EP2372283A1 - Wärmetauscher mit Verteilerplatte - Google Patents

Wärmetauscher mit Verteilerplatte Download PDF

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Publication number
EP2372283A1
EP2372283A1 EP10157289A EP10157289A EP2372283A1 EP 2372283 A1 EP2372283 A1 EP 2372283A1 EP 10157289 A EP10157289 A EP 10157289A EP 10157289 A EP10157289 A EP 10157289A EP 2372283 A1 EP2372283 A1 EP 2372283A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate
manifold
distribution
tubes
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.)
Granted
Application number
EP10157289A
Other languages
English (en)
French (fr)
Other versions
EP2372283B1 (de
Inventor
Philippe Biver
Mohamed Idris
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP10157289.9A priority Critical patent/EP2372283B1/de
Publication of EP2372283A1 publication Critical patent/EP2372283A1/de
Application granted granted Critical
Publication of EP2372283B1 publication Critical patent/EP2372283B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow channels
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates

Definitions

  • the present invention relates generally to heat exchangers for motor vehicles.
  • the present invention relates more particularly to a heat exchanger such as an evaporator comprising a collector box and at least one longitudinal row of heat exchange tubes through which a first fluid such as a refrigerant fluid can flow and around which a second fluid such as air can flow, said tubes being connected to the bottom face of the collector box, said collector box being connected to a first fluid source through a connection device and being made up of stacked plates including a distribution plate comprising at least one row of distribution slots for distribution of the first fluid into the tubes.
  • a heat exchanger such as an evaporator comprising a collector box and at least one longitudinal row of heat exchange tubes through which a first fluid such as a refrigerant fluid can flow and around which a second fluid such as air can flow
  • said tubes being connected to the bottom face of the collector box
  • said collector box being connected to a first fluid source through a connection device and being made up of stacked plates including a distribution plate comprising at least one row of distribution slots for distribution of the first fluid into the tubes.
  • Such a heat exchanger is particularly adapted to multi layers collector box assemblies for two phases flow products with high pressure withstanding, wherein the heat exchanger comprises two rows of tubes and wherein the collector box comprises an inlet and an outlet manifold connected accordingly to the tubes and to the connection device which has corresponding inlet and outlet ports.
  • a heat exchanger is disclosed for example in WO2009/124858 .
  • An object of the invention is to solve the above mentioned problems.
  • a heat exchanger of the above mentioned type characterized in that the collector box further comprises a manifold plate comprising a main longitudinal portion essentially flat having at least one longitudinal recessed portion forming a manifold channel which is in communication with the distribution slots of the distribution plate downwardly and with the connection device.
  • the refrigerant distribution is improved. More particularly, the refrigerant pressure and the dry-out due to high mass velocity is decreased.
  • the manifold plate according to the invention is particularly easy to manufacture and to assemble with the other plates. It is easy to design the manifold channel and to define different cross sections for the manifold channel depending for example on the longitudinal location of the section with regards to the connection device.
  • the compactness of the heat exchanger can be improved and the heat exchange surface can be increased with regards to the overall volume of the heat exchanger.
  • the heat exchanger according to the invention can be easily adapted to different types of refrigerant fluid.
  • the present invention also proposes a method of manufacturing such a heat exchanger, characterized in that it comprises the steps of:
  • the method further comprises the step of tightly fitting the cover plate to the upper face of the manifold plate.
  • Figures 1 to 4 show an evaporator 10 for a motor vehicle air-conditioning system which is operated preferably with high pressure refrigerant.
  • the refrigerant may be for example CO2 (R744 type) with an inlet pressure of approximately 30 bars.
  • This evaporator 10 is designed as a two rows flat-tube evaporator and has a multiplicity of flat tubes 12 arranged along two longitudinal rows R1, R2, a front row R1 on the front side of the evaporator 10 and a rear row R2 on the rear side of the evaporator 10.
  • These flat tubes 12 can be designed as extruded multichannel flat tubes, which have a multiplicity of flow passages. All the flat tubes 12 have the same length along a vertical axis V and the same depth along a transverse axis T.
  • the flat tubes 12 are multiport extruded flat tubes.
  • corrugated fins 16 which are acted on by ambient air in the direction of the arrow F, i.e. along a transverse axis.
  • the tubes 12 are fitted between an upper end member constituted of a collector box 18 and a lower end member constituted of a diverter box 20.
  • the collector box 18 comprises a stack of individual plates bearing against one another and including successively, downwardly speaking when looking at figures 1 to 4 , a cover plate 22 at the top, a manifold plate 23, an intermediate plate 24, a distribution plate 25, and a header plate 26 at the bottom.
  • a cover plate 22 at the top a manifold plate 22 at the top
  • a manifold plate 23 a manifold plate 23
  • an intermediate plate 24 a distribution plate 25
  • a header plate 26 at the bottom.
  • all the plates 22, 23, 24, 25, 26 are extruded.
  • the header plate 26, in which a front row and a rear row of mounting slots 32 are arranged, is illustrated above the flat tubes 12, the two parallel rows of mounting slots 32 corresponding to the two rows R1, R2 of flat tubes 12.
  • the mounting slots 32 are located one behind the other in the transverse direction and in each case leave between them webs 34 which separate two adjacent flat tubes 12 in the transverse direction.
  • the total number of mounting slots 32 matches with the total number of flat tubes 12, each flat tube upper end 33 being inserted into the header plate 26 through a mounting slot 32.
  • the distribution plate 25, or diverter plate, is arranged above the header plate 26 and has distribution slots 36 for refrigerant passage arranged along the two rows R1, R2.
  • each distribution slot 36 has a substantially "H-shape" orientated transversally and allowing one distribution slot 36 to distribute the refrigerant into two longitudinally adjacent mounting slots 32 below the distribution plate 25, as illustrated by figure 3 .
  • the intermediate plate 24 is arranged above the distribution plate 25 and has intermediate holes 38 for refrigerant passage arranged along a front row axis A1 and a rear row axis A2 respectively.
  • Each intermediate hole 38 is facing downwardly the central portion of an associated H-shape distribution slot 36 such that the refrigerant flowing into an intermediate hole 38, from the manifold plate 23, is distributed into the two legs of the associated H-shape distribution slot 36, each leg corresponding to an associated mounting slot 32 of the header plate 26.
  • the intermediate plate 24 also includes at its left longitudinal end, considering figures 2 to 4 , an inlet and outlet connecting slots 40, 42 for the connection of the manifold plate 23 to inlet and outlet ports 44, 46.
  • the inlet and outlet connecting slots 40, 42 are aligned with the intermediate holes 38 along the front row and rear row axes A1, A2 respectively.
  • a connecting device constituted of a fitting block 48 is provided with the inlet and outlet ports 44, 46, and is fitted to the connecting slots 40, 42, bearing against the intermediate plate lower face 50.
  • the intermediate plate 24 is provided at its side edges with parallel lateral flanges 52, 54 extending along the longitudinal edges of the other plates 22, 23, 25, 26.
  • Each lateral flange 52, 54 comprise an upper portion 56, 58 which is crimped over the upper plates 22, 23 and a lower portion 60, 62 which is crimped over the lower plates 25, 26, in order to clinch all the plates of the collector box 18 together before brazing them together.
  • the fitting block 48 is clinched with the lower plates 25, 26 thanks to the corresponding portions of the flanges 52, 54.
  • step portions 64, 66 extend along the upper portion 56, 58 of each of the lateral flanges 52, 54. Said step portions 64, 66 delimit transversally a complementary longitudinal housing for the manifold plate 23 and define a supporting surface 68, 70 for the cover plate 22.
  • the manifold plate 23 is aimed at:
  • the manifold plate 23 comprises a main longitudinal portion essentially flat having at least one longitudinal recessed portion 72, 74, 76, 78 forming a manifold channel which is in communication with the distribution slots 36 of the distribution plate 25 downwardly and with the connection device 48.
  • the manifold plate 23 has a first and second inlet manifold channels 72, 74 which are connected to the inlet port 44, through the corresponding connecting slot 40 of the intermediate plate 24, and which are connected to the front row R1 of intermediate holes 38 in order to transfer and distribute the inlet flow IF from the inlet port 44 to the tubes 12 of the front row R1.
  • Each intermediate hole 38 of the intermediate plate 24 connects the corresponding manifold channel 72, 74 to a corresponding distribution slot 36 of the distribution plate 25.
  • the first inlet manifold channel 72 is constituted of a cut-out portion having a main longitudinal portion, or longitudinal notch 80, which extends along the front longitudinal edge of the manifold plate 23, and having auxiliary portions, or auxiliary slits 82, which are connected transversally to the longitudinal notch 80.
  • the end portion 84 of the auxiliary slits 82 are substantially aligned along the front row axis A1 of intermediate holes 36 so as to place in communication the intermediate holes 38 with the longitudinal notch 80 through the auxiliary slits 82.
  • the intermediate holes 36 are represented with dashed lines.
  • auxiliary slits 82 of the preferred embodiment are arranged by pairs so as to have two auxiliary slits 82 connected to the longitudinal notch 80 through a common junction 86.
  • first inlet manifold channel 72 is delimited transversely by the longitudinal front edge of the manifold plate 23, on one side, and by the front step portion 64 of the intermediate plate 24, on the other side.
  • the first inlet manifold channel 72 is tightly closed upwardly by the cover plate 22, said cover plate 22 being designed to cover the entire upper surface 88 of the manifold plate 23.
  • the cover plate 22 is entirely flat.
  • the first inlet manifold channel 72 could be delimited transversely, on the other side, by a corresponding flange portion of the cover plate 22.
  • the second inlet manifold channel 74 is constituted of a slit portion which is opened in the upper and lower faces of the manifold plate 23, the maximum thickness of the slit portion corresponding to the thickness of the manifold plate 23.
  • Said slit portion has a main longitudinal portion, or longitudinal slit 90, which extends in parallel to the longitudinal notch 80, and has auxiliary slits 82 similar to the auxiliary slits 82 of the first inlet manifold channel 74.
  • said auxiliary slits 82 are connected transversally to the longitudinal slit 90.
  • the end portions 84 of the auxiliary slits 82 of the second inlet manifold channel 74 are substantially aligned along the front row axis A1 so as to place in communication the intermediate holes 38 with the longitudinal slit 90 through the auxiliary slits 82. Additionally, one could note that the end portions 84 of the auxiliary slits 82 of both inlet manifold channels 72, 74 are aligned along the same front row axis A1.
  • the slits 90, 82 of the second inlet manifold channel 74 are also tightly closed upwardly by the cover plate 22.
  • the manifold plate 23 has a first and second outlet manifold channels 76, 78 which are connected to the outlet port 46, through the corresponding connecting slot 42 of the intermediate plate 24, and which are connected to the rear row R2 of intermediate holes 38 in order to collect and transfer the outlet flow OF from the tubes 12 of the rear row R2 to the outlet port 46.
  • the outlet manifold channels 76, 78 are substantially similar to the inlet manifold channels 76, 78, the first outlet manifold channel 76 being made of a longitudinal slit 92 connected to auxiliary slits 94, while the second outlet manifold channel 78 is made of a longitudinal notch 96 connected to auxiliary slits 94.
  • the auxiliary slits 94 differ from the ones mentioned with the inlet manifold channels 72, 74 by the fact that they are not arranged by pairs but are distributed substantially regularly along the rear row axis A2.
  • end portions 98 of the auxiliary slits 94 of the outlet manifold channels 76, 78 are substantially aligned along the rear row axis A2 for connection of the outlet manifold channels 76, 78 to the rear row R2 of intermediate holes 38.
  • inlet manifold channel 72, 74 and/or one outlet manifold 76, 78 each one of them being formed of either a cut-out portion or a slit portion.
  • the inlet flow IF path is diverted at the bottom part of the evaporator 10 thanks to the diverter box 20 which is aimed to redirect the flow coming downward through the front row R1 tubes 12 towards the rear row R2 tubes 12 in the upward direction as if the evaporator 10 was formed from individual U-tubes.
  • the diverter box 20 is disclosed in US 2005/0039901 in connection with figure 1 and paragraphs [74] and [75].
  • the diverter box 20 could be omitted by providing the evaporator 10 with U-tubes instead of straight flat tubes 12.
  • the manifold plate 23 is extruded and the recessed portions 72, 74, 76, 78 are formed in the manifold plate 23. This could be done by various methods, for example by cut-off and/or by a stamping process.
  • the manifold plate 23 could also be molded directly with the recessed portions 72, 74, 76, 78.
  • the header plate 26 is fitted onto the flat-tube ends 33. Then, the distribution plate 25, the intermediate plate 24, the fitting block 48, the manifold plate 23, and the cover plate 22 are stacked on top of the header plate 26.
  • the different plates constituting the diverter box 20 at the bottom of the evaporator 10 are assembled in a similar way.
  • the evaporator 10 After the evaporator 10 has therefore been assembled, it is soldered to form a fixed block in a soldering furnace.
  • the evaporator 10 could have only one row of tubes 12.
  • the collector box 18 is provided with only one inlet port 44, the outlet port 46 being arranged in the bottom part of the evaporator 10 which is provided with a substantially symmetrical outlet collector box 100 in replacement of the diverter box 20.
  • the outlet collector box 100 is preferably manufactured according to the teachings of the present invention.
  • the outlet collector box 100 comprises a bottom manifold plate 102 with an outlet manifold channel 104 similar to one of the outlet manifold channels 76, 78 of the preferred embodiment.
  • An associated bottom cover plate 108 is also provided to close the outlet manifold channel 104 of the bottom manifold plate 102.
  • the manifold plate 23 has only one inlet manifold channel 72 formed of a cut-out portion 80 and the bottom manifold plate 102 has only one outlet manifold channel 104 also formed of a cut-out portion 106.
  • the present alternative embodiment would have some technical advantages with regards to its transverse compactness and its simplified structure which would make it easy to manufacture.

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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)
EP10157289.9A 2010-03-23 2010-03-23 Wärmetauscher mit Verteilerplatte Not-in-force EP2372283B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10157289.9A EP2372283B1 (de) 2010-03-23 2010-03-23 Wärmetauscher mit Verteilerplatte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10157289.9A EP2372283B1 (de) 2010-03-23 2010-03-23 Wärmetauscher mit Verteilerplatte

Publications (2)

Publication Number Publication Date
EP2372283A1 true EP2372283A1 (de) 2011-10-05
EP2372283B1 EP2372283B1 (de) 2013-09-04

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014203038A1 (de) * 2014-02-19 2015-08-20 MAHLE Behr GmbH & Co. KG Wärmeübertrager
EP2998683A4 (de) * 2013-05-15 2017-03-22 Mitsubishi Electric Corporation Laminiertes kopfteil, wärmetauscher und klimaanlage
KR20170074991A (ko) * 2014-11-04 2017-06-30 미쓰비시덴키 가부시키가이샤 적층형 헤더, 열교환기, 및, 공기 조화 장치
EP3457070A1 (de) * 2017-09-19 2019-03-20 VALEO AUTOSYSTEMY Sp. Z. o.o. Verteiler für eine wärmetauscheranordnung und verfahren zur herstellung solch eines verteilers
WO2019223797A1 (zh) * 2018-05-25 2019-11-28 杭州三花研究院有限公司 集管箱及换热器
JPWO2021149223A1 (de) * 2020-01-23 2021-07-29
EP3907459A1 (de) * 2020-05-04 2021-11-10 Valeo Autosystemy SP. Z.O.O. Wärmetauscher

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3534091B1 (de) * 2016-10-26 2021-10-06 Mitsubishi Electric Corporation Verteiler und wärmetauscher

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205347A (en) 1992-03-31 1993-04-27 Modine Manufacturing Co. High efficiency evaporator
JP2005188787A (ja) * 2003-12-24 2005-07-14 Calsonic Kansei Corp 熱交換器のヘッダタンク
WO2009124858A1 (en) 2008-04-07 2009-10-15 Delphi Technologies, Inc. Heat exchanger provided with a fitting block

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5242016A (en) * 1992-04-02 1993-09-07 Nartron Corporation Laminated plate header for a refrigeration system and method for making the same
JPH09189463A (ja) * 1996-02-29 1997-07-22 Mitsubishi Electric Corp 熱交換器の分配装置及びその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205347A (en) 1992-03-31 1993-04-27 Modine Manufacturing Co. High efficiency evaporator
JP2005188787A (ja) * 2003-12-24 2005-07-14 Calsonic Kansei Corp 熱交換器のヘッダタンク
WO2009124858A1 (en) 2008-04-07 2009-10-15 Delphi Technologies, Inc. Heat exchanger provided with a fitting block

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2998683A4 (de) * 2013-05-15 2017-03-22 Mitsubishi Electric Corporation Laminiertes kopfteil, wärmetauscher und klimaanlage
US10077953B2 (en) 2013-05-15 2018-09-18 Mitsubishi Electric Corporation Stacking-type header, heat exchanger, and air-conditioning apparatus
DE102014203038A1 (de) * 2014-02-19 2015-08-20 MAHLE Behr GmbH & Co. KG Wärmeübertrager
US10281223B2 (en) 2014-02-19 2019-05-07 MAHLE Behr GmbH & Co. KG Heat exchanger
KR20170074991A (ko) * 2014-11-04 2017-06-30 미쓰비시덴키 가부시키가이샤 적층형 헤더, 열교환기, 및, 공기 조화 장치
EP3457070A1 (de) * 2017-09-19 2019-03-20 VALEO AUTOSYSTEMY Sp. Z. o.o. Verteiler für eine wärmetauscheranordnung und verfahren zur herstellung solch eines verteilers
WO2019057747A1 (en) * 2017-09-19 2019-03-28 Valeo Autosystemy Sp. Z O.O. COLLECTOR FOR HEAT EXCHANGER ASSEMBLY AND METHOD FOR MANUFACTURING SUCH MANIFOLD
WO2019223797A1 (zh) * 2018-05-25 2019-11-28 杭州三花研究院有限公司 集管箱及换热器
US11624565B2 (en) 2018-05-25 2023-04-11 Hangzhou Sanhua Research Institute Co., Ltd. Header box and heat exchanger
JPWO2021149223A1 (de) * 2020-01-23 2021-07-29
EP3907459A1 (de) * 2020-05-04 2021-11-10 Valeo Autosystemy SP. Z.O.O. Wärmetauscher
WO2021223944A1 (en) * 2020-05-04 2021-11-11 Valeo Autosystemy Sp. Z O.O. A heat exchanger

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