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 PDFInfo
- 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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- 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
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Classifications
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- 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
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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
- 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
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- 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
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- 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
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- 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
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- 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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Abstract
Description
[冷凍サイクル装置100]
図1は、実施の形態1に係る室外熱交換器105を備えた冷凍サイクル装置100の構成を示す冷媒回路図である。なお、図1において、点線で示す矢印は、冷媒回路110において、冷房運転時における冷媒の流れる方向を示すものであり、実線で示す矢印は、暖房運転時における冷媒の流れる方向を示すものである。まず、図1を用いて室外熱交換器105を備えた冷凍サイクル装置100について説明する。
次に、図1を用いて冷凍サイクル装置100の動作の一例について説明する。冷凍サイクル装置100の暖房運転時には、圧縮機101から吐出される高圧高温のガス状態の冷媒は、流路切替装置102を介して室内熱交換器103に流入し、室内送風機109によって供給される空気と熱交換を行い凝縮する。凝縮した冷媒は、高圧の液状態となり、室内熱交換器103から流出し、減圧装置104によって、低圧の気液二相状態となる。低圧の気液二相状態の冷媒は、室外熱交換器105に流入し、室外送風機108によって供給される空気との熱交換によって蒸発する。蒸発した冷媒は、低圧のガス状態となり、圧縮機101に吸入される。なお、暖房運転時において、室外熱交換器105の圧力飽和温度が室外空気の露点温度以下で水の凝固点以下の場合、室外熱交換器105に霜が付着する。
図2は、実施の形態1に係る室外熱交換器105の要部構成を示す斜視図である。図3は、実施の形態1に係る室外熱交換器105を側面から見た概念図である。なお、図2において、矢印RFは、室外熱交換器105に流入し、又は、室外熱交換器105から流出する冷媒の流れを示すものである。また、図2において、矢印ARは、第2の熱交換流体の流れを示すものである。また、図2及び図3において、矢印MDは、第1の熱交換流体の流れ方向である。また、矢印MDは、伝熱管60の延伸方向に沿って移動する除去装置10の移動の方向を示すものである。図2及び図3を用いて、実施の形態1に係る室外熱交換器105について説明する。
熱交換部55は、図2及び図3に示すように、第1の熱交換流体を流通させる複数の伝熱管60であって、互いに間隔をあけて配置された複数の伝熱管60を有する。熱交換部55は、複数の伝熱管60の内部を流れる冷媒等の第1の熱交換流体と、複数の伝熱管60の周りに存在する空気等の第2の熱交換流体と、の間で熱交換を行わせる。
複数の伝熱管60のそれぞれは、第1の熱交換流体を内部に流通させる。複数の伝熱管60のそれぞれは、第1ヘッダ71と第2ヘッダ72との間に延伸している。複数の伝熱管60のそれぞれは、互いに間隔をあけて配置され、ヘッダ70の延伸方向である軸方向に並列している。複数の伝熱管60は、互いに対向するように配置されている。複数の伝熱管60のうち隣り合う2つの伝熱管60の間には、第2の熱交換流体の流路となる隙間が形成されている。
図2及び図3に戻り、ヘッダ70について説明する。ヘッダ70は、第2方向D2である複数の伝熱管60の配列方向に沿って延伸するように形成されている。ヘッダ70は、室外熱交換器105において、室外熱交換器105に流入する冷媒を、複数の伝熱管60に分配する流体分配機構として機能する。また、ヘッダ70は、室外熱交換器105において、室外熱交換器105から流出する冷媒が、複数の伝熱管60から流出して合流する流体合流機構としても機能する。
第1ヘッダ71は、第1ヘッダ71の内部と連通する第1冷媒接続管41を有する。第1基端部73bには、第1ヘッダ71の軸方向において外側に突出し、第1筒状部73aの内部と連通する第1冷媒接続管41が接続されている。第1冷媒接続管41は、内部を冷媒が流通する管状の部材である。第1冷媒接続管41は、例えば、円筒状に形成されている。第1冷媒接続管41は、第1ヘッダ71の管内と連通し、第1ヘッダ71に流入する冷媒の流入口を形成し、あるいは、第1ヘッダ71から流出する冷媒の流出口を形成する。
図5は、実施の形態1に係る室外熱交換器105を第1方向D1から見た上面図である。除去装置10は、第1の熱交換流体の流通方向である第1方向D1に沿って、複数の伝熱管60の隣り合う伝熱管60の間を移動する。より詳細には、熱交換部55は、複数の伝熱管60の隣り合う伝熱管60同士が伝熱促進部材によって接続されていない領域を有し、除去装置10は、当該領域における隣り合う伝熱管60の間を移動する。除去装置10は、複数の伝熱管60の隣り合う伝熱管60の間に配置され、第1の熱交換流体の流通方向である第1方向D1に沿って移動することで熱交換部55に付着した霜等の付着物を除去するものである。なお、付着物は、例えば、霜、あるいは、塵埃等である。すなわち、除去装置10は、霜以外に伝熱管60の表面に付着した塵埃の除去にも適用できる。なお、以下の説明では、除去装置10が霜を除去することを中心に記載する。
支持部12は、複数の伝熱管60の配列方向及びヘッダ70の延伸方向である、第2方向D2に沿って延びるように形成されている。支持部12は、第2方向D2に長尺状に形成されている。図5では、支持部12は、第2方向D2に長尺な四角柱状に形成されているが、第2方向D2に沿って形成されていればよく、支持部12の形状は、四角柱状に限定されるものではない。例えば、支持部12は、四角柱以外の多角柱状に形成されてもよく、円柱状に形成されてもよい。
複数の除去部14は、複数の伝熱管60の隣り合う伝熱管60の間に配置される。除去部14は、隣接する伝熱管60の間に配置され、支持部12の移動に伴い、伝熱管60の表面に付着した霜等の付着物を払い落とす。また、熱交換部55がフィン65を有する場合には、除去部14は、支持部12の移動に伴い、伝熱管60及びフィン65の表面に付着した霜等の付着物を払い落とす。
実施の形態1に係る室外熱交換器105の動作について、室外熱交換器105が冷凍サイクル装置100の蒸発器として機能する際の動作を例に挙げて説明する。蒸発器として機能する室外熱交換器105には、減圧装置104で減圧された気液二相冷媒が流入する。この際、冷媒は、第1冷媒接続管41を介して室外熱交換器105の第1ヘッダ71から流入し、複数の伝熱管60の本数と同一のパスに分離される。そして、冷媒は、複数の伝熱管60の冷媒通路62を流通して吸熱、蒸発し、第2ヘッダ72を通り第2冷媒接続管42から流出して冷媒回路110を循環する。
室外熱交換器105は、第1の熱交換流体の流通方向である第1方向D1に沿って、複数の伝熱管60の隣り合う伝熱管60の間を移動する除去装置を備えるものである。除去装置10は、室外熱交換器105の内部となる伝熱管60の間に配置され、伝熱管60の間に配置された除去装置10が伝熱管60に沿って移動することで、熱交換部55に付着した霜等の付着物は除去される。そのため、室外熱交換器105は、除去装置10によって、室外熱交換器105の内部に入り込んだ霜等の付着物を除去することができる。
図10は、実施の形態2に係る室外機106の構成を示す概念図である。なお、実施の形態1と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。実施の形態2に係る室外機106は、除去装置10の支持部12の配置を特定するものである。
室外機106は、第2の熱交換流体の流れる方向において、熱交換部55が配置されている位置と室外送風機108が配置されている位置との間に、除去装置10の支持部12が配置されていることで、支持部12は筐体52内に配置されている。室外送風機108が配置される筐体52の内部側に支持部12を配置することで、室外機106は、支持部12が筐体52から飛び出さない構造となる。そのため、室外機106は、除去装置10の支持部12が風雨に直接さらされることがなく、また、他の物体との接触を避けることができるため破損しにくくなる。更に、室外機106は、当該構成を有することで、ユーザと駆動する支持部12との接触を避けることができ、ユーザを保護することができる。
図11は、実施の形態3に係る室外熱交換器105の構成を示す概念図である。なお、実施の形態1~2と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。実施の形態3に係る室外熱交換器105は、除去装置10の支持部12の配置を特定するものである。
第3方向D3において、第1支持部12aは、複数の伝熱管60を挟んで一方の側に配置されており、第2支持部12bは、複数の伝熱管60を挟んで他方の側に配置されている。実施の形態3に係る室外熱交換器105及び室外熱交換器105を備えた室外機106は、第2の熱交換流体の流れる方向において、支持部12が除去部14を前後から挟み込む形で強固に支持することができるため、除去部14の破損が生じにくくなる。
図12は、実施の形態4に係る室外熱交換器105の制御に関する構成例を示すブロック図である。なお、実施の形態1~3と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。実施の形態4に係る室外熱交換器105は、除去装置10の動作を特定するものである。
室外機106の室外熱交換器105は、制御装置80を有している。制御装置80は、測定装置30によって測定された検出温度に基づき、除去装置10を制御する。図12に示すように、制御装置80は、プログラムを記憶するメモリ84と、プログラムにしたがって処理を実行するCPU82(Central Processing Unit)と、計時装置86とを有する。制御装置80は、例えば、マイクロコンピュータである。制御装置80は、測定装置30及び駆動装置90と有線又は無線で接続されている。
メモリ84は、制御装置80が各種処理を行う際に用いるデータを記憶している。メモリ84は、データを一時的に記憶できるランダムアクセスメモリ(RAM)などの揮発性記憶装置(図示せず)、あるいは、ハードディスク、データを長期的に記憶できるフラッシュメモリなどの不揮発性の補助記憶装置(図示せず)を有している。メモリ84には、第1温度検出装置31の検出温度に対する任意の設定温度である設定値Taが予め記憶されている。同様に、メモリ84には、第2温度検出装置32の検出温度に対する任意の設定温度である設定値Tbが予め記憶されている。また、メモリ84には、除去装置10を定期的に動かすための任意の設定時間である設定時間Tmが予め記憶されている。
計時装置86は、タイマ等を有し、制御装置80が時間の判定に用いる計時を行う。
除去装置10は、デフォルトとなる停止時には第1方向D1において下方に位置している。詳細には、室外熱交換器105は、上下方向において、第1ヘッダ71が下方に配置され、第2ヘッダ72が上方に設置されており、複数の伝熱管60は、上下方向に延びるように設けられている。そして、除去装置10は、停止時に第2ヘッダ72に対して第1ヘッダ71側に配置されており、複数の伝熱管60の延びる方向の下端部61aに配置されている。
除去装置10は、付着物の除去作業時には下端部61a側から上方に向かって移動し、複数の伝熱管60の上端部61b側から下方に向かって移動する。そのため、室外熱交換器105は、除去装置10によって熱交換部55から払い落した霜等の付着物が伝熱管60の下方に位置している第1ヘッダ71上に堆積することを抑制する。
図13は、実施の形態5に係る室外熱交換器105の構成を示す概念図である。図14は、実施の形態5に係る室外熱交換器105の第1の変形例の構成を示す概念図である。図15は、実施の形態5に係る室外熱交換器105の第2の変形例の構成を示す概念図である。図13~図15に示す矢印MD1は、除去装置10の移動の方向を示すものであり、停止位置から上方に移動していくことを表している。なお、実施の形態1~4と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。実施の形態5に係る室外熱交換器105は、除去装置10の除去部14の形状を更に特定するものである。
複数の除去部14は、ヘッダ70のうち、除去装置10の下方に配置されている第1ヘッダ71の幅WHよりも長く形成されている。そして、複数の除去部14の長手方向における少なくとも一方の端部が、第1ヘッダ71の外郭を構成する第1筒状部73aよりも外側に位置している。除去部14が当該構成を有することで、室外熱交換器105は、除去装置10の移動に伴い、熱交換部55から払い落される霜等の付着物は、除去装置10の上面側に乗って払い落されるため除去装置10の下方に位置する第1ヘッダ71上に直接落下しない。そのため、室外熱交換器105は、除去装置10によって熱交換部55から払い落した霜等の付着物が伝熱管60の下方に位置している第1ヘッダ71上に堆積することを抑制することができる。そして、伝熱管60の下部の隙間が堆積した霜等の付着物によって閉塞してしまうことを抑制できる。
図16は、実施の形態6に係る室外熱交換器105の構成を示す概念図である。なお、実施の形態1~5と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。実施の形態6に係る室外熱交換器105は、伝熱管60の構成を更に特定するものである。
実施の形態6に係る室外熱交換器105は、第3方向D3において、複数の伝熱管60を有するものである。そして、室外熱交換器105は、隣り合う除去部14同士の間に、複数の伝熱管60が配置されている。そのため、室外熱交換器105は、実施の形態6に係る室外熱交換器105は、第3方向D3において、複数の伝熱管60を有する構成であっても、熱交換部55に付着する霜等の付着物を除去することができる。
図17は、実施の形態7に係る室外熱交換器105の要部構成を示す斜視図である。図18は、実施の形態7に係る室外熱交換器105を側面から見た概念図である。なお、実施の形態1~6と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。
支持部12が第1ヒーターを備えていることで、室外熱交換器105は、第1ヒーターの発熱によって、払い落せなかった熱交換部55に付着した霜を除去することができる。また、支持部12が発熱する第1ヒーターを備えていることで、室外熱交換器105は、第1ヒーターの発熱によって、支持部12に付着した霜を除去することができ、支持部12に付着した霜が凍りつくことを防止することができる。また、支持部12が発熱する第1ヒーターを備えていることで、室外熱交換器105は、第1ヒーターの発熱によって、第1ヘッダ71上の霜を除去することができ、第1ヘッダ71上の霜が凍りつくことを防止することができる。
上記で説明した室外機106は、実施の形態1~7のいずれかに係る室外熱交換器105を備えたものである。そのため、室外機106において、実施の形態1~7のいずれかと同様の効果が得られる。
上記で説明した冷凍サイクル装置100は、実施の形態1~7のいずれかに係る室外熱交換器105を備えたものである。上記で説明した冷凍サイクル装置100は、実施の形態1~7のいずれかに係る室外熱交換器105を有する室外機106を備えたものである。そのため、冷凍サイクル装置100において、実施の形態1~7のいずれかと同様の効果が得られる。
Claims (22)
- 第1の熱交換流体を流通させる複数の伝熱管であって、互いに間隔をあけて配置された前記複数の伝熱管を有する熱交換部と、
前記第1の熱交換流体の流通方向である第1方向に沿って、前記複数の伝熱管の隣り合う伝熱管の間を移動する除去装置と、
を備えた熱交換器。 - 前記熱交換部は、前記複数の伝熱管の前記隣り合う伝熱管同士が伝熱促進部材によって接続されていない領域を有し、
前記除去装置は、前記領域における前記隣り合う伝熱管の間を移動する請求項1に記載の熱交換器。 - 前記複数の伝熱管は、上下方向に延びるように設けられており、
前記除去装置は、
付着物の除去作業時には前記複数の伝熱管の下端部から上方に向かって移動して、下方に向かって移動する請求項1又は2に記載の熱交換器。 - 前記熱交換部は、
前記第1方向及び前記複数の伝熱管が並ぶ第2方向に平行な面に交差する第3方向において、前記複数の伝熱管のそれぞれの側端部から前記第3方向に延びるフィンを更に有し、
前記除去装置は、
前記隣り合う伝熱管同士の間、及び、隣り合う前記フィン同士の間を移動する請求項1~3のいずれか1項に記載の熱交換器。 - 前記複数の伝熱管を構成するそれぞれの伝熱管は、
内部を冷媒が流れる複数の冷媒通路が形成されている扁平管である請求項1~4のいずれか1項に記載の熱交換器。 - 前記除去装置は、
前記複数の伝熱管の前記隣り合う伝熱管の間に配置された除去部と、
前記除去部が固定され、前記第1方向に沿って移動自在な支持部と、
を有する請求項1~5のいずれか1項に記載の熱交換器。 - 前記支持部は、
発熱する第1ヒーターを備えている請求項6に記載の熱交換器。 - 前記除去部は、
発熱する第2ヒーターを備えている請求項6又は7に記載の熱交換器。 - 前記第1方向における前記複数の伝熱管の両端部に接続されたヘッダを更に備え、
前記第1方向及び前記複数の伝熱管が並ぶ第2方向に平行な面に垂直な方向において、
前記除去部は、
前記ヘッダのうち、前記除去装置の下方に配置されている第1ヘッダの幅よりも長く形成されており、
前記除去部の長手方向における少なくとも一方の端部が、前記第1ヘッダの外郭を構成する筒状部よりも外側に位置している請求項6~8のいずれか1項に記載の熱交換器。 - 前記第1ヘッダは、
発熱する第3ヒーターを備えている請求項9に記載の熱交換器。 - 前記除去部は、
前記支持部から延びる方向である前記除去部の長手方向において、先端側及び根元側の少なくともいずれか一方の端部が下方に向かうように湾曲している請求項6~10のいずれか1項に記載の熱交換器。 - 前記除去部は、
前記支持部に固定され、前記支持部から延びる基部と、
前記基部から突出し、前記熱交換部と当接する接触部と、
を有する請求項6~11のいずれか1項に記載の熱交換器。 - 前記接触部が回転する請求項12に記載の熱交換器。
- 前記接触部が振動する請求項12に記載の熱交換器。
- 前記除去部は、
筒状に形成され、空気を噴出させる少なくとも1つ以上の噴出孔が前記熱交換部と対向する位置に形成された本体部を有している請求項6~11のいずれか1項に記載の熱交換器。 - 前記支持部は、
前記第1方向及び前記複数の伝熱管が並ぶ第2方向に平行な面に交差する第3方向において、
前記複数の伝熱管の一方の側に配置された第1支持部と、
前記複数の伝熱管の他方の側に配置された第2支持部と、
を有し、
前記除去装置は、
前記除去部の一端が前記第1支持部と固定され、前記除去部の他端が前記第2支持部と固定されている請求項6~15のいずれか1項に記載の熱交換器。 - 請求項1~16のいずれか1項に記載の熱交換器と、
前記複数の伝熱管の前記隣り合う伝熱管の間を流通させる第2の熱交換流体の流れを形成する送風機と、
前記熱交換器と前記送風機とを収納した筐体と、
を備えた室外機。 - 請求項6~15のいずれか1項に記載の熱交換器と、
前記複数の伝熱管の前記隣り合う伝熱管の間を流通させる第2の熱交換流体の流れを形成する送風機と、
前記熱交換器と前記送風機とを収納した筐体と、
を備え、
前記第2の熱交換流体の流れる方向において、前記熱交換部が配置されている位置と前記送風機が配置されている位置との間に、前記支持部が配置されている室外機。 - 前記除去装置を制御する制御装置を更に備え、
前記制御装置は、
定期的に前記除去装置の移動を開始させる請求項17又は18に記載の室外機。 - 冷媒温度又は外気温度を測定する測定装置と、
前記測定装置によって測定された検出温度に基づき、前記除去装置を制御する制御装置と、
を更に備え、
前記制御装置は、
前記検出温度が設定温度を下回る場合には前記除去装置の移動を開始させる請求項17又は18に記載の室外機。 - 請求項1~16のいずれか1項に記載の熱交換器を備えた冷凍サイクル装置。
- 請求項17~20のいずれか1項に記載の室外機を備えた冷凍サイクル装置。
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| 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 |
| 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 |
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| 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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| CN115929454A (zh) * | 2022-12-30 | 2023-04-07 | 扬州市东华星动力科技有限公司 | 一种柴油发电机散热器 |
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| EP4083556A4 (en) | 2022-12-14 |
| JP7224498B2 (ja) | 2023-02-17 |
| EP4083556A1 (en) | 2022-11-02 |
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