WO2021234963A1 - Unité extérieure et dispositif à cycle frigorifique - Google Patents

Unité extérieure et dispositif à cycle frigorifique Download PDF

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Publication number
WO2021234963A1
WO2021234963A1 PCT/JP2020/020356 JP2020020356W WO2021234963A1 WO 2021234963 A1 WO2021234963 A1 WO 2021234963A1 JP 2020020356 W JP2020020356 W JP 2020020356W WO 2021234963 A1 WO2021234963 A1 WO 2021234963A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
outdoor unit
outdoor
headers
protective panel
Prior art date
Application number
PCT/JP2020/020356
Other languages
English (en)
Japanese (ja)
Inventor
充宏 池田
有 玉置
寿典 植木
豊 青山
圭 古久保
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2022524851A priority Critical patent/JPWO2021234963A1/ja
Priority to PCT/JP2020/020356 priority patent/WO2021234963A1/fr
Publication of WO2021234963A1 publication Critical patent/WO2021234963A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards

Definitions

  • This technology is related to outdoor units and refrigeration cycle equipment. In particular, it relates to a part of a heat exchanger that becomes hot.
  • corrugated fin tube type heat exchanger in which corrugated fins are arranged between the flat portions of a plurality of flat heat transfer tubes connected between a pair of headers. Then, in such a heat exchanger, there is a heat exchanger in which a pair of headers are arranged vertically divided into upper and lower parts (see, for example, Patent Document 1).
  • an outdoor heat exchanger is installed on the side surface inside the housing surrounding the fan installed in the center. Since the outdoor unit has an air suction port on the side surface, the outdoor heat exchanger can be visually recognized.
  • the outdoor heat exchanger functions as a condenser
  • high-temperature and high-pressure gas refrigerant flows from the compressor into the header of the outdoor heat exchanger.
  • the headers are covered by the frame. For this reason, the frame can prevent people from bringing their hands or the like close to the header and can protect them from heat.
  • the purpose is to solve the above-mentioned problems and obtain an outdoor unit and a refrigeration cycle device that can protect from heat.
  • the outdoor unit according to this disclosure is arranged in parallel with a housing accommodating the equipment and a pair of headers and a pair of headers through which the fluid passes through the pipe, which are separated from each other and separated into upper and lower parts in the height direction.
  • a pair of headers each with both ends connected to each other, have a plurality of heat transfer tubes through which the fluid passes, and an outdoor heat exchanger installed along the sides of the housing, on the sides of the housing.
  • the protective panel is installed at the position corresponding to the lower header.
  • the refrigerating cycle device has an outdoor unit according to the disclosure.
  • FIG. 1 It is a figure which shows the structure of the air conditioner which concerns on Embodiment 1.
  • FIG. 2 It is a figure explaining the structure of the outdoor unit 200 which concerns on Embodiment 1.
  • FIG. 2 It is a figure explaining the structure of the outdoor heat exchanger 230 which concerns on Embodiment 1.
  • FIG. 2 It is a figure explaining the peripheral structure of the outdoor heat exchanger 230 in the outdoor unit 200 which concerns on Embodiment 1.
  • FIG. It is a figure (the 2) explaining the drainage in the lower part of the outdoor heat exchanger 230 which concerns on Embodiment 1.
  • FIG. 3 It is a figure (the 3) explaining the drainage in the lower part of the outdoor heat exchanger 230 which concerns on Embodiment 1.
  • FIG. It is a figure which shows the appearance of the lattice panel 205 which concerns on Embodiment 3.
  • FIG. It is a figure explaining the relationship between the grid panel 205 and the lower header 11 which concerns on Embodiment 3.
  • FIG. It is a figure which shows another example of the small hole part 205B of the lattice panel 205 which concerns on Embodiment 3.
  • the high and low pressure and temperature are not fixed in relation to the absolute values, but are relatively fixed in terms of the state and operation of the device and the like.
  • the subscripts and the like may be omitted.
  • FIG. 1 is a diagram showing a configuration of an air conditioner according to the first embodiment.
  • an air conditioner will be described as an example of a refrigeration cycle device having the heat exchanger of the first embodiment.
  • the air conditioner of the first embodiment includes an outdoor unit 200, an indoor unit 100, and two refrigerant pipes 300. Then, the compressor 210, the four-way valve 220 and the outdoor heat exchanger 230 of the outdoor unit 200, and the indoor heat exchanger 110 and the expansion valve 120 of the indoor unit 100 are connected by a refrigerant pipe 300 to form a refrigerant circuit. ..
  • a refrigerant pipe 300 to form a refrigerant circuit.
  • the air conditioner of the first embodiment it is assumed that one outdoor unit 200 and one indoor unit 100 are connected by piping. However, the number of connected devices is not limited to this.
  • the indoor unit 100 has an indoor fan 130 in addition to the indoor heat exchanger 110 and the expansion valve 120.
  • the expansion valve 120 of the throttle device or the like decompresses and expands the refrigerant.
  • the opening degree is adjusted based on an instruction from a control device (not shown) or the like.
  • the indoor heat exchanger 110 exchanges heat between the air in the room, which is the space to be air-conditioned, and the refrigerant.
  • the indoor heat exchanger 110 functions as a condenser to condense and liquefy the refrigerant.
  • the indoor heat exchanger 110 functions as an evaporator to evaporate and vaporize the refrigerant.
  • the indoor fan 130 passes the indoor air through the indoor heat exchanger 110, and supplies the air that has passed through the indoor heat exchanger 110 into the room.
  • FIG. 2 is a diagram illustrating a configuration of the outdoor unit 200 according to the first embodiment.
  • the outdoor unit 200 of the first embodiment is a top-flow type having an outlet 202 of the outdoor fan 250 in the center of the upper part of the housing 201.
  • FIG. 2 shows the upper portion of the outdoor heat exchanger 230 for the sake of explanation, but as shown in FIG. 4 described later, the outdoor unit 200 according to the first embodiment exchanges outdoor heat to a position close to the bottom surface.
  • the vessel 230 is arranged.
  • the outdoor unit 200 has a compressor 210, a four-way valve 220, an outdoor heat exchanger 230, and an accumulator 240 as equipment constituting the refrigerant circuit.
  • the compressor 210 compresses and discharges the sucked refrigerant.
  • the compressor 210 is, for example, a scroll type compressor, a reciprocating type compressor, a vane type compressor, or the like. Further, although not particularly limited, the compressor 210 can change the capacity of the compressor 210 by arbitrarily changing the operating frequency by, for example, an inverter circuit or the like.
  • the four-way valve 220 which serves as a flow path switching device, is a valve that switches the flow of the refrigerant between, for example, a cooling operation and a heating operation.
  • the four-way valve 220 connects the discharge side of the compressor 210 to the indoor heat exchanger 110 and the suction side of the compressor 210 to the outdoor heat exchanger 230 when the heating operation is performed. Further, the four-way valve 220 connects the discharge side of the compressor 210 to the outdoor heat exchanger 230 and the suction side of the compressor 210 to the indoor heat exchanger 110 when the cooling operation is performed.
  • the flow path switching device is not limited to this.
  • a plurality of two-way valves may be combined to form a flow path switching device.
  • the accumulator 240 is installed on the suction side of the compressor 210.
  • the accumulator 240 passes a gaseous refrigerant (hereinafter referred to as a gas refrigerant) and stores a liquid refrigerant (hereinafter referred to as a liquid refrigerant).
  • the outdoor heat exchanger 230 exchanges heat between the refrigerant and the outdoor air.
  • the refrigerant is a fluid that serves as a heat exchange medium.
  • the outdoor heat exchanger 230 of the first embodiment functions as an evaporator during the heating operation, and evaporates and vaporizes the refrigerant.
  • the outdoor heat exchanger 230 of the first embodiment functions as a condenser and a supercooler to condense and liquefy the refrigerant to perform supercooling.
  • the outdoor heat exchanger 230 of the first embodiment has a pair of lower headers 11 and folded headers 13 which are vertically separated from each other in the height direction.
  • the outdoor fan 250 is driven to pass air from the outside of the outdoor unit 200 to the outdoor heat exchanger 230 to form a flow of air flowing out from the inside of the outdoor unit 200.
  • the condensed and liquefied refrigerant passes through the expansion valve 120.
  • the refrigerant is depressurized as it passes through the expansion valve 120.
  • the refrigerant that has been decompressed by the expansion valve 120 and is in a gas-liquid two-phase state passes through the outdoor heat exchanger 230.
  • the refrigerant that evaporates and gasifies by exchanging heat with the outdoor air sent from the outdoor fan 250 passes through the four-way valve 220 and the accumulator 240 and is sucked into the compressor 210 again. Will be done.
  • the refrigerant of the air conditioner circulates to perform air conditioning related to heating.
  • the dotted line arrow in FIG. 1 indicates the flow of the refrigerant in the cooling operation.
  • the high-temperature and high-pressure gas refrigerant compressed and discharged by the compressor 210 passes through the four-way valve 220 and flows into the outdoor heat exchanger 230.
  • the refrigerant that has passed through the outdoor heat exchanger 230 and is condensed and liquefied by exchanging heat with the outdoor air supplied by the outdoor fan 250 passes through the expansion valve 120.
  • the refrigerant is depressurized as it passes through the expansion valve 120.
  • the refrigerant that has been decompressed by the expansion valve 120 and is in a gas-liquid two-phase state passes through the indoor heat exchanger 110.
  • the refrigerant that evaporates and gasifies by exchanging heat with the air in the air-conditioned space passes through the four-way valve 220 and the accumulator 240, and is sucked into the compressor 210 again.
  • the refrigerant of the air conditioner circulates to perform air conditioning related to cooling.
  • FIG. 3 is a diagram illustrating the configuration of the outdoor heat exchanger 230 according to the first embodiment.
  • the outdoor heat exchanger 230 is a corrugated fin tube type heat exchanger having a parallel piping type.
  • the outdoor unit 200 has a plurality of outdoor heat exchangers 230 shown in FIG. 3 and is arranged along the side surface of the housing 201.
  • the outdoor heat exchanger 230 has two lower headers 11 (lower header 11A and lower header 11B), a folded header 13, a plurality of flat heat transfer tubes 14, and a plurality of corrugated fins 15.
  • a pair of headers consisting of two lower headers 11 and a folded header 13 are arranged vertically separately in the height direction.
  • the outdoor unit 200 is a top flow type. Since a device such as a compressor 210 is installed on the lower side of the outdoor unit 200, the folded header 13 is located on the upper side due to piping connection and the like, and the two lower headers 11 are lower than the folded header 13. Placed in a side position.
  • a plurality of flat heat transfer tubes 14 having the flat surfaces facing each other so as to be perpendicular to the lower header 11 and the folded header 13 and to be parallel to each other.
  • Group is arranged side by side in two rows.
  • the group of flat heat transfer tubes 14 in one row is connected to one lower header 11.
  • the lower header 11 is a pipe that is connected to other devices constituting the refrigeration cycle device by piping, and a refrigerant that is a fluid serving as a heat exchange medium flows in and out, and the refrigerant branches or merges.
  • Each of the lower headers 11 has a refrigerant inlet / outlet pipe 12 (refrigerant inlet / outlet pipe 12A and a refrigerant inlet / outlet pipe 12B) into which a refrigerant from the outside flows in and out.
  • the folded header 13 serves as a bridge for merging the refrigerant flowing in from the group of flat heat transfer tubes 14 in one row and branching out to the group of flat heat transfer tubes 14 in the other row. It is a header.
  • the flat heat transfer tube 14 has a flat cross section, and the outer surface on the longitudinal side of the flat shape along the depth direction, which is the flow direction of air, is flat, and the outer surface on the lateral side orthogonal to the longitudinal direction is flat. It is a heat transfer tube whose side surface is curved.
  • the flat heat transfer tube 14 of the first embodiment is a multi-hole flat heat transfer tube having a plurality of holes serving as a flow path for the refrigerant inside the tube. In the first embodiment, the hole of the flat heat transfer tube 14 is formed so as to face the height direction because it is a flow path between the lower header 11 and the folded header 13.
  • each flat heat transfer tube 14 is inserted, brazed, and joined into an insertion hole (not shown) included in the lower header 11 and the folded header 13.
  • NS As the brazing brazing material, for example, a brazing material containing aluminum is used.
  • the lower header 11, the folded header 13, and the inside of each flat heat transfer tube 14 communicate with each other.
  • corrugated fins 15 are arranged between the arranged flat heat transfer tubes 14 facing each other.
  • the corrugated fins 15 are arranged to increase the heat transfer area between the refrigerant and the outside air.
  • the corrugated fin 15 is corrugated on the plate material, and is bent into a wavy shape and a bellows by a zigzag fold that repeats mountain folds and valley folds.
  • the bent portion due to the unevenness formed in the wave shape becomes the top of the wave shape.
  • the tops of the corrugated fins 15 are aligned in the height direction. In the corrugated fin 15, the top of the corrugated shape and the flat surface of the flat heat transfer tube 14 are in surface contact with each other.
  • the contact portion is brazed and joined by a brazing material.
  • the plate material of the corrugated fin 15 is made of, for example, an aluminum alloy.
  • a brazing material layer is clad on the surface of the plate material.
  • the clad brazing material layer is based on, for example, a brazing material containing aluminum-silicon-based aluminum.
  • FIG. 4 is a diagram illustrating a configuration around the outdoor heat exchanger 230 in the outdoor unit 200 according to the first embodiment.
  • the outdoor heat exchanger 230 according to the first embodiment when used as a condenser, the refrigerant from the high temperature and high pressure compressor 210 flows into the lower header 11. At this time, the lower header 11 becomes hot, and the side surface of the outdoor unit 200 becomes hot.
  • the heat exchanger in which the header is installed in the left-right direction can cover the header with the frame of the housing 201, but the lower header 11 of the outdoor heat exchanger 230 of the first embodiment in which the header is installed in the up-down direction is Cannot be covered with a frame.
  • the outdoor unit 200 of the first embodiment has a protective panel 203 on the side surface portion of the housing 201.
  • the protective panel 203 is installed at a position corresponding to the lower header 11, and is a high-temperature portion protective panel that prevents a person from touching a high-temperature device or portion such as the lower header 11.
  • the position corresponding to the lower header 11 includes not only the lower header 11 but also pipes and the like arranged in the vicinity of the lower header 11.
  • the protective panel 203 is installed on the side surface (left and right side surface and back surface) other than the front side of the outdoor unit 200 where the outdoor heat exchanger 230 is exposed in the outdoor unit 200 of FIG.
  • FIG. 5 is a diagram showing a protective panel 203 according to the first embodiment.
  • the protective panel 203 of the first embodiment has a shape capable of covering the lower header 11 and the like of the housing 201 exposed on the side surface of the housing 201 and blindfolding the lower header 11 and the like.
  • the protective panel 203 has slits 203A as a plurality of opening holes for ventilation and drainage.
  • the slit 203A is sized so that fingers do not pass through it, but it is desirable that it does not obstruct ventilation and drainage. Therefore, for example, the size of the slit 203A is set to about 5 mm ⁇ about 20 mm.
  • the protective panel 203 has the slit 203A, but the shape of the opening portion is not limited to the shape of the slit 203A.
  • the protective panel 203 is made of resin.
  • the resin used as a material has heat resistance to heat dissipation from the lower header 11 and the like.
  • the protective panel 203 is made of a material having low heat transfer property in order to prevent freezing of moisture adhering to the protective panel 203 in winter. Therefore, for example, the protective panel 203 is made of AS resin (styrene acrylonitrile copolymer: Styrene Acrylonitrile copolymer) or the like.
  • FIGS. 6 to 9 are views for explaining drainage in the lower part of the outdoor heat exchanger 230 according to the first embodiment.
  • the inner panel 204 shown in FIGS. 6 to 9 is installed in the lower part of the outdoor heat exchanger 230 in the housing 201, and is a drainage flow that guides water 400 such as drain water dripping from the outdoor heat exchanger 230 to the ground or the like. It is a panel that becomes a road.
  • the outdoor heat exchanger 230 when the outdoor heat exchanger 230 functions as an evaporator, the outdoor heat exchanger 230 is frosted.
  • the inner panel 204 receives water 400 such as drain water in which frost is melted by defrosting or the like, guides it to the ground or the like, and discharges it to the outside of the outdoor unit 200.
  • water 400 freezes in the inner panel 204 and the flow becomes poor, the water 400 that has stopped flowing freezes and hinders the drainage from the inner panel 204.
  • the water 400 dropped from the outdoor heat exchanger 230 is discharged from the opening portion below the protective panel 203. Will be done.
  • the protective panel 203 has a slit 203A so that drainage can be performed from the slit 203A. Therefore, in the outdoor unit 200, even if drainage cannot be performed from the inner panel 204, drainage can be performed from the slit 203A of the protective panel 203.
  • the outdoor heat exchanger 230 in which the lower header 11 and the folded header 13 are vertically divided in the height direction is arranged on the side surface of the housing 201.
  • the protective panel 203 is installed at a position corresponding to the lower header 11. Therefore, it is possible to protect the high temperature portion such as the lower header 11 from being touched by a person or the like.
  • the protective panel 203 having a plurality of slits 203A it is possible to drain water such as drain water dripping from the air passage and the outdoor heat exchanger 230 due to the inflow of air.
  • the slit 203A of the protective panel 203 is sized so that a finger does not pass through it. Further, by using the protective panel 203 as a material having low heat transfer, it is possible to prevent freezing.
  • FIG. 10 is a diagram showing a protective panel 203 according to the second embodiment.
  • the protective panel 203 is made of a resin having low heat transfer. However, in cold regions, freezing may be unavoidable even with a low heat transfer resin. Therefore, in the second embodiment, the protective panel 203 is made of metal.
  • the heater 203B which is a heating device, is attached to the protective panel 203. Then, the heater 203B may heat the protective panel 203 to prevent freezing in the protective panel 203.
  • FIG. 11 is a diagram showing the appearance of the outdoor unit 200 according to the third embodiment.
  • the outdoor unit 200 of the first embodiment has a configuration in which the outdoor heat exchanger 230 is exposed on almost the entire side surface.
  • the position of the lower header 11 in the height direction is different from that of the outdoor unit 200 of the first embodiment, and the outdoor heat exchanger 230 is exposed on the upper half surface of the side surface.
  • It is a type outdoor unit 200. Below the outdoor unit 200, there is a machine room in which a compressor 210 or the like is installed in the housing 201.
  • the grid panel 205 is installed on the side surface of the housing 201 in the portion where the outdoor heat exchanger 230 is exposed.
  • the outdoor unit 200 of the third embodiment has a grid panel 205 as a substitute for the protective panel 203 of the first embodiment.
  • FIG. 12 is a diagram showing the appearance of the grid panel 205 according to the third embodiment.
  • the grid panel 205 has a grid hole 205A which is a grid-shaped opening.
  • the grid panel 205 of the third embodiment has not only the grid hole 205A but also a small hole portion 205B which is an opening hole smaller than the grid hole 205A.
  • FIG. 12 shows a lattice hole 205A and a small hole portion 205B formed by punching.
  • FIG. 13 is a diagram illustrating the relationship between the grid panel 205 and the lower header 11 according to the third embodiment.
  • the small hole portion 205B of the grid panel 205 is installed at a position corresponding to the lower header 11 of the outdoor heat exchanger 230.
  • the small hole portion 205B has a size that can prevent a finger or the like from passing through and touching a high temperature portion such as the lower header 11.
  • the shape of the hole is not particularly limited as long as the small hole portion 205B has a size that does not allow a finger or the like to pass through.
  • the opening hole of the small hole portion 205B can be made into a slit shape or the like.
  • FIG. 14 is a diagram showing another example of the small hole portion 205B of the grid panel 205 according to the third embodiment. As shown in FIG. 14, the small hole portion 205B may be formed by cutting and raising.
  • the outdoor heat exchanger 230 and the outdoor heat exchanger 230 in which the lower header 11 and the folded header 13 are vertically separated in the height direction are arranged on the side surface of the housing 201. It has a grid panel 205. Then, a small hole portion 205B having a smaller opening hole than the grid hole 205A is provided at a position corresponding to the lower header 11 of the grid panel 205. Therefore, it is possible to protect the high temperature portion such as the lower header 11 from being touched by a person or the like. Further, the small hole portion 205B can be ventilated and can be used as an air passage for allowing air to flow into the outdoor heat exchanger 230.
  • Embodiment 4 In the outdoor unit 200 of the above-described first to third embodiments, the sizes of the openings in the plurality of slits 203A of the protective panel 203 and the small holes 205B of the lattice panel 205 are fixed, but the size is limited to this. is not it.
  • the size of the opening portion may be different based on the distance from the lower header 11, such as expanding the space when the distance from the lower header 11 is long.
  • the above-mentioned first to third embodiments have described the corrugated fin tube type outdoor heat exchanger 230 having a plurality of flat heat transfer tubes 14 and corrugated fins 15, but the present invention is not limited thereto. If the outdoor heat exchanger has headers installed in the vertical direction, which is the height direction, in the outdoor unit, a heat transfer tube other than the flat heat transfer tube 14 or an outdoor heat exchanger composed of fins other than the corrugated fin 15 is applied. be able to.
  • the air conditioner using the outdoor unit 200 has been described, but the present invention also applies to other refrigeration cycle devices such as a refrigerating device, a refrigerating device, and a hot water supply device. be able to.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne une unité extérieure qui est pourvue : d'un boîtier pour stocker un équipement ; et d'un échangeur de chaleur extérieur qui est installé le long d'une surface latérale du boîtier, a une paire de collecteurs qui sont disposés de sorte à être séparés verticalement dans le sens de la hauteur et qui permettent à un fluide de passer à travers des tubes, et a une pluralité de tubes de transfert de chaleur qui sont disposés en parallèle les uns par rapport aux autres entre la paire de collecteurs et qui comportent chacun des extrémités opposées reliées à la paire de collecteurs de sorte à permettre le passage d'un fluide à travers ceux-ci. Un panneau de protection est disposé au niveau d'une partie, dans la surface latérale du boîtier, correspondant à un collecteur sur le côté inférieur de la paire de collecteurs.
PCT/JP2020/020356 2020-05-22 2020-05-22 Unité extérieure et dispositif à cycle frigorifique WO2021234963A1 (fr)

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JP2022524851A JPWO2021234963A1 (fr) 2020-05-22 2020-05-22
PCT/JP2020/020356 WO2021234963A1 (fr) 2020-05-22 2020-05-22 Unité extérieure et dispositif à cycle frigorifique

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Application Number Priority Date Filing Date Title
PCT/JP2020/020356 WO2021234963A1 (fr) 2020-05-22 2020-05-22 Unité extérieure et dispositif à cycle frigorifique

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515061U (fr) * 1974-06-27 1976-01-14
JPH0828906A (ja) * 1994-07-15 1996-02-02 Mitsuboshi:Kk 空気調和装置の屋外ユニット用のルーバー
KR20160077835A (ko) * 2014-12-24 2016-07-04 엘지전자 주식회사 공기 조화기의 실외기
JP2018109455A (ja) * 2016-12-28 2018-07-12 株式会社前川製作所 空冷式熱交換ユニット及びクーラユニット
WO2019239446A1 (fr) * 2018-06-11 2019-12-19 三菱電機株式会社 Unité extérieure de climatiseur et climatiseur associé

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008175099A (ja) * 2007-01-17 2008-07-31 Hitachi Ltd 電子計算機のファンユニット構造
JP6698841B2 (ja) * 2016-07-14 2020-05-27 三菱電機株式会社 空気調和機の室外機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515061U (fr) * 1974-06-27 1976-01-14
JPH0828906A (ja) * 1994-07-15 1996-02-02 Mitsuboshi:Kk 空気調和装置の屋外ユニット用のルーバー
KR20160077835A (ko) * 2014-12-24 2016-07-04 엘지전자 주식회사 공기 조화기의 실외기
JP2018109455A (ja) * 2016-12-28 2018-07-12 株式会社前川製作所 空冷式熱交換ユニット及びクーラユニット
WO2019239446A1 (fr) * 2018-06-11 2019-12-19 三菱電機株式会社 Unité extérieure de climatiseur et climatiseur associé

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