EP4623260A1 - Echangeur de chaleur pour vehicule automobile - Google Patents
Echangeur de chaleur pour vehicule automobileInfo
- Publication number
- EP4623260A1 EP4623260A1 EP23804723.7A EP23804723A EP4623260A1 EP 4623260 A1 EP4623260 A1 EP 4623260A1 EP 23804723 A EP23804723 A EP 23804723A EP 4623260 A1 EP4623260 A1 EP 4623260A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- bundle
- heat exchanger
- branch
- heat exchange
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0435—Combination of units extending one behind the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0452—Combination of units extending one behind the other with units extending one beside or one above the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
Definitions
- the present invention relates to the field of heat exchangers, in particular heat exchangers for motor vehicles.
- Such exchangers can equip a thermal conditioning system fitted to a motor vehicle.
- a thermal conditioning system makes it possible to ensure thermal regulation of various components of the vehicle, such as the passenger compartment or an electrical energy storage battery, when the vehicle is electrically powered.
- Heat exchanges are managed mainly by the compression and expansion of a refrigerant fluid circulating in a circuit in which several heat exchangers are arranged.
- a compressor allows the refrigerant fluid to pass at high pressure and circulate it in the circuit.
- the refrigerant fluid circuit usually includes a first heat exchanger ensuring the condensation of the high-pressure refrigerant fluid discharged by the compressor, or its cooling in the case of a fluid in a supercritical state.
- the refrigerant fluid circulating in this first exchanger transfers heat to a flow of air passing through the heat exchanger.
- a heat transfer liquid receives heat from the traction chain element, and dissipates heat, for example in an air flow, at the level of a second heat exchanger.
- the present invention aims to propose a solution that is easier to integrate because it is more compact and provides improved thermodynamic performance.
- the first branch of the tubes is, for the circulation of the air flow, upstream of the second heat exchange section, which is itself upstream of the second branch of the tubes of the first exchange section thermal.
- Each tube, or portion of a tube thus receives a flow of air having a temperature adapted to the temperature of the fluid circulating inside.
- the first branch of the first heat exchange section receives a flow of fresh ambient air which has not been heated by its passage through a heat exchanger, which increases its efficiency.
- the air flow leaving the first branch of the first heat exchange section has a sufficiently low temperature to guarantee good exchange efficiency with the second heat exchange section.
- the first heat exchange section functions as a condenser of the refrigerant fluid.
- the refrigerant fluid circulating in the first heat exchange section receives heat from the air flow.
- the air flow is an air flow external to the vehicle.
- the refrigerant fluid can be a chemical fluid, such as R1234yf, or R134a.
- each tube of the first tube bundle extends in a plane.
- the tubes of the first bundle of tubes are aligned in a direction perpendicular to the plane of the tubes.
- the second bundle of tubes extends between two parallel planes, these two planes being perpendicular to the plane of the tubes of the first bundle.
- the fins improve the heat transfer between the air flow and the refrigerant circulating in the tubes of the first heat exchange section.
- the fins have slots for the air flow to pass through.
- the base of a tube of the first tube bundle is spaced from the base of a consecutive tube.
- the outer periphery of the tubes of the first bundle of tubes has an oblong cross section.
- the tubes of the first bundle of tubes can be twisted near a junction between the first branch and the base.
- the base of the tubes of the first tube bundle defines a lower side of the heat exchanger when the heat exchanger is in the nominal installation position in the vehicle.
- the base of the tubes of the first bundle defines a lateral side of the heat exchanger when the heat exchanger is in the nominal installation position in the vehicle.
- the first branch of the tubes of the first bundle of tubes extends along a horizontal axis when the heat exchanger is in the nominal installation position in the vehicle .
- This configuration makes it possible to avoid possible corrosion of the lowest part of the heat exchanger under the action of accumulated humidity.
- this configuration makes it possible to limit the number of tubes necessary when the heat exchanger has a low height and a large width.
- height we mean the dimension along the vertical axis and width the dimension along the transverse axis of the vehicle when the exchanger is nominally installed in the vehicle. The manufacture of the exchanger is thus facilitated for applications in which the vehicle has a low front face.
- a first end of the tubes of the first bundle of tubes opens into a first distributor configured to distribute the refrigerant fluid between all of the tubes of the first bundle of tubes.
- the first distributor extends transversely to the axis of the tubes of the first bundle of tubes.
- the first distributor is cylindrical in shape.
- the first distributor includes a refrigerant fluid inlet.
- the first collector extends transversely to the axis of the tubes of the first bundle of tubes.
- the first collector includes a refrigerant outlet.
- the first collector and the first distributor extend in parallel directions.
- the tubes of the first tube bundle are identical.
- the first distributor is arranged downstream of the first collector in a direction of flow of the air flow when the heat exchanger is in the nominal position of installation in the vehicle.
- the first collector is arranged downstream of the first distributor in a direction of flow of the air flow when the heat exchanger is in nominal position d installation in the vehicle.
- the first branch of the tubes of the first bundle of tubes and the second branch of the tubes of the first bundle of tubes have the same length.
- the length of the first branch and the second branch of the tubes of the first bundle of tubes is for example between 300 millimeters and 600 millimeters.
- the length of the first branch of the tubes of the first bundle of tubes is for example between 100 millimeters and 300 millimeters.
- the length of the second branch of the tubes of the first bundle of tubes is for example between 300 millimeters and 600 millimeters.
- the tubes of the second bundle of tubes extend transversely to the tubes of the first bundle of tubes.
- the tubes of the second tube bundle are identical.
- a first end of the tubes of the second bundle of tubes opens into a second distributor configured to distribute the heat transfer liquid between all of the tubes of the second bundle of tubes.
- the second distributor extends transversely to the axis of the tubes of the second bundle of tubes.
- the second distributor includes a heat transfer liquid inlet.
- a second end of the tubes of the second bundle of tubes opens into a second collector configured to collect the heat transfer liquid coming from all of the tubes of the second bundle of tubes.
- the second collector extends transversely to the axis of the tubes of the second bundle of tubes.
- the second collector includes a heat transfer liquid outlet.
- the heat exchanger may include a support connecting the second heat exchange section to the base of the tubes of the first tube bundle.
- the support provides mechanical support for the bases of the tubes of the first heat exchange section relative to the second heat exchange section, which makes it possible to attenuate the propagation of vehicle vibrations in the tubes of the first heat exchange section.
- the support is for example made of plastic, in particular polyamide loaded with glass fibers (for example PA6 loaded with 30% glass fibers) or even polypropylene loaded with glass fibers (for example PP loaded with 30% of glass fibers.
- the support can secure the second heat exchange section with the base of the tubes of the first bundle of tubes.
- the second heat exchange section comprises a face arranged opposite the base of the tubes of the first bundle of tubes, and the support connects the base of the tubes of the first bundle of tubes with the face facing each other.
- the sealed wall prevents the air flow from circulating in the space between the base of the tubes of the first bundle and the face of the second heat exchange section, which is located opposite.
- the sealed wall thus prevents part of the air flow F from emerging from the exchanger without exchanging heat with the second heat exchange section.
- the small base of the trapezoid is opposite the second heat exchange section.
- the large base is opposite the base of the tubes of the first bundle of tubes.
- the support guides towards the second heat exchange section the air flow flowing near the base of the tubes of the first bundle of tubes.
- the water coming from the defrosting phases can also be guided towards the bottom of the exchanger, which promotes the evacuation of this water.
- the support provides mechanical support for the tubes in relation to each other, which limits the amplitude of vibrations.
- the mechanical robustness of the heat exchanger is improved.
- the support is for example overmolded on the base of the tubes of the first bundle of tubes.
- the face of the second heat exchange section can be secured to the base of the tubes of the first heat exchange section, in particular by brazing.
- This arrangement makes it possible to arrange the second collector or the second distributor opposite the base of the tubes of the first bundle of tubes.
- the base of the refrigerant tubes can thus be fixed to the second collector, or to the second distributor.
- the support allowing the second heat exchange section to be joined to the base of the tubes of the first bundle of tubes is not necessary.
- one of the distributor and the collector of the second tube bundle can be aligned with the refrigerant collector/distributor located upstream. The air flow passing through the heat exchanger is thus less disturbed, which improves its efficiency for a given size.
- FIG. 2 is a schematic front view of the heat exchanger of Figure 1,
- FIG. 3 is a schematic side view in section of a heat exchanger according to a second embodiment of the invention.
- FIG. 4 is a schematic detail view, side and in section, of a variant of a heat exchanger according to the invention.
- FIG. 5 is a partial schematic perspective view of a heat exchanger according to the invention.
- FIG. 6 is a partial schematic view, from above, of three variants of a heat exchanger according to the invention,
- a first element upstream of a second element means that the first element is placed before the second element with respect to the direction of circulation, or travel, of a fluid.
- a first element downstream of a second element means that the first element is placed after the second element with respect to the direction of circulation, or travel, of the fluid considered.
- a second element is placed between a first element and a third element means that the shortest path to go from the first element to the third element passes through the second element.
- the second heat exchanger is for example arranged in the heating, ventilation and/or air conditioning installation of the vehicle, frequently referred to by the English term “HVAC”, for “Heating, Ventilating and Air Conditioning”.
- HVAC Heating, Ventilating and Air Conditioning
- the second heat exchanger thus allows the vehicle’s passenger compartment to be cooled.
- the second heat exchanger may be a cooling exchanger thermally coupled to an electrical energy storage battery. The second exchanger thus allows the battery to be cooled, particularly during rapid charging phases.
- the heat exchanger 50 can receive refrigerant fluid at low pressure and carry out the evaporation of the refrigerant fluid.
- the phases of heating or dehumidifying the air in the passenger compartment correspond to these modes of use.
- the heat transfer liquid circuit of the thermal conditioning system makes it possible to cool an element of the vehicle's electric traction chain.
- the element of the electric traction chain may comprise an electrical energy storage battery, or an electronic module for controlling an electric traction motor of the vehicle, or the engine itself.
- the heat transfer liquid thus receives heat from the element of the traction chain, and this heat is dissipated at the level of a second heat exchange section 2 of the exchanger 50.
- FIG. 1 shows a heat exchanger 50 according to a first embodiment.
- the heat exchanger 50 is for example a heat exchanger for a motor vehicle.
- the X axis corresponds to the longitudinal axis of the vehicle
- the Y axis corresponds to the transverse axis
- the Z axis corresponds to the vertical axis.
- the heat exchanger 50 for a motor vehicle comprises:
- the tubes 3 of the first bundle 11 of tubes have a U shape comprising a first branch 5 and a second branch 7 connected by a base 6.
- the first branch 5 is arranged upstream of the second branch 7 in a direction of flow of the air flow F
- the second bundle of tubes 12 is arranged between the first branch 5 and the second branch 7 of the tubes 3 of the first bundle of tubes 1 according to the direction of flow of the air flow F.
- the U shape of the tubes 3 of the first bundle 11 of tubes 3 makes it possible to increase the length participating in the heat exchanges of the first heat exchange section, while limiting the frontal surface of the exchanger 50. Furthermore, a portion of the tubes, forming the first branch 5, directly receives ambient air which has not been heated by another heat exchanger, which increases the efficiency of the heat exchange.
- the second heat exchange section 2 is arranged in the free volume formed by the spacing of the branches 5.7 of each of the U-shaped tubes 3 of the first bundle 1 1 of tubes. The presence of the second heat exchange section 2 does not modify the external volume of the heat exchanger 50.
- the heat exchanger 50 thus has a very compact and thermally optimized shape.
- the first branch 5 of the tubes 3 is arranged, with respect to the circulation of the air flow F, upstream of the second heat exchange section 2, which is itself arranged upstream of the second branch 7 of the tubes 3 of the first heat exchange section 1.
- Each tube, or portion of a tube thus receives a flow of air having a temperature adapted to the temperature of the fluid circulating inside this tube.
- the first branch 5 of the first heat exchange section 1 receives a flow of fresh ambient air which has not been heated by a passage through a heat exchanger, which increases its efficiency for heat exchange.
- the air flow leaving the first branch 5 of the first heat exchange section 1 has a sufficiently low temperature to guarantee good exchange efficiency with the fluid circulating in the second heat exchange section 2.
- the air flow heated by its passage in the second heat exchange section 2 still has a sufficiently low temperature to guarantee good exchange efficiency with the refrigerant fluid circulating in the second branch 7 of the first heat exchange section 1.
- the efficiency of the heat exchanger 50, for a given size, is thus optimized.
- the tubes of the first bundle 1 1 have a U shape that the tubes comprise a first rectilinear portion, called the first branch 5, fluidly connected to a second rectilinear portion, called the second branch 7, by a intermediate portion called base 6.
- the first branch 5 and the second branch 7 extend parallel to each other.
- the intermediate portion 6 extends transversely to the first branch 5 and to the second branch 7.
- the intermediate portion is here rectilinear.
- the first branch 5, the second branch 7 and the intermediate portion 6 are arranged in the same plane.
- the intermediate portion may have a curved shape.
- the second bundle of tubes 12 is arranged downstream of the first branch of the tubes 3 of the first bundle 11 and upstream of the second branch 7 of the tubes 3 of the first bundle 11.
- the refrigerant fluid circulating in the first heat exchange section 1 transfers heat to the air flow F.
- the exchanger 50 functions as a cooler of the refrigerant fluid, without condensation occurring. Such operation occurs for example when the refrigerant used is R744.
- the refrigerant fluid circulates from the second branch 7 of the tubes 3 towards the first branch 5 of the tubes 3.
- the hottest refrigerant fluid arrives in the first section heat exchanger 1 by the portion of the tubes placed furthest downstream according to the circulation of the air flow F.
- the first heat exchange section 1 functions as an evaporator of the refrigerant fluid.
- the refrigerant fluid circulating in the first heat exchange section 1 receives heat from the air flow F.
- This mode of operation corresponds for example to the heat pump mode.
- the refrigerant fluid circulates from the first branch 5 of the tubes 3 towards the second branch 7 of the tubes 3.
- the refrigerant fluid arrives in the first heat exchange section 1 via the portion of the tubes located furthest upstream according to the circulation of the air flow F.
- the direction of circulation of the refrigerant fluid is reversed depending on whether the exchanger 50 operates as a condenser or as an evaporator. This reversal of direction of circulation depending on the operating mode in which the heat exchanger is used is optional.
- the air flow F is an air flow external to the vehicle.
- the exchanger 50 is for example arranged on the front of the vehicle, behind the grille.
- the air flow F is an air flow inside the passenger compartment of the vehicle.
- the exchanger 50 is then placed in the heating, ventilation and/or air conditioning installation of the vehicle.
- the refrigerant fluid can be a chemical fluid, such as R1234yf, or R134a.
- the refrigerant can be R744 or R290.
- the heat transfer liquid circulates in parallel in the tubes 4 of the second bundle 12 of tubes.
- the heat transfer liquid can be a mixture of water and glycol.
- the tubes 3 of the first bundle 11 of tubes are arranged in parallel planes. In Figure 5, nine tubes 3 are shown. More generally, the first bundle 11 can include any number of tubes 3.
- the tubes 3 of the first bundle 11 of tubes are aligned in a direction D perpendicular to the plane of the tubes.
- the tubes 3 of the first bundle 1 1 can in particular be made of aluminum or copper.
- the tubes 4 of the second bundle 12 can for example be made of aluminum or copper.
- the second bundle 12 of tubes 4 extends between two parallel planes P2, P24, these two planes being perpendicular to the plane of the tubes 3 of the first bundle 1.
- the plane P2 is shown in Figure 6, which is a schematic top view of the heat exchanger 50.
- the heat exchanger 50 thus has a compact shape, the second heat exchange section 2 filling the space left free between all of the first branches 5 of the tubes 3 of the first heat exchange section
- the first branch 5 of a tube 3 of the first bundle 11 of tubes is connected to the first branch of a consecutive tube by a first set of fins 23.
- two neighboring tubes of the first bundle 11 of tubes are connected by a set of fins 23.
- I I of tubes is connected to the second branch of a consecutive tube by a second set of fins 24.
- the fins 23, 24 improve the heat transfer between the air flow F and the refrigerant fluid circulating in the tubes 3 of the first heat exchange section 1.
- the fins 23, 24 include slots 25 for the passage of the air flow F.
- the slots 25 improve the heat transfer between the air flow F and the fins 23, 24.
- the outer periphery of the tubes 3 of the first bundle 11 of tubes has a cross section of oblong shape.
- the tubes 3 of the first bundle 11 of tubes are for example microchannel tubes.
- each tube 3 comprises a plurality of parallel channels.
- the microchannel tubes are formed by extrusion and then shaped into the desired U-shape.
- the outer periphery of the tubes 3 of the first bundle 11 of tubes has a cross section of oblong shape, defining a major axis a and a minor axis b.
- the major axis a of the first branch 5 of the tubes is parallel to the air flow F.
- the major axis of the second branch 7 of the tubes 3 is also parallel to the air flow F.
- Figure 7 schematically details the shape exterior of the tubes 3. In this figure, the micro-channels have not been shown.
- the tubes 3 of the first bundle 11 of tubes can be twisted in the vicinity of a junction 35 between the first branch 5 and the base 6. Likewise, the tubes 3 of the first bundle 11 of tubes can be twisted at vicinity of a junction 36 between the base 6 and the second branch 7. In other words, the major axis a of a cross section of a tube 3 gradually rotates by 90° around the axis of extension D5 of the first branch 5 of a tube 3 in the junction zone 35 between the first branch 5 and the base 6. This deformation of the tube makes it possible to produce the U shape without excessively deforming the material of the tubes.
- the major axis a of the base 6 of the tubes 3 is perpendicular to the air flow F.
- the base 6 of the tubes 3 of the first bundle 11 of tubes defines a lower side of the heat exchanger 50 when the heat exchanger 50 is in nominal installation position in the vehicle.
- base 6 extends in a plane parallel to the plane X, Y.
- the different figures represent the exchanger 50 oriented in this way.
- the first branch 5 of the tubes 3 of the first bundle 11 of tubes extends along a vertical axis Z when the heat exchanger 50 is in the nominal installation position in the vehicle.
- This configuration is favorable for the evacuation of water coming from defrosting of the heat exchanger, when an ice deposit accumulated on the surface of the first heat exchange section melts. In fact, liquid water can flow along the tubes without encountering any obstacle that could create a reservoir.
- the first branch 5 of the tubes 3 of the first bundle 1 1 of tubes extends along a horizontal axis when the heat exchanger 50 is in the nominal installation position in the vehicle.
- This horizontal axis is for example the transverse axis Y of the vehicle.
- the base 6 of the tubes 3 of the first bundle 1 1 then defines a lateral side of the heat exchanger 50 when the heat exchanger 50 is in the nominal installation position in the vehicle.
- the base 6 then extends in a plane parallel to the plane Y, Z. This configuration is particularly suitable for applications in which the vehicle has a front face of low height and wide width.
- a first end 15 of the tubes 3 of the first bundle 11 of tubes opens into a first distributor 9 configured to distribute the refrigerant fluid between all of the tubes 3 of the first bundle 11 of tubes .
- the first distributor 9 extends transversely to the axis of the tubes 3 of the first bundle 11 of tubes.
- the tubes 3 are tightly linked to the first distributor 9 at their first end 15. Likewise, the tubes 3 are tightly linked to the first collector 10 at their second end 16. The tubes 3 are for example brazed to the first distributor 9 as well as to the first collector 10.
- the refrigerant inlet 13 and the refrigerant outlet 14 can be arranged relative to each other in different ways.
- Figure 6 schematically illustrates several possible configurations.
- the refrigerant fluid inlet 13 and the refrigerant fluid outlet 14 can be arranged on opposite side edges along the axis of the first distributor 9.
- the inlet 13 and the outlet 14 of refrigerant fluid are not defined intrinsically to the exchanger 50, but can change depending on the mode of circulation of the refrigerant fluid within the thermal conditioning system in which the exchanger is integrated. In other words, what corresponds to an inlet 13 of refrigerant fluid in one operating mode can become an outlet 14 of refrigerant fluid in another operating mode.
- the direction of circulation of the refrigerant fluid is imposed by a set of valves which can be selectively opened or closed. By controlling the different valves, the direction of circulation of the refrigerant fluid in the first heat exchange section 1 can be reversed. It is thus possible to modify the direction of circulation of the refrigerant fluid depending on the desired operating mode, for example as a condenser or evaporator.
- the first collector 10 is arranged downstream of the first distributor 9 in a direction of flow of the flow d air F when the heat exchanger 50 is in the nominal installation position in the vehicle.
- This configuration is preferably used when the heat exchanger 50 operates as an evaporator, in particular for heat pump mode.
- the refrigerant fluid inlet is on the side of the second branch 7 of the tubes 3, located furthest downstream in the direction of flow of the air flow.
- Figure 3 illustrates a second embodiment of the heat exchanger 50.
- the length L1 of the first branch 5 of the tubes 3 of the first bundle 1 1 of tubes is less than the length L2 of the second branch 7 of the tubes 3 of the first bundle 11 of tubes.
- only part of the tubes 4 of the second heat exchange section 2 is opposite the first branch 5 of the tubes 3 of the first heat exchange section 1.
- the tubes 4 of the second bundle 12 of tubes extend transversely to the tubes 3 of the first bundle
- the second heat exchange section 2 is of substantially parallelepiped shape.
- the tubes 4 of the second bundle 12 of tubes are tightly linked to the second distributor 19 at their first end 17. Likewise, the tubes 4 of the second bundle 12 of tubes are tightly linked to the second collector 20 at their second end 18. The tubes 4 of the second bundle 12 of tubes are for example brazed to the second distributor 19 as well as to the second collector 20.
- the second collector 20 extends transversely to the axis of the tubes 4 of the second bundle 12 of tubes.
- the second collector 20 includes a heat transfer liquid outlet 22.
- the second collector 20 and the second distributor 19 extend along the vertical axis Z.
- the relative position of the inlet 21 and the outlet 22 of the heat transfer liquid can vary, according to different embodiments.
- the heat transfer liquid inlet 21 and the heat transfer liquid outlet 22 are arranged on opposite lateral sides of the heat exchanger 50.
- inlet 21 and outlet 22 are on the same lateral side.
- the circulation of the heat transfer liquid in the collector and the distributor is adapted accordingly.
- the periphery of the tubes 4 of the second bundle 12 of tubes has a cross section of oblong shape.
- Figure 4 describes an alternative embodiment in which the heat exchanger 50 comprises a support 30 disposed between at least part of the tubes 4 of the second bundle 12 of tubes and the base 6 of at least part of the tubes 3 of the first bundle 11 of tubes.
- the heat exchanger 50 comprises a support 30 connecting the second heat exchange section 2 to the base 6 of the tubes 3 of the first bundle 11 of tubes.
- the support 30 has a thermal conductivity lower than the thermal conductivity of the tubes 3 of the first bundle 11, preferably less than 10% of the thermal conductivity of the tubes 3 of the first bundle 11.
- the support 30 thermally insulates the base 6 of the tubes 3 of the first heat exchange section 1 with respect to the second heat exchange section, avoiding the formation of a thermal bridge.
- the support 30 is for example made of plastic, in particular polyamide loaded with glass fibers (for example PA6 loaded with 30% glass fibers) or even polypropylene loaded with glass fibers (for example PP loaded with 30 % glass fibers.
- the support 30 here comprises a sealed wall 27 connecting the second heat exchange section 2 to the base 6 of the tubes 3 of the first bundle 1 1 of tubes so as to block circulation of the air flow F between the second heat exchange section 2 and the base 6 of the tubes 3 of the first bundle 11 of tubes.
- the sealed wall 27 prevents the air flow from circulating in the space between the base of the tubes 3 of the first bundle 11 and the face 26 of the second heat exchange section, which is located opposite -screw.
- the sealed wall 27 thus prevents part of the air flow F from emerging from the exchanger 1 without exchanging heat with the second heat exchange section 2.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2212163A FR3142241B1 (fr) | 2022-11-22 | 2022-11-22 | Echangeur de chaleur pour véhicule automobile |
| PCT/EP2023/082050 WO2024110305A1 (fr) | 2022-11-22 | 2023-11-16 | Echangeur de chaleur pour vehicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4623260A1 true EP4623260A1 (fr) | 2025-10-01 |
Family
ID=85018622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23804723.7A Pending EP4623260A1 (fr) | 2022-11-22 | 2023-11-16 | Echangeur de chaleur pour vehicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4623260A1 (fr) |
| CN (1) | CN120239801B (fr) |
| FR (1) | FR3142241B1 (fr) |
| WO (1) | WO2024110305A1 (fr) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100389698B1 (ko) * | 2000-12-11 | 2003-06-27 | 삼성공조 주식회사 | 고/저온 수냉식 냉각시스템 |
| JP4108509B2 (ja) * | 2003-03-06 | 2008-06-25 | 株式会社日本クライメイトシステムズ | 車両用空調装置 |
| JP4617976B2 (ja) * | 2005-04-13 | 2011-01-26 | 株式会社デンソー | 熱交換器組立体 |
| JP2007192474A (ja) * | 2006-01-19 | 2007-08-02 | Calsonic Kansei Corp | 熱交換器 |
| JP6083339B2 (ja) * | 2013-07-09 | 2017-02-22 | 株式会社デンソー | 車両用空調装置 |
| KR101802748B1 (ko) * | 2013-08-14 | 2017-11-29 | 한온시스템 주식회사 | 쿨링모듈 |
| EP3032182B1 (fr) * | 2013-09-11 | 2018-09-05 | Daikin Industries, Ltd. | Échangeur thermique et climatiseur |
| US10247482B2 (en) * | 2013-12-13 | 2019-04-02 | Hangzhou Sanhua Research Institute Co., Ltd. | Bent heat exchanger and method for bending the heat exchanger |
| WO2018037838A1 (fr) * | 2016-08-26 | 2018-03-01 | 株式会社デンソー | Échangeur de chaleur de type combiné |
| JP2018189258A (ja) * | 2017-04-28 | 2018-11-29 | サンデンホールディングス株式会社 | 熱交換器 |
| DE102018112800B4 (de) * | 2017-05-31 | 2025-01-30 | Hanon Systems | Kühlmodul für Fahrzeug |
| KR102567146B1 (ko) * | 2017-05-31 | 2023-08-18 | 한온시스템 주식회사 | 차량용 쿨링모듈 |
| US10538214B2 (en) * | 2017-11-15 | 2020-01-21 | Denso International America, Inc. | Controlled in-tank flow guide for heat exchanger |
| FR3076606B1 (fr) * | 2018-01-09 | 2020-05-22 | Valeo Systemes Thermiques | Systeme de traitement thermique pour vehicule electrique ou hybride |
| CN209689453U (zh) * | 2018-12-20 | 2019-11-26 | 杭州三花微通道换热器有限公司 | 换热器 |
-
2022
- 2022-11-22 FR FR2212163A patent/FR3142241B1/fr active Active
-
2023
- 2023-11-16 EP EP23804723.7A patent/EP4623260A1/fr active Pending
- 2023-11-16 WO PCT/EP2023/082050 patent/WO2024110305A1/fr not_active Ceased
- 2023-11-16 CN CN202380080648.1A patent/CN120239801B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3142241A1 (fr) | 2024-05-24 |
| CN120239801B (zh) | 2026-05-08 |
| FR3142241B1 (fr) | 2024-10-04 |
| CN120239801A (zh) | 2025-07-01 |
| WO2024110305A1 (fr) | 2024-05-30 |
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