WO2021123557A1 - Cooling module for motor vehicle with tangential-flow turbomachine - Google Patents

Cooling module for motor vehicle with tangential-flow turbomachine Download PDF

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Publication number
WO2021123557A1
WO2021123557A1 PCT/FR2020/052317 FR2020052317W WO2021123557A1 WO 2021123557 A1 WO2021123557 A1 WO 2021123557A1 FR 2020052317 W FR2020052317 W FR 2020052317W WO 2021123557 A1 WO2021123557 A1 WO 2021123557A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling module
heat exchanger
support
tangential
shaft
Prior art date
Application number
PCT/FR2020/052317
Other languages
French (fr)
Inventor
Kamel Azzouz
Sébastien Garnier
Amrid MAMMERI
Original Assignee
Valeo Systemes Thermiques
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 filed Critical Valeo Systemes Thermiques
Publication of WO2021123557A1 publication Critical patent/WO2021123557A1/en

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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
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
    • F04D29/5833—Cooling at least part of the working fluid in a heat exchanger flow schemes and regulation thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/524—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps shiftable members for obturating part of the flow path
    • 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 cooling module for a motor vehicle, with a tangential turbomachine.
  • the invention also relates to a motor vehicle provided with such a cooling module.
  • a motor vehicle heat exchanger generally comprises tubes, in which a heat transfer fluid is intended to circulate, in particular a liquid such as water, and heat exchange elements connected to these tubes, often designated by the term “ fins ”or“ spacers ”.
  • the fins increase the exchange surface between the tubes and the ambient air.
  • a ventilation device in order to further increase the heat exchange between the heat transfer fluid and the ambient air, it is common for a ventilation device to be used in addition, to generate or increase an air flow directed towards tubes and fins.
  • such a ventilation device comprises a propeller fan.
  • the air flow generated by the blades of such a fan is turbulent, in particular due to the circular geometry of the propeller, and generally only reaches part of the surface of the exchanger. heat (circular area of the exchanger facing the fan impeller). The heat exchange is therefore not homogeneous over the entire surface of the tubes and fins.
  • the blades when starting the fan is not necessary (typically when the heat exchange with unaccelerated ambient air is sufficient to cool the coolant circulating in the exchanger), the blades partially obstruct the flow of ambient air to the tubes and fins, which interferes with air circulation to the exchanger and thus limits heat exchange with the heat transfer fluid.
  • Such a fan is also relatively bulky, in particular because of the dimensions of the propeller necessary to obtain effective engine cooling, which makes its integration into a motor vehicle long and difficult.
  • the aim of the invention is to at least partially remedy these drawbacks.
  • the invention relates to a cooling module for a motor vehicle, comprising at least one tangential turbomachine comprising a bladed wheel provided with blades movably mounted around a shaft, at least one heat exchanger, at at least one support, having an opening receiving the heat exchanger, and on which are fixed at least one water box associated with the heat exchanger and the shaft of the paddle wheel.
  • At least one tangential turbomachine is used which makes it possible to obtain an air flow which is better distributed over one or more exchangers in a homogeneous manner.
  • the support makes it possible to simplify the module manufacturing process while ensuring better mechanical strength and compactness of the module, thanks to the integration of the heat exchanger in the structure of the module.
  • the module comprises two tangential turbomachines each comprising a paddle wheel provided with blades movably mounted around a shaft, each of said shafts being fixed on said at least one support.
  • the module comprises a volute associated with each tangential turbomachine, each of the volutes comprising a casing extending between two ends and delimiting a hollow space for receiving the paddle wheel, the support comprising a part of 'sealing of one of the ends of the envelope.
  • the closure part comprises an orifice for the passage of the shaft of each of the paddle wheels.
  • said at least one water box is mounted integral with a part of the support comprising the opening receiving the heat exchanger.
  • the module comprises a set of movable flaps between a closed position of the cooling module and an open position of the cooling mobile, said set of flaps being arranged upstream and / or downstream of said at least one heat exchanger relative to a direction of flow of an air flow in the cooling module.
  • the shutters are passive or mounted controlled by a control means.
  • each envelope comprises a wall shaped to house the paddle wheel and guide the air to an air outlet outside the module.
  • the wall has the shape of a truncated spiral.
  • the support comprises a part for receiving flaps, of planar shape, comprising two contiguous trapezoids.
  • the cooling module comprises a set of flaps movable between a fully closed position of a work surface delimited by the heat exchanger and an open position of the surface.
  • These shutters can be passive, or active.
  • the flaps are arranged downstream and / or upstream with respect to the heat exchanger relative to a direction of flow of an air flow passing through the cooling module.
  • the flaps are arranged to pivot about an axis parallel or perpendicular to the axis of rotation of said at least one turbomachine.
  • each water box and each support are made of aluminum.
  • said at least one turbomachine may consist of at least two parts each comprising blades movable in rotation.
  • a motor is placed between said at least two parts to drive the blades in rotation.
  • the invention also relates to a method of manufacturing a cooling module for a motor vehicle, comprising a step of brazing at least one heat exchanger and at least one support having an opening receiving the exchanger. thermal, a step of fixing a water box associated with the heat exchanger to said at least one support, and a step of fixing to said at least one support of a shaft of at least one tangential turbomachine comprising a paddle wheel provided with blades mounted movably around said shaft.
  • the method comprises a step of fixing a volute associated with each tangential turbomachine, each of the volutes comprising a casing extending between two ends and delimiting a hollow space for receiving the paddle wheel, the support comprising a part for closing off one of the ends of the envelope.
  • the step of fixing a volute associated with each turbomachine is a step of brazing the volute.
  • FIG. 1 schematically represents the front part of a motor vehicle, seen from the side;
  • FIG. 2 is a schematic perspective view of a cooling module according to the present invention which can be implemented in the motor vehicle of FIG. 1;
  • FIG. 3 is an exploded perspective view of the module of FIG. 2.
  • FIG. 1 schematically illustrates the front part of a motor vehicle 10 with a motor 12.
  • the vehicle 10 comprises in particular a body 14 and a bumper 16 carried by a frame (not shown) of the motor vehicle 10.
  • the body 14 defines a cooling bay 18, that is to say an opening through the body 14.
  • the cooling bay 18 can be unique as in the example illustrated. Alternatively, however, the body 14 can define a plurality of cooling bays.
  • the cooling bay 18 is located in the lower part of the front face 14a of the body 14. In the example illustrated, the cooling bay 18 is located under the bumper 16.
  • a grid 20 can be arranged in the cooling bay 18 to prevent projectiles from passing through the cooling bay 18.
  • a cooling module 22 is placed opposite the cooling bay 18. The grid 20 makes it possible in particular to protect this cooling module 22.
  • the X direction corresponds to a longitudinal direction of travel of the motor vehicle.
  • the direction Y, transverse is defined as being perpendicular to the longitudinal direction X. More specifically, the longitudinal and transverse directions X and Y may for example belong substantially to a substantially horizontal plane.
  • the Z direction corresponds in turn to a vertical direction.
  • the cooling module 22 is more visible in Figures 2 and 3.
  • the cooling module 22 comprises a ventilation device 24 associated with at least one heat exchanger 26.
  • the module 22 comprises a single heat exchanger 26.
  • the illustrated exchanger 26 has a generally parallelepipedal shape, a length L extending parallel to the Y axis, a depth P s' extends parallel to the X axis and a height H extends parallel to the Z axis.
  • the heat exchanger 26 defines a surface S, called work surface, a section of which is substantially rectangular in a plane (Y, Z).
  • the surface S is delimited by two opposite sides 11, I2 corresponding to the length of the exchanger 26 and by two other opposite sides h1, h2, corresponding to the height of the exchanger 26.
  • the invention is not limited to a single exchanger and the module can include a plurality of exchangers, of the same dimensions or of different dimensions, depending on the needs of the vehicle.
  • the module can include a plurality of exchangers, of the same dimensions or of different dimensions, depending on the needs of the vehicle.
  • the heat exchanger 26 is provided with two opposite water boxes, 28-1, 28-2, extending along the height of the exchanger 26, on the part on both sides of length L.
  • the water boxes ensure the supply of coolant to the heat exchanger 26.
  • the ventilation device 24 comprises at least one tangential fan, or more generally a tangential turbomachine, which draws an air flow in contact with the heat exchanger (s) 26.
  • the cooling module 24 comprises two tangential turbomachines 30-1, 30-2 mounted suction, the associated air flows being denoted respectively F1 and F2.
  • Each of the tangential turbomachines 30-1, 30-2 comprises a paddle wheel 32-1, 32-2, visible in Figure 3.
  • Each paddle wheel 32-1, 32-2 comprises a plurality of blades 34 -1, 34-2 rotatably mounted around a shaft 36-1, 36-2.
  • the shafts 36-1, 36-2 extend parallel to the transverse axis Y.
  • each of the tangential turbomachines can be made up of two parts P1, P2, the blades 34-1, 34-2 being distributed over the two parts so that the two parts are identical (this is the case of Figure 3) or on the contrary different.
  • a motor M is placed between the two parts to drive the blades in rotation.
  • the cooling module 22 also comprises a volute 38-1, 38-2 associated respectively with the impeller 32-1, 32-2.
  • the volute 38-1 of the first turbomachine 30-1 comprises a casing 40-1 consisting of a wall 42-1 shaped to house the impeller 32-1 and guide the air having passed through the exchanger 26 around the first turbomachine 30-1 to a first outlet 44-1 of the air outside the module 22.
  • the wall is in the form of a truncated spiral.
  • volute 38-2 of the first turbomachine 30-2 comprises a casing 40-2 consisting of a shaped wall 42-2 to house the impeller 32-2 and guide the air having passed through the exchanger 26 around the first turbomachine 30-2 up to a first outlet 44-2 of the air outside the module 22.
  • the wall is in the form of a truncated spiral.
  • the volutes 38-1, 38-2 are arranged symmetrically with respect to a perpendicular bisector of the edges h1, h2.
  • the wall 42-1 extends along the axis X between two ends 46-1, 48-2 (respectively 46-2, 48-2) and defines a hollow space E for receiving the paddle wheel between these two ends 46-1, 48-1 (respectively 46-2, 48-2).
  • the cooling module 22 comprises at least one support.
  • the cooling module 22 comprises two supports 50-1, 50-2, now detailed.
  • Each support 50-1, 50-2 comprises a part 52-1, 52-2 for securing the heat exchanger 26 and the water box 28-1, 28-2.
  • the part 52-1, 52-2 has the general shape of a rectangular bead 54-1, 54-2, delimiting an opening 56-1, 56-2.
  • the edge h1, h2 of the heat exchanger 26 is inserted into the opening 56-1, 56-2 while the water box 28-1, 28-2 is advantageously fixed on the cord 54-1, 54-2 .
  • the support 50-1 also comprises a closing part 58-1 of the end 46-1 of the wall 42-1 delimiting the volute 40-1, and a sealing part 60-1 of the end 46-2 of the wall 44-2 delimiting the volute 42-2.
  • Each of the parts 58-1, 60-1 is provided with an orifice O for the passage of the shaft of the paddle wheel.
  • the support 50-2 comprises a closing part 58-2 of the end 48-1 of the wall 42-1, and a sealing part 60-2 of the end 48- 2 of wall 42-2.
  • Each of the parts 58-2, 60-2 is provided with an orifice O for passing through the shaft of the paddle wheel.
  • the support 50-1 comprises a part 62-1 for receiving shutters V which will be described later.
  • Part 62-1 has a planar shape, delimited on the one hand by a rectilinear edge 64-1 integral with an edge of the rectangular bead 54-1, extending parallel to the Z axis, and on the other hand by two inclined edges 66-
  • edges 64-1, 66-1, and 68-2 draw two trapezoids symmetrical about an axis parallel to the Y axis passing through the middle of edge 64-1.
  • the support 50-2 comprises a part 62-2 for receiving shutters V which will be described later.
  • the part 62-2 has a planar shape, delimited on the one hand by a rectilinear edge 64-2 integral with an edge of the rectangular bead 54-2, extending parallel to the Z axis, and on the other hand by two inclined edges 66-
  • edges 64-2, 66-2, and 68-2 draw two trapezoids symmetrically about an axis parallel to the Y axis passing through the middle of edge 64-2.
  • the supports 50-1, 50-2 are multifunction parts, since they ensure the fixing of the heat exchanger 26, the water boxes 28-1, 28-2, the shafts of the paddle wheels, or even in addition the fixing of the walls of the volutes.
  • This multifunction allows a simplified manufacturing process, as will be detailed later, as well as a strengthening of the mechanical strength of the cooling module 22 and greater compactness of the module 22.
  • the cooling module 22 comprises a set of flaps V movable between a fully closed position of the work surface S and an open position of the surface S. These flaps V can be passive, to which case the movement between the open and closed positions is due to the speed of the air passing through the module 22, or active, in which case the movement between the open and closed positions is controlled by an actuator.
  • the flaps In the closed position of the flaps, they make it possible to direct the flow of air created towards the associated turbomachine.
  • an open position of the flaps generally reached while the associated turbomachine is off, makes it possible to direct at least part of the air flow created for example by the speed of the vehicle on which the cooling module 22 is mounted, without pass through the associated turbomachine 28-1, 28-2. This derives the air flow from the turbomachine.
  • the open position is particularly advantageous when the vehicle is traveling at high speed, in which case it is possible to shut down the turbomachines.
  • all of the flaps are arranged downstream with respect to the heat exchanger 26 relative to a direction of flow of the air flows F1, F2 passing through the cooling module 22.
  • the invention is not limited to this configuration and it is possible to position the flaps upstream of the exchanger 26, or else to provide a set of flaps upstream and a set of flaps downstream of the heat exchanger 26.
  • the heat exchanger 26, the water boxes 28-1, 28-2, the supports 50-1, 50-2, or even the walls 42-1, 42-2 are made of aluminum .
  • the subject of the invention is also a method for manufacturing the module 22, comprising a step of brazing at least the heat exchanger 26, and supports 50-1, 50-2.
  • the method also includes a step of fixing the water boxes, optionally during the brazing step, as well as a step of fixing the shafts to the supports 50-1, 50-2. Each volute is attached or brazed on the support 50-1, 50-2.
  • the manufacturing process 22 is particularly simplified thanks to the brazing of the constituent elements of the module 22.
  • the invention is not limited to the single example described above. On the contrary, the invention is capable of numerous variants accessible to those skilled in the art.
  • the ventilation device comprises two turbomachines.
  • the ventilation device may include a single turbomachine or more than two turbomachines.
  • the flaps pivot about an axis parallel to the axis of rotation of the turbomachines.
  • the flap (s) may / may pivot about an axis perpendicular to the axis of rotation of the turbine engine (s).

Abstract

The invention relates to a cooling module for a motor vehicle, comprising: - at least one tangential-flow turbomachine (30-1, 30-2) comprising an impeller wheel (32-1, 32-2) provided with blades (34-1, 34-2) mounted so as to be able to move about a shaft (36-1, 36-2), - at least one heat exchanger (26), - at least one support (50-1, 50-2), having an opening (56-1, 56-2) receiving the heat exchanger (26), and to which at least one water tank (28-1, 28-2) associated with the heat exchanger (26) and the shaft (36-1, 36-2) of the impeller wheel (32-1, 32-2) are attached.

Description

MODULE DE REFROIDISSEMENT POUR VÉHICULE AUTOMOBILE À TURBOMACHINE TANGENTIELLE TANGENTIAL TURBOMACHINE MOTOR VEHICLE COOLING MODULE
Domaine technique Technical area
[0001] L’invention se rapporte à un module de refroidissement pour véhicule automobile, à turbomachine tangentielle. L’invention vise également un véhicule automobile muni d’un tel module de refroidissement. The invention relates to a cooling module for a motor vehicle, with a tangential turbomachine. The invention also relates to a motor vehicle provided with such a cooling module.
Technique antérieure Prior art
[0002] Les véhicules à moteur, qu’ils soient à combustion ou électriques, ont besoin d'évacuer les calories que génère leur fonctionnement et sont pour cela équipés d'échangeurs de chaleur. Un échangeur de chaleur de véhicule automobile comprend généralement des tubes, dans lesquels un fluide caloporteur est destiné à circuler, notamment un liquide tel que l’eau, et des éléments d’échange de chaleur reliés à ces tubes, souvent désignés par le terme « ailettes » ou « intercalaires ». Les ailettes permettent d’augmenter la surface d’échange entre les tubes et l’air ambiant. [0002] Motor vehicles, whether combustion or electric, need to remove the calories generated by their operation and are therefore equipped with heat exchangers. A motor vehicle heat exchanger generally comprises tubes, in which a heat transfer fluid is intended to circulate, in particular a liquid such as water, and heat exchange elements connected to these tubes, often designated by the term " fins ”or“ spacers ”. The fins increase the exchange surface between the tubes and the ambient air.
[0003] Toutefois, afin d’augmenter encore l’échange de chaleur entre le fluide caloporteur et l’air ambiant, il est fréquent qu’un dispositif de ventilation soit utilisé en sus, pour générer ou accroître un flux d’air dirigé vers les tubes et les ailettes. However, in order to further increase the heat exchange between the heat transfer fluid and the ambient air, it is common for a ventilation device to be used in addition, to generate or increase an air flow directed towards tubes and fins.
[0004] De façon connue, un tel dispositif de ventilation comprend un ventilateur à hélice. In known manner, such a ventilation device comprises a propeller fan.
[0005] Le flux d’air généré par les pales d’un tel ventilateur est turbulent, notamment en raison de la géométrie circulaire de l’hélice, et n’atteint en général qu’une partie seulement de la surface de l’échangeur de chaleur (zone circulaire de l’échangeur faisant face à l’hélice du ventilateur). L’échange de chaleur ne se fait donc pas de façon homogène sur toute la surface des tubes et des ailettes. The air flow generated by the blades of such a fan is turbulent, in particular due to the circular geometry of the propeller, and generally only reaches part of the surface of the exchanger. heat (circular area of the exchanger facing the fan impeller). The heat exchange is therefore not homogeneous over the entire surface of the tubes and fins.
[0006] En outre, lorsque la mise en marche du ventilateur ne s’avère pas nécessaire (typiquement lorsque l’échange de chaleur avec de l’air ambiant non accéléré suffit à refroidir le fluide caloporteur circulant dans l’échangeur), les pales obstruent en partie l’écoulement de l’air ambiant vers les tubes et les ailettes, ce qui gêne la circulation d’air vers l’échangeur et limite ainsi l’échange de chaleur avec le fluide caloporteur. [0006] In addition, when starting the fan is not necessary (typically when the heat exchange with unaccelerated ambient air is sufficient to cool the coolant circulating in the exchanger), the blades partially obstruct the flow of ambient air to the tubes and fins, which interferes with air circulation to the exchanger and thus limits heat exchange with the heat transfer fluid.
[0007] Un tel ventilateur est en outre relativement encombrant, à cause notamment des dimensions nécessaires de l’hélice pour obtenir un refroidissement moteur effectif, ce qui rend long et délicat son intégration dans un véhicule automobile. [0007] Such a fan is also relatively bulky, in particular because of the dimensions of the propeller necessary to obtain effective engine cooling, which makes its integration into a motor vehicle long and difficult.
[0008] Le but de l’invention est de remédier au moins partiellement à ces inconvénients. [0008] The aim of the invention is to at least partially remedy these drawbacks.
Exposé de l’invention Disclosure of the invention
[0009] À cet effet, l’invention a pour objet un module de refroidissement pour véhicule automobile, comprenant au moins une turbomachine tangentielle comprenant une roue à aubes munie de pales montées mobiles autour d’un arbre, au moins un échangeur thermique, au moins un support, présentant une ouverture recevant l’échangeur thermique, et sur lequel sont fixés au moins une boite à eau associée à l’échangeur thermique et l’arbre de la roue à aubes. [0009] To this end, the invention relates to a cooling module for a motor vehicle, comprising at least one tangential turbomachine comprising a bladed wheel provided with blades movably mounted around a shaft, at least one heat exchanger, at at least one support, having an opening receiving the heat exchanger, and on which are fixed at least one water box associated with the heat exchanger and the shaft of the paddle wheel.
[0010] Ainsi, avantageusement, on met en oeuvre au moins une turbomachine tangentielle qui permet d’obtenir un flux d’air mieux réparti sur un ou plusieurs échangeurs de façon homogène. [0010] Thus, advantageously, at least one tangential turbomachine is used which makes it possible to obtain an air flow which is better distributed over one or more exchangers in a homogeneous manner.
[0011] En outre, le support permet de simplifier le procédé de fabrication du module tout en assurant une meilleure tenue mécanique et une compacité du module, grâce à l’intégration de l’échangeur thermique dans la structure même du module. [0011] In addition, the support makes it possible to simplify the module manufacturing process while ensuring better mechanical strength and compactness of the module, thanks to the integration of the heat exchanger in the structure of the module.
[0012] Selon un autre aspect, le module comprend deux turbomachines tangentielles comprenant chacune une roue à aubes munie de pales montées mobiles autour d’un arbre, chacun desdits arbres étant fixé sur ledit au moins un support. [0012] According to another aspect, the module comprises two tangential turbomachines each comprising a paddle wheel provided with blades movably mounted around a shaft, each of said shafts being fixed on said at least one support.
[0013] Selon un autre aspect, le module comprend une volute associée à chaque turbomachine tangentielle, chacune des volutes comprenant une enveloppe s’étendant entre deux extrémités et délimitant un espace creux de réception de la roue à aubes, le support comprenant une partie d’obturation de l’une des extrémités de l’enveloppe. [0014] Selon un autre aspect, la partie d’obturation comprend un orifice de passage de l’arbre de chacune des roues à aubes. According to another aspect, the module comprises a volute associated with each tangential turbomachine, each of the volutes comprising a casing extending between two ends and delimiting a hollow space for receiving the paddle wheel, the support comprising a part of 'sealing of one of the ends of the envelope. [0014] According to another aspect, the closure part comprises an orifice for the passage of the shaft of each of the paddle wheels.
[0015] Selon un autre aspect, ladite au moins une boîte à eau est montée solidaire d’une partie du support comprenant l’ouverture recevant l’échangeur thermique. [0015] According to another aspect, said at least one water box is mounted integral with a part of the support comprising the opening receiving the heat exchanger.
[0016] Selon un autre aspect, le module comprend un ensemble de volets mobiles entre une position de fermeture du module de refroidissement et une position d’ouverture du mobile de refroidissement, ledit ensemble de volets étant disposé en amont et/ou en aval dudit au moins un échangeur thermique relativement à un sens d’écoulement d’un flux d’air dans le module de refroidissement. According to another aspect, the module comprises a set of movable flaps between a closed position of the cooling module and an open position of the cooling mobile, said set of flaps being arranged upstream and / or downstream of said at least one heat exchanger relative to a direction of flow of an air flow in the cooling module.
[0017] Selon un autre aspect, les volets sont passifs ou montés pilotés par un moyen de commande. According to another aspect, the shutters are passive or mounted controlled by a control means.
[0018] Selon un autre aspect, chaque enveloppe comprend une paroi conformée pour loger la roue à aubes et guider l’air jusqu’à une sortie d’air hors du module. [0018] According to another aspect, each envelope comprises a wall shaped to house the paddle wheel and guide the air to an air outlet outside the module.
[0019] Selon un autre aspect, la paroi présente une forme de spirale tronquée. According to another aspect, the wall has the shape of a truncated spiral.
[0020] Selon un autre aspect, le support comprend une partie de réception de volets, de forme plane, comprenant deux trapèzes jointifs. According to another aspect, the support comprises a part for receiving flaps, of planar shape, comprising two contiguous trapezoids.
[0021] Selon un autre aspect, le module de refroidissement comprend un ensemble de volets mobiles entre une position de fermeture complète d’une surface de travail délimitée par l’échangeur thermique et une position d’ouverture de la surface. Ces volets peuvent être passifs, ou actifs. [0021] According to another aspect, the cooling module comprises a set of flaps movable between a fully closed position of a work surface delimited by the heat exchanger and an open position of the surface. These shutters can be passive, or active.
[0022] Selon un autre aspect, les volets sont disposés en aval et/ou en amont par rapport à l’échangeur thermique relativement à un sens d’écoulement d’un flux d’air traversant le module de refroidissement. [0022] According to another aspect, the flaps are arranged downstream and / or upstream with respect to the heat exchanger relative to a direction of flow of an air flow passing through the cooling module.
[0023] Selon un autre aspect, les volets sont agencés pour pivoter autour d’un axe parallèle ou perpendiculaire à l’axe de rotation de ladite au moins une turbomachine. [0023] According to another aspect, the flaps are arranged to pivot about an axis parallel or perpendicular to the axis of rotation of said at least one turbomachine.
[0024] Selon un autre aspect, chaque boîte à eau et chaque support sont en aluminium. According to another aspect, each water box and each support are made of aluminum.
[0025] Selon un autre aspect, ladite au moins une turbomachine peut être constituée en au moins deux parties comprenant chacune des pales mobiles en rotation. [0026] Selon un autre aspect, un moteur est placé entre lesdites au moins deux parties pour entraîner les pales en rotation. [0025] According to another aspect, said at least one turbomachine may consist of at least two parts each comprising blades movable in rotation. According to another aspect, a motor is placed between said at least two parts to drive the blades in rotation.
[0027] L’invention a également pour objet un procédé de fabrication d’un module de refroidissement pour véhicule automobile, comprenant une étape de brasage d’au moins un échangeur thermique et d’au moins un support présentant une ouverture recevant l’échangeur thermique, une étape de fixation d’une boîte à eau associée à l’échangeur thermique audit au moins un support, et une étape de fixation audit au moins un support d’un arbre d’au moins une turbomachine tangentielle comprenant une roue à aubes munie de pales montées mobiles autour dudit arbre. The invention also relates to a method of manufacturing a cooling module for a motor vehicle, comprising a step of brazing at least one heat exchanger and at least one support having an opening receiving the exchanger. thermal, a step of fixing a water box associated with the heat exchanger to said at least one support, and a step of fixing to said at least one support of a shaft of at least one tangential turbomachine comprising a paddle wheel provided with blades mounted movably around said shaft.
[0028] Selon un autre aspect, le procédé comprend une étape de fixation d’une volute associée à chaque turbomachine tangentielle, chacune des volutes comprenant une enveloppe s’étendant entre deux extrémités et délimitant un espace creux de réception de la roue à aubes, le support comprenant une partie d’obturation de l’une des extrémités de l’enveloppe. According to another aspect, the method comprises a step of fixing a volute associated with each tangential turbomachine, each of the volutes comprising a casing extending between two ends and delimiting a hollow space for receiving the paddle wheel, the support comprising a part for closing off one of the ends of the envelope.
[0029] Selon un autre aspect, l’étape de fixation d’une volute associée à chaque turbomachine est une étape de brasage de la volute. [0029] According to another aspect, the step of fixing a volute associated with each turbomachine is a step of brazing the volute.
Brève description des dessins Brief description of the drawings
[0030] D’autres caractéristiques, détails et avantages de l’invention apparaîtront à la lecture de la description détaillée ci-après, et à l’analyse des dessins annexés, sur lesquels : [0030] Other features, details and advantages of the invention will become apparent on reading the detailed description below, and on analyzing the accompanying drawings, in which:
[0031] [Fig. 1] représente schématiquement la partie avant d’un véhicule automobile, vu de côté ; [0031] [Fig. 1] schematically represents the front part of a motor vehicle, seen from the side;
[0032] [Fig. 2] est une vue schématique en perspective d’un module de refroidissement selon la présente invention pouvant être mis en oeuvre dans le véhicule automobile de la figure 1 ; et [0032] [Fig. 2] is a schematic perspective view of a cooling module according to the present invention which can be implemented in the motor vehicle of FIG. 1; and
[0033] [Fig. 3] est une vue en perspective éclatée du module de la figure 2. [0033] [Fig. 3] is an exploded perspective view of the module of FIG. 2.
Description de modes de réalisation [0034] Dans la suite de la description, les éléments identiques ou de fonction identique portent le même signe de référence. À fin de concision de la présente description, ces éléments ne sont pas décrits en détails dans chaque mode de réalisation. Au contraire, seules les différences entre les variantes de réalisation sont décrites en détails. Description of embodiments In the remainder of the description, identical elements or with an identical function bear the same reference sign. For the sake of brevity of the present description, these elements are not described in detail in each embodiment. On the contrary, only the differences between the variant embodiments are described in detail.
[0035] La figure 1 illustre de manière schématique la partie avant d’un véhicule automobile 10 à moteur 12. Le véhicule 10 comporte notamment une carrosserie 14 et un pare-chocs 16 portés par un châssis (non représenté) du véhicule automobile 10. La carrosserie 14 définit une baie de refroidissement 18, c'est-à-dire une ouverture à travers la carrosserie 14. La baie de refroidissement 18 peut être unique comme dans l’exemple illustré. Alternativement cependant, la carrosserie 14 peut définir une pluralité de baies de refroidissement. Ici, la baie de refroidissement 18 se trouve en partie basse de la face avant 14a de la carrosserie 14. Dans l’exemple illustré, la baie de refroidissement 18 est située sous le pare-chocs 16. Une grille 20 peut être disposée dans la baie de refroidissement 18 pour éviter que des projectiles puissent traverser la baie de refroidissement 18. Un module de refroidissement 22 est disposé en vis-à-vis de la baie de refroidissement 18. La grille 20 permet notamment de protéger ce module de refroidissement 22. [0035] FIG. 1 schematically illustrates the front part of a motor vehicle 10 with a motor 12. The vehicle 10 comprises in particular a body 14 and a bumper 16 carried by a frame (not shown) of the motor vehicle 10. The body 14 defines a cooling bay 18, that is to say an opening through the body 14. The cooling bay 18 can be unique as in the example illustrated. Alternatively, however, the body 14 can define a plurality of cooling bays. Here, the cooling bay 18 is located in the lower part of the front face 14a of the body 14. In the example illustrated, the cooling bay 18 is located under the bumper 16. A grid 20 can be arranged in the cooling bay 18 to prevent projectiles from passing through the cooling bay 18. A cooling module 22 is placed opposite the cooling bay 18. The grid 20 makes it possible in particular to protect this cooling module 22.
[0036] Sur les figures, on a illustré des repères (X, Y, Z). La direction X correspond à une direction, longitudinale, d’avancement du véhicule automobile. La direction Y, transversale, est définie comme étant perpendiculaire à la direction longitudinale X. Plus spécifiquement, les directions longitudinale et transversale X et Y sont peuvent par exemple appartenir sensiblement à un plan sensiblement horizontal. La direction Z correspond quant à elle à une direction verticale. In the figures, there are illustrated marks (X, Y, Z). The X direction corresponds to a longitudinal direction of travel of the motor vehicle. The direction Y, transverse, is defined as being perpendicular to the longitudinal direction X. More specifically, the longitudinal and transverse directions X and Y may for example belong substantially to a substantially horizontal plane. The Z direction corresponds in turn to a vertical direction.
[0037] Le module de refroidissement 22 est plus visible sur les figures 2 et 3. The cooling module 22 is more visible in Figures 2 and 3.
[0038] Le module de refroidissement 22 comprend un dispositif de ventilation 24 associé à au moins un échangeur thermique 26. The cooling module 22 comprises a ventilation device 24 associated with at least one heat exchanger 26.
[0039] Sur les figures 2 et 3, le module 22 comprend un seul échangeur thermique 26. L’échangeur illustré 26 présente une forme générale parallélépipédique, dont une longueur L s’étend parallèlement à l’axe Y, une profondeur P s’étend parallèlement à l’axe X et une hauteur H s’étend parallèlement à l’axe Z. [0040] Sur les figures 2 et 3, l’échangeur thermique 26 délimite une surface S, appelée surface de travail, dont une section est sensiblement rectangulaire dans un plan (Y, Z). In Figures 2 and 3, the module 22 comprises a single heat exchanger 26. The illustrated exchanger 26 has a generally parallelepipedal shape, a length L extending parallel to the Y axis, a depth P s' extends parallel to the X axis and a height H extends parallel to the Z axis. In Figures 2 and 3, the heat exchanger 26 defines a surface S, called work surface, a section of which is substantially rectangular in a plane (Y, Z).
[0041] La surface S est délimitée par deux côtés opposés 11 , I2 correspondant à la longueur de l’échangeur 26 et par deux autres côtés opposés h1 , h2, correspondant à la hauteur de l’échangeur 26. The surface S is delimited by two opposite sides 11, I2 corresponding to the length of the exchanger 26 and by two other opposite sides h1, h2, corresponding to the height of the exchanger 26.
[0042] On note que l’invention n’est pas limitée à un unique échangeur et le module peut comprendre une pluralité d’échangeurs, de même dimensions ou de dimensions différentes, selon les besoins du véhicule. En d’autres termes, il est possible de juxtaposer plusieurs échangeurs verticalement et/ou horizontalement, auquel cas la hauteur de la surface S est la somme des hauteurs des échangeurs juxtaposés verticalement (superposés), et la longueur de la surface S est la somme des longueurs des échangeurs juxtaposés horizontalement. [0042] It is noted that the invention is not limited to a single exchanger and the module can include a plurality of exchangers, of the same dimensions or of different dimensions, depending on the needs of the vehicle. In other words, it is possible to juxtapose several exchangers vertically and / or horizontally, in which case the height of the surface S is the sum of the heights of the vertically juxtaposed (superimposed) exchangers, and the length of the surface S is the sum lengths of horizontally juxtaposed exchangers.
[0043] Comme il ressort des figures 2 et 3, l’échangeur thermique 26 est muni de deux boîtes à eau opposées, 28-1 , 28-2, s’étendant le long de la hauteur de l’échangeur 26, de part et d’autre de la longueur L. Les boîtes à eau assurent l’alimentation en liquide réfrigérant de l’échangeur thermique 26. As is apparent from Figures 2 and 3, the heat exchanger 26 is provided with two opposite water boxes, 28-1, 28-2, extending along the height of the exchanger 26, on the part on both sides of length L. The water boxes ensure the supply of coolant to the heat exchanger 26.
[0044] Comme également illustré, le dispositif de ventilation 24 comprend au moins un ventilateur tangentiel, ou plus généralement une turbomachine tangentielle, qui aspire un flux d’air au contact du ou des échangeurs de chaleur 26. Sur l’exemple illustré, le module de refroidissement 24 comprend deux turbomachines tangentielles 30-1 , 30-2 montées aspirantes, les flux d’air associés étant notés respectivement F1 et F2. As also illustrated, the ventilation device 24 comprises at least one tangential fan, or more generally a tangential turbomachine, which draws an air flow in contact with the heat exchanger (s) 26. In the example illustrated, the cooling module 24 comprises two tangential turbomachines 30-1, 30-2 mounted suction, the associated air flows being denoted respectively F1 and F2.
[0045] Chacune des turbomachines tangentielles 30-1 , 30-2 comprend une roue à aubes 32-1 , 32-2, visible sur la figure 3. Chaque roue à aubes 32-1 , 32-2 comprend une pluralité de pales 34-1 , 34-2 montées rotatives autour d’un arbre 36-1 , 36-2. Each of the tangential turbomachines 30-1, 30-2 comprises a paddle wheel 32-1, 32-2, visible in Figure 3. Each paddle wheel 32-1, 32-2 comprises a plurality of blades 34 -1, 34-2 rotatably mounted around a shaft 36-1, 36-2.
[0046] Sur le mode de réalisation illustré, les arbres 36-1 , 36-2 s’étendent parallèlement à l’axe transversal Y. In the illustrated embodiment, the shafts 36-1, 36-2 extend parallel to the transverse axis Y.
[0047] Comme il ressort de la figure 3, chacune des turbomachines tangentielles peut être constituée en deux parties P1 , P2, les pales 34-1 , 34-2 étant réparties sur les deux parties de sorte que les deux parties sont soient identiques (c’est le cas de la figure 3) ou au contraire différentes. Un moteur M est placé entre les deux parties pour entraîner les pales en rotation. As emerges from Figure 3, each of the tangential turbomachines can be made up of two parts P1, P2, the blades 34-1, 34-2 being distributed over the two parts so that the two parts are identical ( this is the case of Figure 3) or on the contrary different. A motor M is placed between the two parts to drive the blades in rotation.
[0048] Tel qu’illustré, le module de refroidissement 22 comprend également une volute 38-1 , 38-2 associée respectivement à la roue à aubes 32-1 , 32-2. As illustrated, the cooling module 22 also comprises a volute 38-1, 38-2 associated respectively with the impeller 32-1, 32-2.
[0049] La volute 38-1 de la première turbomachine 30-1 comprend une enveloppe 40-1 constituée d’une paroi 42-1 conformée pour loger la roue à aubes 32-1 et guider l’air ayant traversé l’échangeur 26 autour de la première turbomachine 30-1 jusqu’à une première sortie 44-1 de l’air hors du module 22. De manière connue, la paroi est en forme de spirale tronquée. The volute 38-1 of the first turbomachine 30-1 comprises a casing 40-1 consisting of a wall 42-1 shaped to house the impeller 32-1 and guide the air having passed through the exchanger 26 around the first turbomachine 30-1 to a first outlet 44-1 of the air outside the module 22. In known manner, the wall is in the form of a truncated spiral.
[0050] De manière analogue, la volute 38-2 de la première turbomachine 30-2 comprend une enveloppe 40-2 constituée d’une paroi conformée 42-2 pour loger la roue à aubes 32-2 et guider l’air ayant traversé l’échangeur 26 autour de la première turbomachine 30-2 jusqu’à une première sortie 44-2 de l’air hors du module 22. De manière connue, la paroi est en forme de spirale tronquée. Similarly, the volute 38-2 of the first turbomachine 30-2 comprises a casing 40-2 consisting of a shaped wall 42-2 to house the impeller 32-2 and guide the air having passed through the exchanger 26 around the first turbomachine 30-2 up to a first outlet 44-2 of the air outside the module 22. In known manner, the wall is in the form of a truncated spiral.
[0051] Comme on le constate sur la figure 2, les volutes 38-1 , 38-2 sont disposées symétriquement par rapport à une médiatrice des bords h1 , h2. As can be seen in Figure 2, the volutes 38-1, 38-2 are arranged symmetrically with respect to a perpendicular bisector of the edges h1, h2.
[0052] La paroi 42-1 (respectivement 42-2) s’étend le long de l’axe X entre deux extrémités 46-1 , 48-2 (respectivement 46-2, 48-2) et délimite un espace creux E de réception de la roue à aubes entre ces deux extrémités 46-1 , 48-1 (respectivement 46-2, 48-2). The wall 42-1 (respectively 42-2) extends along the axis X between two ends 46-1, 48-2 (respectively 46-2, 48-2) and defines a hollow space E for receiving the paddle wheel between these two ends 46-1, 48-1 (respectively 46-2, 48-2).
[0053] Comme plus particulièrement visible sur la figure 3, le module de refroidissement 22 comprend au moins un support. Sur le mode de réalisation illustré, le module de refroidissement 22 comprend deux supports 50-1 , 50-2, maintenant détaillés. As more particularly visible in Figure 3, the cooling module 22 comprises at least one support. In the illustrated embodiment, the cooling module 22 comprises two supports 50-1, 50-2, now detailed.
[0054] Chaque support 50-1 , 50-2 comprend une partie 52-1 , 52-2 de solidarisation de l’échangeur thermique 26 et de la boîte à eau 28-1 , 28-2. La partie 52-1 , 52-2 présente une forme générale de cordon rectangulaire 54-1 , 54-2, délimitant une ouverture 56-1 , 56-2. Le bord h1 , h2 de l’échangeur thermique 26 est inséré dans l’ouverture 56-1 , 56-2 tandis que la boîte à eau 28-1 , 28-2 est avantageusement fixée sur le cordon 54-1 , 54-2. [0055] Le support 50-1 comprend également une partie d’obturation 58-1 de l’extrémité 46-1 de la paroi 42-1 délimitant la volute 40-1 , et une partie d’obturation 60-1 de l’extrémité 46-2 de la paroi 44-2 délimitant la volute 42-2. Chacune des parties 58-1 , 60-1 est munie d’un orifice O de passage de l’arbre de la roue à aubes. Each support 50-1, 50-2 comprises a part 52-1, 52-2 for securing the heat exchanger 26 and the water box 28-1, 28-2. The part 52-1, 52-2 has the general shape of a rectangular bead 54-1, 54-2, delimiting an opening 56-1, 56-2. The edge h1, h2 of the heat exchanger 26 is inserted into the opening 56-1, 56-2 while the water box 28-1, 28-2 is advantageously fixed on the cord 54-1, 54-2 . The support 50-1 also comprises a closing part 58-1 of the end 46-1 of the wall 42-1 delimiting the volute 40-1, and a sealing part 60-1 of the end 46-2 of the wall 44-2 delimiting the volute 42-2. Each of the parts 58-1, 60-1 is provided with an orifice O for the passage of the shaft of the paddle wheel.
[0056] De manière analogue, le support 50-2 comprend une partie d’obturation 58- 2 de l’extrémité 48-1 de la paroi 42-1 , et une partie d’obturation 60-2 de l’extrémité 48-2 de la paroi 42-2. Chacune des parties 58-2, 60-2 est munie d’un orifice O de passage de l’arbre de la roue à aubes. Similarly, the support 50-2 comprises a closing part 58-2 of the end 48-1 of the wall 42-1, and a sealing part 60-2 of the end 48- 2 of wall 42-2. Each of the parts 58-2, 60-2 is provided with an orifice O for passing through the shaft of the paddle wheel.
[0057] Le support 50-1 comprend une partie 62-1 de réception de volets V qui seront décrits ultérieurement. La partie 62-1 présente une forme plane, délimitée d’une part par un bord rectiligne 64-1 solidaire d’un bord du cordon rectangulaire 54-1 , s’étendant parallèlement à l’axe Z, et d’autre part par deux bords inclinés 66-The support 50-1 comprises a part 62-1 for receiving shutters V which will be described later. Part 62-1 has a planar shape, delimited on the one hand by a rectilinear edge 64-1 integral with an edge of the rectangular bead 54-1, extending parallel to the Z axis, and on the other hand by two inclined edges 66-
1 , 68-1 s’étendant respectivement depuis la partie d’obturation 58-1 , 60-1 en convergeant l’un vers l’autre au niveau du milieu du bord rectiligne 64-1 dans un sens de rétrécissement de la surface de la partie 62-1 . En d’autres termes, les bords 64-1 , 66-1 , et 68-2 dessinent deux trapèzes symétriques par rapport à un axe parallèle à l’axe Y passant par le milieu du bord 64-1 . 1, 68-1 respectively extending from the shutter portion 58-1, 60-1 converging towards each other at the middle of the straight edge 64-1 in a direction of narrowing of the surface of part 62-1. In other words, edges 64-1, 66-1, and 68-2 draw two trapezoids symmetrical about an axis parallel to the Y axis passing through the middle of edge 64-1.
[0058] Le support 50-2 comprend une partie 62-2 de réception de volets V qui seront décrits ultérieurement. La partie 62-2 présente une forme plane, délimitée d’une part par un bord rectiligne 64-2 solidaire d’un bord du cordon rectangulaire 54-2, s’étendant parallèlement à l’axe Z, et d’autre part par deux bords inclinés 66-The support 50-2 comprises a part 62-2 for receiving shutters V which will be described later. The part 62-2 has a planar shape, delimited on the one hand by a rectilinear edge 64-2 integral with an edge of the rectangular bead 54-2, extending parallel to the Z axis, and on the other hand by two inclined edges 66-
2, 68-2 s’étendant respectivement depuis la partie d’obturation 58-2, 60-2 en convergeant l’un vers l’autre au niveau du milieu du bord rectiligne 64-2 dans un sens de rétrécissement de la surface de la partie 62-2. En d’autres termes, les bords 64-2, 66-2, et 68-2 dessinent deux trapèzes symétriquement par rapport à un axe parallèle à l’axe Y passant par le milieu du bord 64-2. 2, 68-2 respectively extending from the shutter portion 58-2, 60-2 converging towards each other at the middle of the straight edge 64-2 in a direction of narrowing of the surface of part 62-2. In other words, edges 64-2, 66-2, and 68-2 draw two trapezoids symmetrically about an axis parallel to the Y axis passing through the middle of edge 64-2.
[0059] Les supports 50-1 , 50-2 sont des pièces multifonctions, puisqu’ils assurent la fixation de l’échangeur thermique 26, des boîtes à eau 28-1 , 28-2, des arbres des roues à aubes, voire de surcroît la fixation des parois des volutes. Cette multifonction permet un procédé de fabrication simplifié, comme il va être détaillé ultérieurement, ainsi qu’un renforcement de la tenue mécanique du module de refroidissement 22 et une plus grande compacité du module 22. [0060] Comme déjà évoqué, le module de refroidissement 22 comprend un ensemble de volets V mobiles entre une position de fermeture complète de la surface de travail S et une position d’ouverture de la surface S. Ces volets V peuvent être passifs, auquel cas le mouvement entre les positions d’ouverture et de fermeture est dû à la vitesse de l’air traversant le module 22, ou actifs, auquel cas le mouvement entre les positions d’ouverture et de fermeture est commandé par un actionneur. The supports 50-1, 50-2 are multifunction parts, since they ensure the fixing of the heat exchanger 26, the water boxes 28-1, 28-2, the shafts of the paddle wheels, or even in addition the fixing of the walls of the volutes. This multifunction allows a simplified manufacturing process, as will be detailed later, as well as a strengthening of the mechanical strength of the cooling module 22 and greater compactness of the module 22. As already mentioned, the cooling module 22 comprises a set of flaps V movable between a fully closed position of the work surface S and an open position of the surface S. These flaps V can be passive, to which case the movement between the open and closed positions is due to the speed of the air passing through the module 22, or active, in which case the movement between the open and closed positions is controlled by an actuator.
[0061] Dans la position de fermeture des volets, ceux-ci permettent de diriger le flux d’air créé vers la turbomachine associée. Au contraire, une position ouverte des volets, atteinte généralement alors que la turbomachine associée est éteinte, permet de diriger au moins une partie du flux d’air créé par exemple par la vitesse du véhicule sur lequel le module de refroidissement 22 est monté, sans passer par la turbomachine associée 28-1 , 28-2. On dérive ainsi le flux d’air de la turbomachine. La position d’ouverture est particulièrement avantageuse quand le véhicule roule à grande vitesse, auquel cas il est possible de mettre les turbomachines à l’arrêt. In the closed position of the flaps, they make it possible to direct the flow of air created towards the associated turbomachine. On the contrary, an open position of the flaps, generally reached while the associated turbomachine is off, makes it possible to direct at least part of the air flow created for example by the speed of the vehicle on which the cooling module 22 is mounted, without pass through the associated turbomachine 28-1, 28-2. This derives the air flow from the turbomachine. The open position is particularly advantageous when the vehicle is traveling at high speed, in which case it is possible to shut down the turbomachines.
[0062] Sur le mode de réalisation illustré, l’ensemble des volets est disposé en aval par rapport à l’échangeur thermique 26 relativement à un sens d’écoulement des flux d’air F1 , F2 traversant le module de refroidissement 22. Néanmoins, l’invention n’est pas limitée à cette configuration et on peut positionner les volets en amont de l’échangeur 26, ou bien prévoir un ensemble de volets en amont et un ensemble de volets en aval de l’échangeur thermique 26. In the illustrated embodiment, all of the flaps are arranged downstream with respect to the heat exchanger 26 relative to a direction of flow of the air flows F1, F2 passing through the cooling module 22. Nevertheless , the invention is not limited to this configuration and it is possible to position the flaps upstream of the exchanger 26, or else to provide a set of flaps upstream and a set of flaps downstream of the heat exchanger 26.
[0063] On note que, avantageusement, l’échangeur thermique 26, les boîtes à eau 28-1 , 28-2, les supports 50-1 , 50-2, voire les parois 42-1 , 42-2 sont en aluminium. It is noted that, advantageously, the heat exchanger 26, the water boxes 28-1, 28-2, the supports 50-1, 50-2, or even the walls 42-1, 42-2 are made of aluminum .
[0064] L’invention a également pour objet un procédé de fabrication du module 22, comprenant une étape de brasage d’au moins l’échangeur thermique 26, et des supports 50-1 , 50-2. Le procédé comprend également une étape de fixation des boîtes à eau, éventuellement au cours de l’étape de brasage, ainsi qu’une étape de fixation des arbres aux supports 50-1 , 50-2. Chaque volute est rapportée ou brasée sur le support 50-1 , 50-2. [0064] The subject of the invention is also a method for manufacturing the module 22, comprising a step of brazing at least the heat exchanger 26, and supports 50-1, 50-2. The method also includes a step of fixing the water boxes, optionally during the brazing step, as well as a step of fixing the shafts to the supports 50-1, 50-2. Each volute is attached or brazed on the support 50-1, 50-2.
[0065] Ainsi, comme on le constate, le procédé de fabrication 22 est particulièrement simplifié grâce au brasage des éléments constitutifs du module 22. [0066] L’invention ne se limite pas au seul exemple décrit ci-avant. Au contraire, l’invention est susceptible de nombreuses variantes accessibles à l’homme de l’art. Thus, as can be seen, the manufacturing process 22 is particularly simplified thanks to the brazing of the constituent elements of the module 22. The invention is not limited to the single example described above. On the contrary, the invention is capable of numerous variants accessible to those skilled in the art.
[0067] Notamment, dans l’exemple illustré, le dispositif de ventilation comporte deux turbomachines. Alternativement, le dispositif de ventilation peut comporter une seule turbomachine ou plus de deux turbomachines. In particular, in the example illustrated, the ventilation device comprises two turbomachines. Alternatively, the ventilation device may include a single turbomachine or more than two turbomachines.
[0068] Également, dans l’exemple illustré, les volets pivotent autour d’un axe parallèle à l’axe de rotation des turbomachines. Alternativement, cependant, le ou les volets peut/peuvent pivoter autour d’un axe perpendiculaire à l’axe de rotation de la ou des turbomachines. [0068] Also, in the example illustrated, the flaps pivot about an axis parallel to the axis of rotation of the turbomachines. Alternatively, however, the flap (s) may / may pivot about an axis perpendicular to the axis of rotation of the turbine engine (s).

Claims

Revendications Claims
[Revendication 1] Module de refroidissement pour véhicule automobile, comprenant : [Claim 1] Cooling module for a motor vehicle, comprising:
- au moins une turbomachine tangentielle (30-1 , 30-2) comprenant une roue à aubes (32-1 , 32-2) munie de pales (34-1 , 34-2) montées mobiles autour d’un arbre (36-1 , 36-2), - at least one tangential turbomachine (30-1, 30-2) comprising a paddle wheel (32-1, 32-2) provided with blades (34-1, 34-2) mounted to move around a shaft (36 -1, 36-2),
- au moins un échangeur thermique (26), - at least one heat exchanger (26),
- au moins un support (50-1 , 50-2), présentant une ouverture (56-1 , 56-2) recevant l’échangeur thermique (26), et sur lequel sont fixés au moins une boîte à eau (28-1 , 28-2) associée à l’échangeur thermique (26) et l’arbre (36-1 , 36-2) de la roue à aubes (32-1 , 32-2). - at least one support (50-1, 50-2), having an opening (56-1, 56-2) receiving the heat exchanger (26), and on which are fixed at least one water box (28- 1, 28-2) associated with the heat exchanger (26) and the shaft (36-1, 36-2) of the paddle wheel (32-1, 32-2).
[Revendication 2] Module de refroidissement selon la revendication 1 , comprenant deux turbomachines tangentielles (30-1 , 30-2) comprenant chacune une roue à aubes (32-1 , 32-2) munie de pales (34-1 , 34-2) montées mobiles autour d’un arbre (36-1 , 36-2), chacun desdits arbres (36-1 , 36-2) étant fixé sur ledit au moins un support (50-1 , 50-2). [Claim 2] Cooling module according to claim 1, comprising two tangential turbomachines (30-1, 30-2) each comprising a paddle wheel (32-1, 32-2) provided with blades (34-1, 34- 2) movably mounted around a shaft (36-1, 36-2), each of said shafts (36-1, 36-2) being fixed on said at least one support (50-1, 50-2).
[Revendication 3] Module de refroidissement selon l’une des revendications 1 ou 2, comprenant une volute (38-1 , 38-2) associée à chaque turbomachine tangentielle (30-1 , 30-2), chacune des volutes (38-1 , 38-2) comprenant une enveloppe (40-1 , 40-2) s’étendant entre deux extrémités (46-1 , 48-1 ; 46-2, 48-2) et délimitant un espace creux (E) de réception de la roue à aubes (32-1 , 32-2), le support (50-1 , 50- 2) comprenant une partie d’obturation (58-1 , 60-1 ; 58-2, 60-2) de l’une des extrémités de l’enveloppe (40-1 , 40-2). [Claim 3] Cooling module according to one of claims 1 or 2, comprising a volute (38-1, 38-2) associated with each tangential turbomachine (30-1, 30-2), each of the volutes (38- 1, 38-2) comprising an envelope (40-1, 40-2) extending between two ends (46-1, 48-1; 46-2, 48-2) and delimiting a hollow space (E) of receiving the impeller (32-1, 32-2), the support (50-1, 50- 2) comprising a shutter part (58-1, 60-1; 58-2, 60-2) of one of the ends of the casing (40-1, 40-2).
[Revendication 4] Module de refroidissement selon la revendication précédente, dans lequel la partie d’obturation (58-1 , 60-1 ; 58-2, 60-2) comprend un orifice (O) de passage de l’arbre (36-1 , 36-2) de chacune des roues à aubes (32-1 , 32-2). [Claim 4] A cooling module according to the preceding claim, in which the closure part (58-1, 60-1; 58-2, 60-2) comprises an orifice (O) for the passage of the shaft (36 -1, 36-2) of each of the paddle wheels (32-1, 32-2).
[Revendication 5] Module de refroidissement selon l’une des revendications précédentes, dans lequel ladite au moins une boîte à eau (28-1 , 28-2) est montée solidaire d’une partie (52-1 , 52-2) du support (50-1 , 50-2) comprenant l’ouverture (56-1 , 56-2) recevant l’échangeur thermique (26). [Claim 5] Cooling module according to one of the preceding claims, wherein said at least one water box (28-1, 28-2) is mounted integral with a part (52-1, 52-2) of the support (50-1, 50-2) comprising the opening (56-1, 56-2) receiving the heat exchanger (26).
[Revendication 6] Module de refroidissement selon l’une des revendications précédentes, comprenant un ensemble de volets (V) mobiles entre une position de fermeture du module de refroidissement et une position d’ouverture du mobile de refroidissement, ledit ensemble de volets (V) étant disposé en amont et/ou en aval dudit au moins un échangeur thermique (26) relativement à un sens d’écoulement d’un flux d’air (F1 , F2) dans le module de refroidissement (22). [Claim 6] cooling module according to one of the preceding claims, comprising a set of flaps (V) movable between a closed position of the cooling module and an open position of the cooling mobile, said set of flaps (V ) being arranged upstream and / or downstream of said at least one heat exchanger (26) relative to a direction of flow of an air flow (F1, F2) in the cooling module (22).
[Revendication 7] Module de refroidissement selon l’une des revendications précédentes, dans lequel les volets (V) sont passifs ou montés pilotés par un moyen de commande. [Claim 7] Cooling module according to one of the preceding claims, in which the flaps (V) are passive or mounted controlled by a control means.
[Revendication 8] Procédé de fabrication d’un module de refroidissement pour véhicule automobile, comprenant : [Claim 8] A method of manufacturing a cooling module for a motor vehicle, comprising:
- une étape de brasage d’au moins un échangeur thermique (26) et d’au moins un support (50) présentant une ouverture (56-1 , 56-2) recevant l’échangeur thermique (26), - a step of brazing at least one heat exchanger (26) and at least one support (50) having an opening (56-1, 56-2) receiving the heat exchanger (26),
- une étape de fixation d’une boîte à eau (28-1 , 28-2) associée à l’échangeur thermique (26) audit au moins un support (50-1 , 50-2), et - a step of fixing a water box (28-1, 28-2) associated with the heat exchanger (26) to said at least one support (50-1, 50-2), and
- une étape de fixation audit au moins un support (50-1 , 50-2) d’un arbre (36-1 , 36- 2) d’au moins une turbomachine tangentielle (30-1 , 30-2) comprenant une roue à aubes (32-1 , 32-2) munie de pales (34-1 , 34-2) montées mobiles autour dudit arbre (36-1 , 36-2). - a step of fixing to said at least one support (50-1, 50-2) of a shaft (36-1, 36- 2) of at least one tangential turbomachine (30-1, 30-2) comprising a paddle wheel (32-1, 32-2) provided with blades (34-1, 34-2) movably mounted around said shaft (36-1, 36-2).
[Revendication 9] Procédé de fabrication selon la revendication précédente, comprenant une étape de fixation d’une volute associée à chaque turbomachine tangentielle, chacune des volutes comprenant une enveloppe s’étendant entre deux extrémités et délimitant un espace creux de réception de la roue à aubes, le support comprenant une partie d’obturation de l’une des extrémités de l’enveloppe. [Claim 9] The manufacturing method according to the preceding claim, comprising a step of fixing a volute associated with each tangential turbomachine, each of the volutes comprising a casing extending between two ends and delimiting a hollow space for receiving the impeller. blades, the support comprising a part for closing off one of the ends of the casing.
[Revendication 10] Procédé de fabrication selon la revendication précédente, dans lequel l’étape de fixation d’une volute associée à chaque turbomachine est une étape de brasage de la volute. [Claim 10] The manufacturing method according to the preceding claim, in which the step of fixing a volute associated with each turbomachine is a step of brazing the volute.
PCT/FR2020/052317 2019-12-20 2020-12-07 Cooling module for motor vehicle with tangential-flow turbomachine WO2021123557A1 (en)

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FRFR1915195 2019-12-20
FR1915195A FR3105110B1 (en) 2019-12-20 2019-12-20 TANGENTIAL TURBOMACHINE AUTOMOTIVE VEHICLE COOLING MODULE

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490132A (en) * 1974-01-28 1977-10-26 Int Harvester Co Internal combustion engine and cooling system
EP1142742A1 (en) * 1999-10-28 2001-10-10 Denso Corporation Vehicle-mounted structure of heat exchanger
US20030230397A1 (en) * 2002-06-13 2003-12-18 Southwick David A. Plastic attachment bracket for metal heat exchanger tank
US20050023057A1 (en) * 2003-07-24 2005-02-03 Akihiro Maeda Vehicle front end structure
DE102017203858A1 (en) * 2017-03-09 2018-09-13 Bayerische Motoren Werke Aktiengesellschaft Cooling device for a motor vehicle, fan cowl and an internal combustion engine having the cooling device
WO2019186076A1 (en) * 2018-03-28 2019-10-03 Valeo Systemes Thermiques Ventilation device for a motor vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490132A (en) * 1974-01-28 1977-10-26 Int Harvester Co Internal combustion engine and cooling system
EP1142742A1 (en) * 1999-10-28 2001-10-10 Denso Corporation Vehicle-mounted structure of heat exchanger
US20030230397A1 (en) * 2002-06-13 2003-12-18 Southwick David A. Plastic attachment bracket for metal heat exchanger tank
US20050023057A1 (en) * 2003-07-24 2005-02-03 Akihiro Maeda Vehicle front end structure
DE102017203858A1 (en) * 2017-03-09 2018-09-13 Bayerische Motoren Werke Aktiengesellschaft Cooling device for a motor vehicle, fan cowl and an internal combustion engine having the cooling device
WO2019186076A1 (en) * 2018-03-28 2019-10-03 Valeo Systemes Thermiques Ventilation device for a motor vehicle

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FR3105110B1 (en) 2022-01-14

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