US20040182558A1 - Header for use in heat exchanger, heat exchanger and method for manufacturing the same - Google Patents

Header for use in heat exchanger, heat exchanger and method for manufacturing the same Download PDF

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Publication number
US20040182558A1
US20040182558A1 US10/472,486 US47248604A US2004182558A1 US 20040182558 A1 US20040182558 A1 US 20040182558A1 US 47248604 A US47248604 A US 47248604A US 2004182558 A1 US2004182558 A1 US 2004182558A1
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US
United States
Prior art keywords
wall
base wall
header
reinforcing
opposite
Prior art date
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Abandoned
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US10/472,486
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English (en)
Inventor
Futoshi Watanabe
Yasuji Kawamata
Ryoichi Hoshino
Noboru Ogasawara
Takashi Tamura
Hirohumi Horiuchi
Takashi Terada
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Resonac Holdings Corp
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Individual
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Filing date
Publication date
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Priority to US10/472,486 priority Critical patent/US20040182558A1/en
Assigned to SHOWA DENKO K.K. reassignment SHOWA DENKO K.K. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HORIUCHI, HIROHUMI, HOSHINO, RYOICHI, KAWAMATA, YASUJI, OGASAWARA, NOBORU, TAMURA, TAKASHI, TERADA, TAKASHI, WATANABE, FUTOSHI
Publication of US20040182558A1 publication Critical patent/US20040182558A1/en
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
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/08—Reinforcing means for header boxes

Definitions

  • the present invention relates to a header suitably used for a heat exchanger such as a condenser and an evaporator for use in a refrigeration system for an automobile air-conditioner, and also relates to a method for manufacturing the header.
  • header-type heat exchanger which is provided with a pair of headers and a plurality of heat exchanging tubes disposed in parallel with each other between the headers with opposite ends thereof communicated with the headers, is widely used.
  • a pipe having a round cross-section is widely used as a header.
  • a header having a flat cross-section such as an elliptical cross-section, an oval cross-section or a rectangular cross-section.
  • This header 1 includes two members, that is, a first peripheral wall member 2 and a second peripheral wall member 3 .
  • the first peripheral wall member 2 includes a base wall 2 a in which a plurality of tube insertion apertures 2 c are formed at predetermined intervals along the longitudinal direction of the base wall 2 a and a pair of joining portions 2 b and 2 b provided at lateral sides of the base wall 2 a .
  • the second peripheral wall member 3 includes an opposite wall 3 a ) to be opposed the base wall 2 a and a pair of side walls 3 b and 3 b formed along the lateral sides of the opposite wall 3 a.
  • the first peripheral wall member 2 and the second peripheral wall member 3 are coupled together, and the side walls 3 b and 3 b are joined to the joining portions 2 b and 2 b by pinching processing or brazing processing, thereby forming a header 1 .
  • a plurality of heat exchanging tubes 5 disposed in parallel with each other are inserted into corresponding tube insertion apertures 2 c and fixed therein to thereby fabricate a header-type heat exchanger.
  • the thickness of the peripheral wall member 2 and 3 becomes smaller in accordance with the request that the header be smaller in size and lighter in weight. Therefore, it is difficult to secure predetermined pressure resistance only by the peripheral wall members 2 and 3 . To cope with the problems, it is considered to provide a reinforcing partition 4 in the header 1 as shown by the phantom line.
  • this header 1 having the aforementioned configuration cannot be manufactured by using an electric resistance weld pipe and therefore has to be manufactured by welding or pinching the wall members 2 and 3 .
  • This causes not only a complicated configuration but also an increased number of parts, resulting in complicated assembling operation and an increased manufacturing cost.
  • the reinforcing partition 4 is assembled within the header 1 , it is necessary to form a number of cut-out portions 4 a in the partition 4 by machining processing or the like so as not to impede the insertion of the heat exchanging tube 5 into the header 1 .
  • This requires an adoption of troublesome machining processing and increases the number of processing steps, which in turn increases the manufacturing cost.
  • a header for use in heat exchangers includes a base wall with a plurality of tube insertion apertures for inserting heat exchanging tubes formed at predetermined intervals in a longitudinal direction of the base wall, an opposite wall opposed to the base wall, a pair of side walls disposed at both lateral sides of the base wall and the opposite wall and connecting the lateral sides, and a reinforcing wall disposed between the base wall and the opposite wall along a longitudinal direction thereof and connecting the base wall to the opposite wall.
  • the side walls are integrally formed at both lateral sides of the base wall by bending processing.
  • a first half of the opposite wall constituting one half of the opposite wall is integrally formed at a side of one of the side walls by bending processing.
  • a second half of the opposite wall constituting the other half of the opposite wall is integrally formed at a side of the other of the side walls by bending processing.
  • the reinforcing wall is integrally formed at at least one of sides of the first half of the opposite wall and the second half of the opposite wall by bending processing.
  • the base wall, the side walls, the opposite wall and the reinforcing wall are integrally formed by bending processing, it is not required to perform joining processing of these members, such as brazing processing or pinching processing, and it becomes possible to reduce the number of parts. Furthermore, since the reinforcing wall is disposed between the base wall and the opposite wall, it is possible to assuredly obtain sufficient strength against the inner pressure.
  • the reinforcing wall is formed at each side of the first half of the opposite wall and the second half of the opposite wall. In this case, since there are two reinforcing walls, it becomes possible to further enhance the pressure resistance.
  • a side edge of the reinforcing wall opposed to the base wall is integrally brazed to the base wall.
  • the reinforcing wall is provided with tube engaging cut-out portions formed at positions corresponding to the plurality of tube insertion apertures, whereby each end of the plurality of heat exchanging tubes inserted into the tube insertion apertures is engaged with the tube engaging cut-out portion in a positioned manner.
  • the tube insertion amount adjustment can be performed more easily and accurately, and the tube insertion operation can be performed smoothly.
  • the reinforcing wall is provided with insertion ledges at the side edge thereof opposed to the base wall, and the base wall is provided with insertion ledge engaging apertures at positions corresponding to the insertion ledges, and the insertion ledges are inserted into the insertion ledge engaging apertures and engaged therewith.
  • the insertion ledges of the reinforcing wall are engaged with and fixed to the insertion ledge engaging apertures, it becomes possible to avoid problems such as springback.
  • the provisional assembly can be maintained stably after the bending processing until the brazing processing, which enables to maintain the high dimensional accuracy.
  • the insertion ledges are integrally brazed to the base wall with the insertion ledges inserted into the insertion ledge engaging apertures.
  • a peripheral edge of the tube insertion aperture is inwardly bent.
  • the heat exchanging tube is guided smoothly by the peripheral edge of the tube insertion aperture at the time of inserting the tube into the tube insertion aperture. Therefore, the tube insertion operation can be performed more easily. Furthermore, the joining area between the tube and the tube insertion aperture can be kept larger, which in turn enables to obtain reliable air-tightness of the joined portion.
  • a header for use in heat exchangers the header comprises:
  • reinforcing wall is integrally formed at respective sides of the first half of the opposite wall and the second half of the opposite wall by bending processing
  • insertion ledges are formed at certain intervals in a longitudinal direction of the header at edges of the reinforcing walls opposed to the base wall
  • the base wall is provided with insertion ledge engaging apertures at positions corresponding to the insertion ledges
  • the insertion ledge engaging apertures are formed along the longitudinal direction of the header in a zigzag manner.
  • a tip portion of the insertion ledge is inserted into the insertion ledge engaging aperture, and the tip portion of the insertion ledge is bent and engaged with an external surface of the base wall.
  • the bent portion is formed by bending the tip portion of the insertion ledge by caulking processing.
  • the aforementioned header for use in heat exchangers can be manufactured by the following method.
  • the header in a method for manufacturing a header for use in heat exchangers in which the header includes a base wall with a plurality of tube insertion apertures for inserting heat exchanging tubes formed at predetermined intervals in a longitudinal direction of the base wall, an opposite wall opposed to the base wall, a pair of side walls disposed at both lateral sides of the base wall and the opposite wall and connecting the lateral sides, and a reinforcing wall disposed between the base wall and the opposite wall along a longitudinal direction thereof and connecting the base wall to the opposite wall, the method comprises:
  • a step for preparing a formed plate including a base wall region having the plurality of tube insertion apertures and extending in a longitudinal direction of the formed plate, a pair of side wall regions formed at both lateral sides of the base wall region and extending in the longitudinal direction, a first half region of an opposite wall formed at one of lateral sides of the base wall region and extending in the longitudinal direction, a second half region of an opposite wall formed at the other of lateral sides of the base wall region and extending in the longitudinal direction, and a reinforcing wall region formed at at least one of the first and second half regions of the opposite wall and extending in the longitudinal direction;
  • the reinforcing wall region is formed at each side of the first half region and the second half region of the opposite wall.
  • the tube engaging cut-out portions are formed at portions of the reinforcing wall corresponding to the plurality of tube insertion apertures such that ends of the heat exchanging tubes inserted in the tube insertion apertures are engaged with the engaging cut-out portions in a positioned manner.
  • insertion ledges are formed at a base wall side edge of the reinforcing wall and insertion ledge engaging apertures are formed at positions of the base wall corresponding to the insertion ledges, further comprising a step of inserting the insertion ledges into the insertion ledge engaging apertures.
  • the formed plate is formed by die-cutting and pressing a brazing sheet with a brazing layer clad on at least one surface thereof.
  • the fourth aspect of the present invention specifies the heat exchanger using the header according to the first aspect of the present invention.
  • a heat exchanger comprises:
  • At least one of the pair of headers includes:
  • a reinforcing wall disposed between the base wall and the opposite wall along a longitudinal direction thereof and connecting the base wall to the opposite wall
  • the reinforcing wall is integrally formed at at least one of sides of the first half of the opposite wall and the second half of the opposite wall by bending processing.
  • the reinforcing wall is provided with tube engaging cut-out portions formed at positions corresponding to the plurality of tube insertion apertures, whereby each end of the plurality of heat exchanging tubes inserted into the tube insertion apertures is engaged with the tube engaging cut-out portion in a positioned manner.
  • each end of the plurality of heat exchanging tubes is brazed to the header.
  • the fifth aspect of the present invention specifies the heat exchanger using the headers according to the second aspect of the present invention.
  • a heat exchanger comprises:
  • At least one of the pair of headers includes:
  • reinforcing walls disposed between the base wall and the opposite wall along a longitudinal direction thereof and connecting the base wall to the opposite wall
  • each of the reinforcing walls is integrally formed at each of sides of the first half of the opposite wall and the second half of the opposite wall by bending processing
  • each of the reinforcing walls is provided with insertion ledges at a base wall side edge of the reinforcing wall opposed to the base wall at predetermined intervals in a longitudinal direction of the header,
  • the base wall is provided with insertion, ledge engaging apertures at positions corresponding to the insertion ledges, and
  • the reinforcing wall is provided with tube engaging cut-out portions formed at positions corresponding to the plurality of tube insertion apertures, whereby each end of the plurality of heat exchanging tubes inserted into the tube insertion apertures is engaged with the tube engaging cut-out portion in a positioned manner.
  • each end of the plurality of heat exchanging tubes is brazed to the header.
  • the insertion ledge engaging apertures are formed in a zigzag manner in the longitudinal direction of the header.
  • the sixth aspect of the present invention specifies the manufacturing method of the heat exchanger using the headers according to the first aspect of the present invention.
  • a manufacturing method of a heat exchanger the method comprises:
  • At least one of the pair of headers includes:
  • the reinforcing wall is integrally formed at at least one of sides of the first half of the opposite wall and the second half of the opposite wall by bending processing.
  • the step for preparing the header comprises:
  • a step for preparing a formed plate including a base wall region having the plurality of tube insertion apertures and extending in a longitudinal direction of the formed plate, a pair of side wall regions formed at both lateral sides of the base wall region and extending in the longitudinal direction, a first half region of an opposite wall formed at one of lateral sides of the base wall 1 region and extending in the longitudinal direction, a second half region of an opposite wall formed at the other of lateral sides of the base wall region and extending in the longitudinal direction, and a reinforcing wall region formed at at least one of the first half and second half regions of the opposite wall and extending in the longitudinal direction;
  • each end of the plurality of heat exchanging tubes is brazed to the header.
  • a manufacturing method of a heat exchanger comprises:
  • At least one of the pair of headers includes:
  • each of the reinforcing walls is integrally formed at each of sides of the first half of the opposite wall and the second half of the opposite wall by bending processing
  • each of the reinforcing walls is provided with insertion ledges at a base wall side edge of the reinforcing wall opposed to the base wall at predetermined intervals in a longitudinal direction of the header,
  • the step for preparing the pair of header comprises:
  • a step for preparing a formed plate including a base wall region having the plurality of tube insertion apertures and extending in a longitudinal direction of the formed plate, a pair of side wall regions formed at both lateral sides of the base wall region and extending in the longitudinal direction, a first half region of an opposite wall formed at one of lateral sides of the base wall 1 region and extending in the longitudinal direction, a second half region of an opposite wall formed at the other of lateral sides of the base wall region and extending in the longitudinal direction, and a reinforcing wall region formed at at least one of the first half and second half regions of the opposite wall and extending in the longitudinal direction;
  • each end of the plurality of heat exchanging tubes is brazed to the header.
  • FIG. 1 is an exploded perspective view showing a header and therearound applied to a heat exchanger according to a first embodiment of the present invention.
  • FIG. 2A is a front view of the header for use in heat exchangers
  • FIG. 2B is a side view thereof.
  • FIG. 3 is a cross-sectional view of the header for use in heat exchangers.
  • FIG. 4 is an enlarged side cross-sectional view showing the tube insertion aperture of the header and therearound.
  • FIG. 5 is a cross-sectional view taken along the line 5 - 5 in FIG. 3.
  • FIG. 6A is a cross-sectional view taken along the line 6 - 6 in FIG. 3, and FIG. 6B is an enlarged cross-sectional view of the portion surrounded by the alternate long and short dash line in FIG. 6A.
  • FIG. 7 is a perspective view showing a press formed plate for manufacturing the header of the embodiment.
  • FIG. 8 is a plane view showing the press formed plate.
  • FIG. 9 is a side view showing a header and therearound applied to a heat exchanger according to a second embodiment of the present invention.
  • FIG. 10 is a cross-sectional view showing the header for use in heat exchangers according to the second embodiment.
  • FIG. 11A is a cross-sectional view taken along the line 11 - 11 in FIG. 10, and FIG. 11B is an enlarged cross-sectional view of the portion surrounded by the alternate long and short dash line in FIG. 11A.
  • FIG. 12 is a perspective view showing a press formed plate for manufacturing the header of the second embodiment.
  • FIG. 13 is a plane view showing the press formed plate of the second embodiment.
  • FIGS. 14A to 14 E are enlarged cross-sectional views showing the connecting portion of the reinforcing wall and the base wall of the header for use in heat exchangers and therearound according to a modification of the present invention.
  • FIGS. 15A and 15B are enlarged cross-sectional views showing the connecting portion of the reinforcing wall and the base wall of the header for use in heat exchangers and therearound according to another modification of the present invention.
  • FIG. 16 is an exploded perspective view showing a conventional rectangular header for heat exchangers and therearound.
  • FIGS. 1 to 6 show a header 10 for use in heat exchangers according to a first embodiment of the present invention.
  • the header 10 includes a belt-shaped base wall 20 , an opposite wall 30 to be opposed to the base wall 20 , a pair of side walls 40 a and 40 b disposed between the lateral sides of the base wall 20 and the opposite wall 30 and a pair of reinforcing walls 50 a and 50 b disposed between the base wall 20 and the opposite wall 30 at the widthwise central position thereof and extending in the longitudinal direction of the header 10 .
  • this header 10 is an integrally formed article obtained by bending a press formed plate 11 having a predetermined shape formed by die-cut press forming.
  • the press formed plate 11 is a wide belt-shaped plate.
  • the plate 11 has a base wall region 21 extending in the longitudinal direction of the plate 11 at the widthwise-middle region of the plate 11 .
  • the base wall region 21 will constitute the aforementioned base wall 20 .
  • side wall regions 41 a and 41 b extending in the longitudinal direction are integrally provided. These side wall regions 41 a and 41 b will constitute the aforementioned side walls 40 a and 40 b .
  • a first half opposite wall region 31 a extending in the longitudinal direction is integrally provided.
  • This first half opposite wall region 31 a will constitute a first half 30 a of the aforementioned opposite wall 30 .
  • a second half opposite wall region 31 b extending in the longitudinal direction is integrally provided.
  • This second half opposite wall region 31 b will constitute a second half 30 b of the aforementioned opposite wall 30 .
  • reinforcing wall regions 51 a and 51 b extending in the longitudinal direction are integrally provided. These reinforcing wall regions 51 a and 51 b will constitute the aforementioned reinforcing walls 50 a and 50 b.
  • tube insertion apertures 23 each extending the widthwise direction of the base wall region 21 are provided at certain intervals in the longitudinal direction of the base wall region 21 .
  • the peripheral portion 23 a of the tube insertion aperture 23 is curved inwardly, i.e., toward the inside of the header to be formed by burring processing.
  • a plurality of square-shaped insertion ledge engaging apertures 25 are formed at certain intervals so as to be located between the adjacent tube insertion apertures 23 .
  • a plurality of tube engaging cut-out portions 53 a and 53 b are formed at predetermined intervals in the longitudinal direction of the reinforcing wall region 51 a and 51 b . Furthermore, at the side edge of the reinforcing wall region 51 a and 51 b between the adjacent tube engaging cut-out portions 53 a and 53 b , a plurality of rectangular-shaped insertion ledges 55 a and 55 b corresponding to the aforementioned tube insertion ledge engaging apertures 25 are formed at predetermined intervals in the longitudinal direction of the plate 11 .
  • bending processing are conducted to this press formed plate 11 along the broken lines (bending lines) shown in FIG. 8 to thereby obtain the aforementioned header 10 .
  • the reinforcing wall regions 51 a and 51 b are bent inwardly by 90° relative to the first half opposite wall region 31 a and the second half opposite wall region 31 b
  • the first half opposite wall region 31 a and the second half opposite wall region 31 b are bent inwardly by 90° relative to the side wall regions 41 a and 41 b
  • both the side wall regions 41 a and 41 b are bent by 90° relative to the base wall region 21 to thereby fit the reinforcing wall regions 51 a and 51 b .
  • the fitted insertion ledges 55 a and 55 b of the reinforcing wall regions 51 a and 51 b are inserted into the insertion ledge engaging apertures 25 of the base wall region 20 , respectively, to thereby engage therewith.
  • the order of bending processing is not limited to the aforementioned embodiment, and may be changed arbitrarily.
  • the header 10 for use in heat exchangers is manufactured.
  • the side wall regions 41 a and 41 b constitute the side walls 40 a and 40 b
  • the first half opposite wall region 31 a constitutes one half 30 a of the opposite wall 30
  • the second half opposite wall region 31 b constitutes the other half 30 b of the opposite wall 30
  • the reinforcing wall regions 51 a and 51 b constitute the reinforcing walls 50 a and 50 b.
  • the tube engaging cut-out portions 53 a and 53 b of the reinforcing walls 50 a and 50 b are disposed so as to face the corresponding tube insertion apertures 23 of the base wall 20 .
  • both the side edges of the tube insertion aperture 23 formed in the base wall 20 are bent outwardly in accordance with the aforementioned bending processing to constitute tube insertion guides 23 b.
  • a heat exchanger which is provided with a pair of headers 10 , a plurality of heat exchanging tubes 60 disposed in parallel with each other with opposite ends thereof communicated with the headers 10 and 10 and corrugated fins 70 interposed between the adjacent heat exchanging tubes 60 , can be obtained.
  • the press formed plate 11 constituting the header 10 and the heat exchanging tube 60 is made of a brazing sheet in which a brazing layer is clad on at least one surface of a bare member or a plate with a brazing layer in which brazing materials such as powder brazing materials are given to at least one surface of a bare member.
  • a provisionally assembled heat exchanger is obtained by alternatively stacking the heat exchanging tubes 60 and the corrugated fins 70 between the pair of headers 10 . Then, the provisionally assembled heat exchanger is brazed in a furnace, thereby obtaining a heat exchanger.
  • the header 10 for use in heat exchangers, since the header 10 is obtained by bending a press formed plate 11 , the header 10 can be manufactured efficiently only by performing a series of bending press working.
  • header 10 of this embodiment is manufactured by using only one sheet of the press formed plate 11 , it is not necessary to perform troublesome joining processing such as brazing processing and/or pinching processing. This results in a decreased number of parts, simplified assembling operation and a reduced manufacturing cost.
  • the header 10 of this embodiment since the reinforcing walls 50 a and 50 b are disposed between the base wall 20 and the opposite wall 30 , sufficient strength against inner pressure can be obtained. Accordingly, the header 10 can be applied to a refrigeration cycle using CO 2 refrigerant in which high pressure resistance is required strictly.
  • the tube engaging cut-out portions 53 a and 53 b of the reinforcing walls 50 a and 50 b can be formed by the die-cut press forming at the time of obtaining the press formed plate 11 , it is not necessary to perform troublesome work such as machining work for forming the cut-out portions, resulting in easier manufacturing of the header.
  • the insertion ledges 55 a and 55 b are formed at the side edges of the reinforcing wall regions 51 a and 51 b of the press formed plate 11 and the insertion ledge engaging apertures 25 are formed in the base wall region 21 , and then the insertion ledge 55 a and 55 b are inserted in the insertion ledge engaging apertures 25 in a positioned manner at the time of bending processing of the press formed plate 11 . Accordingly, faults such as springback due to the bending of the plate can be prevented, thereby stabilizing the configuration of the provisionally assembled article. Thus, the stabilized configuration of the assembled article can be maintained until the brazing processing after the completion of the bending processing, resulting in enhanced dimensional accuracy and high quality.
  • the tube 60 can be guided smoothly at the time of inserting the tube 60 into the aperture 23 .
  • the tube insertion can be performed easily.
  • the inwardly curved peripheral portion 23 a of the tube insertion aperture 23 increases the joining area between the peripheral portion 23 a and the tube 60 , resulting in enhanced air-tightness therebetween, which in turn further enhances quality and reliability of the header.
  • FIGS. 9 to 13 show a header 10 for use in heat exchangers according to a second embodiment of the present invention.
  • the press formed plate 11 constituting the header 10 is provided with a base wall region 21 , side wall regions 41 a and 41 b , a first half opposite wall region 31 a , a second half opposite wall region 31 b and first and second reinforcing wall regions 51 a and 51 b .
  • tube insertion apertures 23 are provided at certain intervals.
  • insertion ledges 55 a and 55 b are formed alternatively in the longitudinal direction of the plate 11 . Furthermore, between the adjacent tube insertion apertures 23 in the base wall region 21 , a first insertion ledge engaging aperture 25 a and a second insertion ledge engaging aperture 25 b corresponding to the insertion ledges 55 a and 55 b are formed alternatively in a zigzag manner.
  • each region 31 a , 31 b , 41 a , 41 b , 51 a and 51 b of this press formed plate 11 is bent, so that the reinforcing regions 51 a and 51 b are put together.
  • the insertion ledges 55 a and 55 b of the reinforcing regions 51 a and 51 b are inserted into corresponding insertion ledge engaging apertures 25 a and 25 b .
  • the tip portions of the insertion ledges 55 a and 55 b are bent outwardly by caulking processing, whereby the bent portions 80 a and 80 b are engaged with the external surface of the base wall 20 .
  • the header 10 for use in heat exchangers is manufactured.
  • the insertion ledges 55 a and 55 b formed at the side edges of the reinforcing regions 51 a and 51 b of the press formed plate 11 are formed alternatively along the longitudinal direction of the header between the first reinforcing region 51 a and the second reinforcing region 51 b , and that the insertion ledge engaging apertures 25 a and 25 b are formed in a zigzag manner corresponding to the insertion ledges 55 a and 55 b .
  • the insertion operations of the insertion ledges 55 a and 55 b into the engaging apertures 25 a and 25 b can be performed smoothly, which makes it easier to manufacture the header 10 .
  • the tip portions of the insertion ledges 55 a and 55 b are bent outwardly by caulking processing so that the bent portions 80 a and 80 b are engaged with the external surface of the base wall 20 , stronger engaging status can be obtained and the number of insertion ledges 55 a and 55 b can be decreased, resulting in decreased amount of materials. Accordingly, the manufacturing cost can be decreased. Furthermore, since the tip portion of the insertion ledge is caulked and fixed, faults such as spring back due to a bending process can be prevented more assuredly, thereby stabilizing the configuration. Accordingly, the dimensional accuracy can be further improved, and therefore header products with higher quality can be obtained.
  • the tip portions of the reinforcing walls 50 a and 50 b are inserted into and engaged with the base wall 20 .
  • the present invention is not limited to the above.
  • the tip ends of the reinforcing walls 50 a and 50 b may be brazed to the inner surface of the base wall 20 with the tip ends abutted thereto.
  • the outwardly bent tip portions of the reinforcing walls 50 a and 50 b may be brazed to the inner surface of the base wall 20 .
  • the larger joining area between the reinforcing walls 50 a and 50 b and the base wall 20 can be secured, which assuredly prevents generation of faults such as poor brazing.
  • two tip portions of the reinforcing walls 50 a and 50 b may be secured to the base wall 20 by another methods other than the aforementioned methods.
  • the reinforcing walls 50 a and 50 b may be brazed to the base wall 20 in the state in which the tip end of the first reinforcing wall 50 a abuts against the inner surface of the base wall 20 while the insertion ledge 55 b of the second reinforcing wall 50 b is inserted into the base wall 20 .
  • the reinforcing walls 50 a and 50 b may be brazed to the base wall 20 in the state in which the tip end of the first reinforcing wall 50 a abuts against the inner surface of the base wall 20 while the bent tip portion 81 b of the second reinforcing wall 50 b abuts against the base wall 20 .
  • the reinforcing walls 50 a and 50 b may be brazed to the base wall 20 in the state in which the bent tip portion 81 a of the first reinforcing wall 50 a abuts against the inner surface of the base wall 20 while the insertion ledge 55 b of the second reinforcing wall 50 b abuts against the base wall 20 .
  • the reinforcing walls 50 a and 50 b may be brazed to the base wall 20 in the state in which the bent tip portions 81 a and 81 b formed at certain intervals along the longitudinal direction of the reinforcing walls 50 a and 50 b abut against the base wall 20 while the end portions between the bent tip portions abut against the base wall 20 .
  • the reinforcing walls 50 a and 50 b may be brazed to the base wall 20 in the state in which the bent tip portions 81 a and 81 b formed at certain intervals along the longitudinal direction of the reinforcing walls 50 a and 50 b abut against the base wall 20 while the end portions 55 b between the bent tip portions are inserted into the base wall 20 .
  • two reinforcing walls 50 a and 50 b are provided.
  • a reinforcing wall region may be provided at either the first half opposite wall region 31 a or the second half opposite wall region 31 b .
  • one of the aforementioned reinforcing walls 50 a and 50 b may be omitted.
  • the base wall, the side walls, the opposite wall and the reinforcing wall are integrally formed by bending processing, it is not necessary to perform troublesome joining processing such as brazing processing or pinching processing. Furthermore, it is possible to decrease the number of parts. Accordingly, the assembly operation can be performed easily and the manufacturing costs can be decreased. Furthermore, since the reinforcing wall is disposed between the base wall and the opposite wall, enough pressure resistance can be obtained assuredly.
  • the positioning of the tube can be performed by engaging the end portion of the tube with the cut-out portion.
  • the insertion of the tube can be performed smoothly and the assembly operation can be performed easily.
  • the reinforcing wall can be fixed to the base wall more assuredly.
  • faults such as springback can be prevented assuredly, and the configuration of the provisional header can be stabilized. Accordingly, there is advantage that higher quality can be obtained.
  • the joining area of the reinforcing wall to the base plate can be increased. Accordingly, it becomes possible to more assuredly prevent securing faults such as brazing faults.
  • the peripheral portion of the tube insertion aperture is curved inwardly, at the time of inserting the tube into the tube insertion aperture, the peripheral portion guides the tube. Therefore, the tube can be inserted easily. Furthermore, larger joining area between the tube and the peripheral portion of the tube insertion aperture can be obtained, resulting in enhanced air-tightness therebetween, which in turn enhances the quality and reliability.
  • the header can be suitably used for a heat exchanger such as a condenser and an evaporator for use in a refrigeration system for an automobile air-conditioner.
  • a heat exchanger such as a condenser and an evaporator for use in a refrigeration system for an automobile air-conditioner.

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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)
US10/472,486 2001-03-29 2002-03-28 Header for use in heat exchanger, heat exchanger and method for manufacturing the same Abandoned US20040182558A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/472,486 US20040182558A1 (en) 2001-03-29 2002-03-28 Header for use in heat exchanger, heat exchanger and method for manufacturing the same

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2001095242 2001-03-29
JP2001-95242 2001-03-29
US30269101P 2001-07-05 2001-07-05
US10/472,486 US20040182558A1 (en) 2001-03-29 2002-03-28 Header for use in heat exchanger, heat exchanger and method for manufacturing the same
PCT/JP2002/003154 WO2002079708A2 (en) 2001-03-29 2002-03-28 Header for use in heat exchangers, heat exchanger and method for manufacturing the same

Publications (1)

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US20040182558A1 true US20040182558A1 (en) 2004-09-23

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US10/472,486 Abandoned US20040182558A1 (en) 2001-03-29 2002-03-28 Header for use in heat exchanger, heat exchanger and method for manufacturing the same

Country Status (7)

Country Link
US (1) US20040182558A1 (cs)
EP (1) EP1485665A4 (cs)
KR (1) KR20040005902A (cs)
CN (1) CN1599859A (cs)
CZ (1) CZ20032624A3 (cs)
TW (1) TW534974B (cs)
WO (1) WO2002079708A2 (cs)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050230093A1 (en) * 2002-11-27 2005-10-20 Uwe Forster Heat exchanger
US20060162919A1 (en) * 2002-08-09 2006-07-27 Showa Denko K.K. Flat tube and process for producing heat exchanger with use of the flat tube
EP2098313A1 (en) 2008-03-06 2009-09-09 Delphi Technologies, Inc. A heat exchanger manifold and method of forming a heat exchanger manifold
US20100025027A1 (en) * 2008-07-29 2010-02-04 Daniel Borst Heat exchanger with collecting tube, collecting tube, and method for producing the same
US20110011376A1 (en) * 2007-08-30 2011-01-20 Meshenky Steven P Exhaust gas recirculation system and method of operating the same
US20120304726A1 (en) * 2011-05-30 2012-12-06 Honda Motor Co., Ltd. Method of manufacturing pulley cover in continuously variable transmission
CN103769468A (zh) * 2012-10-19 2014-05-07 张荣伟 一种制作散热接插头的方法及其制品
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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1530701B1 (de) * 2002-07-05 2016-04-13 MAHLE Behr GmbH & Co. KG Wärmeübertrager, insbesondere verdampfer für eine fahrzeugklimaanlage
EP1447636A1 (en) * 2003-02-11 2004-08-18 Delphi Technologies, Inc. Heat exchanger
ITMC20030037A1 (it) * 2003-04-08 2004-10-09 Laminox Srl Procedimento per la produzione di radiatori ad acqua calda da bagno
KR100722693B1 (ko) * 2005-02-25 2007-05-29 한국델파이주식회사 열 교환기
KR100644135B1 (ko) * 2005-11-14 2006-11-10 주식회사 두원공조 열교환기의 헤더 파이프
KR101304865B1 (ko) * 2007-02-14 2013-09-11 한라비스테온공조 주식회사 증발기
KR101243666B1 (ko) * 2007-02-14 2013-03-14 한라공조주식회사 증발기
KR101039980B1 (ko) * 2008-08-28 2011-06-09 주식회사 두원공조 2열의 튜브를 구비하는 열교환기의 헤더
WO2015025365A1 (ja) * 2013-08-20 2015-02-26 三菱電機株式会社 熱交換器、空調機及び冷凍サイクル装置
CN103486774A (zh) * 2013-09-24 2014-01-01 浙江基力思汽车空调有限公司 一种卷压式集管平行流蒸发器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
US6259359B1 (en) * 1999-04-06 2001-07-10 Yazaki Corporation Rear monitoring system for vehicle
US6272881B1 (en) * 1998-04-03 2001-08-14 Denso Corporation Refrigerant evaporator and manufacturing method for the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03121370U (cs) * 1990-03-24 1991-12-12
JPH0526592A (ja) * 1991-07-19 1993-02-02 Matsushita Refrig Co Ltd 冷媒分流器とその製造方法
JPH0579790A (ja) * 1991-09-18 1993-03-30 Zexel Corp 熱交換器
FR2752930B1 (fr) * 1996-08-29 1998-11-13 Valeo Thermique Moteur Sa Collecteur a collets, a base d'aluminium, pour echangeur de chaleur, notamment de vehicule automobile
JP3829499B2 (ja) * 1998-09-29 2006-10-04 株式会社デンソー 熱交換器
DE19920102B4 (de) * 1999-05-03 2009-01-02 Behr Gmbh & Co. Kg Mehrkammerrohr und Wärmeübertrageranordnung für ein Kraftfahrzeug
US6449979B1 (en) 1999-07-02 2002-09-17 Denso Corporation Refrigerant evaporator with refrigerant distribution

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
US6272881B1 (en) * 1998-04-03 2001-08-14 Denso Corporation Refrigerant evaporator and manufacturing method for the same
US6259359B1 (en) * 1999-04-06 2001-07-10 Yazaki Corporation Rear monitoring system for vehicle

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162919A1 (en) * 2002-08-09 2006-07-27 Showa Denko K.K. Flat tube and process for producing heat exchanger with use of the flat tube
US7121332B2 (en) * 2002-11-27 2006-10-17 Behr Gmbh & Co. Kg Heat exchanger
US20050230093A1 (en) * 2002-11-27 2005-10-20 Uwe Forster Heat exchanger
US8671921B2 (en) * 2007-08-30 2014-03-18 Modine Manufacturing Company Exhaust gas recirculation system and method of operating the same
US20110011376A1 (en) * 2007-08-30 2011-01-20 Meshenky Steven P Exhaust gas recirculation system and method of operating the same
EP2098313A1 (en) 2008-03-06 2009-09-09 Delphi Technologies, Inc. A heat exchanger manifold and method of forming a heat exchanger manifold
US20100025027A1 (en) * 2008-07-29 2010-02-04 Daniel Borst Heat exchanger with collecting tube, collecting tube, and method for producing the same
US8474517B2 (en) * 2008-07-29 2013-07-02 Modine Manufacturing Company Heat exchanger with collecting tube, collecting tube, and method for producing the same
US20120304726A1 (en) * 2011-05-30 2012-12-06 Honda Motor Co., Ltd. Method of manufacturing pulley cover in continuously variable transmission
US9021851B2 (en) * 2011-05-30 2015-05-05 Honda Motor Co., Ltd. Method of manufacturing pulley cover in continuously variable transmission
CN103769468A (zh) * 2012-10-19 2014-05-07 张荣伟 一种制作散热接插头的方法及其制品
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

Also Published As

Publication number Publication date
EP1485665A4 (en) 2008-06-25
WO2002079708A2 (en) 2002-10-10
WO2002079708A3 (en) 2004-10-07
TW534974B (en) 2003-06-01
CZ20032624A3 (cs) 2004-08-18
EP1485665A2 (en) 2004-12-15
KR20040005902A (ko) 2004-01-16
CN1599859A (zh) 2005-03-23

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