EP2199709B1 - Device comprising an internal heat exchanger and an accumulator - Google Patents

Device comprising an internal heat exchanger and an accumulator Download PDF

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Publication number
EP2199709B1
EP2199709B1 EP09179140.0A EP09179140A EP2199709B1 EP 2199709 B1 EP2199709 B1 EP 2199709B1 EP 09179140 A EP09179140 A EP 09179140A EP 2199709 B1 EP2199709 B1 EP 2199709B1
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EP
European Patent Office
Prior art keywords
heat exchanger
combined device
flat tube
central axis
pipe
Prior art date
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EP09179140.0A
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German (de)
French (fr)
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EP2199709A3 (en
EP2199709A2 (en
Inventor
Jimmy Lemee
Christophe Denoual
Alain Pourmarin
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • F28D7/0033—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes the conduits for one medium or the conduits for both media being bent
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels

Definitions

  • the present invention is in the field of air conditioning loops cooperating with a ventilation system, heating and / or air conditioning of a motor vehicle. It relates to a combined device comprising a heat exchanger and a accumulator participating in such a loop. It also relates to an air conditioning loop comprising such a combined device.
  • a motor vehicle is commonly equipped with a ventilation, heating and / or air conditioning system to regulate the aerothermal parameters of the air contained inside the passenger compartment of the vehicle.
  • a ventilation, heating and / or air conditioning system to regulate the aerothermal parameters of the air contained inside the passenger compartment of the vehicle.
  • Such an installation cooperates with an air conditioning loop to cool a stream of air prior to the delivery of the latter inside the passenger compartment.
  • Said loop comprises a plurality of elements or components inside which circulates successively, that is to say in series, a cooling fluid, such as a supercritical fluid, carbon dioxide known under the reference R744.
  • These elements comprise at least one compressor, a gas cooler, a heat exchanger, more particularly called internal heat exchanger, an expansion member, an evaporator and an accumulator.
  • the refrigerant flows from the compressor to the gas cooler, then through a "high pressure” branch of the internal heat exchanger, then to the expansion member, then through the evaporator, and then to the accumulator, and finally through a branch "low pressure" of the internal heat exchanger, to return to the compressor.
  • the compressor is intended to receive the refrigerant fluid in the gaseous state and to compress it to carry it at high pressure.
  • the gas cooler is able to cool the compressed refrigerant at a relatively constant pressure, giving up heat to its environment.
  • the expansion member is able to lower the pressure of the refrigerant leaving the gas cooler by bringing it at least partly in the liquid state.
  • the evaporator is itself able to bring the refrigerant fluid arriving in the liquid state coming from the expansion element, at a relatively constant pressure, into the gaseous state, by taking heat from a flow of air which crosses the evaporator. The vaporized refrigerant is then sucked by the compressor.
  • the air conditioning loop includes a "high pressure" line that starts at the outlet of the compressor and ends at the inlet of the expansion member, according to a direction of circulation of the refrigerant fluid inside the air conditioning loop, the cooler of gas and the branch "high pressure" of the heat exchanger being interposed between these two points.
  • the air conditioning loop also comprises a "low pressure" line which starts at the outlet of the expansion device and ends at the inlet of the compressor, according to the direction of circulation of the refrigerant inside the air conditioning loop, the evaporator, the accumulator and the branch "low pressure" of the heat exchanger being interposed between these two points.
  • the accumulator provides a separation function between a gaseous phase and a liquid phase of the refrigerant.
  • the accumulator comprises a separation zone dedicated to this function.
  • the accumulator also provides a storage function for a circulating coolant charge depending on the conditions of use of the air conditioning loop.
  • the accumulator comprises a refrigerant storage zone in the liquid state that said accumulator collects from the evaporator.
  • the accumulator consists of an enclosure housing the separation zone and the accumulation zone, the enclosure comprising a bottom wall which delimits the accumulation zone in the lower part of the enclosure.
  • the heat exchanger is called internal heat exchanger or internal heat exchanger in that it is configured so that the refrigerant circulating inside the branch "high pressure” can yield heat to the circulating refrigerant inside the "low pressure” branch. It is therefore understood that the exchange is between the same fluid circulating at different locations of the air conditioning loop, without exchanging with air for example.
  • the document JP 10019421 proposes to associate the internal heat exchanger and the accumulator in a combined device.
  • the latter comprises said enclosure which is provided with an opening.
  • the chamber houses the internal heat exchanger which overhangs the refrigerant storage zone in the liquid state, the heat exchanger being interposed between the separation zone and the accumulation zone, in the use position. of the combined device on the air conditioning loop.
  • the high pressure refrigerant fluid from the gas cooler enters the interior of the combi device through a "high pressure” inlet through the enclosure to circulate within the heat exchanger internal and finally be discharged out of the combined device via a "high pressure” outlet also provided through the enclosure.
  • the refrigerant fluid at low pressure from the evaporator enters the interior of the combined device through a "low pressure" input still formed through the enclosure.
  • the refrigerant fluid at low pressure and in the liquid state tends to accumulate by gravity above the lower wall of the enclosure while the refrigerant fluid at low pressure and in the gaseous state tends to concentrate in an upper zone of the enclosure.
  • the latter houses a bent duct arranged in a U, a first end of which is disposed in the upper part of the enclosure to admit the refrigerant fluid at low pressure and in the gaseous state into the duct, and convey it to a second end of the conduit in communication with the internal heat exchanger. Inside the latter, the high-pressure refrigerant yields heat to the refrigerant at low pressure.
  • the refrigerant fluid at low pressure and in the gaseous state is discharged out of the internal heat exchanger and out of the combined device through a "low pressure" outlet also formed through a wall of the enclosure.
  • the object of the present invention is therefore to solve the disadvantages described above mainly by cleverly arranging the heat exchanger in the chamber of the accumulator. To do this, the heat exchanger is offset relative to the enclosure so as to minimize the outer dimensions of the combined device. This arrangement makes it possible to create a lateral evacuation chamber at the exchanger without having to either increase the diameter of the enclosure or to lengthen the enclosure to create an evacuation chamber under the heat exchanger.
  • the subject of the invention is therefore a combined device comprising an enclosure housing at least one heat exchanger and an accumulation zone, said enclosure extends along a primary central axis and said heat exchanger extends along a secondary central axis, characterized in that the primary central axis is offset with respect to the secondary central axis.
  • the offset between the primary central axis and the secondary central axis is between one and twenty-five millimeters.
  • the enclosure and the heat exchanger are of cylindrical shape.
  • the heat exchanger comprises at least a first flat tube wound on itself around the secondary central axis.
  • the first flat tube comprises a plurality of channels.
  • the heat exchanger comprises an intake chamber which extends in the center of the first flat tube wound on itself.
  • the combined device comprises an evacuation chamber located at least partially around the heat exchanger, this evacuation chamber being delimited by an outer wall of the heat exchanger and by an inner wall of the enclosure.
  • the heat exchanger comprises a first circulation path delimited by the multiplicity of channels of the first flat tube, this first circulation path being in communication via a first end of the flat tube with the admission chamber and in communication with the evacuation chamber via a second end of the first flat tube.
  • the first circulation path is delimited by a second flat tube wound with the first flat tube.
  • the heat exchanger comprises a second circulation path delimited by a plurality of channels of a third flat tube wound with the first flat tube.
  • the second circulation path is, on the one hand, in communication with a first pipe placed on the periphery of the heat exchanger and, on the other hand, in communication with a second pipe of which the axis is aligned with the secondary central axis.
  • first flat tube and the second flat tube, the third flat tube, the first pipe and the second pipe form a unitary unit.
  • the enclosure is closed by an upper partition and a lower partition and the accumulation zone comprises a bottom wall disposed at the boundary between the heat exchanger and said accumulation zone.
  • the device according to the invention comprises a first conduit which passes through the upper partition and opens into a separation zone located in the chamber and above the accumulation zone.
  • the combined device comprises a second conduit which passes through the lower partition and opens into the evacuation chamber.
  • the invention also relates to an air conditioning loop in which is incorporated a combined device incorporating at least one of the features described above.
  • a first advantage of the invention lies in the fact that it is possible to keep a component of small external dimensions without increasing the internal pressure losses, in particular on the first flow path. This makes it easier to integrate the component according to the invention into an engine compartment where space is increasingly reduced.
  • the figure 1 illustrates a combined device 1 according to the invention comprising an enclosure 2 closed by an upper partition 3, otherwise called upper cover, and a lower partition 4, or lower cover.
  • the enclosure 2 extends along a primary central axis A in a longitudinal direction.
  • the chamber 2 has a section of cylindrical shape but it can also be parallelepipedal shape (square, rectangular, ).
  • the length of the chamber 2 measured in the direction of the primary central axis A is greater than the outside diameter measured perpendicular to the primary central axis A.
  • the combined device 1 also comprises a "high pressure" inlet 5 through which a refrigerant fluid 16 from a gas cooler is admitted inside the combined device 1.
  • This "high pressure” inlet 5 is materialized by a first pipe 12 of tubular shape which passes through the lower partition 4 to connect to a heat exchanger 9.
  • the combined device 1 further comprises a "high pressure” outlet 6 through which the high pressure refrigerant is discharged from the device combined 1 towards the relaxing organ.
  • This "high pressure” outlet 6 takes the form of a second tubular pipe 13, which starts at the heat exchanger 9 to pass through the internal volume of the chamber 2 and open through the upper wall 3.
  • the combined device 1 also comprises a "low pressure" inlet 7 through which the refrigerant fluid from the evaporator is admitted inside the combined device 1.
  • the "low pressure” inlet 7 takes the form of a “low pressure” inlet 7.
  • first pipe 14 which passes through the upper wall 3.
  • the combined device 1 finally has a “low pressure” outlet 8 through which the fluid Low pressure refrigerant is discharged from the combined device 1 to the compressor.
  • This "low pressure” outlet 8 here also takes the form of a second pipe 15 of tubular shape which passes through the lower partition 4.
  • the combined device 1 comprises the enclosure 2, sealed from the outside, which houses the heat exchanger 9, a separation zone 10 between the gas phase 16a and the liquid phase 16b of the refrigerant leaving the the evaporator and an accumulation zone 11 of the refrigerant fluid in the liquid state from the evaporator, or more particularly from the separation zone 10.
  • Said separation zone 10 preferably has a cyclonic structure in the sense that the first pipe 14 is offset relative to the primary central axis A of the enclosure 2 of the combined device 1 to allow a tangential admission of the refrigerant fluid from the The tangential inlet is put into practice by means of a lumen 17 made through the cylindrical wall of the first pipe 14. These provisions are intended to promote the separation between them.
  • One end of the first pipe 14 located inside the internal volume of the chamber 2 is closed by a plate 18. The latter extends perpendicular to the primary central axis A of the chamber 2. A weak game is maintained between the periphery of this plate 18 and the inner wall 19 of the chamber 2 so as to allow the descent by gravity of the liquid phase 16b of the refrigerant 16 to the accumulation zone 11.
  • the accumulation zone 11 is delimited by a bottom wall 20 against which the coolant in the liquid state from the evaporator accumulates by gravity.
  • the "low pressure" inlet 7 being, in the position of use of the combined device 1 on the air-conditioning loop and / or in the operating position of the combined device 1 alone, placed above the lower wall 20, the fluid refrigerant 16 in the liquid state falls naturally by gravity from the entry "low pressure" 7 to the bottom wall 20 to finally rest against it.
  • the bottom wall 20 is sealed against the inner wall 19 of the enclosure 2.
  • the accumulation zone 11 is crossed by the second pipe 13 but is also crossed by an intermediate pipe 21, a first end 21a opens into the separation zone 10, a few millimeters above a plane defined by the plate 18.
  • This arrangement makes it possible to ensure that the liquid phase 16b of the cooling fluid does not enter the intermediate pipe 21 so as to let in only the gas phase 16a of the refrigerating fluid 16.
  • the intermediate pipe 21 passes through the bottom wall 20 and has a second end 21b which is in communication with the heat exchanger 9.
  • the intermediate pipe 21 is of a larger diameter than the second pipe 6 and is mounted coaxially with respect to the latter.
  • both the axis of the intermediate duct 21 and the axis of the second duct 6 are offset with respect to the primary central axis A of the enclosure 2.
  • the intermediate pipe 21 is always of a larger diameter than the second pipe 6.
  • the central axis of the intermediate pipe 21 is coincidental or coaxial with the primary central axis A. It is therefore clear that the intermediate pipe is in the center of the cylinder formed by the enclosure 2. In this configuration, however, the heat exchanger 9 is always shifted as required by the invention.
  • the second pipe 6 is shifted in the intermediate pipe 21, in other words the central axis of the second pipe 6 is not coaxial or coincides with the central axis of the intermediate pipe 21, the latter being confused with the primary central axis A.
  • the bottom wall 20 is preferably perpendicular to the primary central axis A of the chamber 2 of the combined device 1.
  • the separation zone 10 is contiguous to said upper partition 3, being positioned directly below the latter.
  • the accumulation zone 11 is placed between the separation zone 10 and the bottom wall 20, the plate 18 being interposed between the separation zone 10 and the accumulation zone 11.
  • the lower wall 20, which delimits the accumulation zone 11 in the lower part, is disposed above the heat exchanger 9. It will be noted that the accumulation zone 11 is disposed above the heat exchanger 9. along the axis of Earth's gravity.
  • the section of the chamber 2 and the section of the heat exchanger 9 are both cylindrical, which offers perfect form cooperation.
  • the accumulation zone 11 overhanging or placed above the heat exchanger 9 is higher than the heat exchanger 9, along the primary central axis A of the enclosure 2.
  • the heat exchanger 9 consists of a first flat tube 22 wound on itself, preferably around a secondary central axis B of the heat exchanger, this secondary central axis B being distinct, that is to say non-coaxial, of the primary central axis A of the chamber 2 of the combined device 1. It will be noted that this offset d, formed by the distance between the primary central axis A of the secondary central axis B , allows to release an area of the lower partition 4 in which it is then easier to unclog the second pipe 15 without increasing the external dimensions of the chamber 2, and therefore the combined device as a whole. Note that the primary central axis A and the secondary central axis B are parallel.
  • the first flat tube 22 houses a multiplicity of channels 23, otherwise called micro-channels, for the passage of refrigerant fluid at low pressure.
  • This multiplicity of channels 23 materializes a first flow path of the refrigerant fluid at low pressure.
  • This first circulation path is in communication on one side with an intake chamber 24 and on the other with an evacuation chamber 25.
  • the admission chamber 24 is delimited by the end 21b of the intermediate pipe 21 by the first turn of first flat tube 22 wound on itself and by the lower partition 4.
  • the evacuation chamber 25 is delimited by a peripheral winding of the winding of the first flat tube 22 and / or a third flat tube 27 (which will be described below in more detail), thus defining the wall external of the heat exchanger 9, by the bottom wall 20, by the lower partition 4 and finally by the inner wall 19 of the chamber 2 to the right of the heat exchanger 9.
  • the consequence of the shift d between the primary central axis A and the secondary central axis is the ovoid shape that takes the section of the evacuation chamber.
  • the first circulation path comprises a second flat tube 26 provided with a plurality of channels 23.
  • This second flat tube 26 is wound with the first flat tube 22 and together forms the first flow path of the refrigerant fluid 16 at "low pressure" .
  • the heat exchanger 9 further comprises a third flat tube 27 whose multiple channels 23 defines a second circulation path, the latter being borrowed by the refrigerant fluid "high pressure".
  • This third flat tube 27 is on one side in communication with the first pipe 12 placed at the periphery of the heat exchanger and the other, in communication with the second pipe 13 whose axis is aligned or coincident with the secondary central axis B of the heat exchanger 9.
  • the first pipe 12 is then sealingly connected (for example soldered, soldered, etc.) to the end of the third flat tube 27 and the multiplicity of channels 23 communicates fluidly with the interior of the first pipe 12.
  • the other end of the third flat tube 27 which communicates with the second pipe 13.
  • the heat exchanger 9 does not comprise a second flat tube 26, it then consists of a first flat tube 22 and a third flat tube 27 wound together to form respectively the first circulation path and the second road.
  • the third flat tube 27 is then inserted, or sandwiched, between the first and the second flat tube.
  • the three flat tubes (first, third and second) are wound around the secondary central axis B of the heat exchanger 9 so that the respective turns formed by said tubes are nested one in the other.
  • An intermediate subassembly consists of the first flat tube 22 and the second flat tube 26, the third flat tube 27, the first pipe 12 and the second pipe 13 so as to form a unitary assembly.
  • This set is constituted as soon as the elements mentioned above are connected indemontrably without destroying the unitary unit. It is advantageously a solid and waterproof connection (provided for example by soldering, welding, etc ...) which allows to connect all these elements together.
  • the figure 2 illustrates the invention in a sectional view perpendicular to the primary central axis A of the enclosure 2.
  • the intersection between the broken line CC and the broken line FF illustrates the primary central axis A of the enclosure 2, plus particularly, the central axis of the volume defined by the inner wall 19.
  • the thickness of the chamber 2 has been voluntarily shown in part so as not to overload the figure 2 .
  • the intersection between the broken line EE and the broken line FF illustrates the secondary central axis B of the heat exchanger 9.
  • the offset d is the distance that separates the primary central axis A of the chamber 2 and the secondary central axis B of the heat exchanger 9, this offset being a minimum value of one millimeter below which the space saving laterally to the heat exchanger 9 becomes marginal.
  • the maximum value of the offset d is twenty-five millimeters because it is the maximum value to maintain a satisfactory compromise between the outer diameter of the heat exchanger and the outside diameter of the enclosure 2.
  • the invention releases a lateral space to the heat exchanger 9, this space then constituting the evacuation chamber 25. It can be seen that the second duct 15 can then be placed more easily without requiring an increase in the diameter. of the enclosure 2, this with heat exchanger diameter 9, enclosure diameter 2 and constant second pipe diameter 15.
  • the third flat tube 27 is connected at one end to the first pipe 12 located at the periphery of the heat exchanger 9, while the other end of the third flat tube 27 is connected to the second pipe 13 whose axis is coincides with the secondary central axis B of the heat exchanger 9.
  • the first flat tube 22 and the second flat tube 26 capture the refrigerant fluid in the gaseous state and at "low pressure" in the intake chamber via the end of the flat tubes.
  • the refrigerant fluid "low pressure” travels in the first and second flat tubes 22, 26 against the current circulation of the "high pressure” refrigerant which travels in the third flat tube 27.
  • the fluid "low pressure” out through the ends of the first and second flat tubes 22 and 26 to spread in the discharge chamber 25 and out of the combined device 1 via the second pipe 15.
  • the combined device 1 is capable of being fluidly connected to the air conditioning loop via the upper and lower partitions 4.
  • the connections between the combined device 1 and on the one hand the compressor and on the other hand the gas cooler are made via conduits connected to the lower partition 4 while the connections between the combined device 1 and on the one hand the evaporator and other the detent member is formed by means of conduits connected to the upper partition 3.
  • Such arrangements facilitate the integration of the combined device 1 on the air conditioning loop and therefore its integration into the engine compartment of the motor vehicle.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

La présente invention est du domaine des boucles de climatisation coopérant avec une installation de ventilation, de chauffage et/ou de climatisation d'un véhicule automobile. Elle a pour objet un dispositif combiné comprenant un échangeur de chaleur et un accumulateur participant d'une telle boucle. Elle a aussi pour objet une boucle de climatisation comprenant un tel dispositif combiné.The present invention is in the field of air conditioning loops cooperating with a ventilation system, heating and / or air conditioning of a motor vehicle. It relates to a combined device comprising a heat exchanger and a accumulator participating in such a loop. It also relates to an air conditioning loop comprising such a combined device.

Un véhicule automobile est couramment équipé d'une installation de ventilation, de chauffage et/ou de climatisation pour réguler les paramètres aérothermiques de l'air contenu à l'intérieur de l'habitacle du véhicule. Une telle installation coopère avec une boucle de climatisation pour refroidir un flux d'air préalablement à la délivrance de ce dernier à l'intérieur de l'habitacle. Ladite boucle comprend une pluralité d'éléments ou composants à l'intérieur desquels circule successivement, c'est-à-dire en série, un fluide réfrigérant, tel qu'un fluide supercritique, dioxyde de carbone connu sous la référence R744. Ces éléments comprennent au moins un compresseur, un refroidisseur de gaz, un échangeur de chaleur, plus particulièrement appelé échangeur de chaleur interne, un organe de détente, un évaporateur et un accumulateur.A motor vehicle is commonly equipped with a ventilation, heating and / or air conditioning system to regulate the aerothermal parameters of the air contained inside the passenger compartment of the vehicle. Such an installation cooperates with an air conditioning loop to cool a stream of air prior to the delivery of the latter inside the passenger compartment. Said loop comprises a plurality of elements or components inside which circulates successively, that is to say in series, a cooling fluid, such as a supercritical fluid, carbon dioxide known under the reference R744. These elements comprise at least one compressor, a gas cooler, a heat exchanger, more particularly called internal heat exchanger, an expansion member, an evaporator and an accumulator.

Le fluide réfrigérant circule depuis le compresseur vers le refroidisseur de gaz, puis au travers d'une branche « haute pression » de l'échangeur de chaleur interne, puis vers l'organe de détente, ensuite au travers de l'évaporateur, puis vers l'accumulateur, et enfin au travers d'une branche « basse pression » de l'échangeur de chaleur interne, pour retourner au compresseur.The refrigerant flows from the compressor to the gas cooler, then through a "high pressure" branch of the internal heat exchanger, then to the expansion member, then through the evaporator, and then to the accumulator, and finally through a branch "low pressure" of the internal heat exchanger, to return to the compressor.

Le compresseur est destiné à recevoir le fluide réfrigérant à l'état gazeux et à le comprimer pour le porter à haute pression. Le refroidisseur de gaz est apte à refroidir le fluide réfrigérant comprimé, à pression relativement constante, en cédant de la chaleur à son environnement. L'organe de détente est à même d'abaisser la pression du fluide réfrigérant sortant du refroidisseur de gaz en l'amenant au moins en partie à l'état liquide. L'évaporateur est quant à lui propre à faire passer à l'état gazeux le fluide réfrigérant arrivant à l'état liquide provenant de l'organe de détente, à pression relativement constante, en prélevant de la chaleur à un flux d'air qui traverse l'évaporateur. Le fluide réfrigérant vaporisé est ensuite aspiré par le compresseur. Ces dispositions sont telles que le fluide réfrigérant est à haute pression à l'intérieur de la branche « haute pression » de l'échangeur de chaleur tandis qu'il est à basse pression à l'intérieur de la branche « basse pression » de l'échangeur de chaleur.The compressor is intended to receive the refrigerant fluid in the gaseous state and to compress it to carry it at high pressure. The gas cooler is able to cool the compressed refrigerant at a relatively constant pressure, giving up heat to its environment. The expansion member is able to lower the pressure of the refrigerant leaving the gas cooler by bringing it at least partly in the liquid state. The evaporator is itself able to bring the refrigerant fluid arriving in the liquid state coming from the expansion element, at a relatively constant pressure, into the gaseous state, by taking heat from a flow of air which crosses the evaporator. The vaporized refrigerant is then sucked by the compressor. These arrangements are such that the coolant is at high pressure inside the "high pressure" branch of the heat exchanger while it is at low pressure inside the "low pressure" branch of the heat exchanger. 'heat exchanger.

La boucle de climatisation comprend une ligne « haute pression » qui débute en sortie du compresseur et se termine en entrée de l'organe de détente, selon un sens de circulation du fluide réfrigérant à l'intérieur de la boucle de climatisation, le refroidisseur de gaz et la branche « haute pression » de l'échangeur de chaleur étant interposés entre ces deux points.The air conditioning loop includes a "high pressure" line that starts at the outlet of the compressor and ends at the inlet of the expansion member, according to a direction of circulation of the refrigerant fluid inside the air conditioning loop, the cooler of gas and the branch "high pressure" of the heat exchanger being interposed between these two points.

La boucle de climatisation comprend aussi une ligne « basse pression » qui débute en sortie de l'organe de détente et se termine en entrée du compresseur, selon le sens de circulation du fluide réfrigérant à l'intérieur de la boucle de climatisation, l'évaporateur, l'accumulateur et la branche « basse pression » de l'échangeur de chaleur étant interposés entre ces deux points.The air conditioning loop also comprises a "low pressure" line which starts at the outlet of the expansion device and ends at the inlet of the compressor, according to the direction of circulation of the refrigerant inside the air conditioning loop, the evaporator, the accumulator and the branch "low pressure" of the heat exchanger being interposed between these two points.

L'accumulateur assure une fonction de séparation entre une phase gazeuse et une phase liquide du fluide réfrigérant. A cette fin, l'accumulateur comporte une zone de séparation dédiée à cette fonction. L'accumulateur assure aussi une fonction de stockage d'une charge circulante de fluide réfrigérant en fonction des conditions d'utilisation de la boucle de climatisation. Pour cela, l'accumulateur comporte une zone d'accumulation du fluide réfrigérant à l'état liquide que ledit accumulateur recueille en provenance de l'évaporateur. Dans sa généralité, l'accumulateur est constitué d'une enceinte logeant la zone de séparation et la zone d'accumulation, l'enceinte comprenant une paroi inférieure qui délimite la zone d'accumulation en partie basse de l'enceinte. Ainsi, le fluide réfrigérant à l'état liquide en provenance de l'évaporateur se sépare en phase gazeuse et en phase liquide, cette dernière venant s'accumuler par gravité au-dessus de la paroi inférieure, à l'intérieur de la zone d'accumulation.The accumulator provides a separation function between a gaseous phase and a liquid phase of the refrigerant. For this purpose, the accumulator comprises a separation zone dedicated to this function. The accumulator also provides a storage function for a circulating coolant charge depending on the conditions of use of the air conditioning loop. For this, the accumulator comprises a refrigerant storage zone in the liquid state that said accumulator collects from the evaporator. In its generality, the accumulator consists of an enclosure housing the separation zone and the accumulation zone, the enclosure comprising a bottom wall which delimits the accumulation zone in the lower part of the enclosure. Thus, the refrigerant fluid in the liquid state from the evaporator separates in the gas phase and in the liquid phase, the latter coming to accumulate by gravity above the lower wall, within the zone d 'accumulation.

L'échangeur de chaleur est appelé échangeur interne ou échangeur de chaleur interne en ce qu'il est configuré de manière à ce que le fluide réfrigérant circulant à l'intérieur de la branche « haute pression » puisse céder de la chaleur au fluide réfrigérant circulant à l'intérieur de la branche « basse pression ». On comprend donc que l'échange se fait entre le même fluide en circulation à des endroits différents de la boucle de climatisation, sans échanger avec de l'air par exemple.The heat exchanger is called internal heat exchanger or internal heat exchanger in that it is configured so that the refrigerant circulating inside the branch "high pressure" can yield heat to the circulating refrigerant inside the "low pressure" branch. It is therefore understood that the exchange is between the same fluid circulating at different locations of the air conditioning loop, without exchanging with air for example.

Le document JP 10019421 (NIPPON SOKEN ; DENSO CORP) propose d'associer l'échangeur de chaleur interne et l'accumulateur en un dispositif combiné. Dans sa généralité, ce dernier comprend ladite enceinte qui est pourvue d'une ouverture. L'enceinte loge l'échangeur de chaleur interne qui surplombe la zone d'accumulation de fluide réfrigérant à l'état liquide, l'échangeur de chaleur étant interposé entre la zone de séparation et la zone d'accumulation, en position d'utilisation du dispositif combiné sur la boucle de climatisation.The document JP 10019421 (NIPPON SOKEN, DENSO CORP) proposes to associate the internal heat exchanger and the accumulator in a combined device. In its generality, the latter comprises said enclosure which is provided with an opening. The chamber houses the internal heat exchanger which overhangs the refrigerant storage zone in the liquid state, the heat exchanger being interposed between the separation zone and the accumulation zone, in the use position. of the combined device on the air conditioning loop.

Le fluide réfrigérant à haute pression en provenance du refroidisseur de gaz pénètre à l'intérieur du dispositif combiné par l'intermédiaire d'une entrée « haute pression » ménagée à travers l'enceinte pour circuler à l'intérieur de l'échangeur de chaleur interne et finalement être évacué hors du dispositif combiné par l'intermédiaire d'une sortie « haute pression » également ménagée à travers l'enceinte.The high pressure refrigerant fluid from the gas cooler enters the interior of the combi device through a "high pressure" inlet through the enclosure to circulate within the heat exchanger internal and finally be discharged out of the combined device via a "high pressure" outlet also provided through the enclosure.

Le fluide réfrigérant à basse pression en provenance de l'évaporateur pénètre à l'intérieur du dispositif combiné par l'intermédiaire d'une entrée « basse pression » encore ménagée à travers l'enceinte. Le fluide réfrigérant à basse pression et à l'état liquide tend à s'accumuler par gravité au dessus de la paroi inférieure de l'enceinte tandis que le fluide réfrigérant à basse pression et à l'état gazeux tend à se concentrer en une zone supérieure de l'enceinte. Cette dernière loge un conduit coudé agencé en U, dont une première extrémité est disposée en partie supérieure de l'enceinte pour admettre à l'intérieur du conduit le fluide réfrigérant à basse pression et à l'état gazeux, et le véhiculer jusqu'à une deuxième extrémité du conduit en communication avec l'échangeur de chaleur interne. A l'intérieur de ce dernier, le fluide réfrigérant à haute pression cède de la chaleur au fluide réfrigérant à basse pression. Le fluide réfrigérant à basse pression et à l'état gazeux est évacué hors de l'échangeur de chaleur interne et hors du dispositif combiné à travers une sortie « basse pression » elle aussi encore ménagée à travers une paroi de l'enceinte.The refrigerant fluid at low pressure from the evaporator enters the interior of the combined device through a "low pressure" input still formed through the enclosure. The refrigerant fluid at low pressure and in the liquid state tends to accumulate by gravity above the lower wall of the enclosure while the refrigerant fluid at low pressure and in the gaseous state tends to concentrate in an upper zone of the enclosure. The latter houses a bent duct arranged in a U, a first end of which is disposed in the upper part of the enclosure to admit the refrigerant fluid at low pressure and in the gaseous state into the duct, and convey it to a second end of the conduit in communication with the internal heat exchanger. Inside the latter, the high-pressure refrigerant yields heat to the refrigerant at low pressure. The refrigerant fluid at low pressure and in the gaseous state is discharged out of the internal heat exchanger and out of the combined device through a "low pressure" outlet also formed through a wall of the enclosure.

Cependant, ce dispositif combiné selon cet art antérieur souffre d'inconvénients majeurs.However, this combined device according to this prior art suffers from major disadvantages.

En effet, ce document JP 10019421 ne prend pas en compte l'intégration d'un tel dispositif combiné dans un compartiment moteur d'un véhicule. Il apparaît contraignant au regard de l'agencement de la boucle de climatisation que les entrées et sorties « haute pression » et « basse pression » de fluide réfrigérant soient toutes ménagées du même côté, c'est-à-dire au travers de la partie haute de l'enceinte. Par ailleurs, l'intégration dans le véhicule impose de trouver des solutions techniques pour réduire au maximum le volume utilisé par le composant en question. Le document US2002 078 702 A1 propose un dispositif combiné comprenant un échangeur de chaleur interne et un accumulateur.Indeed, this document JP 10019421 does not take into account the integration of such a combined device in a motor compartment of a vehicle. It appears to be restrictive with regard to the arrangement of the air conditioning loop that the "high pressure" and "low pressure" refrigerant inlet and outlet are all provided on the same side, that is to say through the portion high of the speaker. Moreover, integration into the vehicle requires finding technical solutions to minimize the volume used by the component in question. The document US2002 078 702 A1 proposes a combined device comprising an internal heat exchanger and an accumulator.

Le but de la présente invention est donc de résoudre les inconvénients décrits ci-dessus principalement en disposant astucieusement l'échangeur de chaleur dans l'enceinte de l'accumulateur. Pour ce faire, l'échangeur de chaleur est désaxé par rapport à l'enceinte de tel sorte à minimiser les dimensions extérieures du dispositif combiné. Cette disposition permet de créer une chambre d'évacuation latérale à l'échangeur sans être obligé soit d'augmenter le diamètre de l'enceinte, soit d'allonger l'enceinte pour créer une chambre d'évacuation sous l'échangeur de chaleur.The object of the present invention is therefore to solve the disadvantages described above mainly by cleverly arranging the heat exchanger in the chamber of the accumulator. To do this, the heat exchanger is offset relative to the enclosure so as to minimize the outer dimensions of the combined device. This arrangement makes it possible to create a lateral evacuation chamber at the exchanger without having to either increase the diameter of the enclosure or to lengthen the enclosure to create an evacuation chamber under the heat exchanger.

L'invention a donc pour objet un dispositif combiné comprenant une enceinte logeant au moins un échangeur de chaleur et une zone d'accumulation, ladite enceinte s'étend selon un axe central primaire et ledit échangeur de chaleur s'étend selon un axe central secondaire, caractérisé en ce que l'axe central primaire est décalé par rapport à l'axe central secondaire.The subject of the invention is therefore a combined device comprising an enclosure housing at least one heat exchanger and an accumulation zone, said enclosure extends along a primary central axis and said heat exchanger extends along a secondary central axis, characterized in that the primary central axis is offset with respect to the secondary central axis.

Selon une première caractéristique de l'invention, le décalage entre l'axe central primaire et l'axe central secondaire est compris entre un et vingt-cinq millimètres.According to a first characteristic of the invention, the offset between the primary central axis and the secondary central axis is between one and twenty-five millimeters.

Selon une deuxième caractéristique de l'invention, l'enceinte et l'échangeur de chaleur sont de forme cylindrique.According to a second characteristic of the invention, the enclosure and the heat exchanger are of cylindrical shape.

Selon une autre caractéristique de l'invention, l'échangeur de chaleur comprend au moins un premier tube plat enroulé sur lui-même autour de l'axe central secondaire.According to another characteristic of the invention, the heat exchanger comprises at least a first flat tube wound on itself around the secondary central axis.

Selon encore une caractéristique de l'invention, le premier tube plat comprend une multiplicité de canaux.According to another characteristic of the invention, the first flat tube comprises a plurality of channels.

Selon encore une autre caractéristique de l'invention, l'échangeur de chaleur comprend une chambre d'admission qui s'étend au centre du premier tube plat enroulé sur lui-même.According to yet another characteristic of the invention, the heat exchanger comprises an intake chamber which extends in the center of the first flat tube wound on itself.

Le dispositif combiné comprend une chambre d'évacuation localisée au moins partiellement autour de l'échangeur de chaleur, cette chambre d'évacuation étant délimitée par une paroi externe de l'échangeur de chaleur et par une paroi interne de l'enceinte.The combined device comprises an evacuation chamber located at least partially around the heat exchanger, this evacuation chamber being delimited by an outer wall of the heat exchanger and by an inner wall of the enclosure.

Avantageusement encore, l'échangeur de chaleur comprend un premier chemin de circulation délimité par la multiplicité de canaux du premier tube plat, ce premier chemin de circulation étant en communication via une première extrémité du tube plat avec la chambre d'admission et en communication avec la chambre d'évacuation par l'intermédiaire d'une seconde extrémité du premier tube plat.Advantageously, the heat exchanger comprises a first circulation path delimited by the multiplicity of channels of the first flat tube, this first circulation path being in communication via a first end of the flat tube with the admission chamber and in communication with the evacuation chamber via a second end of the first flat tube.

Selon une caractéristique avantageuse de l'invention, le premier chemin de circulation est délimité par un deuxième tube plat enroulé avec le premier tube plat.According to an advantageous characteristic of the invention, the first circulation path is delimited by a second flat tube wound with the first flat tube.

L'échangeur de chaleur comprend un deuxième chemin de circulation délimité par une multiplicité de canaux d'un troisième tube plat enroulé avec le premier tube plat.The heat exchanger comprises a second circulation path delimited by a plurality of channels of a third flat tube wound with the first flat tube.

Selon une autre caractéristique de l'invention, le deuxième chemin de circulation est d'une part, en communication avec une première canalisation placée à la périphérie de l'échangeur de chaleur et d'autre part, en communication avec une deuxième canalisation dont l'axe est aligné sur l'axe central secondaire.According to another characteristic of the invention, the second circulation path is, on the one hand, in communication with a first pipe placed on the periphery of the heat exchanger and, on the other hand, in communication with a second pipe of which the axis is aligned with the secondary central axis.

En outre, le premier tube plat et le deuxième tube plat, le troisième tube plat, la première canalisation et la deuxième canalisation forment un ensemble unitaire.In addition, the first flat tube and the second flat tube, the third flat tube, the first pipe and the second pipe form a unitary unit.

Par ailleurs, l'enceinte est fermée par une cloison supérieure et une cloison inférieure et la zone d'accumulation comporte une paroi inférieure disposée à la frontière entre l'échangeur de chaleur et ladite zone d'accumulation.Furthermore, the enclosure is closed by an upper partition and a lower partition and the accumulation zone comprises a bottom wall disposed at the boundary between the heat exchanger and said accumulation zone.

Le dispositif selon l'invention comporte une première conduite qui traverse la cloison supérieure et débouche dans une zone de séparation localisée dans l'enceinte et au-dessus de la zone d'accumulation.The device according to the invention comprises a first conduit which passes through the upper partition and opens into a separation zone located in the chamber and above the accumulation zone.

Enfin, le dispositif combiné comprend une deuxième conduite qui traverse la cloison inférieure et débouche dans la chambre d'évacuation.Finally, the combined device comprises a second conduit which passes through the lower partition and opens into the evacuation chamber.

L'invention vise aussi une boucle de climatisation dans laquelle est incorporé un dispositif combiné reprenant au moins une des caractéristiques exposées ci-dessus.The invention also relates to an air conditioning loop in which is incorporated a combined device incorporating at least one of the features described above.

Un tout premier avantage selon l'invention réside dans le fait qu'il est possible de conserver un composant de faible encombrement extérieur sans pour autant augmenter les pertes de charges internes, en particulier sur le premier chemin de circulation. Ceci permet d'intégrer plus facilement le composant selon l'invention dans un compartiment moteur où la place est de plus en plus réduite.A first advantage of the invention lies in the fact that it is possible to keep a component of small external dimensions without increasing the internal pressure losses, in particular on the first flow path. This makes it easier to integrate the component according to the invention into an engine compartment where space is increasingly reduced.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement à la lecture de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels :

  • la figure 1 est une vue en coupe longitudinale du dispositif combiné selon l'invention,
  • la figure 2 est une vue en coupe transversale au niveau de l'échangeur de chaleur d'un dispositif combiné selon l'invention.
Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which:
  • the figure 1 is a longitudinal sectional view of the combined device according to the invention,
  • the figure 2 is a cross-sectional view at the level of the heat exchanger of a combined device according to the invention.

Les figures ci-dessus serviront à mettre en oeuvre l'invention et pourront aussi servir à mieux la définir le cas échéant.The figures above will be used to implement the invention and may also be used to better define where appropriate.

La figure 1 illustre un dispositif combiné 1 selon l'invention comprenant une enceinte 2 fermée par une cloison supérieure 3, autrement appelée couvercle supérieur, et par une cloison inférieure 4, ou couvercle inférieur.The figure 1 illustrates a combined device 1 according to the invention comprising an enclosure 2 closed by an upper partition 3, otherwise called upper cover, and a lower partition 4, or lower cover.

L'enceinte 2 s'étend selon un axe central primaire A dans une direction longitudinale. L'enceinte 2 présente une section de forme cylindrique mais elle peut aussi être de forme parallélépipédique (carré, rectangulaire, ...). La longueur de l'enceinte 2 mesurée dans la direction de l'axe central primaire A est plus grande que le diamètre extérieur mesuré perpendiculairement à l'axe central primaire A.The enclosure 2 extends along a primary central axis A in a longitudinal direction. The chamber 2 has a section of cylindrical shape but it can also be parallelepipedal shape (square, rectangular, ...). The length of the chamber 2 measured in the direction of the primary central axis A is greater than the outside diameter measured perpendicular to the primary central axis A.

Le dispositif combiné 1 comporte aussi une entrée « haute pression » 5 à travers laquelle un fluide réfrigérant 16 en provenance d'un refroidisseur de gaz est admis à l'intérieur du dispositif combiné 1. Cette entrée « haute pression » 5 se matérialise par une première canalisation 12 de forme tubulaire qui traverse la cloison inférieure 4 pour se raccorder à un échangeur de chaleur 9. Le dispositif combiné 1 comporte en outre une sortie « haute pression » 6 à travers laquelle le fluide réfrigérant à haute pression est évacué hors du dispositif combiné 1 vers l'organe de détente. Cette sortie « haute pression » 6 prend la forme d'une deuxième canalisation 13 tubulaire, qui débute au niveau de l'échangeur de chaleur 9 pour traverser le volume interne de l'enceinte 2 et déboucher au travers de la cloison supérieure 3.The combined device 1 also comprises a "high pressure" inlet 5 through which a refrigerant fluid 16 from a gas cooler is admitted inside the combined device 1. This "high pressure" inlet 5 is materialized by a first pipe 12 of tubular shape which passes through the lower partition 4 to connect to a heat exchanger 9. The combined device 1 further comprises a "high pressure" outlet 6 through which the high pressure refrigerant is discharged from the device combined 1 towards the relaxing organ. This "high pressure" outlet 6 takes the form of a second tubular pipe 13, which starts at the heat exchanger 9 to pass through the internal volume of the chamber 2 and open through the upper wall 3.

Le dispositif combiné 1 comporte aussi une entrée « basse pression » 7 à travers laquelle le fluide réfrigérant en provenance de l'évaporateur est admis à l'intérieur du dispositif combiné 1. L'entrée « basse pression » 7 prend la forme d'une première conduite 14 qui traverse la cloison supérieure 3. Le dispositif combiné 1 comporte enfin une sortie « basse pression » 8 à travers laquelle le fluide réfrigérant à basse pression est évacué hors du dispositif combiné 1 vers le compresseur. Cette sortie « basse pression » 8 prend ici aussi la forme d'une deuxième conduite 15 de forme tubulaire qui traverse la cloison inférieure 4.The combined device 1 also comprises a "low pressure" inlet 7 through which the refrigerant fluid from the evaporator is admitted inside the combined device 1. The "low pressure" inlet 7 takes the form of a "low pressure" inlet 7. first pipe 14 which passes through the upper wall 3. The combined device 1 finally has a "low pressure" outlet 8 through which the fluid Low pressure refrigerant is discharged from the combined device 1 to the compressor. This "low pressure" outlet 8 here also takes the form of a second pipe 15 of tubular shape which passes through the lower partition 4.

Le dispositif combiné 1 comprend l'enceinte 2, étanche vis-à-vis de l'extérieur, qui loge l'échangeur de chaleur 9, une zone de séparation 10 entre la phase gazeuse 16a et la phase liquide 16b du fluide réfrigérant sortant de l'évaporateur ainsi qu'une zone d'accumulation 11 du fluide réfrigérant à l'état liquide en provenance de l'évaporateur, ou plus particulièrement en provenance de la zone de séparation 10.The combined device 1 comprises the enclosure 2, sealed from the outside, which houses the heat exchanger 9, a separation zone 10 between the gas phase 16a and the liquid phase 16b of the refrigerant leaving the the evaporator and an accumulation zone 11 of the refrigerant fluid in the liquid state from the evaporator, or more particularly from the separation zone 10.

Ladite zone de séparation 10 présente préférentiellement une structure cyclonique dans le sens où la première conduite 14 est décalée par rapport à l'axe central primaire A de l'enceinte 2 du dispositif combiné 1 pour permettre une admission tangentielle du fluide réfrigérant en provenance de l'évaporateur à l'intérieur de ladite zone de séparation 10. L'admission tangentielle est mise en pratique au moyen d'une lumière 17 effectuée au travers de la paroi cylindrique de la première conduite 14. Ces dispositions visent à favoriser la séparation entre elles de ladite phase gazeuse 16a et de ladite phase liquide 16b. Une extrémité de la première conduite 14 située à l'intérieur du volume interne de l'enceinte 2 est obturée par une plaque 18. Cette dernière s'étend perpendiculairement à l'axe central primaire A de l'enceinte 2. Un faible jeu est maintenu entre la périphérie de cette plaque 18 et la paroi interne 19 de l'enceinte 2 de sorte à autoriser la descente par gravité de la phase liquide 16b du fluide réfrigérant 16 vers la zone d'accumulation 11.Said separation zone 10 preferably has a cyclonic structure in the sense that the first pipe 14 is offset relative to the primary central axis A of the enclosure 2 of the combined device 1 to allow a tangential admission of the refrigerant fluid from the The tangential inlet is put into practice by means of a lumen 17 made through the cylindrical wall of the first pipe 14. These provisions are intended to promote the separation between them. said gas phase 16a and said liquid phase 16b. One end of the first pipe 14 located inside the internal volume of the chamber 2 is closed by a plate 18. The latter extends perpendicular to the primary central axis A of the chamber 2. A weak game is maintained between the periphery of this plate 18 and the inner wall 19 of the chamber 2 so as to allow the descent by gravity of the liquid phase 16b of the refrigerant 16 to the accumulation zone 11.

Sous la plaque 18 débute la zone d'accumulation 11. Cette dernière est délimitée par une paroi inférieure 20 contre laquelle le fluide réfrigérant à l'état liquide en provenance de l'évaporateur vient s'accumuler par gravité. L'entrée « basse pression » 7 étant, en position d'utilisation du dispositif combiné 1 sur la boucle de climatisation et/ou en position de fonctionnement du dispositif combiné 1 seul, placée au-dessus de la paroi inférieure 20, le fluide réfrigérant 16 à l'état liquide chute naturellement par gravité depuis l'entrée « basse pression » 7 vers la paroi inférieure 20 pour finalement reposer contre cette dernière. La paroi inférieure 20 est montée étanche contre la paroi interne 19 de l'enceinte 2.Under the plate 18 begins the accumulation zone 11. The latter is delimited by a bottom wall 20 against which the coolant in the liquid state from the evaporator accumulates by gravity. The "low pressure" inlet 7 being, in the position of use of the combined device 1 on the air-conditioning loop and / or in the operating position of the combined device 1 alone, placed above the lower wall 20, the fluid refrigerant 16 in the liquid state falls naturally by gravity from the entry "low pressure" 7 to the bottom wall 20 to finally rest against it. The bottom wall 20 is sealed against the inner wall 19 of the enclosure 2.

La zone d'accumulation 11 est traversée par la deuxième canalisation 13 mais elle est traversée aussi par une conduite intermédiaire 21 dont une première extrémité 21a débouche dans la zone de séparation 10, quelques millimètres au dessus d'un plan défini par la plaque 18. Cette disposition permet de s'assurer que la phase liquide 16b du fluide réfrigérant ne rentre pas dans la conduite intermédiaire 21 de sorte à n'y laisser pénétrer que la phase gazeuse 16a du fluide réfrigérant 16. La conduite intermédiaire 21 traverse la paroi inférieure 20 et présente une deuxième extrémité 21b qui est en communication avec l'échangeur de chaleur 9. Dans une première configuration représentée à la figure 1, la conduite intermédiaire 21 est d'un diamètre supérieur à la deuxième canalisation 6 et est montée co-axiale par rapport à cette dernière. On constate donc qu'à la fois l'axe de la conduite intermédiaire 21 et l'axe de la deuxième canalisation 6 sont décalés par rapport à l'axe central primaire A de l'enceinte 2. Dans une seconde configuration non représentée, la conduite intermédiaire 21 est toujours d'un diamètre supérieur à la deuxième canalisation 6. En revanche, l'axe central de la conduite intermédiaire 21 est confondu ou co-axial à l'axe central primaire A. On comprend donc que la conduite intermédiaire est au centre du cylindre formé par l'enceinte 2. Dans cette configuration, l'échangeur de chaleur 9 est cependant toujours décalé comme requis par l'invention. Ainsi, la deuxième canalisation 6 est décalée dans la conduite intermédiaire 21, autrement dit l'axe central de la deuxième canalisation 6 n'est pas co-axial ou confondu avec l'axe central de la conduite intermédiaire 21, ce dernier étant confondu avec l'axe central primaire A.The accumulation zone 11 is crossed by the second pipe 13 but is also crossed by an intermediate pipe 21, a first end 21a opens into the separation zone 10, a few millimeters above a plane defined by the plate 18. This arrangement makes it possible to ensure that the liquid phase 16b of the cooling fluid does not enter the intermediate pipe 21 so as to let in only the gas phase 16a of the refrigerating fluid 16. The intermediate pipe 21 passes through the bottom wall 20 and has a second end 21b which is in communication with the heat exchanger 9. In a first configuration shown in FIG. figure 1 , the intermediate pipe 21 is of a larger diameter than the second pipe 6 and is mounted coaxially with respect to the latter. It can therefore be seen that both the axis of the intermediate duct 21 and the axis of the second duct 6 are offset with respect to the primary central axis A of the enclosure 2. In a second configuration, not shown, the intermediate pipe 21 is always of a larger diameter than the second pipe 6. In contrast, the central axis of the intermediate pipe 21 is coincidental or coaxial with the primary central axis A. It is therefore clear that the intermediate pipe is in the center of the cylinder formed by the enclosure 2. In this configuration, however, the heat exchanger 9 is always shifted as required by the invention. Thus, the second pipe 6 is shifted in the intermediate pipe 21, in other words the central axis of the second pipe 6 is not coaxial or coincides with the central axis of the intermediate pipe 21, the latter being confused with the primary central axis A.

On constate que le fluide réfrigérant 16 à l'état gazeux descend vers l'échangeur interne 9 alors que le fluide réfrigérant véhiculé dans la deuxième canalisation 6 monte en direction de la cloison supérieure 3. La circulation est dans cette partie du dispositif combiné dite « à contre-courant ».It can be seen that the refrigerant fluid 16 in the gaseous state descends towards the internal exchanger 9 while the fluid refrigerant conveyed in the second duct 6 rises towards the upper partition 3. The circulation is in this part of the combined device called "against the current".

La paroi inférieure 20 est préférentiellement perpendiculaire à l'axe central primaire A de l'enceinte 2 du dispositif combiné 1.The bottom wall 20 is preferably perpendicular to the primary central axis A of the chamber 2 of the combined device 1.

La zone de séparation 10 est contigüe à ladite cloison supérieure 3, en étant positionnée directement en dessous de cette dernière. Ainsi, la zone d'accumulation 11 est placée entre la zone de séparation 10 et la paroi inférieure 20, la plaque 18 étant interposée entre la zone de séparation 10 et la zone d'accumulation 11.The separation zone 10 is contiguous to said upper partition 3, being positioned directly below the latter. Thus, the accumulation zone 11 is placed between the separation zone 10 and the bottom wall 20, the plate 18 being interposed between the separation zone 10 and the accumulation zone 11.

La paroi inférieure 20, qui délimite en partie basse la zone d'accumulation 11, est disposée au-dessus de l'échangeur de chaleur 9. On notera que la zone d'accumulation 11 est disposée au dessus de l'échangeur de chaleur 9 selon l'axe de la gravité terrestre.The lower wall 20, which delimits the accumulation zone 11 in the lower part, is disposed above the heat exchanger 9. It will be noted that the accumulation zone 11 is disposed above the heat exchanger 9. along the axis of Earth's gravity.

La section de l'enceinte 2 et la section de l'échangeur de chaleur 9 sont toutes deux cylindriques, ce qui offre une parfaite coopération de forme.The section of the chamber 2 and the section of the heat exchanger 9 are both cylindrical, which offers perfect form cooperation.

La zone d'accumulation 11 surplombant ou placée au-dessus de l'échangeur de chaleur 9 est plus haute que l'échangeur de chaleur 9, selon l'axe central primaire A de l'enceinte 2.The accumulation zone 11 overhanging or placed above the heat exchanger 9 is higher than the heat exchanger 9, along the primary central axis A of the enclosure 2.

L'échangeur de chaleur 9 est constitué d'un premier tube plat 22 enroulé sur lui-même, préférentiellement autour d'un axe central secondaire B de l'échangeur de chaleur, cet axe central secondaire B étant distinct, c'est-à-dire non co-axial, de l'axe central primaire A de l'enceinte 2 du dispositif combiné 1. On notera que ce décalage d, formé par la distance qui sépare l'axe central primaire A de l'axe central secondaire B, permet de libérer une zone de la cloison inférieure 4 dans laquelle il est alors plus aisé de faire déboucher la deuxième canalisation 15 sans pour autant augmenter les dimensions externes de l'enceinte 2, et donc du dispositif combiné dans son ensemble. On notera que l'axe central primaire A et l'axe central secondaire B sont parallèles.The heat exchanger 9 consists of a first flat tube 22 wound on itself, preferably around a secondary central axis B of the heat exchanger, this secondary central axis B being distinct, that is to say non-coaxial, of the primary central axis A of the chamber 2 of the combined device 1. It will be noted that this offset d, formed by the distance between the primary central axis A of the secondary central axis B , allows to release an area of the lower partition 4 in which it is then easier to unclog the second pipe 15 without increasing the external dimensions of the chamber 2, and therefore the combined device as a whole. Note that the primary central axis A and the secondary central axis B are parallel.

Le premier tube plat 22 loge une multiplicité de canaux 23, autrement appelés micro-canaux, pour le passage du fluide réfrigérant à basse pression. Cette multiplicité de canaux 23 matérialise un premier chemin de circulation du fluide réfrigérant à basse pression. Ce premier chemin de circulation est en communication d'un côté avec une chambre d'admission 24 et de l'autre avec une chambre d'évacuation 25. La chambre d'admission 24 est délimitée par l'extrémité 21b de la conduite intermédiaire 21, par la première spire de premier tube plat 22 enroulé sur lui-même et par la cloison inférieure 4.The first flat tube 22 houses a multiplicity of channels 23, otherwise called micro-channels, for the passage of refrigerant fluid at low pressure. This multiplicity of channels 23 materializes a first flow path of the refrigerant fluid at low pressure. This first circulation path is in communication on one side with an intake chamber 24 and on the other with an evacuation chamber 25. The admission chamber 24 is delimited by the end 21b of the intermediate pipe 21 by the first turn of first flat tube 22 wound on itself and by the lower partition 4.

La chambre d'évacuation 25 est quant à elle délimitée par une spire périphérique de l'enroulement du premier tube plat 22 et/ou d'un troisième tube plat 27 (qui sera décrit ci-dessous plus en détails), définissant ainsi la paroi externe de l'échangeur de chaleur 9, par la paroi inférieure 20, par la cloison inférieure 4 et enfin par la paroi interne 19 de l'enceinte 2 au droit de l'échangeur de chaleur 9. La conséquence du décalage d entre l'axe central primaire A et l'axe central secondaire est la forme ovoïde que prend la section de la chambre d'évacuation.The evacuation chamber 25 is delimited by a peripheral winding of the winding of the first flat tube 22 and / or a third flat tube 27 (which will be described below in more detail), thus defining the wall external of the heat exchanger 9, by the bottom wall 20, by the lower partition 4 and finally by the inner wall 19 of the chamber 2 to the right of the heat exchanger 9. The consequence of the shift d between the primary central axis A and the secondary central axis is the ovoid shape that takes the section of the evacuation chamber.

Le premier chemin de circulation comprend un deuxième tube plat 26 muni d'une multiplicité de canaux 23. Ce deuxième tube plat 26 est enroulé avec le premier tube plat 22 et forme ensemble le premier chemin de circulation du fluide réfrigérant 16 à « basse pression ».The first circulation path comprises a second flat tube 26 provided with a plurality of channels 23. This second flat tube 26 is wound with the first flat tube 22 and together forms the first flow path of the refrigerant fluid 16 at "low pressure" .

L'échangeur de chaleur 9 comprend en outre un troisième tube plat 27 dont la multiplicité de canaux 23 délimite un deuxième chemin de circulation, ce dernier étant emprunté par le fluide réfrigérant en « haute pression ». Ce troisième tube plat 27 est d'un côté en communication avec la première canalisation 12 placée à la périphérie de l'échangeur de chaleur et de l'autre, en communication avec la deuxième canalisation 13 dont l'axe est aligné ou confondu sur l'axe central secondaire B de l'échangeur de chaleur 9. La première canalisation 12 est alors raccordée étanche (par exemple soudée, brasée, etc...) à l'extrémité du troisième tube plat 27 et la multiplicité de canaux 23 communique fluidiquement avec l'intérieur de la première canalisation 12. Il en est de même pour l'autre extrémité du troisième tube plat 27 qui communique avec la deuxième canalisation 13.The heat exchanger 9 further comprises a third flat tube 27 whose multiple channels 23 defines a second circulation path, the latter being borrowed by the refrigerant fluid "high pressure". This third flat tube 27 is on one side in communication with the first pipe 12 placed at the periphery of the heat exchanger and the other, in communication with the second pipe 13 whose axis is aligned or coincident with the secondary central axis B of the heat exchanger 9. The first pipe 12 is then sealingly connected (for example soldered, soldered, etc.) to the end of the third flat tube 27 and the multiplicity of channels 23 communicates fluidly with the interior of the first pipe 12. The same is true for the other end of the third flat tube 27 which communicates with the second pipe 13.

Dans le cas ou l'échangeur de chaleur 9 ne comprend pas de deuxième tube plat 26, il se trouve alors constitué d'un premier tube plat 22 et d'un troisième tube plat 27 enroulés conjointement pour former respectivement le premier chemin de circulation et le deuxième chemin de circulation.In the case where the heat exchanger 9 does not comprise a second flat tube 26, it then consists of a first flat tube 22 and a third flat tube 27 wound together to form respectively the first circulation path and the second road.

Dans une variante où le premier chemin de circulation est équipé d'un premier et d'un deuxième tubes plats 22, 26, le troisième tube plats 27 est alors intercalé, ou pris en sandwich, entre le premier et le deuxième tube plat.In a variant where the first circulation path is equipped with first and second flat tubes 22, 26, the third flat tube 27 is then inserted, or sandwiched, between the first and the second flat tube.

Dans ces cas, les trois tubes plat (premier, troisième et deuxième) sont enroulés autour de l'axe central secondaire B de l'échangeur de chaleur 9 de manière à ce que les spires respectives formées par lesdits tubes soient imbriquées l'une dans l'autre.In these cases, the three flat tubes (first, third and second) are wound around the secondary central axis B of the heat exchanger 9 so that the respective turns formed by said tubes are nested one in the other.

Un sous ensemble intermédiaire est constitué du premier tube plat 22 et du deuxième tube plat 26, du troisième tube plat 27, de la première canalisation 12 et de la deuxième canalisation 13 de sorte à former un ensemble unitaire. Cet ensemble est constitué dés lors que les éléments cités ci-dessus sont reliés de manière indémontrable sans détruire l'ensemble unitaire. Il s'agit avantageusement d'une liaison solide et étanche (assurée par exemple par brasage, soudage, etc...) qui permet de relier ensemble tous ces éléments.An intermediate subassembly consists of the first flat tube 22 and the second flat tube 26, the third flat tube 27, the first pipe 12 and the second pipe 13 so as to form a unitary assembly. This set is constituted as soon as the elements mentioned above are connected indemontrably without destroying the unitary unit. It is advantageously a solid and waterproof connection (provided for example by soldering, welding, etc ...) which allows to connect all these elements together.

La figure 2 illustre l'invention selon une vue en coupe perpendiculaire à l'axe central primaire A de l'enceinte 2. L'intersection entre le trait interrompu C-C et le trait interrompu F-F illustre l'axe central primaire A de l'enceinte 2, plus particulièrement, l'axe central du volume délimité par la paroi interne 19. L'épaisseur de l'enceinte 2 a été volontairement montrée en partie de sorte à ne pas surcharger la figure 2.The figure 2 illustrates the invention in a sectional view perpendicular to the primary central axis A of the enclosure 2. The intersection between the broken line CC and the broken line FF illustrates the primary central axis A of the enclosure 2, plus particularly, the central axis of the volume defined by the inner wall 19. The thickness of the chamber 2 has been voluntarily shown in part so as not to overload the figure 2 .

L'intersection entre le trait interrompu E-E et le trait interrompu F-F illustre l'axe central secondaire B de l'échangeur de chaleur 9. Le décalage d est la distance qui sépare l'axe central primaire A de l'enceinte 2 et l'axe central secondaire B de l'échangeur de chaleur 9, ce décalage étant d'une valeur minimum de un millimètre en dessous de laquelle le gain de place latéralement à l'échangeur de chaleur 9 devient marginal. La valeur maximale du décalage d est vingt-cinq millimètres car c'est la valeur maximum pour maintenir un compromis satisfaisant entre le diamètre extérieur de l'échangeur de chaleur et le diamètre extérieur de l'enceinte 2.The intersection between the broken line EE and the broken line FF illustrates the secondary central axis B of the heat exchanger 9. The offset d is the distance that separates the primary central axis A of the chamber 2 and the secondary central axis B of the heat exchanger 9, this offset being a minimum value of one millimeter below which the space saving laterally to the heat exchanger 9 becomes marginal. The maximum value of the offset d is twenty-five millimeters because it is the maximum value to maintain a satisfactory compromise between the outer diameter of the heat exchanger and the outside diameter of the enclosure 2.

Entre ces deux valeurs, l'invention libère une espace latéral à l'échangeur de chaleur 9, cette espace constituant alors la chambre d'évacuation 25. On constate que la deuxième conduite 15 peut être alors placée plus aisément sans nécessiter une augmentation du diamètre de l'enceinte 2, ceci à diamètre d'échangeur de chaleur 9, diamètre d'enceinte 2 et diamètre de deuxième conduite 15 constants.Between these two values, the invention releases a lateral space to the heat exchanger 9, this space then constituting the evacuation chamber 25. It can be seen that the second duct 15 can then be placed more easily without requiring an increase in the diameter. of the enclosure 2, this with heat exchanger diameter 9, enclosure diameter 2 and constant second pipe diameter 15.

Le troisième tube plat 27 est connecté par une extrémité à la première canalisation 12 située à la périphérie de l'échangeur de chaleur 9, alors que l'autre extrémité du troisième tube plat 27 est connectée à la deuxième canalisation 13 dont l'axe est confondu avec l'axe central secondaire B de l'échangeur de chaleur 9.The third flat tube 27 is connected at one end to the first pipe 12 located at the periphery of the heat exchanger 9, while the other end of the third flat tube 27 is connected to the second pipe 13 whose axis is coincides with the secondary central axis B of the heat exchanger 9.

Le premier tube plat 22 et le deuxième tube plat 26 captent le fluide réfrigérant à l'état gazeux et à « basse pression » dans la chambre d'admission via l'extrémité des tubes plats. Le fluide réfrigérant à « basse pression » chemine dans les premier et deuxième tubes plats 22, 26 à contre-courant de la circulation du fluide réfrigérant à « haute pression » qui chemine dans le troisième tube plat 27. Le fluide à « basse pression » sort par les extrémités des premier et deuxième tubes plats 22 et 26 pour se répandre dans la chambre d'évacuation 25 et sortir du dispositif combiné 1 via la deuxième conduite 15.The first flat tube 22 and the second flat tube 26 capture the refrigerant fluid in the gaseous state and at "low pressure" in the intake chamber via the end of the flat tubes. The refrigerant fluid "low pressure" travels in the first and second flat tubes 22, 26 against the current circulation of the "high pressure" refrigerant which travels in the third flat tube 27. The fluid "low pressure" out through the ends of the first and second flat tubes 22 and 26 to spread in the discharge chamber 25 and out of the combined device 1 via the second pipe 15.

Les dispositions décrites ci-dessus sont telles que le dispositif combiné 1 est susceptible d'être relié fluidiquement à la boucle de climatisation par l'intermédiaire des cloisons supérieure 3 et inférieure 4. Il en résulte que les liaisons entre le dispositif combiné 1 et d'une part le compresseur et d'autre part le refroidisseur de gaz sont réalisées par l'intermédiaire de conduites branchées sur la cloison inférieure 4 tandis que les liaisons entre le dispositif combiné 1 et d'une part l'évaporateur et d'autre part l'organe de détente sont réalisées par l'intermédiaire de conduites branchées sur la cloison supérieure 3. De telles dispositions facilitent l'intégration du dispositif combiné 1 sur la boucle de climatisation et par conséquent son intégration dans le compartiment moteur du véhicule automobile.The arrangements described above are such that the combined device 1 is capable of being fluidly connected to the air conditioning loop via the upper and lower partitions 4. As a result, the connections between the combined device 1 and on the one hand the compressor and on the other hand the gas cooler are made via conduits connected to the lower partition 4 while the connections between the combined device 1 and on the one hand the evaporator and other the detent member is formed by means of conduits connected to the upper partition 3. Such arrangements facilitate the integration of the combined device 1 on the air conditioning loop and therefore its integration into the engine compartment of the motor vehicle.

Les termes « au dessus », « en dessous », « surplomb », « inférieur » et « supérieur » sont à comprendre en position d'utilisation du dispositif combiné 1. Cette position d'utilisation peut aisément s'apprécier de par l'installation du dispositif combiné 1 selon l'invention dans la boucle de climatisation du véhicule. Cette position d'utilisation peut néanmoins tout aussi aisément s'apprécier avec le dispositif combiné 1 seul, c'est-à-dire indépendamment de son installation dans la boucle de climatisation, pour autant que son fonctionnement apparaisse réaliste.The terms "above", "below", "overhang", "lower" and "upper" are to be understood in the position of use of the combined device 1. This position of use can easily be appreciated by the installation of the combined device 1 according to the invention in the air conditioning loop of the vehicle. This position of use can nevertheless just as easily appreciate with the combined device 1 alone, that is to say independently of its installation in the air conditioning loop, as long as its operation appears realistic.

Claims (15)

  1. Combined device (1) comprising a housing (2) accommodating at least one heat exchanger (9) and an accumulation area (11), said housing (2) extends along a primary central axis (A) and said heat exchanger (9) extends along a secondary central axis (B), the primary central axis (A) being offset relative to the secondary central axis (B), characterized in that it comprises an evacuation chamber (25) located at least partially around the heat exchanger (9), this evacuation chamber (25) being at least delimited by one external wall (22, 27) of the heat exchanger (9) and by an internal wall (19) of the housing (2), a section of the evacuation chamber (25) being of ovoid form.
  2. Combined device according to Claim 1, wherein the offset (d) between the primary central axis (A) and the secondary central axis (B) is between one and twenty-five millimetres.
  3. Combined device according to one of Claims 1 or 2, wherein the housing (2) and the heat exchanger (9) are of cylindrical form.
  4. Combined device according to any one of Claims 1 to 3, wherein the heat exchanger (9) comprises at least a first flat tube (22) wound on itself around the secondary central axis (B).
  5. Combined device according to Claim 4, wherein the first flat tube (22) comprises a multiplicity of channels (23).
  6. Combined device according to one of Claims 4 or 5, wherein the heat exchanger (9) comprises an intake chamber (24) that extends to the centre of the first flat tube (22) wound on itself.
  7. Combined device according to Claim 6, wherein the heat exchanger comprises a first circulation path delimited by the multiplicity of channels (23) of the first flat tube (22), this first circulation path being in communication, via a first end of the flat tube (22), with the intake chamber (24) and in communication with the evacuation chamber (25) via a second end of the first flat tube (22).
  8. Combined device according to Claim 7, wherein the first circulation path is delimited by a second flat tube (26) wound with the first flat tube (22).
  9. Combined device according to Claim 8, wherein the heat exchanger (9) comprises a second circulation path delimited by a multiplicity of channels (23) of a third flat tube (27) wound with the first flat tube (22).
  10. Combined device according to Claim 9, characterized in that the second circulation path is, first, in communication with a first pipe (12) placed at the periphery of the heat exchanger (9) and, second, in communication with a second pipe (13), the axis of which is aligned on the secondary central axis (B).
  11. Combined device according to Claim 10, wherein the first flat tube (22) and the second flat tube (26), the third flat tube (27), the first pipe (12) and the second pipe (13) form a unitary whole.
  12. Combined device according to any one of the preceding claims, wherein the housing (2) is closed by an upper partition (3) and a lower partition (4) and the accumulation area (11) comprises a lower wall (20) arranged at the meeting point between the heat exchanger (9) and said accumulation area (11).
  13. Combined device according to Claim 12, which comprises a first conduit (14) that traverses the upper partition (3) and opens out into a separation area (10) located in the housing (2) and above the accumulation area (11).
  14. Combined device according to Claim 13, which comprises a second conduit (15) that traverses the lower partition (4) and opens out into the evacuation chamber (25).
  15. Air-conditioning loop incorporating a combined device according to any one of the preceding claims.
EP09179140.0A 2008-12-22 2009-12-14 Device comprising an internal heat exchanger and an accumulator Active EP2199709B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0807422A FR2940418B1 (en) 2008-12-22 2008-12-22 COMBINED DEVICE COMPRISING AN INTERNAL HEAT EXCHANGER AND AN ACCUMULATOR

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EP2199709A2 EP2199709A2 (en) 2010-06-23
EP2199709A3 EP2199709A3 (en) 2012-01-04
EP2199709B1 true EP2199709B1 (en) 2016-11-16

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US (1) US20100155012A1 (en)
EP (1) EP2199709B1 (en)
JP (1) JP5497419B2 (en)
CN (1) CN101799232B (en)
ES (1) ES2615510T3 (en)
FR (1) FR2940418B1 (en)

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FR2940419B1 (en) * 2008-12-22 2010-12-31 Valeo Systemes Thermiques COMBINED DEVICE COMPRISING AN INTERNAL HEAT EXCHANGER AND AN ACCUMULATOR, AND PROVIDED WITH A MULTIFUNCTIONAL INTERNAL COMPONENT
FR2940420B1 (en) * 2008-12-22 2010-12-31 Valeo Systemes Thermiques COMBINED DEVICE COMPRISING AN INTERNAL HEAT EXCHANGER AND AN ACCUMULATOR COMPRISING A CLIMATEING MOUTH
GB201411563D0 (en) * 2014-06-30 2014-08-13 Eaton Ind Ip Gmbh & Co Kg Accumulator for an air conditioning system
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CN114046618A (en) * 2021-11-09 2022-02-15 天津双昊车用空调有限公司 Gas-liquid separator with auxiliary heating function

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JP5497419B2 (en) 2014-05-21
ES2615510T3 (en) 2017-06-07
US20100155012A1 (en) 2010-06-24
CN101799232B (en) 2014-08-20
CN101799232A (en) 2010-08-11
EP2199709A3 (en) 2012-01-04
FR2940418B1 (en) 2012-12-07
JP2010169387A (en) 2010-08-05
FR2940418A1 (en) 2010-06-25
EP2199709A2 (en) 2010-06-23

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