WO2020194557A1 - Unité intérieure pour appareil de climatisation - Google Patents

Unité intérieure pour appareil de climatisation Download PDF

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Publication number
WO2020194557A1
WO2020194557A1 PCT/JP2019/013028 JP2019013028W WO2020194557A1 WO 2020194557 A1 WO2020194557 A1 WO 2020194557A1 JP 2019013028 W JP2019013028 W JP 2019013028W WO 2020194557 A1 WO2020194557 A1 WO 2020194557A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
indoor unit
side plate
bracket
support surface
Prior art date
Application number
PCT/JP2019/013028
Other languages
English (en)
Japanese (ja)
Inventor
我科　賢二
誠 横関
渡邉　英樹
Original Assignee
東芝キヤリア株式会社
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 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to PCT/JP2019/013028 priority Critical patent/WO2020194557A1/fr
Priority to JP2021508513A priority patent/JP7160412B2/ja
Publication of WO2020194557A1 publication Critical patent/WO2020194557A1/fr

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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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers

Definitions

  • An embodiment of the present invention relates to an indoor unit of an air conditioner.
  • the indoor unit is suspended from behind the ceiling.
  • the indoor unit includes a blower, a heat exchanger, and a housing for accommodating them.
  • the heat exchanger is connected to the side plate of the housing by a sheet metal.
  • a heat insulating material made of styrofoam is arranged on the inner surface of the housing.
  • the side plate when the heat exchanger becomes low temperature, the side plate is cooled by heat transfer through the sheet metal or cold air from the heat exchanger leaking from the gap between the sheet metal and the heat insulating material. Condensation may occur inside and outside the side plate. Such dew condensation can also occur in indoor units of air conditioners other than the ceiling-embedded type.
  • An object to be solved by the present invention is to provide an indoor unit of an air conditioner capable of suppressing dew condensation in the vicinity of a component holding a heat exchanger.
  • the indoor unit of the air conditioner includes a housing including a side plate, a heat exchanger housed in the housing and having an end facing the side plate, and the end of the heat exchanger. It is equipped with a holder for holding.
  • the holder is made of a resin material, a first member that connects the end portion of the heat exchanger and the side plate, and foamed plastic, and is interposed between the heat exchanger and the side plate. It includes a second member that covers at least a part of the first member.
  • FIG. 1 is a perspective view showing the appearance of the indoor unit according to the embodiment.
  • FIG. 2 is a schematic perspective view showing the inside of the indoor unit.
  • FIG. 3 is a schematic cross-sectional view of the indoor unit.
  • FIG. 4 is a schematic perspective view showing a part of the elements shown in FIG. 2 in an enlarged manner.
  • FIG. 5 is a schematic perspective view of the first holder included in the indoor unit.
  • FIG. 6 is a schematic perspective view of the first holder as viewed from another angle.
  • FIG. 7 is a schematic perspective view of the first holder as viewed from yet another angle.
  • FIG. 8 is a diagram schematically showing a state in which the first holder and the bracket are connected.
  • FIG. 1 is a perspective view showing the appearance of the indoor unit 1 according to the present embodiment.
  • FIG. 2 is a schematic perspective view showing the inside of the indoor unit 1.
  • FIG. 3 is a schematic cross-sectional view of the indoor unit 1.
  • the indoor unit 1 is arranged indoors, for example, and is connected to an outdoor unit arranged outdoors via a refrigerant pipe.
  • the indoor unit 1, the outdoor unit, and the refrigerant piping constitute an air conditioner equipped with a refrigeration cycle.
  • the indoor unit 1 includes a housing 2 and a panel 3 that covers the lower surface of the housing 2.
  • a plurality of hanging metal fittings 2a are provided on the outer peripheral surface of the housing 2. By connecting these hanging metal fittings 2a to hanging bolts suspended from the beams behind the ceiling, the indoor unit 1 is fixed to the ceiling of the space to be air-conditioned.
  • the panel 3 has a main body 30, a suction port 31, and a blowout port 32.
  • the suction port 31 includes a grill 33 that is removable with respect to the main body 30 and a filter 34 (see FIG. 3) arranged inside the grill 33.
  • the outlet 32 includes a flap 35 that can be opened and closed with respect to the main body 30.
  • FIG. 1 shows a state in which the outlet 32 is closed by the flap 35.
  • the internal structure shown in FIG. 2 corresponds to a view of the inside of the housing 2 from below in FIG. 1 with the panel 3 and the drain pan 50 described later removed.
  • the housing 2 is box-shaped with the panel 3 side (upper side in FIG. 2) open.
  • the housing 2 has a rectangular top plate 20 which is the upper surface of the indoor unit 1 when mounted on the ceiling, a first side plate 21 along one short side of the top plate 20, and the other of the top plate 20.
  • a second side plate 22 along the short side of the top plate 20 and a third side plate 23 along one long side of the top plate 20 are included.
  • the housing 2 further includes a fourth side plate 24 (see FIG. 1) along the other long side of the top plate 20, but in FIG. 2, the fourth side plate 24 is omitted and the fourth side plate 24 A part of the heat insulating material 25 arranged along the line is broken.
  • the top plate 20 and the side plates 21 to 24 are all made of metal.
  • the heat insulating material 25 can be made of foamed plastic such as Styrofoam.
  • a partition plate 26 is arranged along the longitudinal direction of the housing 2.
  • the internal space of the housing 2 is divided into a blower chamber A and a heat exchange chamber B by a partition plate 26.
  • a blower device 4 is arranged in the blower chamber A.
  • a heat exchanger 5 is arranged in the heat exchange chamber B.
  • a drain pan 50 for receiving drain water dripping from the heat exchanger 5 is arranged between the heat exchanger 5 and the panel 3.
  • the drain pan 50 can be made of foamed plastic such as Styrofoam.
  • a drain pump 6 or the like for draining the drain water accumulated in the drain pan 50 is arranged between the heat exchanger 5 and the second side plate 22.
  • the second side plate 22 is provided with connection ports 51a and 51b for connecting pipes through which the refrigerant flows, and connection ports 60 for connecting pipes for discharging drain water.
  • the connection ports 51a and 51b are connected to the heat exchanger 5.
  • the connection port 60 is connected to the drain pump 6.
  • the blower device 4 includes a fan motor 40, a pair of fan units 41a and 41b, and a rotating shaft 42.
  • the fan units 41a and 41b are arranged so as to face each other with the fan motor 40 in between.
  • the rotating shaft 42 is rotatably supported by a fan motor 40, and both ends extend toward the fan units 41a and 41b, respectively.
  • the number of fan units included in the blower 4 is not limited to two.
  • the fan units 41a and 41b include a multi-blade fan 43 connected to the rotating shaft 42 and a fan case 44 accommodating the multi-blade fan 43.
  • the fan case 44 has an intake hole 45 and a nozzle portion 46.
  • the nozzle portion 46 opens into the heat exchange chamber B and faces the heat exchanger 5.
  • the heat exchanger 5 includes a plurality of plate-shaped fins 52 and a plurality of heat transfer tubes 53 through which a refrigerant flows.
  • Each fin 52 is inclined so that one end on the blower chamber A side is located below the other end (in the direction toward the panel 3).
  • the plurality of fins 52 are arranged in the longitudinal direction of the indoor unit 1 (direction from the first side plate 21 to the second side plate 22).
  • the plurality of heat transfer tubes 53 extend in the longitudinal direction of the indoor unit 1 and penetrate each fin 52.
  • the flow path of the heat exchanger 5 including each heat transfer tube 53 is connected to the connection ports 51a and 51b. That is, the refrigerant supplied from one of the connection ports 51a and 51b is discharged to the other of the connection ports 51a and 51b after passing through each heat transfer tube 53.
  • the blower chamber A leads to the suction port 31.
  • air is taken into the air blowing chamber A through the suction port 31. Further, the air is sucked into the inside of the multi-blade fan 43 through the intake hole 45 and blown out from the nozzle portion 46 toward the heat exchanger 5.
  • the heat exchanger 5 converts the air into cold or warm heat exchange air. The heat exchange air is sent out to the space to be air-conditioned through the outlet 32.
  • the heat exchanger 5 has a first end portion 5a on the first side plate 21 side and a second end portion 5b on the second side plate 22 side.
  • the first end portion 5a is held by a first holder 71 arranged between the heat exchanger 5 and the first side plate 21.
  • the second end portion 5b is held by a second holder 72 arranged between the heat exchanger 5 and the second side plate 22.
  • FIG. 4 is a schematic perspective view showing the heat exchanger 5, the first holder 71, and the second holder 72 in FIG. 2 in an enlarged manner.
  • the X direction is the direction from the first end portion 5a to the second end portion 5b, and corresponds to the longitudinal direction of the heat exchanger 5.
  • the Y direction corresponds to the lateral direction of the heat exchanger 5.
  • the Z direction corresponds to the height direction of the heat exchanger 5 and coincides with the gravity direction when the indoor unit 1 is mounted on the ceiling.
  • the heat exchanger 5 includes a first bracket 54 and a second bracket 55 protruding from the first end portion 5a, and a third bracket 56 protruding from the second end portion 5b.
  • the first bracket 54 and the second bracket 55 are parallel to each other and extend in a direction intersecting the Y direction and the Z direction.
  • the third bracket 56 extends in a direction intersecting the Y direction and the Z direction.
  • the first holder 71 and the first bracket 54 are connected by a plurality of screws S1.
  • the second holder 72 is composed of, for example, an L-shaped bent sheet metal, and has a first portion 72a extending in the X direction and a second portion 72b extending in the second direction Y.
  • the first portion 72a is connected to, for example, the above-mentioned top plate 20 or the second side plate 22.
  • the tip of the second portion 72b is bent to the back side of the third bracket 56, and the tip and the third bracket 56 are connected by one or a plurality of screws S2.
  • pipes and the like connecting the heat exchanger 5 and the connection ports 51a and 51b are arranged in the space formed by the first portion 72a and the second portion 72b.
  • the first holder 71 includes a first member 80 and a second member 90. In each figure, the first member 80 is shaded.
  • the first member 80 is made of a resin material having higher rigidity than the second member 90.
  • the second member 90 is made of a resin material having better heat insulating properties than the first member 80.
  • ABS resin or PS resin can be used as the first member 80.
  • Styrofoam which is a kind of foamed plastic, can be used.
  • the first member 80 and the second member 90 may be integrally molded products.
  • the first member 80 is housed in a mold having the shape of the first holder 71, and the second member 90 is foam-molded in the mold.
  • the first holder 71 can be manufactured. If the first member 80 and the second member 90 are integrally molded products, they can be integrated without using an adhesive. Further, there is no gap between the first member 80 and the second member 90.
  • the second member 90 has a flat plate-shaped base 91.
  • the base 91 has a first surface 91a shown in FIG. 5 and a second surface 91b shown in FIG. 7. Further, the second member 90 has a first convex portion 92 and a second convex portion 93 protruding from the first surface 91a in the X direction.
  • the first convex portion 92 has a first concave portion 92a and a second concave portion 92b that are recessed toward the base portion 91. In the example shown in FIG. 5, the width of the second recess 92b is larger than the width of the first recess 92a.
  • the first member 80 has a plate portion 81 inclined with respect to the Y direction and the Z direction. As shown in FIGS. 5 and 7, both ends of the plate portion 81 in the X direction are each exposed from the second member 90. That is, the plate portion 81 penetrates the second member 90 in the X direction.
  • the portion of the plate portion 81 protruding from the base portion 91 has a first support surface F1 shown in FIG. 6 and a back surface RF shown in FIG. Most of the first support surface F1 is exposed from the second member 90. On the other hand, the back surface RF is covered with the first convex portion 92 except for the region corresponding to the first concave portion 92a and the second concave portion 92b.
  • the second convex portion 93 has a second support surface F2 facing the first support surface F1.
  • the second support surface F2 is parallel to the first support surface F1.
  • a plurality of recesses may be appropriately provided on the second support surface F2.
  • a groove GR for inserting the first end portion 5a of the heat exchanger 5 is formed between the first support surface F1 and the second support surface F2.
  • the plate portion 81 has a plurality of through holes 82 in the region corresponding to the first recess 92a and the second recess 92b.
  • one through hole 82 is provided in the region corresponding to the first recess 92a, and two through holes 82 are provided in the region corresponding to the second recess 92b.
  • the first member 80 has three first ribs 83 protruding from the back surface RF. Both ends of the first rib 83 in the X direction are exposed from the second member 90, respectively. That is, the first rib 83 penetrates the second member 90 (first convex portion 92) in the X direction.
  • the first member 80 further has five second ribs 84 protruding from the plate portion 81. These second ribs 84 extend in the X direction inside the first convex portion 92. The second rib 84 does not reach the first support surface F1. Therefore, the length of the second rib 84 in the X direction is shorter than the length of the first rib 83 in the X direction.
  • the first member 80 further has three third ribs 85 protruding from the plate portion 81 in the direction opposite to each first rib 83.
  • Each third rib 85 extends in the X direction inside the base 91.
  • the first member 80 has three female threads 87 that open on the second surface 91b side.
  • the peripheral walls of these female threads 87 are each connected to the third rib 85.
  • the numbers of the first to third ribs 83 to 85 and the female threads 87 are not limited to the examples shown in FIGS. 5 to 7.
  • the strength of the plate portion 81 is increased by the first to third ribs 83 to 85. Further, the first to third ribs 83 to 85 increase the contact area between the first member 80 and the second member 90, and the force applied to the first member 80 is dispersed in various parts of the second member 90. As a result, peeling of the contact surface between the first member 80 and the second member 90 can be suppressed.
  • FIG. 8 is a diagram schematically showing a state in which the first holder 71, the first bracket 54, and the second bracket 55 are connected.
  • various shaded areas are YZ of the first member 80, the first convex portion 92, the second convex portion 93, the first bracket 54, and the second bracket 55 at positions corresponding to the through holes 82.
  • the Z direction (gravity direction) faces downward in the figure as in the state where the indoor unit 1 is mounted on the ceiling. That is, the blower chamber A is located in the direction indicated by the arrow on the right side in the figure, and the panel 3 is located in the direction indicated by the arrow on the lower side in the figure.
  • Each of the support surfaces F1 and F2 and the brackets 54 and 55 are inclined so that one end on the blower chamber A side is closer to the panel 3 than the other end. Even when the drain water flows toward one end on the air blowing chamber A side, the drain water is received by the above-mentioned drain pan 50.
  • the first bracket 54 and the second bracket 55 are inserted into the groove GR between the first support surface F1 and the second support surface F2.
  • the first bracket 54 is in contact with the first support surface F1.
  • the second bracket 55 is in contact with the second support surface F2.
  • the first bracket 54 has a female screw 54a at a position corresponding to each through hole 82 of the first member 80.
  • the screw S1 also shown in FIG. 4 passes through the through hole 82 and is screwed into the female screw 54a.
  • the screw S1 is inserted into one of the two sets of through holes 82 and the female screw 54a corresponding to the second recess 92b, and is not inserted into the other.
  • the screw S1 may be inserted into both of these two sets of through holes 82 and the female screw 54a, respectively.
  • the first support surface F1 is located between the first bracket 54 and the lower panel 3. Therefore, the first support surface F1 receives the load of the heat exchanger 5 via the first bracket 54. Further, since the second bracket 55 is in contact with the second support surface F2, rattling of the heat exchanger 5 in the Y direction and the Z direction is suppressed.
  • the first end portion 5a of the heat exchanger 5 and the first side plate 21 are connected by a sheet metal instead of the first holder 71, the first side plate 21 is cooled by heat transfer through the sheet metal, and the first side plate 21 is cooled. Condensation may occur inside and outside the 1 side plate 21. Since it is difficult for the drain pan 50 to receive this condensed water, there is a possibility that it may collect on the upper surface of the panel 3 or drip from the indoor unit 1.
  • the thermal conductivity of the resin material is lower than that of the metal material. , The generation of dew condensation water on the first side plate 21 and the first holder 71 can be suppressed.
  • the heat exchanger 5 Since the load of the heat exchanger 5 is mainly received by the first member 80 having excellent rigidity, the heat exchanger 5 can be stably supported. Further, the second member 90 having excellent heat insulating properties is interposed between the heat exchanger 5 and the first side plate 21 and covers a part of the first member 80. As a result, the cold air from the heat exchanger 5 is less likely to be transmitted to the first side plate 21, and the occurrence of dew condensation on the first side plate 21 can be more reliably suppressed.
  • first member 80 and the second member 90 are integrally molded products, there will be no gap between them. Therefore, the cold air from the heat exchanger 5 can be more preferably shut off. As described above, by providing the first to third ribs 83 to 85 on the first member 80, the strength of the first member 80 is increased and the peeling of the contact surface between the first member 80 and the second member 90 is suppressed. it can.
  • first member 80 and the second member 90 are bonded with an adhesive, the interface between the first member 80 and the second member 90 may be peeled off due to the force caused by the thermal expansion and contraction of the heat exchanger 5. Abnormal noise may occur due to peeling. However, if the first member 80 and the second member 90 are integrally molded products, such a problem is unlikely to occur.
  • the structure of the first holder 71 can be deformed in various ways depending on the shape of the first end portion 5a of the heat exchanger 5 and the shape of the bracket provided on the first end portion 5a.
  • the second end portion 5b of the heat exchanger 5 is held by the second holder 72 of the sheet metal.
  • the second end portion 5b may also be held by a resin holder like the first end portion 5a.
  • the holding structure of the heat exchanger 5 in the ceiling-embedded indoor unit is disclosed.
  • This holding structure can be applied not only to the ceiling-embedded type but also to other types of indoor units.

Abstract

L'unité intérieure pour un appareil de climatisation selon un mode de réalisation de la présente invention comprend : un corps de boîtier qui comprend une plaque latérale ; un échangeur de chaleur qui est logé à l'intérieur du corps de boîtier et qui a une section d'extrémité qui fait face à la plaque latérale ; et un outil de maintien qui maintient la section d'extrémité de l'échangeur de chaleur. L'outil de maintien est équipé : d'un premier élément qui est composé d'un matériau de résine et couple la section d'extrémité de l'échangeur de chaleur et la plaque latérale ; et un second élément qui est composé d'un plastique alvéolaire, qui est interposé entre l'échangeur de chaleur et la plaque latérale, et qui recouvre au moins partiellement le premier élément.
PCT/JP2019/013028 2019-03-26 2019-03-26 Unité intérieure pour appareil de climatisation WO2020194557A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2019/013028 WO2020194557A1 (fr) 2019-03-26 2019-03-26 Unité intérieure pour appareil de climatisation
JP2021508513A JP7160412B2 (ja) 2019-03-26 2019-03-26 空気調和機の室内ユニット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/013028 WO2020194557A1 (fr) 2019-03-26 2019-03-26 Unité intérieure pour appareil de climatisation

Publications (1)

Publication Number Publication Date
WO2020194557A1 true WO2020194557A1 (fr) 2020-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/013028 WO2020194557A1 (fr) 2019-03-26 2019-03-26 Unité intérieure pour appareil de climatisation

Country Status (2)

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JP (1) JP7160412B2 (fr)
WO (1) WO2020194557A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796018U (fr) * 1980-12-05 1982-06-12
JPS6134017U (ja) * 1984-07-30 1986-03-01 ダイキン工業株式会社 熱交換器の取付構造
JPH09166335A (ja) * 1995-12-14 1997-06-24 Zexel Corp 空調用室内機
JP2000104943A (ja) * 1998-09-30 2000-04-11 Daikin Ind Ltd 空気調和ユニット
CN202792244U (zh) * 2012-07-05 2013-03-13 大金工业株式会社 空调机室内机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796018U (fr) * 1980-12-05 1982-06-12
JPS6134017U (ja) * 1984-07-30 1986-03-01 ダイキン工業株式会社 熱交換器の取付構造
JPH09166335A (ja) * 1995-12-14 1997-06-24 Zexel Corp 空調用室内機
JP2000104943A (ja) * 1998-09-30 2000-04-11 Daikin Ind Ltd 空気調和ユニット
CN202792244U (zh) * 2012-07-05 2013-03-13 大金工业株式会社 空调机室内机

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JPWO2020194557A1 (ja) 2021-11-04

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