EP3519755B1 - Flüssigkeitssammelbehälter für einen wärmetauscher, zugehöriger wärmetauscher - Google Patents

Flüssigkeitssammelbehälter für einen wärmetauscher, zugehöriger wärmetauscher Download PDF

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Publication number
EP3519755B1
EP3519755B1 EP17787220.7A EP17787220A EP3519755B1 EP 3519755 B1 EP3519755 B1 EP 3519755B1 EP 17787220 A EP17787220 A EP 17787220A EP 3519755 B1 EP3519755 B1 EP 3519755B1
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EP
European Patent Office
Prior art keywords
opening
cover
receptacle
header tank
openings
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Active
Application number
EP17787220.7A
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English (en)
French (fr)
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EP3519755A1 (de
Inventor
Jean-Baptiste CUILLIER
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
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Valeo Systemes Thermiques SAS
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Publication of EP3519755A1 publication Critical patent/EP3519755A1/de
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Publication of EP3519755B1 publication Critical patent/EP3519755B1/de
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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
    • F28F9/0219—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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the present application relates to a fluid collecting box for a heat exchanger, as well as a heat exchanger equipped with such a device, and more particularly in applications to heating, ventilation and/or air conditioning devices.
  • Some of these heat exchangers include a plurality of tubes allowing an exchange of thermal energy between a fluid flowing inside the tubes and a fluid flowing between the tubes.
  • the tubes are connected to collector boxes whose function is respectively to distribute or collect the fluid at the ends of the tubes, depending on whether the box is upstream or downstream of the heat exchanger.
  • Each collector box is fluidly connected to a thermal loop via one or more openings.
  • the collector box makes it possible to fluidly connect all the tubes by limiting the number of connections at the loop, which in particular makes it possible to limit the risk of leaks.
  • JP 2004 020104 discloses a collector box comprising the features of the preamble of claim 1.
  • the tubes are arranged so as to be parallel to each other, in order to promote heat exchange with their environment while optimizing their size. This implies that the openings present in the bottom of the collector box, intended to communicate fluidly with the tubes, are also aligned. This has the disadvantage of forcing the fluid to diffuse all along the box to ensure the supply of all the tubes. This divergent flow of the liquid in the upstream collector box imposes a turbulent flow on the fluid, leading to a loss of load as it passes through the collector box. We understand that the same phenomenon of pressure loss occurs when the fluid passes through the collector box Fluid collector box for heat exchanger, associated heat exchanger .
  • the present application relates to a fluid collecting box for a heat exchanger, as well as a heat exchanger equipped with such a device, and more particularly in applications to heating, ventilation and/or air conditioning devices.
  • Some of these heat exchangers include a plurality of tubes allowing an exchange of thermal energy between a fluid flowing inside the tubes and a fluid flowing between the tubes.
  • the tubes are connected to collector boxes whose function is respectively to distribute or collect the fluid at the ends of the tubes, depending on whether the box is upstream or downstream of the heat exchanger.
  • Each collector box is fluidly connected to a thermal loop via one or more openings.
  • the collector box makes it possible to fluidly connect all the tubes by limiting the number of connections at the loop, which in particular makes it possible to limit the risk of leaks.
  • the tubes are arranged so as to be parallel to each other, in order to promote heat exchange with their environment while optimizing their size. This implies that the openings present in the bottom of the collector box, intended to communicate fluidly with the tubes, are also aligned. This has the disadvantage of forcing the fluid to diffuse all along the box to ensure the supply of all the tubes. This divergent flow of the liquid in the upstream collector box imposes a turbulent flow on the fluid, leading to a loss of load as it passes through the collector box. We understand that the same phenomenon of pressure loss occurs when the fluid passes through the collector box swallows, due to its converging flow towards the opening connected to the thermal loop of the heating, ventilation and/or air conditioning device.
  • the present invention aims to remedy these drawbacks, by proposing a fluid collecting box for a heat exchanger limiting the phenomenon of pressure loss of a fluid passing through the box.
  • a fluid collecting box for a heat exchanger in particular in a heating, air conditioning and/or ventilation device of a motor vehicle, comprising a receptacle delimited by at least one side wall and a wall bottom comprising several first openings substantially aligned in a direction of elongation of the box.
  • a box according to the invention comprises a bottom and at least one side wall, preferably substantially normal to said bottom, so as to collect at said bottom, a refrigerant or heat transfer fluid according to the needs of the heat exchanger, said fluid being able to pass through the bottom wall via the first openings.
  • the receptacle In order to temporarily store the fluid in the box, the receptacle is closed by a cover comprising at least a second opening, for receiving a supply conduit capable of being connected to the box to communicate fluidly with the receptacle and further downstream the heat exchanger.
  • the invention is characterized in that at least one second opening of the cover has an elongated shape substantially in the direction of elongation, and in that this second opening is arranged opposite several first openings.
  • the collector box of the invention is such that the second opening is characterized by a ratio between its largest and its smallest dimension, at least greater than 1.5; we understand that the dimensions of the second opening can be adapted according to the dimensions and the number of first openings that we wish to be opposite the second opening.
  • opposite we mean a second opening revealing several first openings when we observe the interior of the collector box above the cover, this opposite arrangement allowing a linear or substantially linear flow of a fluid between said openings.
  • the collector box of the invention comprises a barrel arranged on the exterior face of the cover so as to surround the second opening, in order to facilitate the adjustment of a conduit to this second opening.
  • the barrel makes it easier to mount a fluid supply conduit on the cover by acting as a guide.
  • this barrel may have a height of between 0.8mm and 1.2mm.
  • ight we mean a dimension of the barrel along an axis normal or substantially normal to the external face of the cover.
  • the free end of at least one side wall and the cover are cold deformed to secure the cover to the receptacle, and it can be provided that the cover is crimped onto the receptacle by one or more ends of one or more side walls of the receptacle.
  • the present invention also relates to a conduit connected to a collector box described above, comprising an orifice of shape similar to a second opening of the cover, that is to say an elongated shape, in particular oblong or rectangular.
  • This conduit may include a collar surrounding the wall delimiting the orifice of the conduit, in a continuous or discontinuous manner, the collar being arranged to allow the conduit to be mounted on the box, in particular by crimping the collar with at least one side wall of the box, simultaneously with the cover, and this so that the conduit communicates fluidly with the interior of the collector box via the second opening.
  • the collar is held on the cover by one or more free ends of a side wall of the receptacle.
  • the collar is held on the cover by the free ends of two facing side walls.
  • the latter can have a wall thickness greater than the thickness of the wall of the conduit in the vicinity of the end which it extends substantially perpendicularly, so as to ensure better support of the conduit through the flange.
  • the present application also relates to a heating, ventilation and/or air conditioning device comprising at least one heat exchanger supplied with fluid by a supply conduit described above and connected to a collector box described above.
  • the first openings can be connected to tubes forming a bundle of a heat exchanger, and at least one second opening to this supply conduit of the heat exchanger.
  • the deformed side walls of the receptacle to fix the cover in relation to the collector box also allow the fixing of the conduit, via its flange in relation to this same collector box.
  • the receptacle by one or more ends of one or more side walls of the receptacle.
  • the present invention also relates to an assembly of a conduit and a collector box described above, comprising an orifice of shape similar to a second opening of the cover, that is to say an elongated shape, in particular oblong or rectangular.
  • This conduit may include a collar surrounding the wall delimiting the orifice of the conduit, in a continuous or discontinuous manner, the collar being arranged to allow the conduit to be mounted on the box, in particular by crimping the collar with at least one side wall of the box, simultaneously with the cover, and this so that the conduit communicates fluidly with the interior of the collector box via the second opening.
  • the collar is held on the cover by one or more free ends of a side wall of the receptacle.
  • the collar is held on the cover by the free ends of two facing side walls.
  • the latter can have a wall thickness greater than the thickness of the wall of the conduit in the vicinity of the end which it extends substantially perpendicularly, so as to ensure better support of the conduit through the flange.
  • the present application also relates to a heating, ventilation and/or air conditioning device comprising at least one heat exchanger supplied with fluid by an assembly described above.
  • the first openings can be connected to tubes forming a bundle of a heat exchanger, and at least one second opening to this supply conduit of the heat exchanger.
  • the deformed side walls of the receptacle to fix the cover in relation to the collector box also allow the fixing of the conduit, via its flange in relation to this same collector box.
  • a collector box 1 comprises at least one receptacle 2 delimited by a bottom wall 4 and two side walls 6 extending substantially perpendicularly two opposite edges of this bottom wall, so as to form a substantially U-shaped cavity.
  • the latter also comprises a cover 8 brought to be arranged substantially parallel to the bottom wall and which will be described in more detail below, and two end walls 10 which are extend transversely to the bottom and side walls.
  • the collector box is connected, within a thermal loop, in a heating, ventilation and/or air conditioning device, via connection pipes made integral with connection elements carried by this box, and in particular via a conduit. supply 12 of a first fluid as illustrated in the Figure 4 and which will be detailed in more detail below.
  • a first fluid is brought via the supply conduit 12 upstream of the box collector, to be poured into the receptacle 2 which forms a distribution chamber for this fluid.
  • the fluid is then distributed between different exchange tubes 14 allowing, in a heat exchange chamber not shown, to facilitate the heat exchange with a second fluid circulating along these exchange tubes.
  • the receptacle is made from materials impervious to the fluid that it must accommodate.
  • the thicknesses of the bottom and side walls are chosen so as to resist the pressure of the fluid present in the box.
  • the collector box 1 may include a plurality of receptacles 2 aligned in the direction of extension of the box, corresponding to the axis AA visible on the figures 2 and 3 , each receptacle 2 being closed transversely by end walls 16, which can take the form of a transverse closing wall of the box for the receptacles arranged at the ends of this box, or the shape of a transverse separation wall (as visible on the figure 1 ) between two consecutive receptacles.
  • the cover 8 closes the receptacle 2 at the level of the free ends of the side walls 6, that is to say the ends opposite the bottom wall 4.
  • the cover can be made from the same materials as the side walls and the bottom wall of the box, such as for example from metal or a polymer-based compound.
  • the cover 8 is fixed to the side walls 6 by a known technique of assembling sheets by cold deformation, namely here by crimping the side walls with the cover. In order to facilitate these operations, the cover can rest on lugs 18 arranged projecting from the side walls towards the inside of the receptacle. According to the invention, it should be noted that the cold deformation operation making it possible to secure the cover 8 to the side walls 6 also allows the fixing of the supply conduit 12 of the first fluid to the collector box 1, such that will be detailed below.
  • the collector box has a plurality of openings to allow the fixing of tubes allowing the circulation of fluid through the receptacle(s) 2.
  • These openings consist of, on the one hand, first openings 20 passing through the bottom wall 4 of the receptacle 2 to allow a fluid to exit the collector box and a second opening 22 made in the cover to allow the passage of a fluid from the outside to the inside of the box, this second opening 22 having according to the invention a specific shape, here oblong, in order to be opposite a plurality of first openings 20, which here are of circular shape.
  • the elongated shape of the second opening will be characterized by a ratio, between its largest and its smallest dimension, at least greater than 1.5.
  • this makes it possible to arrange a second opening 22, through which the first fluid enters the receptacle, facing a plurality of first openings 20, through which the first fluid leaves the receptacle. The flow of the first fluid through the receptacle is thus subject to fewer disturbances and suffers fewer pressure losses.
  • the first and second openings are aligned along the same axis AA visible on the Figure 3 and the second oblong-shaped opening 22 is arranged so that its largest dimension, or length, coincides with the axis AA. Furthermore, the width of the second opening 22 is equal to or greater than the diameter of the first openings 20, or the diameter of the largest of the first openings if these have different dimensions, so that the entire plurality of first openings openings 20 facing the second opening 22 are directly accessible from this second opening 22.
  • the dimensions of the second opening 22 depend on the dimensions of the first openings 20 and their spacing.
  • the first openings 20 have a diameter of 5 mm and are spaced apart from each other, along the axis AA, by 3 mm, while the length and width of the second opening 22 are respectively equal to or greater at 25mm and 10mm.
  • the first fluid entering the distribution chamber formed by the collector box can be evacuated via the first openings 20 with a predominantly linear flow, that is to say with a minimum of disturbance of the flow (the indirect flow being represented by the two curved arrows Fi at the ends of the direct flow Fi visible on the figure 1 ).
  • the cover 8 comprises on its upper face, facing away from the receptacle, a barrel 24 positioned around the second opening 22. It is therefore understood that the barrel also has a shape elongated in the direction of elongation AA of the collector box, and here an oblong shape, as is particularly visible on the Figure 3 .
  • this conduit has, still at this proximal end 26, a collar 28, extending substantially perpendicularly from the wall of the conduit at this proximal end, and surrounding the opening of the conduit.
  • This collar here continuous, but which could be discontinuous without departing from the context of the invention, is arranged to allow the crimping of the conduit on the cover during the operation of crimping the cover on the collector box.
  • the conduit communicates fluidly with the distribution chamber via the second opening 22 of the collector box.
  • This cold material deformation operation to lock the collar 28 and therefore the supply conduit 12 in position relative to the collector box 1 is carried out when the conduit 12 is perfectly in place facing the second opening 22.
  • the barrel 24 makes it possible to align the opening provided at the proximal end 26 of the conduit 12 with the second opening 22, by fitting, or at least by guiding the conduit around the barrel.
  • the thickness of the collar 28 is greater than the thickness of the conduit, at least in the proximal end zone which the collar extends substantially perpendicularly.
  • the preceding description clearly explains how the invention makes it possible to achieve the objectives it has set for itself and in particular to propose a collector box in a ventilation, heating and/or air conditioning device which is particularly easy to assemble and which allows distribution of the fluid through the collector box minimizing pressure losses.
  • the second opening made on the cover of the collector to cooperate with a supply pipe and facilitate the passage of the fluid through a distribution chamber of the collector box towards a plurality of tubes, or of specific dimensions to be opposite a plurality of these tubes, in order to increase the linearity of flow of this fluid and to reduce the pressure losses which would result from a linear flow.

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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)
  • Duct Arrangements (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (12)

  1. Flüssigkeitsendkammer (1) für einen Wärmetauscher, umfassend einen Behälter (2), der durch mindestens eine Seitenwand (6) und eine Bodenwand (4) begrenzt wird, die mehrere erste Öffnungen (20) beinhaltet, die im Wesentlichen entlang einer Erstreckungsrichtung der Kammer (A-A) aneinandergereiht sind, wobei der Behälter durch einen Deckel (8) verschlossen wird, der mindestens eine zweite Öffnung (22) zur Aufnahme einer Zuführungsleitung gegenüber von mehreren ersten Öffnungen (20) beinhaltet, wobei die zweite Öffnung (22) eine langgestreckte Form hat, die ein größtes Maß entlang der Erstreckungsrichtung der Kammer (A-A) aufweist, und wobei die zweite Öffnung ein Verhältnis zwischen ihrem größten und ihrem kleinsten Maß aufweist, das mindestens größer als 1,5 ist, dadurch gekennzeichnet, dass sie einen Schaft (24) beinhaltet, der von der Außenseite des Deckels (8) vorspringend ausgebildet ist, um die zweite Öffnung (26) zu umgeben.
  2. Endkammer nach Anspruch 1, dadurch gekennzeichnet, dass das größte Maß der zweiten Öffnung (22) größer als der Abstand ist, der zwei aufeinander folgende erste Öffnungen (20) trennt, die gegenüber der zweiten Öffnung ausgebildet sind.
  3. Endkammer nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die zweite Öffnung (22) gegenüber von mindestens drei ersten Öffnungen (20) angeordnet ist.
  4. Endkammer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Öffnung (22) eine längliche Form aufweist.
  5. Endkammer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das freie Ende mindestens einer Seitenwand (6) und der Deckel (8) kaltverformt werden, um die Fixierung des Deckels auf dem Behälter (2) auszuführen.
  6. Endkammer nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Deckel (8) auf den Behälter (2) über ein oder mehrere Enden einer oder mehrerer Seitenwände (6) des Behälters gepresst ist.
  7. Anordnung aus einer Leitung (12) und einer Endkammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie an einem proximalen Ende (26) eine Öffnung von langgestreckter Form umfasst, die der Form der in dem Deckel (8) gebildeten zweiten Öffnung (22) ähnlich ist.
  8. Anordnung nach Anspruch 7, dadurch gekennzeichnet, dass sie einen Flansch (28) umfasst, der die Öffnung mindestens teilweise umgibt und dazu ausgebildet ist, die Montage der Leitung an dem Deckel (8) der Endkammer zu ermöglichen.
  9. Anordnung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass mindestens ein Teil des Flansches (28) an dem Deckel (8) durch ein oder mehrere Enden einer kaltverformten Seitenwand (6) des Behälters (2) gehalten wird.
  10. Zuführungsanordnung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Flansch (28) eine Wanddicke hat, die größer als die Dicke der Wand der Leitung (12) in der Umgebung des proximalen Endes (26) ist, das er verlängert.
  11. Heizungs-, Lüftungs- und/oder Klimatisierungsvorrichtung, umfassend mindestens eine Anordnung nach einem der Ansprüche 7 bis 10, die mit einer Endkammer (1) nach einem der Ansprüche 1 bis 6 verbunden ist.
  12. Vorrichtung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die verformten Seitenwände (6) des Behälters (2) in Bezug auf die Endkammer sowohl den Deckel (8) als auch den Flansch (28) der Leitung (12) fixieren.
EP17787220.7A 2016-09-27 2017-09-27 Flüssigkeitssammelbehälter für einen wärmetauscher, zugehöriger wärmetauscher Active EP3519755B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659128A FR3056728B1 (fr) 2016-09-27 2016-09-27 Boite collectrice de fluide pour echangeur de chaleur, echangeur de chaleur associe.
PCT/FR2017/052611 WO2018060606A1 (fr) 2016-09-27 2017-09-27 Boîte collectrice de fluide pour échangeur de chaleur, échangeur de chaleur associé

Publications (2)

Publication Number Publication Date
EP3519755A1 EP3519755A1 (de) 2019-08-07
EP3519755B1 true EP3519755B1 (de) 2024-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17787220.7A Active EP3519755B1 (de) 2016-09-27 2017-09-27 Flüssigkeitssammelbehälter für einen wärmetauscher, zugehöriger wärmetauscher

Country Status (4)

Country Link
EP (1) EP3519755B1 (de)
CN (1) CN110100145A (de)
FR (1) FR3056728B1 (de)
WO (1) WO2018060606A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178213A (en) * 1991-09-03 1993-01-12 Valeo Engine Cooling, Incorporated Automotive ram air system
JPH09112779A (ja) * 1995-10-16 1997-05-02 Zexel Corp 出入口パイプの熱交換器のタンクへの組付方法
JP4212306B2 (ja) * 2002-06-18 2009-01-21 株式会社日本クライメイトシステムズ 熱交換器のパイプ取付構造
JP2007192502A (ja) * 2006-01-20 2007-08-02 Denso Corp 熱交換器
FR3007515B1 (fr) * 2013-06-20 2017-12-15 Valeo Systemes Thermiques Echangeur de chaleur, notamment pour les boucles ou circuits de climatisation des vehicules

Also Published As

Publication number Publication date
FR3056728B1 (fr) 2019-04-05
CN110100145A (zh) 2019-08-06
EP3519755A1 (de) 2019-08-07
WO2018060606A1 (fr) 2018-04-05
FR3056728A1 (fr) 2018-03-30

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