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EP2483098A1 - Heat exchange block for a motor vehicle - Google Patents

Heat exchange block for a motor vehicle

Info

Publication number
EP2483098A1
EP2483098A1 EP10757432A EP10757432A EP2483098A1 EP 2483098 A1 EP2483098 A1 EP 2483098A1 EP 10757432 A EP10757432 A EP 10757432A EP 10757432 A EP10757432 A EP 10757432A EP 2483098 A1 EP2483098 A1 EP 2483098A1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
exchange block
air
exchangers
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10757432A
Other languages
German (de)
French (fr)
Inventor
Frédéric Vacca
Ngy Srun Ap
Jacques Sigonneau
Manuel Henner
Bruno Demory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2483098A1 publication Critical patent/EP2483098A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • the invention relates to a heat exchange unit for a motor vehicle, which is intended to be mounted behind the front face of this vehicle, so as to be traversed by air from a corresponding opening provided at the level of the front grille.
  • the exchanger which is mounted on the front face of a motor vehicle is generally part of a heat block operated to cool the powertrain of the vehicle.
  • This heat block comprises a heat exchanger or heat exchanger carried by a frame, and movable flaps between an open position and a closed position.
  • This thermal block can also integrate another heat exchanger, part of an air conditioning circuit to cool the air of the passenger compartment.
  • the flaps that equip the exchanger ensuring the cooling of the powertrain make it possible to adjust the air flow through the exchanger (in this case a radiator) and from the opening of the calender, depending on the operating conditions.
  • the flaps When the engine is cold, the flaps are closed, so as to obtain zero cooling so that the temperature rise of the powertrain is as fast as possible. When, on the other hand, the hot power train is heavily stressed, the flaps are open so as to maximize the flow of air, and thus increase the cooling efficiency.
  • the object of the invention is to propose a solution for reducing as much as possible the cooling undergone by the coolant circulating in the heat exchanger when the shutters are closed.
  • the subject of the invention is a heat exchange block for a motor vehicle including at least one heat exchanger, this block being intended to be placed behind a front shell of a vehicle and intended to be traversed by air coming from an opening of this calender, this block comprising a set of flaps movable between an open position and a closed position to modulate the air flow through the heat exchanger or exchangers, and a pipe capable of interposing between the opening of the shell and the heat exchange block.
  • the invention also relates to a heat exchange block as defined above, in which the pipe is able to be interposed between the opening of the shell and the heat exchanger or heat exchangers.
  • the invention also relates to a heat exchange block as defined above, wherein the exchanger is surrounded by a common carrier frame constituting an extension of the pipe.
  • the invention also relates to a heat exchange block as defined above, comprising a plurality of heat exchangers arranged one behind the other to be crossed successively by the air coming from the opening of the calender.
  • the invention also relates to a heat exchange block as defined above, wherein the pipe is provided with sealing means to the sealed calender to ensure that in the closed position of the flaps, the air flow through the opening and the heat exchanger or heat exchangers is substantially zero.
  • the invention also relates to a heat exchange block as defined above, further comprising a fan for increasing the air flow through the exchanger or exchangers when the speed of the vehicle is insufficient.
  • the invention also relates to a heat exchange block comprising a plurality of heat exchangers and being intended to be inserted behind a front grille of a vehicle and to be traversed by air from an opening of this radiator , said heat exchangers being arranged one behind the other to be traversed successively by the air from the opening of the calender.
  • this block further comprises a set of flaps movable between an open position and a closed position to modulate the air flow through the heat exchanger, and a pipe capable of interposing between the opening of the shell and said heat exchange block, said block also comprising a fan to increase the air flow through the exchangers when the speed of the vehicle is insufficient.
  • the invention also relates to a heat exchange block as defined above wherein said fan is disposed between said set of movable flaps and said heat exchangers.
  • the invention also relates to a heat exchange block as defined above, wherein the pipe is sized to constitute a pedestrian impact absorber.
  • the invention also relates to a heat exchange block as defined above further comprising minus an aerodynamic conveyor disposed between the set of movable flaps and a heat exchanger.
  • Figure 1 is a schematic side view of a first embodiment of the invention, the shutters are shown open;
  • FIG. 2 is a schematic representation in side view of the first embodiment of the invention, the shutters are shown closed;
  • Figure 3 is a schematic side view of a second embodiment of the invention, the shutters are shown open;
  • Figure 4 is a schematic side view of the second embodiment of the invention, the shutters are shown closed;
  • Figure 5 is a schematic representation in side view of a third embodiment of the invention whose shutters are shown closed.
  • Figure 6 is a schematic representation in side view of a fourth embodiment of the invention, the flaps are shown open.
  • the invention is based on the observation that in known systems, when the flaps of a heat exchanger located on the front face are closed, the cooling air entering through the opening of the calender bypasses the exchanger, and produces behind it turbulence which cause unwanted cooling of the heat transfer fluid flowing through or in this exchanger.
  • the heat exchange block 1 comprises three heat exchangers marked by 2, 3 and 4, which are arranged one behind the other according to the direction of vehicle advancement.
  • This heat exchange block 1 is intended to be mounted behind a front grille of a motor vehicle, which is represented in the figures by being indicated by 6, being situated opposite an opening of this shell, this opening being equipped with a grid 7.
  • air A passes through the gate 7 to reach the different exchangers 2, 3 and 4 in order to cross them successively because they are placed one behind the other.
  • the condenser 2 is part of an air conditioning circuit operated to cool the cabin, cooling it, depending on the circumstances.
  • the heat exchange block is equipped with a set of shutters 13 movable between an open state corresponding to that of FIG. 1, in which they let the entire air flow pass. A through the different exchangers, and a closed state, corresponding to Figure 2, and wherein they prohibit the passage of air through the different exchangers 2, 3, 4 of the block 1.
  • flaps 13 are for example mounted in the frame 8 or at the latter, between the first and the second exchanger 2 and 3, and they extend, here, over the entire internal cross section of this frame so to be able completely to obstruct the internal passage that defines this frame 8, when these shutters 13 are closed. They are moved by a motorized member 14 between their open position and their closed position, this motorized member 14 being itself controlled by a control unit not shown.
  • the heat exchange block 1 is also equipped with a pipe 9 which interposes between the opening of the shell and, in this example, its air intake grille 7 and the frame 8 enveloping the heat exchangers that it prolongs.
  • This duct 9 extends in the general direction of travel of the vehicle, and has a closed contour when viewed in section in a plane normal to this direction of travel.
  • the front end of the pipe is advantageously provided with means enabling it to be sealed to the shell around the shell. the opening.
  • the exchange block 1 and 2 is equipped on its rear face with a fan 11 and a nozzle 12.
  • This fan is thus located opposite the third heat exchanger 4, and is surrounded by the nozzle 12 which extends the enveloping frame 8, and thanks to which almost all the air that the fan is beating is air that has actually passed through the exchangers 2, 3, 4.
  • the invention is applicable to different thermal block architectures: in the case of FIGS. 1 and 2, the heat block comprises three heat exchangers 2, 3 and 4, but it can also include only one heat exchanger 3. and / or exchanger 4.
  • the heat exchange block which is marked by 1 ' has the same components as the heat block 1 of FIGS. 1 and 2, with the difference that it has two exchangers instead of three, and that the arrangement of the elements carried by its chassis is different.
  • the heat exchange block is mounted behind a front calender 6 'and vis-à-vis a grid 7' of this calender , it comprises a frame 8 'supporting and surrounding several elements, and a pipe or pipe 9' located between the shell and the frame 8 'it extends.
  • the chassis 8 ' carries an exchanger 3' which is here an evaporator-condenser, and an exchanger 4 'which is a cooling radiator of the powertrain of the vehicle.
  • the exchangers 3 'and 4' are also located one behind the other along the direction of travel of the vehicle, so that the air admitted into the pipe 9 'passes successively through the exchangers 3' and 4 ' .
  • the thermal block is also equipped with flaps 13 'controlled by an actuator 14', these flaps 13 'being mounted in the internal section of the frame 8', but being located in front of the fan 11 ', that is to say between the fan 11' and the pipe 9 '.
  • the shutters 13 ' are also movable between an open position as in FIG. 3 to let all the air A' pass through the exchangers, and a closed position, as in FIG. , in which they forbid air A 'to pass through the exchangers.
  • the pipe 9 ' ensures that when the shutters are closed, the air A' can not bypass the exchangers to cool the coolant circulating in the latter. In other words, thanks to the presence of the pipe 9 ', the shutters can completely block the air passing through the calender.
  • This thermal block is also equipped with a fan 11 'and a nozzle 12' which are here mounted in the frame 8 ', at the front of the exchanger 3', that is to say 1 exchanger 3 'and the pipe 9', instead of being mounted to the rear face of the cooling radiator of the powertrain.
  • the fan 11 ' is disposed between the movable flap assembly and the heat exchangers.
  • the fan 11 ' is integrated in the heat block the between the set of moving flaps and the heat exchangers.
  • the nozzle 12 ' also has the function of ensuring that all the air stirred by the fan passes through the exchangers, so as to optimize the efficiency of the fan.
  • the fan 11 'and its associated nozzle 12' provide sufficient air flow through the exchangers 3 'and 4' when the speed of the vehicle is insufficient.
  • the heat exchange block which is marked by 1 " has the same components as the heat block 1 of FIGS. 1 and 2, with the difference that it comprises two exchangers instead of three which here have dimensions different from each other, and that the pipe 9 '' has a general shape which differs from those of Figures 1 to 4.
  • the heat exchange block 1 ' is mounted behind a not shown front grille and vis-à-vis a grid not shown equipping this grille, it comprises a frame 8 '' supporting and surrounding several elements, and a pipe 9 '' located between the grid not shown and the frame 8 '' it extends.
  • the 8 '' chassis carries two exchangers 3 '' and 4 '',
  • the thermal block the ' is equipped with flaps 13' 'controlled by an actuator 14', these flaps 13 'being again mounted in the internal section of the frame 8' '.
  • the flaps 13 '' are also movable between an open position let all the air A '', and a closed position to prevent air A '' to pass through the exchangers.
  • the pipe 9 '' here has an evolutionary shape comprising a rear section extending the frame 8 '' and extending forwardly in two branches or pipes 9 '' a and 9 '' b distinct.
  • the upper branch 9a '' thus collects air from an upper grid of the shell while the lower arm 9b '' collects air from a lower grid of this shell.
  • This pipe 9 '' thus has in its rear part a cross section forming a closed contour and in its front part a cross section delimiting two closed contours.
  • the block '' may also be equipped with a fan to force the air circulation when circumstances dictate, this fan can then be mounted as in the first embodiment or as in the second embodiment .
  • this fan can then be mounted as in the first embodiment or as in the second embodiment .
  • it can advantageously be sized to constitute a pedestrian shock absorber .
  • its mechanical stiffness in the longitudinal direction can be chosen to participate in the absorption of the impact of a pedestrian striking the front calender of the vehicle.
  • FIG 6 shows a fourth embodiment of the invention.
  • the heat exchange block which is marked by 1 '' 'has the same components as the heat block 1 of Figures 1 and 2, with the difference that it comprises three exchangers two of which are placed one above the other.
  • the heat exchange block 1'' is mounted behind a not shown front calender and vis-à-vis a not shown grid equipping the calender.
  • the thermal block '' ' also comprises a pipe 9' '' located between the grid and the frame (not shown) that it extends.
  • the frame supports and surrounds several elements, including exchangers 3 '' 'and 4' '' and 5 '' ', 1' 'exchanger 3' 'being located behind the exchangers 4' '' and 5 ''' 'in the direction of air circulation A '' '.
  • the exchangers 4 ''' 'and 5' '' are located one above the other.
  • the thermal block '' has moreover flaps
  • the flaps 13 '''' being also mounted in the internal section of the chassis 8'''.
  • the flaps 13 ''' are also movable between an open position let all the air A' 1 ', and a closed position to prevent air A''' to pass through the exchangers.
  • the block 1 ' is equipped with a fan 11''' cooperating with a nozzle 12 '''to force air circulation when circumstances dictate, this fan being here mounted in front of the thermal block ''.
  • aerodynamic deflectors or conveyors 20 are provided.
  • the conveyors 20 are incorporated in the thermal block 1 '.
  • the aerodynamic conveyors are arranged between the heat exchangers and the movable flaps 13 '' '.
  • These aerodynamic conveyors 20 are intended to guide the flow of air entering, to the areas of the heat exchangers masked by a bumper beam 22.
  • the bumper beam 22 of the motor vehicle is also equipped with a deflector 24 made here in the form of a cover.
  • the cover is placed at the rear of the beam 22 in the direction of air circulation A '' '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention relates to a heat exchange block (1) for a motor vehicle, including at least one heat exchanger (2, 3, 4), wherein said block (1) is intended to be disposed behind a front grille (6) of a vehicle and to be traversed by air originating from an opening in the grille. The block comprises a group of louvres (13) that can move between an open position and a closed position in order to modulate the flow of air (A) passing through the heat exchanger (2, 3, 4) and a channel (9) that can be disposed between the opening in the grille and the heat exchange block (1). The invention is suitable for any motor vehicle, but, in particular, hybrid and electric vehicles.

Description

Bloc d'échange thermique pour véhicule automobile  Heat exchange block for a motor vehicle
L'invention concerne un bloc d'échange thermique pour véhicule automobile, qui est destiné à être monté en arrière de la face avant de ce véhicule, de manière à être traversé par de l'air provenant d'une ouverture correspondante prévue au niveau de la calandre avant. The invention relates to a heat exchange unit for a motor vehicle, which is intended to be mounted behind the front face of this vehicle, so as to be traversed by air from a corresponding opening provided at the level of the front grille.
ARRIERE PLAN DE L'INVENTION BACKGROUND OF THE INVENTION
L ' échangeur qui est monté en face avant d'un véhicule automobile fait généralement partie d'un bloc thermique exploité pour refroidir le groupe moto propulseur du véhicule. Ce bloc thermique comporte un échangeur thermique ou échangeur de chaleur porté par un châssis, et des volets mobiles entre une position ouverte et une position fermée. The exchanger which is mounted on the front face of a motor vehicle is generally part of a heat block operated to cool the powertrain of the vehicle. This heat block comprises a heat exchanger or heat exchanger carried by a frame, and movable flaps between an open position and a closed position.
Ce bloc thermique peut aussi intégrer un autre échangeur thermique, faisant partie d'un circuit de climatisation pour refroidir l'air de l'habitacle.  This thermal block can also integrate another heat exchanger, part of an air conditioning circuit to cool the air of the passenger compartment.
Les volets qui équipent 1 ' échangeur assurant le refroidissement du groupe motopropulseur permettent d'ajuster le débit d'air traversant 1 ' échangeur (dans ce cas un radiateur) et provenant de l'ouverture de la calandre, en fonction des conditions de fonctionnement.  The flaps that equip the exchanger ensuring the cooling of the powertrain make it possible to adjust the air flow through the exchanger (in this case a radiator) and from the opening of the calender, depending on the operating conditions.
Lorsque le moteur est froid, les volets sont fermés, de manière à obtenir un refroidissement nul pour que la montée en température du groupe moto-propulseur soit la plus rapide possible. Lorsqu'au contraire, le groupe motopropulseur chaud est fortement sollicité, les volets sont ouverts de manière à maximiser le flux d'air, et augmenter ainsi l'efficacité du refroidissement .  When the engine is cold, the flaps are closed, so as to obtain zero cooling so that the temperature rise of the powertrain is as fast as possible. When, on the other hand, the hot power train is heavily stressed, the flaps are open so as to maximize the flow of air, and thus increase the cooling efficiency.
D'une manière générale, on constate que lorsque les volets sont en position fermée, le liquide caloporteur circulant dans 1 ' échangeur de chaleur est refroidi malgré tout, ce qui ralentit notamment le temps de montée en température du groupe moto-propulseur. OBJET DE L'INVENTION In general, it can be seen that when the flaps are in the closed position, the coolant circulating in the heat exchanger is cooled in spite of everything, which slows in particular the temperature rise time of the powertrain unit. OBJECT OF THE INVENTION
Le but de l'invention est de proposer une solution pour réduire le plus possible le refroidissement subi par le liquide caloporteur circulant dans 1 ' échangeur thermique lorsque les volets sont fermés. The object of the invention is to propose a solution for reducing as much as possible the cooling undergone by the coolant circulating in the heat exchanger when the shutters are closed.
RESUME DE L'INVENTION A cet effet, l'invention a pour objet un bloc d'échange thermique pour véhicule automobile incluant au moins un échangeur thermique, ce bloc étant destiné à être interposé en arrière d'une calandre avant d'un véhicule et destiné à être traversé par de l'air issu d'une ouverture de cette calandre, ce bloc comprenant un ensemble de volets mobiles entre une position ouverte et une position fermée pour moduler le débit d'air traversant le ou les échangeurs thermiques, et une conduite apte à s'interposer entre l'ouverture de la calandre et le bloc d'échange thermique. SUMMARY OF THE INVENTION To this end, the subject of the invention is a heat exchange block for a motor vehicle including at least one heat exchanger, this block being intended to be placed behind a front shell of a vehicle and intended to be traversed by air coming from an opening of this calender, this block comprising a set of flaps movable between an open position and a closed position to modulate the air flow through the heat exchanger or exchangers, and a pipe capable of interposing between the opening of the shell and the heat exchange block.
Avec cette solution, lorsque les volets sont fermés, l'air en provenance de l'ouverture de la calandre ne peut pas contourner le ou les échangeurs thermiques pour provoquer derrière et autour du ou des échangeurs des perturbations produisant un refroidissement non souhaité du liquide caloporteur circulant dans l' échangeur.  With this solution, when the flaps are closed, the air coming from the opening of the calender can not bypass the heat exchanger or heat exchangers to cause behind and around the exchanger or exchangers disturbances producing undesired cooling of the coolant circulating in the exchanger.
L'invention concerne également un bloc d'échange thermique tel que défini ci -dessus, dans lequel la conduite est apte à s'interposer entre l'ouverture de la calandre et le ou les échangeurs thermiques.  The invention also relates to a heat exchange block as defined above, in which the pipe is able to be interposed between the opening of the shell and the heat exchanger or heat exchangers.
L'invention concerne également un bloc d'échange thermique tel que défini ci-dessus, dans lequel l' échangeur est entouré par un châssis porteur commun constituant un prolongement de la conduite.  The invention also relates to a heat exchange block as defined above, wherein the exchanger is surrounded by a common carrier frame constituting an extension of the pipe.
L'invention concerne également un bloc d'échange thermique tel que défini ci-dessus, comprenant plusieurs échangeurs thermiques disposés les uns derrière les autres pour être traversés successivement par l'air issu de l'ouverture de la calandre. The invention also relates to a heat exchange block as defined above, comprising a plurality of heat exchangers arranged one behind the other to be crossed successively by the air coming from the opening of the calender.
L'invention concerne également un bloc d'échange thermique tel que défini ci -dessus, dans lequel la conduite est pourvue de moyens de solidarisation à la calandre étanches pour assurer qu'en position fermée des volets, le débit d'air traversant l'ouverture et le ou les échangeurs thermiques soit sensiblement nul.  The invention also relates to a heat exchange block as defined above, wherein the pipe is provided with sealing means to the sealed calender to ensure that in the closed position of the flaps, the air flow through the opening and the heat exchanger or heat exchangers is substantially zero.
L'invention concerne également un bloc d'échange thermique tel que défini ci -dessus, comprenant en outre un ventilateur pour augmenter le débit d'air traversant le ou les échangeurs lorsque la vitesse du véhicule est insuffisante .  The invention also relates to a heat exchange block as defined above, further comprising a fan for increasing the air flow through the exchanger or exchangers when the speed of the vehicle is insufficient.
L'invention concerne également un bloc d'échange thermique comprenant plusieurs échangeurs thermiques et étant destiné à être interposé en arrière d'une calandre avant d'un véhicule et destiné à être traversé par de l'air issu d'une ouverture de cette calandre, lesdits échangeurs thermiques étant disposés les uns derrière les autres pour être traversés successivement par l'air issu de l'ouverture de la calandre. Dans ce mode de réalisation, ce bloc comprend en outre un ensemble de volets mobiles entre une position ouverte et une position fermée pour moduler le débit d'air traversant 1 ' échangeur thermique, et une conduite apte à s'interposer entre l'ouverture de la calandre et ledit bloc d'échange thermique, ledit bloc comprenant aussi un ventilateur pour augmenter le débit d'air traversant les échangeurs lorsque la vitesse du véhicule est insuffisante.  The invention also relates to a heat exchange block comprising a plurality of heat exchangers and being intended to be inserted behind a front grille of a vehicle and to be traversed by air from an opening of this radiator , said heat exchangers being arranged one behind the other to be traversed successively by the air from the opening of the calender. In this embodiment, this block further comprises a set of flaps movable between an open position and a closed position to modulate the air flow through the heat exchanger, and a pipe capable of interposing between the opening of the shell and said heat exchange block, said block also comprising a fan to increase the air flow through the exchangers when the speed of the vehicle is insufficient.
L'invention concerne également un bloc d'échange thermique tel que défini ci-dessus dans lequel ledit ventilateur est disposé entre ledit ensemble de volets mobile et lesdits échangeurs thermiques.  The invention also relates to a heat exchange block as defined above wherein said fan is disposed between said set of movable flaps and said heat exchangers.
L'invention concerne également un bloc d'échange thermique tel que défini ci -dessus, dans lequel la conduite est dimensionnée pour constituer un absorbeur de choc piéton.  The invention also relates to a heat exchange block as defined above, wherein the pipe is sized to constitute a pedestrian impact absorber.
L'invention concerne également un bloc d'échange thermique tel que défini ci -dessus comportant en outre au moins un convoyeur aérodynamique disposé entre l'ensemble de volets mobiles et un échangeur thermique. The invention also relates to a heat exchange block as defined above further comprising minus an aerodynamic conveyor disposed between the set of movable flaps and a heat exchanger.
BREVE DESCRIPTION DES FIGURES BRIEF DESCRIPTION OF THE FIGURES
La figure 1 est une représentation schématique en vue de coté d'un premier mode de réalisation de l'invention dont les volets sont représentés ouverts ; Figure 1 is a schematic side view of a first embodiment of the invention, the shutters are shown open;
La figure 2 est une représentation schématique en vue de coté du premier mode de réalisation de l'invention dont les volets sont représentés fermés ;  Figure 2 is a schematic representation in side view of the first embodiment of the invention, the shutters are shown closed;
La figure 3 est une représentation schématique en vue de coté d'un second mode de réalisation de l'invention dont les volets sont représentés ouverts ;  Figure 3 is a schematic side view of a second embodiment of the invention, the shutters are shown open;
La figure 4 est une représentation schématique en vue de coté du second mode de réalisation de l'invention dont les volets sont représentés fermés ;  Figure 4 is a schematic side view of the second embodiment of the invention, the shutters are shown closed;
La figure 5 est une représentation schématique en vue latérale d'un troisième mode de réalisation de l'invention dont les volets sont représentés fermés.  Figure 5 is a schematic representation in side view of a third embodiment of the invention whose shutters are shown closed.
La figure 6 est une représentation schématique en vue latérale d'un quatrième mode de réalisation de l'invention dont les volets sont représentés ouverts.  Figure 6 is a schematic representation in side view of a fourth embodiment of the invention, the flaps are shown open.
DESCRIPTION DETAILLEE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
L'invention est basée sur le constat selon lequel dans les systèmes connus, lorsque les volets d'un échangeur situé en face avant sont fermés, l'air de refroidissement qui entre par l'ouverture de la calandre contourne l' échangeur, et produit en arrière de celui-ci des turbulences qui provoquent un refroidissement non souhaité du liquide caloporteur traversant ou circulant dans cet échangeur. The invention is based on the observation that in known systems, when the flaps of a heat exchanger located on the front face are closed, the cooling air entering through the opening of the calender bypasses the exchanger, and produces behind it turbulence which cause unwanted cooling of the heat transfer fluid flowing through or in this exchanger.
Dans l'invention, on prévoit une conduite interposée entre le bloc thermique (et dans un exemple particulier 1' échangeur) et l'ouverture de la calandre de sorte que lorsque les volets sont fermés, l'air susceptible d'entrer par l'ouverture soit bloqué et ne peut pas contourner 1 ' échangeur . In the invention, provision is made for a pipe interposed between the heat block (and in a particular example the exchanger) and the opening of the shell so that when the shutters are closed, the air likely to enter through the opening is blocked and can not bypass the exchanger.
Dans un premier mode de réalisation de l'invention, qui est représenté dans les figures 1 et 2, le bloc d'échange thermique 1 comprend trois échangeurs thermiques repérés par 2, 3 et 4, qui sont disposés les uns derrière les autres selon la direction d'avancement du véhicule.  In a first embodiment of the invention, which is represented in FIGS. 1 and 2, the heat exchange block 1 comprises three heat exchangers marked by 2, 3 and 4, which are arranged one behind the other according to the direction of vehicle advancement.
Ce bloc d'échange thermique 1 est destiné à être monté derrière une calandre avant de véhicule automobile, qui est représentée dans les figure en y étant repérée par 6, en étant situé en vis-à-vis d'une ouverture de cette calandre, cette ouverture étant équipée d'une grille 7 .  This heat exchange block 1 is intended to be mounted behind a front grille of a motor vehicle, which is represented in the figures by being indicated by 6, being situated opposite an opening of this shell, this opening being equipped with a grid 7.
En fonctionnement, par exemple lorsque le véhicule avance, de l'air A traverse la grille 7 pour atteindre les différents échangeurs 2, 3 et 4 afin de les traverser successivement du fait que ceux-ci sont placés les uns derrière les autres.  In operation, for example when the vehicle is moving, air A passes through the gate 7 to reach the different exchangers 2, 3 and 4 in order to cross them successively because they are placed one behind the other.
Dans l'agencement des figures 1 et 2 et dans ce mode réalisation, partant de la grille 7 et suivant la direction d'avancement du véhicule, le flux de l'air A traverse d'abord 1 ' échangeur 2 qui est un condenseur, puis il traverse 1 ' échangeur 3 qui est un refroidisseur d'air de suralimentation, avant de traverser 1 ' échangeur 4 qui est un radiateur de refroidissement des moyens de propulsion du véhicule .  In the arrangement of Figures 1 and 2 and in this embodiment, starting from the gate 7 and in the direction of travel of the vehicle, the flow of air A first through the exchanger 2 which is a condenser, then it passes through the exchanger 3 which is a charge air cooler, before passing through the exchanger 4 which is a cooling radiator of the vehicle propulsion means.
En pratique, le condenseur 2 fait partie d'un circuit de climatisation exploité pour climatiser l'habitacle, en en le refroidissant, selon les circonstances.  In practice, the condenser 2 is part of an air conditioning circuit operated to cool the cabin, cooling it, depending on the circumstances.
Ces trois échangeurs 2, 3 et 4 qui sont montés l'un derrière l'autre le long la direction d'avancement du véhicule, sont portés par un même châssis ou support commun, repéré par 8, qui entoure ou encadre conjointement ces trois échangeurs. Ce châssis entourant 8 constitue ici une enveloppe étanche qui canalise l'air pour que la totalité du flux d'air traversant le premier échangeur 2 traverse également nécessairement les autres échangeurs 2, 3. Afin de réguler le flux d'air A, le bloc d'échange thermique est équipé d'un ensemble de volets 13 mobiles entre un état ouvert correspondant à celui de la figure 1, dans lequel ils laissent passer la totalité du flux d'air A à travers les différents échangeurs, et un état fermé, correspondant à la figure 2, et dans lequel ils interdisent le passage d'air à travers les différents échangeurs 2, 3, 4 du bloc 1. These three exchangers 2, 3 and 4 which are mounted one behind the other along the direction of travel of the vehicle, are carried by the same frame or common support, identified by 8, which surrounds or frames jointly these three exchangers . This surrounding frame 8 constitutes here a sealed envelope which channels the air so that the entire air flow passing through the first exchanger 2 also necessarily passes through the other exchangers 2, 3. In order to regulate the flow of air A, the heat exchange block is equipped with a set of shutters 13 movable between an open state corresponding to that of FIG. 1, in which they let the entire air flow pass. A through the different exchangers, and a closed state, corresponding to Figure 2, and wherein they prohibit the passage of air through the different exchangers 2, 3, 4 of the block 1.
Ces volets 13 sont par exemple montés dans le châssis 8 ou au niveau de ce dernier, entre le premier et le second échangeur 2 et 3 , et ils s'étendent, ici, sur la totalité de la section transversale interne de ce châssis de manière à pouvoir complètement obstruer le passage interne que définit ce châssis 8, lorsque ces volets 13 sont fermés. Ils sont déplacés par un organe motorisé 14, entre leur position ouverte et leur position fermée, cet organe motorisé 14 étant lui-même piloté par une unité de commande non représentée.  These flaps 13 are for example mounted in the frame 8 or at the latter, between the first and the second exchanger 2 and 3, and they extend, here, over the entire internal cross section of this frame so to be able completely to obstruct the internal passage that defines this frame 8, when these shutters 13 are closed. They are moved by a motorized member 14 between their open position and their closed position, this motorized member 14 being itself controlled by a control unit not shown.
Le bloc d'échange thermique 1 est en outre équipé d'une canalisation 9 qui s'interpose entre l'ouverture de la calandre et, dans cet exemple, sa grille d'admission d'air 7 et le châssis 8 enveloppant les échangeurs thermiques qu'elle prolonge. Cette canalisation 9 s'étend selon la direction générale d'avancement du véhicule, et présente un contour fermé lorsqu'elle est vue en section dans un plan normal à cette direction d'avancement.  The heat exchange block 1 is also equipped with a pipe 9 which interposes between the opening of the shell and, in this example, its air intake grille 7 and the frame 8 enveloping the heat exchangers that it prolongs. This duct 9 extends in the general direction of travel of the vehicle, and has a closed contour when viewed in section in a plane normal to this direction of travel.
Grâce à cette conduite 9, lorsque les volets sont fermés, l'air ne peut pas contourner les échangeurs, de sorte que la fermeture des volets est suffisante pour annuler à peu près totalement le refroidissement du liquide caloporteur circulant dans les échangeurs.  With this pipe 9, when the shutters are closed, the air can not bypass the heat exchangers, so that the closure of the flaps is sufficient to cancel almost completely the cooling of the coolant circulating in the exchangers.
Afin d'assurer que le débit d'air traversant l'ouverture de la calandre soit sensiblement nul lorsque les volets sont fermés, l'extrémité avant de la conduite est avantageusement pourvue de moyens permettant de la solidariser de manière étanche à la calandre autour de l'ouverture.  In order to ensure that the flow rate of air passing through the opening of the shell is substantially zero when the flaps are closed, the front end of the pipe is advantageously provided with means enabling it to be sealed to the shell around the shell. the opening.
Pour établir un débit d'air A suffisant lorsque le véhicule a une vitesse trop faible, le bloc d'échange thermique 1 des figures 1 et 2 est équipé à sa face arrière d'un ventilateur 11 et d'une buse 12. Ce ventilateur est ainsi situé en vis-à-vis du troisième échangeur de chaleur 4, et il est entouré par la buse 12 qui prolonge le châssis enveloppant 8, et grâce à laquelle la quasi totalité de l'air que brasse le ventilateur est de l'air ayant effectivement traversé les échangeurs 2, 3, 4. To establish a sufficient air flow A when the vehicle has a speed too low, the exchange block 1 and 2 is equipped on its rear face with a fan 11 and a nozzle 12. This fan is thus located opposite the third heat exchanger 4, and is surrounded by the nozzle 12 which extends the enveloping frame 8, and thanks to which almost all the air that the fan is beating is air that has actually passed through the exchangers 2, 3, 4.
D'une manière générale, l'invention est applicable à différentes architectures de blocs thermiques : dans le cas des figures 1 et 2, le bloc thermique comporte trois échangeurs 2, 3 et 4, mais il peut aussi bien comporter uniquement 1 ' échangeur 3 et/ou 1 ' échangeur 4.  In general, the invention is applicable to different thermal block architectures: in the case of FIGS. 1 and 2, the heat block comprises three heat exchangers 2, 3 and 4, but it can also include only one heat exchanger 3. and / or exchanger 4.
Dans un autre mode de réalisation qui est représenté sur les figures 3 et 4, le bloc d'échange thermique qui est repéré par 1 ' comporte les mêmes composants que le bloc thermique 1 des figures 1 et 2 , à la différence près qu'il comporte deux échangeurs au lieu de trois, et que l'agencement des éléments portés par son châssis est différent .  In another embodiment which is represented in FIGS. 3 and 4, the heat exchange block which is marked by 1 'has the same components as the heat block 1 of FIGS. 1 and 2, with the difference that it has two exchangers instead of three, and that the arrangement of the elements carried by its chassis is different.
Ainsi, d'une manière générale, dans ce second mode de réalisation, le bloc d'échange thermique l' est monté en arrière d'une calandre avant 6' et en vis-à-vis d'une grille 7 ' de cette calandre, il comprend un châssis 8' supportant et entourant plusieurs éléments, ainsi qu'une canalisation ou conduite 9' située entre la calandre et le châssis 8' qu'elle prolonge .  Thus, in a general manner, in this second embodiment, the heat exchange block is mounted behind a front calender 6 'and vis-à-vis a grid 7' of this calender , it comprises a frame 8 'supporting and surrounding several elements, and a pipe or pipe 9' located between the shell and the frame 8 'it extends.
Dans cet autre mode de réalisation, le châssis 8 ' porte un échangeur 3 ' qui est ici un évaporateur- condenseur , et un échangeur 4 ' qui est un radiateur de refroidissement du groupe moto propulseur du véhicule. Les échangeurs 3' et 4 ' sont là aussi situés l'un derrière l'autre le long de la direction d'avancement du véhicule, de sorte que l'air admis dans la canalisation 9' traverse successivement les échangeurs 3 ' et 4 ' .  In this other embodiment, the chassis 8 'carries an exchanger 3' which is here an evaporator-condenser, and an exchanger 4 'which is a cooling radiator of the powertrain of the vehicle. The exchangers 3 'and 4' are also located one behind the other along the direction of travel of the vehicle, so that the air admitted into the pipe 9 'passes successively through the exchangers 3' and 4 ' .
Le bloc thermique l' est aussi équipé de volets 13' pilotés par un actionneur 14 ' , ces volets 13 ' étant montés dans la section interne du châssis 8', mais en étant situés en avant du ventilateur 11', c'est-à-dire entre ce ventilateur 11' et la conduite 9' . The thermal block is also equipped with flaps 13 'controlled by an actuator 14', these flaps 13 'being mounted in the internal section of the frame 8', but being located in front of the fan 11 ', that is to say between the fan 11' and the pipe 9 '.
Comme visible dans les figures 3 et 4 , les volets 13' sont là aussi mobiles entre une position ouverte comme dans la figure 3 pour laisser passer tout l'air A ' à travers les échangeurs, et une position fermée, comme dans la figure 4, dans laquelle ils interdisent à l'air A ' de passer à travers les échangeurs.  As can be seen in FIGS. 3 and 4, the shutters 13 'are also movable between an open position as in FIG. 3 to let all the air A' pass through the exchangers, and a closed position, as in FIG. , in which they forbid air A 'to pass through the exchangers.
Comme dans le cas du premier mode de réalisation de l'invention, la canalisation 9' assure que lorsque les volets sont fermés, l'air A' ne peut pas contourner les échangeurs pour refroidir le liquide caloporteur circulant dans ces derniers. Autrement dit, grâce à la présence de la conduite 9', les volets permettent de bloquer complètement l'air traversant de la calandre.  As in the case of the first embodiment of the invention, the pipe 9 'ensures that when the shutters are closed, the air A' can not bypass the exchangers to cool the coolant circulating in the latter. In other words, thanks to the presence of the pipe 9 ', the shutters can completely block the air passing through the calender.
Ce bloc thermique l' est aussi équipé d'un ventilateur 11' et d'une buse 12' qui sont ici montés dans le châssis 8', à la face avant de 1 ' échangeur 3', c'est-à-dire 1 ' échangeur 3' et la conduite 9', au lieu d'être montés à la face arrière du radiateur de refroidissement du groupe motopropulseur . Autrement dit, dans ce mode de réalisation, le ventilateur 11' est disposé entre l'ensemble de volets mobile et les échangeurs thermiques. Encore autrement dit, le ventilateur 11' est intégré dans le bloc thermique l' entre l'ensemble des volets mobiles et les échangeurs thermiques.  This thermal block is also equipped with a fan 11 'and a nozzle 12' which are here mounted in the frame 8 ', at the front of the exchanger 3', that is to say 1 exchanger 3 'and the pipe 9', instead of being mounted to the rear face of the cooling radiator of the powertrain. In other words, in this embodiment, the fan 11 'is disposed between the movable flap assembly and the heat exchangers. In other words, the fan 11 'is integrated in the heat block the between the set of moving flaps and the heat exchangers.
La buse 12' a là aussi pour fonction d'assurer que la totalité de l'air brassé par le ventilateur traverse les échangeurs, de manière à optimiser le rendement de ce ventilateur .  The nozzle 12 'also has the function of ensuring that all the air stirred by the fan passes through the exchangers, so as to optimize the efficiency of the fan.
Le ventilateur 11' et sa buse associée 12' assurent un débit d'air suffisant à travers les échangeurs 3' et 4' lorsque la vitesse du véhicule est insuffisante.  The fan 11 'and its associated nozzle 12' provide sufficient air flow through the exchangers 3 'and 4' when the speed of the vehicle is insufficient.
Dans un troisième mode de réalisation qui est représenté en figure 5, le bloc d'échange thermique qui est repéré par 1' ' comporte les mêmes composants que le bloc thermique 1 des figures 1 et 2, à la différence près qu'il comporte deux échangeurs au lieu de trois qui ont ici des dimensions différentes l'un de l'autre, et que la conduite 9'' a une forme générale qui diffère de celles des figures 1 à 4. In a third embodiment which is represented in FIG. 5, the heat exchange block which is marked by 1 "has the same components as the heat block 1 of FIGS. 1 and 2, with the difference that it comprises two exchangers instead of three which here have dimensions different from each other, and that the pipe 9 '' has a general shape which differs from those of Figures 1 to 4.
Ainsi, d'une manière générale, dans ce troisième mode de réalisation, le bloc d'échange thermique l' ' est monté en arrière d'une calandre avant non représentée et en vis-à-vis d'une grille non représentée équipant cette calandre, il comprend un châssis 8 ' ' supportant et entourant plusieurs éléments, ainsi qu'une conduite 9'' située entre la grille non représentée et le châssis 8'' qu'elle prolonge.  Thus, in a general manner, in this third embodiment, the heat exchange block 1 'is mounted behind a not shown front grille and vis-à-vis a grid not shown equipping this grille, it comprises a frame 8 '' supporting and surrounding several elements, and a pipe 9 '' located between the grid not shown and the frame 8 '' it extends.
Le châssis 8 ' ' porte deux échangeurs 3 ' ' et 4 ' ' , The 8 '' chassis carries two exchangers 3 '' and 4 '',
1 ' échangeur 3' ' étant significativement plus petit que 1 ' échangeur 4'', qui sont là aussi situés l'un derrière l'autre le long de la direction d'avancement du véhicule, pour que l'air admis dans la canalisation 9' ' les traverse successivement. 1 'exchanger 3' 'being significantly smaller than the exchanger 4' ', which are also located one behind the other along the direction of travel of the vehicle, so that the air admitted into the pipe 9 '' crosses them successively.
Le bloc thermique l' ' est équipé de volets 13' ' pilotés par un actionneur 14 ' , ces volets 13 ' étant là aussi montés dans la section interne du châssis 8 ' ' . Les volets 13 ' ' sont là aussi mobiles entre une position ouverte laisser passer tout l'air A' ', et une position fermée pour interdire à l'air A' ' de passer à travers les échangeurs.  The thermal block the 'is equipped with flaps 13' 'controlled by an actuator 14', these flaps 13 'being again mounted in the internal section of the frame 8' '. The flaps 13 '' are also movable between an open position let all the air A '', and a closed position to prevent air A '' to pass through the exchangers.
La conduite 9' ' a ici une forme évolutive comprenant un tronçon arrière prolongeant le châssis 8 ' ' et se prolongeant vers l'avant en deux branches ou canalisations 9' 'a et 9' 'b distinctes.  The pipe 9 '' here has an evolutionary shape comprising a rear section extending the frame 8 '' and extending forwardly in two branches or pipes 9 '' a and 9 '' b distinct.
La branche supérieure 9a' ' collecte ainsi l'air provenant d'une grille supérieure de la calandre alors que la branche inférieure 9b' ' collecte l'air provenant d'une grille inférieure de cette calandre. Cette conduite 9' ' présente ainsi dans sa partie arrière une section transversale formant un contour fermé et dans sa partie avant une section transversale délimitant deux contours fermés.  The upper branch 9a '' thus collects air from an upper grid of the shell while the lower arm 9b '' collects air from a lower grid of this shell. This pipe 9 '' thus has in its rear part a cross section forming a closed contour and in its front part a cross section delimiting two closed contours.
Complémentairement , le bloc l'' peut aussi être équipé d'un ventilateur pour forcer la circulation d'air lorsque les circonstances l'imposent, ce ventilateur pouvant alors être monté comme dans le premier mode de réalisation ou comme dans le second mode de réalisation. D'une manière générale, il est à noter que dans les différents modes de réalisation, compte tenu de la position de la conduite qui est située entre la calendre du véhicule et ses échangeurs, elle peut avantageusement être dimensionnée pour constituer un absorbeur de choc piéton. Autrement dit, sa raideur mécanique dans la direction longitudinale peut être choisie pour participer à l'absorption du choc d'un piéton heurtant la calendre avant du véhicule. Complementarily, the block '' may also be equipped with a fan to force the air circulation when circumstances dictate, this fan can then be mounted as in the first embodiment or as in the second embodiment . In general, it should be noted that in the various embodiments, given the position of the pipe which is located between the vehicle seat and its exchangers, it can advantageously be sized to constitute a pedestrian shock absorber . In other words, its mechanical stiffness in the longitudinal direction can be chosen to participate in the absorption of the impact of a pedestrian striking the front calender of the vehicle.
La figure 6 représente un quatrième mode de réalisation de l'invention. Ici, le bloc d'échange thermique qui est repéré par 1 ' ' ' comporte les mêmes composants que le bloc thermique 1 des figures 1 et 2 , à la différence près qu'il comporte trois échangeurs dont deux sont placés l'un au dessus de l'autre.  Figure 6 shows a fourth embodiment of the invention. Here, the heat exchange block which is marked by 1 '' 'has the same components as the heat block 1 of Figures 1 and 2, with the difference that it comprises three exchangers two of which are placed one above the other.
Le bloc d'échange thermique l' '' est monté en arrière d'une calandre avant non représentée et en vis-à-vis d'une grille non représentée équipant cette calandre. Le bloc thermique l' ' ' comporte aussi une conduite 9' ' ' située entre la grille et le châssis (non représenté) qu'elle prolonge. The heat exchange block 1''is mounted behind a not shown front calender and vis-à-vis a not shown grid equipping the calender. The thermal block '' 'also comprises a pipe 9' '' located between the grid and the frame (not shown) that it extends.
Le châssis supporte et entoure plusieurs éléments, dont les échangeurs 3 ' ' ' et 4 ' ' ' et 5' ' ' , 1 ' échangeur 3 ' ' étant situé en arrière des échangeurs 4''' et 5''' dans le sens de circulation de l'air A'''. Ici, les échangeurs 4''' et 5''' sont situés l'un au dessus de l'autre. The frame supports and surrounds several elements, including exchangers 3 '' 'and 4' '' and 5 '' ', 1' 'exchanger 3' 'being located behind the exchangers 4' '' and 5 '' 'in the direction of air circulation A '' '. Here, the exchangers 4 '' 'and 5' '' are located one above the other.
Le bloc thermique l' '' comporte en outre des volets The thermal block '' has moreover flaps
13''' pilotés par un actionneur non représenté, ces volets13 '' 'controlled by a not shown actuator, these shutters
13 ' ' ' étant là aussi montés dans la section interne du châssis 8 ' ' ' . Les volets 13 ' ' ' sont là aussi mobiles entre une position ouverte laisser passer tout l'air A'1', et une position fermée pour interdire à l'air A' '' de passer à travers les échangeurs. 13 '''being also mounted in the internal section of the chassis 8'''. The flaps 13 '''are also movable between an open position let all the air A' 1 ', and a closed position to prevent air A''' to pass through the exchangers.
Ici, le bloc l'1' est équipé d'un ventilateur 11''' coopérant avec une buse 12''' pour forcer la circulation d'air lorsque les circonstances l'imposent, ce ventilateur étant ici monté à l'avant du bloc thermique l''' . Dans ce mode de réalisation, il est prévu des déflecteurs ou convoyeurs aérodynamiques 20. Dans ce mode de réalisation, les convoyeurs 20 sont incorporés dans le bloc thermiques l' . Dans le mode de réalisation illustré ici, le bloc thermique l' ' ' comporte 3 convoyeurs aérodynamiques 20. Here, the block 1 'is equipped with a fan 11''' cooperating with a nozzle 12 '''to force air circulation when circumstances dictate, this fan being here mounted in front of the thermal block ''. In this embodiment, aerodynamic deflectors or conveyors 20 are provided. In this embodiment, the conveyors 20 are incorporated in the thermal block 1 '. In the embodiment illustrated here, the thermal block '''comprises 3 aerodynamic conveyors 20.
Les convoyeurs aérodynamiques sont disposés entre les échangeurs thermiques et les volets mobiles 13''' .  The aerodynamic conveyors are arranged between the heat exchangers and the movable flaps 13 '' '.
Ces convoyeurs aérodynamiques 20 ont pour but d'orienter le flux d'air entrant, vers les zones des échangeurs thermiques masquées par une poutre parechoc 22.  These aerodynamic conveyors 20 are intended to guide the flow of air entering, to the areas of the heat exchangers masked by a bumper beam 22.
Dans le mode de réalisation illustré ici, la poutre parechoc 22 du véhicule automobile est équipée, elle aussi d'un déflecteur 24 réalisé, ici, sous la forme d'un capot. Le capot est placé à l'arrière de la poutre 22 dans le sens de circulation de l'air A' ' ' .  In the embodiment illustrated here, the bumper beam 22 of the motor vehicle is also equipped with a deflector 24 made here in the form of a cover. The cover is placed at the rear of the beam 22 in the direction of air circulation A '' '.

Claims

REVENDICATIONS
1. Bloc d'échange thermique (1 ; l' ; l' ') pour véhicule automobile incluant au moins un échangeur thermique (2, 3, 4 ; 3', 4' ; 3'', 4''), ce bloc (1 ; l' ; l'') étant destiné à être interposé en arrière d'une calandre avant (6 ; 6' ; 6' ') d'un véhicule et destiné à être traversé par de l'air issu d'une ouverture de cette calandre, ce bloc comprenant un ensemble de volets mobiles (13 ; 13' ; 13 ' ' ) entre une position ouverte et une position fermée pour moduler le débit d'air (A ; A' ; A' ') traversant l' échangeur thermique (2, 3, 4 ; 3', 4' ; 3'', 4''), et une conduite (9 ; 9' ; 9'') apte à s'interposer entre l'ouverture de la calandre et ledit bloc d'échange thermique (1 ; l' ; l' ') . 1. Heat exchange block (1; 1'; 1'') for a motor vehicle including at least one heat exchanger (2, 3, 4; 3', 4 '; 3' ', 4' '), this block (1; l ';' ') being intended to be placed behind a front calender (6; 6'; 6 '') of a vehicle and to be traversed by air coming from a opening of this calender, this block comprising a set of movable flaps (13; 13 '; 13' ') between an open position and a closed position to modulate the air flow (A; A'; A '') passing through the heat exchanger (2, 3, 4, 3 ', 4', 3 '', 4 ''), and a pipe (9; 9 '; 9' ') capable of interposing between the opening of the shell and said heat exchange block (1; l '; l' ').
2. Bloc d'échange thermique selon la revendication 1, dans lequel 1 ' échangeur thermique (2, 3, 4 ; 3', 4' ; 3' ', 4' ') est entouré par un châssis porteur (8 ; 8' ; 8' ') constituant un prolongement de la conduite (9 ; 9' ; 9' ') .  2. Heat exchange block according to claim 1, wherein the heat exchanger (2, 3, 4; 3 ', 4'; 3 '', 4 '') is surrounded by a carrier frame (8; 8 '). 8 '') constituting an extension of the pipe (9; 9 '; 9' ').
3. Bloc d'échange thermique (1 ; l' ; l' ') comprenant plusieurs échangeurs thermiques (2, 3, 4 ; 3', 4' ; 3' ', 4' ') disposés les uns derrière les autres pour être traversés successivement par l'air issu de l'ouverture de la calandre.  3. Heat exchange block (1; l ';' ') comprising several heat exchangers (2, 3, 4; 3', 4 '; 3' ', 4' ') arranged one behind the other to be crossed successively by the air coming from the opening of the calender.
4. Bloc d'échange thermique selon l'une des revendications 1 à 3, dans lequel la conduite est pourvue de moyens de solidarisation étanches pour la solidariser de manière étanche avec la calandre pour assurer qu'en position fermée des volets (13 ; 13' ; 13''), le débit d'air (A ; A' ; A' ') traversant l'ouverture ( 7 ; 7 ' ; 7 ' ') et le ou les échangeurs thermiques (2, 3, 4 ; 3', 4' ; 3'', 4'') soit sensiblement nul.  4. heat exchange block according to one of claims 1 to 3, wherein the pipe is provided with sealed securing means for securing it in a sealed manner with the calender to ensure that in the closed position of the flaps (13; '; 13' '), the air flow (A; A'; A '') passing through the opening (7; 7 '; 7' ') and the heat exchanger (s) (2, 3, 4; ', 4', 3 '', 4 '') is substantially zero.
5. Bloc d'échange thermique selon l'une des revendications 1 à 4, comprenant en outre un ventilateur (11 ; 11') pour augmenter le débit d'air (A ; A') traversant les échangeurs (2, 3, 4 ; 3', 4') lorsque la vitesse du véhicule est insuffisante.  5. Heat exchange block according to one of claims 1 to 4, further comprising a fan (11; 11 ') for increasing the air flow (A; A') passing through the exchangers (2, 3, 4). 3 ', 4') when the speed of the vehicle is insufficient.
6. Bloc d'échange thermique selon l'une des revendications précédentes, dans lequel la conduite (9 ; 9' ; 9'') est dimensionnée pour constituer un absorbeur de choc piéton . 6. Heat exchange block according to one of the preceding claims, wherein the pipe (9; 9 '; 9 '') is dimensioned to constitute a pedestrian shock absorber.
7 . Bloc d'échange thermique selon l'une des revendications précédentes comportant en outre au moins un convoyeur aérodynamique (20) disposé entre l'ensemble de volets mobiles (13''') et un échangeur thermique (3''' ;  7. Heat exchange block according to one of the preceding claims further comprising at least one aerodynamic conveyor (20) disposed between the set of movable flaps (13 '' ') and a heat exchanger (3' '';
EP10757432A 2009-09-29 2010-09-28 Heat exchange block for a motor vehicle Withdrawn EP2483098A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0904647A FR2950574B1 (en) 2009-09-29 2009-09-29 THERMAL EXCHANGE BLOCK FOR MOTOR VEHICLE
PCT/EP2010/064341 WO2011039170A1 (en) 2009-09-29 2010-09-28 Heat exchange block for a motor vehicle

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US8936121B2 (en) 2015-01-20
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US20120241128A1 (en) 2012-09-27
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WO2011039170A1 (en) 2011-04-07
CN102574459A (en) 2012-07-11

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