EP1762808A1 - Kreislaufelement mit Flachrohren und Wärmetauscher mit demselben - Google Patents

Kreislaufelement mit Flachrohren und Wärmetauscher mit demselben Download PDF

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Publication number
EP1762808A1
EP1762808A1 EP06018944A EP06018944A EP1762808A1 EP 1762808 A1 EP1762808 A1 EP 1762808A1 EP 06018944 A EP06018944 A EP 06018944A EP 06018944 A EP06018944 A EP 06018944A EP 1762808 A1 EP1762808 A1 EP 1762808A1
Authority
EP
European Patent Office
Prior art keywords
tubes
circuit element
tube
fluid
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06018944A
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English (en)
French (fr)
Inventor
Jean-Philippe Berthome
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP1762808A1 publication Critical patent/EP1762808A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0471—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 bent, e.g. in a serpentine or zig-zag the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • F28F1/045—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular with assemblies of stacked elements

Definitions

  • the invention relates to a flat-tube circuit element for a heat exchanger, in particular a heat exchanger for a vehicle equipment.
  • It relates in particular to a hydraulic circuit element, for a heat exchange between a first fluid and a second fluid, defining a path for the first fluid.
  • Heat exchangers of this type generally consist of a bundle of parallel circuit elements, mounted between at least two manifolds, the circuit elements alternating with spacers that enhance heat exchange.
  • the first fluid circulates inside the circuit elements while the second fluid circulates in the space between the tubes.
  • the circuit elements define a U-shaped path for the first fluid.
  • Each circuit element is then composed of two coplanar and parallel flat tubes.
  • the first fluid arrives in the circuit element through one of the tubes and exits the circuit element through the other tube.
  • a turning zone is provided at one end of the circuit element, to allow the first fluid to pass from one tube to the other.
  • Each collector box collector receives the end of one of the tubes of the circuit element, located on this side of the exchanger.
  • the intermediate box allows the passage of fluid from one tube to another of the circuit element.
  • each manifold comprises a collector plate parallel to the section of the tubes, which receives the ends of the tubes.
  • the width of the collector plate of each collector box and the internal diameter of the collector box are at least equal to the width of a tube.
  • the overall width of the two connected turning boxes is at least equal to the sum of the widths of the tubes and the intermediate box. This results in a large space requirement for the heat exchanger.
  • the width of the collector plate of the box is at least equal to the sum of the widths of the tubes.
  • the internal diameter of the collector box is then equal to this sum. Therefore, the space requirement and the overall width of the heat exchanger are important.
  • the manifolds increase the overall space in depth and / or width of the exchanger.
  • the invention further provides a heat exchanger, particularly for a motor vehicle, comprising a stack of circuit elements as defined above, assembled between at least two collector boxes.
  • Figure 1 is a general diagram of a heat exchanger 1 according to the invention.
  • the heat exchanger 1 comprises a bundle composed of stacked circuit elements 2, mounted between at least two manifolds 80, 82.
  • the circuit elements 2 are stacked in a stacking direction AA and are arranged parallel to each other. other.
  • the circuit elements also alternate with corrugated spacers 6.
  • the heat exchanger 1 allows an exchange between a first fluid flowing inside the tubes and a second fluid flowing between the tubes.
  • the spacers 6 fulfill the role of cooling fins.
  • the circuit element of the invention can be used to realize different types of heat exchangers and, in particular, condensers for motor vehicle air conditioning installations.
  • the circuit element of the invention is advantageously used to produce a gas-cooled type condenser in installations that use a supercritical refrigerant fluid, for example carbon dioxide.
  • the heat exchanger is formed of parts, made in particular based on aluminum, secured by brazing.
  • FIGS. 2 and 3 respectively represent a perspective view of a heat exchanger and a perspective view of a circuit element according to the invention
  • circuit elements 2 of the exchanger 1 shown in these figures define a U-shaped path for the first fluid.
  • Circuit elements of this type generally consist of an end branch through which the fluid arrives in the circuit element, and an output branch through which the fluid exits the circuit element.
  • the fluid inlet and outlet are generally provided on one side of the circuit element while on the other side a fluid reversal zone is provided to allow the fluid to pass from the incoming branch of the fluid. circuit element at its output branch.
  • the arrival branch and the fluid outlet branch of the circuit element 2 of the invention consist of two flat tubes 20 and 22.
  • each flat tube 20 (respectively 22) consists of two long parallel sides F0 (F2), and two small sides B0 (respectively B2) parallel to each other and perpendicular to the long sides.
  • the tubes 20 and 22 have a cross section over their entire length.
  • Each flat tube has an end portion 200 (respectively 220), and a main portion 203 (respectively 223) substantially longitudinal.
  • the longitudinal direction designates the direction (BB) perpendicular to the section of the tubes.
  • the tube 20 is shown schematically in FIG. 4.
  • the end portion 200 of the tube 20 is offset laterally with respect to the main portion 203 of the tube by a selected distance d.
  • the tube 22 has the same structure.
  • lateral offset refers here to an offset in the plane of the tube and in a direction perpendicular to the longitudinal direction (BB).
  • the tubes 20 and 22, respectively, may further include a set of internal partitions defining parallel interior flow channels 40, as further illustrated in FIG. 5.
  • Each tube 20, respectively 22 can be obtained by extruding an aluminum-based material so as to have a straight cross-section and a rectilinear shape.
  • the tubes are then deformed so as to laterally offset the end portion 200 (respectively 220) of the tube 20 (respectively 22) and the main part 203 (respectively 223) of the tube by any suitable deformation technique, for example by a belting technique. Jaws can then be used to prevent the tube from deforming during the belting.
  • This deformation technique is adapted to laterally offset the end portion without deforming the internal flow channels. Thus, the flow of fluid inside the tubes is not disturbed.
  • Each tube 20 or 22 thus has two parallel longitudinal axes and offset laterally by a distance d.
  • the flow direction of the fluid in each tube is therefore substantially longitudinal, except in the deformed portion.
  • each tube 20 or 22 advantageously has a substantially constant section over its entire length.
  • FIG. 3 shows the circuit element 2, as mounted in the beam.
  • the tubes 20 and 22 are associated so as to be superimposed on each other at their end portions 200 and 220 and to be separated laterally at their main portions 203 and 223, which gives the Y-shaped circuit element. More precisely, the end portion 200 of one of the tubes, here the tube 20 is superimposed on the end portion 202 of the other tube 22 and bears thereon. , while the main part 202 of the tube 20 and the main part 222 of the tube 22 are offset laterally.
  • the circuit element remains substantially parallel to the flow direction of the second fluid, which is in particular air,
  • the first fluid arrives in the tube 20, hereinafter referred to as the "arrival tube”, and leaves the circuit element via the tube 22, hereinafter referred to as "tube of The first fluid arriving in the inlet tube 20 passes through the main portion 203 of the tube 20 to its end portion 200.
  • the first fluid exits the tube 20 through its end portion 200 and enters the 22 through the end portion 220 thereof, the first fluid then flows through the main portion 223 of the tube 22 to exit the circuit element 2.
  • the first fluid arrives in the circuit element 2 through the free end 260 of the main portion 200 of the inlet tube 22, hereinafter referred to as the "arrival end”.
  • the inlet ends 260 and outlet ends 262 are located on the same side of the exchanger 1.
  • the superposed end portions 200 and 220 are located on the other side of the exchanger.
  • the circuit element 2 advantageously has a symmetry with respect to a central plane perpendicular to the plane and to the section of the tubes.
  • the lateral offset distance d between the end portion 200 of a tube 20 and the main portion 202 of the tube is chosen so as to provide a lateral gap between the main parts 203 and 223 of the tubes 20 and 22 when they are assembled.
  • This offset may also be chosen as a function of the number of internal flow channels, the width of the tube, the thickness of the walls of the tube and / or the desired radius of curvature in the deformation zone of the tube.
  • each tube 20 further comprises a connecting part 201 (respectively 221) connecting the end part 200 (respectively 220) of the tube 20 (respectively 22) to the main part 203 (FIG. respectively 223) of the tube.
  • This fitting portion corresponds to the deformation zone of the tube.
  • the end portion and the main portion of the same tube are substantially coplanar.
  • the respective main portions 203 and 223 of the tubes 20 and 22 then extend in planes offset in the stacking direction AA.
  • the offset distance of the planes is in particular substantially equal to the height of a tube, as defined by its short sides.
  • the main portions 203 and 223 of the tubes 20 and 22 may be coplanar.
  • the end portion and the main portion of one of the tubes extend in offset planes, while the end portion and the main portion of the other tube are substantially coplanar.
  • the end portion 200 and the main portion 203 of the outlet tube 22 extend in offset planes, while the end portion 220 and the main portion 223 of the outlet tube 22 are substantially coplanar.
  • the offset of the planes of the end portion 200 and the main portion 203 of the tube 20 is made so as to return the main portion 203 of the tube 20 to the same level as the main portion 223 of the tube 22.
  • Each circuit element 2 can be mounted between three collector boxes, as shown in FIG. 2. These collector boxes comprise a collector box 80 on one side of the bundle, and two collector boxes 82 and 84 on the other side. side of the beam for the arrival of the fluid in the exchanger and for the fluid outlet of the exchanger.
  • the connection manifold 82 is a fluid inlet manifold and the manifold manifold 84 is a fluid outlet manifold.
  • each circuit element 2 is received in the collector box 80, the arrival ends 260 of the circuit elements are received in the header manifold 82 and the ends 262 of the circuit elements are received in the outlet header 84.
  • the collector boxes, the bundle of circuit elements and the corrugated inserts are assembled by brazing.
  • Each manifold 80, 82 or 84 has a manifold plate 802, 822 or 842 respectively, extending in a plane parallel to the section of the tubes, in which slots are provided.
  • Each manifold plate 802 (respectively 822 and 842) is closed by a tubular-walled lid 800 (respectively 820 and 840).
  • each manifold 80 has a row of slots, which extends in the stacking direction of the tubes AA, to receive the ends of the manifold. circuit element 2.
  • Each slot of the collector box 80 is shaped to receive simultaneously the two superposed end portions 200 and 220 of the tubes 20 and 22 of a circuit element.
  • the slots in the collector box are directed perpendicular to the longitudinal axis of the collector plate.
  • each slot of the header box 80 has a width substantially equal to the width of a tube 20 or 22 and a height substantially equal to the sum of the heights of the tubes 20 and 22, as defined by the short sides B0 and B2 of the tubes.
  • the inside diameter of the header box 80 is defined by the width of the header plate 802, which is limited by the width of the slots.
  • each slot of the collector box for reversal receives the superposed end portions 200 and 220 of the two tubes at a time.
  • the width of the collector plate can therefore be chosen substantially equal to the width of a tube. Consequently, the overall width and depth of the exchanger 1 of the invention is reduced.
  • the inlet manifolds 82 and exit manifolds 84 respectively comprise a row of arrival slots and a row of exit slots parallel to each other.
  • the rows extend along the stacking direction of the AA tubes.
  • the slots of the arrival row are shaped to receive the arrival ends 260 of the inlet tube and the slots of the outlet row are shaped to receive the outlet ends 262 of the outlet tube.
  • connection manifolds are directed perpendicular to the stacking direction of the AA tubes.
  • connection boxes 82 and 84 is substantially equal to the section of the tubes.
  • the inlet header box 82 is provided with an inlet manifold 32 for the admission of the first fluid, which may be a high pressure fluid, especially carbon dioxide.
  • the outlet manifold 84 is provided with an outlet pipe 34 serving for the outlet of the fluid out of the heat exchanger 1.
  • the path of the first fluid in the exchanger will now be described with reference to FIG. 2.
  • the first fluid arrives in the exchanger 1 through the inlet pipe 32.
  • the first fluid then passes into the inlet manifold 82 then is distributed in the arrival tubes 20 of each circuit element 2.
  • the first fluid passes through the main portion 203 and the connecting portion 201 of the tube 20 to the end portion 200 where it passes into the collector box 80. From there, it returns into the circuit element 2 by entering through the end portion 220 of the outlet tube 22.
  • the first fluid then passes through the tube 22 to its outlet end 262 for exiting the circuit element 2.
  • the fluid opens into the outlet collection box 84, then exits the latter through the outlet pipe 34.
  • the circuit elements of the invention have good resistance to high pressure.
  • the invention is therefore particularly advantageous for the production of heat exchangers traversed by a fluid at high pressure, such as carbon dioxide.
  • a fluid at high pressure such as carbon dioxide.
  • it also applies to the realization of heat exchangers traveled by other types of refrigerant fluids.
  • circuit elements defining a U-shaped path by way of non-limiting example.
  • the invention also applies to circuit elements defining a path I, the first fluid then having an identical direction of circulation in the two tubes 20 and 22 of the same circuit element.
  • the invention is also not limited to the types of manifolds 80, 82 and 84 shown in the figures.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP06018944A 2005-09-13 2006-09-11 Kreislaufelement mit Flachrohren und Wärmetauscher mit demselben Withdrawn EP1762808A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509351A FR2890730B1 (fr) 2005-09-13 2005-09-13 Element de circuit a tubes plats, et echangeur de chaleur muni de tels elements

Publications (1)

Publication Number Publication Date
EP1762808A1 true EP1762808A1 (de) 2007-03-14

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EP06018944A Withdrawn EP1762808A1 (de) 2005-09-13 2006-09-11 Kreislaufelement mit Flachrohren und Wärmetauscher mit demselben

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EP (1) EP1762808A1 (de)
FR (1) FR2890730B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2565571A1 (de) * 2010-04-28 2013-03-06 Sanden Corporation Fahrzeuginnenraum-wärmetauscher
KR20180077188A (ko) * 2015-10-28 2018-07-06 댄포스 마이크로 채널 히트 익스체인저 (지아싱) 컴퍼니 리미티드 열 교환기
EP3396274A4 (de) * 2015-12-24 2019-07-24 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Wärmetauscher und klimaanlagensystem
JP2020165569A (ja) * 2019-03-29 2020-10-08 株式会社富士通ゼネラル 熱交換器
CN114576884A (zh) * 2020-11-30 2022-06-03 丹佛斯有限公司 换热器和空调系统
US20220221226A1 (en) * 2021-01-13 2022-07-14 Mahle International Gmbh Flat tube and heat exchanger
DE102022200916A1 (de) 2021-02-11 2022-08-11 Mahle International Gmbh Wärmeübertrager
CN110220400B (zh) * 2019-05-17 2024-03-29 天津华赛尔传热设备有限公司 一种全焊接板式气气换热器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007608A1 (de) * 2008-02-04 2009-08-06 Behr Gmbh & Co. Kg Wärmeübertrager mit Rohren

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
FR2700610A1 (fr) * 1993-01-18 1994-07-22 Valeo Thermique Moteur Sa Echangeur de chaleur à faisceau de tubes à ailettes, en particulier pour véhicules automobiles, et procédé pour sa fabrication.
EP1452814A1 (de) * 2001-11-08 2004-09-01 Zexel Valeo Climate Control Corporation Wärmetauscher und rohr für wärmetauscher
WO2005071340A1 (ja) * 2004-01-27 2005-08-04 Valeo Thermal Systems Japan Corporation 熱交換器用偏平チューブ、これを用いた熱交換器、及び熱交換器用偏平チューブの成形方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
FR2700610A1 (fr) * 1993-01-18 1994-07-22 Valeo Thermique Moteur Sa Echangeur de chaleur à faisceau de tubes à ailettes, en particulier pour véhicules automobiles, et procédé pour sa fabrication.
EP1452814A1 (de) * 2001-11-08 2004-09-01 Zexel Valeo Climate Control Corporation Wärmetauscher und rohr für wärmetauscher
WO2005071340A1 (ja) * 2004-01-27 2005-08-04 Valeo Thermal Systems Japan Corporation 熱交換器用偏平チューブ、これを用いた熱交換器、及び熱交換器用偏平チューブの成形方法

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2565571A4 (de) * 2010-04-28 2014-09-24 Sanden Corp Fahrzeuginnenraum-wärmetauscher
EP2565571A1 (de) * 2010-04-28 2013-03-06 Sanden Corporation Fahrzeuginnenraum-wärmetauscher
JP7125344B2 (ja) 2015-10-28 2022-08-24 ダンフォス・マイクロ・チャンネル・ヒート・エクスチェンジャー・（ジャシン）・カンパニー・リミテッド 熱交換器
KR20180077188A (ko) * 2015-10-28 2018-07-06 댄포스 마이크로 채널 히트 익스체인저 (지아싱) 컴퍼니 리미티드 열 교환기
JP2018532093A (ja) * 2015-10-28 2018-11-01 ダンフォス・マイクロ・チャンネル・ヒート・エクスチェンジャー・（ジャシン）・カンパニー・リミテッド 熱交換器
US20180340746A1 (en) * 2015-10-28 2018-11-29 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchanger
EP3370019A4 (de) * 2015-10-28 2019-06-26 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. Wärmetauscher
EP3396274A4 (de) * 2015-12-24 2019-07-24 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Wärmetauscher und klimaanlagensystem
US10612856B2 (en) 2015-12-24 2020-04-07 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchanger and air conditioning system
JP2020165569A (ja) * 2019-03-29 2020-10-08 株式会社富士通ゼネラル 熱交換器
CN110220400B (zh) * 2019-05-17 2024-03-29 天津华赛尔传热设备有限公司 一种全焊接板式气气换热器
CN114576884A (zh) * 2020-11-30 2022-06-03 丹佛斯有限公司 换热器和空调系统
US20220221226A1 (en) * 2021-01-13 2022-07-14 Mahle International Gmbh Flat tube and heat exchanger
DE102022200916A1 (de) 2021-02-11 2022-08-11 Mahle International Gmbh Wärmeübertrager

Also Published As

Publication number Publication date
FR2890730A1 (fr) 2007-03-16
FR2890730B1 (fr) 2007-10-19

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