• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a heat exchanger, in particular for a motor vehicle, said exchanger comprising a heat exchange bundle between a first and a second fluid, said bundle comprising a plurality of tubes (3) and a collecting box (2), said tubes (3) and said box (2) allowing the circulation of said first fluid between them, said exchanger further comprising a plate (16) for holding said tubes (3), said plate (16) being fixed on said box (2 ), said box (2) comprising a collector plate (6) provided with passage orifices of said tubes (3), said collector plate (6) being made of plastic material. The invention also relates to a method of manufacturing such an exchanger.
    公开号:FR3026169A1
    申请号:FR1459037
    申请日:2014-09-24
    公开日:2016-03-25
    发明作者:Samuel Bry；Patrick Boisselle；Philippe Lemercier
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a heat exchanger and a method of manufacturing such a heat exchanger. It is particularly aimed at applications in the field of motor vehicles, in particular as a radiator for cooling the coolant used for cooling the engine of the vehicles.
    [0002] In automotive applications, two main types of heat exchangers are known, a first type, referred to as mechanical, corresponding to exchangers obtained by assembling their components by deformation of material, and so-called brazed exchangers, corresponding to exchangers obtained. by assembling their components by soldering.
    [0003] The mechanical exchangers consist mainly of a bundle of tubes in which circulates a coolant and a plurality of fins disposed perpendicularly to the tubes and provided with orifices through which said tubes. The fins have the function of increasing the exchange surface with the air passing through the exchanger. This gives a heat exchange between the fluid flowing in the tubes and the air passing between the fins. The fins are held on the tubes and the tubes are held on the collector plates by means of an expansion of the tubes. More specifically, an expansion olive is passed along the tubes, inside of them. It has the effect of deforming the material of the tubes by increasing their section and thus allows them to be applied against the fins. An interest of mechanical exchangers compared to brazed exchangers is their great ease of assembly. Indeed, brazed exchangers require brazing furnaces forcing heavy investments while mechanical exchangers can be produced with much less heavy investment facilities.
    [0004] However, in the mechanical exchangers, the collector plate and the tubes are made of metal and are subject to corrosion. Such a phenomenon is further amplified by a stack effect between the collector plate and the tubes. Corrosion weakens the tubes and / or the header plate and poses a risk to the tightness of the exchanger. To overcome this drawback, it has already been proposed collector boxes of plastic. These are tubular in shape and provided with a passage hole for the tubes. With such a solution, however, it is difficult to expand the tubes given the space available inside the box. The immobilization of the tubes relative to the boxes poses the problem. The object of the present invention is to remedy these drawbacks and firstly relates to a heat exchanger, in particular for a motor vehicle, said exchanger comprising a heat exchange bundle between a first and a second fluid, said bundle comprising a plurality tube and a manifold, said tubes and said box allowing the circulation of said first fluid between them, said exchanger further comprising a plate for holding said tubes, said plate being fixed on said box, said box comprising a collector plate provided with passage openings of said tubes, said collecting plate being made of plastic material. The collector plate being made of plastic material, it avoids the corrosion phenomena encountered with the metal collector plates of the state of the art. In addition, by connecting the tubes to the box via the holding plate, the problem of immobilization of the tubes with respect to the boxes is solved according to various embodiments which may be taken together or separately: holding plate is attached externally to said box, - said holding plate is attached to said header plate, - said box comprises a lid, attached to said header plate, - said cover is made of plastic material, - said cover and said header plate are fixed by welding, - said tubes are metallic, - said tubes are made of aluminum alloy, - said exchanger further comprises a seal traversed by said tubes, - said seal is located outside said collecting box, - said seal is compressed between said tubes and said header plate at a contour of said ports provided in said header plate for the passage of said tubes, - said tubes have a flare at their ends, - said flare extends at least opposite said holding plate and / or said collector plate, or even facing said seal, - said plate holding is removable relative to said manifold.
    [0005] The invention also relates to a method for manufacturing such an exchanger, said method comprising: a step of fixing said tubes to said holding plate; a step of hooking said holding plate onto said collecting box. According to various embodiments of the invention which may be taken together or separately: said step of fixing the tubes in the holding plate comprises a step of flaring said tubes in said holding plate, said method comprises a step of introduction of said tubes into said collector plate, said step of introducing the tubes into said collector plate is subsequent to the step of fixing said tubes on said holding plate and / or prior to the step of hooking said plate holding said manifold, said step of introducing said tubes into said header plate comprises a step of forcing said tubes into said header plate and / or said seal.
    [0006] The appended figures will make it clear how the invention can be realized. In these figures, identical references designate similar elements. Figure 1 is an elevational view schematically illustrating an exchanger according to the invention. Figure 2 is an exploded perspective view of a header of a heat exchanger according to the invention. Figure 3 is a partial perspective view of a beam of a heat exchanger according to the invention.
    [0007] FIG. 4 is a perspective view showing the assembly of the beam of FIG. 3 on the manifold of FIG. 2. FIG. 5 is a perspective view showing an example of a heat exchanger according to the invention, after assembly. . FIG. 6 is a perspective view showing an alternative embodiment, according to the invention, of the exchanger of FIG. 5. As illustrated in FIG. 1, the invention relates to a heat exchanger 1 between a first and a second fluid. This is a mechanical type exchanger. It comprises a bundle of tubes 3, in which the first fluid circulates, namely here a heat transfer fluid. Said coolant is, for example, glycol water, especially when the exchanger 1 serves as a cooling radiator of a heat engine. Said tubes 3 are, for example, of circular, oval or oblong cross section. In the latter case, their cross section may have concave zones giving the tubes a reduced passage section in their central zone. Said tubes 3 are, for example, a metal alloy such as an aluminum alloy. They are obtained, in particular, by electro-welding. Said beam may further comprise fins cooling or heat dissipation 4, through which the tubes 3. The latter are, for example, aligned in parallel, in one or more rows and the fins 4, provided parallel to each other, are arranged transversely , in particular perpendicular to said tubes 3. To simplify the drawing, only a limited number of fins of the beam has been shown.
    [0008] The fins 4 are provided with passage orifices of tubes of shape corresponding to the cross section of said tubes. They may also have louvers for disrupting the flow of the second fluid, namely here a flow of incident air. In this way, the heat exchange between said air flow, circulating between the fins 4, and the heat transfer fluid circulating in the tubes 3 is favored. Said fins 4 are separated from each other by a step that is advantageously constant. . Said exchanger further comprises two end manifold boxes 2 spaced parallel to each other and connected by the tubes 3. Said tubes 3 and said boxes 2 allow the circulation of said first fluid between them. Preferably, the dimensions of the fins 4, in plan, substantially correspond to those of the manifolds 2 for the purpose of compactness of the heat exchanger 1. In the case of an application as a cooling radiator of a motor vehicle engine, the heat transfer fluid from the tubes and passing through one of the manifolds, is fed, via a supply line, to different hot organs of the engine (engine block, cylinder head, ...) to be cooled for be returned, while being reheated, by a return line to the other manifold of the radiator to circulate again in the tubes. The heat exchange between the hot coolant circulating in the heat exchanger tubes and the air flow passing between said tubes for lowering the temperature of the coolant is favored by the presence of the fins whose shape, number and the material are chosen to optimize the evacuation of a large amount of heat in order to gradually bring the heat transfer fluid through the exchanger to an acceptable and effective temperature range for cooling the engine. The fluid supply and return connections provided in the respective boxes leading to and from the engine have not been shown. Said boxes 2 comprise a manifold plate 6 provided with passage orifices of said tubes 3. Said boxes 2 further comprise here a cover 8, attached to said manifold plate 6. Said cover 8 is, for example, of plastic material. This is, in particular, polyamide, in particular PA 6.6. As can be seen more clearly in FIG. 2, said cover 8 may have reinforcing ribs 10. It may also incorporate one or more flanges 12 for fixing the exchanger, here located at its longitudinal ends, and / or one or more tubing 14 inlet and / or outlet of the first fluid, here between its longitudinal ends. According to the invention, said collecting plate is made of plastic material, in particular polyamide, in particular PA 6.6. Such a choice of material makes it possible to limit the effects of corrosion. In Figure 2, the cover 8 and the collector plate 6 are shown separately. Said cover 8 and said collector plate 6 may advantageously be fixed to one another by welding, especially by vibration, ultrasound, infrared, laser, heating or other.
    [0009] As illustrated in FIG. 3, said exchanger further comprises a plate 16 for holding said tubes 3. Here, there is provided such a holding plate 16 near each longitudinal end of said tubes 3. Said plate 16 is, for example, pierced. of orifices 18 through which the tubes 3 are held. In other words, said tubes 3 and said holding plate 16 are integral with each other, preferably in a non-removable manner. Said plate 16 is, for example, metallic. It is here of substantially rectangular shape. It should be noted in particular that said holding plate 16 is different from the fins 4. In particular, it is more resistant than these, in particular by the choice of a material and / or a thickness of different material. FIG. 4 shows the assembly of the heat exchanger bundle on box 2, according to the arrow marked 20. As illustrated in the following figures, at the end of this assembly, each holding plate 16 is fixed on one of the boxes 2. This ensures the immobilization of the tubes 3 relative to the boxes 2. Here, said holding plates 16 are externally attached to said boxes 2 and more particularly on said collector plates 6. To ensure a good seal between the boxes 2 and the tubes 3, the latter are advantageously force-fitted in said manifold plate 6. To further improve this result and how it is more visible in Figure 4, said exchanger may comprise a seal 22, in particular elastomer, traversed by said tubes 3. Said seal 22 advantageously for this purpose orifices 24 passages of the tubes. Said seal 22 here has a flat portion connecting annular parts, substantially projecting, forming sleeves or teats 26 at which said orifices 24 for passage of the tubes through the seal 22 are defined. In other words, each of said tubes 3 passes through one of said sleeves 26. Said seal 22 here is located outside said manifold 2.
    [0010] Said seal 22 is compressed between said tubes 3 and said header plate 6, at a contour of said orifices 24 provided in said manifold plate 6 for the passage of said tubes 3. In other words, here, the sleeves 26 are compressed, in the right of said collector plate 6, between the tubes 3 and a contour of the passage orifices of said tubes 3 formed in said collector plate 6. In other words, a part of the sleeves 26 is inserted into said passage orifices of the tubes 3 formed in the plate 6, or even extends axially to the inside of the manifold 2. Said tubes 3 advantageously have a flare 28 at their longitudinal ends. Said flaring 28 extends at least opposite said holding plate 16, said seal 22 and said collecting plate 6. Such a flare 28 promotes the holding of the tubes 3 in said holding plate 16, forcing them into the collector plate 6 and compression of the seal 22 between said tubes 3 and the collector plate 6.
    [0011] As illustrated in FIGS. 5 and 6, said holding plate 16 is removable relative to said manifold 2. In FIG. 5, said holding plate 16 is secured to the header plate 6 by lugs 30 provided on said header plate 6 and 32 lights provided on said holding plate 16, said lugs 30 snapping into said slots 32. In Figure 6, said holding plate 16 is secured to the collector plate 6 by crimping. For this, said manifold plate 6 is provided with housings 34, here regularly distributed along its periphery, at which crimping teeth 36 of the holding plate 16 are located. A method of manufacturing an exchanger as described above is described below. According to the invention, said tubes 3 are fixed on said holding plate 16, for example by flaring of the end of said tubes.
    [0012] A prior step of fixing the fins 4 may take place, also by flaring. For this, it will be possible to circulate an expansion olive deforming the tubes to a diameter slightly greater than that of the orifices provided in the fins 4 for the passages of said tubes. The flaring of the end of the tubes then takes place in a second time, to a still greater diameter.
    [0013] Furthermore, said manifold 2 is assembled, in particular by welding of the collecting plate 6 and the cover 8. In a subsequent step, said holding plate 16, and thus the heat exchange bundle, is hooked onto said header 2 , in particular using said lugs 30 and / or by crimping.
    [0014] In advance, these tubes 3 have advantageously been introduced into said collecting plate 6, in particular by forcing said tubes 3 into said collecting plate 6, thereby compressing the seal 22.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Heat exchanger, in particular for a motor vehicle, said exchanger comprising a heat exchange bundle between a first and a second fluid, said bundle comprising a plurality of tubes (3) and a manifold (2), said tubes (3) and said box (2) allowing the circulation of said first fluid between them, said exchanger further comprising a plate (16) for holding said tubes (3), said plate (16) being fixed on said box (2), said box ( 2) comprising a collector plate (6) provided with passage orifices of said tubes (3), said collector plate (6) being made of plastic material.
    [0002]
    2. Exchanger according to the preceding claim wherein said holding plate (16) is externally attached to said box (2).
    [0003]
    3. Exchanger according to any one of the preceding claims wherein said holding plate (16) is attached to said header plate (6).
    [0004]
    4. Exchanger according to any one of the preceding claims wherein said box (2) comprises a cover (8), attached to said header plate (6).
    [0005]
    5. Exchanger according to the preceding claim wherein said cover (8) is made of plastic material.
    [0006]
    6. Exchanger according to any one of claims 4 or 5 wherein said cover (8) and said collector plate (6) are fixed by welding.
    [0007]
    7. Exchanger according to any one of the preceding claims wherein said exchanger further comprises a seal (22) traversed by said tubes (3).
    [0008]
    8. Exchanger according to the preceding claim wherein said seal (22) is located outside of said manifold (2).
    [0009]
    9. Exchanger according to any one of claims 7 or 8 wherein said seal (22) is compressed between said tubes (3) and said header plate (6) at a contour of said holes provided in said header plate (6). ) for the passage of said tubes (3).
    [0010]
    10. Exchanger according to any one of the preceding claims wherein said tubes (3) have a flare (28) at their ends, said flare (28) extending at least opposite said holding plate (16). and / or said collecting plate (6).
    [0011]
    11. Exchanger according to any one of the preceding claims wherein said holding plate (16) is removable relative to said manifold (6).
    [0012]
    12. A method of manufacturing an exchanger according to any one of the preceding claims, said method comprising: - a step of fixing said tubes (3) on said holding plate (16), - a step of attachment of said plate holding (16) on said manifold (2).
    [0013]
    13. Method according to the preceding claim wherein said step of fixing the tubes (3) in the holding plate (16) comprises a step of flaring said tubes (3) in said holding plate (16).
    [0014]
    14. Method according to any one of claims 12 or 13 wherein said method comprises a step of introducing said tubes (3) into said header plate (6), subsequent to the step of fixing said tubes (3) on said holding plate (16) and / or prior to the attachment step of said holding plate (16) on said manifold (2).
    [0015]
    15. The method of claim 14 wherein said step of introducing said tubes (3) into said header plate (6) comprises a step of forcing said tubes (3) into said header plate (6).
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    同族专利:
    公开号 | 公开日
    FR3026169B1|2019-03-22|
    CN107110610A|2017-08-29|
    WO2016046291A1|2016-03-31|
    EP3198209A1|2017-08-02|
    EP3198209B1|2019-02-20|
    MX2017003848A|2018-03-01|
    US20170299288A1|2017-10-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    2015-09-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-25| PLSC| Search report ready|Effective date: 20160325 |
    2016-09-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-09-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-30| PLFP| Fee payment|Year of fee payment: 6 |
    2020-09-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-09-30| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1459037A|FR3026169B1|2014-09-24|2014-09-24|HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE, AND METHOD FOR MANUFACTURING SUCH A HEAT EXCHANGER|
    FR1459037|2014-09-24|FR1459037A| FR3026169B1|2014-09-24|2014-09-24|HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE, AND METHOD FOR MANUFACTURING SUCH A HEAT EXCHANGER|
    EP15774546.4A| EP3198209B1|2014-09-24|2015-09-23|Heat exchanger, especially for motor vehicle, and method for producing such a heat exchanger|
    US15/513,702| US20170299288A1|2014-09-24|2015-09-23|Heat exchanger, especially for motor vehicle, and method for producing such a heat exchanger|
    CN201580058007.1A| CN107110610A|2014-09-24|2015-09-23|Heat exchanger, it is especially useful in the heat exchanger of motor vehicles, and the method for manufacturing this heat exchanger|
    PCT/EP2015/071922| WO2016046291A1|2014-09-24|2015-09-23|Heat exchanger, especially for motor vehicle, and method for producing such a heat exchanger|
    MX2017003848A| MX2017003848A|2014-09-24|2015-09-23|Heat exchanger, especially for motor vehicle, and method for producing such a heat exchanger.|
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