EP1588115B1 - Echangeur thermique, notamment refroidisseur de gaz - Google Patents

Echangeur thermique, notamment refroidisseur de gaz Download PDF

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Publication number
EP1588115B1
EP1588115B1 EP03815365A EP03815365A EP1588115B1 EP 1588115 B1 EP1588115 B1 EP 1588115B1 EP 03815365 A EP03815365 A EP 03815365A EP 03815365 A EP03815365 A EP 03815365A EP 1588115 B1 EP1588115 B1 EP 1588115B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
longitudinal
collecting box
tongues
flat 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.)
Expired - Lifetime
Application number
EP03815365A
Other languages
German (de)
English (en)
Other versions
EP1588115A1 (fr
Inventor
Uwe FÖRSTER
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
Publication of EP1588115A1 publication Critical patent/EP1588115A1/fr
Application granted granted Critical
Publication of EP1588115B1 publication Critical patent/EP1588115B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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, in particular a gas cooler for a CO2 refrigerant circuit of a motor vehicle air conditioning system, according to the preamble of claim 1.
  • Heat exchanger for air conditioners with R134a as refrigerant eg. B. capacitors consist of a heat transfer network with flat tubes and both sides of the network arranged collecting pipes with circular or other cross-section.
  • Other heat exchangers for air conditioning z. B. double-row evaporator after the DE-A 198 26 881 the applicant have a subdivided into two Lzanskammem collecting box, which is made of a prepared sheet metal blank by bending over the edge regions of the sheet metal blank. This gives a central, double-layered longitudinal partition, which is fixed by means of tongues in recesses of a flat header tank bottom.
  • each longitudinal chamber communicates with a row of flat tubes.
  • CO2 R744
  • a manifold consists of four juxtaposed circular flow channels. The production of such an extruded manifold is expensive because of the tools required for it.
  • the collection box is integrally formed and is bent from a sheet metal strip so that there are two longitudinal channels, however, - are different from this prior art - only with a flat tube row in fluid communication. Due to this design of the collecting tank, an approximately circular cross-section and thus a pressure-resistant collection box is made possible.
  • the two-ply longitudinal partition is fixed and anchored by means of tongues in a central region of the metal strip, which facilitates the manufacture and increases the strength.
  • the tongues for fixing the longitudinal dividing wall can be arranged either on the side facing the flat tubes or facing away. This increases the Krasmögtichkeiten the heat exchanger.
  • notches are arranged in the longitudinal partition wall in the region of the flat tube ends, which project into the longitudinal channels, in which engage the flat tube ends.
  • the flat tubes can be pushed into the collecting box relatively far - approximately to the middle - and formed with a maximum depth (the depth of the flat tube is measured in the direction of air flow).
  • the collection box is thus only insignificantly lower than that Flat tube. This can be advantageously created space for transformations or passages.
  • gaps are left between the notches and the flat tube ends, which may for example be U-shaped or arranged only laterally or above the flat tube. It is advantageous if the notches simultaneously serve as a stop for the flat tubes when they are pushed through the slot-shaped openings in the collection box. This results in a precise positioning of the flat tubes in the collecting box. Through the column to reach a pressure and flow compensation between the two adjacent longitudinal channels.
  • the region of the collecting tank, in which the recesses are arranged with the tongues slightly inwards, d. H. be retracted in the direction of the longitudinal partition, resulting in a certain "sidecut" for the cross section of the header. This ensures that the cross sections of the longitudinal channels even more, d. H. beyond a circumference of 270 degrees to a circular cross-section, which benefits the strength and weight.
  • Fig. 1 shows a section of a gas cooler 1 with a collecting box 2 and flat tubes 3, which open with their flat tube ends 3a in the collecting box 2 and are received in slot-shaped openings 4. Between the flat tubes 3 are - which is not shown - corrugated fins provided to increase the air side heat exchange surface.
  • the gas cooler 1 is particularly suitable for use in a refrigerant circuit with CO2 as the refrigerant of a motor vehicle air conditioning system, but not limited to this application.
  • the gas cooler is the primary side, ie flows through in the collecting tanks and the flat tubes of gaseous CO2 at a pressure of about 120 bar and the secondary side acted upon by ambient air; It has the task of cooling the CO2 gas from a temperature of approx. 150 degrees Celsius to 50 degrees Celsius. The resulting pressure is about ten times that of conventional condensers in a circuit with the refrigerant R134a.
  • Fig. 2 shows the gas cooler 1 according to Fig. 1 in a section, wherein it is clear that the collecting box 2 is integrally formed. He has two Lzanskammem 5, 6, which are separated by a double longitudinal partition 7 from each other.
  • the collection box 2 is made of a sheet metal plate or a sheet metal strip 8, which outer edge strips or longitudinal edges 9, 10, which are provided with tongues 11, 12. In the middle of the sheet metal tire 8, 12 recesses 13 are arranged according to the arrangement of the tongues 11 ,.
  • the collecting box 2 is made from the prepared, ie cut and punched sheet metal strip 8 in such a way that the sides with the longitudinal edges 9, 10 bent to approximately cylindrical channels 5, 6 and that the longitudinal edges 9, 10 centrally and approximately perpendicular to a central Connection region 14 are returned, where they are inserted with the tongues 11, 12 in the recesses 13.
  • the flat tubes 3 are inserted with their flat tube ends 3a in the openings 4 and protrude with its upper edge 3b about halfway in the free cross section of the longitudinal channels 5, 6 in. Since the cross section of the longitudinal channels 5, 6 here its has maximum width, resulting from the narrowing thereafter cross section, a stop for the flat tubes.
  • Fig. 3 shows a section through the gas cooler 1 in the plane III-III in Fig. 2
  • This section through the longitudinal channel 5 shows the partition 7, which has U-shaped notches 15 in the region of the flat tube ends 3a.
  • a gap 16 is left, which releases a flow cross-section between the two longitudinal channels 5, 6.
  • the refrigerant can also escape through this gap 16 in the middle of the flat tube ends 3a, and on the other hand, refrigerant can flow from one longitudinal channel 5 into the other longitudinal channel 6 and vice versa, so that pressure equalization can take place between the two longitudinal channels.
  • the notches 15 and the gap form 16 are given by way of example only - the shape of the gap can also be modified in such a way that only above the flat tube ends, ie above the upper edge 3b, there is a gap or only laterally of the flat tube ends 3a. In the latter case, the Flachrohroberkante 3b would abut the notch in the partition wall 7, which would result in a stop.
  • the tongues 11, 12 protrude beyond the outer wall of the collecting tank 2 and are each arranged approximately centrally between two flat tubes 3. However, it is also possible to skip one or more Flachrohrabments and to arrange the tongues 11, 12 and the recesses 13 at any intervals between two flat tubes.
  • Fig. 4 shows a further embodiment of a gas cooler 20 with a collecting box 21 and flat tubes 22.
  • tongues 23 and recesses 24 are here on the top of the collecting box 21, that is arranged on the flat tubes 22 side facing away.
  • Fig. 5 shows this gas cooler 20 in section.
  • the collecting box 21 is basically the same as in the embodiment according to Fig. 2 , but mirror-inverted.
  • the collecting box 21 has two longitudinal chambers 21a, 21b, which are divided by a double longitudinal partition wall 25 from each other.
  • the flat tubes 22 are inserted through a not visible here opening in the collecting box 21 so that they fill with their flat tube ends 22a about half of the longitudinal channels 21 a, 21 b.
  • the upper edge 22b is thus at the height of the maximum width of the inner cross sections.
  • the Flat tube 22. Skin has a continuous depth t, which extends into the collection box 21.
  • Fig. 6 shows a section in the plane VI-VI through the longitudinal channel 21a in Fig. 5 ,
  • the flat tubes 22 are inserted through corresponding openings 26 in the collection box 21, wherein the openings 26 extend over the full depth t of the flat tube 22.
  • approximately circular notches 27 are arranged, which transition into a rectangular cross section corresponding to the flat tube cross section and thus allow the insertion of the flat tube ends 22a.
  • an approximately circular gap 28 is left, which forms a passage cross section between the two longitudinal chambers 21a, 21b.
  • no gap is left.
  • the tongues 23 and also the not visible recesses here are each arranged between the flat tubes 22.
  • Fig. 7 shows a third embodiment of a gas cooler 30 with a collecting box 31 and flat tubes 32.
  • a double longitudinal partition wall 33 is anchored with tongues 34 in a central connecting portion 35, said connecting portion 35 is retracted slightly inward, ie by an amount x relative to a lower boundary line I of the header box 31 offset inwards.
  • the cross sections of the longitudinal channels 36, 37 are approximated to the circular shape beyond the three-quarter circle (270 degrees). Nevertheless, the offset middle connecting region 35 and the double longitudinal dividing wall 33 form a right angle. This cross-sectional shape thus offers a higher 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)

Claims (14)

  1. Echangeur de chaleur, en particulier refroidisseur de gaz pour un circuit de fluide frigorigène CO2 d'un système de climatisation d'un véhicule automobile, comprenant au moins un bac collecteur (2) qui est subdivisé en deux conduits longitudinaux (5, 6), par une paroi de séparation longitudinale (7), et une rangée de tubes plats (3) comportant des extrémités de tubes plats (3a) qui sont logées dans des ouvertures (4) situées dans le bac collecteur (2) et sont en communication fluidique avec les conduits longitudinaux (5, 6),
    caractérisé en ce que le bac collecteur (2), comprenant les conduits longitudinaux (5, 6), est recourbé à partir d'une bande de tôle préparée (8) comportant des bords longitudinaux (9, 10) présentant des languettes (11, 12) et à partir d'une zone de jonction centrale (14) présentant des évidements (13), où les bords longitudinaux (9, 10) forment la paroi de séparation longitudinale (7) et sont ancrés dans les évidements (13), par les languettes (11, 12).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les languettes (11, 12) et les évidements (13) sont disposés sur le côté du bac collecteur (2) tourné vers les tubes plats (3).
  3. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les languettes (23) et les évidements (24) sont disposés sur le côté du bac collecteur (21) placé à l'opposé des tubes plats (22).
  4. Echangeur de chaleur selon la revendication 1, 2 ou 3, caractérisé en ce que la paroi de séparation longitudinale (7, 25) présente des encoches (15, 27) dans lesquelles s'engagent les extrémités de tubes plats (3a, 22a).
  5. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que le bac collecteur ou des parties du bac collecteur est ou sont doté(es) de déformations, de parties saillantes et / ou de nervurages correspondants qui servent de butées pour les tubes.
  6. Echangeur de chaleur selon la revendication 4 ou 5, caractérisé en ce que des intervalles (16, 28) sont laissés entre les encoches (15, 27) et les extrémités de tubes plats (3a, 22a).
  7. Echangeur de chaleur selon la revendication 6, caractérisé en ce que les intervalles (16) sont configurés en forme de U.
  8. Echangeur de chaleur selon la revendication 6, caractérisé en ce que les intervalles sont disposés latéralement, et les encoches forment une butée pour les extrémités des tubes plats.
  9. Echangeur de chaleur selon la revendication 6, caractérisé en ce que des intervalles (28) sont disposés au-dessus et / ou au-dessous des extrémités de tubes plats (22a, 22b).
  10. Echangeur de chaleur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les languettes (11, 12 ; 23) et les évidements (13, 24) sont disposés entre le énième tube plat (3, 22), n étant égal à 1, 2, 3, 4, 5, ...
  11. Echangeur de chaleur selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les sections des conduits longitudinaux (5, 6 ; 23, 24 ; 36, 37) sont configurées de façon presque circulaire, en particulier sur une plage circonférentielle d'au moins 270 degrés.
  12. Echangeur de chaleur selon la revendication 11, caractérisé en ce que la zone de jonction centrale (35) logeant les languettes (34) est rentrée ou bombée vers l'extérieur, d'une valeur x, en direction de la paroi de séparation longitudinale (39).
  13. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les sections des conduits longitudinaux sont variables concernant la forme et / ou la taille.
  14. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que là paroi de séparation longitudinale comporte au moins une ouverture ou une encoche ou une ouverture de trop-plein.
EP03815365A 2003-01-21 2003-11-07 Echangeur thermique, notamment refroidisseur de gaz Expired - Lifetime EP1588115B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10302412A DE10302412A1 (de) 2003-01-21 2003-01-21 Wärmeübertrager, insbesondere Gaskühler
DE10302412 2003-01-21
PCT/EP2003/012467 WO2004065882A1 (fr) 2003-01-21 2003-11-07 Echangeur thermique, notamment refroidisseur de gaz

Publications (2)

Publication Number Publication Date
EP1588115A1 EP1588115A1 (fr) 2005-10-26
EP1588115B1 true EP1588115B1 (fr) 2009-09-09

Family

ID=32602865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03815365A Expired - Lifetime EP1588115B1 (fr) 2003-01-21 2003-11-07 Echangeur thermique, notamment refroidisseur de gaz

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)

Families Citing this family (12)

* 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
EP2107328B1 (fr) * 2008-04-02 2012-07-11 Behr GmbH & Co. KG Evaporateur
DE102008035358A1 (de) 2008-07-29 2010-02-04 Modine Manufacturing Co., Racine Wärmetauscher mit Sammelrohr und Sammelrohr sowie Herstellungsverfahren dafür
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
US11713930B2 (en) 2018-11-30 2023-08-01 Zhejiang Sanhua Automotive Components Co., Ltd. Flat tube heat exchanger with a separator
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

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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
JPH07318288A (ja) * 1994-05-12 1995-12-08 Zexel Corp 熱交換器のタンク仕切構造
US5761808A (en) * 1996-10-30 1998-06-09 Ford Motor Company Method of making a heat exchanger
EP0981715B1 (fr) * 1997-05-12 2001-10-04 Norsk Hydro Asa Echangeur de chaleur
US6216776B1 (en) * 1998-02-16 2001-04-17 Denso Corporation Heat exchanger
JP3670135B2 (ja) * 1998-05-06 2005-07-13 俊臣 林 枝管を一体に備えた管状体の製造方法
DE19826881B4 (de) * 1998-06-17 2008-01-03 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Verdampfer
US6216777B1 (en) * 2000-01-27 2001-04-17 Visteon Global Technologies, Inc. Manifold for a heat exchanger and method of making same
DE10056074B4 (de) * 2000-11-07 2017-03-23 Mahle International Gmbh Wärmeübertrager
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

Also Published As

Publication number Publication date
US20060054313A1 (en) 2006-03-16
EP1588115A1 (fr) 2005-10-26
AU2003303762A1 (en) 2004-08-13
JP2006513392A (ja) 2006-04-20
DE50311904D1 (de) 2009-10-22
BR0318023A (pt) 2005-12-06
ATE442565T1 (de) 2009-09-15
DE10302412A1 (de) 2004-07-29
CN1738999A (zh) 2006-02-22
WO2004065882A1 (fr) 2004-08-05
CN100573021C (zh) 2009-12-23

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