EP1744116A2 - Wärmetauscher - Google Patents

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Publication number
EP1744116A2
EP1744116A2 EP06115920A EP06115920A EP1744116A2 EP 1744116 A2 EP1744116 A2 EP 1744116A2 EP 06115920 A EP06115920 A EP 06115920A EP 06115920 A EP06115920 A EP 06115920A EP 1744116 A2 EP1744116 A2 EP 1744116A2
Authority
EP
European Patent Office
Prior art keywords
header member
header
heat exchanger
heat exchange
flange
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.)
Withdrawn
Application number
EP06115920A
Other languages
English (en)
French (fr)
Other versions
EP1744116A3 (de
Inventor
Takayuki Ohno
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.)
Sanden Corp
Original Assignee
Sanden Corp
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 Sanden Corp filed Critical Sanden Corp
Publication of EP1744116A2 publication Critical patent/EP1744116A2/de
Publication of EP1744116A3 publication Critical patent/EP1744116A3/de
Withdrawn legal-status Critical Current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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments

Definitions

  • the present invention relates to a heat exchanger, and, more specifically, to a structure of a heat exchanger such as an evaporator used in a refrigeration cycle of an air conditioning system for vehicles, which can be improved in assembling property and which can be manufactured at a high accuracy.
  • a heat exchanger comprises heat exchange tubes (for example, flat tubes) and a header with tube insertion holes into each of which an end portion of each heat exchange tube is inserted (for example, JP-B-7-121451 and JP-A-2003-214794 ).
  • the heat exchanger is assembled by inserting respective end portions of a plurality of heat exchange tubes into respective corresponding tube insertion holes provided on a header, as needed by stacking outer fins and tubes alternately, and the whole of the assembled heat exchanger is brazed in a furnace at a time.
  • a heat exchanger comprises a header and a plurality of heat exchange tubes an end portion of each of which is inserted into each of tube insertion holes formed on the header, and is characterized in that the header is formed from a header member A and a header member B formed dividedly from each other and connected to each other, the header member A being formed as a comb-like shape so that each of slits of the comb-like shape is defined so as to correspond to each of the tube insertion holes and the header member B being abutted to the header member A to complete substantially the whole shape of the header, a flange is formed on the end portion of each of the heat exchange tubes, and each of the heat exchange tubes is connected to at least the header member A at a condition where the flange extends on both side portions of each of the slits of the header member A and the flange is hung from (engaged to) the header member A.
  • each of the heat exchange tubes is inserted into each of the slits from the outer side of the header member A through the opening end, and after insertion, the flange is hung from the header member A at the both side portions of each of the slits.
  • a structure may be employed wherein the flange is formed as an annular shape, and the flange is connected (brazed) to both the header member A and the header member B.
  • a structure may be employed wherein a projection fitted into the opening end of each of the slits is provided on the header member B at a position corresponding to each of the slits of the header member A.
  • a projection fitted into the opening end of each of the slits is provided on the header member B at a position corresponding to each of the slits of the header member A.
  • each of the heat exchange tubes is formed as a flat tube.
  • an inner fin may be provided in each of the heat exchange tubes in order to achieve a more excellent heat exchange performance.
  • a structure may be employed wherein an outer fin is interposed between each of adjacent heat exchange tubes, namely, an alternately stacking structure of outer fins and heat exchange tubes may be employed.
  • heat exchanger according to the present invention is not particularly limited, a great advantage according to the present invention can be obtained particularly in a case where the present invention is applied to a heat exchanger manufactured at a condition of mass production for an air conditioning system for vehicles such as an evaporator used in a refrigeration cycle of the air conditioning system for vehicles.
  • the structure is employed wherein the heat exchange tube with the flange processed at its end portion is hung from the header member A formed as a comb-like shape, assembling of the tubes and the header is extremely facilitated.
  • the end portion of the heat exchange tube can be inserted into the slit of the comb-like shape of the header member A from the outer side of the header member A, the insertion working can be greatly facilitated as compared with a conventional working for inserting the tube end portion into a conventional tube insertion hole.
  • a severe dimensional accuracy is not required for a fitting structure between the slit and the tube end portion, management of the dimensions of parts may be facilitated, and at such a condition, a desirable brazing becomes possible.
  • the structure is employed wherein the flange is connected (brazed) to the inner surface of the header (the inner surface of the header member A, or, the inner surfaces of both the header member A and the header member B), it becomes possible to enlarge the area for brazing between the tube and the header, and therefore, occurrence of improper brazing may be surely prevented.
  • Figs. 1 to 8 depict a heat exchanger according to a first embodiment of the present invention.
  • heat exchanger 1 comprises a pair of headers 2 and 3, a plurality of heat exchange flat tubes 4 an end portion of each of which is inserted into each of tube insertion holes formed on headers 2 and 3, outer fins 5 disposed between adjacent heat exchange tubes 4 and at outer positions of the respective outermost tubes 4 which are stacked alternately with tubes 4, and side plates 6 and 7 disposed at outer positions of the respective outermost outer fins 5.
  • each of headers 2 and 3 is formed as a twin tank structure, and inlet pipe 8 and outlet pipe 9 for fluid (for example, refrigerant) are provided on the upper-side header 2 depicted in Fig. 1.
  • headers 2 and 3 is formed from two members divided from each other, also as depicted in Figs. 3 and 4. Namely, the whole shape of each of headers 2 and 3 is completed substantially from a header member A (10) and a header member B (11) connected to each other.
  • header member A (10) is formed in a form of twin type structure in which two portions each having a semi-circular cross-sectional shape are connected to each other and the header member A (10) is formed as a comb-like shape having slits 12.
  • Each of slits 12 corresponds to each of the tube insertion holes.
  • header member A (10) is formed as a twin type structure, in accordance with this structure, the comb-like shape is formed toward each of both sides of header member A(10).
  • each of slits 12 has an opening end 13 which opens toward an outer side of header member A (10)
  • each of heat exchange tubes 4 is inserted into each of slits 12 from the outer side of header member A (10) through opening end 13, and after insertion, a flange of heat exchange tube 4 is hung from header member A (10) at both side portions of each of slits 12, as described later.
  • a dimension C which is a width of each slit 12 and each opening end 13, is set at a dimension which is slightly larger than the thickness of each heat exchange tube 4 determined at its both outer surfaces. However, it is not necessary to control this dimension so severely.
  • header member B (11) formed in a form of twin type structure in which two portions each having a semi-circular cross-sectional shape are connected to each other, and this header member B (11) does not have slits.
  • the whole shape of each of headers 2 and 3 is completed by connecting header member A (10) and header member B (11) to each other, namely, by connecting header member A (10) and header member B (11) to each other so that each semi-circular cross-sectional portion of header member A (10) and each semi-circular cross-sectional portion of header member B (11) are abutted to each other to form a circular cross-sectional shape.
  • Each heat exchange tube 4 is formed in this embodiment, as depicted in Fig. 5.
  • a pair of tube plates 14a and 14b are stacked and connected to each other so as to form a flow path 15 therein extending in the longitudinal direction of the tube, and a wave-type inner fin 16 is inserted into flow path 15.
  • a flange 17 is formed on each longitudinal end portion of heat exchange tube 4 integrally with heat exchange tube 4, also as shown in Figs. 6A and 6B.
  • Flange 17 is formed so that, when heat exchange tube 4 is inserted into slit 12 of header member A (10) from outer side of header member A (10), the flange 17 can extend on both side portions of slit 12 and the flange 17 can be hung from header member A (10).
  • this flange 17 is formed as a structure in which respective flange forming portions 17a and 17b formed on the end portions of respective tube plates 14a and 14b are connected to each other. Further, as shown in Fig. 6B, a dimension D of flange 17 in its thickness direction is set larger than a thickness E of a tube portion of heat exchange tube 4. Therefore, after heat exchange tube 4 is inserted into slit 12 at a portion having the thickness E, flange 17 is surely hung at both side portions of slit 12.
  • flange 17 is formed as an annular shape in its cross section.
  • a connected portion 18 between flange 17 and the inner surface of the header is formed so as to extend over the entire circumference of the inner surface of the header.
  • each heat exchange tube 4 with flange 17 at its longitudinal end portion is inserted into slit 12 of the comb-like shape of header member A (10) from the outer side of header member A (10) and the inserted heat exchange tube 4 is hung from header member A (10) at both side portions of slit 12 via the engagement of flange 17 with the inner surface of header member A (10), even if the dimension of slit 12 and the thickness of heat exchange tube 4 are not controlled and managed so severely, heat exchange tube 4 can be inserted surely and easily.
  • the contact area with header member A (10), or the contact area with header member A (10) and header member B (11), is ensured to be great by flange 17, an improper brazing between the tube and the header can be surely prevented. Namely, the management of dimensions of parts can be facilitated, the assembling can be facilitated, and the brazing property can be improved.
  • Fig. 9 depicts a connecting portion between a header and a heat exchange tube of a heat exchanger according to a second embodiment of the present invention.
  • a projection 22 fitted into each opening end 13 of each slit 12 is formed on header member B (21) integrally with header member B (21) at each position corresponding to each slit 12 of header member A (10).
  • header member B (21) can be surely and easily set at a desirable position relative to header member A (10).
  • the other structures are substantially the same as those in the first embodiment aforementioned.
  • the present invention can be applied to any heat exchanger, and particularly it is suitable as a heat exchanger used in an air conditioning system for vehicles, which is manufactured at a condition of mass production, and for which an easy and proper brazing is required, such as an evaporator for refrigerant.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP06115920A 2005-07-13 2006-06-22 Wärmetauscher Withdrawn EP1744116A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005204126A JP4663434B2 (ja) 2005-07-13 2005-07-13 熱交換器

Publications (2)

Publication Number Publication Date
EP1744116A2 true EP1744116A2 (de) 2007-01-17
EP1744116A3 EP1744116A3 (de) 2007-12-26

Family

ID=37074562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06115920A Withdrawn EP1744116A3 (de) 2005-07-13 2006-06-22 Wärmetauscher

Country Status (2)

Country Link
EP (1) EP1744116A3 (de)
JP (1) JP4663434B2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949654A (zh) * 2010-10-09 2011-01-19 苏州华爱电子有限公司 翅片管一体式热交换器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101416461B1 (ko) 2008-05-30 2014-07-08 현대자동차 주식회사 분리형 라디에이터

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207738A (en) * 1992-08-28 1993-05-04 Valeo Heat exchanger manifold assembly
FR2817334A1 (fr) * 2000-11-27 2002-05-31 Valeo Thermique Moteur Sa Echangeur de chaleur brase, notamment pour vehicule automobile, et son procede de fabrication
FR2887975A1 (fr) * 2005-06-29 2007-01-05 Valeo Systemes Thermiques Echangeur de chaleur a tubes plats resistant a la pression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252795U (de) * 1985-09-19 1987-04-02
JPH0220635Y2 (de) * 1985-10-09 1990-06-05
JPH01114697A (ja) * 1987-10-29 1989-05-08 Nippon Denso Co Ltd 熱交換器
JPH0624679Y2 (ja) * 1989-11-24 1994-06-29 三菱アルミニウム株式会社 熱交換器
JPH0473788U (de) * 1990-11-07 1992-06-29
JPH04278196A (ja) * 1991-03-06 1992-10-02 Sanden Corp 熱交換器
JP2000292090A (ja) * 1999-04-08 2000-10-20 Bosch Automotive Systems Corp 熱交換器及び熱交換器の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207738A (en) * 1992-08-28 1993-05-04 Valeo Heat exchanger manifold assembly
FR2817334A1 (fr) * 2000-11-27 2002-05-31 Valeo Thermique Moteur Sa Echangeur de chaleur brase, notamment pour vehicule automobile, et son procede de fabrication
FR2887975A1 (fr) * 2005-06-29 2007-01-05 Valeo Systemes Thermiques Echangeur de chaleur a tubes plats resistant a la pression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949654A (zh) * 2010-10-09 2011-01-19 苏州华爱电子有限公司 翅片管一体式热交换器

Also Published As

Publication number Publication date
JP2007024350A (ja) 2007-02-01
JP4663434B2 (ja) 2011-04-06
EP1744116A3 (de) 2007-12-26

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