body 20, the relationship between the bending heat of the bending heat exchanger 41 and the bending length of both ends of the branch heat exchanger 41, the convenience of pipe connection work to the branch heat exchanger 41, etc. Considering this, the bending angles α and β at these ends can be set to arbitrary angles. Thereby, the bad effect on manufacture of a branch heat exchanger can be avoided.
　（３）分岐熱交換器４１の第１端部４１ｂの折曲角度αが４５度以下であるので、前述のように、仮組みされた熱交換器４０を、ロウ付けすべき熱交換チューブ４２の管軸が鉛直方向を向くように位置決めすることが容易になる。これにより、両分岐熱交換器４１へ分流管６２を接続するロウ付け作業が容易になる。 (3) Since the bending angle α of the first end portion 41b of the branch heat exchanger 41 is 45 degrees or less, the temporarily assembled heat exchanger 40 is to be brazed as described above. It is easy to position so that the tube axis is oriented in the vertical direction. Thereby, the brazing operation | work which connects the shunt pipe 62 to both the branch heat exchangers 41 becomes easy.
　（４）分岐熱交換器４１の第２端部４１ｃの折曲角度βが第１端部４１ｂの折曲角度αよりも大きくなるように設定されている。このことは、分岐熱交換器４１の長手方向の全長をできるだけ長くする上において有利である。分岐熱交換器４１の長手方向の全長を長くすることにより、各分岐熱交換器４１の熱交換面積を増加させることができ、したがって熱交換器４０の熱交換面積を増加させることができる。 (4) The bending angle β of the second end 41c of the branch heat exchanger 41 is set to be larger than the bending angle α of the first end 41b. This is advantageous in increasing the overall length of the branch heat exchanger 41 in the longitudinal direction as much as possible. By increasing the overall length of the branch heat exchanger 41 in the longitudinal direction, the heat exchange area of each branch heat exchanger 41 can be increased, and thus the heat exchange area of the heat exchanger 40 can be increased.
　（５）分流器６１からの分流管６２は、両分岐熱交換器４１の第１端部４１ｂにおける製品本体２０の長手方向の最外側位置同士を結ぶ最外側直線４５と、両分岐熱交換器４１の第１端部４１ｂにおける空気通過部の第１端部４１ｂ側の端縁から対向する分岐熱交換器４１側へ、空気通過面に対し直角に引き出された二つの引出線４６，４７とから形成される三角形の領域内に配列されている。したがって、分流管６２の束が分岐熱交換器４１を通過する空気の流れを阻害することがない。 (5) The shunt pipe 62 from the shunt 61 includes an outermost straight line 45 connecting the outermost positions in the longitudinal direction of the product main body 20 at the first end 41b of both the branch heat exchangers 41, and both the branch heat exchangers. Two lead lines 46 and 47 led out at right angles to the air passage surface from the edge of the first end portion 41b of the air passage portion 41 on the first end portion 41b side of the air passage portion 41 to the opposite branch heat exchanger 41 side; Are arranged in a triangular region formed from Therefore, the bundle of the branch pipes 62 does not hinder the air flow passing through the branch heat exchanger 41.
　（６）分流器６１から導出される複数（具体的には１４本）の分流管６２は、平面的に見て、前記最外側直線４５から長手方向の外側に突出しないように配置されている。したがって、この空気調和機をコンパクトに形成することができる。 (6) A plurality (specifically, 14) of the diverter pipes 62 led out from the flow divider 61 are arranged so as not to protrude outward in the longitudinal direction from the outermost straight line 45 in plan view. . Therefore, this air conditioner can be formed compactly.
　（７）両分岐熱交換器４１から導出される複数（具体的には各分岐熱交換器４１につき７本）の冷媒出口管６３が全て一つのヘッダー６４に接続されているので、本来的には二つの分岐熱交換器４１それぞれに要するヘッダー６４を一つで済ませることができる。したがって、ヘッダー６４に要するスペースを最小化することができ、この空気調和機をコンパクトに形成することができる。 (7) Since all of the plurality of refrigerant outlet pipes 63 (specifically, seven for each branch heat exchanger 41) led out from both branch heat exchangers 41 are connected to one header 64, Can use only one header 64 for each of the two branch heat exchangers 41. Therefore, the space required for the header 64 can be minimized, and this air conditioner can be formed compactly.
　（８）送風機３０が製品本体２０内において、分岐熱交換器４１の第２端部４１ｃ側に偏って配置されているので、送風機３０と第２端部４１ｃとの間のスペースよりも送風機３０と第１端部４１ｂとの間のスペースを大きくすることができる。したがって、この大きい方のスペースを、電装品箱７１と電気部品との間の接続配線のためのスペースなどに有効活用することができる。このスペースは、特に、分岐熱交換器４１の第１端部４１ｂの近くに配置されることが多いドレンポンプ６８、レベルセンサ６７などの電気部品の接続に便利である。 (8) Since the blower 30 is disposed in the product main body 20 so as to be biased toward the second end 41c of the branch heat exchanger 41, the blower 30 is more than the space between the blower 30 and the second end 41c. And the space between the first end 41b can be increased. Therefore, this larger space can be effectively used as a space for connection wiring between the electrical component box 71 and the electrical component. This space is particularly convenient for connecting electrical components such as the drain pump 68 and the level sensor 67 that are often arranged near the first end 41b of the branch heat exchanger 41.
　（実施の形態２）
　次に、実施の形態２について図８を参照しながら説明する。実施の形態２に係る２方向吹出式の天井埋込型空気調和機は、実施の形態１と比較して、化粧パネル１０及び製品本体２０の長手方向の寸法を大きくし、送風機３０を２個配置することにより性能を向上させたものである。その他の構成は、実施の形態１と同一である。以下、実施の形態２に係る２方向吹出式の天井埋込型空気調和機について、実施の形態１との相違点を中心に説明する。実施の形態１と同一の構成要素には同一の符号を付し、その説明を省略又は簡略化する。 (Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG. The two-way blowing type ceiling-embedded air conditioner according to the second embodiment is larger in dimensions in the longitudinal direction of the decorative panel 10 and the product body 20 than the first embodiment, and has two fans 30. The performance is improved by arranging. Other configurations are the same as those of the first embodiment. Hereinafter, the two-way blowing-type ceiling-embedded air conditioner according to the second embodiment will be described focusing on differences from the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.
　実施の形態２に係る天井埋込型空気調和機では、上記のように製品本体２０の長手方向の寸法を大きくして性能を向上させるために、本体ケーシング２１、化粧パネル１０、ドレンパン５０の寸法が変更されている。また、製品本体２０の長手方向の寸法の大きさに対応するように、分岐熱交換器４１の長手方向の寸法が実施の形態１に比べて大きくなっている。より具体的には、実施の形態１と比較して、分岐熱交換器４１の中間部４１ａの寸法が大きくなっている。折曲された第１端部４１ｂ及び第２端部の寸法は実施の形態１と同一である。 In the ceiling-embedded air conditioner according to the second embodiment, the dimensions of the main body casing 21, the decorative panel 10, and the drain pan 50 are used to improve the performance by increasing the longitudinal dimension of the product main body 20 as described above. Has been changed. Further, the longitudinal dimension of the branch heat exchanger 41 is larger than that of the first embodiment so as to correspond to the longitudinal dimension of the product main body 20. More specifically, the dimension of the intermediate part 41a of the branch heat exchanger 41 is larger than that in the first embodiment. The dimensions of the bent first end 41b and second end are the same as in the first embodiment.
　実施の形態２に係る天井埋込型空気調和機では、性能を向上させるために、２個の送風機３０が、長手方向に一定の間隔をおいて製品本体２０内に配置されている。２個の送風機３０の間には、両送風機３０の吹出側空間を仕切るための仕切壁３５が設置されている。２個の送風機３０の中間点は第２端部４１ｃ側に偏っている。 In the ceiling-embedded air conditioner according to the second embodiment, in order to improve the performance, the two blowers 30 are arranged in the product main body 20 at a constant interval in the longitudinal direction. A partition wall 35 is provided between the two blowers 30 to partition the blow-out space of the blowers 30. The midpoint between the two blowers 30 is biased toward the second end 41c.
　実施の形態２に係る天井埋込型空気調和機は、以上の構成により、実施の形態１に係る上記（１）～（７）の効果に加え、次の効果を奏することができる。 The ceiling-embedded air conditioner according to Embodiment 2 can achieve the following effects in addition to the effects (1) to (7) according to Embodiment 1 with the above configuration.
　（９）２個の送風機３０は、それらの中間点が製品本体２０内において第２端部４１ｃ側に偏るように配置されているので、２個のうちの一方の送風機３０と第２端部４１ｃとの間のスペースよりも、他方の送風機３０と第１端部４１ｂとの間のスペースの方が大きい。これにより、第１端部４１ｂ側のスペースを、電装品箱７１と電気部品との間の接続配線のためのスペースなどに有効活用することができる。このスペースは、特に、分岐熱交換器４１の第１端部４１ｂの近くに配置されることが多いドレンポンプ６８、レベルセンサ６７などの電気部品の接続に便利である。 (9) Since the two blowers 30 are arranged so that their midpoints are biased toward the second end 41c in the product body 20, one of the two blowers 30 and the second end The space between the other blower 30 and the first end portion 41b is larger than the space between 41c. Thereby, the space on the first end portion 41b side can be effectively used as a space for connection wiring between the electrical component box 71 and the electrical component. This space is particularly convenient for connecting electrical components such as the drain pump 68 and the level sensor 67 that are often arranged near the first end 41b of the branch heat exchanger 41.
　（変形例）
　本発明に係る２方向吹出式の天井埋込型空気調和機は、上記実施の形態に限定されることなく、以下の変形例も適用可能である。以下の変形例については、異なる変形例同士を適宜互いに組み合わせて、適用してもよい。 (Modification)
The two-way blowing type ceiling-embedded air conditioner according to the present invention is not limited to the above-described embodiment, and the following modifications are also applicable. About the following modification, you may apply combining a modification with each other suitably.
　・前記実施の形態１及び２においては、熱交換器４０の具体例として、Ｕ字形の熱交換チューブ４２に対しプレートフィンを取り付けたプレートフィンコイルを挙げているが、他の形式の空気用熱交換器を用いてもよい。他の形式の熱交換器として、例えば、冷媒通路となるマイクロチャネルを有するマイクロチャネル熱交換器を挙げることができる。 In the first and second embodiments, as a specific example of the heat exchanger 40, a plate fin coil in which plate fins are attached to a U-shaped heat exchange tube 42 is described, but other types of heat for air An exchanger may be used. As another type of heat exchanger, for example, a microchannel heat exchanger having a microchannel serving as a refrigerant passage can be cited.
　・前記実施の形態１及び２における第１端部４１ｂの折曲角度αは、分岐熱交換器４１の長手方向の全長をできるだけ長くすること、及び第１端部４１ｂにおける配管のロウ付け作業を容易にすることの観点から、４５度が最も好ましいと考えられる。しかしながら、折曲角度αは他の角度であってもよい。この折曲角度αは、配管のロウ付けの作業性の向上させる観点では、４５度以下に設定することが好ましい。 The bending angle α of the first end portion 41b in the first and second embodiments is to increase the overall length of the branch heat exchanger 41 in the longitudinal direction as much as possible and to braze the pipe at the first end portion 41b. From the viewpoint of facilitating, 45 degrees is considered most preferable. However, the bending angle α may be another angle. The bending angle α is preferably set to 45 degrees or less from the viewpoint of improving the workability of brazing the pipe.
　・前記実施の形態１及び２における第２端部４１ｃの折曲角度βは、第２端部４１ｃにベンダーの掴み代が確保される限りにおいて、できるだけ９０度に近いことが好ましい。したがって、先の実施の形態に記載の折曲角度βは、６０度に限定されるものではない。 In the first and second embodiments, the bending angle β of the second end portion 41c is preferably as close to 90 degrees as possible as long as the second end portion 41c has a gripping margin for the bender. Therefore, the bending angle β described in the previous embodiment is not limited to 60 degrees.
　・前記実施の形態１及び２においては、製品本体２０内における送風機３０の位置を第２端部４１ｃ側に偏らせている。製品本体２０内における送風機３０のこのような配置は、送風機３０と第１端部４１ｂ側との間に電装品箱を設置する場合、配線等により機内の空気抵抗が増大することがないため好ましい。しかしながら、本発明はそのように限定されるものではない。 In the first and second embodiments, the position of the blower 30 in the product main body 20 is biased toward the second end portion 41c. Such an arrangement of the blower 30 in the product main body 20 is preferable when the electrical component box is installed between the blower 30 and the first end 41b side, because the air resistance in the machine does not increase due to wiring or the like. . However, the present invention is not so limited.
　・前記実施の形態１及び２では、分流器６１からの分流管６２は、両分岐熱交換器４１の第１端部４１ｂにおける製品本体２０の長手方向の最外側位置同士を結ぶ最外側直線４５と、両分岐熱交換器４１の第１端部４１ｂにおける空気通過部の第１端部４１ｂ側の端縁から対向する分岐熱交換器４１側へ、空気通過面に対し直角に引き出された二つの引出線４６，４７とにより形成される三角形の領域内に配列されている。しかしながら、本発明はそのように限定されるものではない。上記のように前記三角形内に分流管６２が配列される場合は、分流管６２による機内の空気抵抗の上昇が防止される。 In the first and second embodiments, the shunt pipe 62 from the shunt 61 is the outermost straight line 45 that connects the outermost positions in the longitudinal direction of the product main body 20 at the first ends 41 b of the two branch heat exchangers 41. And the first end portion 41b of both the branch heat exchangers 41 are drawn from the edge on the first end portion 41b side of the air passage portion to the opposite branch heat exchanger 41 side at a right angle to the air passage surface. They are arranged in a triangular area formed by two lead lines 46 and 47. However, the present invention is not so limited. When the flow dividing pipes 62 are arranged in the triangle as described above, an increase in the air resistance in the machine by the flow dividing pipes 62 is prevented.
　・前記実施の形態１及び２においては、室内吸込口１２は、化粧パネル１０の下面における室内吹出口１１よりも内側に、室内吹出口１１と同様の細長形状のものとして形成されている。しかし、室内吸込口１２は、室内吹出口１１よりも内側の略全体に拡がっていてもよい。 In the first and second embodiments, the indoor suction port 12 is formed in an elongated shape similar to the indoor air outlet 11 inside the indoor air outlet 11 on the lower surface of the decorative panel 10. However, the indoor suction port 12 may extend to substantially the entire inner side of the indoor air outlet 11.
　・前記実施の形態１及び２における化粧パネル１０の下面は平面に形成されている。しかしながら、本発明はそのように限定されるものではない。例えば、化粧パネル１０の短辺の中央部を下方向に突出させ、この突出部上に、長辺方向全体に延びる平面部を形成するとともに、この平面部の両側に、長辺方向全体に延びる傾斜面を形成する。そして、室内吸込口１２を中央の平面部の略全体に拡がる形状とし、室内吹出口１１をこの平面部の両側に形成された傾斜面に設けてもよい。 -The lower surface of the decorative panel 10 in the said Embodiment 1 and 2 is formed in the plane. However, the present invention is not so limited. For example, the center portion of the short side of the decorative panel 10 is protruded downward, and a flat portion extending in the entire long side direction is formed on the protruding portion, and the entire long side direction is extended on both sides of the flat portion. An inclined surface is formed. And you may make the indoor inlet 12 into the shape extended to the substantially whole plane part of a center, and may provide the indoor blower outlet 11 in the inclined surface formed in the both sides of this plane part.

Claims (7)

  1. 室内へ温度調節された空気を吹き出す室内吹出口及び室内空気を吸い込む室内吸込口を備えた化粧パネルと、送風機及び熱交換器を内蔵した直方体状の製品本体とを備えた、長方形の平面形状を有する２方向吹出し式の天井埋込型空気調和機であって、
    　前記化粧パネル内には、対向する二つの長辺に沿って２個の前記室内吹出口が形成され、
    　前記送風機は、回転軸が鉛直方向を向くように前記製品本体内に配置された遠心送風機であり、
    　前記熱交換器は、平面的に見て、前記２個の室内吹出口と前記送風機との間に、前記送風機を挟むように配置された２個の分岐熱交換器からなり、
    　前記２個の分岐熱交換器は、長手方向に沿って、第１端部、中間部、及び第２端部に区分され、前記第１端部では、前記分岐熱交換器の冷媒通路に当該分岐熱交換器の外部の冷媒配管が接続され、前記第２端部では、前記冷媒通路が折り返され、前記中間部は、前記室内吹出口と平行に配置されるとともに、
    　前記第１端部と前記第２端部とはそれぞれ前記送風機に向けて折曲され、かつ、前記第１端部及び前記第２端部は、前記中間部に対し異なる角度で折曲されていることを特徴とする天井埋込型空気調和機。     A rectangular planar shape including a decorative panel having an indoor outlet for blowing out temperature-controlled air into the room and an indoor inlet for sucking in the indoor air, and a rectangular parallelepiped product body incorporating a blower and a heat exchanger. A two-way blowing type ceiling-embedded air conditioner having:
    In the decorative panel, two indoor outlets are formed along two opposing long sides,
    The blower is a centrifugal blower disposed in the product body such that the rotation axis faces the vertical direction,
    The heat exchanger is composed of two branch heat exchangers arranged so as to sandwich the blower between the two indoor outlets and the blower when viewed in a plane.
    The two branch heat exchangers are divided along a longitudinal direction into a first end portion, an intermediate portion, and a second end portion. At the first end portion, the two branch heat exchangers are connected to the refrigerant passage of the branch heat exchanger. A refrigerant pipe outside the branch heat exchanger is connected, and at the second end portion, the refrigerant passage is folded back, and the intermediate portion is arranged in parallel with the indoor outlet,
    The first end and the second end are each bent toward the blower, and the first end and the second end are bent at different angles with respect to the intermediate portion. A ceiling-embedded air conditioner characterized by
  2. 請求項１記載の天井埋込型空気調和機において、
    　前記分岐熱交換器の中間部の長手方向における延長線に対する前記第１端部の折曲角度が４５度以下であることを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to claim 1,
    The ceiling-embedded air conditioner, wherein a bending angle of the first end portion with respect to an extension line in a longitudinal direction of an intermediate portion of the branch heat exchanger is 45 degrees or less.
  3. 請求項２記載の天井埋込型空気調和機において、
    　前記分岐熱交換器の中間部の長手方向における延長線に対する前記第２端部の折曲角度が、前記中間部の長手方向における延長線に対する前記第１端部の折曲角度よりも大きいことを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to claim 2,
    The bending angle of the second end portion with respect to the extension line in the longitudinal direction of the intermediate portion of the branch heat exchanger is larger than the bending angle of the first end portion with respect to the extension line in the longitudinal direction of the intermediate portion. Features a ceiling-embedded air conditioner.
  4. 請求項１～３の何れか１項に記載の天井埋込型空気調和機において、
    　前記分岐熱交換器の前記第１端部には分流器からの分流管が接続され、
    　前記分流管は、平面的に見て、前記２個の分岐熱交換器の前記第１端部における前記製品本体の長手方向の最外側位置同士を結ぶ最外側直線と、前記２個の分岐熱交換器の第１端部における空気通過部の第１端部側の端縁から対向する分岐熱交換器へ、空気通過面と直角に引き出された二つの引出線とにより形成される略三角形の領域内に配列されていることを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to any one of claims 1 to 3,
    A shunt pipe from a shunt is connected to the first end of the branch heat exchanger,
    When viewed in plan, the shunt pipe includes an outermost straight line connecting outermost positions in the longitudinal direction of the product main body at the first ends of the two branch heat exchangers, and the two branch heats. A substantially triangular shape formed by two lead lines drawn perpendicularly to the air passage surface from the edge on the first end side of the air passage portion at the first end portion of the exchanger to the opposing branch heat exchanger. A ceiling-embedded air conditioner that is arranged in an area.
  5. 請求項１～４の何れか１項に記載の天井埋込型空気調和機において、
    　前記熱交換器は、前記２個の分岐熱交換器から導出される複数の冷媒出口管が一つのヘッダーに接続されるように構成されていることを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to any one of claims 1 to 4,
    The heat exchanger is configured so that a plurality of refrigerant outlet pipes led out from the two branch heat exchangers are connected to a single header.
  6. 請求項１～５の何れか１項に記載の天井埋込型空気調和機において、
    　前記送風機は、前記製品本体の長手方向において前記第２端部側に偏って配置されていることを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to any one of claims 1 to 5,
    The blower is arranged to be biased toward the second end in the longitudinal direction of the product main body, and is embedded in a ceiling-type air conditioner.
  7. 請求項１～５の何れか１項に記載の天井埋込型空気調和機において、
    　前記送風機は、前記製品本体の長手方向に一定の間隔をおいて２個配設され、これら二つの送風機の中間点が前記第２端部側に偏って配置されていることを特徴とする天井埋込型空気調和機。     The ceiling-embedded air conditioner according to any one of claims 1 to 5,
    Two ceiling fans are arranged in the longitudinal direction of the product main body at a constant interval, and a midpoint between these two fans is arranged so as to be biased toward the second end portion side. Embedded air conditioner.
PCT/JP2013/055283 2012-03-16 2013-02-28 Bidirectional-blow-out, ceiling-embedded air conditioner WO2013136992A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13760702.4A EP2827071B1 (en) 2012-03-16 2013-02-28 Bidirectional-blow-out, ceiling-embedded air conditioner
ES13760702.4T ES2676711T3 (en) 2012-03-16 2013-02-28 Built-in air conditioner in bidirectional blow ceiling
CN201380013481.3A CN104169652B (en) 2012-03-16 2013-02-28 Bidirectional-blow-out, ceiling-embedded air conditioner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012061004A JP5494705B2 (en) 2012-03-16 2012-03-16 Two-way blowout ceiling air conditioner
JP2012-061004 2012-03-16

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EP3006839A1 (en) * 2014-10-10 2016-04-13 Fujitsu General Limited Ceiling-embedded air conditioner
US20220186979A1 (en) * 2020-12-14 2022-06-16 Rheem Manufacturing Company Heating systems with unhoused centrifugal fan and wraparound heat exchanger

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CN104896588B (en) * 2015-05-26 2018-03-30 广东美的制冷设备有限公司 Indoor apparatus of air conditioner
CN107588476B (en) * 2016-07-08 2024-01-26 珠海格力电器股份有限公司 Heat exchange mechanism and air conditioner outdoor unit with same
CN107588475B (en) * 2016-07-08 2023-10-27 珠海格力电器股份有限公司 Air conditioner outdoor unit
CN106765577B (en) * 2017-01-03 2022-08-26 珠海格力电器股份有限公司 Fresh air assembly capable of discharging air annularly and air conditioner
JP6477784B2 (en) * 2017-05-24 2019-03-06 ダイキン工業株式会社 Air conditioner indoor unit
JP6409907B1 (en) * 2017-05-24 2018-10-24 ダイキン工業株式会社 Air conditioner indoor unit
JP7011187B2 (en) * 2019-11-14 2022-02-10 ダイキン工業株式会社 Refrigerant shunt and air conditioner

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US20220186979A1 (en) * 2020-12-14 2022-06-16 Rheem Manufacturing Company Heating systems with unhoused centrifugal fan and wraparound heat exchanger

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JP5494705B2 (en) 2014-05-21
TR201809517T4 (en) 2018-07-23
CN104169652B (en) 2017-05-03
EP2827071A1 (en) 2015-01-21
EP2827071A4 (en) 2015-12-09
EP2827071B1 (en) 2018-06-06
CN104169652A (en) 2014-11-26
JP2013194961A (en) 2013-09-30

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