• 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:
    A cooling unit (1) for a motor compartment of a motor vehicle comprises on the one hand a housing configured to be traversed by an air flow (FA), the housing being delimited by a plurality of peripheral walls (11, 12, 13), and on the other hand at least one heat exchanger (3, 4) encapsulated in this housing (7). According to the invention, at least one sealing device (16, 17, 18) is arranged laterally with respect to the at least one heat exchanger (3, 4), the at least one sealing device (16 , 17, 18) being disposed in contact with this at least one heat exchanger (3, 4) and in contact with another heat exchanger (3, 4) or one of the peripheral walls.
    公开号:FR3070321A1
    申请号:FR1757949
    申请日:2017-08-29
    公开日:2019-03-01
    发明作者:Jean-Paul Herlem；Stephan Andre
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    The present invention relates to the field of cooling of motor vehicle engines and more particularly to the field of heat exchangers intended to be integrated into an engine compartment.
    The normal operation of a motor vehicle requires the supply and capture of a large quantity of air, for the supply of air to the engine or to one of its elements such as the turbocharger, or for the cooling of an element of the engine or the passenger compartment of the vehicle.
    This significant amount of air is captured by the front of the vehicle. Part of the air flow thus captured is brought through a cooling system, also called a “cooling unit”, disposed between the front face of the vehicle and the vehicle engine, before being admitted into the engine to allow the combustion of fuel or to be used for the cooling of an element of this engine for example. The cooling unit may in particular include heat exchangers forming part of a thermal loop for air conditioning the passenger compartment.
    A fan can also be provided to force the supply of air, for example when the vehicle is stationary.
    A major drawback of these cooling units is that part of the air arriving from the front of the vehicle does not pass through the heat exchanger (s) and dissipates spontaneously in the engine compartment. Such a drawback makes it necessary to provide relatively large heat exchangers in order to ensure a sufficient heat exchange surface to obtain the desired cooling performance in the circulation loops passing through these heat exchangers.
    In order to limit this dissipation of air entering the engine compartment, the heat exchangers of the cooling unit can be encapsulated in a closed housing. This housing then comprises at least two peripheral walls arranged transversely to the flow of air entering the cooling unit and at a distance from one another. These two peripheral walls are connected to one another by a plurality of other peripheral walls configured to guide the air flow so that it passes through the heat exchangers arranged in the housing.
    The various peripheral walls delimiting the housing thus make it possible to channel the air flow in an attempt to pass a maximum of air through the heat exchangers encapsulated in this housing. However, it is understood that inside the housing, even if the air flow is directed mainly from the first peripheral wall towards the second peripheral wall, in particular by the action of the fan, the air remains free to circulate where he wants in the housing and that there are then two issues.
    On the one hand, we can witness a phenomenon of recirculation of hot air. Indeed, the air having passed through a heat exchanger of the cooling unit can bypass this exchanger to pass from the downstream to the upstream of the exchanger. Having hot air at the inlet of the exchanger reduces the efficiency of this exchanger as well as the efficiency of the following heat exchanger (s), which can also be traversed by warmer air. It is understood that in the case of a plurality of stacked heat exchangers, this recirculation of hot air can be observed at the outlet of each heat exchanger of the cooling unit.
    On the other hand, part of the air entering the housing of this cooling unit can also pass between walls of the housing and the heat exchangers rather than through the latter and it is understood that the efficiency of the heat exchangers heat is impacted.
    The present invention is part of this context and aims to improve the performance and efficiency of such cooling units and thus makes it possible to reduce the size of the heat exchangers while retaining the same cooling capacities. The reduction in the size of these heat exchangers makes it possible to reduce the size of the box which contains them and thus to reduce the overall weight of the vehicle, intimately linked to its fuel consumption. In addition, the use of smaller cooling units saves valuable space in such an engine compartment.
    The object of the present invention thus relates to a cooling unit for an engine compartment of a motor vehicle, the engine compartment can for example be arranged upstream of the vehicle engine, said cooling unit comprising on the one hand a configured housing to be crossed by an air flow, for example an air flow entering the vehicle in a first longitudinal direction, the housing being delimited by a plurality of peripheral walls, and on the other hand at least one encapsulated heat exchanger in this case. According to the invention at least one sealing device is arranged laterally with respect to the at least one heat exchanger, the at least one sealing device being arranged in contact with this at least one heat exchanger and in contact another heat exchanger or one of the peripheral walls.
    The housing of the cooling unit according to the present invention can thus be delimited by a front peripheral wall arranged transversely to the air flow and a rear peripheral wall also arranged transversely to the air flow and at a distance from the front peripheral wall, this front peripheral wall and this rear peripheral wall being interconnected by two lateral peripheral walls, by an upper peripheral wall and by a lower peripheral wall. These peripheral walls are arranged so that the air flow enters the housing through the front peripheral wall of the housing and exits therefrom through the rear peripheral wall of this housing, the other peripheral walls making it possible to channel and guide, at least in part, the air flow. It is understood that the terms "front", "rear", "upper" and "lower" refer to an orientation of the housing of the cooling unit integrated in a given vehicle but are not limiting of the orientation that can take such a case.
    According to one aspect of the present invention, the housing accommodates at least a first heat exchanger and a second heat exchanger, the first heat exchanger being the heat exchanger closest to the front peripheral wall and the second heat exchanger being the heat exchanger closest to the rear peripheral wall. In other words, the air flow enters the housing through the front peripheral wall and passes, in this order, the first heat exchanger then the second heat exchanger before passing through the rear peripheral wall to exit this housing .
    It is understood that the at least one sealing device according to the invention is intended at least in part to guide the circulation of air through heat exchangers.
    Advantageously, this at least one sealing device can also make it possible to avoid recirculation of hot air after the flow of air has passed through a heat exchanger. “Hot air recirculation” means a situation in which the air passes over the sides of the heat exchanger it has just passed through, that is to say between these heat exchangers and the peripheral walls of the cooling unit housing before being reinjected upstream of these heat exchangers. In other words, this at least one sealing device makes it possible to prevent the air which has already passed through one of the heat exchangers from rising upstream of this heat exchanger, according to the direction of circulation of the air flow, which would cause a new passage of this air, now heated, through said heat exchanger.
    By limiting this phenomenon of air recirculation, the present invention makes it possible to improve the performance of all the heat exchangers of the cooling unit.
    According to the invention, the at least one heat exchanger comprises a heat exchange zone and at least one manifold disposed at a lateral end of this heat exchange zone, the at least one sealing device being arranged in contact with at least one of these manifolds. The fact that the manifold is arranged laterally with respect to the heat exchangers means that this box is arranged outside the heat exchange zone of the concerned heat exchanger.
    According to the invention, it is thus possible to provide that a sealing device is disposed either between the at least one manifold of a heat exchanger and one of the peripheral walls of the housing of the cooling unit, or between the at least one manifold of the first heat exchanger and the at least one manifold of the second heat exchanger.
    According to a characteristic of the present invention, at least one sealing device can be disposed between the at least one manifold of one of the heat exchangers and a rib projecting from one of the peripheral walls of the housing.
    Advantageously, the rib is formed projecting from the front peripheral wall of the housing. This rib thus makes it possible to create a space with controllable dimensions between the front peripheral wall by which the air flow enters the housing and the first heat exchanger, which makes it possible to increase the amount of air passing through this first heat exchanger. heat.
    Insofar as a first heat exchanger and a second heat exchanger are stacked in the housing along the first longitudinal direction, it can be provided that at least one first sealing device is disposed between the at least one box manifold of the first heat exchanger and at least one manifold box of the second heat exchanger and at least one second or third sealing device is disposed between the at least one manifold box of one of the heat exchangers and one of the peripheral walls of the housing, this peripheral wall being arranged transversely to the air flow entering the vehicle.
    More particularly, the second sealing device can be arranged between the at least one manifold of the first heat exchanger and the front peripheral wall arranged transversely to the air flow entering the vehicle and a third sealing device can be disposed between the at least one manifold of the second heat exchanger and the rear peripheral wall of the housing, this rear peripheral wall being arranged transversely to the air flow and at a distance from the front peripheral wall of this housing.
    it is understood that other combinations are possible without departing from the context of the invention. For example, the cooling unit according to the present invention may comprise only the first sealing device and the third sealing device.
    According to a characteristic of the present invention, each manifold of the heat exchangers of the cooling unit extends mainly in a second vertical direction, perpendicular to the first longitudinal direction, at least one sealing device extending over all a vertical dimension of at least one of these manifolds, along the second vertical direction.
    Advantageously, each sealing device disposed in the housing of the cooling unit can extend over the entire vertical dimension of at least one of the manifolds of at least one of the heat exchangers, along from the second vertical direction.
    The seal between the heat exchangers can thus be ensured over this entire vertical dimension, as well as the seal between the heat exchangers and the peripheral walls of the housing. The air flow having already passed through at least one of the heat exchangers of the cooling unit is thus directed to the vehicle engine or to the next heat exchanger and cannot re-circulate, this is that is, this air flow cannot pass a second time through the at least one heat exchanger that it has already passed through. In other words, this air flow can neither pass between the manifolds nor between a manifold and one of the peripheral walls of the housing. The device (s) for sealing the cooling unit according to the present invention thus allows (tent) guidance of the air flow so that it passes, on the one hand through each of the stacked heat exchangers and d On the other hand, this air flow only passes once through each of them.
    Optionally, the first lateral end of one of the heat exchangers can be symmetrical with the second lateral end of this same heat exchanger, with respect to a plane in which the first longitudinal direction and the second vertical direction are inscribed. Thus, the cooling unit according to the present invention, in which two heat exchangers are arranged in a housing configured for their encapsulation, can comprise up to six sealing devices, respectively arranged between one of the lateral ends of the either of the heat exchangers and one of the peripheral walls of the housing of this cooling unit or between the lateral ends of these heat exchangers.
    According to a characteristic of the present invention, at least one of the sealing devices is attached to at least one heat exchanger. In other words, this sealing device is produced independently of the heat exchangers and it is fixed by fitting or gluing, for example, to a corresponding receiving member, formed on the heat exchanger or on a peripheral wall of the housing.
    According to this characteristic, the heat exchangers on which the sealing devices are intended to be arranged include rebates configured to allow the fixing of these sealing devices. These rebates are made laterally with respect to the central heat exchange zone and can for example be made on the manifolds of the heat exchangers concerned.
    According to another characteristic of the present invention, at least one sealing device can be produced by a molded lip on one of the manifolds of at least one of the heat exchangers concerned.
    In this context, the manifold has a slot in which is arranged a base of the at least one molded sealing device.
    According to this other characteristic, the at least one lip thus overmolded must have a dimension greater than the spacing formed between the heat exchangers in contact with which this at least one lip is disposed or else between the heat exchanger and the peripheral wall. of the housing in contact with which this at least one lip is disposed. In order to ensure a seal, this at least one lip must in fact be placed in contact with the elements between which this seal must be ensured.
    It is understood that all of these sealing devices make it possible to prevent the air flow from bypassing the heat exchangers of the cooling unit, which could, as specified above, reduce the thermal performance of this cooling unit.
    The present invention also relates to a motor vehicle comprising at least one cooling unit according to the present invention.
    Other details, characteristics and advantages will emerge more clearly on reading the detailed description given below for information, in relation to the various embodiments illustrated in the following figures:
    FIG. 1 is an exploded view of a cooling unit of an engine compartment according to the present invention, in which a device for regulating the air intake in this cooling unit, two exchangers has been made visible heat and a fan;
    FIG. 2 is a top view of the cooling unit shown in FIG. 1, once assembled;
    FIG. 3 is a schematic representation, from the side, of the cooling unit according to the invention, on which the elements contained in this cooling unit have been made visible;
    - Figures 4 and 5 are partial schematic representations of the cooling unit according to the invention illustrating two embodiments of the present invention.
    In Figure 1 are illustrated various elements that can be included in a cooling unit 1 intended to be integrated in an engine compartment of a vehicle according to the present invention.
    Such a cooling unit 1 is intended to be placed on the front face of a motor vehicle and to be traversed by an air flow FA in a first longitudinal direction X, as illustrated in FIG. 1.
    Thus, the air flow FA enters the cooling unit 1 by a device 2 for regulating the air intake, passes through a first heat exchanger 3 then a second heat exchanger 4 before passing through a fan 5 to join the engine - not illustrated here - of the vehicle in which this cooling unit 1 is integrated, this engine being located downstream of this cooling unit 1, relative to the direction of circulation of the air flow FA.
    The device 2 for regulating the air intake can for example be produced by a grille 2s, 2i with adjustable flaps as illustrated in FIG. 1. This grille 2s, 2i comprises an upper part 2s and a lower part 2i fixed one on the other and stalling one with respect to the other.
    According to an embodiment of the present invention, the first heat exchanger 3 can be a condenser and the second heat exchanger 4 can in turn be a radiator. The radiator allows the cooling of the heat engine via an exchange between the outside air and a cooling liquid circulating in this radiator while the condenser is an element of an air conditioning circuit with an exchange network between the air flow. incoming and a refrigerant.
    The fan 5 makes it possible to force the air supply into the cooling unit 1 when this air supply is no longer sufficient, for example in situations in which the vehicle is stopped or at least slowed down, disrupting this air intake. 11 is here integrated into a fairing 6, which as illustrated in FIG. 1, can have two lateral references 8, a lower edge 9 and a bottom wall 10 in which the fan 5 is integrated.
    According to the present invention, these elements of the cooling unit 1, and in particular the heat exchangers 3> 4> are encapsulated in a box 7 notably illustrated in FIGS. 2 and 3 · This box 7 can for example be formed by the grille 2s, 2i carrying the device 2 for regulating the air intake and / or by the fairing 6 integrating the fan 5 and may also include a closure cover, not shown here.
    According to the present invention, this housing 7 has four peripheral walls: a front peripheral wall 11, a rear peripheral wall 12, these front and rear peripheral walls 11, 12 being arranged across the air flow FA, that is to say say perpendicular to the first longitudinal direction X, and two lateral peripheral walls 13 which connect the front peripheral wall 11 to the rear peripheral wall 12 extending parallel to this first longitudinal direction X. The housing 7 further comprises a cover and a bottom wall connecting, respectively, the four peripheral walls to each other. In other words, the cover extends between the upper end edges of the peripheral walls and the bottom wall extends between the lower end edges of these peripheral walls, this cover and this bottom wall can thus be inscribed in two distinct parallel or substantially parallel planes.
    it is understood that the terms "upper" and "lower" refer to an orientation of the cooling unit in a given application example but that these terms are not limiting of the orientation that said cooling unit can take.
    For example, the front and rear peripheral walls 11, 12 can be produced respectively by the grille 2s, 2i carrying the device 2 for regulating the air intake and by the bottom wall 10 of the fairing 6.
    It is therefore understood that the housing 7 is a housing for encapsulating the heat exchangers 3, 4 of the cooling unit 1 which makes it possible to direct the entire flow of air entering this cooling unit 1 to these heat exchangers. heat 3, 4 and thus limit air loss.
    In other words the heat exchangers 3, 4 are encapsulated in this housing 7, or in other words, the housing 7, and in particular the peripheral walls 11, 12, 13 are arranged so as to ensure the complete flow of the flow d through the heat exchangers 3,4 without loss or leakage of the air flow.
    FIG. 2 illustrates the cooling unit 1 according to the present invention, seen from above, comprising in particular the housing 7 from which the closure cover has been removed in order to leave visible the elements included in this housing 7 ·
    As previously mentioned, this cooling unit 1 comprises, in order along the first longitudinal direction X, the front peripheral wall 11 formed by the shell 2s, 2i, the first heat exchanger 3, the second heat exchanger 4 and the rear peripheral wall 12 which carries the fan 5 · As can be seen in this figure 2, the front peripheral wall 11 extends laterally to the rear peripheral wall 12, thus forming the two lateral peripheral walls 13 of the housing 7 ·
    According to an exemplary embodiment illustrated in FIG. 2, each heat exchanger 3, 4 comprises a central heat exchange zone 14 which extends between two lateral manifolds 15, respectively arranged at each of the lateral ends of the exchanger of heat 3, 4 concerned. The term “lateral ends” means the ends of these heat exchangers 3, 4 closest to the lateral peripheral walls 13 left and / or right of the housing 7 ·
    Each of these heat exchangers 3, 4 also includes a first face 3θ> 4θ facing the front peripheral wall 11 of the housing 7 and a second face 3f 4L opposite the first face 3θ> 4θ and facing the rear peripheral wall 12 of the housing 7 · Each of these faces 3θ> 4θ> 3L 41 includes a portion of the heat exchange zone 14 of the heat exchanger 3, 4 concerned as well as the manifolds 15 disposed laterally to this exchange zone heat 14 ·
    It is understood that the heat exchange zone 14 of a heat exchanger 3, 4 is thus delimited on the one hand longitudinally by the first face 3θ> 4θ and by the second face 3L 41 of the heat exchanger 3, 4 concerned and on the other hand transversely by the lateral manifolds 15 of this heat exchanger 3, 4 ·
    Once these heat exchangers 3, 4 encapsulated in the housing 7, it is understood that the first face 4θ of the second heat exchanger 4 therefore faces the second face 31 of the first heat exchanger 3 ·
    According to another exemplary embodiment not illustrated here, each heat exchanger comprises a single manifold box then arranged at one of the lateral ends of the concerned heat exchanger.
    Whatever the embodiment of the present invention, the heat exchange zone 14 of each heat exchanger 3, 4 is configured to allow heat exchange between the air flow FA entering and circulating in the cooling unit 1 and a fluid which circulates in this heat exchange zone 14 ·
    As previously described, the cooling unit 1 is configured so that the air flow FA passes first through the first heat exchanger 3 then, secondly, the second heat exchanger 4 before joining the engine. of the vehicle, located downstream of this cooling unit 1.
    As mentioned above, the housing 7 makes it possible to limit the most significant air losses in order to maximize the efficiency of the heat exchangers 3, 4 of the cooling unit 1. According to the invention, this cooling unit 1 further includes sealing devices arranged in the housing 7 in order to improve the performance of these heat exchangers 3, 4 ·
    We will now describe in more detail these sealing devices and their arrangement with reference to Figures 2 to 5 which are respectively a top view of the cooling unit according to the present invention, a schematic representation, side view, of this cooling unit and two partial schematic representations of the cooling unit seen from above.
    According to an example illustrated in these Figures 2 and 3, a first sealing device 16 is thus disposed between the first heat exchanger 3 and the second heat exchanger 4, this first sealing device 16 being disposed laterally, between the second face 31 of the first heat exchanger 3 and the first face 4θ of the second heat exchanger 4 ·
    According to this example, the first sealing device 16 is more particularly arranged between the manifolds 15 of the heat exchangers 3, 4, these manifolds 15 being situated at the lateral ends of the heat exchangers 3, 4, outside their zones heat exchange 14 · According to this exemplary embodiment of the present invention, the first sealing device 16 is arranged at a first lateral end of the heat exchangers 3, 4 and an additional sealing device 160 is arranged at a second lateral end of these heat exchangers, opposite the first lateral end. More particularly, the complementary sealing device is arranged on a manifold in a symmetrical manner, with respect to a median plane of the heat exchanger extending in particular in the first longitudinal direction X, to the first sealing device 16 previously described.
    It is understood that this first sealing device 16 and this complementary sealing device 160 make it possible to prevent a portion of the air flow FA which has just passed through the first heat exchanger 3 from escaping laterally in outlet of this first heat exchanger and make a loop around the corresponding manifold to come and pass a second time in this first heat exchanger 3 · In this way, these sealing devices 16, 160 make it possible to channel the flow of FA air and thus guide it through the second heat exchanger 4 · These sealing devices 16, 160 thus make it possible to reduce air loss in particular by channeling the air flow leaving the first heat exchanger 3 and directing it to the second heat exchanger 4 ·
    In the example illustrated, the cooling unit comprises two successive heat exchangers so that a single first sealing device and its complementary sealing device if necessary are to be provided for sealing between the heat exchangers . It will be understood that if the cooling unit comprises more than two heat exchangers, a plurality of such first sealing devices could be provided, which would extend respectively between a pair of neighboring heat exchangers.
    According to the example illustrated in FIGS. 2 and 3, a second sealing device 17 and a third sealing device 18 are disposed respectively between one of the heat exchangers 3, 4 and a structural element of the housing, this structural element which can be produced by one of the front or rear peripheral walls 11, 12 of the housing or by a rib 20 coming from one of these front or rear walls 11, 12.
    Thus, the second sealing device 17 is disposed between the first heat exchanger 3 and the front peripheral wall 11 of the housing 7 of the cooling unit 1 and the third sealing device 18 is disposed between the second heat exchanger 4 and the rear peripheral wall 12 of this housing 7 ·
    More specifically, the second sealing device 17 is disposed between the first face 30 of the first heat exchanger 3 and the front peripheral wall 11 of the housing 7 and the third sealing device 18 is in turn disposed between the second face 4 'of the second heat exchanger 4 and the rear peripheral wall 12 of the housing 7 ·
    It will be understood that the second sealing device 17 has a function of guiding the air flow entering the cooling unit 1. Thus this second sealing device 17 makes it possible to channel the air flow FA and the orient it so that it goes towards the heat exchange zone 14 of the first heat exchanger 3 · Without this second sealing device 17, a portion of the air flow FA could pass between the first heat exchanger 3 and the lateral peripheral walls 13 of the housing 7 rather than through this first heat exchanger 3, it being understood that this portion of the air flow could continue to accommodate the lateral peripheral walls by avoiding each of the following heat exchangers.
    Likewise, the third sealing device 18 makes it possible to guide the flow of air FA leaving the second heat exchanger 4 towards the engine disposed downstream of the cooling unit. In addition to this function of guiding the air flow, this third sealing device 18 contributes to limiting the phenomena of recirculation of hot air, as mentioned above. Thus, the air flow having passed through the first heat exchanger 3 and the second heat exchanger 4 is directed towards the engine and cannot pass again through one of these two heat exchangers 3, 4 ·
    As can be seen in particular in FIG. 3, a distance dl, measured parallel to the first longitudinal direction X, which separates the first heat exchanger 3 from the front peripheral wall 11 of the housing 7 is here greater than a distance d2, also measured parallel to the first longitudinal direction X, which separates the second heat exchanger 4 from the rear peripheral wall 12 of this housing 7 ·
    Thus, the third sealing device 18, disposed in contact with the second heat exchanger 4 on the one hand, and more precisely in contact with one of the manifolds 15 of this second heat exchanger 4, is on the other hand disposed directly in contact with the rear peripheral wall 12 of the housing 7, the distance d2 being small enough for a sealing device to rest in contact with the two elements.
    On the other hand, the second sealing device 17 cannot be placed at the same time in contact with the first heat exchanger 3 and with the front peripheral wall 11 of the housing 7 which is too far from this first heat exchanger 3 · A rib 20 is therefore arranged projecting from this front peripheral wall 11 and it is on this rib 20 that the second sealing device 17 comes to rest to ensure sealing. It is therefore understood that this second sealing device 17 is arranged in contact on the one hand with the first heat exchanger 3, and more precisely in contact with one of the manifolds 15 of this first heat exchanger 3 and on the other part in contact with the front peripheral wall 11 via the rib 20 projecting from this front peripheral wall 11 of the housing 7 ·
    As has been described for the first sealing device 16 arranged between two successive heat exchangers, the second sealing device 17 and the third sealing device 18 are doubled. By "doublé" is meant the fact that two complementary sealing devices are arranged opposite this second and this third sealing device 17, 18. Each heat exchanger 3, 4 carries, according to the example illustrated in particular in Figure 2, two sealing devices arranged symmetrically, respectively on a manifold.
    Thus, the second sealing device 17 is arranged between a first manifold 15 of the first heat exchanger 3 and the front peripheral wall 11 of the housing 7 and an additional sealing device - not visible in FIG. 2 - is arranged between a second manifold of the first heat exchanger 3 and the front peripheral wall 11 of this housing 7 ·
    Similarly, the third sealing device 18 is arranged between a first manifold 15 of the second heat exchanger 4 and the rear peripheral wall 12 of the housing 7 and a complementary sealing device 180 is arranged between a second manifold of the second heat exchanger 4 and the rear peripheral wall 12 of this housing 7 ·
    FIG. 3 is a schematic representation, seen from the side, of the cooling unit 1 according to the present invention in which at least one of the lateral peripheral walls 13 formed by the lateral extension of the front peripheral wall 11 has been eliminated. As illustrated in this figure, we note that the heat exchangers 3, 4 stacked in the housing 7 of this cooling unit 1 extend parallel to each other, in a second vertical direction Z. More precisely, this figure 3 shows here the manifolds 15 arranged at the lateral ends of the heat exchangers 3, 4 · it should be noted that the term "vertical" has here been chosen relative to the orientation of the heat exchangers 3, 4 of the cooling unit 1 in Figure 3 and in an example of application on a given motor vehicle, but that this designation is not limitative of the orientation that can take e these heat exchangers 3, 4 ·
    As can be seen in this FIG. 3, the sealing devices 16, 17, 18 all extend in directions parallel to the second vertical direction Z described above. According to an exemplary embodiment of the present invention illustrated in FIG. 3, these sealing devices 16, 17, 18 extend over a whole dimension of at least one of the exchangers on which they are fixed. Thus, the first sealing device 16 and the second sealing device 17 both extend over a whole dimension of the first heat exchanger 3, along the second vertical direction Z and the third sealing device 18 s 'extends in turn over a whole dimension of the second heat exchanger 4, along this second vertical direction Z.
    As mentioned above, the grille 2s, 2i carrying the device 2 for regulating the air intake has an upper part 2s and a lower part 2i having a stall 2d once fixed between them. This grille 2s, 2i can form a face of the housing 7, this stall 2d can in particular allow the stacking of an additional heat exchanger in this housing 7, such as for example shown diagrammatically in FIG. 3 · This stall 2d can also allow to adapt the shape of the housing 7 to that of the engine compartment in which it is intended to be integrated.
    According to the invention, additional sealing devices can be added, for example between the first heat exchanger 3 and this additional heat exchanger 21 or between this additional heat exchanger 21 and the front peripheral wall 11 of the housing 7 ·
    Figures 4 and 5 are partial schematic representations, seen from above, of the cooling unit according to the invention. These Figures 4 and 5 illustrate two types of sealing devices according to the invention.
    According to a first exemplary embodiment of the present invention illustrated in FIG. 4, the sealing devices 16, 17, 18 are directly overmolded on the manifolds 15 of the heat exchangers 3, 4 · According to this first exemplary embodiment, each sealing device 16, 17, 18 thus has a free end 161, 171, 181 intended to be disposed in contact with the other heat exchanger 3, 4 - that is to say the one from which it did not come the sealing device in question - or on the structural elements of the housing 7, whether the front or rear peripheral walls 11, 12 of this housing 7 or a rib 20 from one of these peripheral walls 11, 12. As can be seen in FIG. 4, the rib 20 may have, at its free end closest to the first heat exchanger, a return edge to provide a greater bearing surface at the endfree 171 of the corresponding sealing device, here the second sealing device 17 ·
    A sealing device 16, 17, 18 is an element made of a flexible material, elastically deformable, for example of elastomer. In the assembled cooling unit, as visible in FIG. 4, each heat exchanger has a curvature under the effect of the compression between the two elements with which it is in contact. The contact surface between the free end of the sealing device and the element against which this sealing device is supported is wide and the sealing is improved. It should also be noted that the curvature is here produced so that the free end is turned towards the outside of the housing of the cooling unit, that is to say opposite to the passage zone. central air flow, to avoid obstructing this air passage along the first longitudinal direction X.
    it should be noted that each sealing device has, in its original form, a dimension which is greater, for the first sealing device 16, than the spacing formed between the heat exchangers 3, 4, and, for the second and third sealing device 17, 18, between a heat exchanger 3, 4 and the structural element of the corresponding housing 7.
    Thus, during assembly of the cooling unit, the sealing device is compressed by the heat exchanger, the peripheral wall or the rib opposite which its free end is positioned. Its large size at the outset ensures that contact is made, and a slight curvature can be provided at the origin so that the direction of deformation of the sealing device is that expected.
    In order to allow the molding of the sealing devices, the manifolds 15 of the heat exchangers 3, 4 have a slot 150, visible in FIG. 4 only for the second heat exchanger 4, each slot being intended to receive a part forming base of the sealing device.
    The second embodiment of the present invention, illustrated in FIG. 5, differs from the above in that the sealing devices 16, 17, 18 are produced apart from the heat exchangers 3, 4 and are then fixed on one of these heat exchangers, for example on the manifolds 15, or on a rib 20 projecting from a peripheral wall.
    According to this second exemplary embodiment, the second heat exchanger 4 has rebates 19 formed both on the side of the first face 4θ and on the second face 4 'and which are dimensioned to allow the fixing of the first and third sealing devices 16, 18 on this heat exchanger 3, 4 · These rebates 19 can be produced either on a lateral portion of the heat exchange zone of the second heat exchanger 4, or, more advantageously, on the manifold or boxes 15 of this heat exchanger.
    Furthermore, the rib 20 is also dimensioned to receive at its free end a sealing device, here the second sealing device 17 · 11 should be noted that in the example illustrated, the first heat exchanger does not include specific means, of the rebate type 19, for receiving a sealing device, the sealing at this first heat exchanger being produced by the free end contact of sealing devices fixed elsewhere. Of course, it is understood that one could, without departing from the context of the invention, produce the rebates on the first heat exchanger rather than on the second heat exchanger. As illustrated in FIG. 5, the sealing devices 16, 17, 18 each have a base 21 fitted onto one of the rebates 19 made on the manifolds 15 of the heat exchangers 3, 4 or fitted directly on the rib 20 protruding from the front peripheral wall 11, and the free end 161, 17L 181 arranged in contact with the manifold 15 of the other heat exchanger 3, 4 or in contact with the rear peripheral wall 12 .
    It will be understood from the above that the present invention makes it possible to channel the air flow entering the cooling unit. This air flow is thus guided to pass through the heat exchangers stacked in the housing of the cooling unit. The present invention also makes it possible to avoid the recirculation phenomena of the air flow and thus improves the thermal efficiency of each heat exchanger participating in this cooling unit.
    The invention cannot however be limited to the means and configurations described and illustrated here, and it also extends to all equivalent means or configurations and to any technically operating combination of such means. In particular, the shape and arrangement of the sealing devices and the heat exchangers can be modified without harming the invention, insofar as they fulfill the functions described in this document.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Cooling unit (1) for an engine compartment of a motor vehicle comprising on the one hand a housing (7) configured to be traversed by an air flow (FA), the housing (7) being delimited by a plurality of peripheral walls (11, 12, 13), and on the other hand at least one heat exchanger (3, 4) encapsulated in this housing (7), characterized in that at least one sealing device (16 , 17, 18) is arranged laterally with respect to the at least one heat exchanger (3, 4), the at least one sealing device (16, 17, 18) being arranged in contact with this at least one heat exchanger (3, 4) and in contact with another heat exchanger (3, 4) or one of the peripheral walls.
    [2" id="c-fr-0002]
    2. Cooling unit (1) according to the preceding claim, wherein the at least one heat exchanger (3, 4) comprises a heat exchange zone (14) and at least one manifold (15) arranged at a lateral end of this heat exchange zone (14), the at least one sealing device (16, 17, 18) being arranged in contact with at least one of these manifolds (15) ·
    [3" id="c-fr-0003]
    3- cooling unit (1) according to the preceding claim, wherein the at least one sealing device (16, 17, 18) is disposed between the at least one manifold (15) of one of the exchangers heat (3, 4) and a rib (2θ) projecting from one of the peripheral walls (11, 12) of the housing (7).
    [4" id="c-fr-0004]
    4. Cooling unit (1) according to any one of claims 2 or 3, in which a first heat exchanger (3) and a second heat exchanger (4) are stacked in the housing (7) along the first longitudinal direction (X), in which at least one first sealing device (16) is disposed between the at least one manifold (15) of the first heat exchanger (3) and the at least one manifold ( 15) of the second heat exchanger (4) and in which at least a second or third sealing device (17, 18) is disposed between the at least one manifold (15) of one of the heat exchangers ( 3, 4) and one of the peripheral walls (11, 12) of the housing (2).
    [5" id="c-fr-0005]
    5- cooling unit (1) according to the preceding claim, wherein the second sealing device (17) is arranged between the at least one manifold (15) of the first heat exchanger (3) and a front peripheral wall (11) arranged transversely to the air flow (FA) entering the vehicle and in which the third sealing device (18) is disposed between the at least one manifold (15) of the second heat exchanger (4) and a rear peripheral wall (12) of the housing (2), this rear peripheral wall (12) being arranged transversely to the air flow (FA) and at a distance from the front peripheral wall (11) of this housing (2).
    [6" id="c-fr-0006]
    6. Cooling unit (1) according to any one of claims 2 to 5, in which each manifold (15) of the heat exchangers (3, 4) of the cooling unit (1) extends mainly according to a second vertical direction (Z), perpendicular to the first longitudinal direction (X), and in which at least one sealing device (16, 17, 18) extends over a whole vertical dimension of at least one of these manifolds (15), along the second vertical direction (Z).
    [7" id="c-fr-0007]
    7- Cooling unit (1) according to any one of the preceding claims, in which at least one of the sealing devices (16, 17, 18) is attached to at least one heat exchanger (3, 4) ·
    [8" id="c-fr-0008]
    8. Cooling unit (1) according to any one of the preceding claims, in which at least one sealing device (16, 17, 18) is produced by a molded lip on one of the manifolds (15) d '' at least one of the heat exchangers (3, 4) concerned.
    [9" id="c-fr-0009]
    9- Cooling unit (1) according to the preceding claim, wherein the manifold has a slot (150) in which is arranged a base of the at least one sealing device (16, 17, 18) molded.
    [10" id="c-fr-0010]
    10. Motor vehicle comprising at least one cooling unit (1) according to any one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    FR3070321B1|2020-07-17|
    EP3648999A1|2020-05-13|
    WO2019043316A1|2019-03-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0950555A1|1998-01-31|1999-10-20|Ford Global Technologies, Inc., A subsidiary of Ford Motor Company|Sealing lip between motor vehicle radiator and air duct profile|
    US6457543B1|1999-11-08|2002-10-01|International Truck Intellectual Property Company, L.L.C.|Air recirculation seal|
    WO2003053768A1|2001-12-20|2003-07-03|Valeo Thermique Moteur|Motor vehicle front end comprising a fluid tank|
    WO2003074849A1|2002-03-04|2003-09-12|Modulare Planungs- Und Konstruktionstechnik Gmbh|Air-cooled frontal radiator module|
    WO2015137871A1|2014-03-12|2015-09-17|Scania Cv Ab|Arrangement for fastening of a radiator in an air duct|FR3097470A1|2019-06-18|2020-12-25|Valeo Systemes Thermiques|Motor vehicle heat exchange module|
    FR3105982A1|2020-01-07|2021-07-09|Renault S.A.S.|Motor vehicle cooling device|
    FR3107557A1|2020-02-26|2021-08-27|Valeo Systemes Thermiques|Device for regulating the air flow of a motor vehicle|
    法律状态:
    2019-03-01| PLSC| Search report ready|Effective date: 20190301 |
    2019-08-30| PLFP| Fee payment|Year of fee payment: 3 |
    2020-08-31| PLFP| Fee payment|Year of fee payment: 4 |
    2021-08-31| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1757949A|FR3070321B1|2017-08-29|2017-08-29|COOLING UNIT FOR A COMPARTMENT OF A MOTOR VEHICLE|
    FR1757949|2017-08-29|FR1757949A| FR3070321B1|2017-08-29|2017-08-29|COOLING UNIT FOR A COMPARTMENT OF A MOTOR VEHICLE|
    PCT/FR2018/052047| WO2019043316A1|2017-08-29|2018-08-09|Cooling unit for a compartment of a motor vehicle|
    EP18766315.8A| EP3648999A1|2017-08-29|2018-08-09|Cooling unit for a compartment of a motor vehicle|
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