• 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 collector (10) for a motor vehicle heat exchanger configured to receive heat exchange tubes (12). The collector comprises: - a metal plate (18) intended to be traversed by the tubes (12) and comprising two longitudinal edges (26) for crimping the collector (10) on a collector box (16), and - a plate ( 22) comprising a polymeric material superimposed on the metal plate (18) and provided with receiving orifices (42) of the tubes (12).
    公开号:FR3020671A1
    申请号:FR1454042
    申请日:2014-05-05
    公开日:2015-11-06
    发明作者:Samuel Bry；Patrick Boisselle；Erwan Etienne
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to the field of heat exchangers, in particular for motor vehicles. More specifically, the invention relates to a manifold for a heat exchanger comprising a bundle of tubes and at least one manifold, also called water box.
    [0002] Generally, the collector receives the tubes through tube receiving orifices which are openings made at regular intervals in the collector, these intervals defining a pitch of the tubes. In order to improve the thermal exchange performance of the exchanger, the pitch of the tubes can be reduced, which allows the collector to be able to accommodate a larger number of tubes. We know that an aluminum collector can not accommodate as many tubes as it would be possible to do with a steel collector because we can not reduce the pitch of the tubes below a certain value. This is because the mechanical strength of an aluminum collector must be large enough to withstand the pressure of a coolant during normal use of the exchanger, and thus the aluminum thickness of the heat exchanger. such a collector must not be less than 1.2 millimeters. Since this type of manifold is made by stamping, if an aluminum thickness greater than or equal to 1.2 mm is used, it is no longer possible to obtain a reduced pitch of the tubes. Indeed, it is not possible to make a stamping die 20 which makes it possible at the same time to obtain a combined reduced tube pitch with a thickness greater than or equal to 1.2 mm, since in this case there would not be enough left over. space for the material of the matrix between the receiving holes of the tubes. For example, document WO 2009/058395 discloses a collector which comprises a tube-receiving part made of aluminum, which also acts as a collecting box and comprises a plastic reinforcement. This reinforced manifold makes it possible to reduce the thickness of material used for the collector and the tubes. However, the collector of the prior art does not reduce the pitch of the tubes sufficiently to accommodate a larger number of tubes in order to improve the heat efficiency of the exchanger. Thus, the collector of the prior art 30 does not allow the exchanger to achieve optimal thermal performance. Moreover, due to the fact that this collector comprises a large ribbing of the header to be able to withstand the internal pressure of the exchanger, this solution of the prior art is complex to achieve, expensive and increases the overall mass of the exchanger. The present invention aims to overcome the aforementioned drawbacks by providing in particular a collector capable of receiving a larger number of tubes and whose mass is decreased. To this end, the invention relates to a collector for a motor vehicle heat exchanger, configured to receive heat exchange tubes, comprising: a metal plate intended to be traversed by the tubes and having two longitudinal edges for the crimping the manifold on a manifold, and a plate comprising a polymeric material, superimposed on the metal plate and provided with tube receiving orifices. In the following, the term "polymer plate" refers to the plate comprising a polymeric material. Thus, the above collector is reinforced by the polymer plate, which allows the use of an aluminum metal plate whose thickness is less than 1.2 mm. Advantageously, the reduction in thickness of the metal plate of the collector makes it possible to manufacture it by stamping by reducing the pitch of the tubes to values similar to those encountered on the steel collectors. Thus, such a manifold can accommodate a larger number of heat exchange tubes. This results in an improvement in the heat efficiency of the exchanger, while the mass of the collector is reduced. In addition, since the polymer plate strengthens the pressure resistance and improves the seal between the tubes, such a collector is less subject to failures such as coolant leaks, for example. In fact, such a collector improves the reliability and the lifetime of the exchanger. By "superimposed" is meant that the polymer plate is located above the metal plate, without being in direct contact therewith. Thus, it is understood that a seal may be interposed between these two superposed plates. It is specified that the receiving orifices are orifices for passage of the tubes through the plate which is intended to be traversed by the tubes. The collector may further comprise one or more of the following features, taken alone or in combination. A wall of the polymer plate is configured so that the ends of the tubes come flush with this wall. Thus, the tubes do not protrude from the polymer plate and therefore their ends do not protrude inside the manifold, which eliminates turbulence flow phenomena of the fluid in the manifold. The polymer plate has a generally flat shape and has a thickness of between 3 and 8 millimeters, preferably around 5 millimeters. The respect of this thickness range for the polymer plate significantly improves the mechanical strength of the collector and also makes it possible to reduce the thickness of the metal plate. The polymer plate comprises means for stiffening the header box, these means preferably comprising pion receiving orifices formed in the manifold. Advantageously, these stiffening means improve the stability and cohesion of the manifold with respect to the manifold, which limits the risk of leakage of the exchanger. A seal is arranged between the metal plate and the polymer plate. Advantageously, this seal provides a double sealing function, namely the seal between the tubes and the manifold and the seal between the manifold and the manifold. Furthermore, the seal serves as a connecting element between the two plates, which facilitates the handling operations of the collector during assembly of the exchanger. The seal has a flat portion, sandwiched between the metal plate and the polymer plate, and preferably provided with chimneys configured to be shod around the tubes. Such stacks improve the seal between the tubes and the tube receiving holes. The seal comprises a peripheral bead for sealing between on the one hand the manifold and on the other hand at least one of the two plates. Thus, this bead avoids the risk of leakage of the exchanger. The tube-receiving orifices provided on the polymeric plate include a seal-retaining shoulder configured so that the seal is pressed against that shoulder when a tube is received in the receiving port. Thus, the seal is easier to position on the manifold and its positioning is durably improved. The invention also relates to a plate comprising a polymer material for a collector as described above. The invention also relates to a seal for a collector as described above.
    [0003] The invention also relates to a header and a collector as described above. The invention will be better understood on reading the appended figures, which are provided by way of example and are not limiting in nature, in which: FIG. 1 is a perspective view of a collector according to a first embodiment; on which is arranged a bundle of tubes, - Figure 2 is a perspective view of a collector according to a second embodiment. Referring to Figure 1, there is shown a manifold 10 for a heat exchanger of a motor vehicle. In the example, the exchanger is a radiator provided with a row of heat exchange tubes 12 intended to conduct a coolant in the exchanger. It could alternatively be another type of exchanger, such as for example a charge exchanger. The manifold is configured to receive the tubes 12 of the exchanger at their ends 14 and to be assembled with a header box 16. In this example, the manifold 10 is constituted by a metal plate 18, a seal 20 and a plate of polymeric material 22, hereinafter referred to as a polymer plate. The metal plate 18 is intended to be traversed by the tubes 12 and to be crimped on the manifold 16. For this purpose, the metal plate 18 is a stamped sheet having a central rectangular panel 24 provided with oval openings 25 regularly spaced and 12. The metal plate 18 is provided with lateral panels forming longitudinal 26 and transverse folded edges (not shown) for crimping the manifold 10 on the manifold 16. These edges 26 comprise crimping teeth 28. of rectangular shape which are intended to facilitate the crimping operation of the metal plate 18. The seal 20 is arranged between the metal plate 18 and the polymer plate 22. For this purpose, it comprises a portion plate 30, sandwiched between the metal plate and the polymer plate. This flat portion 30 of rectangular shape is provided with chimneys 32 configured to be shod around the tubes 12. These 5 chimneys 32 have an oval shape and protrude on each side of the flat portion 30 of the seal, that is to say they comprise upper parts 34 projecting from the collecting box 16 and lower parts 36 projecting below the flat portion of the seal. The chimneys 32 comprise lips 38 arranged on the side walls of the upper parts 34. These lips 38 are provided to bear against a shoulder 40 formed in the orifices 42 for receiving the tubes of the polymer plate. Thus, on the one hand they form bearing surfaces facilitating the positioning of the seal, and on the other hand they participate in the seal between the manifold and the collector. The seal comprises a peripheral bead 44 intended to seal between 15 on the one hand the manifold 16 and on the other hand at least one of the two plates 18, 22. The seal is made of a conventionally used elastomeric material in heat exchangers and well known to those skilled in the art. The polymer plate 22 is superimposed on the metal plate 18 for receiving the tubes. The tube receiving ports 42 have an oblong shape contour while the shoulder 40 of the seal retainer 20 has a substantially oval shape. Each shoulder 40 is configured so that the lip 38 of the seal is pressed against this shoulder 40 when a tube 12 is received in a receiving orifice 42. In the example, the tubes are slightly flared at their ends 14, which improves the plating of the chimney 32 of the seal against the shoulder 40.
    [0004] The polymeric plate 22 comprises stiffening means 46, 48 of the manifold 16, these means comprising, along each edge of the plate 22, rows of receiving holes of stiffening pins 48 formed in the manifold 16 Each hole opens laterally into the side face 23 of the polymer plate 22 forming a slot. The edges 49 of the slot are separated by a distance less than the diameter of each orifice. It is therefore clear that these orifices are shaped so as not to allow the stiffening pins 48 laterally to leave the polymer plate 22 and to keep them perpendicular to the plate 22. These stiffening means are therefore configured to better withstand the tensile and rotational forces. which are induced by a spacing of the side walls 39 of the manifold under the effect of the pressure of the fluid inside the exchanger. Thus, there is less distortion of the manifold 16 and can significantly reduce the number of reinforcing ribs to improve rigidity. To manufacture the polymer plate 22 it is recommended to use a thermosetting polymer material, but other alternatives including thermoplastics or composite materials are also conceivable. The thickness of the polymer plate 22 is between 3 and 8 millimeters and preferably close to 5 millimeters. The manifold 16 forms a lid on the top of the manifold. It is made from a thermosetting material. A portion 52 of the manifold 16 which faces an upper wall 54 of the polymer plate 22 has a half-cylinder profile to withstand the pressure of the fluid. This half-cylindrical portion 52 of the manifold is extended on its sides by the side walls 39 each having a step 56, also called "sidewalk" by the skilled person. Inside the manifold 16, the step 56 defines an internal shoulder 58 which is intended to bear against the plate of polymer material 22. The internal shoulder 58 carries the stiffening pins 48 oriented towards the polymer plate. Each pin is connected to the step 56 by a strip of material 57 forming an internal stiffening rib of the manifold 16. This strip of material 57 is provided to be able to pass through one of the slots 49. Outside the box 16, the step 56 forms an outer shoulder 60 for receiving the crimping teeth 28 when they are bent after the crimping step. Due to the fact that the collector is reinforced by the polymer plate 22 but also because of the presence of the stiffening means 46, 48 of the manifold, it is possible to optimize (reduce or eliminate) the number of ribs reinforcement. The top of the flat portion 30 of the seal accommodates the polymer plate 22, with the chimneys 32 surrounding the heat exchange tubes 12 and the peripheral bead 44 surrounding the polymer plate 22. More specifically, the chimneys 32 project beyond above the seal 20 by surrounding the ends 14 of the tubes 12 and flush with the upper wall 54 of the polymer plate 22. This upper wall 54 is configured so that the ends 14 of the tubes arrive, like the chimneys 32, flush with this wall. According to a second embodiment shown in FIG. 2, the tubes of the exchanger have straight ends, that is to say ones which do not comprise retaining flares, that is to say one widening of the tubes whose function is to prevent the sliding of said tubes towards the outside of the manifold 16.
    [0005] With regard to the polymer plate, the latter has openings whose contour corresponds throughout its height to the oval profile of the tubes, that is to say that the orifices of the plate do not include a shoulder. As a result, the upper parts of the chimneys of the seal have a profile identical to that of the tubes and are devoid of lip. This embodiment, of simpler design, makes it possible to lower the manufacturing cost of the exchanger. The collector 10 is not limited to the embodiments shown and other embodiments will become apparent to those skilled in the art. It is in particular possible to vary the general shape of the polymer plate 22. As it is molded, it is relatively easy to provide that it comprises volume shapes 15 or to provide that it comprises reliefs intended for example to simplify the positioning of the tubes 12 in the receiving holes 42. Moreover, to further simplify the manufacture, it is also conceivable not to provide stiffening means 46, 48, but in this case the manifold will need to be more ribbed.
    权利要求:
    Claims (11)
    [0001]
    REVENDICATIONS1. Collector (10) for a motor vehicle heat exchanger, configured to receive tubes (12) for heat exchange, characterized in that it comprises: a metal plate (18) intended to be traversed by the tubes (12) and having two longitudinal edges (26) for crimping the manifold (10) on a manifold (16), and - a plate (22) comprising a polymeric material superimposed on the metal plate (18) and provided with receiving orifices (42) tubes.
    [0002]
    2. A collector according to the preceding claim, wherein a wall (54) of the polymer plate (22) is configured so that the ends (14) of the tubes (12) are flush with the wall (54).
    [0003]
    3. A collector according to any one of the preceding claims, wherein the polymeric material plate (22) has a generally flat shape and has a thickness of between 3 and 8 millimeters, preferably about 5 millimeters.
    [0004]
    4. A collector according to any one of the preceding claims, wherein the polymeric plate (22) comprises stiffening means (46, 48) of the manifold (16), these means preferably comprising receiving orifices (42). of pins (48) formed in the manifold (16). 20
    [0005]
    5. A collector according to any one of the preceding claims, comprising a seal (20) arranged between the metal plate (18) and the polymer plate (22).
    [0006]
    6. A collector according to the preceding claim, wherein the seal (20) comprises a flat portion (30), sandwiched between the metal plate (18) and the polymer plate (22), and preferably provided with chimneys (32). ) configured to be shod around the tubes (12).
    [0007]
    7. Manifold according to any one of claims 5 or 6, wherein the seal (20) comprises a peripheral bead (44) for sealing between on the one hand the manifold (16), and other share at least one of the two plates (18, 22). 30
    [0008]
    A manifold according to any one of claims 5 or 7, wherein the receiving orifices (42) of the tubes (12) provided on the polymeric plate (22) comprise a shoulder (40) for retaining the seal, so configured that the seal (9) is pressed against this shoulder (40) when a tube is received in a receiving port (42).
    [0009]
    Polymeric plate (22) for a collector (10) according to any one of the preceding claims.
    [0010]
    Seal (20) for a manifold (10) according to any one of claims 5 to 8.
    [0011]
    11. Heat exchanger comprising a manifold (16) and a manifold (10) according to any one of claims 1 to 8.
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    同族专利:
    公开号 | 公开日
    EP3140604A1|2017-03-15|
    FR3020671B1|2016-06-10|
    US10180290B2|2019-01-15|
    JP2017515086A|2017-06-08|
    CN106461356B|2020-03-13|
    MX2016014497A|2017-05-23|
    WO2015169807A1|2015-11-12|
    CN106461356A|2017-02-22|
    KR20160145137A|2016-12-19|
    US20170074601A1|2017-03-16|
    引用文献:
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    法律状态:
    2015-06-01| PLFP| Fee payment|Year of fee payment: 2 |
    2015-11-06| PLSC| Search report ready|Effective date: 20151106 |
    2016-05-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-05-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-05-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-05-31| PLFP| Fee payment|Year of fee payment: 6 |
    2020-05-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-05-31| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1454042A|FR3020671B1|2014-05-05|2014-05-05|COLLECTOR FOR A THERMAL EXCHANGER OF A MOTOR VEHICLE|FR1454042A| FR3020671B1|2014-05-05|2014-05-05|COLLECTOR FOR A THERMAL EXCHANGER OF A MOTOR VEHICLE|
    KR1020167031807A| KR20160145137A|2014-05-05|2015-05-05|Header for a heat exchanger of a motor vehicle|
    EP15720987.5A| EP3140604A1|2014-05-05|2015-05-05|Header for a heat exchanger of a motor vehicle|
    MX2016014497A| MX2016014497A|2014-05-05|2015-05-05|Header for a heat exchanger of a motor vehicle.|
    JP2016566713A| JP2017515086A|2014-05-05|2015-05-05|Automotive heat exchanger header|
    US15/308,851| US10180290B2|2014-05-05|2015-05-05|Header for a heat exchanger of a motor vehicle|
    CN201580027605.2A| CN106461356B|2014-05-05|2015-05-05|End socket for heat exchanger of motor vehicle|
    PCT/EP2015/059865| WO2015169807A1|2014-05-05|2015-05-05|Header for a heat exchanger of a motor vehicle|
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