WO2008062771A1 - Échangeur de chaleur du type à ailettes - Google Patents

Échangeur de chaleur du type à ailettes Download PDF

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Publication number
WO2008062771A1
WO2008062771A1 PCT/JP2007/072420 JP2007072420W WO2008062771A1 WO 2008062771 A1 WO2008062771 A1 WO 2008062771A1 JP 2007072420 W JP2007072420 W JP 2007072420W WO 2008062771 A1 WO2008062771 A1 WO 2008062771A1
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WO
WIPO (PCT)
Prior art keywords
tubes
heat exchanger
refrigerant
cross
air
Prior art date
Application number
PCT/JP2007/072420
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English (en)
Japanese (ja)
Inventor
Hiromune Matsuoka
Toshiyuki Kurihara
Yoshio Oritani
Shun Yoshioka
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2008062771A1 publication Critical patent/WO2008062771A1/fr

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Classifications

    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • 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
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure

Definitions

  • the present invention relates to a cross-fin type heat exchanger of an air conditioning room unit that performs a heating operation in which a refrigerant in a supercritical state flows and heats indoor air.
  • fluorocarbon fluorocarbon
  • carbon dioxide a technique using carbon dioxide as a refrigerant
  • water heaters products using carbon dioxide as a refrigerant are sold.
  • Patent Document 1 discloses a carbon dioxide refrigeration cycle.
  • this heat exchanger has a structure in which a plurality of refrigerant tubes (tubes) pass through a large number of fins 15 arranged so as to cross them. .
  • Patent Document 1 JP 2006-220356 A
  • Patent Document 2 Japanese Patent Laid-Open No. 10-132422
  • An object of the present invention is to pass and warm in a cross-fin type heat exchanger of an air-conditioning indoor unit using a refrigerant such as carbon dioxide, in which a supercritical refrigerant flows in a heating operation for heating a room. It is to suppress the temperature unevenness of the generated air.
  • a cross-fin type heat exchanger is a heat exchanger for an air conditioning indoor unit that performs a heating operation in which a supercritical refrigerant flows and heats indoor air, and includes an inlet header and a plurality of heat exchangers.
  • a tube, an outlet header, and a plurality of fins are provided.
  • the inlet header has an elongated shape, and allows high-temperature refrigerant flowing from the air-conditioning unit outside to flow in.
  • Each of the plurality of tubes has a cross-sectional area that is smaller than the cross-sectional area of the inlet header.
  • the outlet header is a header arranged to collect the low-temperature refrigerant after flowing into a plurality of tubes from the inlet header and exchanging heat with room air and returning it to the unit outside the air conditioning room.
  • Each of the plurality of fins penetrates a plurality of tubes and assists heat exchange between the refrigerant flowing in the tubes and the room air.
  • the plurality of tubes are arranged in a plurality of rows along a first direction through which room air passes, and in each of the plurality of rows along a second direction intersecting the first direction. Multiple tubes are lined up in multiple stages.
  • the difference between the refrigerant temperature in the vicinity of the inlet header and the refrigerant temperature in the vicinity of the outlet header of the tube is 40 ° C or higher in the heating operation.
  • the third direction which is the direction in which the tubes extend
  • the temperature of the room air after passing through the left half of the tubes and fins, and after passing through the right half of the tubes and fins is 10 ° C or less in heating operation.
  • the refrigerant temperature in the tube of the heat exchanger becomes 40 ° C or higher in the heating operation between the vicinity of the inlet header and the vicinity of the outlet header.
  • a plurality of tubes for flowing the refrigerant from the inlet header to the outlet header have a multi-row structure along the first direction through which room air passes, and the second direction intersects with the first direction.
  • a multi-stage structure is also formed by arranging a plurality of items along the line.
  • the temperature difference between the air passing through the right half of the tubes and fins of the heat exchanger and the air passing through the left half should be 10 ° C or less in heating operation.
  • the tube in the first row has a portion near the inlet header
  • the tube in the second row There is a portion near the outlet header
  • the third row of tubes has a portion near the inlet header
  • the fourth row of tubes has a portion near the outlet header.
  • the temperature difference between the air passing through the right half of the heat exchanger tubes and fins and the air passing through the left half can be reduced to 10 ° C or less in heating operation.
  • temperature unevenness of the passing air in each part of the heat exchanger as viewed in the first direction can be suppressed.
  • the arrangement such as the close arrangement of the hot and cold parts of the tube using a multi-stage structure it becomes possible to suppress further temperature variations in the indoor air!
  • a cross-fin type heat exchanger according to the second invention is the heat exchanger according to the first invention, and is for heating operation! /, And the average temperature of the refrigerant flowing in the left half of the tube and the tube The average temperature S of the refrigerant flowing in the right half is in the range of 40 ° C to 55 ° C.
  • a cross-fin type heat exchanger is the heat exchanger of the second aspect of the present invention, and is a blower for blowing indoor air after passing through the heat exchanger of the air conditioning indoor unit into the room.
  • the outlet has an elongated shape and is long in the direction in which the plurality of tubes extend.
  • the outlet force is elongated in the direction in which the tubes extend, and its elongated shape Force S, which is assumed to cause a temperature difference in the indoor air after passing through the heat exchanger between the one end side and the other end side of the shape S, because multiple tubes have a multi-row structure and a multi-stage structure.
  • the temperature difference of the air can be kept small.
  • a cross fin heat exchanger is the heat exchanger according to the first aspect of the present invention, wherein the inlet header includes a left inlet header portion and a right inlet header portion.
  • the left inlet header has an elongated shape, is disposed on the left side of the plurality of tubes, and has a cross-sectional area larger than the cross-sectional area of the tubes.
  • the right inlet header portion has an elongated shape, is disposed on the right side of the plurality of tubes, and has a cross-sectional area larger than the cross-sectional area of the tube.
  • the outlet header includes a left outlet header portion disposed on the left side of the plurality of tubes and a right outlet header portion disposed on the right side of the plurality of tubes.
  • the plurality of tubes are divided into a first tube group and a second tube group.
  • the first tube group allows the refrigerant to flow from the left inlet header to the right outlet header.
  • the second tube group allows the refrigerant to flow from the right inlet header to the left outlet header.
  • the amount of refrigerant flowing inside the first tube group and the amount of refrigerant flowing inside the second tube group are substantially the same during heating operation.
  • a configuration is adopted in which a plurality of tubes extend in the left-right direction, and a configuration in which each of the inlet header and the outlet header is divided into a right side and a left side.
  • the first tube group is configured to flow the refrigerant from the left inlet header portion to the right outlet header portion
  • the second tube group is configured to flow the refrigerant from the right inlet header portion to the left outlet header portion.
  • the amount of refrigerant flowing inside the first tube group and the amount of refrigerant flowing inside the second tube group are made to be approximately the same.
  • a cross-fin heat exchanger is the heat exchanger of the fourth aspect of the present invention,
  • the inlet header portion and the right inlet header portion have the same cross-sectional area.
  • the number of tubes belonging to the first tube group is equal to the number of tubes belonging to the second tube group! / ⁇
  • the amount of refrigerant flowing inside the first tube group The force S can make the amount of refrigerant flowing inside the second tube group more equal.
  • a cross-fin heat exchanger is the heat exchanger according to the fourth or fifth aspect of the present invention, comprising a tube belonging to the first tube group, a tube belonging to the second tube group, Are arranged alternately in the direction perpendicular to the left / right direction! /
  • each portion of the heat exchanger in the first direction view
  • the temperature difference of the passing air due to the difference in the direction perpendicular to the left and right direction is not limited by the temperature of the passing air due to the difference in temperature.
  • a cross fin heat exchanger is the heat exchanger according to any one of the first to third aspects, wherein the inlet header and the outlet header are on the same side with respect to the plurality of tubes. It is arranged in.
  • the heat exchanger further includes a folding member.
  • the folding member connects the ends of two tubes on the side where the inlet and outlet headers of multiple tubes are placed! /, Or on the opposite side.
  • the tube and the folded member are arranged at least at the inlet header and outlet header of the tube! /, On the opposite side of the tube! /, And are folded once to form a path! / Then, the refrigerant flows from the inlet header to the outlet header.
  • a cross-fin heat exchanger according to an eighth invention is the heat exchanger according to the seventh invention, wherein a plurality of folded member force tubes of at least the number of rows of the folded members are connected to each other. .
  • the inlet header and the outlet header arranged on the same side of the plurality of tubes can exchange the refrigerant by the path.
  • the first row of tubes and the second row of tubes are connected on the opposite side of the headers by the first folded member, and the second row of tubes Just by connecting the third row of tubes to the header on the same side as the two headers using the second folding member, the refrigerant that has flowed into the third row of tubes cannot be returned to the outlet header.
  • Both headers are separated by the third folding member so that the refrigerant that has flowed into the other tube can flow to the other third row of tubes and the other first and second rows of tubes by the third folding member.
  • the refrigerant can flow from the inlet header to the outlet header.
  • the cross fin type heat exchanger according to the first invention has a multi-row structure. For example, when a part of the heat exchanger in the first direction is extracted and viewed, 1 The tube in the row has a portion near the inlet header, the tube in the second row has a portion near the outlet header, the tube in the third row has a portion near the inlet header, and the tube in the fourth row has an outlet header. An arrangement in which there is a nearby part can be easily obtained, and temperature unevenness of the passing air in each part of the heat exchanger in the first direction can be suppressed.
  • the air temperature that passed through the right half of the heat exchanger tubes and fins although the refrigerant temperature in the heat exchanger tubes in the vicinity of the inlet header and in the vicinity of the outlet header is 40 ° C or higher in heating operation,
  • the temperature difference between the air and the air that has passed through the left half is 10 ° C or less during heating operation.
  • devices such as the close arrangement of the high-temperature and low-temperature portions of the tube using a multi-stage structure, it becomes possible to further suppress temperature unevenness in the room air.
  • the outlet force is long in the direction in which the plurality of tubes extend, and passes through the heat exchanger at one end and the other end of the elongated shape.
  • Shi Force S which is assumed to cause a temperature difference in the indoor air after the operation, and because the multiple tubes have a multi-row structure and a multi-stage structure, the temperature difference of the blown air can be kept small.
  • a relatively high temperature refrigerant flows inside the first tube group and a relatively low temperature refrigerant flows inside the second tube group in the left half of the heat exchanger.
  • the amount of refrigerant flowing inside the first tube group and the amount of refrigerant flowing inside the second tube group can be equalized. S can.
  • the passing air due to the difference in the direction orthogonal to the left-right direction is not just the temperature of the passing air due to the difference in the left-right direction.
  • the temperature difference can also be suppressed small.
  • the internal structure of the air-conditioning indoor unit is different from the case where the inlet header and the outlet header are distributed on both sides of the plurality of tubes. Compactness can be achieved.
  • the first row of tubes and the second row of tubes are connected to the opposite side of both headers by the first folded member, and the second row of tubes Just connecting the third row of tubes to the same side as the two headers with the second folding member cannot return the refrigerant that has flowed to the third row of tubes to the outlet header.
  • the refrigerant flowing into the third row of tubes is caused to flow to the other third row of tubes and the other first and second rows of tubes by the third folding member.
  • FIG. 1 A diagram showing a refrigeration cycle of an air conditioner in which a cross-fin heat exchanger according to an embodiment of the present invention is employed in an indoor unit.
  • A A top view of a cross-fin heat exchanger according to a second embodiment of the present invention.
  • B The front view of the cross fin type heat exchanger which concerns on 2nd Embodiment of this invention.
  • FIG. 1 Top view of a cross-fin heat exchanger according to a third embodiment of the present invention.
  • B The front view of the cross fin type heat exchanger which concerns on 3rd Embodiment of this invention.
  • C A side view of a cross fin heat exchanger according to a third embodiment of the present invention.
  • Fig. 1 shows a refrigeration cycle of an air conditioner in which a cross-fin heat exchanger according to an embodiment of the present invention is employed in an indoor unit.
  • the air conditioner 10 shown here uses carbon dioxide (hereinafter referred to as C02 refrigerant) as the refrigerant.
  • C02 refrigerant carbon dioxide
  • the air conditioner 10 is installed in a building such as a building and cools or heats a plurality of spaces.
  • a plurality of indoor units 50 are connected to one outdoor unit 20 1 It is a multi-type air conditioner that constitutes one closed refrigeration cycle.
  • the air conditioner 10 includes an outdoor unit 20, a plurality of indoor units 50, and refrigerant communication pipes 6 and 7 that connect both units 20 and 50.
  • the outdoor unit 20 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 24, closing valves 25 and 26, and the like. Come in.
  • Each of the indoor units 50 has an indoor expansion valve 51 and an indoor heat exchanger 52, and is installed on the ceiling of each space (such as a room) in the building, and is connected to the refrigerant communication pipe installed locally. Connected to outdoor unit 20 by 6,7. In this way, the outdoor unit 20 and the plurality of indoor units 50 carried into the building form one refrigeration cycle by on-site piping construction.
  • the refrigeration cycle of the air conditioner 10 includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 24, an indoor expansion valve 51, and an indoor heat exchanger.
  • 52 is a closed circuit connected by refrigerant pipes including refrigerant communication pipes 6 and 7.
  • the shut-off valves 25 and 26 are opened, and a C02 refrigerant is supplied from a cylinder (not shown) into the internal space of the indoor unit 50 and refrigerant communication pipes 6 and 7 (the space to be filled with refrigerant) Is discharged.
  • Refrigerant charging work has been completed, and the required amount of C02 refrigerant is contained in the refrigeration cycle.
  • the air conditioner 10 When the air conditioner 10 is filled, the air conditioner 10 performs air conditioning operation to cool and heat the space in the building by causing heat exchange between the CO 2 refrigerant flowing through the indoor heat exchanger 52 of the indoor unit 50 and the indoor air. It will be in a state where you can power.
  • the outdoor heat exchanger 23 serves as a gas cooler, and the indoor heat exchanger 52 serves as an evaporator.
  • the indoor heat exchanger 52 serves as a gas cooler, and the outdoor heat exchanger 23 serves as an evaporator.
  • FIG. 2 is a simplified diagram showing the pressure-enthalpy state of the C02 refrigerant, with the vertical axis representing pressure and the horizontal axis representing enthalpy.
  • Tcp is an isotherm passing through the critical point CP (critical temperature: about 31 ° C, critical pressure: about 7.3 MPa).
  • the critical pressure which is the pressure at the critical point CP
  • the C02 refrigerant is in a supercritical state, which is a fluid state that has both the diffusibility of gas and the solubility of liquid. become.
  • the air conditioner 10 is operated in a refrigeration cycle including a supercritical state, as indicated by a thick line in FIG.
  • an indoor heat exchanger 52 is arranged in the casing 30 along two long sides in a plan view of the casing 30.
  • Each of the indoor heat exchangers 52 extends straight from a position near the side plate 30d to a position near the side plate 30f.
  • the indoor heat exchanger 52 is connected to a refrigerant pipe for exchanging refrigerant with the refrigerant communication pipes 6 and 7, and passes through the side plate 30f of the casing 30 so as to penetrate the refrigerant.
  • a tube is in place.
  • the inlet headers 61 and 62 include a left inlet header portion 61 and a right inlet header portion 62.
  • the left inlet header portion 61 and the right inlet header portion 62 are respectively elongated and shaped to allow the hot C02 refrigerant flowing from the outdoor unit 20 to flow in.
  • the left inlet header 61 and the right inlet header 62 have substantially the same shape!
  • the outlet headers 65 and 66 are used for collecting the low-temperature C02 refrigerant after flowing from the inlet headers 61 and 62 into the plurality of tubes 63 and 64 and exchanging heat with the indoor air and returning the refrigerant to the outdoor unit 20.
  • the outlet headers 65 and 66 are disposed on the left side of the plurality of tubes 63 and 64, and the right outlet header portion 66 is disposed on the right side of the plurality of tubes 63 and 64. Consists of! /, Ru.
  • the cross-fin heat exchanger according to the first embodiment is used as the indoor heat exchanger 52, the vicinity of the inlet headers 61, 62 and the vicinity of the outlet headers 65, 66 are adjusted. Even if the difference in the refrigerant temperature in the tubes 63 and 64 becomes 40 ° C or higher in the heating operation, the temperature difference of the air blown out from each part of the outlet 32 becomes 10 ° C or less. That is, in the heat exchanger according to the first embodiment, the first passage through which the indoor air passes through the plurality of tubes 63 and 64 for flowing the C02 refrigerant to the inlet headers 61 and 62 and the outlet headers 65 and 66 is provided.
  • the heat exchanger shown in FIG. 7 includes an inlet header 71, a plurality of tubes 73a, 73b, 73c, an outlet header 75, and a plurality of fins 79.
  • the direction in which the plurality of tubes 73a, 73b, 73c extend is defined as the left-right direction.
  • the tubes 73a, 73b, 73c have a differential force between the temperature of the refrigerant in the vicinity of the inlet header 71 and the temperature of the refrigerant in the vicinity of the outlet header 75, and become 40 ° C or higher in the heating operation. Furthermore, the temperature of the room air after passing through the left half of the tubes 73a, 73b, 73c and the fin 79 (see symbol L in FIG. 7B) and the right half of the tubes 73a, 73b, 73c and the fin 79 The difference from the temperature of the room air after passing (see symbol R in Fig. 7 (B)) is 10 ° C or less in heating operation.
  • the inlet header 81 has an elongated shape, and the high-temperature C flowing from the outdoor unit 20 force. 2 Make the refrigerant flow.
  • the plurality of tubes 83a, 83b, 83c, 83d, 83e, and 83f each have a cross-sectional area that is smaller than the cross-sectional area (flow path area) of the inlet header 81.
  • the outlet header 85 collects the low-temperature refrigerant after flowing through the inlet header 81 force, multiple tubes, 83a, 83b, 83c, 83d, 83e, 83f and exchanging heat with room air. It is a header that is deployed to return to.
  • Each of the plurality of fins 89 penetrates the plurality of tubes 83a, 83b, 83c, 83d, 83e, and 83f and assists heat exchange between the C02 refrigerant flowing in the tubes and the room air.
  • Two U-shaped tubes 88b and 88d connect tubes in different rows and on the opposite side of both headers 81 and 85
  • the tubes P in the same row are connected by three U-shaped tubes 88a, 88c, 88e, and paths P21, P22, P23 are connected so that the C02 refrigerant can flow between the inlet header 81 and the outlet header 85 on the same side.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

L'invention vise à limiter les fluctuations de température de l'air traversant un échangeur de chaleur en utilisant un échangeur de chaleur du type à ailettes, un réfrigérant à l'état supercritique circulant à l'intérieur pendant un fonctionnement en chauffage afin de chauffer l'intérieur d'une pièce. L'échangeur de chaleur dans lequel circule du réfrigérant CO2 à l'état supercritique est pourvu de collecteurs (61, 62) d'entrée minces et allongés, d'une pluralité de tubes (63, 64) présentant une aire en section droite inférieure à celle des collecteurs (61, 62) d'entrée, de collecteurs (65, 66) de sortie et d'une pluralité d'ailettes (69). Les tubes (63, 64) sont disposés en une pluralité de rangées dans une direction de traversée de l'air et chaque rangée est composée de tubes à une pluralité de niveaux. Une différence de température entre le réfrigérant au voisinage des collecteurs (61, 62) d'entrée et celui se trouvant au voisinage des collecteurs (65, 66) de sortie est supérieure ou égale à 40°C pendant le fonctionnement en chauffage. Une différence de température entre l'air traversant la moitié gauche de l'échangeur de chaleur et celui traversant la moitié droite de l'échangeur de chaleur est inférieure ou égale à 10°C.
PCT/JP2007/072420 2006-11-22 2007-11-20 Échangeur de chaleur du type à ailettes WO2008062771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-316206 2006-11-22
JP2006316206A JP2008128601A (ja) 2006-11-22 2006-11-22 クロスフィン式の熱交換器

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WO2008062771A1 true WO2008062771A1 (fr) 2008-05-29

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EP3141857A1 (fr) * 2015-08-13 2017-03-15 Mitsubishi Heavy Industries, Ltd. Radiateur et cycle frigorifique à pression supercritique l'utilisant

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Publication number Priority date Publication date Assignee Title
JPH07324843A (ja) * 1994-05-30 1995-12-12 Sanyo Electric Co Ltd 熱交換器
JPH08110064A (ja) * 1994-10-07 1996-04-30 Hitachi Air Conditioning & Refrig Co Ltd 空気調和機の熱交換コイル
JPH08114333A (ja) * 1994-10-14 1996-05-07 Shinko Kogyo Co Ltd 空気調和機用熱交換器
JP2004003810A (ja) * 2002-04-03 2004-01-08 Denso Corp 熱交換器
JP2004257690A (ja) * 2003-02-27 2004-09-16 Mitsubishi Electric Corp 空気調和装置
JP2006002962A (ja) * 2004-06-15 2006-01-05 Calsonic Kansei Corp 熱交換器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141857A1 (fr) * 2015-08-13 2017-03-15 Mitsubishi Heavy Industries, Ltd. Radiateur et cycle frigorifique à pression supercritique l'utilisant

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