WO2008101755A1 - Échangeur de chaleur amélioré pour un véhicule - Google Patents

Échangeur de chaleur amélioré pour un véhicule Download PDF

Info

Publication number
WO2008101755A1
WO2008101755A1 PCT/EP2008/050561 EP2008050561W WO2008101755A1 WO 2008101755 A1 WO2008101755 A1 WO 2008101755A1 EP 2008050561 W EP2008050561 W EP 2008050561W WO 2008101755 A1 WO2008101755 A1 WO 2008101755A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
baffle
header
exchanger according
tube end
Prior art date
Application number
PCT/EP2008/050561
Other languages
English (en)
Inventor
Krzysztof Cuber
Boleslaw Kurowski
Grzegorz Kmita
Grzegorz Romanski
Original Assignee
Valeo Autosystemy Sp. Z O. O.
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 Valeo Autosystemy Sp. Z O. O. filed Critical Valeo Autosystemy Sp. Z O. O.
Publication of WO2008101755A1 publication Critical patent/WO2008101755A1/fr

Links

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
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0443—Combination of units extending one beside or one above the other
    • 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
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/0287—Other particular headers or end plates having passages for different heat exchange media

Definitions

  • the invention is concerned with a heat exchanger for an automotive vehicle comprising a beam of tubes received at one end in a header.
  • the header comprises first and second chambers for circulating respective fluids, which are separated by separating means.
  • heat exchangers are known for circulating a first fluid at a relatively high temperature in a first chamber, and a second fluid at a relatively low temperature in a second chamber.
  • Those exchangers can particularly be radiators, and are affected by various and specific problems.
  • US 6 942 014 teaches a heat exchanger in which a double separating wall member is introduced in a header for defining two chambers.
  • the two chambers and their respective associated tubes define two compartments. This design has shown reliability flaws of the separation element between the two chambers, as well as mechanicai break problems of this element due to the temperature gradient surrounding it.
  • EP 0 789 213 teaches a heat exchanger in which two separation wall members are introduced in the header, with some tubes connected to the portion of the header comprised between the separation wall members.
  • This solution is expensive and impractical in terms of design and industrialization, and it does not aliow for good performance of the exchanger.
  • US 6 883 600 teaches a similar heat exchanger, in which the design of the baffles is modified to improve their brazeability with the header.
  • the baffles are not simple plate anymore and their edges are folded to have a better contact area with the tank. A part of the tank flange is cut to allow an approach area for introducing the baffles in the tank.
  • This solution is also expensive and impractical in terms of design and industrialization, and it does not allow for good performance of the exchanger.
  • the invention aims at improving the situation.
  • a heat exchanger for an automotive vehicle comprising a beam of tubes received at one end in a header, said header comprising first and second chambers for circulating respective fluids, and said chambers being separated by separating means.
  • said separating means comprise a baffle extending within a tube end received in said header.
  • the separating means consist in the baffle.
  • the baffle is an independent piece (from whatever heat exchanger elements) which first function is to provide a partition wall in the header in order to form two chambers.
  • this baffle is extended from the header to be engaged into one tube or the like so that the in/out flow of the latter is at least partially blocked by the baffle.
  • this exchanger allows for better performance by not having dummy tubes. Moreover, there is no need for particular manufacturing of the header or of the tubes, since the baffle can be adapted on regular heat exchangers. This allows for higher productivity, and lowers mounting times and production and design costs.
  • the baffle portion extending within said tube end reinforces the tube portion which suffers the most stress, thus insuring high reliability and strength of the exchanger, while insuring good separation of the chambers.
  • the first and second chambers may be arranged to receive respective fluids having respective first and second selected temperature ranges, the second selected temperature range being lower than the first selected temperature range.
  • Said baffle may be disposed within the tube end received in the second chamber which is closest to said first chamber.
  • the baffle may extend into the tube portion outside of said header, which allows for better reinforcement of the receiving tube end.
  • the baffle comprises a main portion to adapt the header and a thinned portion to settle in the tube end in which it is received.
  • the main portion and the thinned portion may be separated by a tapered portion.
  • the tube receiving said baffle has two channels separated by a wall member, and the baffle comprises a cutting to settle in said wall member.
  • the header comprises a cover and a collector having respective shapes
  • the baffle comprises edges accommodating the shape of the cover.
  • the cover may have a U-shaped cross section
  • the edges of said baffle may comprise a rounding for accommodating the corners of the U-shaped cross section. This allows for high reliability of the separation between said chambers.
  • the heat exchanger may be made of aluminium, steel or an aluminium or steel alloy.
  • FIG. 1 shows a general face view of a heat exchanger according to the invention
  • FIG. 2a shows a longitudinal sectional view of details of figure 1 ;
  • FIG. 2b shows cross sectional view of figure 2
  • FIG. 3 shows a plan view of a baffle of figure 1 ;
  • FIG. 4 shows a plan view of detail IV of figure 3.
  • Figure 1 shows a heat exchanger comprising a beam 10, comprised of a number of tubes 12 extending mutually in a substantially parallel manner between which cooling fins 14 are disposed.
  • the tubes 12 discharge at one end into a header 16, and, at another end into a header 18, Headers 16 and 18 have a U-shaped cross section, and extend in a substantially parallel manner.
  • Each of the header 16, 18 comprises a collector 36, 42, respectively.
  • This exchanger that is tubes 12, fins 14 and headers 16 and 18 are made of metal and brazed together.
  • the beam is divided into a part A forming a cooler of a first fluid and comprised of tubes 12a, and a part B forming a cooler of a second fluid and comprising of tubes 12b.
  • Tubes 12a are adapted to be circulated by a first fluid F1 such as water.
  • Tubes 12b are adapted to be circulated by a second fluid F2, for example antifreeze. It will be understood that the two fluids circulating in both parts of the beam wili be cooler by the same flow of air.
  • headers 16 and 18 comprise respective separating means 20 and 22.
  • Separating means 20 divides header 16 into a first chamber 24 for fluid F1 and a second chamber 26 for fluid F2.
  • separating means 22 divide header 18 into a first chamber 28 for fluid F1 and into a second chamber 30 for fluid F2.
  • Fluid F1 enters first chamber 24 by an inlet tube portion 32, circulates in tubes 12a via a parallel flow and reaches second chamber 28 before output by an outlet tube portion 34.
  • Fluid F2 enters second chamber 26 by an inlet tube portion, circulates in tubes 12b via a parallel flow and reaches second chamber 30 before output by an outlet tube portion.
  • Figure 2a shows a longitudinal sectional view of detail Il of figure 1.
  • Header 16 is comprised of a cover 40 and of a collector 36.
  • cover 40 and collector 36 are both made of aluminium and are brazed together. These elements could be made out of another metal, such as steel, or out of an aluminium or steel alloy.
  • first fluid F1 is water
  • second fluid F2 is antifreeze in this embodiment, the former having a much higher temperature than the latter.
  • Fluids F1 and F2 could also be identical (that is water or antifreeze for both chambers 24 and 26), but they could have different temperatures due to the fact that they could originate from different parts of the cooling circuit of the automotive vehicle. As a new embodiment not shown in the appended drawings, it is possible to provide counter flow fluids, i.e. that inlet F1 is set on the opposite side than inlet F2.
  • Collector 36 has a plurality of openings 44 which receive tubes 12.
  • Separating means 20 are realized as a baffle which extends partially within a tube, In an upper portion 50, baffle 20 fills the whole section comprised between cover 40 and collector 36, and effectively separates header 16 into chambers 24 and 26.
  • baffle 20 extends through a tube until a portion of this tube that is lower than the lower part of header 16.
  • baffle 20 constitutes a reinforcement of the tube in which it is received in its small radius. This way, the tube receiving baffle 20 is effectively reinforced to resist the temperature gradient around it
  • the tube which suffers the most stress is the first tube of the chamber circulating the fluid with the lowest temperature.
  • Baffle 20 is thus received in the first tube 12b of chamber 26, and it is placed against the wall of tube 12b which is in contact with chamber 24.
  • baffle 20 separates effectively chambers 24 and 26 after brazing of the heat exchanger, while reinforcing the most stressed tube end.
  • baffle 20 occupies part of the output section of the tube end in which it is received. This allows the strengthening of the tube radius against thermal stress, while insuring that the tube which receives baffle 20 is not rendered dummy,
  • the baffle 20 occupies from 20% up to 100% of the output section of the tube end and more advantageously, up to 50% of the output section of the tube. We have noted that in this last range, the decrease of performance of the heat exchanger (dummy tubes) was not relevant,
  • Figure 2b is a cross sectional of figure 2 and is taken inside the tube 12b which receives baffle 20. This figure shows best the U-shape of cover 40 and collector 36 which are brazed together along the respective branches of their U-shape.
  • tubes 12 of the described embodiment have two channels 121 and 122 which are separated by a wall 123 having an axis of symmetry X-X.
  • upper portion 50 of baffle 20 has edges 54 each with a rounding 56 which accommodates the rounded portion of cover 40 at the corners of the U-shape. This allows for better brazing.
  • lower portion 52 of baffle 20 is connected to upper portion 50 by a tapered portion 58.
  • Tapered portion 58 allows for good insertion inside the tube end, and constitutes a stop for the insertion of baffle 20.
  • upper portion 50 constitutes a main portion accommodating the inside of header 16 for a well sealed separation
  • lower portion 52 constitutes a thinned portion which accommodates the inside of the tube in which it is received.
  • Lower portion 52 also comprises cut edges 60, which permit easy mounting of baffle 20 inside tube 12.
  • Lower portion 52 further comprises a cutting 62 for accommodating wall member 123 of the tube in which it extends.
  • cutting 62 is slightly tapered, such that the lowest portion of cutting 62 is larger than the highest portion of cutting 62. Cutting 62 thus enables good positioning of baffle 20 in tube 12 and insures the mechanical stability of baffle 20 before brazing of the heat exchanger.
  • the baffle may comprise several cuttings in order to accommodate tubes with more than two channels, or none should there be only one.
  • the above described heat exchanger comprise aluminium headers having a U-shape, ail sorts of shape may be used for these headers, as wei! as a variety of materials including steel, steel alloys or aluminium alloys.

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)

Abstract

Dans la présente invention, un échangeur de chaleur destiné à un véhicule à moteur comprend un faisceau de tubes logé au niveau d'une extrémité dans un collecteur ainsi que des première et deuxième chambres de circulation de fluides respectifs. Les chambres sont séparées par des moyens de séparation. Lesdits moyens de séparation comprennent un déflecteur qui s'étend dans une extrémité de tube logée dans ledit collecteur.
PCT/EP2008/050561 2007-02-23 2008-01-18 Échangeur de chaleur amélioré pour un véhicule WO2008101755A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07460004A EP1962044A1 (fr) 2007-02-23 2007-02-23 Échangeur de chaleur amélioré pour véhicule automobile
EP07460004.0 2007-02-23

Publications (1)

Publication Number Publication Date
WO2008101755A1 true WO2008101755A1 (fr) 2008-08-28

Family

ID=38335637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/050561 WO2008101755A1 (fr) 2007-02-23 2008-01-18 Échangeur de chaleur amélioré pour un véhicule

Country Status (2)

Country Link
EP (1) EP1962044A1 (fr)
WO (1) WO2008101755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108954922A (zh) * 2018-08-28 2018-12-07 珠海格力电器股份有限公司 一种微通道换热器和空调器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102025738B1 (ko) * 2012-07-06 2019-09-27 삼성전자주식회사 냉장고 및 이에 구비되는 열교환기
CN104746644B (zh) * 2013-12-26 2018-01-02 青岛安装建设股份有限公司 一种内外双环形钢管支座

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63127091A (ja) * 1986-11-18 1988-05-30 Toyo Radiator Kk タンクとパイプの接合方法
US4960169A (en) * 1989-06-20 1990-10-02 Modien Manufacturing Co. Baffle for tubular heat exchanger header
JPH02302592A (ja) * 1989-05-15 1990-12-14 Nippondenso Co Ltd 熱交換器
US5299635A (en) * 1993-03-05 1994-04-05 Wynn's Climate Systems, Inc. Parallel flow condenser baffle
US5318111A (en) * 1993-06-22 1994-06-07 Ford Motor Company Integral baffle assembly for parallel flow heat exchanger
EP1557630A1 (fr) * 2004-01-23 2005-07-27 BEHR Lorraine S.A.R.L. Echangeur de chaleur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63127091A (ja) * 1986-11-18 1988-05-30 Toyo Radiator Kk タンクとパイプの接合方法
JPH02302592A (ja) * 1989-05-15 1990-12-14 Nippondenso Co Ltd 熱交換器
US4960169A (en) * 1989-06-20 1990-10-02 Modien Manufacturing Co. Baffle for tubular heat exchanger header
US5299635A (en) * 1993-03-05 1994-04-05 Wynn's Climate Systems, Inc. Parallel flow condenser baffle
US5318111A (en) * 1993-06-22 1994-06-07 Ford Motor Company Integral baffle assembly for parallel flow heat exchanger
EP1557630A1 (fr) * 2004-01-23 2005-07-27 BEHR Lorraine S.A.R.L. Echangeur de chaleur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108954922A (zh) * 2018-08-28 2018-12-07 珠海格力电器股份有限公司 一种微通道换热器和空调器

Also Published As

Publication number Publication date
EP1962044A1 (fr) 2008-08-27

Similar Documents

Publication Publication Date Title
EP0643278B1 (fr) Evaporateur pour refroidisseurs dans les véhicules automobiles
US6769269B2 (en) Multistage gas and liquid phase separation condenser
EP1167911B1 (fr) Evaporateur
JP5408951B2 (ja) 冷媒蒸発器およびそれを用いた空調装置
US9976816B2 (en) Connecting reinforcement for between the plates of a heat exchanger
US6904965B2 (en) Radiator with side flat tubes
US10337808B2 (en) Condenser
JP6615118B2 (ja) 車両用熱交換器チューブおよびそのようなチューブを備える車両用ラジエータ
JPH0345300B2 (fr)
WO2008101755A1 (fr) Échangeur de chaleur amélioré pour un véhicule
JPH0245945B2 (fr)
CN108709445B (zh) 保冷热交换器
JP2011257111A5 (fr)
US20120000634A1 (en) Heat Exchanger
JP2007078292A (ja) 熱交換器および複式熱交換器
JP4731212B2 (ja) 熱交換器
JPH0674609A (ja) 熱交換器
JPH0345302B2 (fr)
EP1887295B1 (fr) Condenseur avec un bouteille améliorée
EP1447636A1 (fr) Echangeur de chaleur
WO2021099339A1 (fr) Armature pour échangeur de chaleur
JP2005195317A (ja) 熱交換器
JPH0581826B2 (fr)
JP6809282B2 (ja) 凝縮器
JPH03279762A (ja) 複式熱交換器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08701573

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08701573

Country of ref document: EP

Kind code of ref document: A1