US20110061844A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
US20110061844A1
US20110061844A1 US12/872,508 US87250810A US2011061844A1 US 20110061844 A1 US20110061844 A1 US 20110061844A1 US 87250810 A US87250810 A US 87250810A US 2011061844 A1 US2011061844 A1 US 2011061844A1
Authority
US
United States
Prior art keywords
heat exchanger
distribution
refrigerant
exchanger according
distribution tube
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
US12/872,508
Other languages
English (en)
Inventor
Jiang Jianlong
Wang Feng
Liu Huazhao
Lin-Jie Huang
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.)
Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Danfoss AS
Original Assignee
Danfoss Sanhua Hangzhou Micro Channel Heat Exchanger Co 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 Danfoss Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd filed Critical Danfoss Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Assigned to Danfoss Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd reassignment Danfoss Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FENG, Wang, HUANG, LIN-JIE, HUAZHAO, LIU, JIANLONG, JIANG
Publication of US20110061844A1 publication Critical patent/US20110061844A1/en
Assigned to SANHUA HOLDING GROUP CO., LTD., DANFOSS A/S reassignment SANHUA HOLDING GROUP CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Danfoss Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd
Assigned to SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO. reassignment SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SANHUA HOLDING GROUP CO., LTD
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F28F9/027—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 distribution pipes
    • F28F9/0273—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 distribution pipes with multiple holes
    • 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

Definitions

  • the present invention relates to a heat exchanger.
  • a heat exchanger generally comprises an inlet header, an outlet header, flat tubes and fins.
  • a tubular distributor is generally disposed in the inlet header, the refrigerant is entered into the distributor from a refrigerant source and then the distributor distributes the refrigerant into the interior of the header. Since the distributor is disposed inside the inlet header, the assembling and disassembling of the distributor is complex, the distributor is difficult to maintain, and the refrigerants in the inlet header and the distributor affect each other disadvantageously.
  • the present invention is directed to solve at least one of the problems existing in the prior art.
  • an embodiment of the present invention provides a heat exchanger, comprising: an inlet header defining a refrigerant chamber therein; an outlet header spaced apart from the inlet header; a plurality of tubes, two ends of each tube being connected and communicating with the inlet and outlet headers respectively; a plurality of fins, each of which is interposed between adjacent tubes, and a distribution tube disposed outside the refrigerant chamber and formed with a distribution opening through which the distribution tube communicates with the refrigerant chamber.
  • the distribution tube since the distribution tube is not inserted into the refrigerant chamber within the inlet header, the distribution tube is easy to assemble, disassemble and maintain, the refrigerants in the inlet header and the distribution tube do not affect each other disadvantageously, thus enhancing distribution of refrigerant.
  • FIG. 1 is a schematic view of a heat exchanger according to an embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view of the heat exchanger taken along line E-E in FIG. 1 ;
  • FIGS. 3 a and 3 b show different types of the distribution opening in the distribution tube of the heat exchanger
  • FIG. 4 is a partial cross-sectional view of a heat exchanger according to another embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view of a heat exchanger according to still another embodiment of the present invention.
  • FIG. 6 is a partial cross-sectional view of a heat exchanger according to still another embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view of a conventional heat exchanger.
  • FIG. 7 shows a partial cross-sectional view of a conventional heat exchanger.
  • the distributor 1 ′ of the conventional heat exchanger is inserted into the inlet header 2 ′.
  • the distributor 1 ′ is difficult to assemble and disassemble.
  • the refrigerant in the distributor 1 ′ and the refrigerant in the inlet header 2 ′ disadvantageously disturb each other.
  • the number of distributors 1 ′ that can be disposed in the inlet header 2 ′ is limited, so that the distributed amount of the refrigerant is difficult to control.
  • the heat exchanger according to an embodiment of the present invention comprises an inlet header 2 , an outlet header 6 , tubes 3 , fins 7 and a distribution tube 1 .
  • the inlet header 2 defines a refrigerant chamber S 1 therein.
  • the whole inner chamber of the inlet header 2 is the refrigerant chamber S 1 .
  • a partition 4 is disposed inside the inlet header 2 so as to divide an interior of the inlet header 2 into the refrigerant chamber S 1 and a cavity S 2 isolated from each other (which will be described below).
  • the outlet header 6 and the inlet header 2 are spaced apart from each other, and for example, disposed substantially parallelly to each other.
  • Two ends of each tube 3 are connected to and communicate with the inlet and outlet headers 2 , and 6 respectively, for example by welding, such that the inlet header 2 communicates with the outlet header 6 via refrigerant channels in tubes 3 .
  • the refrigerant channel of tube 3 may be a micro-channel for instance, therefore the heat exchanger is referred to as a micro-channel heat exchanger.
  • the present invention is not limited to micro-channel heat exchanger designs.
  • Each fin 7 is disposed between adjacent tubes 3 so as to enhance the effect of heat transfer.
  • a distribution opening 14 is formed in the distribution tube 1 .
  • the distribution tube 1 is disposed outside the refrigerant chamber S 1 , and an inner chamber 13 of the distribution tube 1 communicates with the refrigerant chamber S 1 via the distribution opening 14 .
  • a through hole 21 is formed accordingly in a wall of the inlet header 2 defining the refrigerant chamber S 1 .
  • the distribution tube 1 is not disposed in the refrigerant chamber S 1 of the inlet header 2 .
  • the distribution tube 1 is not inserted into the refrigerant within the inlet header 2 . Therefore, assembling and disassembling of the distribution tube 1 are simple, the distribution tube 1 is easy to maintain, and the refrigerants in the inlet header 2 and the distribution tube 1 do not affect each other disadvantageously, thus enhancing distribution of the refrigerant.
  • the distribution tube 1 is mounted onto the outer wall of the inlet header 2 and the distribution opening 14 corresponds to the through hole 21 . Therefore, the refrigerant, which enters into the inner chamber 13 of the distribution tube 1 from a refrigerant source (not shown), is sprayed into the refrigerant chamber S 1 via the distribution opening 14 and the through hole 21 , thus eliminating the separation of vapor refrigerant and liquid refrigerant in the inlet header 2 and enhancing the effect of heat transfer.
  • a ratio of an inner diameter of the distribution tube 1 to a hydraulic inner diameter of the refrigerant chamber S 1 is within a range of about 0.17 to about 0.79.
  • the distribution tube 1 is formed integrally with a mounting foot 12 having a surface adapted to outer surface of inlet header 2 , so that the distribution tube 1 is fixed onto the outer wall of the inlet header 2 , for example, by welding the mounting foot 12 to the outer wall of the inlet header 2 .
  • the distribution opening 14 penetrates through the mounting foot 12 and corresponded to the through hole 21 .
  • the distribution opening 14 comprises a plurality of orifices formed in the distribution tube 1 separated from each other.
  • the orifice may be a circular orifice or a slot having any other shapes.
  • the distribution opening 14 may be formed as a single slot extending along the longitudinal direction of the distribution tube 1 .
  • the distribution opening 14 is circular and its hydraulic diameter is within a range of from about 0.2 to about 4 mm, thus further improving the heat transfer effect.
  • a ratio of an area of the distribution opening 14 to a cross-sectional area of the refrigerant chamber S 1 is within the range of from about 0.3 to about 2. Experiments conducted by the present inventors prove that the above range can enhance distribution of the refrigerant.
  • the distribution tube 1 is fixed onto the outer wall of the inlet header 2 , the number of distribution tubes 1 is easy to change.
  • the number of inlet headers 2 used may be several so as to satisfy the requirements of the heat exchanger for different amounts of refrigerant, and the distribution of the refrigerant is easy to control by controlling individual distribution tubes 1 .
  • an opposite direction B to an outflow direction of the refrigerant discharged from the distribution opening 14 is at an angle of about 45° to about 315° with a flow direction A of a refrigerant in the tubes 3 .
  • the distributing effect of the refrigerant is further enhanced by setting the angle between the direction A and B in the above angle range.
  • the direction B is at an angle of 180° with the direction A.
  • the direction B is at an angle of 90° with the direction A.
  • the distribution tube 1 without the mounting foot 12 thereon is connected and communicated with the refrigerant chamber S 1 of the inlet header 2 via a communication pipe 5 rather than the mounting foot 12 .
  • a first end of the communication pipe 5 is welded to the distribution tube 1 at the position of the distribution opening 14 , and a second end thereof is extended into the refrigerant chamber S 1 penetrated through the wall of the inlet header 2 .
  • the joint of the communication pipe 5 and the inlet header 2 is sealed, for example, via welding the communication pipe 5 to the inlet header 2 , that is, the gap between the communication pipe 5 and the inlet header 2 is sealed.
  • a partition 4 is disposed inside the inlet header 2 so as to divide the interior of the inlet header 2 into the refrigerant chamber S 1 and a cavity S 2 isolated from each other. There will be no refrigerants in the cavity S 2 , and the distribution tube 1 is fixed onto the outer wall of the inlet header 2 and communicates with the refrigerant chamber S 1 via the distribution opening 14 and the through hole 21 .
  • the provision of the partition 4 reduces the volume of the refrigerant chamber S 1 , thus further enhancing distribution of the refrigerant.
  • the distribution tube 1 is formed with a mounting foot, so that the distribution tube 1 may be fixed conveniently onto the outer wall of the inlet header 2 .
  • FIG. 6 shows an alternative embodiment of the present invention.
  • the distribution tube 1 is disposed inside the cavity S 2 rather than fixed onto the outer wall of the inlet header 2 and communicates with the refrigerant chamber S 1 via the communication pipe 5 . Therefore, the distribution tube 1 is easy to assemble and disassemble, and is not affected by the refrigerant in the inlet header 2 . Meanwhile, the volume of the refrigerant chamber S 1 is reduced, thus improving the distributing effect of the refrigerant and improving the aesthetics of the heat exchanger.
  • the refrigerant enters into the distribution tube 1 along the direction C, and then sprays into the refrigerant chamber S 1 of the inlet header 2 via the distribution opening 14 , thus eliminating the separation of vapor refrigerant and liquid refrigerant in the two-phase flow, and finally the refrigerant flows towards the outlet header 6 along the tubes 3 and exchanges heat during this period.
  • the refrigerant subject to heat exchanging enters into the outlet header 6 and is finally discharged from the outlet header 6 along the direction D.
  • the distribution tube 1 Since the distribution tube 1 is not inserted into the refrigerant chamber within the inlet header 2 , the refrigerant in the inlet header 2 and the distribution tube 1 will not disadvantageously disturb each other, and the distribution tube 1 is easy to assemble, disassemble and maintain. Meanwhile, the distribution tube 1 may be disposed in plural numbers, such that the heat exchanger can satisfy different requirements for the amount of the refrigerant by controlling individual distribution tubes 1 .

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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)
US12/872,508 2009-09-16 2010-08-31 Heat exchanger Abandoned US20110061844A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009101734340A CN101660870B (zh) 2009-09-16 2009-09-16 具有改进制冷剂分配性能的换热器
CN200910173434.0 2009-09-16

Publications (1)

Publication Number Publication Date
US20110061844A1 true US20110061844A1 (en) 2011-03-17

Family

ID=41789025

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/872,508 Abandoned US20110061844A1 (en) 2009-09-16 2010-08-31 Heat exchanger

Country Status (3)

Country Link
US (1) US20110061844A1 (fr)
EP (1) EP2299224B1 (fr)
CN (1) CN101660870B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140202673A1 (en) * 2013-01-24 2014-07-24 Alcoil Usa Llc Heat exchanger
US20140366571A1 (en) * 2010-06-21 2014-12-18 Danfoss A/S Heat exchanger
US20160138872A1 (en) * 2013-03-19 2016-05-19 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. Manifold and heat exchanger having same
US10139140B2 (en) 2013-08-06 2018-11-27 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Refrigerant distribution device and heat exchanger having same
US10247481B2 (en) 2013-01-28 2019-04-02 Carrier Corporation Multiple tube bank heat exchange unit with manifold assembly
US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger
US20200378692A1 (en) * 2014-05-06 2020-12-03 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Bent heat exchanger
US10907903B2 (en) 2016-01-21 2021-02-02 Samsung Electronics Co., Ltd. Air conditioner with flow direction changing mechanism
CN115342560A (zh) * 2022-06-27 2022-11-15 西安交通大学 一种流量均匀分配装置及其应用

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886891B (zh) * 2010-07-20 2012-07-18 三花丹佛斯（杭州）微通道换热器有限公司 制冷剂导引装置和具有它的换热器
CN102564204B (zh) * 2010-12-08 2016-04-06 杭州三花微通道换热器有限公司 制冷剂分配装置和具有它的换热器
DE102012217340A1 (de) * 2012-09-25 2014-03-27 Behr Gmbh & Co. Kg Wärmeübertrager
CN105783085A (zh) * 2016-03-18 2016-07-20 广州市锦铝业科技有限公司 一种多功能墙体
CN114608352A (zh) * 2020-12-08 2022-06-10 杭州三花微通道换热器有限公司 换热器

Citations (6)

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Publication number Priority date Publication date Assignee Title
US5203407A (en) * 1990-11-07 1993-04-20 Zexel Corporation Vehicle-loaded parallel flow type heat exchanger
US20030116308A1 (en) * 1999-05-31 2003-06-26 Mitsubishi Heavy Industries Ltd. Heat exchanger
US6827139B2 (en) * 2002-04-03 2004-12-07 Denso Corporation Heat exchanger for exchanging heat between internal fluid and external fluid and manufacturing method thereof
US7000690B2 (en) * 2001-10-06 2006-02-21 Behr Gmbh & Co. Heat exchanger for a motor vehicle
US7077193B2 (en) * 2003-05-14 2006-07-18 Calsonic Kansei Corporation Compound type heat exchanger
US7481266B2 (en) * 2001-12-21 2009-01-27 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle

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* Cited by examiner, † Cited by third party
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JPH10206081A (ja) * 1997-01-27 1998-08-07 Kobe Steel Ltd オープンラック型蒸発装置の熱交換パネル
CN1536316A (zh) * 2003-04-11 2004-10-13 乐金电子(天津)电器有限公司 热交换器的制冷剂均匀分配装置
CN1611907A (zh) * 2003-10-30 2005-05-04 乐金电子(天津)电器有限公司 集管内的制冷剂分配结构
US20080023184A1 (en) * 2006-07-25 2008-01-31 Henry Earl Beamer Heat exchanger assembly
US20100089559A1 (en) * 2006-10-13 2010-04-15 Carrier Corporation Method and apparatus for improving distribution of fluid in a heat exchanger
ATE556283T1 (de) * 2006-10-13 2012-05-15 Carrier Corp Mehrzügige wärmetauscher mit verteileinsätze aufweisenden rückführendkammern
US7921558B2 (en) * 2008-01-09 2011-04-12 Delphi Technologies, Inc. Non-cylindrical refrigerant conduit and method of making same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203407A (en) * 1990-11-07 1993-04-20 Zexel Corporation Vehicle-loaded parallel flow type heat exchanger
US20030116308A1 (en) * 1999-05-31 2003-06-26 Mitsubishi Heavy Industries Ltd. Heat exchanger
US7000690B2 (en) * 2001-10-06 2006-02-21 Behr Gmbh & Co. Heat exchanger for a motor vehicle
US7481266B2 (en) * 2001-12-21 2009-01-27 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
US6827139B2 (en) * 2002-04-03 2004-12-07 Denso Corporation Heat exchanger for exchanging heat between internal fluid and external fluid and manufacturing method thereof
US7077193B2 (en) * 2003-05-14 2006-07-18 Calsonic Kansei Corporation Compound type heat exchanger

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140366571A1 (en) * 2010-06-21 2014-12-18 Danfoss A/S Heat exchanger
US9752833B2 (en) * 2010-06-21 2017-09-05 Sanhua (Hangzhou) Micro Channel Heat Exchange Co., Ltd Heat exchanger
US9459057B2 (en) * 2013-01-24 2016-10-04 Alcoll USA LLC Heat exchanger
US20140202673A1 (en) * 2013-01-24 2014-07-24 Alcoil Usa Llc Heat exchanger
US10247481B2 (en) 2013-01-28 2019-04-02 Carrier Corporation Multiple tube bank heat exchange unit with manifold assembly
US20160138872A1 (en) * 2013-03-19 2016-05-19 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. Manifold and heat exchanger having same
JP2016514822A (ja) * 2013-03-19 2016-05-23 ダンフォス・マイクロ・チャンネル・ヒート・エクスチェンジャー・（ジャシン）・カンパニー・リミテッド 集合管及び集合管を有する熱交換器
US10139140B2 (en) 2013-08-06 2018-11-27 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Refrigerant distribution device and heat exchanger having same
US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger
US20200378692A1 (en) * 2014-05-06 2020-12-03 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Bent heat exchanger
US11585609B2 (en) * 2014-05-06 2023-02-21 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. Bent heat exchanger
US10907903B2 (en) 2016-01-21 2021-02-02 Samsung Electronics Co., Ltd. Air conditioner with flow direction changing mechanism
CN115342560A (zh) * 2022-06-27 2022-11-15 西安交通大学 一种流量均匀分配装置及其应用

Also Published As

Publication number Publication date
EP2299224A3 (fr) 2014-09-03
CN101660870A (zh) 2010-03-03
EP2299224A2 (fr) 2011-03-23
EP2299224B1 (fr) 2020-05-20
CN101660870B (zh) 2012-07-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DANFOSS SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JIANLONG, JIANG;FENG, WANG;HUAZHAO, LIU;AND OTHERS;REEL/FRAME:025523/0707

Effective date: 20100613

AS Assignment

Owner name: SANHUA HOLDING GROUP CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DANFOSS SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD;REEL/FRAME:028791/0735

Effective date: 20120612

Owner name: DANFOSS A/S, DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DANFOSS SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD;REEL/FRAME:028791/0735

Effective date: 20120612

AS Assignment

Owner name: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SANHUA HOLDING GROUP CO., LTD;REEL/FRAME:034969/0568

Effective date: 20150211

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION