WO2017130976A1 - Heat exchanger and refrigeration device outdoor unit equipped with same - Google Patents

Heat exchanger and refrigeration device outdoor unit equipped with same Download PDF

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Publication number
WO2017130976A1
WO2017130976A1 PCT/JP2017/002376 JP2017002376W WO2017130976A1 WO 2017130976 A1 WO2017130976 A1 WO 2017130976A1 JP 2017002376 W JP2017002376 W JP 2017002376W WO 2017130976 A1 WO2017130976 A1 WO 2017130976A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
temperature sensor
flat tube
outdoor
tube
Prior art date
Application number
PCT/JP2017/002376
Other languages
French (fr)
Japanese (ja)
Inventor
中野　寛之
博治 久保
泰弘 笹井
Original Assignee
ダイキン工業株式会社
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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
Publication of WO2017130976A1 publication Critical patent/WO2017130976A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • 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
    • 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
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight

Definitions

  • the present invention relates to a heat exchanger, and more particularly, to a heat exchanger that is mounted for an outdoor unit of a refrigeration apparatus using a flat tube.
  • Patent Document 1 Japanese Patent Laid-Open No. 2015-90237
  • a flat tube is folded back in a meandering manner, and fins are attached to flat portions other than the folded portion.
  • This heat exchanger is used as an outdoor heat exchanger.
  • the heat exchanger does not have a header, the place where the temperature sensor is attached is naturally confined to the flat tube, but the flat tube is not strong enough to deform the flat tube when installing the temperature sensor, or There is a risk of hurting.
  • An object of the present invention is to provide a heat exchanger to which a temperature sensor can be reliably attached without deforming or damaging a flat tube.
  • the heat exchanger includes a flat tube, a heat transfer fin, a plate member, and a temperature sensor holding unit.
  • the heat transfer fin is mounted so as to come into contact with the flat tube.
  • the plate member is attached to a fin non-attachment portion of the flat tube excluding the fin attachment portion to which the heat transfer fin is attached.
  • the temperature sensor holding part is formed on the plate member or fixed to the plate member in order to hold the temperature sensor.
  • the heat exchanger according to the second aspect of the present invention is the heat exchanger according to the first aspect, and the temperature sensor holding portion is disposed in the vicinity of the flat tube.
  • the heat exchanger temperature can be detected accurately.
  • the heat exchanger according to the third aspect of the present invention is a heat exchanger according to the first aspect or the second aspect, and a flat tube and a plate member are brazed.
  • the heat exchanger which concerns on the 4th viewpoint of this invention is a heat exchanger which concerns on any one of the 1st viewpoint to the 3rd viewpoint, Comprising:
  • An outdoor unit of a refrigeration apparatus is an outdoor unit of a refrigeration apparatus including the heat exchanger according to any one of the first to fourth aspects, and further includes a casing.
  • the casing has a machine room in which a compressor is arranged and a blower room in which a blower is arranged.
  • the heat exchanger is disposed in the blower chamber.
  • the plate member functions as a part of a partition member that separates the machine room and the blower room.
  • the temperature sensor is held by the temperature sensor holding portion provided on the plate member that is neither the flat tube nor the heat transfer fin, it is avoided that the flat tube is damaged.
  • the heat exchanger since the temperature sensor is close to the flat tube by arranging the temperature sensor holding portion in the vicinity of the flat tube, the heat exchanger temperature can be accurately detected. .
  • the heat exchanger temperature can be accurately detected.
  • the temperature sensor along the horizontal plane of the flat tube, so that the measurement points of the temperature sensor with respect to the flat tube are stable, and the heat exchanger temperature is accurately set. Can be detected.
  • FIG. 5 is a perspective view of the left side plate, the outdoor heat exchanger, and the outdoor fan when the left side plate, the outdoor heat exchanger, and the outdoor fan that are disposed at regular positions are viewed from a different angle from that of FIG. 4.
  • maintenance part The perspective view before the assembly of a temperature sensor and a temperature sensor holding
  • FIG. 1 is a configuration diagram of a refrigeration apparatus 1 that uses an outdoor heat exchanger 25 that is a heat exchanger according to an embodiment of the present invention.
  • a refrigeration apparatus 1 is an air conditioner capable of cooling operation and heating operation, and a liquid refrigerant communication pipe for connecting an outdoor unit 3, an indoor unit 2, and the outdoor unit 3 and the indoor unit 2. 7 and a gas refrigerant communication pipe 9.
  • the indoor unit 2 includes an indoor heat exchanger 11 and an indoor fan 13.
  • the indoor heat exchanger 11 is a cross fin type heat exchanger, and can evaporate or condense the refrigerant flowing inside by heat exchange with indoor air, thereby cooling or heating indoor air.
  • the outdoor unit 3 mainly includes a compressor 21, a four-way switching valve 23, an outdoor heat exchanger 25, an expansion valve 27, an accumulator 29, a liquid side closing valve 37, and a gas side closing valve 39. ing. Furthermore, the outdoor unit 3 also has an outdoor fan 41.
  • the four-way switching valve 23 switches the direction of the refrigerant flow when switching between the cooling operation and the heating operation. During the cooling operation, the four-way switching valve 23 connects the discharge side of the compressor 21 and the gas side of the outdoor heat exchanger 25 and connects the suction side of the compressor 21 and the gas side closing valve 39. That is, this is the state indicated by the solid line in the four-way selector valve 23 in FIG.
  • the four-way switching valve 23 connects the discharge side of the compressor 21 and the gas side closing valve 39 and connects the suction side of the compressor 21 and the gas side of the outdoor heat exchanger 25. That is, this is the state indicated by the dotted line in the four-way selector valve 23 of FIG.
  • FIG. 2 is an external perspective view of the outdoor heat exchanger 25.
  • an outdoor heat exchanger 25 is a microchannel heat exchanger, and can condense or evaporate the refrigerant flowing inside by heat exchange with outdoor air. The detailed configuration of the outdoor heat exchanger 25 will be described later.
  • Expansion valve 27 The expansion valve 27 is connected to a pipe between the outdoor heat exchanger 25 and the liquid side shut-off valve 37 in order to adjust the refrigerant pressure and the refrigerant flow rate, so that the refrigerant can be used in both the cooling operation and the heating operation. Has the function of expanding.
  • the liquid side closing valve 37 and the gas side closing valve 39 are connected to the liquid refrigerant communication pipe 7 and the gas refrigerant communication pipe 9, respectively.
  • the liquid refrigerant communication pipe 7 connects between the liquid side of the indoor heat exchanger 11 of the indoor unit 2 and the liquid side shut-off valve 37 of the outdoor unit 3.
  • the gas refrigerant communication pipe 9 connects between the gas side of the indoor heat exchanger 11 of the indoor unit 2 and the gas side closing valve 39 of the outdoor unit 3.
  • the refrigerant flows in the order of the compressor 21, the outdoor heat exchanger 25, the expansion valve 27, and the indoor heat exchanger 11 during the cooling operation, and the compressor 21, the indoor heat exchanger 11, the expansion valve 27, and the outdoor heat during the heating operation.
  • a refrigeration circuit through which the refrigerant flows in the order of the exchanger 25 is formed.
  • FIG. 3 is a plan view of the outdoor unit 3, in which the top plate is removed and the inside is shown in a plan view.
  • FIG. 4 is a perspective view of the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan 41 that are disposed at regular positions. 5 shows the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan when the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan 41 arranged at regular positions are viewed from a different angle from FIG. FIG.
  • the outdoor unit 3 includes a vapor compression refrigeration cycle such as an outdoor fan 41, a compressor 21, an outdoor heat exchanger 25, and piping in a main body casing 91 that forms an outer shell.
  • a vapor compression refrigeration cycle such as an outdoor fan 41, a compressor 21, an outdoor heat exchanger 25, and piping in a main body casing 91 that forms an outer shell.
  • the members necessary for the configuration are housed.
  • the main body casing 91 has a substantially rectangular parallelepiped shape by a top plate 911 (see FIG. 5), a bottom plate 913, a base leg 915, a left side plate 917, a first front plate 919, a second front plate 921, a right side plate 923, and a suction grill 925. It is formed into a shape. Further, the top plate 911, the bottom plate 913, the base leg 915, the left side plate 917, the first front plate 919, the second front plate 921, and the right side plate 923 are steel sheet metal working members.
  • the inside of the main body casing 91 is divided into a machine chamber 91a and a blower chamber 91b by a vertically extending partition plate 927, the compressor 21 in the machine chamber 91a, the outdoor heat exchanger 25 and the outdoor fan 41 in the blower chamber 91b. Is stored.
  • FIG. 3 when the outdoor fan 41 is operating, air is sucked from the directions of B and C, and is exchanged with the outdoor heat exchanger 25 and then blown out in the direction of A.
  • the outdoor fan 41 is a propeller fan having a plurality of blades, and is located on the front side of the outdoor heat exchanger 25 in the blower chamber 91b, at the air outlet 919a (see FIG. 3). ).
  • the outdoor fan 41 is rotationally driven by a fan motor 41a.
  • the fan motor 41 a is attached to the motor fixing base 71.
  • the motor fixing base 71 is a structure in which an upper end flat part 711 and a lower end flat part 713 are connected by four support bars 715.
  • the fan motor 41 a is fixed to the central portion in the vertical direction of the motor fixing base 71.
  • the outdoor heat exchanger 25 includes a flat tube 251, an inlet header 253, heat transfer fins 255, an outlet header 257, an anticorrosion member 260, and a tube plate 270. Contains.
  • the flat tube 251 is formed in a meandering manner with aluminum or an aluminum alloy, and has a flat surface portion 251a serving as a heat transfer surface and a folded portion 251b. A plurality of microchannels (not shown) through which the refrigerant flows are formed inside the flat tube 251.
  • the flat tube 251 is disposed with the flat portion 251a facing up and down.
  • the four flat tubes 251 are folded five times so as to meander while maintaining an equal interval therebetween. This is referred to as a folded portion 251b.
  • the folded portion 251b protrudes from the fin mounting portion 250a to which the heat transfer fin 255 is mounted and is folded back to reach the fin mounting portion 250a again.
  • the first turn-up portion is the first turn-up portion 251ba
  • the second turn-up portion is the second turn-up portion 251bb
  • the third turn-up portion is the third turn-up portion 251bc
  • the fourth turn-up portion is the fourth turn-up portion.
  • the fifth folded portion 251bd is called the fifth folded portion 251be.
  • an inlet header 253 is disposed above the second folded portion 251bb, and an outlet header 257 is disposed below the fourth folded portion 251bd. Since the flat tube 251 protruding from the fin mounting portion 250a and connected to the inlet header 253 and the outlet header 257 does not have the folded portion 251b, these are referred to as non-folded portions 251c.
  • the heat transfer fin 255 is not mounted on the folded portion 251b and the non-folded portion 251c of the flat tube 251, it is referred to as a fin non-mounted portion 250b.
  • the fin non-mounting portion 250b hardly contributes to heat exchange between the passing air and the in-pipe refrigerant.
  • the heat transfer fins 255 are fins made of aluminum or aluminum alloy bent into a corrugated shape.
  • the heat transfer fins 255 are disposed in the ventilation space sandwiched between the flat portions 251 a of the flat tubes 251 adjacent to each other in the vertical direction, and the valley portions and the mountain portions are in contact with the flat portions 251 a of the flat tubes 251.
  • the trough part, the peak part, and the plane part 251a are brazed and welded.
  • the heat transfer fin 255 is brazed from a position away from the folded portion on one side to a position away from the folded portion on the other side in the flat portion 251a of the flat tube 251.
  • This region is called a fin mounting portion 250a, and the other area is called a fin non-mounting portion 250b.
  • the inlet header 253 is a hollow cylindrical tube.
  • the inlet header 253 is connected to one end of a plurality of flat tubes 251 arranged at regular intervals in the vertical direction. Further, the inlet header 253 has a function of supporting the flat tube 251, a function of guiding the refrigerant to the microchannel in the flat tube 251, and a function of collecting the refrigerant that has come out of the microchannel.
  • the exit header 257 is a hollow cylindrical tube similar to the entrance header 253.
  • the outlet header 257 is connected to the other end of the plurality of flat tubes 251 arranged at regular intervals in the vertical direction.
  • the outlet header 257 has a function of supporting the flat tube 251, a function of guiding the refrigerant to the microchannel in the flat tube 251, and a function of collecting the refrigerant that has come out of the microchannel. Have.
  • the refrigerant flowing into the upper left inlet header 253 is almost evenly distributed to the internal flow paths (microchannels) of the first, second, third and fourth flat tubes 251 from the top. It is distributed and flows toward the first folded portion 251ba, which is the first folded portion.
  • the refrigerant that has reached the first folding portion 251ba reverses the traveling direction by 180 ° and flows toward the second folding portion 251bb that is the next folding portion.
  • the refrigerant that has reached the second folded portion 251bb reverses its traveling direction by 180 ° and flows toward the third folded portion 251bc, which is the next folded portion.
  • the refrigerant that has reached the third folded portion 251bc reverses its traveling direction by 180 ° and flows toward the fourth folded portion 251bd, which is the next folded portion.
  • the refrigerant that has reached the fourth folded portion 251bd reverses its traveling direction by 180 ° and flows toward the fifth folded portion 251be, which is the next folded portion.
  • the refrigerant that has reached the fifth folded portion 251be reverses its traveling direction by 180 ° and flows toward the outlet header 257.
  • the refrigerant flowing in the flat tube 251 absorbs heat from the air flow flowing in the ventilation space via the heat transfer fins 255.
  • the refrigerant flowing in the flat tube 251 radiates heat to the air flow flowing in the ventilation space via the heat transfer fins 255.
  • Anticorrosion member 260 As shown in FIGS. 4 and 5, among the five folded portions of the flat tube 251, a plate-shaped anticorrosion is provided between the first folded portion 251 ba, the third folded portion 251 bc and the fifth folded portion 251 be and the left plate 917. A member 260 is attached.
  • the anticorrosion member 260 prevents the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be from being exposed to the air flow, thereby suppressing the progress of corrosion.
  • the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be among the five folded portions of the flat tube 251 are the side inlets of the left side plate 917 in the blower chamber 91b. Since it is close to 917c (see FIG. 5), it is exposed to airflow.
  • the second folded portion 251bb and the fourth folded portion 251bd are located in the machine room 91a and are not exposed to the air flow.
  • the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be that are exposed to the airflow corrode compared to the second folded portion 251bb and the fourth folded portion 251bd that are not exposed to the airflow. Progresses faster.
  • the potential decreases in the order of the flat tube 251, the anticorrosion member 260, and the brazing material. Therefore, the anticorrosion member 260 exhibits a sacrificial anticorrosion effect with respect to the flat tube 251, and the brazing material exhibits a sacrificial anticorrosion effect with respect to the anticorrosion member 260 and the flat tube 251.
  • Tube sheet 270 As shown in FIGS. 2 to 4, a tube plate 270 is attached to a fin non-mounting portion 250b opposite to the anticorrosion member 260 with the fin mounting portion 250a interposed therebetween. The tube plate 270 is disposed so as to sandwich the group of heat transfer fins 255 attached to the fin attachment part 250a with the anticorrosion member 260. The tube plate 270 is brazed to the flat tube 251 by the fin non-mounting portion 250b.
  • a partition plate 927 that divides the inside of the main body casing 91 into a machine chamber 91 a and a blower chamber 91 b extends from the boundary between the first front plate 919 and the second front plate 921, and the end thereof is the tube plate 270 of the outdoor heat exchanger 25. It approaches. And the clearance gap between the outdoor heat exchanger 25 and the back side of the main body casing 91 is divided by the tube sheet 270 into the machine room 91a and the air blower room 91b. That is, the tube sheet 270 also has a function as a partition member.
  • Temperature sensor holding unit 280 As shown in FIG. 2 and FIG. 4, a temperature sensor holding unit, which is approximately the center of the tube plate 270 and in which a temperature sensor is inserted between the second folded part 251 bb and the fourth folded part 251 bd of the flat tube 251. 280 is provided.
  • FIG. 6 is an enlarged side view of the periphery of the temperature sensor holding unit 280.
  • the temperature sensor holding part 280 is provided so as to contact the flat tube 251 located on the outermost side of the fourth folded part 251bd.
  • the temperature sensor 45 is fixed to the heat transfer tube of the heat exchanger with a clip, but the flat tube 251 is weaker than the conventional heat transfer tube, and fixing with the clip causes damage to the flat tube 251.
  • a temperature sensor holding unit 280 is provided on the tube plate 270.
  • the temperature sensor holding unit 280 may be fixed to the tube plate 270 after being manufactured on the tube plate 270, but in this embodiment, it is integrally formed using the material of the tube plate 270 when the tube plate 270 is manufactured.
  • FIG. 7 is a perspective view of the temperature sensor 45 and the temperature sensor holding part 280 before assembly.
  • the tube plate 270 needs two through holes 270a into which the second folded portion 251bb and the fourth folded portion 251bd of the flat tube 251 are inserted, and FIG. 7 shows the fourth folded portion therein.
  • a through hole 270a into which the portion 251bd is inserted is drawn.
  • the through hole 270a when the through hole 270a is formed by punching, the upper end of the through hole 270a is perforated so as not to be separated from the base material, and a “cantilevered” strip is formed. And the temperature sensor holding
  • the temperature sensor holding part 280 is located at the upper end part of the through hole 270a, when the fourth folded part 251bd of the flat pipe 251 is inserted into the through hole 270a, the flat tube 251 and the temperature sensor holding part 280 come close to each other. .
  • the temperature sensor insertion hole 280a of the temperature sensor holding part 280 penetrates in the horizontal direction, it is aligned in parallel with the flat portion of the flat tube 251. Therefore, the temperature sensor 45 and the flat portion of the flat tube 251 are only separated by the thickness of the temperature sensor holding portion 280, that is, the plate thickness of the tube plate 270, and the temperature of the refrigerant flowing in the flat tube 251 is accurately determined. Can be detected.
  • the temperature sensor 45 is held by the temperature sensor holding portion 280 provided on the tube plate 270 that is neither the flat tube 251 nor the heat transfer fin 255, so that the temperature sensor 45 is not damaged. Can be attached to the outdoor heat exchanger 25.
  • the temperature sensor holding unit 280 is disposed in the vicinity of the flat tube 251. Therefore, since the temperature sensor 45 is close to the flat tube 251, it is possible to accurately detect the heat exchanger temperature.
  • the temperature sensor holding portion 280 is formed in a hollow cylindrical shape to produce the temperature sensor insertion hole 280a, but is not limited thereto.
  • FIG. 8 is a perspective view before assembly of the temperature sensor 45 and the temperature sensor holding part 280 according to the modification.
  • the temperature sensor holding part 280 is manufactured only at the upper end of the through hole 270a. It is the same as the above embodiment until it is perforated so as not to be separated from the base material to form a “cantilevered” strip, but after that, the strip is not a cylinder but a clip. Molding.
  • the temperature sensor holding part 280 By making the temperature sensor holding part 280 into a clip shape, the temperature sensor 45 can be held using elasticity, so that the working efficiency when the temperature sensor 45 is incorporated into the temperature sensor holding part 280 can be improved. .
  • an aluminum heat exchanger can be employed as an outdoor heat exchanger, it is useful not only for air conditioners but also for heat pump water heaters.
  • Outdoor unit 21 Compressor 25 Outdoor heat exchanger 41 Blower 45 Temperature sensor 91 Main body casing (casing) 91a Machine room 91b Blower room 250a Fin mounting part 250b Fin non-mounting part 251 Flat tube 255 Heat transfer fin 270 Tube plate (plate member) 280 Sensor holding part

Abstract

The present invention addresses the problem of providing a heat exchanger to which a temperature sensor can be reliably attached without deforming or damaging a flat tube. In an outdoor heat exchanger (25), a temperature sensor (45) is retained by a temperature sensor retaining part (280) provided to a tube plate (270), not to a flat tube (251) or a heat transfer fin (255). Thus, the temperature sensor (45) can be mounted on the outdoor heat exchanger (25) without damaging the flat tube (251). Further, the temperature sensor retaining part (280) is disposed near the flat tube (251). Therefore, the temperature sensor (45) is adjacent to the flat tube (251), and thus the temperature of the heat exchanger can be accurately detected.

Description

熱交換器、及びそれを備えた冷凍装置の室外ユニットHeat exchanger and outdoor unit of refrigeration apparatus provided with the same
　本発明は、熱交換器に関し、特に、扁平管を用いた、冷凍装置の室外ユニット用として搭載される熱交換器に関する。 The present invention relates to a heat exchanger, and more particularly, to a heat exchanger that is mounted for an outdoor unit of a refrigeration apparatus using a flat tube.
　近年、冷凍装置の室外ユニットでは、例えば、特許文献１（特開２０１５－９０２３７号公報）に開示されているような、扁平管を蛇行状に折り返し、その折り返し部を除く平坦部にフィンを装着した熱交換器が室外熱交換器として採用されている。 In recent years, in an outdoor unit of a refrigeration apparatus, for example, as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2015-90237), a flat tube is folded back in a meandering manner, and fins are attached to flat portions other than the folded portion. This heat exchanger is used as an outdoor heat exchanger.
　当該熱交換器は、ヘッダーを有しないので温度センサを取り付ける場所がおのずと扁平管に絞られてくるが、扁平管は強度が強くなく、温度センサの取付け時に扁平管を変形させ、又は扁平管を傷つけてしまうおそれがある。 Since the heat exchanger does not have a header, the place where the temperature sensor is attached is naturally confined to the flat tube, but the flat tube is not strong enough to deform the flat tube when installing the temperature sensor, or There is a risk of hurting.
　本発明の課題は、扁平管を変形させたり、傷つけたりすることなく確実に温度センサが取り付けられる熱交換器を提供することにある。 An object of the present invention is to provide a heat exchanger to which a temperature sensor can be reliably attached without deforming or damaging a flat tube.
　本発明の第１観点に係る熱交換器は、扁平管と、伝熱フィンと、板部材と、温度センサ保持部とを備えている。伝熱フィンは、扁平管と接触するように装着される。板部材は、扁平管のうち伝熱フィンが装着されているフィン装着部を除くフィン非装着部に装着される。温度センサ保持部は、温度センサを保持させるために板部材に形成される、或いは板部材に固定される。 The heat exchanger according to the first aspect of the present invention includes a flat tube, a heat transfer fin, a plate member, and a temperature sensor holding unit. The heat transfer fin is mounted so as to come into contact with the flat tube. The plate member is attached to a fin non-attachment portion of the flat tube excluding the fin attachment portion to which the heat transfer fin is attached. The temperature sensor holding part is formed on the plate member or fixed to the plate member in order to hold the temperature sensor.
　この熱交換器では、温度センサが、扁平管でも伝熱フィンでもない板部材に設けられた温度センサ保持部に保持されるので、扁平管を損傷させることが回避される。 In this heat exchanger, since the temperature sensor is held by the temperature sensor holding portion provided on the plate member that is neither the flat tube nor the heat transfer fin, it is possible to avoid damaging the flat tube.
　本発明の第２観点に係る熱交換器は、第１観点に係る熱交換器であって、温度センサ保持部が扁平管の近傍に配置される。 The heat exchanger according to the second aspect of the present invention is the heat exchanger according to the first aspect, and the temperature sensor holding portion is disposed in the vicinity of the flat tube.
　この熱交換器では、温度センサ保持部が扁平管の近傍に配置されることによって温度センサが扁平管に近接するので、熱交換器温度を正確に検知することができる。 In this heat exchanger, since the temperature sensor is close to the flat tube by arranging the temperature sensor holding part in the vicinity of the flat tube, the heat exchanger temperature can be detected accurately.
　本発明の第３観点に係る熱交換器は、第１観点又は第２観点に係る熱交換器であって、扁平管と板部材とがロウ付けされている。 The heat exchanger according to the third aspect of the present invention is a heat exchanger according to the first aspect or the second aspect, and a flat tube and a plate member are brazed.
　この熱交換器では、扁平管と板部材とのエアギャップが解消されて伝熱性能が向上するので、熱交換器温度を正確に検知することができる。 In this heat exchanger, since the air gap between the flat tube and the plate member is eliminated and the heat transfer performance is improved, the heat exchanger temperature can be detected accurately.
　本発明の第４観点に係る熱交換器は、第１観点から第３観点のいずれか１つに係る熱交換器であって、温度センサ保持部が、温度センサを水平方向に挿入させる保持形状である。 The heat exchanger which concerns on the 4th viewpoint of this invention is a heat exchanger which concerns on any one of the 1st viewpoint to the 3rd viewpoint, Comprising: The temperature sensor holding | maintenance part hold | maintains the shape which makes a temperature sensor insert in a horizontal direction It is.
　この熱交換器では、扁平管の水平面に沿って温度センサを配置することが可能となるので、扁平管に対する温度センサの測定点が安定し、熱交換器温度を正確に検知することができる。 In this heat exchanger, since it becomes possible to arrange the temperature sensor along the horizontal plane of the flat tube, the measurement point of the temperature sensor with respect to the flat tube is stable, and the heat exchanger temperature can be detected accurately.
　本発明の第５観点に係る冷凍装置の室外ユニットは、第１観点から第４観点のいずれか１つに係る熱交換器を備えた冷凍装置の室外ユニットであって、ケーシングをさらに備えている。ケーシングは、圧縮機が配置される機械室と送風機が配置される送風機室とを有している。熱交換器は、送風機室に配置されている。板部材は、機械室と送風機室とを分ける仕切り部材の一部として機能する。 An outdoor unit of a refrigeration apparatus according to a fifth aspect of the present invention is an outdoor unit of a refrigeration apparatus including the heat exchanger according to any one of the first to fourth aspects, and further includes a casing. . The casing has a machine room in which a compressor is arranged and a blower room in which a blower is arranged. The heat exchanger is disposed in the blower chamber. The plate member functions as a part of a partition member that separates the machine room and the blower room.
　この室外ユニットでは、部品の機能の兼用化により、部品の大型化、部品点数の増加を抑制することができる。 In this outdoor unit, it is possible to suppress an increase in the size of parts and an increase in the number of parts by sharing the functions of the parts.
　本発明の第１観点に係る熱交換器では、温度センサが、扁平管でも伝熱フィンでもない板部材に設けられた温度センサ保持部に保持されるので、扁平管を損傷させることが回避される。 In the heat exchanger according to the first aspect of the present invention, since the temperature sensor is held by the temperature sensor holding portion provided on the plate member that is neither the flat tube nor the heat transfer fin, it is avoided that the flat tube is damaged. The
　本発明の第２観点に係る熱交換器では、温度センサ保持部が扁平管の近傍に配置されることによって温度センサが扁平管に近接するので、熱交換器温度を正確に検知することができる。 In the heat exchanger according to the second aspect of the present invention, since the temperature sensor is close to the flat tube by arranging the temperature sensor holding portion in the vicinity of the flat tube, the heat exchanger temperature can be accurately detected. .
　本発明の第３観点に係る熱交換器では、扁平管と板部材とのエアギャップが解消されて伝熱性能が向上するので、熱交換器温度を正確に検知することができる。 In the heat exchanger according to the third aspect of the present invention, since the air gap between the flat tube and the plate member is eliminated and the heat transfer performance is improved, the heat exchanger temperature can be accurately detected.
　本発明の第４観点に係る熱交換器では、扁平管の水平面に沿って温度センサを配置することが可能となるので、扁平管に対する温度センサの測定点が安定し、熱交換器温度を正確に検知することができる。 In the heat exchanger according to the fourth aspect of the present invention, it becomes possible to arrange the temperature sensor along the horizontal plane of the flat tube, so that the measurement points of the temperature sensor with respect to the flat tube are stable, and the heat exchanger temperature is accurately set. Can be detected.
　本発明の第５観点に係る冷凍装置の室外ユニットでは、部品の機能の兼用化により、部品の大型化、部品点数の増加を抑制することができる。 In the outdoor unit of the refrigeration apparatus according to the fifth aspect of the present invention, it is possible to suppress an increase in the size of the component and an increase in the number of components by sharing the functions of the components.
本発明の一実施形態に係る熱交換器である室外熱交換器を使用した冷凍装置の構成図。The block diagram of the freezing apparatus using the outdoor heat exchanger which is a heat exchanger which concerns on one Embodiment of this invention. 熱交換器の外観斜視図。The external appearance perspective view of a heat exchanger. 室外ユニットの平面図。The top view of an outdoor unit. 正規位置に配置された左側板、室外熱交換器及び室外ファンの斜視図。The perspective view of the left side board, outdoor heat exchanger, and outdoor fan which are arrange | positioned at a regular position. 正規位置に配置された左側板、室外熱交換器及び室外ファンを図４とは別の角度から視たときの左側板、室外熱交換器および室外ファンの斜視図。FIG. 5 is a perspective view of the left side plate, the outdoor heat exchanger, and the outdoor fan when the left side plate, the outdoor heat exchanger, and the outdoor fan that are disposed at regular positions are viewed from a different angle from that of FIG. 4. 温度センサ保持部の周辺の拡大側面図。The enlarged side view of the periphery of a temperature sensor holding | maintenance part. 温度センサ、及び温度センサ保持部の組立前の斜視図。The perspective view before the assembly of a temperature sensor and a temperature sensor holding | maintenance part. 温度センサ、及び変形例に係る温度センサ保持部の組立前の斜視図。The perspective view before the assembly of the temperature sensor which concerns on a temperature sensor and a modification.
　以下図面を参照しながら、本発明の実施形態について説明する。なお、以下の実施形態は、本発明の具体例であって、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.
　（１）冷凍装置１の構成
　図１は、本発明の一実施形態に係る熱交換器である室外熱交換器２５を使用した冷凍装置１の構成図である。図１において、冷凍装置１は、冷房運転及び暖房運転が可能な空気調和装置であり、室外ユニット３と、室内ユニット２と、室外ユニット３と室内ユニット２とを接続するための液冷媒連絡配管７及びガス冷媒連絡配管９とを備えている。 (1) Configuration of Refrigeration Apparatus 1 FIG. 1 is a configuration diagram of a refrigeration apparatus 1 that uses an outdoor heat exchanger 25 that is a heat exchanger according to an embodiment of the present invention. In FIG. 1, a refrigeration apparatus 1 is an air conditioner capable of cooling operation and heating operation, and a liquid refrigerant communication pipe for connecting an outdoor unit 3, an indoor unit 2, and the outdoor unit 3 and the indoor unit 2. 7 and a gas refrigerant communication pipe 9.
　（１－１）室内ユニット２
　図１において、室内ユニット２は、室内熱交換器１１と、室内ファン１３とを有している。室内熱交換器１１は、クロスフィン型熱交換器であり、室内空気との熱交換によって内部を流れる冷媒を蒸発又は凝縮させ、室内の空気を冷却又は加熱することができる。 (1-1) Indoor unit 2
In FIG. 1, the indoor unit 2 includes an indoor heat exchanger 11 and an indoor fan 13. The indoor heat exchanger 11 is a cross fin type heat exchanger, and can evaporate or condense the refrigerant flowing inside by heat exchange with indoor air, thereby cooling or heating indoor air.
　（１－２）室外ユニット３
　図１において、室外ユニット３は、主に、圧縮機２１、四路切換弁２３、室外熱交換器２５、膨張弁２７、アキュムレータ２９、液側閉鎖弁３７、及びガス側閉鎖弁３９を有している。さらに、室外ユニット３は室外ファン４１も有している。 (1-2) Outdoor unit 3
In FIG. 1, the outdoor unit 3 mainly includes a compressor 21, a four-way switching valve 23, an outdoor heat exchanger 25, an expansion valve 27, an accumulator 29, a liquid side closing valve 37, and a gas side closing valve 39. ing. Furthermore, the outdoor unit 3 also has an outdoor fan 41.
　（２）室外ユニット３の詳細構成
　（２－１）圧縮機２１、四路切換弁２３およびアキュムレータ２９
　圧縮機２１は、ガス冷媒を吸入して圧縮する。圧縮機２１の吸込口手前には、アキュムレータ２９が配置されており、圧縮機２１に液冷媒が直に吸い込まれないようになっている。 (2) Detailed configuration of outdoor unit 3 (2-1) Compressor 21, four-way selector valve 23 and accumulator 29
The compressor 21 sucks and compresses the gas refrigerant. An accumulator 29 is disposed in front of the suction port of the compressor 21 so that liquid refrigerant is not directly sucked into the compressor 21.
　四路切換弁２３は、冷房運転と暖房運転との切換時に、冷媒の流れの方向を切り換える。冷房運転時、四路切換弁２３は、圧縮機２１の吐出側と室外熱交換器２５のガス側とを接続するとともに圧縮機２１の吸入側とガス側閉鎖弁３９とを接続する。つまり、図１の四路切換弁２３内の実線で示された状態である。 The four-way switching valve 23 switches the direction of the refrigerant flow when switching between the cooling operation and the heating operation. During the cooling operation, the four-way switching valve 23 connects the discharge side of the compressor 21 and the gas side of the outdoor heat exchanger 25 and connects the suction side of the compressor 21 and the gas side closing valve 39. That is, this is the state indicated by the solid line in the four-way selector valve 23 in FIG.
　また、暖房運転時、四路切換弁２３は、圧縮機２１の吐出側とガス側閉鎖弁３９とを接続するとともに圧縮機２１の吸入側と室外熱交換器２５のガス側とを接続する。つまり、図１の四路切換弁２３内の点線で示された状態である。 Further, during the heating operation, the four-way switching valve 23 connects the discharge side of the compressor 21 and the gas side closing valve 39 and connects the suction side of the compressor 21 and the gas side of the outdoor heat exchanger 25. That is, this is the state indicated by the dotted line in the four-way selector valve 23 of FIG.
　（２－２）室外熱交換器２５
　図２は、室外熱交換器２５の外観斜視図である。図２において、室外熱交換器２５は、マイクロチャネル熱交換器であって、室外空気との熱交換によって内部を流れる冷媒を凝縮又は蒸発させることができる。なお、室外熱交換器２５の詳細構成については、後半で説明する。 (2-2) Outdoor heat exchanger 25
FIG. 2 is an external perspective view of the outdoor heat exchanger 25. In FIG. 2, an outdoor heat exchanger 25 is a microchannel heat exchanger, and can condense or evaporate the refrigerant flowing inside by heat exchange with outdoor air. The detailed configuration of the outdoor heat exchanger 25 will be described later.
　（２－３）膨張弁２７
　膨張弁２７は、冷媒圧力や冷媒流量の調節を行うために、室外熱交換器２５と液側閉鎖弁３７の間の配管に接続され、冷房運転時及び暖房運転時のいずれにおいても、冷媒を膨張させる機能を有している。 (2-3) Expansion valve 27
The expansion valve 27 is connected to a pipe between the outdoor heat exchanger 25 and the liquid side shut-off valve 37 in order to adjust the refrigerant pressure and the refrigerant flow rate, so that the refrigerant can be used in both the cooling operation and the heating operation. Has the function of expanding.
　（２－４）閉鎖弁３７，３９および冷媒連絡配管７，９
　液側閉鎖弁３７及びガス側閉鎖弁３９は、それぞれ、液冷媒連絡配管７及びガス冷媒連絡配管９に接続されている。液冷媒連絡配管７は、室内ユニット２の室内熱交換器１１の液側と室外ユニット３の液側閉鎖弁３７との間を接続している。ガス冷媒連絡配管９は、室内ユニット２の室内熱交換器１１のガス側と室外ユニット３のガス側閉鎖弁３９との間を接続している。 (2-4) Shut-off valves 37 and 39 and refrigerant communication pipes 7 and 9
The liquid side closing valve 37 and the gas side closing valve 39 are connected to the liquid refrigerant communication pipe 7 and the gas refrigerant communication pipe 9, respectively. The liquid refrigerant communication pipe 7 connects between the liquid side of the indoor heat exchanger 11 of the indoor unit 2 and the liquid side shut-off valve 37 of the outdoor unit 3. The gas refrigerant communication pipe 9 connects between the gas side of the indoor heat exchanger 11 of the indoor unit 2 and the gas side closing valve 39 of the outdoor unit 3.
　その結果、冷房運転時に圧縮機２１、室外熱交換器２５、膨張弁２７および室内熱交換器１１の順に冷媒が流れ、暖房運転時に圧縮機２１、室内熱交換器１１、膨張弁２７および室外熱交換器２５の順に冷媒が流れる冷凍回路が形成されている。 As a result, the refrigerant flows in the order of the compressor 21, the outdoor heat exchanger 25, the expansion valve 27, and the indoor heat exchanger 11 during the cooling operation, and the compressor 21, the indoor heat exchanger 11, the expansion valve 27, and the outdoor heat during the heating operation. A refrigeration circuit through which the refrigerant flows in the order of the exchanger 25 is formed.
　（２－５）本体ケーシング９１
　図３は、室外ユニット３の平面図であり、天板を取り除いて内部を平面的に図示している。また、図４は、正規位置に配置された左側板９１７、室外熱交換器２５及び室外ファン４１の斜視図である。さらに、図５は、正規位置に配置された左側板９１７、室外熱交換器２５及び室外ファン４１を図４とは別の角度から視たときの左側板９１７、室外熱交換器２５および室外ファン４１の斜視図である。 (2-5) Main casing 91
FIG. 3 is a plan view of the outdoor unit 3, in which the top plate is removed and the inside is shown in a plan view. FIG. 4 is a perspective view of the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan 41 that are disposed at regular positions. 5 shows the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan when the left side plate 917, the outdoor heat exchanger 25, and the outdoor fan 41 arranged at regular positions are viewed from a different angle from FIG. FIG.
　図３、図４及び図５において、室外ユニット３は、外殻を形成する本体ケーシング９１の内部に、室外ファン４１、圧縮機２１、室外熱交換器２５、及び配管等の蒸気圧縮式冷凍サイクルの構成に必要な部材を収納している。 3, 4, and 5, the outdoor unit 3 includes a vapor compression refrigeration cycle such as an outdoor fan 41, a compressor 21, an outdoor heat exchanger 25, and piping in a main body casing 91 that forms an outer shell. The members necessary for the configuration are housed.
　本体ケーシング９１の外形は、天板９１１（図５参照）、底板９１３、基礎脚９１５、左側板９１７、第１前板９１９、第２前板９２１、右側板９２３、及び吸込グリル９２５によって略直方体形状に形成されている。また、天板９１１、底板９１３、基礎脚９１５、左側板９１７、第１前板９１９、第２前板９２１、及び右側板９２３は鋼製の板金加工部材である。 The main body casing 91 has a substantially rectangular parallelepiped shape by a top plate 911 (see FIG. 5), a bottom plate 913, a base leg 915, a left side plate 917, a first front plate 919, a second front plate 921, a right side plate 923, and a suction grill 925. It is formed into a shape. Further, the top plate 911, the bottom plate 913, the base leg 915, the left side plate 917, the first front plate 919, the second front plate 921, and the right side plate 923 are steel sheet metal working members.
　本体ケーシング９１の内部は、鉛直に延びる仕切板９２７によって機械室９１ａと送風機室９１ｂとに分割されており、機械室９１ａに圧縮機２１が、送風機室９１ｂに室外熱交換器２５及び室外ファン４１が収納されている。図３において、室外ファン４１が稼動しているとき、空気はＢ及びＣの方向から吸い込まれ、室外熱交換器２５と熱交換した後、Ａの方向へ吹き出される。 The inside of the main body casing 91 is divided into a machine chamber 91a and a blower chamber 91b by a vertically extending partition plate 927, the compressor 21 in the machine chamber 91a, the outdoor heat exchanger 25 and the outdoor fan 41 in the blower chamber 91b. Is stored. In FIG. 3, when the outdoor fan 41 is operating, air is sucked from the directions of B and C, and is exchanged with the outdoor heat exchanger 25 and then blown out in the direction of A.
　（２－６）室外ファン
　図４及び図５において、室外ファン４１は、複数の翼を有するプロペラファンであり、送風機室９１ｂ内の室外熱交換器２５の前側で、吹出口９１９ａ（図３参照）に対向するように配置されている。室外ファン４１は、ファンモータ４１ａによって回転駆動される。 (2-6) Outdoor Fan In FIGS. 4 and 5, the outdoor fan 41 is a propeller fan having a plurality of blades, and is located on the front side of the outdoor heat exchanger 25 in the blower chamber 91b, at the air outlet 919a (see FIG. 3). ). The outdoor fan 41 is rotationally driven by a fan motor 41a.
　ファンモータ４１ａは、モータ固定台７１に取り付けられている。モータ固定台７１は、上端平面部７１１と下端平面部７１３とが４本の支持棒７１５で連結されている構造体である。ファンモータ４１ａはモータ固定台７１の鉛直方向中央部分に固定されている。 The fan motor 41 a is attached to the motor fixing base 71. The motor fixing base 71 is a structure in which an upper end flat part 711 and a lower end flat part 713 are connected by four support bars 715. The fan motor 41 a is fixed to the central portion in the vertical direction of the motor fixing base 71.
　（３）室外熱交換器２５の詳細構成
　図２に示すように、室外熱交換器２５は、扁平管２５１、入口ヘッダー２５３、伝熱フィン２５５、出口ヘッダー２５７、防食部材２６０及び管板２７０を含んでいる。 (3) Detailed Configuration of Outdoor Heat Exchanger 25 As shown in FIG. 2, the outdoor heat exchanger 25 includes a flat tube 251, an inlet header 253, heat transfer fins 255, an outlet header 257, an anticorrosion member 260, and a tube plate 270. Contains.
　（３－１）扁平管２５１
　扁平管２５１は、アルミニウムまたはアルミニウム合金で蛇行状に成形されており、伝熱面となる平面部２５１ａと、折り返し部２５１ｂとを有している。扁平管２５１の内部には、冷媒が流れる複数のマイクロチャネル（図示せず）を形成されている。扁平管２５１は、平面部２５１ａを上下に向けた状態で配置されている。 (3-1) Flat tube 251
The flat tube 251 is formed in a meandering manner with aluminum or an aluminum alloy, and has a flat surface portion 251a serving as a heat transfer surface and a folded portion 251b. A plurality of microchannels (not shown) through which the refrigerant flows are formed inside the flat tube 251. The flat tube 251 is disposed with the flat portion 251a facing up and down.
　本実施形態では、４つの扁平管２５１が互いに等間隔を維持したまま蛇行するように５回折り返されている。これを、折り返し部２５１ｂという。折り返し部２５１ｂは、伝熱フィン２５５が装着されるフィン装着部２５０ａから突出して折り返されて再びフィン装着部２５０ａに至る。 In the present embodiment, the four flat tubes 251 are folded five times so as to meander while maintaining an equal interval therebetween. This is referred to as a folded portion 251b. The folded portion 251b protrudes from the fin mounting portion 250a to which the heat transfer fin 255 is mounted and is folded back to reach the fin mounting portion 250a again.
　説明の便宜上、１回目の折り返し部を第１折り返し部２５１ｂａ、２回目の折り返し部を第２折り返し部２５１ｂｂ、３回目の折り返し部を第３折り返し部２５１ｂｃ、４回目の折り返し部を第４折り返し部２５１ｂｄ、５回目の折り返し部を第５折り返し部２５１ｂｅという。 For the convenience of explanation, the first turn-up portion is the first turn-up portion 251ba, the second turn-up portion is the second turn-up portion 251bb, the third turn-up portion is the third turn-up portion 251bc, and the fourth turn-up portion is the fourth turn-up portion. The fifth folded portion 251bd is called the fifth folded portion 251be.
　また、図２に示すように、第２折り返し部２５１ｂｂの上方に入口ヘッダー２５３が配置され、第４折り返し部２５１ｂｄの下方に出口ヘッダー２５７が配置されている。フィン装着部２５０ａから突出して入口ヘッダー２５３及び出口ヘッダー２５７に繋がる扁平管２５１には折り返し部２５１ｂは存在しないので、これらを非折り返し部２５１ｃという。 Further, as shown in FIG. 2, an inlet header 253 is disposed above the second folded portion 251bb, and an outlet header 257 is disposed below the fourth folded portion 251bd. Since the flat tube 251 protruding from the fin mounting portion 250a and connected to the inlet header 253 and the outlet header 257 does not have the folded portion 251b, these are referred to as non-folded portions 251c.
　扁平管２５１の折り返し部２５１ｂ及び非折り返し部２５１ｃには、伝熱フィン２５５が装着されないので、フィン非装着部２５０ｂという。フィン非装着部２５０ｂでは、通過する空気と管内冷媒との熱交換にほとんど貢献しない。 Since the heat transfer fin 255 is not mounted on the folded portion 251b and the non-folded portion 251c of the flat tube 251, it is referred to as a fin non-mounted portion 250b. The fin non-mounting portion 250b hardly contributes to heat exchange between the passing air and the in-pipe refrigerant.
　（３－２）伝熱フィン２５５
　伝熱フィン２５５は、波形に折り曲げられたアルミニウム製またはアルミニウム合金製のフィンである。伝熱フィン２５５は、上下に隣接する扁平管２５１の平面部２５１ａに挟まれた通風空間に配置され、谷部および山部が扁平管２５１の平面部２５１ａと接触している。なお、谷部と山部と平面部２５１ａとはロウ付け溶接されている。 (3-2) Heat transfer fin 255
The heat transfer fins 255 are fins made of aluminum or aluminum alloy bent into a corrugated shape. The heat transfer fins 255 are disposed in the ventilation space sandwiched between the flat portions 251 a of the flat tubes 251 adjacent to each other in the vertical direction, and the valley portions and the mountain portions are in contact with the flat portions 251 a of the flat tubes 251. In addition, the trough part, the peak part, and the plane part 251a are brazed and welded.
　伝熱フィン２５５は、扁平管２５１の平面部２５１ａのうち、片側の折り返し部から一定長さ離れた位置から反対側の折り返し部から一定長さ離れた位置までロウ付けされている。この領域をフィン装着部２５０ａとよび、それ以外をフィン非装着部２５０ｂとよぶ。 The heat transfer fin 255 is brazed from a position away from the folded portion on one side to a position away from the folded portion on the other side in the flat portion 251a of the flat tube 251. This region is called a fin mounting portion 250a, and the other area is called a fin non-mounting portion 250b.
　（３－３）入口ヘッダー２５３、出口ヘッダー２５７及び冷媒の流れ
　入口ヘッダー２５３は、中空円筒状の管である。入口ヘッダー２５３は、上下方向に等間隔を維持して並ぶ複数の扁平管２５１の一方の端と連結されている。また、入口ヘッダー２５３は、扁平管２５１を支持する機能と、冷媒を扁平管２５１内のマイクロチャネルに導く機能と、マイクロチャネルから出てきた冷媒を集合させる機能とを有している。 (3-3) Inlet header 253, outlet header 257, and refrigerant flow The inlet header 253 is a hollow cylindrical tube. The inlet header 253 is connected to one end of a plurality of flat tubes 251 arranged at regular intervals in the vertical direction. Further, the inlet header 253 has a function of supporting the flat tube 251, a function of guiding the refrigerant to the microchannel in the flat tube 251, and a function of collecting the refrigerant that has come out of the microchannel.
　出口ヘッダー２５７は、入口ヘッダー２５３と同様に、中空円筒状の管である。出口ヘッダー２５７は、上下方向に等間隔を維持して並ぶ複数の扁平管２５１の他方の端と連結されている。また、出口ヘッダー２５７は、入口ヘッダー２５３と同様に、扁平管２５１を支持する機能と、冷媒を扁平管２５１内のマイクロチャネルに導く機能と、マイクロチャネルから出てきた冷媒を集合させる機能とを有している。 The exit header 257 is a hollow cylindrical tube similar to the entrance header 253. The outlet header 257 is connected to the other end of the plurality of flat tubes 251 arranged at regular intervals in the vertical direction. Similarly to the inlet header 253, the outlet header 257 has a function of supporting the flat tube 251, a function of guiding the refrigerant to the microchannel in the flat tube 251, and a function of collecting the refrigerant that has come out of the microchannel. Have.
　（冷媒の流れ）
　図２において、左側上部の入口ヘッダー２５３に流入した冷媒は、上から１段目、２段目、３段目及び４段目の扁平管２５１の各内部流路（マイクロチャネル）へほぼ均等に分配され、最初の折り返し部である第１折り返し部２５１ｂａに向って流れる。 (Refrigerant flow)
In FIG. 2, the refrigerant flowing into the upper left inlet header 253 is almost evenly distributed to the internal flow paths (microchannels) of the first, second, third and fourth flat tubes 251 from the top. It is distributed and flows toward the first folded portion 251ba, which is the first folded portion.
　第１折り返し部２５１ｂａに到達した冷媒はそこで進行方向を１８０°反転し、次の折り返し部である第２折り返し部２５１ｂｂに向かって流れる。 The refrigerant that has reached the first folding portion 251ba reverses the traveling direction by 180 ° and flows toward the second folding portion 251bb that is the next folding portion.
　第２折り返し部２５１ｂｂに到達した冷媒はそこで進行方向を１８０°反転し、次の折り返し部である第３折り返し部２５１ｂｃに向かって流れる。 The refrigerant that has reached the second folded portion 251bb reverses its traveling direction by 180 ° and flows toward the third folded portion 251bc, which is the next folded portion.
　第３折り返し部２５１ｂｃに到達した冷媒はそこで進行方向を１８０°反転し、次の折り返し部である第４折り返し部２５１ｂｄに向かって流れる。 The refrigerant that has reached the third folded portion 251bc reverses its traveling direction by 180 ° and flows toward the fourth folded portion 251bd, which is the next folded portion.
　第４折り返し部２５１ｂｄに到達した冷媒はそこで進行方向を１８０°反転し、次の折り返し部である第５折り返し部２５１ｂｅに向かって流れる。 The refrigerant that has reached the fourth folded portion 251bd reverses its traveling direction by 180 ° and flows toward the fifth folded portion 251be, which is the next folded portion.
　第５折り返し部２５１ｂｅに到達した冷媒はそこで進行方向を１８０°反転し、出口ヘッダー２５７に向かって流れる。 The refrigerant that has reached the fifth folded portion 251be reverses its traveling direction by 180 ° and flows toward the outlet header 257.
　例えば、室外熱交換器２５が蒸発器として機能するとき、扁平管２５１内を流れる冷媒は、伝熱フィン２５５を介して通風空間を流れる空気流から吸熱する。室外熱交換器２５が凝縮器として機能するときは、扁平管２５１内を流れる冷媒は、伝熱フィン２５５を介して通風空間を流れる空気流へ放熱する。 For example, when the outdoor heat exchanger 25 functions as an evaporator, the refrigerant flowing in the flat tube 251 absorbs heat from the air flow flowing in the ventilation space via the heat transfer fins 255. When the outdoor heat exchanger 25 functions as a condenser, the refrigerant flowing in the flat tube 251 radiates heat to the air flow flowing in the ventilation space via the heat transfer fins 255.
　（３－４）防食部材２６０
　図４及び図５に示すように、扁平管２５１の５つの折り返し部のうち第１折り返し部２５１ｂａ、第３折り返し部２５１ｂｃ及び第５折り返し部２５１ｂｅと、左側板９１７との間に板状の防食部材２６０が取り付けられている。 (3-4) Anticorrosion member 260
As shown in FIGS. 4 and 5, among the five folded portions of the flat tube 251, a plate-shaped anticorrosion is provided between the first folded portion 251 ba, the third folded portion 251 bc and the fifth folded portion 251 be and the left plate 917. A member 260 is attached.
　防食部材２６０は、第１折り返し部２５１ｂａ、第３折り返し部２５１ｂｃ及び第５折り返し部２５１ｂｅが空気流に曝されることを防止して腐食の進行を抑制している。 The anticorrosion member 260 prevents the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be from being exposed to the air flow, thereby suppressing the progress of corrosion.
　例えば、防食部材２６０がない場合、扁平管２５１の５つの折り返し部のうち第１折り返し部２５１ｂａ、第３折り返し部２５１ｂｃ及び第５折り返し部２５１ｂｅは、送風機室９１ｂ内で左側板９１７の側面吸入口９１７ｃ（図５参照）に近接しているので、空気流に曝される。 For example, when the anticorrosion member 260 is not provided, the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be among the five folded portions of the flat tube 251 are the side inlets of the left side plate 917 in the blower chamber 91b. Since it is close to 917c (see FIG. 5), it is exposed to airflow.
　これに対し、第２折り返し部２５１ｂｂ及び第４折り返し部２５１ｂｄは、機械室９１ａ内に位置し、空気流に曝されることがない。このような場合、空気流に曝される第１折り返し部２５１ｂａ、第３折り返し部２５１ｂｃ及び第５折り返し部２５１ｂｅは、空気流に曝されない第２折り返し部２５１ｂｂ及び第４折り返し部２５１ｂｄに比べて腐食の進行が速くなる。 In contrast, the second folded portion 251bb and the fourth folded portion 251bd are located in the machine room 91a and are not exposed to the air flow. In such a case, the first folded portion 251ba, the third folded portion 251bc, and the fifth folded portion 251be that are exposed to the airflow corrode compared to the second folded portion 251bb and the fourth folded portion 251bd that are not exposed to the airflow. Progresses faster.
　そこで、室外熱交換器２５では、扁平管２５１、防食部材２６０、ロウ材の順に電位が小さくなる構成としている。それゆえ、扁平管２５１に対して防食部材２６０が犠牲防食効果を発揮し、防食部材２６０及び扁平管２５１に対してロウ材が犠牲防食効果を発揮する。 Therefore, in the outdoor heat exchanger 25, the potential decreases in the order of the flat tube 251, the anticorrosion member 260, and the brazing material. Therefore, the anticorrosion member 260 exhibits a sacrificial anticorrosion effect with respect to the flat tube 251, and the brazing material exhibits a sacrificial anticorrosion effect with respect to the anticorrosion member 260 and the flat tube 251.
　（３－５）管板２７０
　図２～図４に示すように、フィン装着部２５０ａを挟んで防食部材２６０と反対側となるフィン非装着部２５０ｂに管板２７０が取り付けられている。管板２７０は、フィン装着部２５０ａに装着された伝熱フィン２５５の群を防食部材２６０とで挟み込むように配置されている。管板２７０は、フィン非装着部２５０ｂで扁平管２５１とロウ付けされる。 (3-5) Tube sheet 270
As shown in FIGS. 2 to 4, a tube plate 270 is attached to a fin non-mounting portion 250b opposite to the anticorrosion member 260 with the fin mounting portion 250a interposed therebetween. The tube plate 270 is disposed so as to sandwich the group of heat transfer fins 255 attached to the fin attachment part 250a with the anticorrosion member 260. The tube plate 270 is brazed to the flat tube 251 by the fin non-mounting portion 250b.
　本体ケーシング９１の内部を機械室９１ａと送風機室９１ｂとに分ける仕切板９２７は、第１前板９１９と第２前板９２１との境界から延び、その終端は室外熱交換器２５の管板２７０寄りに至る。そして、室外熱交換器２５と本体ケーシング９１の背面側との隙間は、管板２７０によって機械室９１ａと送風機室９１ｂとに仕切られる。つまり、管板２７０は、仕切部材としての機能も有している。 A partition plate 927 that divides the inside of the main body casing 91 into a machine chamber 91 a and a blower chamber 91 b extends from the boundary between the first front plate 919 and the second front plate 921, and the end thereof is the tube plate 270 of the outdoor heat exchanger 25. It approaches. And the clearance gap between the outdoor heat exchanger 25 and the back side of the main body casing 91 is divided by the tube sheet 270 into the machine room 91a and the air blower room 91b. That is, the tube sheet 270 also has a function as a partition member.
　（３－５－１）温度センサ保持部２８０
　図２及び図４に示すように、管板２７０の略中央であって、扁平管２５１の第２折り返し部２５１ｂｂと第４折り返し部２５１ｂｄとの間に、温度センサが挿入される温度センサ保持部２８０が設けられている。 (3-5-1) Temperature sensor holding unit 280
As shown in FIG. 2 and FIG. 4, a temperature sensor holding unit, which is approximately the center of the tube plate 270 and in which a temperature sensor is inserted between the second folded part 251 bb and the fourth folded part 251 bd of the flat tube 251. 280 is provided.
　図６は、温度センサ保持部２８０の周辺の拡大側面図である。図６において、温度センサ保持部２８０は、第４折り返し部２５１ｂｄの最も外側に位置する扁平管２５１に接するように設けられている。 FIG. 6 is an enlarged side view of the periphery of the temperature sensor holding unit 280. In FIG. 6, the temperature sensor holding part 280 is provided so as to contact the flat tube 251 located on the outermost side of the fourth folded part 251bd.
　従来、温度センサ４５は熱交換器の伝熱管にクリップで固定されていたが、扁平管２５１は強度が従来の伝熱管に比べて弱く、クリップでの固定は扁平管２５１の損傷を招くので、本実施形態では管板２７０に温度センサ保持部２８０が設けられている。 Conventionally, the temperature sensor 45 is fixed to the heat transfer tube of the heat exchanger with a clip, but the flat tube 251 is weaker than the conventional heat transfer tube, and fixing with the clip causes damage to the flat tube 251. In the present embodiment, a temperature sensor holding unit 280 is provided on the tube plate 270.
　温度センサ保持部２８０は、管板２７０に製作後に管板２７０に固着させてもよいが、本実施形態では管板２７０の製作時に管板２７０の材料自体を用いて一体成形される。 The temperature sensor holding unit 280 may be fixed to the tube plate 270 after being manufactured on the tube plate 270, but in this embodiment, it is integrally formed using the material of the tube plate 270 when the tube plate 270 is manufactured.
　図７は、温度センサ４５、及び温度センサ保持部２８０の組立前の斜視図である。図７において、管板２７０には扁平管２５１の第２折り返し部２５１ｂｂ及び第４折り返し部２５１ｂｄが挿入されるための２つの貫通孔２７０ａが必要であり、図７にはその内の第４折り返し部２５１ｂｄが挿入される貫通孔２７０ａが描かれている。 FIG. 7 is a perspective view of the temperature sensor 45 and the temperature sensor holding part 280 before assembly. In FIG. 7, the tube plate 270 needs two through holes 270a into which the second folded portion 251bb and the fourth folded portion 251bd of the flat tube 251 are inserted, and FIG. 7 shows the fourth folded portion therein. A through hole 270a into which the portion 251bd is inserted is drawn.
　本実施形態では、打ち抜き加工により貫通孔２７０ａを形成する際、貫通孔２７０ａの上端だけが母材から分離しないように穿孔して、「片持ちはり」状の短冊部を成形する。そして、その短冊部を円筒状に巻き加工することによって、図７に示すような温度センサ保持部２８０が形成される。 In this embodiment, when the through hole 270a is formed by punching, the upper end of the through hole 270a is perforated so as not to be separated from the base material, and a “cantilevered” strip is formed. And the temperature sensor holding | maintenance part 280 as shown in FIG. 7 is formed by winding the strip part in a cylindrical shape.
　温度センサ保持部２８０は、貫通孔２７０ａの上端部に位置するので、貫通孔２７０ａに扁平管２５１の第４折り返し部２５１ｂｄが挿入されたとき、扁平管２５１と温度センサ保持部２８０とが近接する。 Since the temperature sensor holding part 280 is located at the upper end part of the through hole 270a, when the fourth folded part 251bd of the flat pipe 251 is inserted into the through hole 270a, the flat tube 251 and the temperature sensor holding part 280 come close to each other. .
　また、温度センサ保持部２８０の温度センサ挿入孔２８０ａは、水平方向に貫通しているので、扁平管２５１の平面部分と平行に並ぶ。したがって、温度センサ４５と扁平管２５１の平面部分とは、温度センサ保持部２８０の厚み、すなわち管板２７０の板厚分だけ離れているに過ぎず、扁平管２５１内を流れる冷媒の温度を正確に検知することができる。 Moreover, since the temperature sensor insertion hole 280a of the temperature sensor holding part 280 penetrates in the horizontal direction, it is aligned in parallel with the flat portion of the flat tube 251. Therefore, the temperature sensor 45 and the flat portion of the flat tube 251 are only separated by the thickness of the temperature sensor holding portion 280, that is, the plate thickness of the tube plate 270, and the temperature of the refrigerant flowing in the flat tube 251 is accurately determined. Can be detected.
　（４）特徴
　（４－１）
　室外熱交換器２５では、温度センサ４５が扁平管２５１でも伝熱フィン２５５でもない管板２７０に設けられた温度センサ保持部２８０に保持されるので、扁平管２５１を損傷させることなく温度センサ４５を室外熱交換器２５に装着することできる。 (4) Features (4-1)
In the outdoor heat exchanger 25, the temperature sensor 45 is held by the temperature sensor holding portion 280 provided on the tube plate 270 that is neither the flat tube 251 nor the heat transfer fin 255, so that the temperature sensor 45 is not damaged. Can be attached to the outdoor heat exchanger 25.
　（４－２）
　室外熱交換器２５では、温度センサ保持部２８０が扁平管２５１の近傍に配置される。それゆえ、温度センサ４５が扁平管２５１に近接するので、熱交換器温度を正確に検知することができる。 (4-2)
In the outdoor heat exchanger 25, the temperature sensor holding unit 280 is disposed in the vicinity of the flat tube 251. Therefore, since the temperature sensor 45 is close to the flat tube 251, it is possible to accurately detect the heat exchanger temperature.
　（４－３）
　室外熱交換器２５では、扁平管２５１と管板２７０とのエアギャップが解消されて伝熱性能が向上するので、熱交換器温度を正確に検知することができる。 (4-3)
In the outdoor heat exchanger 25, since the air gap between the flat tube 251 and the tube plate 270 is eliminated and the heat transfer performance is improved, the heat exchanger temperature can be accurately detected.
　（４－４）
　室外熱交換器２５では、扁平管２５１の水平部に沿って温度センサ４５を配置することができるので、扁平管２５１に対する温度センサ４５の測定点が安定し、熱交換器温度を正確に検知することができる。 (4-4)
In the outdoor heat exchanger 25, since the temperature sensor 45 can be disposed along the horizontal portion of the flat tube 251, the measurement point of the temperature sensor 45 with respect to the flat tube 251 is stabilized, and the heat exchanger temperature is accurately detected. be able to.
　（４－５）
　冷凍装置の室外ユニット３では、部品の機能の兼用化により、部品の大型化、部品点数の増加を抑制することができる。 (4-5)
In the outdoor unit 3 of the refrigeration apparatus, an increase in the size of the component and an increase in the number of components can be suppressed by sharing the functions of the components.
　（５）管板２７０の変形例
　上記実施形態では、温度センサ保持部２８０は中空円筒状に成形して温度センサ挿入孔２８０ａを製作しているが、これに限定されるものではない。 (5) Modified Example of Tube Sheet 270 In the above embodiment, the temperature sensor holding portion 280 is formed in a hollow cylindrical shape to produce the temperature sensor insertion hole 280a, but is not limited thereto.
　例えば、図８は、温度センサ４５、及び変形例に係る温度センサ保持部２８０の組立前の斜視図であるが、図８において、温度センサ保持部２８０の製作は、貫通孔２７０ａの上端だけが母材から分離しないように穿孔して「片持ちはり」状の短冊部を成形する、というところまでは上記実施形態と同様であるが、その後、短冊部を円筒状にではなく、クリップ状に成形している。 For example, FIG. 8 is a perspective view before assembly of the temperature sensor 45 and the temperature sensor holding part 280 according to the modification. In FIG. 8, the temperature sensor holding part 280 is manufactured only at the upper end of the through hole 270a. It is the same as the above embodiment until it is perforated so as not to be separated from the base material to form a “cantilevered” strip, but after that, the strip is not a cylinder but a clip. Molding.
　温度センサ保持部２８０をクリップ状にすることで、弾性を利用して温度センサ４５を保持することができるので、温度センサ４５を温度センサ保持部２８０へ組み込む際の作業効率の向上させることができる。 By making the temperature sensor holding part 280 into a clip shape, the temperature sensor 45 can be held using elasticity, so that the working efficiency when the temperature sensor 45 is incorporated into the temperature sensor holding part 280 can be improved. .
　以上のように、本発明によれば、アルミ製の熱交換器を室外熱交換器として採用することができるので、空気調和機に限らずヒートポンプ式給湯機にも有用である。 As described above, according to the present invention, since an aluminum heat exchanger can be employed as an outdoor heat exchanger, it is useful not only for air conditioners but also for heat pump water heaters.
３　　　　　室外ユニット
２１　　　　圧縮機
２５　　　　室外熱交換器
４１　　　　送風機
４５　　　　温度センサ
９１　　　　本体ケーシング（ケーシング）
９１ａ　　　機械室
９１ｂ　　　送風機室
２５０ａ　　フィン装着部
２５０ｂ　　フィン非装着部
２５１　　　扁平管
２５５　　　伝熱フィン
２７０　　　管板（板部材）
２８０　　　センサ保持部 3 Outdoor unit 21 Compressor 25 Outdoor heat exchanger 41 Blower 45 Temperature sensor 91 Main body casing (casing)
91a Machine room 91b Blower room 250a Fin mounting part 250b Fin non-mounting part 251 Flat tube 255 Heat transfer fin 270 Tube plate (plate member)
280 Sensor holding part
特開２０１５－９０２３７号公報Japanese Patent Laying-Open No. 2015-90237

Claims (5)

  1. 　扁平管（２５１）と、
    　前記扁平管（２５１）と接触するように装着される伝熱フィン（２５５）と、
    　前記扁平管（２５１）のうち前記伝熱フィン（２５５）が装着されているフィン装着部（２５０ａ）を除くフィン非装着部（２５０ｂ）に装着される板部材（２７０）と、
    　温度センサ（４５）を保持させるために前記板部材（２７０）に形成される或いは前記板部材（２７０）に固定される温度センサ保持部（２８０）と、
    を備える熱交換器（２５）。     A flat tube (251);
    A heat transfer fin (255) mounted to contact the flat tube (251);
    A plate member (270) mounted on the non-finned portion (250b) excluding the fin mounted portion (250a) on which the heat transfer fin (255) is mounted on the flat tube (251);
    A temperature sensor holding part (280) formed on the plate member (270) or fixed to the plate member (270) to hold the temperature sensor (45);
    A heat exchanger (25) comprising:
  2. 　前記温度センサ保持部（２８０）は、前記扁平管（２５１）の近傍に配置される、
    請求項１に記載の熱交換器（２５）     The temperature sensor holding part (280) is disposed in the vicinity of the flat tube (251).
    Heat exchanger (25) according to claim 1
  3. 　前記扁平管（２５１）と前記板部材（２７０）とはロウ付けされる、
    請求項１又は請求項２に記載の熱交換器（２５）。     The flat tube (251) and the plate member (270) are brazed.
    The heat exchanger (25) according to claim 1 or claim 2.
  4. 　前記温度センサ保持部（２８０）は、前記温度センサ（４５）を水平方向に挿入させる保持形状である、
    請求項１から請求項３のいずれか１項に記載の熱交換器（２５）。     The temperature sensor holding part (280) has a holding shape for inserting the temperature sensor (45) in a horizontal direction.
    The heat exchanger (25) according to any one of claims 1 to 3.
  5. 　請求項１から請求項４のいずれか１項に記載の熱交換器を備えた冷凍装置の室外ユニットであって、
    　圧縮機（２１）が配置される機械室（９１ａ）と送風機（４１）が配置される送風機室（９１ｂ）とを有するケーシング（９１）をさらに備え、
    　前記熱交換器（２５）は前記送風機室（９１ｂ）に配置され、
    　前記板部材（２７０）は、前記機械室（９１ａ）と前記送風機室（９１ｂ）とを分ける仕切り部材の一部として機能する、
    冷凍装置の室外ユニット（３）。     An outdoor unit of a refrigeration apparatus comprising the heat exchanger according to any one of claims 1 to 4,
    It further comprises a casing (91) having a machine room (91a) in which the compressor (21) is arranged and a fan room (91b) in which the blower (41) is arranged,
    The heat exchanger (25) is disposed in the blower chamber (91b),
    The plate member (270) functions as a part of a partition member that divides the machine room (91a) and the blower room (91b).
    The outdoor unit (3) of the refrigeration apparatus.
PCT/JP2017/002376 2016-01-29 2017-01-24 Heat exchanger and refrigeration device outdoor unit equipped with same WO2017130976A1 (en)

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JP2015055464A (en) * 2013-09-13 2015-03-23 株式会社富士通ゼネラル Air conditioner outdoor unit

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JPS4985121A (en) * 1972-12-21 1974-08-15
JPS5629914A (en) * 1979-08-18 1981-03-25 Iseki Agricult Mach Binder on sedge harvester
JPH01111011A (en) * 1987-10-23 1989-04-27 Unitika Ltd Production of nylon 46 fiber
JPH01203890A (en) * 1988-02-08 1989-08-16 Nippon Denso Co Ltd Heat exchanger
JP2011231961A (en) * 2010-04-26 2011-11-17 Sharp Corp Heat exchange device
WO2014091782A1 (en) * 2012-12-10 2014-06-19 三菱電機株式会社 Flat tube heat exchange apparatus, and outdoor unit for air conditioner provided with same
JP2015055464A (en) * 2013-09-13 2015-03-23 株式会社富士通ゼネラル Air conditioner outdoor unit

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