WO2021130952A1 - 熱交換器、室外機及び冷凍サイクル装置 - Google Patents

熱交換器、室外機及び冷凍サイクル装置 Download PDF

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Publication number
WO2021130952A1
WO2021130952A1 PCT/JP2019/051089 JP2019051089W WO2021130952A1 WO 2021130952 A1 WO2021130952 A1 WO 2021130952A1 JP 2019051089 W JP2019051089 W JP 2019051089W WO 2021130952 A1 WO2021130952 A1 WO 2021130952A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
heat exchanger
transfer tubes
heat
header
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2019/051089
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English (en)
French (fr)
Japanese (ja)
Inventor
森田　敦
前田　剛志
暁 八柳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to EP19957198.5A priority Critical patent/EP4083556A4/en
Priority to JP2021566678A priority patent/JP7224498B2/ja
Priority to PCT/JP2019/051089 priority patent/WO2021130952A1/ja
Publication of WO2021130952A1 publication Critical patent/WO2021130952A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • F28D1/0535—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 the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/02—Non-rotary, e.g. reciprocated, appliances having brushes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle

Definitions

  • the present invention relates to a heat exchanger, an outdoor unit equipped with the heat exchanger, and a refrigerating cycle device equipped with the heat exchanger or the outdoor unit, and particularly removes deposits such as frost adhering to the heat exchanger. It is about the configuration to be done.
  • the heat exchanger used for the outdoor unit of the refrigeration cycle device may have deposits such as frost or dust depending on the environment in which it is installed. Therefore, as a method of removing the frost adhering to the heat exchanger during the operation of the refrigeration cycle device, for example, during the heating operation of the air conditioner, a method of mechanically removing the frost adhering to the fins has been proposed (patented).
  • the heat exchanger of Patent Document 1 has a linear convex portion formed in parallel with the edge of the fin located on the upstream side of the air flow, and further abuts on the convex portion in the vertical direction. Equipped with a movable brush. The heat exchanger of Patent Document 1 is said to be able to remove the frost formed on the front edge of the fin by a brush.
  • the heat exchanger of Patent Document 1 is a fin tube type heat exchanger provided with a circular tube, and removes only the frost adhering to the front edge of the fin on the windward side of the air flow. .. Therefore, the heat exchanger of Patent Document 1 cannot remove the frost when it is frosted on the heat transfer tube located inside the heat exchanger. Further, the heat exchanger of Patent Document 1 cannot remove deposits such as dust adhering to the heat transfer tube located inside the heat exchanger. When deposits are attached to the heat exchanger, the heat exchange performance of the heat exchanger may deteriorate.
  • the heat exchanger requires a defrosting operation in which the circulation direction of the refrigerant is switched and defrosting is performed using the latent heat of condensation of the refrigerant as used in a general air conditioner.
  • the heat exchanger cannot perform the heating operation during the defrosting operation, there is a risk of causing discomfort to the user regarding the sensible temperature and the like.
  • the present invention is for solving the above-mentioned problems, and provides a heat exchanger, an outdoor unit, and a refrigeration cycle device capable of removing deposits such as frost that have entered the inside of the heat exchanger.
  • the purpose is.
  • the heat exchanger according to the present invention is a plurality of heat transfer tubes for circulating a first heat exchange fluid, and is a heat exchange unit having a plurality of heat transfer tubes arranged at intervals from each other and a first heat exchange. It is provided with a removing device that moves between adjacent heat transfer tubes of a plurality of heat transfer tubes along a first direction that is a fluid flow direction.
  • the outdoor unit according to the present invention includes a heat exchanger according to the present invention, a blower that forms a flow of a second heat exchange fluid that circulates between adjacent heat transfer tubes of a plurality of heat transfer tubes, and a heat exchanger and a blower. It is equipped with a housing that houses and.
  • the refrigeration cycle device according to the present invention is provided with the heat exchanger according to the present invention or the outdoor unit according to the present invention.
  • the heat exchanger includes a removing device that moves between adjacent heat transfer tubes of a plurality of heat transfer tubes along the first direction, which is the flow direction of the first heat exchange fluid. ..
  • the removing device is arranged between the heat transfer tubes inside the heat exchanger, and the removing device arranged between the heat transfer tubes moves along the heat transfer tube to attach frost and the like adhering to the heat exchange part.
  • frost and the like adhering to the heat exchange part The kimono is removed. Therefore, the heat exchanger can remove deposits such as frost that have entered the inside of the heat exchanger by the frost removing device.
  • FIG. 5 is a top view of the outdoor heat exchanger according to the first embodiment as viewed from the fourth direction. This is a first modification of the removal portion shown in FIG. This is a second modification of the removal portion shown in FIG. This is a third modification of the removal portion shown in FIG.
  • FIG. It is a conceptual diagram which shows the structure of the outdoor unit which concerns on Embodiment 2. It is a conceptual diagram which shows the structure of the outdoor heat exchanger which concerns on Embodiment 3.
  • FIG. It is a block diagram which shows the structural example concerning the control of the outdoor heat exchanger which concerns on Embodiment 4.
  • FIG. It is a conceptual diagram which shows the structure of the outdoor heat exchanger which concerns on Embodiment 5. It is a conceptual diagram which shows the structure of the 1st modification of the outdoor heat exchanger which concerns on Embodiment 5. It is a conceptual diagram which shows the structure of the 2nd modification of the outdoor heat exchanger which concerns on Embodiment 5.
  • FIG. 1 is a refrigerant circuit diagram showing a configuration of a refrigeration cycle device 100 provided with an outdoor heat exchanger 105 according to the first embodiment.
  • the arrow indicated by the dotted line indicates the direction in which the refrigerant flows in the refrigerant circuit 110 during the cooling operation
  • the arrow indicated by the solid line indicates the direction in which the refrigerant flows during the heating operation. ..
  • the refrigeration cycle apparatus 100 provided with the outdoor heat exchanger 105 will be described with reference to FIG.
  • the air conditioner is exemplified as the refrigerating cycle device 100, but the refrigerating cycle device 100 is, for example, refrigerating a refrigerator or a freezer, a vending machine, an air conditioner, a refrigerating device, a water heater, or the like. Used for applications or air conditioning applications.
  • the illustrated refrigerant circuit 110 is an example, and the configuration of circuit elements and the like is not limited to the contents described in the embodiment, and can be appropriately changed within the scope of the technology according to the embodiment. ..
  • the refrigeration cycle device 100 has a refrigerant circuit 110 in which a compressor 101, a flow path switching device 102, an indoor heat exchanger 103, a decompression device 104, and an outdoor heat exchanger 105 are connected in a ring shape via a refrigerant pipe. ..
  • the refrigeration cycle device 100 includes an outdoor unit 106 and an indoor unit 107.
  • the outdoor unit 106 includes a compressor 101, a flow path switching device 102, an outdoor heat exchanger 105 and a decompression device 104, and an outdoor blower 108 that supplies outdoor air to the outdoor heat exchanger 105.
  • the indoor unit 107 includes an indoor heat exchanger 103 and an indoor blower 109 that supplies air to the indoor heat exchanger 103.
  • the outdoor unit 106 and the indoor unit 107 are connected via two extension pipes 111 and 112 which are a part of the refrigerant pipe.
  • the compressor 101 is a fluid machine that compresses and discharges the sucked refrigerant.
  • the flow path switching device 102 is, for example, a four-way valve, and is a device that switches the flow path of the refrigerant between the cooling operation and the heating operation by controlling the control device (not shown).
  • the refrigerant is the first heat exchange fluid.
  • the first heat exchange fluid is, for example, an HFC refrigerant, an HC refrigerant, an HFO refrigerant, or a mixed refrigerant obtained by combining them.
  • the indoor heat exchanger 103 is a heat exchanger that exchanges heat between the refrigerant circulating inside and the indoor air supplied by the indoor blower 109.
  • the indoor heat exchanger 103 functions as a condenser during the heating operation and as an evaporator during the cooling operation.
  • the pressure reducing device 104 is, for example, an expansion valve, which is a device for reducing the pressure of the refrigerant.
  • an electronic expansion valve whose opening degree is adjusted by the control of the control device can be used.
  • the outdoor heat exchanger 105 is a heat exchanger that exchanges heat between the refrigerant circulating inside and the air supplied by the outdoor blower 108.
  • the outdoor heat exchanger 105 functions as an evaporator during the heating operation and as a condenser during the cooling operation.
  • the air supplied by the outdoor blower 108 is an example of a second heat exchange fluid.
  • the low-pressure gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 105 and evaporates by heat exchange with the air supplied by the outdoor blower 108.
  • the evaporated refrigerant becomes a low-pressure gas state and is sucked into the compressor 101.
  • frost adheres to the outdoor heat exchanger 105.
  • the refrigerant flowing through the refrigerant circuit 110 flows in the opposite direction to that during the heating operation. That is, during the cooling operation of the refrigeration cycle device 100, the high-pressure and high-temperature gas-state refrigerant discharged from the compressor 101 flows into the outdoor heat exchanger 105 via the flow path switching device 102 and is supplied by the outdoor blower 108. It exchanges heat with the air and condenses.
  • the condensed refrigerant is in a high-pressure liquid state, flows out of the outdoor heat exchanger 105, and is in a low-pressure gas-liquid two-phase state by the decompression device 104.
  • the low-pressure gas-liquid two-phase refrigerant flows into the indoor heat exchanger 103 and evaporates by heat exchange with the air supplied by the indoor blower 109.
  • the evaporated refrigerant becomes a low-pressure gas state and is sucked into the compressor 101.
  • FIG. 2 is a perspective view showing a configuration of a main part of the outdoor heat exchanger 105 according to the first embodiment.
  • FIG. 3 is a conceptual diagram of the outdoor heat exchanger 105 according to the first embodiment as viewed from the side.
  • the arrow RF indicates the flow of the refrigerant flowing into the outdoor heat exchanger 105 or flowing out from the outdoor heat exchanger 105.
  • the arrow AR indicates the flow of the second heat exchange fluid.
  • the arrow MD is the flow direction of the first heat exchange fluid.
  • the arrow MD indicates the moving direction of the removing device 10 that moves along the extending direction of the heat transfer tube 60.
  • the outdoor heat exchanger 105 according to the first embodiment will be described with reference to FIGS. 2 and 3.
  • the outdoor heat exchanger 105 removes the heat exchange unit 55 that exchanges heat between the first heat exchange fluid and the second heat exchange fluid, and frost and other deposits adhering to the heat exchange unit 55. It has a removing device 10.
  • the heat exchange unit 55 is a plurality of heat transfer tubes 60 through which the first heat exchange fluid flows, and has a plurality of heat transfer tubes 60 arranged at intervals from each other.
  • the heat exchange unit 55 is located between a first heat exchange fluid such as a refrigerant flowing inside the plurality of heat transfer tubes 60 and a second heat exchange fluid such as air existing around the plurality of heat transfer tubes 60. Have heat exchange performed.
  • the heat exchange unit 55 has headers 70 connected to both ends in the extending direction of the plurality of heat transfer tubes 60.
  • the header 70 has a first header 71 and a second header 72.
  • the first header 71 is connected to one end of each of the plurality of heat transfer tubes 60 in the extending direction.
  • the second header 72 is connected to the other end of each of the plurality of heat transfer tubes 60 in the extending direction.
  • the heat exchange unit 55 has a plurality of heat transfer tubes 60 between the first header 71 and the second header 72.
  • the outdoor heat exchanger 105 includes a first refrigerant connecting pipe 41 attached to the axial end of the first header 71 and a second refrigerant connecting pipe attached to the axial end of the second header 72. It has 42 and.
  • the first refrigerant connecting pipe 41 and the second refrigerant connecting pipe 42 are connected to the pipes constituting the refrigerant circuit 110.
  • the first heat exchange fluid moves between the pipes constituting the refrigerant circuit 110 and the header 70 via the first refrigerant connecting pipe 41 and the second refrigerant connecting pipe 42.
  • Each of the plurality of heat transfer tubes 60 allows the first heat exchange fluid to flow inside.
  • Each of the plurality of heat transfer tubes 60 extends between the first header 71 and the second header 72.
  • Each of the plurality of heat transfer tubes 60 is arranged at intervals from each other, and is parallel to the axial direction which is the extending direction of the header 70.
  • the plurality of heat transfer tubes 60 are arranged so as to face each other.
  • a gap serving as a flow path for the second heat exchange fluid is formed between two adjacent heat transfer tubes 60 among the plurality of heat transfer tubes 60.
  • the arrangement direction of the plurality of heat transfer tubes 60 and the extension direction of the header 70 are defined as the second direction D2. That is, the second direction D2 is the direction in which the plurality of heat transfer tubes 60 are lined up. In the outdoor heat exchanger 105, the arrangement direction of the plurality of heat transfer tubes 60, which is the second direction D2, is the horizontal direction. However, the arrangement direction of the plurality of heat transfer tubes 60 in the second direction D2 is not limited to the horizontal direction, and may be a direction inclined with respect to the horizontal direction or a vertical direction.
  • the extending direction of the plurality of heat transfer tubes 60 is defined as the first direction D1.
  • the first direction D1 is the flow direction of the first heat exchange fluid.
  • the extension direction of the plurality of heat transfer tubes 60, which is the first direction D1 is the vertical direction.
  • the extending direction of the plurality of heat transfer tubes 60 in the first direction D1 is not limited to the vertical direction, and may be a direction inclined with respect to the vertical direction or a horizontal direction.
  • the heat transfer tubes 60 adjacent to each other among the plurality of heat transfer tubes 60 are not connected to each other by the heat transfer promoting member.
  • the heat transfer promoting member is a member that promotes heat transfer, and is, for example, a plate fin, a corrugated fin, or the like. Therefore, the outdoor heat exchanger 105 is a so-called finless heat exchanger.
  • the heat exchange unit 55 may have a region in which adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60 are not connected to each other by a heat transfer promoting member.
  • the outdoor heat exchanger 105 may be a heat exchanger provided with a heat transfer promoting member that connects adjacent heat transfer tubes 60 to a part of the heat exchange unit 55, and a part of the heat exchange unit 55 is finless. It may be a heat exchanger.
  • the refrigerant flows through the inside of the heat transfer tubes 60 from one end to the other end in the extension direction in each of the plurality of heat transfer tubes 60. Further, when the outdoor heat exchanger 105 functions as a condenser of the refrigeration cycle device 100, the refrigerant flows through the inside of the heat transfer tubes 60 from the other end in the extension direction toward one end in each of the plurality of heat transfer tubes 60.
  • FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 showing the configuration of an example of the heat transfer tube 60.
  • the heat transfer tube 60 is a flat tube having a unidirectionally flat cross-sectional shape such as an oval shape.
  • the heat transfer tube 60 is not limited to a flat tube, and may be, for example, a circular tube.
  • the main material constituting the heat transfer tube 60 is aluminum, but the main material constituting the heat transfer tube 60 is not limited to aluminum.
  • the heat transfer tube 60 has a first side end portion 60a and a second side end portion 60b, and a pair of flat surfaces 60c and flat surfaces 60d.
  • the first side end portion 60a is formed so as to be convex outward between one end portion of the flat surface 60c and one end portion of the flat surface 60d.
  • the second side end portion 60b is formed so as to be convex outward between the other end portion of the flat surface 60c and the other end portion of the flat surface 60d.
  • the first side end portion 60a is a side end portion arranged on the windward side, that is, on the front edge side in the flow of air passing through the outdoor heat exchanger 105.
  • the second side end portion 60b is a side end portion arranged on the leeward side, that is, the trailing edge side in the flow of air passing through the outdoor heat exchanger 105.
  • the direction perpendicular to the extending direction of the heat transfer tube 60 and along the flat surface 60c and the flat surface 60d may be referred to as the major axis direction of the heat transfer tube 60.
  • the major axis direction of the heat transfer tube 60 is the third direction D3, and the minor axis direction is the second direction D2.
  • the third direction D3 is a direction that intersects a plane parallel to the second direction D2 and the first direction D1.
  • the second heat exchange fluid flows in the second direction D2 and the third direction D3 orthogonal to the first direction D1.
  • the heat transfer tube 60 is formed with a plurality of refrigerant passages 62 arranged between the first side end portion 60a and the second side end portion 60b along the long axis direction.
  • the heat transfer tube 60 is a flat perforated tube in which a plurality of refrigerant passages 62 through which the refrigerant flows are arranged in the air flow direction.
  • Each of the plurality of refrigerant passages 62 is formed so as to extend in parallel with the extending direction of the heat transfer tube 60.
  • Each of the partition walls 63 between the adjacent refrigerant passages 62 is continuous to both ends in the extending direction of the heat transfer tube 60.
  • the cross-sectional shape and the number of formed refrigerant passages 62 are not limited to the illustrated embodiment, and may be formed in various shapes such as a circular shape or a triangular shape, and may be formed by one or a plurality of formed numbers. Also good.
  • the heat exchange section 55 further provides fins 65 extending in the third direction D3 from the side ends of the plurality of heat transfer tubes 60 in the third direction D3 intersecting the plane parallel to the second direction D2 and the first direction D1. You may have.
  • the respective side end portions are a first side end portion 60a and a second side end portion 60b.
  • the fins 65 project from the major axis directions of the plurality of heat transfer tubes 60. The fin 65 assists heat exchange between the first heat exchange fluid and the second heat exchange fluid by utilizing heat conduction.
  • the fin 65 is a plate provided so as to project from one or both of the first side end portion 60a and the second side end portion 60b of the heat transfer tube 60 and extend in the major axis direction of each of the plurality of heat transfer tubes 60. It is a part of the shape.
  • the fin 65 extends in the long axis direction of the heat transfer tube 60, but is not limited to this form.
  • the fins 65 may be formed in a state of being tilted at a predetermined angle in the arrangement direction of the plurality of heat transfer tubes 60 with respect to the major axis direction.
  • the heat transfer tubes 60 are not connected to each other by the heat transfer promoting member. Therefore, each of the plurality of heat transfer tubes 60 is not connected to the heat transfer tubes 60 arranged adjacent to each other via the fins 65.
  • the header 70 is formed so as to extend along the arrangement direction of the plurality of heat transfer tubes 60 in the second direction D2.
  • the header 70 functions as a fluid distribution mechanism in the outdoor heat exchanger 105 that distributes the refrigerant flowing into the outdoor heat exchanger 105 to the plurality of heat transfer tubes 60.
  • the header 70 also functions as a fluid merging mechanism in the outdoor heat exchanger 105, in which the refrigerant flowing out of the outdoor heat exchanger 105 flows out from the plurality of heat transfer tubes 60 and merges.
  • the header 70 has a first header 71 and a second header 72.
  • One of the first header 71 and the second header 72 functions as a fluid distribution mechanism, and the other functions as a fluid merging mechanism.
  • the first header 71 is connected to one end of each of the plurality of heat transfer tubes 60 in each extension direction
  • the second header 72 is connected to the other end of each of the plurality of heat transfer tubes 60 in each extension direction. Has been done. That is, the first header 71 and the second header 72 are attached to both ends of the plurality of heat transfer tubes 60 in the extending direction.
  • the first header 71 includes a cylindrical first tubular portion 73a extending in the arrangement direction of the plurality of heat transfer tubes 60, a first base end portion 73b that closes one end of the first tubular portion 73a, and a first cylinder. It has a first tip portion 73c that closes the other end of the shape portion 73a.
  • the first tubular portion 73a, the first base end portion 73b, and the first tip portion 73c form an outer shell of the first header 71.
  • the second header 72 includes a cylindrical second tubular portion 74a extending in the arrangement direction of the plurality of heat transfer tubes 60, a second base end portion 74b that closes one end of the second tubular portion 74a, and the like. It has a second tip portion 74c that closes the other end of the second tubular portion 74a.
  • the second tubular portion 74a, the second base end portion 74b, and the second tip portion 74c form the outer shell of the second header 72.
  • the first tubular portion 73a of the first header 71 and the second tubular portion 74a of the second header 72 show an embodiment configured in a cylindrical shape, but are limited to a cylindrical shape.
  • it may be a cylinder having a polygonal cross-sectional shape.
  • the first tubular portion 73a of the first header 71 and the second tubular portion 74a of the second header 72 extend parallel to each other in the arrangement direction of the plurality of heat transfer tubes 60.
  • the first tubular portion 73a of the first header 71 and the second tubular portion 74a of the second header 72 are connected to the heat transfer tube 60 so that the inside of the cylinder and the refrigerant passage 62 of the heat transfer tube 60 communicate with each other. ing.
  • the first heat exchange fluid flows into the first header 71 or the second header 72, is distributed to each heat transfer tube 60, passes through the other header 70, and returns to the refrigerant circuit 110.
  • the first header 71 has a first refrigerant connection pipe 41 that communicates with the inside of the first header 71.
  • a first refrigerant connecting pipe 41 that projects outward in the axial direction of the first header 71 and communicates with the inside of the first tubular portion 73a is connected to the first base end portion 73b.
  • the first refrigerant connecting pipe 41 is a tubular member through which the refrigerant flows.
  • the first refrigerant connecting pipe 41 is formed in a cylindrical shape, for example.
  • the first refrigerant connection pipe 41 communicates with the inside of the first header 71 to form an inflow port for the refrigerant flowing into the first header 71, or an outflow port for the refrigerant flowing out from the first header 71.
  • the second header 72 has a second refrigerant connection pipe 42 that communicates with the inside of the second header 72.
  • a second refrigerant connecting pipe 42 that projects outward in the axial direction of the second header 72 and communicates with the inside of the second tubular portion 74a is connected to the second base end portion 74b.
  • the second refrigerant connecting pipe 42 is a tubular member through which the refrigerant flows.
  • the second refrigerant connecting pipe 42 is formed in a cylindrical shape, for example.
  • the second refrigerant connection pipe 42 communicates with the inside of the second header 72 to form an inflow port for the refrigerant flowing into the second header 72, or an outflow port for the refrigerant flowing out from the second header 72.
  • FIG. 5 is a top view of the outdoor heat exchanger 105 according to the first embodiment as viewed from the first direction D1.
  • the removing device 10 moves between the adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60 along the first direction D1 which is the flow direction of the first heat exchange fluid.
  • the heat exchange unit 55 has a region in which adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60 are not connected to each other by a heat transfer promoting member, and the removing device 10 has adjacent heat transfer tubes in the region. Move between 60.
  • the removing device 10 is arranged between adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60, and adheres to the heat exchange unit 55 by moving along the first direction D1 which is the flow direction of the first heat exchange fluid. It removes deposits such as frost.
  • the deposits are, for example, frost, dust, and the like. That is, the removing device 10 can be applied not only to frost but also to removing dust adhering to the surface of the heat transfer tube 60. In the following description, the removal device 10 mainly removes frost.
  • the removing device 10 has a support portion 12 and a removing portion 14.
  • the removing device 10 has a support portion 12 and a removing portion 14, which are integrated and mechanically move in the first direction D1.
  • the heat exchange unit 55 has fins 65
  • the removing device 10 is arranged between the adjacent heat transfer tubes 60 and between the adjacent fins 65.
  • the support portion 12 is formed so as to extend along the second direction D2, which is the arrangement direction of the plurality of heat transfer tubes 60 and the extension direction of the header 70.
  • the support portion 12 is formed in a long shape in the second direction D2.
  • the support portion 12 is formed in a long square columnar shape in the second direction D2, but it may be formed along the second direction D2, and the shape of the support portion 12 is a square columnar shape. It is not limited.
  • the support portion 12 may be formed in a polygonal columnar shape other than a quadrangular prism, or may be formed in a columnar shape.
  • the support portion 12 is movably arranged in the first direction D1, which is the extending direction of the plurality of heat transfer tubes 60.
  • the support portion 12 has a first header 71 and a second header along the first direction D1 by a well-known drive device 90 or the like that converts electrical energy of a motor or the like into mechanical energy, as shown in FIGS. 1 and 3, for example. It moves to and from 72.
  • a plurality of removing portions 14 are fixed to the support portion 12.
  • the plurality of removing portions 14 are arranged between adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60.
  • the removing portion 14 is arranged between the adjacent heat transfer tubes 60, and as the support portion 12 moves, the frost and other deposits adhering to the surface of the heat transfer tube 60 are removed.
  • the heat exchange unit 55 has fins 65
  • the removing unit 14 removes frost and other deposits adhering to the surfaces of the heat transfer tube 60 and the fins 65 as the support unit 12 moves.
  • the removing portion 14 is arranged along the longitudinal direction of the supporting portion 12. That is, the removing portions 14 are arranged in parallel along the second direction D2.
  • the plurality of removing portions 14 are formed in the tooth shape of a comb in the removing device 10.
  • One removing portion 14 is provided in the first direction D1 in which the heat transfer tube 60 extends, and the removing portions 14 are arranged in a row along the longitudinal direction of the support portion 12.
  • the removal portion 14 is not limited to the configuration in which one is provided in the first direction D1 and is arranged in a row along the longitudinal direction of the support portion 12.
  • a plurality of removing portions 14 may be provided in the first direction D1 in which the heat transfer tube 60 extends, and a plurality of rows of removing portions 14 arranged along the longitudinal direction of the support portion 12 are provided in the first direction D1. May be good.
  • the removing portion 14 is provided so as to protrude from the supporting portion 12, and is formed so as to extend in the third direction D3.
  • the removing unit 14 is arranged between adjacent heat transfer tubes 60.
  • the heat transfer tube 60 is arranged between the adjacent removal portions 14 of the plurality of removal portions 14 formed in the shape of teeth of a comb.
  • the heat transfer tube 60 and the fins 65 are arranged between the adjacent removal portions 14 of the plurality of removal portions 14 formed in the shape of teeth of a comb.
  • the removing portion 14 is provided along the long axis direction of the heat transfer tube 60.
  • the removing unit 14 faces the heat transfer tube 60 in the second direction D2.
  • the heat exchange section 55 has fins 65
  • the removing section 14 is formed so as to face the heat transfer tube 60 and the fins 65.
  • the removing portion 14 is formed longer than the length of the heat exchange portion 55 in the third direction D3. Specifically, it is desirable that the length of the removing portion 14 in the third direction D3 is formed longer than the lengths of both ends of the heat transfer tube 60 in the third direction D3. Further, it is desirable that the length of the removing portion 14 in the third direction D3 is formed longer than the length of the ends of the fins 65 which are both ends of the heat exchange portion 55 in the third direction D3. That is, it is desirable that the removing portion 14 faces all the portions of the heat transfer tube 60 in the second direction D2. Further, it is desirable that the removing portion 14 faces all the portions of the heat transfer tube 60 and the fin 65 in the second direction D2.
  • the length of the removal portion 14 in the third direction D3 is as shown in FIG.
  • the length is larger than the length of the heat exchange portion 55.
  • the windward side of the heat transfer tube 60 in which the second heat exchange fluid flows into the heat transfer tube 60 is a portion where the heat transfer tube 60 is in contact with moist air, so that dew condensation is likely to occur and frost is likely to form.
  • the removing unit 14 needs to remove frost mainly on the windward side of the heat transfer tube 60.
  • the length of the removal portion 14 is formed to be larger than the length of the heat exchange portion 55, so that the length of the heat transfer tube 60 is on the windward side. It is possible to remove deposits such as frost adhering to the surface.
  • FIG. 6 is a first modification of the removing portion 14 shown in FIG.
  • the removal portion 14 is arranged in the third direction D3 as shown in FIG. May be formed so that the length of the heat exchange portion 55 is smaller than the length of the heat exchange portion 55. Even in this case, it is desirable that the removing portion 14 extends in the third direction D3 so as to face more than half of the heat transfer tube 60 in the major axis direction of the heat transfer tube 60 in the second direction D2.
  • the removal portion 14 is arranged in the third direction D3 as shown in FIG. May be formed to be longer than the length of the heat exchange portion 55.
  • the support portion 12 is connected to the heat transfer tube 60 in the direction in which the second heat exchange fluid flows. It may be installed on the leeward side of the building or on the leeward side of the.
  • Each of the plurality of removing portions 14 has a base portion 14b fixed to the support portion 12 and extending from the support portion 12, and a contact portion 14a protruding from the base portion 14b and in contact with the heat exchange portion 55.
  • the base portion 14b is provided so as to protrude from the support portion 12, and is formed in a columnar shape so as to extend in the third direction D3.
  • the base portion 14b is provided along the major axis direction of the heat transfer tube 60.
  • the base 14b faces the heat transfer tube 60 in the second direction D2.
  • the base portion 14b is formed so as to face the heat transfer tube 60 and the fins 65.
  • the base portion 14b supports a contact portion 14a formed so as to project from the base portion 14b.
  • the contact portion 14a protrudes from the base portion 14b.
  • the contact portion 14a is formed so as to project in the radial direction from the outer peripheral surface of the base portion 14b formed in a columnar shape.
  • the contact portion 14a projects from all outer peripheral surfaces in the circumferential direction of the base portion 14b.
  • the contact portion 14a is not limited to a configuration that protrudes from all the outer peripheral surfaces in the circumferential direction of the base portion 14b, and the heat exchange portion 55 exists in the direction in which the contact portion 14a extends in the circumferential direction of the base portion 14b. It suffices if it is formed at the position where it is.
  • At least a part of the contact portion 14a has the tip of the contact portion 14a protruding from the base portion 14b in contact with the heat transfer tube 60 constituting the heat exchange portion 55.
  • at least a part of the contact portion 14a has the tip of the contact portion 14a protruding from the base portion 14b in contact with the heat transfer tube 60 and the fin 65 constituting the heat exchange portion 55.
  • the contact portion 14a is formed in a brush shape by gathering a large number of fibrous members.
  • the contact portion 14a is formed of, for example, a resin member or the like, and is preferably elastic.
  • the contact portion 14a is not limited to the resin member, and may be, for example, a metal member. If the contact portion 14a has elasticity, the contact portion 14a can come into contact with the heat transfer tube 60 and the fin 65 along the shapes of the heat transfer tube 60 and the fin 65, and adhere to the heat transfer tube 60 and the fin 65. It is easy to remove the deposits such as frost. Further, if the contact portion 14a has elasticity, the heat transfer tube 60 and the fin 65 that come into contact with the contact portion 14a are less likely to be damaged.
  • the brush-shaped contact portion 14a is in contact with the heat transfer tube 60, and the support portion 12 moves, so that frost and other deposits adhering to the heat transfer tube 60 are removed by the contact portion 14a. ..
  • the support portion 12 moves while the brush-shaped contact portion 14a is in contact with the heat transfer tube 60 and the fin 65, so that deposits such as frost adhering to the heat transfer tube 60 and the fin 65 are removed. It is wiped off by the contact portion 14a.
  • FIG. 7 is a second modification of the removing portion 14 shown in FIG.
  • the removing portion 14 of the second modification has a contact portion 14e and a base portion 14f that supports the contact portion 14e.
  • the contact portion 14a is shown in the shape of a brush as an example in FIGS. 5 and 6, but the contact portion 14a is not limited to the structure formed in the shape of a brush.
  • the contact portion 14a may be, for example, a contact portion 14e formed in a spatula shape having a constant width in the third direction D3. Even in this case, it is desirable that the contact portion 14e formed in the shape of a spatula is formed so as to have elasticity.
  • the contact portion 14e is formed in a thin plate shape and comes into contact with the side surface of the heat transfer tube 60.
  • the contact portion 14e is formed in a thin plate shape and comes into contact with the side surfaces of the heat transfer tube 60 and the fin 65.
  • the base portion 14f is provided so as to protrude from the support portion 12, and is formed so as to extend in the third direction D3.
  • the base portion 14f may be columnar or plate-shaped, for example.
  • the base portion 14f is provided along the major axis direction of the heat transfer tube 60.
  • the base portion 14f faces the heat transfer tube 60 in the second direction D2.
  • the heat exchange portion 55 has fins 65
  • the base portion 14f is formed so as to face the heat transfer tube 60 and the fins 65.
  • the contact portion 14e and the base portion 14f are described as separate bodies, but in the removing portion 14, the contact portion 14e and the base portion 14f may be integrally formed.
  • the support portion 12 moves while the contact portion 14e formed in the shape of a spatula is in contact with the heat transfer tube 60, so that the frost adhering to the heat transfer tube 60 is removed by the contact portion 14e.
  • the support portion 12 moves while the contact portion 14e formed in the shape of a spatula is in contact with the heat transfer tube 60 and the fin 65, so that the frost adhering to the heat transfer tube 60 and the fin 65 is removed by the contact portion 14e. Will be paid off.
  • FIG. 8 is a third modification of the removing portion 14 shown in FIG.
  • the arrow RN shown in FIG. 8 indicates rotation.
  • the contact portion 14a may rotate about the axis of the base portion 14b.
  • the rotation direction of the contact portion 14a is not limited.
  • the rotation of the contact portion 14a makes it easier for the contact portion 14a to further remove frost and other deposits adhering to the heat transfer tube 60 and the fins 65.
  • the contact portion 14a rotates together with the base portion 14b, for example, by rotating the base portion 14b.
  • the contact portion 14a may vibrate via the base portion 14b. The vibration of the contact portion 14a makes it easier for the contact portion 14a to further remove frost and other deposits adhering to the heat transfer tube 60 and the fins 65.
  • FIG. 9 is a fourth modification of the removal unit 14 shown in FIG.
  • Each of the plurality of removing portions 14 may have a main body portion 14c formed at a position where at least one or more ejection holes 14d for ejecting air face the heat exchange portion 55.
  • the main body portion 14c is provided so as to protrude from the support portion 12, and is formed in a tubular shape so as to extend in the third direction D3.
  • the main body portion 14c is provided along the long axis direction of the heat transfer tube 60.
  • the main body 14c faces the heat transfer tube 60 in the second direction D2.
  • the heat exchange portion 55 has fins 65
  • the main body portion 14c is formed so as to face the heat transfer tube 60 and the fins 65.
  • At least one or more ejection holes 14d are formed on the peripheral wall of the main body 14c facing the heat transfer tube 60 and the fin 65.
  • the ejection hole 14d is a hole through which air is blown out from the inside of the main body portion 14c.
  • the ejection hole 14d is formed in the peripheral wall of the main body portion 14c at a position facing the heat transfer tube 60 which is the heat exchange portion 55 or at a position facing the heat transfer tube 60 and the fin 65 which are the heat exchange portions 55.
  • the ejection hole 14d may be formed in the entire circumferential direction of the main body portion 14c, or may be formed in a part of the circumferential direction.
  • the air blown out from the ejection hole 14d has a pressure sufficient to blow out deposits such as frost adhering to the heat transfer tube 60 and the fin 65.
  • outdoor heat exchanger 105 The operation of the outdoor heat exchanger 105 according to the first embodiment will be described by exemplifying the operation when the outdoor heat exchanger 105 functions as an evaporator of the refrigeration cycle device 100.
  • the gas-liquid two-phase refrigerant decompressed by the decompression device 104 flows into the outdoor heat exchanger 105 that functions as an evaporator.
  • the refrigerant flows in from the first header 71 of the outdoor heat exchanger 105 via the first refrigerant connecting pipe 41, and is separated into the same path as the number of the plurality of heat transfer pipes 60.
  • the refrigerant flows through the refrigerant passages 62 of the plurality of heat transfer tubes 60, absorbs heat and evaporates, flows out from the second refrigerant connecting pipe 42 through the second header 72, and circulates in the refrigerant circuit 110.
  • frost may adhere to the heat exchange section 55 of the outdoor heat exchanger 105 depending on the conditions such as the outside air temperature. Even if deposits such as frost adhere to the heat exchange portion 55 of the outdoor heat exchanger 105, the removing device 10 arranged between the plurality of heat transfer tubes 60 is the first direction in which the plurality of heat transfer tubes 60 extend. By moving along the direction D1, deposits such as frost adhering to the heat exchange portion 55 of the outdoor heat exchanger 105 are removed.
  • the outdoor heat exchanger 105 includes a removing device that moves between adjacent heat transfer tubes 60 of a plurality of heat transfer tubes 60 along the first direction D1 which is the flow direction of the first heat exchange fluid.
  • the removing device 10 is arranged between the heat transfer tubes 60 inside the outdoor heat exchanger 105, and the removing device 10 arranged between the heat transfer tubes 60 moves along the heat transfer tube 60 to form a heat exchange unit. Debris such as frost adhering to 55 is removed. Therefore, the outdoor heat exchanger 105 can remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • the outdoor heat exchanger 105 does not need to perform the defrosting operation of defrosting using the latent heat of condensation of the refrigerant, and can continuously perform the heating operation. Therefore, the outdoor heat exchanger 105 does not cause discomfort to the user due to the discontinuous heating operation. Further, the outdoor unit 106 can remove deposits such as frost generated around the heat transfer pipe 60 during the heating operation, and can delay the time until the space between the adjacent heat transfer pipes 60 is closed. As a result, the outdoor heat exchanger 105 can extend the heating operation time. Further, since the outdoor heat exchanger 105 can remove deposits such as frost from the outdoor heat exchanger 105 by the removing device 10, it is possible to suppress deterioration of the heat exchange performance of the outdoor heat exchanger 105 due to the deposits. Can be done.
  • the heat exchange unit 55 has a region in which adjacent heat transfer tubes 60 of the plurality of heat transfer tubes 60 are not connected to each other by a heat transfer promoting member, and the removing device 10 is between the adjacent heat transfer tubes 60 in the region.
  • the removing device 10 can be used in an outdoor heat exchanger 105 having a so-called finless region.
  • the removing device 10 is arranged between the heat transfer tubes 60 inside the outdoor heat exchanger 105 having the configuration, and the removing device 10 arranged between the heat transfer tubes 60 moves along the heat transfer tube 60. Debris such as frost adhering to the heat exchange unit 55 is removed. Therefore, the outdoor heat exchanger 105 can remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • the removing device 10 is arranged between the heat transfer tubes 60 of the adjacent heat transfer tubes 60 and between the adjacent fins 65. Therefore, the removing device 10 can remove frost and other deposits adhering to the heat transfer tube 60 and the fins 65 by moving the removing device 10 along the heat transfer tube 60.
  • each heat transfer tube 60 constituting the plurality of heat transfer tubes 60 may be a flat tube in which a plurality of refrigerant passages 62 through which the refrigerant flows are formed.
  • flat tubes have been introduced in place of conventional circular tubes as heat transfer tubes used in heat exchangers of refrigerating and air-conditioning equipment for the purpose of improving the performance and weight of refrigerating cycle devices. Since the outdoor heat exchanger 105 can use a flat tube as the heat transfer tube 60, it is possible to improve the performance and reduce the weight of the refrigeration cycle device 100. Even in such a refrigeration cycle device 100, the outdoor heat exchanger 105 can remove deposits such as frost adhering to the inside of the heat exchange unit 55 by the removing device 10.
  • a plurality of removing portions 14 arranged between adjacent heat transfer tubes 60 to remove frost and a plurality of removing portions 14 are fixed and movable along the first direction D1. 12 and.
  • the removing portion 14 is arranged between the heat transfer tubes 60 inside the outdoor heat exchanger 105, and the support portion 12 supporting the removing portion 14 arranged between the heat transfer tubes 60 moves along the heat transfer tube 60. Then, the deposits such as frost adhering to the heat exchange portion 55 are wiped off and removed. Therefore, the outdoor heat exchanger 105 can remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • the outdoor heat exchanger 105 does not need to perform the defrosting operation of defrosting using the latent heat of condensation of the refrigerant, and can continuously perform the heating operation.
  • the heat transfer tubes 60 extend in the vertical direction, and there are no obstacles of heat transfer promoting members such as plate fins between the adjacent heat transfer tubes 60. Therefore, the removing device 10 can smoothly move along the heat transfer tube 60 even if the removing portion 14 is made of a hard material. Then, the deposits such as frost removed from between the heat transfer tubes 60 are removed without being caught by other members of the outdoor heat exchanger 105.
  • each of the plurality of removing portions 14 has a base portion 14b fixed to the support portion 12 and extending from the support portion 12, and a contact portion 14a protruding from the base portion 14b and in contact with the heat exchange portion 55.
  • the contact portion 14a moves while being in contact with the heat transfer tube 60 and the fins 65. Therefore, as the support portion 12 moves along the heat transfer tube 60, deposits such as frost adhering to the heat transfer tube 60 and the fins 65 are wiped off and removed by the contact portion 14a. Therefore, the outdoor heat exchanger 105 can remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • the contact portion 14a may rotate. Frost and other deposits adhering to the heat transfer tube 60 and the fins 65 are more easily removed because the number of times they come into contact with the contact portion 14a increases due to the rotation of the contact portion 14a and the pressure applied by the contact portion 14a increases. .. Therefore, the outdoor heat exchanger 105 can further remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • the contact portion 14a may vibrate. The vibration of the contact portion 14a makes it easier to remove frost and other deposits adhering to the heat transfer tube 60 and the fins 65. Therefore, the outdoor heat exchanger 105 can further remove deposits such as frost that have entered the inside of the outdoor heat exchanger 105 by the removing device 10.
  • each of the plurality of removing portions 14 has a main body portion 14c formed in a tubular shape, and at least one or more ejection holes 14d for ejecting air are formed at positions facing the heat exchange portion 55.
  • the removing unit 14 can blow off and remove frost and other deposits adhering to the heat transfer tube 60 and the fins 65 by the air.
  • the removing portion 14 removes deposits such as frost adhering to the heat transfer tube 60 and the fins 65 at the positions where the moving support portions 12 face each other. Can be removed.
  • the removing device 10 does not come into contact with the heat exchange unit 55, the removing device 10 does not easily damage the heat exchange unit 55.
  • FIG. 10 is a conceptual diagram showing the configuration of the outdoor unit 106 according to the second embodiment.
  • the components having the same functions and functions as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • the outdoor unit 106 according to the second embodiment specifies the arrangement of the support portion 12 of the removal device 10.
  • the outdoor unit 106 includes an outdoor heat exchanger 105, an outdoor blower 108 that forms a flow of a second heat exchange fluid that circulates between the heat transfer tubes 60 of a plurality of heat transfer tubes 60, and an outdoor heat exchanger 105 and an outdoor unit. It has a housing 52 that houses the blower 108.
  • the housing 52 constitutes the outer shell of the outdoor unit 106.
  • the housing 52 is formed of, for example, sheet metal or the like.
  • the outdoor blower 108 forms a flow of the second heat exchange fluid, causes the second heat exchange fluid to flow into the housing 52, and heats with the first heat exchange fluid flowing in the outdoor heat exchanger 105.
  • the exchanged second heat exchange fluid is discharged from the housing 52.
  • the support portion 12 of the removing device 10 is arranged between the position where the heat exchange portion 55 is arranged and the position where the outdoor blower 108 is arranged in the direction in which the second heat exchange fluid flows. Has been done.
  • the support portion 12 of the removing device 10 is arranged between the position where the heat exchange portion 55 is arranged and the position where the outdoor blower 108 is arranged in the direction in which the second heat exchange fluid flows. Therefore, the support portion 12 is arranged in the housing 52.
  • the outdoor unit 106 has a structure in which the support portion 12 does not protrude from the housing 52. Therefore, the outdoor unit 106 is less likely to be damaged because the support portion 12 of the removal device 10 is not directly exposed to wind and rain and contact with other objects can be avoided. Further, by having the outdoor unit 106, it is possible to avoid contact between the user and the driving support portion 12, and it is possible to protect the user.
  • FIG. 11 is a conceptual diagram showing the configuration of the outdoor heat exchanger 105 according to the third embodiment.
  • the components having the same functions and functions as those of the first and second embodiments are designated by the same reference numerals and the description thereof will be omitted.
  • the outdoor heat exchanger 105 according to the third embodiment specifies the arrangement of the support portion 12 of the removal device 10.
  • the support portion 12 of the outdoor heat exchanger 105 has a first support portion 12a and a second support portion 12b.
  • the first support portion 12a is arranged on one side of the plurality of heat transfer tubes 60
  • the second support portion 12a is arranged on one side.
  • 12b is arranged on the other side of the plurality of heat transfer tubes 60.
  • the support portion 12 is arranged so as to sandwich the heat transfer tube 60.
  • the first support portion 12a is arranged on the windward side of the plurality of heat transfer tubes 60 in the direction in which the second heat exchange fluid flows, and the second support portion 12a is arranged on the leeward side of the plurality of heat transfer tubes 60.
  • the support portion 12b is arranged.
  • the first support portion 12a is arranged on one side of the heat transfer tube 60 and the second support portion 12b is arranged on the other side in the direction in which the second heat exchange fluid flows. Just do it.
  • the first support portion 12a is arranged on one side of the plurality of heat transfer tubes 60, and the second support portion 12b is arranged on the other side of the plurality of heat transfer tubes 60.
  • the support portion 12 sandwiches the removal portion 14 from the front and back in the direction in which the second heat exchange fluid flows. Since it can be supported on the surface, the removal portion 14 is less likely to be damaged.
  • FIG. 12 is a block diagram showing a configuration example relating to the control of the outdoor heat exchanger 105 according to the fourth embodiment.
  • the components having the same functions and functions as those of the first to third embodiments are designated by the same reference numerals and the description thereof will be omitted.
  • the outdoor heat exchanger 105 according to the fourth embodiment specifies the operation of the removing device 10.
  • the outdoor heat exchanger 105 of the outdoor unit 106 has a control device 80.
  • the control device 80 controls the removal device 10 based on the detection temperature measured by the measuring device 30.
  • the control device 80 includes a memory 84 for storing a program, a CPU 82 (Central Processing Unit) that executes processing according to the program, and a timekeeping device 86.
  • the control device 80 is, for example, a microcomputer.
  • the control device 80 is connected to the measuring device 30 and the driving device 90 by wire or wirelessly.
  • the control device 80 receives the temperature of the refrigerant detected by the measuring device 30.
  • the measuring device 30 measures the refrigerant temperature or the outside air temperature. As shown in FIG. 1, the measuring device 30 has one or both of the first temperature detecting device 31 and the second temperature detecting device 32.
  • the first temperature detection device 31 is a device for measuring the temperature of the first heat exchange fluid, for example, a device for measuring the temperature of the refrigerant discharged from the outdoor heat exchanger 105.
  • the second temperature detection device 32 is a device for measuring the temperature of the second heat exchange fluid, for example, a device for measuring the outdoor air temperature at the place where the outdoor heat exchanger 105 is arranged.
  • the control device 80 controls the drive device 90 based on the detected temperature of the measuring device 30 or the elapsed time due to the time of the time measuring device 86 to move the removing device 10 and stop the removing device 10.
  • the memory 84 stores data used when the control device 80 performs various processes.
  • the memory 84 is a volatile storage device (not shown) such as a random access memory (RAM) capable of temporarily storing data, or a non-volatile auxiliary storage device such as a hard disk or a flash memory capable of storing data for a long period of time. (Not shown).
  • a set value Ta which is an arbitrary set temperature with respect to the detection temperature of the first temperature detection device 31, is stored in advance.
  • the memory 84 stores in advance a set value Tb, which is an arbitrary set temperature with respect to the detection temperature of the second temperature detection device 32.
  • the memory 84 stores in advance a set time Tm, which is an arbitrary set time for periodically operating the removal device 10.
  • the timekeeping device 86 has a timer or the like, and performs timekeeping used by the control device 80 for determining the time.
  • the removal device 10 is located downward in the first direction D1 at the time of default stop. Specifically, in the outdoor heat exchanger 105, the first header 71 is arranged below and the second header 72 is installed above in the vertical direction, so that the plurality of heat transfer tubes 60 extend in the vertical direction. It is provided. The removing device 10 is arranged on the first header 71 side with respect to the second header 72 when stopped, and is arranged at the lower end portion 61a in the extending direction of the plurality of heat transfer tubes 60.
  • the removal device 10 is not limited to the configuration in which the removal device 10 is arranged downward in the first direction D1 at the time of default stop.
  • the removing device 10 may be arranged at a position that does not obstruct the flow of wind to the heat exchange unit 55 when stopped.
  • the control device 80 drives the drive device 90 and moves the removal device 10.
  • the control device 80 may periodically drive the drive device 90 to start the movement of the removal device 10.
  • the control device 80 drives the drive device 90 every set time Tm, which is a fixed interval, and moves the removal device 10.
  • the control device 80 drives the drive device 90 and moves the removal device 10 based on the detection temperature of the measuring device 30.
  • the control device 80 starts the movement of the removing device 10.
  • the control device 80 drives the drive device 90 when the detection temperature of the first temperature detection device 31 falls below the set value Ta.
  • the control device 80 drives the drive device 90 when the detection temperature of the second temperature detection device 32 falls below the set value Tb.
  • the set value Ta and the set value Tb are stored in the memory 84 in advance as temperatures at which frost begins to adhere to the heat exchange unit 55.
  • the control device 80 may drive the drive device 90 and move the removal device 10 based on the instruction of the user who starts the removal device 10.
  • the removal device 10 moves from the lower side to the upper side and returns to the lower side. That is, the removing device 10 moves from the lower end 61a of the heat transfer tube 60 toward the upper end 61b in the extending direction of the plurality of heat transfer tubes 60, and moves from the upper end 61b side to the lower end 61a side of the heat transfer tube 60. Move down.
  • the movement of the removing device 10 accompanying the work of removing the deposits at one time may be one reciprocating motion from the bottom to the top and back to the bottom, or may be a plurality of reciprocating movements from the bottom to the top and back to the bottom. .. Further, the operation of the removing device 10 is not limited to the reciprocating movement from the lower side to the upper side and the upper side to the lower side, and may only move from the lower side to the upper side during the removal work of the deposit.
  • the removing device 10 moves upward from the lower end portion 61a side and moves downward from the upper end portion 61b side of the plurality of heat transfer tubes 60 during the work of removing the deposits. Therefore, the outdoor heat exchanger 105 suppresses the accumulation of deposits such as frost that have been blown off from the heat exchange unit 55 by the removing device 10 on the first header 71 located below the heat transfer tube 60.
  • the removing device 10 when the removing device 10 is arranged at the upper end portions 61b of the plurality of heat transfer tubes 60 when stopped, and moves downward from the upper end portion 61b during the removal work of the deposits, the lower surface side of the removing device 10 heats the removal device 10.
  • deposits such as frost that have been wiped off from the exchange portion 55 will accumulate on the first header 71.
  • frost that has been washed off accumulates on the first header 71, a lump of ice will be formed on the first header 71 and the heat exchange capacity will be impaired. Work is required.
  • the outdoor heat exchanger 105 cannot perform the heating operation during the defrosting operation, which may cause discomfort to the user regarding the sensible temperature and the like.
  • the removing device 10 is arranged at the lower end portions 61a of the plurality of heat transfer tubes 60 when stopped, and moves upward from the lower end portions 61a during the removal work of the deposits, and the upper ends of the plurality of heat transfer tubes 60. It moves downward from the portion 61b.
  • the removal device 10 moves, the deposits such as frost that are removed from the heat exchange unit 55 are removed on the upper surface side of the removal device 10, so that the first header 71 located below the removal device 10 is located. Do not fall directly on top. Therefore, the outdoor heat exchanger 105 suppresses the accumulation of deposits such as frost that have been blown off from the heat exchange unit 55 by the removing device 10 on the first header 71 located below the heat transfer tube 60.
  • control device 80 periodically starts the movement of the removal device 10. For example, in an environmental condition where deposits such as frost are likely to adhere to the heat exchange unit 55, the control device 80 periodically starts the movement of the removal device 10, so that the user starts the movement of the removal device 10. It is not necessary to give the instruction of every time the deposit removal work is performed.
  • control device 80 starts the movement of the removal device 10 based on the measured value of the measuring device 30. Since the control device 80 automatically starts the defrosting work of the heat exchange unit 55 under the condition that frost is likely to occur, it is necessary for the user to give an instruction for starting the movement of the removing device 10 for each defrosting work. Absent.
  • FIG. 13 is a conceptual diagram showing the configuration of the outdoor heat exchanger 105 according to the fifth embodiment.
  • FIG. 14 is a conceptual diagram showing a configuration of a first modification of the outdoor heat exchanger 105 according to the fifth embodiment.
  • FIG. 15 is a conceptual diagram showing a configuration of a second modification of the outdoor heat exchanger 105 according to the fifth embodiment.
  • the arrow MD1 shown in FIGS. 13 to 15 indicates the direction of movement of the removal device 10, and indicates that the removal device 10 moves upward from the stop position.
  • the components having the same functions and functions as those of the first to fourth embodiments are designated by the same reference numerals and the description thereof will be omitted.
  • the outdoor heat exchanger 105 according to the fifth embodiment further specifies the shape of the removing portion 14 of the removing device 10.
  • the outdoor heat exchanger 105 has a first header 71 and a second header 72 that form a header 70 connected to both ends of a plurality of heat transfer tubes 60 in the extending direction.
  • the plurality of removing portions 14 are larger than the width WH of the first header 71 arranged below the removing device 10 in the header 70. It is formed long. That is, the length of the removing portion 14 in the protruding direction from the supporting portion 12 is formed to be larger than the width WH which is the outer diameter of the first header 71.
  • the width WH of the first header 71 is the outer diameter of the first tubular portion 73a shown in FIGS. 2 and 3.
  • At least one end in the longitudinal direction of the plurality of removing portions 14 is larger than the first tubular portion 73a constituting the outer shell of the first header 71. It is located on the outside.
  • the longitudinal end of the removal portion 14 is a connection that constitutes a tip portion 15a that constitutes an end portion on the distal end side in a direction protruding from the support portion 12 and an end portion on the root side that is a portion that connects to the support portion 12. It has an end portion 15b and.
  • both the tip portion 15a and the connection end portion 15b of the removing portion 14 are located outside the first tubular portion 73a constituting the outer shell of the first header 71.
  • the tip portion 15a of the removing portion 14 is located outside the first tubular portion 73a constituting the outer shell of the first header 71.
  • the connecting end portion 15b of the removing portion 14 is located outside the first tubular portion 73a constituting the outer shell of the first header 71.
  • the plurality of removing portions 14 are curved so that at least one end of the tip side and the root side faces downward in the longitudinal direction extending from the support portion 12.
  • the plurality of removing portions 14 are formed in an upwardly convex arc shape in a side view viewed in parallel with the second direction D2. It is desirable that the removing portion 14 has a structure in which deposits such as frost removed along the curved shape slide down.
  • both the tip portion 15a and the connection end portion 15b of the removing portion 14 are curved so as to face downward.
  • the tip portion 15a of the removing portion 14 is curved so as to face downward.
  • the connecting end portion 15b of the removing portion 14 is curved so as to face downward.
  • the plurality of removing portions 14 are formed longer than the width WH of the first header 71 arranged below the removing device 10 in the header 70. At least one end of the plurality of removing portions 14 in the longitudinal direction is located outside the first tubular portion 73a constituting the outer shell of the first header 71. Since the removing unit 14 has this configuration, the outdoor heat exchanger 105 has frost and other deposits that are removed from the heat exchange unit 55 as the removing device 10 moves, and the deposits such as frost ride on the upper surface side of the removing device 10. It does not fall directly onto the first header 71 located below the removal device 10.
  • the outdoor heat exchanger 105 suppresses the accumulation of deposits such as frost that have been wiped off from the heat exchange unit 55 by the removing device 10 on the first header 71 located below the heat transfer tube 60. Can be done. Then, it is possible to prevent the gap at the lower part of the heat transfer tube 60 from being blocked by deposits such as accumulated frost.
  • the plurality of removing portions 14 are curved so that at least one end of the tip side and the root side faces downward in the longitudinal direction extending from the support portion 12.
  • the outdoor heat exchanger 105 is likely to have frost and other deposits removed along the downward inclination. Since the removing unit 14 has this configuration, the outdoor heat exchanger 105 has frost and other deposits that are removed from the heat exchange unit 55 as the removing device 10 moves, and the deposits such as frost ride on the upper surface side of the removing device 10. It does not fall directly onto the first header 71 located below the removal device 10.
  • the outdoor heat exchanger 105 suppresses the accumulation of deposits such as frost that have been wiped off from the heat exchange unit 55 by the removing device 10 on the first header 71 located below the heat transfer tube 60. Can be done. Then, it is possible to prevent the gap at the lower part of the heat transfer tube 60 from being blocked by deposits such as accumulated frost.
  • the plurality of removing portions 14 are formed longer than the width WH of the first header 71 arranged below the removing device 10 in the header 70. Further, the plurality of removing portions 14 are curved so that at least one end of the tip side and the root side faces downward in the longitudinal direction extending from the support portion 12.
  • the removing unit 14 has the above-mentioned configuration, is arranged at the lower end portions 61a of the plurality of heat transfer tubes 60 when stopped, and moves upward from the lower end portion 61a during the removal work of the deposits. The heat transfer tube 60 moves downward from the upper end portion 61b of the above.
  • the removing unit 14 has the configuration, and the removing device 10 can further prevent the removal device 10 from accumulating on the first header 71 by performing the movement, and the lower part of the heat transfer tube 60 can be prevented from being further deposited. It is possible to prevent the gaps from being blocked by deposits such as accumulated frost.
  • FIG. 16 is a conceptual diagram showing the configuration of the outdoor heat exchanger 105 according to the sixth embodiment.
  • the components having the same functions and functions as those of the first to fifth embodiments are designated by the same reference numerals and the description thereof will be omitted.
  • the outdoor heat exchanger 105 according to the sixth embodiment further specifies the configuration of the heat transfer tube 60.
  • the outdoor heat exchanger 105 according to the sixth embodiment has a plurality of heat transfer tubes 60 in the third direction D3.
  • the outdoor heat exchanger 105 shown in FIG. 16 shows a configuration in which two heat transfer tubes 60 are arranged in the third direction D3. Therefore, the outdoor heat exchanger 105 shown in FIG. 16 has two rows composed of heat transfer tubes 60 arranged in the second direction D2.
  • the outdoor heat exchanger 105 according to the sixth embodiment is not limited to the configuration in which the two heat transfer tubes 60 are arranged in the third direction D3, and has three or more heat transfer tubes 60. May be good.
  • a plurality of heat transfer tubes 60 are arranged between adjacent removal portions 14 of the plurality of removal portions 14 formed in the shape of teeth of a comb.
  • two heat transfer tubes 60 are arranged between the adjacent removal portions 14 of the plurality of removal portions 14 formed in the shape of teeth of a comb.
  • the outdoor heat exchanger 105 according to the sixth embodiment has a plurality of heat transfer tubes 60 in the third direction D3.
  • a plurality of heat transfer tubes 60 are arranged between the adjacent removal portions 14. Therefore, in the outdoor heat exchanger 105, even if the outdoor heat exchanger 105 according to the sixth embodiment has a plurality of heat transfer tubes 60 in the third direction D3, frost or the like adhering to the heat exchange unit 55 or the like. Adhesion can be removed.
  • FIG. 17 is a perspective view showing a configuration of a main part of the outdoor heat exchanger 105 according to the seventh embodiment.
  • FIG. 18 is a conceptual diagram of the outdoor heat exchanger 105 according to the seventh embodiment as viewed from the side.
  • the components having the same functions and functions as those of the first to sixth embodiments are designated by the same reference numerals and the description thereof will be omitted.
  • the outdoor heat exchanger 105 has a heater which is a heating element.
  • the removal device 10 of the outdoor heat exchanger 105 has a heater.
  • the support portion 12 may include the support portion heater 92 as shown in FIGS. 17 and 18.
  • the support heater 92 is the first heater of the outdoor heat exchanger 105.
  • the removal portion 14 may be configured to generate heat by heat conduction when the support portion heater 92 generates heat.
  • the support heater 92 is formed in a long shape and is arranged along the longitudinal direction of the support 12.
  • the support portion heater 92 is formed in a long shape, and is not limited to the configuration in which the support portion heater 92 is arranged along the longitudinal direction of the support portion 12. Further, in the outdoor heat exchanger 105 shown in FIGS. 17 and 18, the support portion heater 92 is arranged on the upper surface side of the support portion 12, but the support portion heater 92 is arranged on the upper surface side of the support portion 12. It is not limited to the configuration.
  • a plurality of removal units 14 may include a removal unit heater 94.
  • the removal unit heater 94 is the second heater of the outdoor heat exchanger 105.
  • the removal unit heater 94 is formed in a long shape and is arranged along the longitudinal direction of the removal unit 14.
  • the removal unit heater 94 is formed in a long shape, and is not limited to the configuration in which the removal unit heater 94 is arranged along the longitudinal direction of the removal unit 14.
  • the removal unit heater 94 is arranged on the upper surface side of the removal unit 14, but the removal unit heater 94 is arranged on the upper surface side of the removal unit 14. It is not limited to the configuration. Further, the removal unit heater 94 does not necessarily have to be installed in all the removal unit 14. When the removing unit 14 has a heater, at least one removing unit 14 out of the plurality of removing units 14 has a removing unit heater 94.
  • the first header 71 may have a heater.
  • the first header 71 may have, for example, a header heater 96 formed in a long shape and arranged along the longitudinal direction of the first header 71.
  • the first header 71 is arranged between adjacent heat transfer tubes 60, for example, and the inter-tube heater 98 arranged along the lateral direction of the first header 71. May have.
  • the header heater 96 and the inter-pipe heater 98 are the third heaters of the outdoor heat exchanger 105.
  • the outdoor heat exchanger 105 When the outdoor heat exchanger 105 according to the seventh embodiment has a heater that is a heating element, the outdoor heat exchanger 105 is one of a support heater 92, a removal heater 94, a header heater 96, and an inter-pipe heater 98. It suffices to have the above.
  • the outdoor heat exchanger 105 can remove the frost adhering to the heat exchange portion 55 that could not be removed due to the heat generated by the first heater. Further, since the support portion 12 is provided with the first heater that generates heat, the outdoor heat exchanger 105 can remove the frost adhering to the support portion 12 due to the heat generation of the first heater, and the support portion 12 has. It is possible to prevent the attached frost from freezing. Further, since the support portion 12 is provided with the first heater that generates heat, the outdoor heat exchanger 105 can remove the frost on the first header 71 due to the heat generated by the first heater, and the first header 71 can be removed. It is possible to prevent the upper frost from freezing.
  • the outdoor heat exchanger 105 can remove the frost adhering to the heat exchange unit 55 that could not be removed due to the heat generated by the second heater. Further, since the removing unit 14 is provided with the second heater that generates heat, the outdoor heat exchanger 105 can remove the frost adhering to the removing unit 14 due to the heat generated by the second heater, and the removing unit 14 can remove the frost. It is possible to prevent the attached frost from freezing. Further, since the removing unit 14 is provided with the second heater that generates heat, when the removing device 10 is located at the lower end portion 61a, the outdoor heat exchanger 105 is on the first header 71 due to the heat generated by the second heater. Frost can be removed. The outdoor heat exchanger 105 can prevent frost from freezing on the first header 71.
  • the outdoor heat exchanger 105 can remove the frost on the first header 71 by the heat generated by the third heater. It is possible to prevent the frost on the first header 71 from freezing.
  • the outdoor unit 106 described above includes the outdoor heat exchanger 105 according to any one of the first to seventh embodiments. Therefore, in the outdoor unit 106, the same effect as that of any one of the first to seventh embodiments can be obtained.
  • the refrigeration cycle device 100 described above includes the outdoor heat exchanger 105 according to any one of the first to seventh embodiments.
  • the refrigeration cycle device 100 described above includes an outdoor unit 106 having an outdoor heat exchanger 105 according to any one of the first to seventh embodiments. Therefore, in the refrigeration cycle apparatus 100, the same effect as that of any one of the first to seventh embodiments can be obtained.
  • each of the above embodiments 1 to 7 can be implemented in combination with each other. Further, the configuration shown in the above embodiment is an example, and can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible. For example, in the seventh embodiment, the configuration in which the first header 71 is provided with the third heater is described, but the second header 72 may also be provided with the third heater.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Other Air-Conditioning Systems (AREA)
PCT/JP2019/051089 2019-12-26 2019-12-26 熱交換器、室外機及び冷凍サイクル装置 Ceased WO2021130952A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19957198.5A EP4083556A4 (en) 2019-12-26 2019-12-26 HEAT EXCHANGER, OUTDOOR UNIT AND REFRIGERATION CYCLE DEVICE
JP2021566678A JP7224498B2 (ja) 2019-12-26 2019-12-26 熱交換器、室外機及び冷凍サイクル装置
PCT/JP2019/051089 WO2021130952A1 (ja) 2019-12-26 2019-12-26 熱交換器、室外機及び冷凍サイクル装置

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CN113908574A (zh) * 2021-11-11 2022-01-11 山东法恩泰科技工程有限公司 Mvr蒸发器
CN114251970A (zh) * 2021-12-22 2022-03-29 巢湖市鑫皖新能源有限公司 一种机械气动混合式空预器除灰装置
EP4269927A1 (de) * 2022-04-28 2023-11-01 3con Anlagebau GmbH Kälteregister zur kaltlufterzeugung
CN119879627A (zh) * 2025-03-14 2025-04-25 陕西延长石油榆林可可盖煤业有限公司 一种利用矿井余热的矿井换热设备及方法

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CN113908574A (zh) * 2021-11-11 2022-01-11 山东法恩泰科技工程有限公司 Mvr蒸发器
CN114251970A (zh) * 2021-12-22 2022-03-29 巢湖市鑫皖新能源有限公司 一种机械气动混合式空预器除灰装置
CN114251970B (zh) * 2021-12-22 2024-03-15 巢湖市鑫皖新能源有限公司 一种机械气动混合式空预器除灰装置
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EP4083556A4 (en) 2022-12-14
JP7224498B2 (ja) 2023-02-17
JPWO2021130952A1 (https=) 2021-07-01

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