US20180231320A1 - Heat exchanger and vehicle air-conditioning system - Google Patents

Heat exchanger and vehicle air-conditioning system Download PDF

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Publication number
US20180231320A1
US20180231320A1 US15/750,395 US201615750395A US2018231320A1 US 20180231320 A1 US20180231320 A1 US 20180231320A1 US 201615750395 A US201615750395 A US 201615750395A US 2018231320 A1 US2018231320 A1 US 2018231320A1
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US
United States
Prior art keywords
tubes
coolant
heat exchanger
exchanger according
passes
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.)
Abandoned
Application number
US15/750,395
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English (en)
Inventor
Rainer Paduch
Roland Haussmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Klimasysteme GmbH
Original Assignee
Valeo Klimasysteme GmbH
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 Valeo Klimasysteme GmbH filed Critical Valeo Klimasysteme GmbH
Assigned to VALEO KLIMASYSTEME GMBH reassignment VALEO KLIMASYSTEME GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAUSSMANN, ROLAND, PADUCH, Rainer
Publication of US20180231320A1 publication Critical patent/US20180231320A1/en
Abandoned legal-status Critical Current

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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
    • F28D1/053—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
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/08—Assemblies of conduits having different features

Definitions

  • the invention concerns a heat exchanger for vehicle air-conditioning systems, with which in particular air is cooled by means of an evaporating coolant, wherein to increase the efficiency, the design of the heat exchanger takes into account the fact that the reduction in density of the coolant on evaporation leads to a reduction in the further heat absorption capacity. This is achieved in that the flat tubes form assemblies with different cross-section areas of the individual tubes for the coolant flow.
  • heat exchanger is used synonymously with “evaporator” or “vaporiser”.
  • the invention furthermore concerns a vehicle air-conditioning system.
  • Air-conditioning systems in particular for vehicles, are normally equipped with heat exchangers in which a coolant, cooled and liquefied by pressure reduction, evaporates in thin pipes, whereby it extracts heat from the air passing over the pipes containing the coolant and thus lowers the temperature of the air.
  • Heat exchangers for air-conditioning systems in vehicles must fulfil a number of requirements. In particular, they must be able to transfer up to 9 kW heating power within a short time; they must be as small as possible so that they can be arranged below the dashboard of the vehicle; the coolant flow may be up to 10 kg/min; and for the air route, the pressure fall should be as low as possible. Also, splash water protection is necessary because splash water, which occurs in particular as condensation water on the evaporator, can be transferred to the heater, where it evaporates and later condenses on the (relatively) cold windscreen, misting this up. The condensation water from the air to be cooled must therefore be securely discharged, and must not even temporarily enter the passenger compartment via the air-conditioning system.
  • US 2007/0215331 A1 discloses a heat exchanger in which the coolant is guided, falling and rising, in parallel flat tubes of the same design, wherein in the falling channels at the back, the coolant first meets the (already cooled) outlet air and only finally, in the rising channels at the front, meets the (warmer) inlet air (contra-flow process).
  • the coolant loses heat absorption capacity on its route through the heat exchanger because of its reduction in density, is not taken into account.
  • DE 195 15 526 C1 discloses a heat exchanger which cools air in a total of six passes in the contra-flow process. These passes consist of a number of flat tubes of uniform design. The density-dependency of the heat absorption capacity of the coolant is taken into account here in that, in the successive passes, the number of groups of flat tubes forming the passes rises monotonously from two to five, and thus the total cross-section of the coolant flow is increased in steps, wherein the flow speed of the coolant is reduced accordingly (progressive circuiting).
  • the disadvantage here is that, in operation with a higher pressure fall or on superheating, at the coolant outlet a smaller temperature difference from the inlet air temperature can exist in contra-flow systems than in co-flow operation.
  • the invention starts from this prior art and its object is to provide an additional parameter, which can be influenced for optimizing the heat exchanger and which can be used to slow down the coolant flow in the outlet region, in order thus to increase the achievable temperature difference and hence the effectiveness of the heat exchanger while retaining the same external dimensions.
  • the heat exchanger has a coolant inlet and a coolant outlet, with parallel-guided flat tubes which are intended to conduct a coolant which evaporates. Fins are arranged between the tubes which form air guide slots in the direction perpendicular to the course of the tubes and thus define the flow direction of air flowing through.
  • the tubes form at least two assemblies through which coolant flows successively and which are arranged behind each other in the air flow direction, and these assemblies differ in the size of the inner cross-section area of the respective tubes of the assemblies.
  • the tubes adjacent to the coolant inlet have a larger cross-section area than the tubes adjacent to the coolant outlet.
  • an additional parameter is provided, namely the variation in inner free cross-section area of the tubes.
  • the further knowledge is used that a division into two or a few different tube types is sufficient for practical purposes.
  • the enlargement of the tube cross-section with increasing flow length can be adapted much more precisely to the lower density of the coolant than a stepped increase in the number of identical tubes as in the prior art.
  • Embodiments of the invention utilize this optimisation parameter to take into account, more precisely than in the prior art, the fact that during the passage of the coolant through the heat exchanger, the reducing density of the coolant on evaporation leads to a reduction in the further heat absorption capacity.
  • the heat exchanger has a lower and an upper collector which each consist of a base part and a cover.
  • the coolant inlet of the heat exchanger is arranged on one of the collectors, and the coolant outlet on the same or on the other collector.
  • the ends of the flat tubes are welded into openings in these collectors.
  • Each of the two collectors forms either just one region or several regions separated from each other by partition walls, such that the tubes form at least two passes through which coolant flows successively, wherein at least some of the passes differ in the cross-section of the tubes and in some cases also in the number of tubes through which coolant flows.
  • the sum of the individual cross-sections of the tubes is greater than in the pass which starts at the coolant inlet.
  • this optimisation not only leads to better cooling of the through-flowing air, but because of the reduced pressure drop, also to a lower dew point and hence to better drying of the air.
  • the cross-section area of the tubes of the second assembly should be 1.1 to 2.5 times, and in particular 1.2 to 1.6 times, the cross-section area of the tubes of the first assembly.
  • the number of tubes of the assemblies arranged behind each other in the flow direction may differ, and hence the area of the fins assigned to the flow.
  • the active fin area may be optimised independently of the flow cross-section of the coolant.
  • all constituents of the heat exchanger are welded economically in a single work process.
  • the heat exchanger consists of precisely two passes, wherein the first pass has tubes with a smaller cross-section area and the second pass has tubes with a larger cross-section area, and wherein the tubes of each pass are formed by an assembly with tubes which have a mutually uniform cross-section.
  • the coolant flow may be optimised further if the tubes form more than two passes through which coolant flows successively.
  • the flow cross-sections of the passes calculated as the product of the number of tubes which contribute to the pass and the cross-section area of one of the identical tubes of this pass, form a monotonously rising sequence in the coolant flow direction.
  • Another aspect of the invention concerns the production of a plurality of heat exchangers with different nominal power. This can be optimised in that an assembly of tubes in a heat exchanger of higher performance is used as an assembly with smaller cross-section area, and the same assembly in a heat exchanger of lower performance is used as an assembly with larger cross-section area.
  • the heat exchanger may be optimised in that the exchange of heat between the coolant and air flows takes place in co-flow, and therefore on installation the side of the heat exchanger facing the coolant inlet is facing the air inlet. If optimisation however takes place for contra-flow, on installation the side of the heat exchanger facing the coolant inlet is facing the air outlet.
  • the increased efficiency of the heat exchanger according to the invention in comparison with the prior art contributes in particular to fulfilling the particularly high requirements for use in air-conditioning systems in vehicles.
  • FIG. 1 a perspective view of an embodiment of a heat exchanger according to the invention
  • FIG. 2 a cross-section through a first embodiment of the invention with two passes
  • FIG. 3 an enlargement of an extract from FIG. 2 showing the different cross-sections of the tubes
  • FIG. 4 a four-pass embodiment of the invention in cross-section
  • FIG. 5 another four-pass embodiment of the invention in cross-section.
  • FIG. 6 a cross-section through an upper collector of the heat exchanger according to FIG. 5 .
  • FIGS. 1 to 3 show a first embodiment of a heat exchanger according to the invention for an evaporator of an air-conditioning system of a vehicle.
  • the heat exchanger has a plurality of parallel-guided flat tubes 1 —arranged vertically in FIG. 1 —which are intended to conduct coolant which evaporates.
  • Fins 2 are welded between adjacent tubes and form air guide slots in the direction perpendicular to the course of the tubes 1 , which in FIG. 1 run from the rear left to the front right.
  • the air flows in this direction as indicated by the arrow 3 , wherein however it is primarily the structure of the heat exchanger which determines whether the air flow is oriented in conformity with the layout of the heat exchanger, i.e. as shown in FIG. 1 in co-flow, or in contra-flow to the coolant flow.
  • Collectors 4 and 5 are arranged at the top and bottom of the heat exchanger and have openings (not shown in FIG. 1 ) in which the ends of the tubes 1 are welded, wherein each of the two collectors may form several regions separated from each other by partition walls (also not shown in the figure), such that the tubes form at least two passes through which coolant flows successively.
  • the collectors 4 , 5 each comprise a trough-like base part and a cover closing the respective chamber.
  • the upper collector 4 in FIG. 1 is divided by a single partition wall into a rear region for the coolant flowing in via an inlet 8 , and a front region for the coolant flowing out via an outlet 9 , while the lower collector 5 , as a connecting chamber of the passes, requires no partition walls.
  • two passes are formed through which coolant flows successively, namely in FIG. 1 a rear pass in a first assembly 11 with flow direction from top to bottom, and a front pass in a second assembly 12 with flow direction from bottom to top.
  • the chambers 7 of the collectors 4 and 5 always contain firstly the openings of tubes from which coolant flows into the chambers, and secondly further inlets of tubes into which coolant flows, wherein these tubes not only include some of the flat tubes 1 but in some cases also the inlet 8 or outlet 9 of the coolant.
  • FIG. 2 shows a cross-section of the heat exchanger in FIG. 1 .
  • the tubes 1 which run perpendicular to the drawing plane, form two assemblies 11 and 12 which are arranged behind each other in the air flow direction 3 , namely a smaller assembly 11 at the top and a larger one at the bottom.
  • the size of the assemblies is determined by the number of tubes 1 lying in the flow direction 3 and forming the units 15 .
  • FIG. 2 there are eight tubes each forming a unit 15 in the first smaller assembly 11 (first in the flow direction), and eleven units 15 in the second larger assembly 12 (second in the flow direction) (see also FIG. 3 ).
  • FIG. 3 shows an extract enlargement of FIG. 2 which clarifies this further. Only here is it evident that the assemblies 11 and 12 consist of tubes 1 a, 1 b of different inner cross-section area.
  • the assembly to which the coolant outlet 9 of the heat exchanger leads uses coolant tubes 1 a which each have a larger cross-section area W 1 than those of the assembly 12 adjacent to the coolant inlet 8 (tubes 1 b; cross-section area W 2 ).
  • the difference in cross-section is only slight.
  • the preferred ratio of cross-section areas W 2 /W 1 of the tubes of assemblies 12 and 11 is 1.1 to 2.5, and in particular 1.2 to 1.6.
  • a cross-section value for the tubes can be selected which lies between those of its neighbouring assemblies.
  • the width of the tubes 1 a, 1 b is the same.
  • the first and last tubes 1 a, 1 b of each unit 15 are slightly rounded on the outside.
  • the other tubes 1 a, 1 b of each unit 15 have identical inner cross-section areas W 1 or W 2 .
  • the co-flow process indicated by the arrow 3 is optimised, because on average over the entire heat exchanger, greater temperature differences occur between coolant and air than with contra-flow processes. Whether contra-flow or co-flow is preferred in other configurations must be examined afresh in each case.
  • FIG. 4 shows an embodiment of the invention with four passes P 1 , P 2 , P 3 and P 4 .
  • P 1 and P 2 have tubes of smaller cross-section area
  • P 3 and P 4 have tubes of larger cross-section area.
  • This embodiment is particularly suitable for superheated operation.
  • the coolant flows through four tubes, two times 1 a and two times 1 b.
  • the optimisation shows that the contra-flow process is preferred, here indicated by arrow 3 from below.
  • the features explained in connection with FIGS. 2 and 3 apply, for example the cross-section ratios and the tube widths.
  • FIG. 5 shows a further embodiment of the invention with four passes P 1 to P 4 with successive flows, wherein P 1 , P 2 and P 3 lie next to each other transversely to the flow direction 3 and are as a whole fully covered by P 4 in the flow direction.
  • the first pass P 1 contains eight units 15 of tubes lying next to each other, the second pass P 2 has eleven units 15 of tubes, and the third pass P 3 has fifteen units 15 of tubes.
  • the fourth pass P 4 utilizes the entire region 12 with nine tubes per unit 15 , and there all 34 adjacent units 15 have tubes with the larger cross-section W 2 of the tubes used.
  • the total cross-section areas of the passes are therefore is follows:
  • the invention thus allows implementation of the knowledge that on passage through an evaporator, the gas proportion in the coolant increases and its density reduces for a constant pressure.
  • the heat absorption capacity of the coolant is however proportional to the density, so that for a constant and effective heat transmission, an increasing volume and therefore an increasing cross-section of the coolant flow is required.
  • this is achieved by means of additional channels, which however increases the dimensions of the heat exchanger by the space required for these additional channels.
  • this additional space can at least partly be saved in that due to the increased tube cross-section, only additional tube volume is provided but not additional tube length and fins fitted.
  • Heat exchangers of the same power can thus be constructed smaller, or they work more effectively for the same size.
  • the increased heat transmission at the coolant outlet in particular with slight superheating, means that cooling may be more effective in co-flow than in contra-flow.
  • FIG. 6 shows an upper collector 4 of FIG. 5 , the interior of which is divided by partition walls 6 into chambers 7 in order to divide the coolant flow into an increasing number in the flow direction.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (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)
US15/750,395 2015-08-05 2016-07-22 Heat exchanger and vehicle air-conditioning system Abandoned US20180231320A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015112833.0A DE102015112833A1 (de) 2015-08-05 2015-08-05 Wärmetauscher sowie Fahrzeugklimaanlage
DE102015112833.0 2015-08-05
PCT/EP2016/067573 WO2017021180A1 (en) 2015-08-05 2016-07-22 Heat exchanger and vehicle air-conditioning system

Publications (1)

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US20180231320A1 true US20180231320A1 (en) 2018-08-16

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US15/750,395 Abandoned US20180231320A1 (en) 2015-08-05 2016-07-22 Heat exchanger and vehicle air-conditioning system

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US (1) US20180231320A1 (ja)
EP (1) EP3332204B1 (ja)
JP (1) JP2018526605A (ja)
CN (1) CN108027215A (ja)
DE (1) DE102015112833A1 (ja)
WO (1) WO2017021180A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4328534A4 (en) * 2021-04-20 2024-06-05 Mitsubishi Electric Corporation HEAT EXCHANGER

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018209775A1 (de) * 2018-06-18 2019-12-19 Mahle International Gmbh Sammler für einen Wärmetauscher

Citations (9)

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US5163507A (en) * 1992-04-06 1992-11-17 General Motors Corporation Tank partition design for integral radiator/condenser
US6161616A (en) * 1997-05-07 2000-12-19 Valeo Kilmatechnik Gmbh & Co., Kg Hard-soldered flat tube evaporator with a dual flow and one row in the air flow direction for a motor vehicle air conditioning system
US20020020521A1 (en) * 2000-06-25 2002-02-21 Ryoichi Hoshino Evaporator
US20020066554A1 (en) * 2000-12-01 2002-06-06 Oh Sai Kee Tube plate structure of micro-multi channel heat exchanger
US7080683B2 (en) * 2004-06-14 2006-07-25 Delphi Technologies, Inc. Flat tube evaporator with enhanced refrigerant flow passages
US7222501B2 (en) * 2002-12-31 2007-05-29 Modine Korea, Llc Evaporator
US20090223656A1 (en) * 2005-06-06 2009-09-10 Jinichi Hiyama Heat exchanger tube
US8234881B2 (en) * 2008-08-28 2012-08-07 Johnson Controls Technology Company Multichannel heat exchanger with dissimilar flow
US20150096311A1 (en) * 2012-05-18 2015-04-09 Modine Manufacturing Company Heat exchanger, and method for transferring heat

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US4829780A (en) 1988-01-28 1989-05-16 Modine Manufacturing Company Evaporator with improved condensate collection
DE19515526C1 (de) 1995-04-27 1996-05-23 Thermal Werke Beteiligungen Gm Flachrohrwärmetauscher mit mindestens zwei Fluten für Kraftfahrzeuge
JP2003222436A (ja) * 2002-01-29 2003-08-08 Toyo Radiator Co Ltd ヒートポンプ型空調用熱交換器
JP2003294338A (ja) * 2002-03-29 2003-10-15 Japan Climate Systems Corp 熱交換器
JP2004163036A (ja) * 2002-11-14 2004-06-10 Japan Climate Systems Corp 複列型熱交換器
JP4667077B2 (ja) 2004-03-09 2011-04-06 昭和電工株式会社 ジョイントプレート半製品、ジョイントプレート、ジョイントプレートの製造方法および熱交換器
JP5998854B2 (ja) * 2012-10-31 2016-09-28 株式会社デンソー 冷媒蒸発器
JP2014219175A (ja) * 2013-05-10 2014-11-20 株式会社デンソー 冷媒蒸発器
KR102148724B1 (ko) * 2013-10-21 2020-08-27 삼성전자주식회사 열교환기 및 이를 갖는 공기조화기

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163507A (en) * 1992-04-06 1992-11-17 General Motors Corporation Tank partition design for integral radiator/condenser
US6161616A (en) * 1997-05-07 2000-12-19 Valeo Kilmatechnik Gmbh & Co., Kg Hard-soldered flat tube evaporator with a dual flow and one row in the air flow direction for a motor vehicle air conditioning system
US20020020521A1 (en) * 2000-06-25 2002-02-21 Ryoichi Hoshino Evaporator
US20020066554A1 (en) * 2000-12-01 2002-06-06 Oh Sai Kee Tube plate structure of micro-multi channel heat exchanger
US7222501B2 (en) * 2002-12-31 2007-05-29 Modine Korea, Llc Evaporator
US7080683B2 (en) * 2004-06-14 2006-07-25 Delphi Technologies, Inc. Flat tube evaporator with enhanced refrigerant flow passages
US20090223656A1 (en) * 2005-06-06 2009-09-10 Jinichi Hiyama Heat exchanger tube
US8234881B2 (en) * 2008-08-28 2012-08-07 Johnson Controls Technology Company Multichannel heat exchanger with dissimilar flow
US20150096311A1 (en) * 2012-05-18 2015-04-09 Modine Manufacturing Company Heat exchanger, and method for transferring heat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4328534A4 (en) * 2021-04-20 2024-06-05 Mitsubishi Electric Corporation HEAT EXCHANGER

Also Published As

Publication number Publication date
EP3332204B1 (en) 2019-08-07
EP3332204A1 (en) 2018-06-13
CN108027215A (zh) 2018-05-11
WO2017021180A1 (en) 2017-02-09
DE102015112833A1 (de) 2017-02-09
JP2018526605A (ja) 2018-09-13

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