US20060054313A1 - Heat exchanger, especially gas cooler - Google Patents

Heat exchanger, especially gas cooler Download PDF

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Publication number
US20060054313A1
US20060054313A1 US10/542,711 US54271105A US2006054313A1 US 20060054313 A1 US20060054313 A1 US 20060054313A1 US 54271105 A US54271105 A US 54271105A US 2006054313 A1 US2006054313 A1 US 2006054313A1
Authority
US
United States
Prior art keywords
heat exchanger
longitudinal
collecting box
tongues
dividing wall
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
US10/542,711
Other languages
English (en)
Inventor
Uwe Forster
Kurt Molt
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Assigned to BEHR GMBH & CO. KG reassignment BEHR GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOLT, KURT, FORSTER, UWE
Publication of US20060054313A1 publication Critical patent/US20060054313A1/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
    • 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
    • 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
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0073—Gas coolers

Definitions

  • the invention relates to a heat exchanger, especially a gas cooler for a CO 2 coolant circuit of a motor vehicle air conditioning system, according to the preamble of patent claim 1 .
  • Heat exchangers for air conditioning systems with R134a as the coolant are composed of a heat transfer network with flat tubes and collecting tubes which are arranged on each side of the network and have a circular cross section or some other cross section.
  • Other heat exchangers for air conditioning systems for example two-row evaporators according to DE-A 198 26 881 by the applicant, have a collecting box which is divided into two longitudinal chambers and which is manufactured from a prepared sheet metal plate by bending the edge regions of the sheet metal plate. In this way, a central, double-layered longitudinal dividing wall is obtained and is secured in cutouts in the flat bottom of a collecting box by means of tongues.
  • the object of the present invention is therefore to improve a heat exchanger of the type mentioned at the beginning to the effect that the collecting box has a high degree of strength with a low weight and can be manufactured cost-effectively.
  • the collecting box is formed in one piece and is bent out of a sheet metal strip in such a way that two longitudinal ducts are produced which are, however, fluidically connected, in contrast to this prior art, only to one row of flat tubes.
  • This design of the collecting box permits an approximately circular cross section and thus a pressure-resistant collecting box.
  • the double-layered longitudinal dividing wall is secured and anchored in a central region of the sheet metal strip by means of tongues, which facilitate fabrication and increases the strength.
  • the tongues for securing the longitudinal dividing wall may be arranged either on the side facing the flat tubes or on the side facing away from the flat tubes. This increases the configuration possibilities of the heat exchanger.
  • notches in which the flat tube ends engage are formed in the longitudinal dividing wall, in the region of the flat tube ends which project into the longitudinal ducts.
  • the flat tubes can be pushed into the collecting box by a relative distance, approximately as far as the center, and formed at a maximum depth (the depth of the flat tube is measured in the direction of air flow).
  • the collecting box is deeper than the flat tube only to an insignificant degree. This advantageously provides space for shaped portions or passages.
  • gaps which may be formed, for example, in a U shape or be arranged only to the side of the flat tube or above it, are left between the notches and the flat tube ends. It is advantageous here if the notches serve simultaneously as a stop for the flat tubes when the latter are pushed into the collecting box through the slot-shaped openings. This results in precise positioning for the flat tubes in the collecting box.
  • the gaps permit pressure and flow to be equalized between the two longitudinal ducts which are arranged one next to the other.
  • the region of the collecting box in which the cutouts are arranged with the tongues can be stepped back somewhat toward the interior, i.e. in the direction of the longitudinal dividing wall, as a result of which a certain degree of “cutting to size” of the cross section of the collecting box is carried out. This ensures that the cross sections of the longitudinal ducts are approximated even more, i.e. beyond 270 degrees circumference, to a circular cross section which then fits the strength and the weight.
  • the cross sections of the two longitudinal ducts may also be advantageous to form the cross sections of the two longitudinal ducts so that they are not the same but rather different, and at the same time the dividing wall can be positioned off-center, i.e. asymmetrically.
  • An essential feature for the configuration of the collecting box is that the tongues are arranged approximately at right angles to the connecting strip with the cutouts in order to bring about an optimum tie rod effect.
  • FIG. 1 is a perspective partial view of a gas cooler
  • FIG. 2 shows a section through the gas cooler according to FIG. 1 ,
  • FIG. 3 shows a section along the line III-III in FIG. 2 .
  • FIG. 4 shows a second exemplary embodiment of a gas cooler
  • FIG. 5 shows a section through the gas cooler according to FIG. 4 .
  • FIG. 6 shows a section along the line VI-VI in FIG. 5 .
  • FIG. 7 shows a third exemplary embodiment of a gas cooler in section.
  • FIG. 1 shows a detail of a gas cooler 1 with a collecting box 2 and flat tubes 3 which open with their flat tube ends 3 a into the collecting box 2 and are accommodated in slot-shaped openings 4 . Corrugated ribs for enlarging the air-side heat transfer face are provided between the flat tubes 3 , and are not illustrated.
  • the gas cooler 1 is suitable in particular for use in a coolant circuit with CO 2 as a coolant of a motor vehicle air conditioning system but is not restricted to this application. Gaseous CO 2 flows through the gas cooler on the primary side, i.e.
  • said gas cooler has the function of cooling the CO 2 gas from a temperature of approximately 150 degrees Celsius to 50 degrees Celsius.
  • the pressure which occurs in this context is approximately ten times that of conventional condensers in a circuit with the coolant R134a.
  • FIG. 2 shows the gas cooler 1 according to FIG. 1 in a section, the construction of the collecting box 2 clearly being in one piece.
  • Said collecting box 2 has two longitudinal chambers 5 , 6 which are divided from one another by a double longitudinal dividing wall 7 .
  • the collecting box 2 is manufactured from a sheet metal plate or a sheet metal strip 8 which has external edge strips or longitudinal edges 9 , 10 which are provided with tongues 11 , 12 . Cutouts 13 are arranged in the center of the sheet metal strip 8 in a way which corresponds to the arrangement of the tongues 11 , 12 .
  • the collecting box 2 is manufactured from the sheet metal strip 8 which has been prepared, i.e. cut to size and punched out, in such a way that the sides with the longitudinal edges 9 , 10 are bent over to form approximately cylindrical ducts 5 , 6 and that the longitudinal edges 9 , 10 are moved back to the center, approximately perpendicularly to a central connecting region 14 where they are plugged into the cutouts 13 by means of the tongues 11 , 12 . As a result the longitudinal edges 9 , 10 are secured and the collecting box 2 is ready for the soldering process.
  • the flat tubes 3 are plugged by their flat tube ends 3 a into the openings 4 and project with their upper edge 3 b approximately halfway into the free cross section of the longitudinal ducts 5 , 6 . Since the cross section of the longitudinal ducts 5 , 6 is at its maximum width here, the cross section which tapers after this produces a stop for the flat tubes 3 .
  • FIG. 3 shows a section through the gas cooler 1 in the plane III-III in FIG. 2 .
  • This section through the longitudinal duct 5 shows the dividing wall 7 which has U-shaped notches 15 in the region of the flat tube ends 3 a .
  • a gap 16 which clears a throughflow cross section between the two longitudinal ducts 5 , 6 is left between the contour of the flat tube ends 3 a and the contour of the notch 15 .
  • the coolant also to emerge in the center of the flat tubes ends 3 a , and, on the other hand, coolant can flow from one longitudinal duct 5 into the other longitudinal duct 6 and vice versa so that pressure equalization can take place between the two longitudinal ducts.
  • the notches 15 and the gap shape 16 are indicated only in exemplary fashion in the drawing, and the shape of the gap can also be modified in such a way that there is a gap only above the flat tube ends, i.e. above the upper edge 3 b , or only to the side of the flat tube ends 3 a . In the latter case, the upper edge 3 b of the flat tube would abut against the notch in the dividing wall 7 , which would result in a stop.
  • the tongues 11 , 12 protrude above the outer wall of the collecting box 2 and are each arranged approximately centrally between two flat tubes 3 . However, it is also possible to bridge one or more distances between flat tubes and to arrange the tongues 11 , 12 and the cutouts 13 at any desired distances respectively between two flat tubes.
  • FIG. 4 shows a further exemplary embodiment of a gas cooler 20 with a collecting box 21 and flat tubes 22 .
  • Tongues 23 and cutouts 24 are arranged here on the upper side of the collecting box 21 , i.e. on the side facing away from the flat tubes 22 .
  • FIG. 5 shows this gas cooler 20 in section.
  • the collecting box 20 is in principle of the same design as in the exemplary embodiment according to FIG. 2 but mirror inverted.
  • the collecting box 21 has two longitudinal chambers 21 a , 21 b which are divided from one another by a double longitudinal dividing wall 25 .
  • Flat tubes 22 are pushed into the collecting box 21 by an opening (not shown here) so that with their flat tube ends 22 a they fill approximately half of the longitudinal ducts 21 a , 21 b .
  • the upper edge 22 b therefore lies at the height of the maximum width of the internal cross section.
  • the flat tube 22 has a continuous depth t which extends into the collecting box 21 .
  • FIG. 6 shows a section in the plane VI-VI through the longitudinal ducts 21 a in FIG. 5 .
  • the flat tubes 22 are inserted into collecting boxes 21 through corresponding openings 26 , with the openings 26 extending over the full depth t of the flat tube 22 .
  • Approximately circular notches 27 are arranged above the upper edge 22 b of the flat tube ends 22 a , said notches 27 merging with the rectangular cross section corresponding to the flat tube cross section and thus permitting the flat tube ends 22 a to be inserted.
  • An approximately circular gap 28 which forms a passage cross section between the two longitudinal chambers 21 a , 21 b , is left above the upper edge 22 b of the flat tube ends 22 a . No gap is left directly next to the flat tube ends 22 a .
  • the tongues 23 and also the cutouts are also respectively arranged here between the flat tubes 22 .
  • FIG. 7 shows a third exemplary embodiment of a gas cooler 30 with a collecting box 31 and flat tubes 32 .
  • a double longitudinal dividing wall 33 is anchored with tongues 34 in a central connecting region 35 , with this connecting region 35 being stepped back somewhat toward the inside, i.e. offset inward by an amount x with respect to a lower boundary line 1 of the collecting box 31 .
  • the cross sections of the longitudinal ducts 36 , 37 are approximated to the circular shape beyond the three-quarter circle (270 degrees). Nevertheless, the set-back central connecting region 35 and the double longitudinal dividing wall 33 form a right angle. This cross sectional shape thus provides a higher degree of compressive strength for the collecting box 31 .

Landscapes

  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US10/542,711 2003-01-21 2003-11-07 Heat exchanger, especially gas cooler Abandoned US20060054313A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE103-02-412.3 2003-01-21
DE10302412A DE10302412A1 (de) 2003-01-21 2003-01-21 Wärmeübertrager, insbesondere Gaskühler
PCT/EP2003/012467 WO2004065882A1 (fr) 2003-01-21 2003-11-07 Echangeur thermique, notamment refroidisseur de gaz

Publications (1)

Publication Number Publication Date
US20060054313A1 true US20060054313A1 (en) 2006-03-16

Family

ID=32602865

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/542,711 Abandoned US20060054313A1 (en) 2003-01-21 2003-11-07 Heat exchanger, especially gas cooler

Country Status (9)

Country Link
US (1) US20060054313A1 (fr)
EP (1) EP1588115B1 (fr)
JP (1) JP2006513392A (fr)
CN (1) CN100573021C (fr)
AT (1) ATE442565T1 (fr)
AU (1) AU2003303762A1 (fr)
BR (1) BR0318023A (fr)
DE (2) DE10302412A1 (fr)
WO (1) WO2004065882A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090249810A1 (en) * 2008-04-02 2009-10-08 Dirk Neumeister Evaporator
US20100025027A1 (en) * 2008-07-29 2010-02-04 Daniel Borst Heat exchanger with collecting tube, collecting tube, and method for producing the same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5081521B2 (ja) * 2006-08-22 2012-11-28 カルソニックカンセイ株式会社 車両用空調装置
DE102007035111A1 (de) * 2007-07-20 2009-01-29 Visteon Global Technologies Inc., Van Buren Vorratstank für Hochdruckkältemittel-Wärmeübertrager und Verfahren zur Herstellung eines Vorratstanks
DE102009013280A1 (de) 2009-03-14 2010-09-16 Modine Manufacturing Co., Racine Wärmetauscher mit Sammelkasten
DE102009023954A1 (de) * 2009-06-04 2010-12-09 Behr Gmbh & Co. Kg Sammelrohr für einen Kondensator
DE102009033696A1 (de) 2009-07-17 2011-01-20 Modine Manufacturing Co., Racine Herstellungsverfahren für Sammelkästen
CN101995116B (zh) * 2009-08-20 2014-07-30 贝洱两合公司 蒸发器
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
CN107255373A (zh) * 2016-12-19 2017-10-17 浙江银轮机械股份有限公司 一种空调设备用热交换器及其集流器
CN111256392B (zh) * 2018-11-30 2023-03-28 浙江三花汽车零部件有限公司 一种换热器
WO2020108513A1 (fr) 2018-11-30 2020-06-04 浙江三花汽车零部件有限公司 Dispositif d'échange de chaleur

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770240A (en) * 1985-05-13 1988-09-13 Stark Manufacturing, Inc. Manifold for a heat exchanger
US5172761A (en) * 1992-05-15 1992-12-22 General Motors Corporation Heat exchanger tank and header
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
US5190101A (en) * 1991-12-16 1993-03-02 Ford Motor Company Heat exchanger manifold
US5761808A (en) * 1996-10-30 1998-06-09 Ford Motor Company Method of making a heat exchanger
US6155340A (en) * 1997-05-12 2000-12-05 Norsk Hydro Heat exchanger
US6216776B1 (en) * 1998-02-16 2001-04-17 Denso Corporation Heat exchanger
US6216777B1 (en) * 2000-01-27 2001-04-17 Visteon Global Technologies, Inc. Manifold for a heat exchanger and method of making same
US6260271B1 (en) * 1998-05-06 2001-07-17 Toshiomi Hayashi Tubular body having integral branch tubes and method for producing the same
US20020066553A1 (en) * 2000-11-07 2002-06-06 Ewald Fischer Heat exchanger and method for producing a heat exchanger

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07318288A (ja) * 1994-05-12 1995-12-08 Zexel Corp 熱交換器のタンク仕切構造
DE19826881B4 (de) * 1998-06-17 2008-01-03 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Verdampfer
US6736203B2 (en) * 2001-04-30 2004-05-18 Visteon Global Technologies, Inc. Heat exchanger header and tank unit
DE10132484A1 (de) * 2001-07-05 2003-01-23 Behr Gmbh & Co Wärmetauscher und Verfahren zu dessen Herstellung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770240A (en) * 1985-05-13 1988-09-13 Stark Manufacturing, Inc. Manifold for a heat exchanger
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
US5190101A (en) * 1991-12-16 1993-03-02 Ford Motor Company Heat exchanger manifold
US5172761A (en) * 1992-05-15 1992-12-22 General Motors Corporation Heat exchanger tank and header
US5761808A (en) * 1996-10-30 1998-06-09 Ford Motor Company Method of making a heat exchanger
US6155340A (en) * 1997-05-12 2000-12-05 Norsk Hydro Heat exchanger
US6216776B1 (en) * 1998-02-16 2001-04-17 Denso Corporation Heat exchanger
US6260271B1 (en) * 1998-05-06 2001-07-17 Toshiomi Hayashi Tubular body having integral branch tubes and method for producing the same
US6216777B1 (en) * 2000-01-27 2001-04-17 Visteon Global Technologies, Inc. Manifold for a heat exchanger and method of making same
US20020066553A1 (en) * 2000-11-07 2002-06-06 Ewald Fischer Heat exchanger and method for producing a heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090249810A1 (en) * 2008-04-02 2009-10-08 Dirk Neumeister Evaporator
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

Also Published As

Publication number Publication date
BR0318023A (pt) 2005-12-06
CN100573021C (zh) 2009-12-23
JP2006513392A (ja) 2006-04-20
ATE442565T1 (de) 2009-09-15
DE50311904D1 (de) 2009-10-22
EP1588115A1 (fr) 2005-10-26
WO2004065882A1 (fr) 2004-08-05
AU2003303762A1 (en) 2004-08-13
EP1588115B1 (fr) 2009-09-09
CN1738999A (zh) 2006-02-22
DE10302412A1 (de) 2004-07-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BEHR GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FORSTER, UWE;MOLT, KURT;REEL/FRAME:017190/0357;SIGNING DATES FROM 20050831 TO 20050905

STCB Information on status: application discontinuation

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