WO2013168526A1 - Echangeur de chaleur et dispositif de climatisation de véhicule - Google Patents

Echangeur de chaleur et dispositif de climatisation de véhicule Download PDF

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Publication number
WO2013168526A1
WO2013168526A1 PCT/JP2013/061376 JP2013061376W WO2013168526A1 WO 2013168526 A1 WO2013168526 A1 WO 2013168526A1 JP 2013061376 W JP2013061376 W JP 2013061376W WO 2013168526 A1 WO2013168526 A1 WO 2013168526A1
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WIPO (PCT)
Prior art keywords
refrigerant
heat
heat medium
header tank
flat tube
Prior art date
Application number
PCT/JP2013/061376
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English (en)
Japanese (ja)
Inventor
仲戸　宏治
上坊寺　康修
克弘 齊藤
敏久 近藤
Original Assignee
三菱重工オートモーティブサーマルシステムズ株式会社
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Publication of WO2013168526A1 publication Critical patent/WO2013168526A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B60H1/00914—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is a bypass of the condenser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
    • B60H1/32281—Cooling devices using compression characterised by refrigerant circuit configurations comprising a single secondary circuit, e.g. at evaporator or condenser side
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • 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
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the present invention relates to a heat exchanger suitable for heat exchange between a refrigerant and a heat medium, and a vehicle air conditioner using the heat exchanger.
  • HEV hybrid vehicles
  • PHEV plug-in hybrid vehicles
  • the exhaust heat of the internal combustion engine is used as a heat source for heating, but the amount of exhaust heat is decreasing due to the efficiency improvement of the internal combustion engine.
  • a heat medium such as a coolant with heat generated by a PTC heater and use it as a heat source for heating.
  • a power source for the PTC heater becomes indispensable, and the power consumption increases accordingly.
  • An increase in power consumption in the air conditioner means a decrease in the cruising distance of the vehicle, leading to a deterioration in the original performance of the vehicle.
  • a heat pump is used for the air conditioner for the vehicle, an in-vehicle condenser is provided in the HVAC unit (Heating Ventilation and Air Conditioning Unit), and refrigerant and coolant (cooling water) are provided in a cooling water circulation circuit such as an electric motor for traveling.
  • Patent Document 1 provides a heat pump type vehicle air conditioner that includes a refrigerant / coolant heat exchanger that also serves as a radiator for exchanging heat, and that includes the refrigerant / coolant heat exchanger and the in-vehicle condenser to constitute a heat pump cycle. Yes.
  • the heat pump type vehicle air conditioner disclosed in Patent Document 1 uses a refrigerant / coolant heat exchanger that exchanges heat between a refrigerant and a coolant (cooling water).
  • this refrigerant / coolant heat exchanger has a configuration in which a refrigerant flat tube through which a refrigerant is circulated and a coolant flat tube through which a coolant is circulated are alternately stacked in multiple layers via corrugated fins through which air is circulated.
  • the heat exchange between the refrigerant and the coolant is performed via fins and air. For this reason, there is a problem that a loss is caused by the amount of air passing through the fins and air, and efficiency is lowered.
  • the HVAC unit of the current system that uses the exhaust heat of the internal combustion engine, which is configured to include a radiator in which a heat medium is circulated in the air flow path in the HVAC unit, must be significantly changed. There are issues such as increased development costs.
  • the present invention has been made in view of such circumstances, and is a small high-performance and high pressure-resistant heat exchanger capable of efficiently exchanging heat between a heat medium and a high-temperature and high-pressure refrigerant, and heating with the heat exchanger. It is an object of the present invention to provide a vehicle air conditioner that consumes less power and can be heated using the heated heat medium as a heat source for heating.
  • the heat exchanger according to the first aspect of the present invention is a heat exchanger for exchanging heat between a refrigerant and a heat medium, wherein a refrigerant flat tube through which a plurality of refrigerants are circulated and a plurality of heat media are circulated.
  • the heat transfer flat tubes are alternately stacked in multiple layers and joined together, and a pair of refrigerant and heat medium are distributed and collected at both ends of the plurality of flat tubes for refrigerant and the flat tubes for heat medium, respectively.
  • the refrigerant side header tank and the heat medium side header tank are provided.
  • a plurality of refrigerant flat tubes and a plurality of heat medium flat tubes are alternately stacked in multiple layers, joined together, and a plurality of refrigerant flat tubes and heat medium flat tubes
  • a pair of refrigerant side header tanks and heat medium side header tanks for distributing and collecting the refrigerant and the heat medium are provided at both ends. Therefore, the refrigerant and the heat medium circulating in the refrigerant flat tube and the heat medium flat tube are directly heat-exchanged through the tube walls of the flat tubes joined to each other, and the heat medium is heated or cooled by the refrigerant. Can do.
  • the pressure resistance of each flat tube can be increased. Therefore, the heat exchange efficiency can be improved and the heat exchanger can be reduced in size and performance as compared with those in which heat exchange is performed between the two media via air or fins.
  • the present invention can also be effectively applied to a high-pressure refrigerant / heat medium heat exchanger for a heating heat source for heat exchange.
  • the heat exchanger includes at least the refrigerant flat tube and the heat medium side header tank to which the refrigerant flat tube, the heat medium flat tube, and both tubes are respectively connected.
  • the flat tube for heat medium may have a configuration in which a brazing material is clad on the surface, and each may be integrated by brazing and joining.
  • a brazing material is clad on the surface, and each is integrated by brazing joint. Therefore, it is possible to integrally assemble and join the flat tube and the header tank with the brazing material clad on the surface by temporarily assembling and brazing them in a furnace.
  • the refrigerant and the heat medium can be directly heat-exchanged by heat conduction between the flat tubes joined via the brazing material, heat transfer loss can be minimized and the heat exchange efficiency can be improved, and the refrigerant / heat medium A heat exchanger can be produced efficiently.
  • any one of the heat exchangers described above includes an integrated header in which the refrigerant side header tank and the heat medium side header tank are partitioned into a refrigerant side header tank part and a heat medium side header tank part through a partition. It may be configured as a tank.
  • the refrigerant side header tank and the heat medium side header tank are integrated header tanks that are partitioned into the refrigerant side header tank part and the heat medium side header tank part via the partition. Therefore, the number of header tanks can be halved by using an integrated header tank, and heat exchange between both media can be promoted even in the header tank. Therefore, the heat exchanger can be improved in performance by reducing the number of parts and increasing the heat transfer area.
  • the above-described heat exchanger may be configured such that the integrated header tank is a header tank made of an extruded product.
  • the integrated header tank is a header tank configured by an extruded product. Therefore, by making the header tank an extrusion-molded product, it is possible to obtain a header tank with high pressure resistance with as few joints as possible. Therefore, it is easy to ensure pressure resistance, and can be effectively applied to a high-pressure refrigerant / heat-medium heat exchanger for a heating heat source for exchanging heat between a high-temperature and high-pressure refrigerant gas and a heat medium.
  • any of the above-described heat exchangers may have a configuration in which the flat tube for refrigerant and / or the flat tube for heat medium is an extruded product or a laminated plate type flat tube into which an inner fin is inserted.
  • the flat tube for refrigerant and / or the flat tube for heat medium is an extruded product or a laminated plate type flat tube with an inner fin inserted. Therefore, each flat tube can be made into a tube with high pressure resistance by making the flat tube into an extruded product or a laminated plate type tube into which an inner fin is inserted. Therefore, it is easy to ensure pressure resistance, and can be effectively applied to a high-pressure refrigerant / heat-medium heat exchanger for a heating heat source for exchanging heat between a high-temperature and high-pressure refrigerant gas and a heat medium.
  • any one of the heat exchangers described above has at least one or more of distributing the refrigerant and the heat medium to each of the plurality of tube groups along the length direction of the refrigerant side header tank and the heat medium side header tank. It is good also as a structure by which the partition is provided and the refrigerant
  • the refrigerant-side header tank and the heat medium-side header tank are provided with at least one partition that distributes the refrigerant and the heat medium for each of the plurality of tube groups along the length direction thereof.
  • the path is divided so that the heat medium is circulated one or more times between the inlet and the outlet. Therefore, by circulating the refrigerant and the heat medium so as to meander through the plurality of divided tube groups, the two media can exchange heat with each other over a sufficient time. . Therefore, the heat exchange rate can be improved and the performance of the heat exchanger can be improved.
  • any of the heat exchangers described above may have a configuration in which a sacrificial anticorrosion layer is provided on the internal flow path side through which the heat medium in the heat medium flat tube and the heat medium side header tank flows.
  • the sacrificial anticorrosion layer is provided on the internal flow path side through which the heat medium flows in the heat medium flat tube and the heat medium side header tank. Therefore, the sacrificial anticorrosion layer can prevent corrosion of the heat medium flat tube through which the heat medium flows and the internal flow path of the heat medium side header tank. Therefore, it is possible to prevent corrosion of the internal flow path by the heat medium that may be used or mixed with various media, and to improve the corrosion resistance of the heat exchanger.
  • any one of the heat exchangers described above includes a heat insulating casing in which a core portion of the refrigerant flat tube, the heat medium flat tube, the refrigerant side header tank, and the heat medium side header tank of the heat exchanger is provided. It is good also as a structure stored in the inside of a body.
  • the core portion including the refrigerant flat tube, the heat medium flat tube, the refrigerant side header tank, and the heat medium side header tank of the heat exchanger is stored in the heat insulating casing. Therefore, heat transfer from the core portion of the heat exchanger to the surrounding air can be shielded by the heat insulating casing. Therefore, heat loss can be reduced, and the heat medium can be efficiently heated or cooled by effectively using the heat of the refrigerant.
  • a vehicle air conditioner includes a heat medium circulation circuit that circulates a heat medium to a radiator disposed in an HVAC unit in which vehicle interior air or outside air is circulated, and the HVAC unit.
  • a heat pump cycle that circulates a refrigerant in an evaporator disposed therein, and a heat exchanger that exchanges heat between a heat medium that circulates in the heat medium circulation circuit and a high-temperature and high-pressure refrigerant gas that circulates in the heat pump cycle /
  • the heat medium heat exchanger is any one of the heat exchangers described above.
  • the refrigerant / heat medium heat exchange that exchanges heat between the heat medium that circulates in the heat medium circuit that circulates the heat medium to the radiator and the high-temperature and high-pressure refrigerant gas that circulates in the heat pump cycle.
  • the vessel is one of the heat exchangers described above. For this reason, the heat transfer medium circulating in the heat transfer circuit and the high-temperature and high-pressure refrigerant gas circulating in the heat pump cycle are combined with a high-pressure, compact, high-performance refrigerant / heat transfer medium heat exchanger to change the tube wall of the flat tube.
  • the heat medium can be directly exchanged through heat, and the heat medium can be heated by the high-temperature and high-pressure refrigerant gas and supplied to the radiator.
  • the energy efficiency can be greatly improved, and the power consumption in the air conditioner is reduced.
  • the cruising distance of the vehicle can be extended, and the HVAC unit of the current system can be used as it is, thereby reducing development costs.
  • the refrigerant circulating through the flat tube for refrigerant and the flat tube for heat medium and the heat medium are directly heat-exchanged through the tube walls of the flat tubes joined to each other, and heat is generated by the refrigerant.
  • the medium can be heated or cooled, and the flat surfaces of the flat tubes stacked in multiple layers are joined to each other, so that the pressure resistance of each flat tube can be increased. Therefore, compared to the heat exchange between two media through air or fins, the heat exchange efficiency can be improved, the heat exchanger can be made smaller and more efficient, and the high-temperature and high-pressure refrigerant gas and the heat medium can be combined.
  • the present invention can also be effectively applied to a high-pressure refrigerant / heat medium heat exchanger for a heating heat source for heat exchange.
  • the heat medium circulating in the heat medium circulation circuit and the high-temperature and high-pressure refrigerant gas circulating in the heat pump cycle are reduced in size and performance of refrigerant / heat medium heat exchange with high-pressure specifications.
  • the heat exchanger can directly exchange heat through the tube wall of the flat tube, and the heat medium can be heated by the high-temperature and high-pressure refrigerant gas and supplied to the radiator. Therefore, compared to an air conditioner that heats the heat medium supplied to the radiator with a PTC heater or the like and uses it as a heat source for heating, the energy efficiency can be significantly improved, and the power consumption in the air conditioner is reduced. As a result, the cruising range of the vehicle can be extended, and the HVAC unit of the current system can be used as it is, thereby reducing development costs.
  • FIG. 1 It is a disassembled perspective view of the heat exchanger which concerns on 1st Embodiment of this invention. It is the front view (A) and top view (B) of the heat exchanger which concern on 2nd Embodiment of this invention. It is a block diagram of the vehicle air conditioner using the heat exchanger shown in FIG.
  • FIG. 1 is an exploded perspective view of the heat exchanger according to the first embodiment of the present invention.
  • the heat exchanger 1 is a refrigerant / heat medium heat exchanger that directly heat-exchanges a refrigerant, particularly high-temperature and high-pressure refrigerant gas discharged from a compressor, and a heat medium such as a coolant, and heats the heat medium with the refrigerant.
  • circulates a heat medium are provided.
  • the refrigerant flat tube 2 and the heat medium flat tube 3 can use flat tubes having the same configuration.
  • An alloy extruded tube or a pair of molded plates made of a thin aluminum alloy plate are stacked, and an inner fin formed by corrugating a thin aluminum alloy plate is inserted inside and joined together. Therefore, it is possible to use a laminated plate type tube or the like forming a large number of separated flow paths.
  • the refrigerant flat tube 2 and the heat medium flat tube 3 are, for example, flat tubes having a thickness of about 1 mm to 2 mm and a width of about 10 mm to 30 mm, and are used after being cut to a predetermined length.
  • the brazing material for brazing on the surface is clad. Further, both ends of the refrigerant flat tube 2 and the heat medium flat tube 3 cut to a predetermined length are connected to refrigerant side header tanks 6 and 7 and heat medium side header tanks 8 and 9, which will be described later. Insertions 4 and 5 are provided.
  • the refrigerant flat tube 2 and the heat medium flat tube 3 are each formed by alternately laminating a plurality of flat tubes and brazing them in a furnace as will be described later.
  • the flat surfaces of the flat tube 3 are joined to each other.
  • a pair of refrigerant side header tanks 6 and 7 and heat medium side header tanks 8 and 9 are respectively connected to both ends of the refrigerant flat tube 2 and the heat medium flat tube 3 through insertion portions 4 and 5, respectively. It has become so.
  • the refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 have pipe-shaped header tanks arranged in parallel to each other, and are provided at opposite ends of the refrigerant flat tube 2 on their parallel opposing surfaces.
  • the horizontally long tube insertion hole 10 into which the insertion portion 4 is inserted and the horizontally long tube insertion hole 11 into which the insertion portions 5 provided at both ends of the flat tube 3 for heat medium are inserted are provided. Yes.
  • the refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 are also made of aluminum alloy.
  • the refrigerant side header tank 6 is a header tank on the refrigerant inlet side, a refrigerant inlet portion (not shown) is provided, the refrigerant side header tank 7 is a header tank on the refrigerant outlet side, and a refrigerant outlet (not shown) is shown. It is set as the structure by which the part was provided.
  • the heat medium side header tank 8 is a header tank on the heat medium inlet side, a heat medium inlet part (not shown) is provided, and the heat medium side header tank 9 is a header tank part on the heat medium outlet side.
  • a heat medium outlet portion (not shown) is provided, and the refrigerant and the heat medium are circulated as indicated by solid arrows.
  • the refrigerant side header tank 6 and the heat medium side header tank 8 are the refrigerant and heat medium inlet side header tank
  • the refrigerant side header tank 7 and the heat medium side header tank 9 are the refrigerant and heat medium outlet side.
  • a parallel flow type refrigerant / heat medium heat exchanger (heat exchanger) 1 is shown as a header tank, the inlet side and the outlet side of the header tank of one medium are reversed, for example, heat It goes without saying that the medium may be circulated from the header tank 9 to the header tank 8 side to form a counter flow type refrigerant / heat medium heat exchanger (heat exchanger) 1.
  • the refrigerant / heat-medium heat exchanger (heat exchanger) 1 uses an assembly jig, and a plurality of flat refrigerant tubes 2 and flat tubes 3 for heat medium are alternately stacked in multiple layers, respectively.
  • the refrigerant side header tanks 6 and 7 are inserted into the insertion portions 4 at both ends of the flat tube 2 through the tube insertion holes 10, and heat is inserted into the insertion portions 5 at both ends of the flat tube 3 for heat medium through the tube insertion holes 11.
  • the medium side header tanks 8 and 9 the refrigerant flat tube 2, the heat medium flat tube 3, the refrigerant side header tanks 6 and 7, and the heat medium side header tanks 8 and 9 can be temporarily assembled.
  • the temporarily assembled refrigerant / heat medium heat exchanger 1 is placed in a furnace and heated to a predetermined temperature to melt the brazing material clad on the surfaces of the refrigerant flat tube 2 and the heat medium flat tube 3, With the brazing material, the flat surfaces of the refrigerant flat tube 2 and the heat medium flat tube 3, the space between the refrigerant flat tube 2 and the refrigerant side header tanks 6 and 7, and the heat medium flat tube 3 and the heat medium side header tank.
  • the refrigerant / heat-medium heat exchanger 1 can be manufactured by brazing between 8 and 9 and integrally sealing and joining them.
  • the refrigerant / heat medium heat exchanger 1 is arranged in the refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 along the length direction of the refrigerant and heat medium for each of a plurality of tube groups.
  • One or more partition plates 12 are provided to distribute the refrigerant, and the refrigerant and the heat medium flowing into the refrigerant side header tank 6 and the heat medium side header tank 8 that are the inlet side header tank are the refrigerant side header that is the outlet side header tank. While flowing out from the tank 7 and the heat medium side header tank 9, it is good also as a structure which divided
  • the same header tank is provided with refrigerant and heat medium inlet / outlet.
  • the inlet of the heat medium and the outlet of the refrigerant and the heat medium are provided on the other header tank side.
  • a sacrificial anticorrosion layer is provided on the heat medium flat tube 3 through which the heat medium flows and the internal flow path side of the heat medium side header tanks 8 and 9.
  • the refrigerant / heat medium heat exchanger 1 that exchanges heat between the high-temperature and high-pressure refrigerant gas and the heat medium, the refrigerant flat tube 2 through which a plurality of refrigerants are circulated,
  • the heat medium flat tubes 3 through which a plurality of heat media are circulated are alternately laminated in multiple layers and brazed to each other, and are attached to both ends of the plurality of refrigerant flat tubes 2 and the heat medium flat tubes 3.
  • the pair of refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 for distributing and collecting the refrigerant and the heat medium are provided.
  • the tube walls of the refrigerant flat tube 2 and the heat medium flat tube 3 in which the high-temperature and high-pressure refrigerant flowing through the refrigerant flat tube 2 and the heat medium flat tube 3 and the heat medium are brazed to each other are joined.
  • the heat medium can be heated directly by the high-temperature and high-pressure refrigerant.
  • the flat surfaces of the refrigerant flat tube 2 and the heat medium flat tube 3 stacked in multiple layers are brazed to each other, the refrigerant flat tube 2 and the heat medium flat tube are combined. 3 can be improved in pressure resistance.
  • the heat exchange efficiency can be improved and the refrigerant / heat medium heat exchanger 1 can be reduced in size and performance as compared with the case where heat is exchanged between the two media via air or fins, and a high-temperature and high-pressure refrigerant can be obtained.
  • the present invention can also be effectively applied to a high-pressure refrigerant / heat medium heat exchanger 1 for a heating heat source that exchanges heat between a gas and a heat medium.
  • At least the refrigerant flat tube 2 and the heat medium flat tube 3 have a structure in which a brazing material is clad on the surface, and each is integrated by brazing joint.
  • the refrigerant flat tube 2 and the heat medium flat tube 3 clad with the brazing material, the refrigerant header tanks 6 and 7 and the heat medium header tanks 8 and 9 are temporarily assembled, and they are placed in the furnace.
  • they can be assembled and joined together. Therefore, the refrigerant and the heat medium can be directly heat-exchanged by heat conduction between the refrigerant flat tube 2 and the heat medium flat tube 3 joined via the brazing material, and heat transfer loss is minimized to improve heat exchange efficiency.
  • the refrigerant / heat medium heat exchanger 1 can be produced efficiently.
  • the refrigerant flat tube 2 and / or the heat medium flat tube 3 is an extruded product or a laminated plate type flat tube into which an inner fin is inserted, the refrigerant flat tube 2 and / or the heat medium.
  • the flat tube 3 for use into an extrusion molded product or a laminated plate type tube into which an inner fin is inserted each of the flat tube 2 for refrigerant and the flat tube 3 for heat medium can be made a high pressure-resistant tube. Therefore, it is easy to ensure pressure resistance, and it can be effectively applied to the high-pressure refrigerant / heat medium heat exchanger 1 for a heating heat source that exchanges heat between a high-temperature and high-pressure refrigerant gas and a heat medium.
  • the refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 are divided into a plurality of refrigerant flat tubes 2 and heat medium flat tubes 3 along the length direction.
  • At least one or more partition plates 12 for distributing the refrigerant and the heat medium are provided, and the path is divided so that the refrigerant and the heat medium are circulated one or more times from the inlet to the outlet.
  • the refrigerant and the heat medium are circulated in a meandering manner by turning the refrigerant and the heat medium one or more times through the plurality of refrigerant flat tubes 2 and the heat medium flat tubes 3 divided by the pass, Heat can be exchanged over time. Therefore, a heat exchange rate can be improved and the heat exchanger 1 can be improved in performance.
  • the sacrificial anticorrosion layer is provided in the internal flow path through which the heat medium flows in the heat medium flat tube 3 and the heat medium header tanks 8 and 9, the heat medium through which the heat medium flows.
  • the sacrificial anticorrosion layer can prevent corrosion of the internal flow paths of the flat tube 3 for use and the heat medium side header tanks 8 and 9. Therefore, corrosion of the internal flow path due to the heat medium that may be used or mixed with various media can be prevented, and the corrosion resistance of the heat exchanger 1 can be improved.
  • FIGS. 1 and 22 differs in the structure of the header tanks 21 and 22 with respect to above-described 1st Embodiment. Since other points are the same as those in the first embodiment, description thereof will be omitted.
  • the header tanks 21 and 22 provided at both ends of the refrigerant flat tube 2 and the heat medium flat tube 3 are provided with partitions 23 and 24 inside, and the inside is formed with the refrigerant side header tank portions 25 and 26.
  • the integrated header tanks 21 and 22 are partitioned into heat medium side header tank portions 27 and 28.
  • the integrated header tanks 21 and 22 are made of extruded products.
  • the external sides of the integrated header tanks 21 and 22 are refrigerant side header tank portions 25 and 26
  • the internal sides are heat medium side header tank portions 27 and 28, and both ends of the refrigerant flat tube 2 are heated.
  • the medium side header tank parts 27 and 28 and the partitions 23 and 24 are connected to the refrigerant side header tank parts 25 and 26.
  • both ends of the heat medium flat tube 3 are connected to the heat medium side header tank portions 27 and 28.
  • the heat medium side header tank portions 27 and 28 may be provided on the outside side and the refrigerant side header tank portions 25 and 26 may be provided on the inside side.
  • the refrigerant side header tank and the heat medium side header tank are partitioned into the refrigerant side header tank parts 25 and 26 and the heat medium side header tank parts 27 and 28 through the partitions 23 and 24.
  • the integrated header tanks 21 and 22 can be used. Therefore, the number of header tanks can be halved by using the integrated header tanks 21 and 22, and heat exchange between both media can be promoted in the integrated header tanks 21 and 22. Therefore, the refrigerant / heat medium heat exchanger 1 can be improved in performance by reducing the number of parts and increasing the heat transfer area.
  • the present embodiment relates to a heat pump type vehicle air conditioner 30 to which the heat exchanger (refrigerant / heat medium heat exchanger) 1 shown in the first and second embodiments described above is applied.
  • the heat pump vehicle air conditioner 30 includes an HVAC unit (Heating Ventilation and Air Conditioning Unit) 31, a heat medium circulation circuit 32, and a heat pump cycle 33. Further, a cooling water circulation circuit 35 such as an engine or a motor connected to the heat medium circulation circuit 32 via a four-way switching valve 34 is provided.
  • HVAC unit Heating Ventilation and Air Conditioning Unit
  • a cooling water circulation circuit 35 such as an engine or a motor connected to the heat medium circulation circuit 32 via a four-way switching valve 34 is provided.
  • the HVAC unit 31 includes a blower 38 that sucks and circulates inside air or outside air in the vehicle interior, a PTC heater 39 for heating assistance, an evaporator 40, and a radiator 41.
  • the inside air or the outside air circulated by the blower 38 is cooled, heated or dehumidified by the PTC heater 39, the evaporator 40, the radiator 41, etc., and blown out into the vehicle.
  • a known current system can be applied to the HVAC unit 31 as it is.
  • the heat medium circulation circuit 32 circulates the heat medium heated by the refrigerant / heat medium heat exchanger 1 to the radiator 41 of the HVAC unit 31, and includes a heat medium circulation pump 42, a four-way switching valve 34, The refrigerant / heat medium heat exchanger 1, the radiator 41, and the buffer tank 43 are sequentially connected by piping.
  • the core of the heat exchanger 1 that is, the refrigerant flat tube 2, the heat medium flat tube 3, the refrigerant side header tank 6, 7 and the heat medium side header tanks 8 and 9 or the integrated header tanks 21 and 22 and the like are housed and installed in the heat-insulating housing 44, and the heat exchanger 1 is connected to the ambient air from the core portion. The heat transfer is shielded.
  • the heat pump cycle 33 includes a refrigerant compressor 45, a three-way switching valve 46, an external condenser 47, a receiver 48, an expansion valve 49, and an evaporator 40 in order to form a cooling cycle, and the three-way switching valve 46 and the receiver 48.
  • the refrigerant / heat medium heat exchanger 1 functioning as a condenser (condenser) is connected in parallel with the external condenser 47 between the refrigerant compressor 45, the three-way switching valve 46, the refrigerant / heat medium heat exchanger 1, and the receiver.
  • the heat pump heating cycle can be configured by 48, the expansion valve 49, and the evaporator 40.
  • the cooling water circulation circuit 35 includes an engine or motor 50, a buffer tank 51, a radiator 52, a cooling water pump 53, and the like, and a bypass circuit 54 via the four-way switching valve 34 is connected to the cooling water circulation circuit 35. It is said that.
  • the external condenser 47 of the heat pump cycle 33 and the radiator 52 of the cooling water circulation circuit 35 are arranged in parallel, and can be ventilated through a common fan 55.
  • the refrigerant compressed by the refrigerant compressor 45 is circulated in the cooling cycle by the three-way switching valve 46 in the order of the external capacitor 47, the receiver 48, the expansion valve 49, and the evaporator 40.
  • the air blown by the blower 38 can be cooled for cooling.
  • the refrigerant compressed by the refrigerant compressor 45 is circulated through the heat pump heating cycle in the order of the refrigerant / heat medium heat exchanger 1, the receiver 48, the expansion valve 49, and the evaporator 40 by the three-way switching valve 46, and the refrigerant / heat medium heat is circulated.
  • the exchanger 1 is caused to function as a condenser, and the heat medium is heated by the high-temperature and high-pressure refrigerant gas. Then, the heat medium is circulated to the radiator 41 by the heat medium circulation circuit 32, so that the air passing through the evaporator 40 can be heated by the radiator 41 and used for heating or dehumidification.
  • the heat medium circulating in the heat medium circulation circuit 32 and the high-temperature and high-pressure refrigerant gas circulating in the heat pump cycle 33 are converted into a high-pressure, small, high-performance refrigerant / heat medium heat exchanger.
  • the heat exchanger 1 can directly exchange heat through the tube walls of the refrigerant flat tube 2 and the heat medium flat tube 3, heat the heat medium with a high-temperature and high-pressure refrigerant gas, and supply it to the radiator 41. Therefore, compared with an air conditioner that heats the heat medium supplied to the radiator 41 with a PTC heater or the like and uses it as a heat source for heating, the energy efficiency can be greatly improved, and the power consumption in the air conditioner 30 can be reduced. As a result, the cruising distance of the vehicle can be extended, and the HVAC unit 31 of the current system can be used as it is, thereby reducing development costs.
  • the refrigerant flat tube 2 In installing the refrigerant / heat medium heat exchanger (heat exchanger) 1 between the heat medium circulation circuit 32 and the heat pump cycle 33, the refrigerant flat tube 2, the heat medium flat tube 3 of the heat exchanger 1, Core portions such as the refrigerant side header tanks 6 and 7 and the heat medium side header tanks 8 and 9 or the integrated header tanks 21 and 22 are housed and installed in a case 44 having heat insulation properties. For this reason, the heat transfer from the core portion of the heat exchanger 1 to the ambient air can be shielded by the heat insulating casing 44. Therefore, heat loss can be reduced, and the heat medium can be efficiently heated or cooled by effectively using the heat of the refrigerant.
  • heat exchanger heat exchanger
  • this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably.
  • the present invention may be applied to a refrigerant / heat medium heat exchanger that exchanges heat between a low-pressure refrigerant and a heat medium and cools the heat medium.
  • Heat exchanger (refrigerant / heat medium heat exchanger) 2 Flat tube for refrigerant 3 Flat tube for heat medium 6, 7 Refrigerant side header tank 8, 9 Heat medium side header tank 12 Partition plates 21, 22 Integrated header tanks 23, 24 Partitions 25, 26 Refrigerant side header tank 27, 28 Heat medium side header tank 30 Vehicle air conditioner 31 HVAC unit 32 Heat medium circulation circuit 33 Heat pump cycle 40 Evaporator 41 Radiator 44 Insulating housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un échangeur de chaleur (1) compact, à haute performance et à excellente résistance à la pression qui est capable d'effectuer un échange de chaleur efficace entre un caloporteur et un réfrigérant à haute température et haute pression; l'invention concerne aussi un dispositif de climatisation de véhicule à faible consommation d'énergie qui peut effectuer le chauffage avec un caloporteur qui est chauffé par ledit échangeur de chaleur comme source de chaleur. Dans cet échangeur de chaleur servant à effectuer l'échange de chaleur entre un réfrigérant et un caloporteur, plusieurs tubes plats de réfrigérant (2) dans lesquels circule un réfrigérant et plusieurs tubes plats de caloporteur (3) dans lesquels circule un caloporteur sont stratifiés alternativement en plusieurs couches et collés ensemble, et une paire de réservoirs collecteurs côté réfrigérant (6, 7) et de réservoirs collecteurs côté caloporteur (8, 9) qui distribuent et recueillent respectivement le réfrigérant et le caloporteur sont présents aux deux extrémités des tubes plats de réfrigérant (2) et des tubes plats de caloporteur (3).
PCT/JP2013/061376 2012-05-09 2013-04-17 Echangeur de chaleur et dispositif de climatisation de véhicule WO2013168526A1 (fr)

Applications Claiming Priority (2)

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JP2012-107716 2012-05-09
JP2012107716A JP2013234801A (ja) 2012-05-09 2012-05-09 熱交換器および車両用空調装置

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WO2022057536A1 (fr) * 2020-09-17 2022-03-24 浙江盾安人工环境股份有限公司 Tube de collecte et échangeur de chaleur présentant ce dernier
CN114440694A (zh) * 2022-02-17 2022-05-06 上海加冷松芝汽车空调股份有限公司 一种集流管、换热器及空调
WO2022166236A1 (fr) * 2020-08-26 2022-08-11 广东美的暖通设备有限公司 Échangeur de chaleur, boîtier de commande électrique et système de climatisation
EP4134610A4 (fr) * 2020-08-26 2023-10-18 GD Midea Heating & Ventilating Equipment Co., Ltd. Échangeur de chaleur, boîtier de commande électrique et système de climatisation

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JP2016017737A (ja) * 2014-07-07 2016-02-01 現代自動車株式会社Ｈｙｕｎｄａｉｍｏｔｏｒ Ｃｏｍｐａｎｙ Ｔｅｄ熱交換器
US9919577B2 (en) 2014-11-14 2018-03-20 Hyundai Motor Company Air-conditioning device for vehicle
JP2017219297A (ja) * 2016-06-10 2017-12-14 サンデンホールディングス株式会社 車両用熱交換器
JP2018080857A (ja) * 2016-11-14 2018-05-24 サンデンホールディングス株式会社 熱交換器
US10955200B2 (en) * 2018-07-13 2021-03-23 General Electric Company Heat exchangers having a three-dimensional lattice structure with baffle cells and methods of forming baffles in a three-dimensional lattice structure of a heat exchanger
WO2020250972A1 (fr) * 2019-06-12 2020-12-17 パナソニック株式会社 Dispositif de stockage de chaleur
WO2020250970A1 (fr) * 2019-06-12 2020-12-17 パナソニック株式会社 Dispositif de stockage de chaleur

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JP2002243374A (ja) * 2001-02-14 2002-08-28 Mitsubishi Heavy Ind Ltd インタークーラ及びｃｏ２冷媒車両用空調装置
JP2005306300A (ja) * 2004-04-23 2005-11-04 Denso Corp 車両用空調装置
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WO2022166236A1 (fr) * 2020-08-26 2022-08-11 广东美的暖通设备有限公司 Échangeur de chaleur, boîtier de commande électrique et système de climatisation
EP4134610A4 (fr) * 2020-08-26 2023-10-18 GD Midea Heating & Ventilating Equipment Co., Ltd. Échangeur de chaleur, boîtier de commande électrique et système de climatisation
WO2022057536A1 (fr) * 2020-09-17 2022-03-24 浙江盾安人工环境股份有限公司 Tube de collecte et échangeur de chaleur présentant ce dernier
CN114440694A (zh) * 2022-02-17 2022-05-06 上海加冷松芝汽车空调股份有限公司 一种集流管、换热器及空调

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