EP2060866A1 - Sammelbehälter für verbesserten Wärmetauscher und entsprechender Wärmetauscher - Google Patents

Sammelbehälter für verbesserten Wärmetauscher und entsprechender Wärmetauscher Download PDF

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Publication number
EP2060866A1
EP2060866A1 EP08166934A EP08166934A EP2060866A1 EP 2060866 A1 EP2060866 A1 EP 2060866A1 EP 08166934 A EP08166934 A EP 08166934A EP 08166934 A EP08166934 A EP 08166934A EP 2060866 A1 EP2060866 A1 EP 2060866A1
Authority
EP
European Patent Office
Prior art keywords
plate
box according
collector
stamped
tubes
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Withdrawn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
EP08166934A
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English (en)
French (fr)
Inventor
Sylvain Moreau
Philippe Doucet
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
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Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2060866A1 publication Critical patent/EP2060866A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates

Definitions

  • the invention relates to the field of heat exchangers and in particular to exchangers intended to be traversed by a fluid under high pressure.
  • the invention relates more particularly to air conditioning evaporators that can be traversed by a refrigerant fluid in the supercritical state, as is the case of natural gases such as carbon dioxide or CO2.
  • a refrigerant fluid in the supercritical state, as is the case of natural gases such as carbon dioxide or CO2.
  • Such exchangers find particular application in motor vehicles.
  • Collection boxes generally obtained by brazing, which are designed to withstand such high pressures, are already known.
  • the manifold is formed from an extruded hollow section in which are arranged slots for receiving the tubes of the heat exchanger bundle.
  • This solution requires machining a massive extruded profile to allow insertion of the tubes. Then, it does not allow to add a solder plating inside to allow a good solderability.
  • manifolds comprising at least two parts, namely a stamped manifold and a lid.
  • JP 2000-337788 discloses a manifold composed of a stamped collector plate and an extruded lid. Flat tubes are introduced through the opening of the collector plate.
  • JP 2003-075024 discloses a three-part header, comprising a header plate, a cover and an intermediate plate used for dispensing the fluid.
  • the collector plate is made by stamping and the tubes are introduced into collars of the collector plate which protrude inside the collector box. Because the ends of the tubes protrude inside the manifold, the interior volume thereof can not be minimized.
  • JP 2002-041332 shows an embodiment similar to the previous one which has the same disadvantage of the fact that the ends of the tubes must protrude inside the manifold.
  • Another solution known by EP 0 553 471 relates to a multi-part manifold in which the tubes do not protrude into the manifold.
  • the brazing between the tubes and the collector plate is made in the thickness of the collector plate.
  • This solution requires an additional plate to stop the ends of the tubes.
  • the surface in contact with the ends of the tubes does not have solder plating.
  • This veneer comes from the rest of the header plate and / or the stop plate. As a result, the weight of this part is not optimized.
  • the invention improves the situation.
  • the invention proposes a header box for a heat exchanger, comprising a header plate and a cover.
  • the header plate is provided with at least one row of receiving openings for heat exchange tubes, which reception openings are expressed in a first transverse direction.
  • the lid comprises an intermediate plate having apertured faces apertures each speaking in a second so-called longitudinal direction and a stamped plate having an inner face.
  • the intermediate plate and the stamped plate are secured at the level of said faces which are provided capable of being brazed to one another, and with at least some openings of the intermediate plate substantially facing stampings of the stamped plate.
  • the stampings of the stamped plate and the openings of the intermediate plate together define a collecting volume so as to put into communication two receiving openings of said collector plate adjacent in said longitudinal direction.
  • This manifold is particularly advantageous because, by the embodiment of the manifold in four parts and more precisely by producing the collector in a lid and an intermediate plate, it allows to achieve all the elements by drilling and / or stamping, which guarantees optimum brazing and therefore easy assembly and optimum resistance.
  • the invention also relates to a heat exchanger comprising a tube bundle and at least one header box as previously described.
  • FIG. 1 shows a heat exchanger 10 having a beam 12 mounted between a lower manifold 14 and an upper manifold 16, the heat exchanger being considered in a vertical position.
  • the beam 12 is composed of two rows of tubes 18 (only one of which is visible on the figure 1 ) and corrugated inserts 20 common to both rows of tubes.
  • the beam 12 is delimited longitudinally by two end plates 21 which come against the end tubes.
  • the manifold 16 is provided with two pipes 22 and 24 respectively for the admission and discharge of a fluid flowing through the tubes of the bundle.
  • the heat exchanger 10 is in the form of an evaporator capable of being traversed by a refrigerant fluid operating in the supercritical state, in particular CO2, the pressure of which can reach values of order of 100 to 150 bars.
  • This fluid exchanges heat with a stream of air that scans the tube bundle to produce a flow of air conditioning, especially in a motor vehicle.
  • FIG 2 represents an exploded view of the heat exchanger of the figure 1 .
  • the header box 14 comprises a header plate 26 provided with openings 28 for receiving the tubes of the bundle.
  • the collecting plate 26 is generally rectangular in shape and comprises, along its two long sides, crimping members 30.
  • the openings 28 are of elongate shape and arranged in two rows corresponding to the two rows of tubes.
  • the direction of elongation of the openings 28 is transverse to the direction in which they are arranged.
  • the openings 28 are aligned in a longitudinal direction of the header plate 26, and they are expressed in a transverse direction of this same header plate 26.
  • a distribution plate 38 having two rows of slots 40 each communicating with a tube 18 and a row of slots 42 of greater width which each communicate with two adjacent tubes belonging to the two rows of the beam. Slots 40 and 42 contribute to defining chambers which allow the distribution of the fluid and its circulation in the tubes of the bundle along a defined path.
  • the distribution plate 38 Above the distribution plate 38 are placed an intermediate plate 43 and a stamped plate 44 which together form a cover 45 intended to be held against the header plate, by trapping the distribution plate 38, under the action of the crimp 30.
  • the cover 45 will be described further with the Figures 3 and 4 .
  • the upper manifold 16 is made in a similar manner, except that it has an extension 32 in which holes 34 and 36 are provided for the respective mounting of the tubes 22 and 24.
  • the header plate 46 consists of a header plate 46, a distribution plate 48 and a cover 51 formed by an intermediate plate 49 and a stamped plate 50.
  • the distribution plate 48 has two rows of slots 52 communicating each with a beam tube at its bottom.
  • the collecting plate 26 is a stamped plate having a flat inner face 54 for receiving the distribution plate 38 and an outer face 56 from which extend flanges 58 respectively surrounding the openings 28 for receiving the tubes.
  • the outer face 56 is directed downwards and the collars 58 are also directed downwards. These collars are therefore arranged in two rows corresponding to the two rows of openings 28.
  • the collars and the openings have a rectangular general section to allow the reception of flat tubes 18 having a homologous external section.
  • the distribution plate 38 has a planar inner face 62 adapted to come into contact with the flat inner face 54 of the collector plate and an outer surface 64 that is generally flat, opposite, adapted to receive the cover 45.
  • the slots 40 and 42 are arranged in the thickness of the distribution plate.
  • the distribution plate 38 forms at the same time the insertion stop for the tubes as seen on the figure 3 .
  • the respective ends of the tubes can not exceed the plane defined by the inner face 54 of the header plate.
  • the cover 45 is made here in the form of the intermediate plate 43 and the stamped plate 44.
  • the intermediate plate 43 is a substantially rectangular plate having two substantially flat opposite faces 67 and 69, and of dimensions homologous to those of the distribution plate 38.
  • the intermediate plate 43 also comprises rows of openings 65 or longitudinal slots. The arrangement of the openings 65 will be specified below.
  • the stamped plate 44 is a stamped part having a peripheral edge 66 ( figure 3 ) for the support of the crimping members 30. Thus when the tabs 60 are folded, they maintain the lid in support of the header plate by trapping the distribution plate.
  • the stamped plate 44 has a series of bosses 68 extending in the direction of the length of the lid.
  • the bosses 68 and the openings 65 are arranged so that, when the stamped plate 44 covers the intermediate plate 43, the bosses 68 respectively define chambers 70 communicating with the chambers of the distribution plate (that is to say the slots 40 and 42 thereof) through the openings 65.
  • the openings 65 are expressed in the longitudinal direction of the header plate 26, and they are arranged aligned in the transverse direction of the same header plate 26.
  • the stamped plate 44 has a substantially flat surface 72 on the opposite face to the bosses 68, which is adapted to bear flat on one of the flat faces 67 and 69 of the intermediate plate 43.
  • bosses are suitably arranged to allow the refrigerant fluid to penetrate inside the manifold 16 via the manifold 22, to then circulate in the tubes of the bundle between the manifold 16 and the manifold 14 and then leave the exchanger by the outlet pipe 24.
  • the manifold 14 is made in a similar manner to the manifold 16, except that it has an extension for mounting fluid inlet and outlet tubing.
  • On the figure 5 there is shown the distribution plate 48 and the intermediate plate 49 of the upper header box 16.
  • This figure shows that the intermediate plate 49 has two groups G1 and G2 of longitudinal slots 65.
  • the slots of the group G1 extend over a shorter distance than those of the group G2.
  • the group of slots G1 is extended to accommodate the extension 32 of the distribution plate 48.
  • the slots of the group G1 comprise an end arc 68 to accommodate the shape of the openings 34 and 36 of the distribution plate 48.
  • the intermediate plates 43 and 49 are arranged head-to-tail in the manifolds 16 and 14, so that the groups of slots G1 and G2 of these plates, as well as the rows of slots arranged in the distribution plates 38 and 48 ensure a 6-pass traffic.
  • the precise manner in which the circulation of the fluid takes place in the beam will not be described in more detail, since it is well known to those skilled in the art.
  • header plate 26, distribution plate 38 and stamped plate 44 are each made from a metallic material, preferably aluminum alloy, with a thickness sufficient to withstand the significant pressures of the fluid refrigerant.
  • a metallic material preferably aluminum alloy
  • the assembly is performed by superimposing the lid on one of the flat faces of the intermediate plate, the other flat face thereof on the outer face of the distribution plate, and the lower face thereof on the flat face. the collector plate, then crimp the crimping members on the cover.
  • braze plating On the inner face of the header plate, the flat faces of the intermediate plate, the flat face of the cover, and the flat faces of the distribution plate.
  • This veneer may be placed either on one of the faces at each interface (i.e., stamped plate / intermediate plate, intermediate plate / distribution plate and distribution plate / collector plate), or both. .
  • the figure 6 represents an intermediate plate 80 used in a second embodiment of the invention.
  • bridges 84 have been made therein.
  • the bridges 84 are stamped to have a minimum thickness ( figure 7 ) so as not to disturb the flow of fluid.
  • the bridges 84 can be distributed according to various patterns in order to ensure the best compromise between loss of load and rigidity of the intermediate plate 80.
  • the manifold of the invention is capable of many variants. It finds a main application to heat exchangers traversed by a high-pressure refrigerant, in particular to air-conditioning evaporators traversed by a supercritical fluid such as CO2, such as those intended for motor vehicles.

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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP08166934A 2007-11-16 2008-10-17 Sammelbehälter für verbesserten Wärmetauscher und entsprechender Wärmetauscher Withdrawn EP2060866A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708071A FR2923902A1 (fr) 2007-11-16 2007-11-16 Boite collectrice pour echangeur de chaleur amelioree et echangeur de chaleur correspondant

Publications (1)

Publication Number Publication Date
EP2060866A1 true EP2060866A1 (de) 2009-05-20

Family

ID=39537946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166934A Withdrawn EP2060866A1 (de) 2007-11-16 2008-10-17 Sammelbehälter für verbesserten Wärmetauscher und entsprechender Wärmetauscher

Country Status (3)

Country Link
EP (1) EP2060866A1 (de)
JP (1) JP2009121808A (de)
FR (1) FR2923902A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3517879A1 (de) * 2018-01-25 2019-07-31 Valeo Vyminiky Tepla, s.r.o. Versorgungsplatte für wärmeaustauscher
CN114353387A (zh) * 2021-11-22 2022-04-15 浙江银轮新能源热管理系统有限公司 耐高压的空调换热器
US11624565B2 (en) * 2018-05-25 2023-04-11 Hangzhou Sanhua Research Institute Co., Ltd. Header box and heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025304B1 (fr) * 2014-08-26 2016-12-23 Valeo Systemes Thermiques Boite collectrice compacte pour un echangeur de chaleur

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553471A2 (de) 1992-01-25 1993-08-04 Robert Bosch Gmbh Riemenantrieb von elektrischen Maschinen
US5934367A (en) * 1996-12-19 1999-08-10 Sanden Corporation Heat exchanger
JP2000337788A (ja) 1999-05-25 2000-12-08 Denso Corp 熱交換器
JP2002041332A (ja) 2000-07-27 2002-02-08 Hitachi Software Eng Co Ltd プログラム品質評価方法及び記録媒体
WO2003004614A2 (en) 2001-07-06 2003-01-16 The Regents Of The University Of California Identification and use of conserved noncoding sequences
JP2003075024A (ja) 2001-06-18 2003-03-12 Showa Denko Kk 蒸発器、その製造方法、蒸発器用ヘッダー部材及び冷凍システム
US20050235691A1 (en) * 2004-04-08 2005-10-27 Denso Corporation Refrigerant evaporator
JP2005345038A (ja) * 2004-06-04 2005-12-15 Calsonic Kansei Corp 熱交換器
US20060162917A1 (en) * 2005-01-27 2006-07-27 Taeyoung Park Heat exchanger
FR2892804A1 (fr) 2005-10-28 2007-05-04 Valeo Systemes Thermiques Boite collectrice pour echangeur de chaleur, notamment pour evaporateur de climatisation, echangeur comportant une telle boite et procede pour sa fabrication
US20070131398A1 (en) * 2005-12-14 2007-06-14 Showa Denko K.K. Heat exchanger

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553471A2 (de) 1992-01-25 1993-08-04 Robert Bosch Gmbh Riemenantrieb von elektrischen Maschinen
US5934367A (en) * 1996-12-19 1999-08-10 Sanden Corporation Heat exchanger
JP2000337788A (ja) 1999-05-25 2000-12-08 Denso Corp 熱交換器
JP2002041332A (ja) 2000-07-27 2002-02-08 Hitachi Software Eng Co Ltd プログラム品質評価方法及び記録媒体
JP2003075024A (ja) 2001-06-18 2003-03-12 Showa Denko Kk 蒸発器、その製造方法、蒸発器用ヘッダー部材及び冷凍システム
WO2003004614A2 (en) 2001-07-06 2003-01-16 The Regents Of The University Of California Identification and use of conserved noncoding sequences
US20050235691A1 (en) * 2004-04-08 2005-10-27 Denso Corporation Refrigerant evaporator
JP2005345038A (ja) * 2004-06-04 2005-12-15 Calsonic Kansei Corp 熱交換器
US20060162917A1 (en) * 2005-01-27 2006-07-27 Taeyoung Park Heat exchanger
FR2892804A1 (fr) 2005-10-28 2007-05-04 Valeo Systemes Thermiques Boite collectrice pour echangeur de chaleur, notamment pour evaporateur de climatisation, echangeur comportant une telle boite et procede pour sa fabrication
US20070131398A1 (en) * 2005-12-14 2007-06-14 Showa Denko K.K. Heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3517879A1 (de) * 2018-01-25 2019-07-31 Valeo Vyminiky Tepla, s.r.o. Versorgungsplatte für wärmeaustauscher
WO2019145466A1 (en) * 2018-01-25 2019-08-01 Valeo Výmìníky Tepla, S.R.O. Feeding plate for heat exchanger
US11624565B2 (en) * 2018-05-25 2023-04-11 Hangzhou Sanhua Research Institute Co., Ltd. Header box and heat exchanger
CN114353387A (zh) * 2021-11-22 2022-04-15 浙江银轮新能源热管理系统有限公司 耐高压的空调换热器

Also Published As

Publication number Publication date
FR2923902A1 (fr) 2009-05-22
JP2009121808A (ja) 2009-06-04

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