EP4551874A1 - Module de distribution de fluide réfrigérant - Google Patents
Module de distribution de fluide réfrigérantInfo
- Publication number
- EP4551874A1 EP4551874A1 EP23734005.4A EP23734005A EP4551874A1 EP 4551874 A1 EP4551874 A1 EP 4551874A1 EP 23734005 A EP23734005 A EP 23734005A EP 4551874 A1 EP4551874 A1 EP 4551874A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- distribution module
- refrigerant
- heat exchanger
- module
- 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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
- B60H1/32281—Cooling devices using compression characterised by refrigerant circuit configurations comprising a single secondary circuit, e.g. at evaporator or condenser side
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
- B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
Definitions
- the present invention relates to the field of thermal conditioning systems. These systems can in particular equip a motor vehicle. Such systems make it possible to achieve thermal regulation of different components of the vehicle, such as for example 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 within different heat exchangers making it possible to selectively ensure heating or cooling of different parts of the vehicle.
- Thermal conditioning systems use a refrigerant circuit comprising a main refrigerant circulation loop and multiple branch branches.
- Various heat exchangers and various refrigerant expansion devices make it possible to control heat exchanges within the thermal conditioning system.
- a set of valves makes it possible to achieve different combinations of circulation of the refrigerant fluid in the refrigerant fluid circuit and make it possible to ensure different operating modes, that is to say to select which exchangers participate in the heat exchanges, and the direction of these thermal exchanges.
- Each operating mode can be selected based on the thermal conditions encountered by the vehicle and its occupants, as well as based on driving conditions. It is thus possible to achieve different operating modes, such as for example a mode of heating the passenger compartment, a mode of cooling the passenger compartment, a mode of dehumidifying the passenger compartment or even a mode of cooling an element. of the vehicle's traction chain.
- a low-pressure refrigerant fluid distribution module comprising:
- the first channel comprising a one-way valve disposed between the first connection zone and the second connection zone, the one-way valve being configured to allow circulation of refrigerant fluid from the first connection zone to the second connection zone, the one-way valve also being configured to prohibit circulation of refrigerant fluid from the second connection zone to the first connection zone .
- the distribution module makes it possible to group the different flows of refrigerant gas at low pressure in order to pass them to another organ, such as for example a refrigerant compression device.
- the same module can be used for multiple configurations, which allows standardization.
- the first refrigerant circulation channel, the second refrigerant circulation channel and the third refrigerant circulation channel are formed by an internal recess of a body of the module. [9] The number of hoses and fittings necessary to ensure the circulation of the refrigerant fluid is reduced, since the connections between channels and the channels themselves are provided directly by the body of the distribution module.
- the body of the module comprises a set of flat exterior surfaces.
- the body of the module is of substantially parallelepiped shape.
- the module is thus compact, which facilitates its integration.
- the first input is arranged on a flat face of the body of the module.
- the second input is arranged on a flat face of the body of the module.
- the third input is arranged on a flat face of the body of the module.
- the outlet is arranged on a flat face of the body of the module.
- the first input and the output are arranged on the same flat face of the body of the module.
- the second canal is rectilinear.
- the third channel is rectilinear.
- the first channel comprises a succession of rectilinear portions.
- Each channel can thus be obtained by drilling, which allows inexpensive manufacturing of the module.
- the first channel comprises a first portion extending between the first input and the first connection zone; the first portion of the first channel and the second channel extend along intersecting axes.
- the first portion of the first channel and the second channel extend along perpendicular axes.
- the first channel comprises a second portion extending between the first connection zone and the unidirectional valve.
- the second portion of the first channel and the first portion of the first channel extend along perpendicular axes.
- the one-way valve is arranged in a housing opening onto one face of the body of the distribution module.
- the refrigerant distribution module thus integrates a one-way valve, such as a non-return valve, in a simple manner.
- the housing of the one-way valve and the second inlet are arranged on opposite faces of the body of the distribution module.
- the one-way valve comprises a flat portion flush with one face of the distribution module.
- the housing of the one-way valve is cylindrical.
- the housing of the one-way valve extends along an axis coaxial with the axis of the second circulation channel.
- the first channel comprises a third portion extending between the one-way valve and the second connection zone.
- the third portion of the first channel and the third channel extend along perpendicular axes.
- the second channel and the third channel extend along perpendicular axes.
- the first channel comprises a fourth portion extending between the second connection zone and the output; the fourth portion of the first channel and the third portion of the first channel are coaxial.
- the first portion of the first channel and the third portion of the first channel extend along parallel axes.
- the body of the distribution module is formed from an assembly of metal blocks.
- the body of the distribution module is thus robust, inexpensive and has good sealing.
- the metal blocks are, for example, molded.
- Metal blocks are, for example, extruded.
- the metal blocks are for example made of aluminum.
- the body of the distribution module can be in one piece.
- the distribution module includes a flange for attaching the module to a support.
- the distribution module comprises a first device for maintaining a first refrigerant inlet tube in the first inlet.
- the distribution module includes a second device for holding a second refrigerant outlet tube from the outlet.
- the distribution module includes a third device for maintaining a third refrigerant inlet tube in the third inlet.
- the disclosure also concerns a thermal conditioning system for a motor vehicle, comprising:
- a third heat exchanger configured to operate selectively as an evaporator or condenser
- the first heat exchanger is configured to exchange heat with a flow of air inside the vehicle cabin.
- the first heat exchanger is configured to exchange heat with a heat transfer liquid of a heat transfer liquid circuit, the heat transfer liquid circuit comprising a fifth heat exchanger configured to exchange heat with a flow interior air in the vehicle passenger compartment.
- the second heat exchanger is configured to exchange heat with a flow of air inside the passenger compartment of the vehicle.
- the third heat exchanger is configured to exchange heat with an air flow outside the vehicle passenger compartment.
- the fourth heat exchanger is configured to be thermally coupled to an element of an electric powertrain of a vehicle.
- the element of the electric traction chain may include an electrical energy storage battery.
- the element of the electric traction chain may comprise an electronic module for controlling an electric traction motor of the vehicle.
- the element of the electric traction chain may comprise an electric vehicle traction motor.
- the thermal conditioning system comprises a refrigerant fluid circuit comprising:
- a first branch branch fluidly connecting a first connection point located on the main loop downstream of the first exchanger and upstream of the first expansion device to a second connection point located on the main loop downstream of the second heat exchanger and upstream of the device compression, the first branch branch comprising a second expansion device arranged upstream of the third heat exchanger,
- a second branch branch fluidly connecting a third connection point arranged on the main loop downstream of the first exchanger and upstream of the first connection point to a fourth connection point arranged on the main loop downstream of the second connection point and upstream of the compression device, the second branch branch comprising a third expansion device disposed upstream of the fourth heat exchanger.
- the main refrigerant circulation loop comprises an accumulation device arranged downstream of the first heat exchanger and upstream of the third connection point.
- the first branch branch comprises an internal heat exchanger, the internal heat exchanger comprising a first heat exchange section arranged upstream of the second expansion device and a second heat exchange section arranged downstream of the third heat exchanger, the internal heat exchanger being configured to allow heat exchange between the refrigerant in the first heat exchange section and the refrigerant in the second section heat exchange.
- FIG. 1 is a schematic view of a first embodiment of a thermal conditioning system integrating a refrigerant distribution module according to the invention
- FIG. 2 is a schematic view of a second embodiment of a thermal conditioning system integrating a distribution module according to the invention
- FIG. 3 is a perspective view of the refrigerant distribution module shown schematically in Figures 1 and 2,
- FIG. 4 is another perspective view of the refrigerant distribution module shown schematically in Figures 1 and 2, seen from another angle of view,
- FIG. 5 is a sectional view of the distribution module of Figures 3 and 4,
- FIG. 6 is another sectional view of the distribution module of Figures 3 and 4,
- FIG. 7 is a schematic view illustrating a mode of operation of the thermal conditioning system of Figure 1.
- 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.
- the term “a first element is upstream of a second element” means that the refrigerant fluid successively travels through the first element, then the second element, without passing through the compression device. In other words, the refrigerant fluid leaves the compression device, possibly passes through one or more elements, then passes through the first element, then the second element, then returns to the compression device, possibly after passing through other elements.
- the expansion devices used can be an electronic expansion valve, a thermostatic expansion valve, or a calibrated orifice.
- the passage section allowing the fluid to pass refrigerant can be continuously adjusted between a closed position and a maximum open position.
- an electronic controller controls an electric motor which moves a movable shutter controlling the passage section offered to the refrigerant fluid.
- the thermal conditioning system 100 which will be described can be fitted to a motor vehicle.
- An electronic control unit receives information from various sensors measuring in particular the characteristics of the refrigerant fluid.
- the electronic control unit also receives instructions from the vehicle occupants, for example the desired temperature inside the passenger compartment.
- the electronic control unit implements control laws allowing the control of the different actuators, in order to ensure the control of the thermal conditioning system 100 so as to ensure the instructions received.
- a compression device 7 makes it possible to circulate a refrigerant fluid in a closed circuit 10 for circulating refrigerant fluid.
- the compression device 7 can be an electric compressor, that is to say a compressor whose moving parts are driven by an electric motor.
- the compression device 7 comprises a suction side of the low-pressure refrigerant fluid, also called inlet 7a of the compression device 7, and a discharge side of the high-pressure refrigerant fluid, also called outlet 7b of the compression device 7.
- the moving parts internals of the compressor 7 pass the refrigerant fluid from a low pressure on the inlet side 7a to a high pressure on the outlet side 7b. After expansion in one or more expansion devices, the refrigerant fluid returns to inlet 7a of compressor 7 and begins a new thermodynamic cycle.
- Compressor 7 here is a compressor having exactly one inlet and one outlet of refrigerant fluid.
- connection point allows the refrigerant fluid to pass into one or other of the circuit portions joining at this connection point.
- the distribution of the refrigerant fluid between the circuit portions joining at a connection point is done by varying the degree of opening of the expansion devices, and the position of the stop valves arranged on each of the branches connected to this point.
- each connection point is a means of redirecting the refrigerant fluid arriving at this connection point.
- the refrigerant fluid used by the refrigerant circuit is here a chemical fluid such as R1234yf.
- Other refrigerant fluids could be used, such as for example R 134a, R744, or even R290.
- interior air flow we mean a flow of air destined for the passenger compartment of the motor vehicle. This interior air flow can circulate in a heating, ventilation and air conditioning installation, often referred to by the English term “HVAC” meaning “Heating, Ventilating and Air Conditioning”. This installation has not been shown in the various figures.
- a motor-fan unit not shown, can be activated in order to increase the flow rate of the interior air flow Fi if necessary.
- external air flow Fe we mean an air flow which is not intended for the passenger compartment of the vehicle. In other words, the air flow Fe remains outside the vehicle cabin.
- Another motor-fan group also not shown, can be activated in order to increase, if necessary, the flow rate of the exterior air flow Fe.
- FIG. 1 shows a schematic diagram of a thermal conditioning system 100 for a motor vehicle, according to a first embodiment.
- This thermal conditioning system 100 has a refrigerant circulation circuit 10 making it possible to circulate a controlled flow of refrigerant fluid under pressure in various heat exchangers. In normal use, the refrigerant circulation circuit is tight and forms a closed circuit.
- the thermal conditioning system 100 integrates a refrigerant distribution module 50.
- the thermal conditioning system 100 for a motor vehicle comprises:
- a compression device 7 comprising at least one input 7a and one output 7b,
- first heat exchanger 1 configured to operate as a condenser
- a third heat exchanger 3 configured to operate selectively as an evaporator or condenser
- An outlet 2b of the second heat exchanger 2 is connected to the first input El of the distribution module 50
- an outlet 3b of the third heat exchanger 3 is connected to the second input E2 of the distribution module 50
- an outlet 4b of the fourth exchanger heat pump 4 is connected to the third input E3 of the distribution module 50
- the output S of the distribution module 50 is connected to the input 7a of the compression device 7.
- the first heat exchanger 1 is configured to exchange heat with an interior air flow Fi in the passenger compartment of the vehicle.
- the interior air flow Fi can thus be heated directly, that is to say the heat of condensation of the refrigerant fluid is transferred directly to the interior air flow Fi when the latter passes through the first exchanger 1.
- the first heat exchanger 1 is arranged in the heating, ventilation and air conditioning installation of the vehicle, not shown in the figures.
- the second heat exchanger 2 is configured to exchange heat with an interior air flow Fi in the passenger compartment of the vehicle.
- the second heat exchanger 2 is also arranged in the heating, ventilation and air conditioning installation of the vehicle.
- the second exchanger 2 cools the interior air flow Fi in order to regulate the temperature of the passenger compartment.
- the second exchanger 2 is arranged downstream of the first exchanger 1 in a direction of flow of the interior air flow in the heating, ventilation and air conditioning installation of the vehicle.
- the third heat exchanger 3 is configured to exchange heat with an exterior air flow Fe to the passenger compartment of the vehicle.
- the third exchanger 3 can selectively, depending on the operating modes of the thermal conditioning system 100, dissipate heat in the exterior air flow Fe, when the third exchanger 3 operates as a condenser, or absorb heat from the flow of air. outside air Fe, when the third exchanger 3 operates as an evaporator.
- the third exchanger 3 can for example be placed in the front face of the vehicle, and receives the air flow generated by the forward speed of the vehicle.
- the fourth heat exchanger 4 is configured to be thermally coupled to an element 6 of an electric traction chain of the vehicle.
- Element 6 of the electric traction chain may include an electrical energy storage battery.
- the fourth exchanger 4 makes it possible to absorb heat from element 6.
- Thermal coupling can be done by a heat transfer liquid circulating in a circuit 30.
- the heat transfer liquid of circuit 30 can for example be a mixture of water and glycol. The heat transfer liquid exchanges heat with the refrigerant fluid at the fourth exchanger 4, and exchanges heat with element 6 of the traction chain.
- Element 6 of the electric traction chain may comprise an electronic module for controlling an electric vehicle traction motor.
- Element 6 of the electric traction chain may also include an electric vehicle traction motor.
- the first heat exchanger 1 is configured to exchange heat with a heat transfer liquid of a heat transfer liquid circuit 20, the heat transfer liquid circuit 20 comprising a fifth heat exchanger 5 configured to exchange heat with an interior air flow Fi in the passenger compartment of the vehicle.
- the interior air flow Fi is heated indirectly, since the heat of condensation of the refrigerant fluid is first transferred to the heat transfer liquid of circuit 20, then the heat of the heat transfer liquid is transferred to the interior air flow Fi at the level of the fifth exchanger 5.
- the heat transfer liquid circuit 20 comprises a pump 28 capable of circulating the heat transfer liquid in the circuit 20.
- the fifth exchanger 5 is arranged in the heating, ventilation and air conditioning downstream of the second exchanger 2 according to the direction of flow of the interior air flow Fi.
- the role of the other exchangers is the same as in the first embodiment.
- the heat transfer liquid circuit 20 for passenger compartment heating and the liquid circuit 30 for thermal coupling with element 6 of the transmission chain are disjoint, that is to say they do not communicate.
- the thermal conditioning system 100 comprises a refrigerant fluid circuit 10 comprising:
- a main loop A for circulating refrigerant fluid comprising successively in one direction of circulation of the refrigerant fluid:
- a first branch branch B fluidly connecting a first connection point 21 located on the main loop A downstream of the first exchanger 1 and upstream of the first expansion device 31 to a second connection point 22 located on the main loop A in downstream of the second heat exchanger 2 and upstream of the compression device 7, the first branch B comprising a second expansion device 32 disposed upstream of the third heat exchanger 3,
- a second branch C fluidly connecting a third point of connection 23 arranged on the main loop A downstream of the first exchanger 1 and upstream of the first connection point 21 to a fourth connection point 24 arranged on the main loop A downstream of the second connection point 22 and upstream of the connection device compression 7, the second branch C comprising a third expansion device 33 disposed upstream of the fourth heat exchanger 4.
- the main refrigerant fluid circulation loop A comprises an accumulation device 9 disposed downstream of the first heat exchanger 1 and upstream of the third connection point 23.
- the accumulation device 9 is arranged on the main loop A between the outlet of the first exchanger 1 and the third connection point 23.
- the fourth connection point 24 is arranged on the main loop A between the second connection point 22 and the inlet 7a of the compression device 7.
- the distribution module 50 comprises part of the main loop A, the first branch branch B, and the second branch branch C.
- the low-pressure refrigerant fluid distribution module 50 comprises:
- the first channel 11 comprises a unidirectional valve 17 arranged between the first zone of connection Cl and the second connection zone C2.
- the one-way valve 17 is configured to allow circulation of refrigerant fluid from the first connection zone C1 to the second connection zone C2.
- the one-way valve 17 is also configured to prevent circulation of refrigerant fluid from the second connection zone C2 to the first connection zone CL
- the distribution module 50 makes it possible to group the different flows of refrigerant gas at low pressure in order to pass them towards the inlet 7a of the compression device 7.
- the same module can be used for multiple configurations, which allows standardization.
- the geometry of the distribution module can be optimized in order to reduce pressure losses, and thus improve the thermodynamic performance of the thermal conditioning system on which the distribution module is integrated.
- Each channel 11, 12, 13 of the refrigerant distribution module 50 is a refrigerant circulation channel.
- Each channel 11, 12, 13 is generally tubular in shape.
- the refrigerant fluid circulating in the distribution module 50 is in contact with the surface of the different channels 11, 12, 13.
- Each channel 11, 12, 13 has exactly one inlet and one outlet of refrigerant fluid. In other words, a channel is not branched. Circuit portions arranged in parallel are formed by at least two distinct channels.
- connection zone Cl, C2 establishes fluid communication between two channels joining at this connection zone.
- a connection zone is delimited by the intersection between two channels. We speak of a connection zone and not of a connection point because the fluid circulation channels are physically volumetric elements.
- Each connection zone forms a tap from one channel to another channel.
- the refrigerant fluid circulating in the distribution module 50 is a low pressure refrigerant fluid.
- low pressure we mean that the refrigerant fluid delivered by the compressor 7 has undergone expansion in an expansion device before joining the distribution module 50.
- the pressure of the refrigerant fluid at the level of the inlets El, E2, E3 is for example less than 5 Bar.
- the first channel 11 for circulating refrigerant fluid, the second channel 12 for circulating refrigerant fluid and the third channel 13 for circulating refrigerant fluid are formed by an internal recess of a body 15 of the module 50.
- Each channel 11 , 12, 13 is formed by an internal recess of the body 15 of the module 50.
- Each channel 11, 12, 13 is entirely contained inside the refrigerant distribution module 50.
- Figure 3 and Figure 4 are perspective views of an exemplary embodiment of a refrigerant distribution module 50. The viewing angle differs between Figure 3 and Figure 4.
- the body 15 of the module 50 comprises a set of flat exterior surfaces. The fixing of brackets for holding the tubes or hoses bringing the refrigerant fluid to the inlets of the module, or causing the refrigerant fluid to leave the module, is thus facilitated. [102] In the example shown, the body 15 of the module 50 is of substantially parallelepiped shape. The module is thus compact, which facilitates its integration.
- the module 50 includes three refrigerant fluid inlets El, E2, E3 and a single refrigerant fluid outlet S.
- the first input El is arranged on a flat face 41 of the body 15 of the module 50.
- the second input E2 is arranged on a flat face 42 of the body 15 of the module 50.
- the third input E3 is arranged on a flat face 43 of the body 15 of the module 50.
- the output S is arranged on a flat face of the body 15 of the module 50.
- the first input El and the output S are arranged on the same flat face 41 of the body 15 of the module 50.
- Figure 5 and Figure 6 are sectional views of the distribution module 50, on which the refrigerant circulation channels are visible.
- the second channel 12 is rectilinear.
- the third channel 13 is rectilinear.
- the first channel 11 comprises a succession of rectilinear portions. Each channel can thus be obtained by drilling, which allows inexpensive manufacturing of the module.
- the first channel 11 comprises a first portion 11-1 extending between the first input El and the first connection zone CL
- the first portion 11-1 of the first channel 11 and the second channel 12 extend along axes secants.
- the first portion 11-1 of the first channel 11 and the second channel 12 extend along perpendicular axes.
- the sign DI 1-1 illustrates the axis of the first portion 11-1 of the first channel 11
- the sign D12 illustrates the axis of the second channel 12.
- the first channel 11 comprises a second portion 11-2 extending between the first connection zone Cl and the one-way valve 17.
- the second portion 11-2 of the first channel 11 and the first portion 11-1 of the first channel 11 extend along perpendicular axes.
- the second portion 11-2 of the first channel 11 and the second channel 12 are coaxial.
- the axis of the second portion 11-2 is illustrated by the sign DI 1-2.
- the one-way valve 17 is arranged in a housing 14 opening onto a face 44 of the body 15 of the distribution module 50.
- the refrigerant distribution module thus integrates a one-way valve, such as a non-return valve, in a simple manner .
- the housing 14 of the one-way valve 17 and the second inlet E2 are arranged on opposite faces 44, 42 of the body 15 of the module distribution 50.
- the different components of the module are thus distributed around the external surface of the module.
- the one-way valve 17 comprises a flat portion 18 flush with a face 44 of the distribution module 50.
- the one-way valve 17 also comprises a stud 19 projecting from the flat portion 18.
- the stud 19 allows the unidirectional valve 17 to be gripped and allows the one-way valve 17 to be extracted from its housing, in the event of possible dismantling.
- Housing 14 of one-way valve 17 is cylindrical.
- the housing 14 of the unidirectional valve 17 extends along an axis D14 coaxial with the axis D12 of the second circulation channel 12.
- the housing 14 of the one-way valve 17, the second channel 12 and part of the first channel 11 can thus be made by drilling along the same axis, which facilitates the production of the module.
- the first channel 11 comprises a third portion 11-3 extending between the one-way valve 17 and the second connection zone C2.
- the third portion 11-3 of the first channel 11 and the third channel 13 extend along perpendicular axes.
- the second channel 12 and the third channel 13 extend along perpendicular axes.
- the axis of the third channel 13 is illustrated by the sign D13 in Figures 5 and 6.
- the first portion 11-1 of the first channel 11, the second channel 12 and the third channel 13 extend along perpendicular axes in pairs.
- the first channel 11 comprises a fourth portion 11-4 extending between the second connection zone C2 and the outlet S; the fourth portion 11-4 of the first channel 11 and the third portion 11-3 of the first channel 11 are coaxial.
- the sign DI 1-4 illustrates the axis of the fourth portion 11-4 of the first channel 11.
- the first portion 11-1 of the first channel 11 and the third portion 11-3 of the first channel 11 extend along parallel axes. These parallel axes are illustrated by the signs DI 1-1 and DI 1-4.
- the body 15 of the distribution module 50 is here formed of an assembly of metal blocks.
- the body of the distribution module is thus robust, inexpensive and has good sealing.
- Metal blocks can be cast. Metal blocks can also be extradited. The metal blocks are for example made of aluminum.
- the body 15 of the distribution module 50 can be in one piece.
- the distribution module 50 includes a flange 49 for fixing the module to a support.
- the distribution module 50 comprises a first device 45 for holding a first tube for inlet of refrigerant fluid into the first inlet EL.
- the distribution module 50 also comprises a second device 46 for holding a second tube of refrigerant outlet from outlet S.
- the distribution module 50 comprises a third device for maintaining a third refrigerant fluid inlet tube in the third inlet E3, not shown in the figures.
- each holding device 45, 46 comprises a stud and a nut.
- each holding device may comprise a threaded orifice and a fixing screw.
- the first branch branch B comprises an internal heat exchanger 25, the internal heat exchanger 25 comprising a first exchange section thermal 25a disposed upstream of the second expansion device 32 and a second heat exchange section 25b disposed downstream of the third heat exchanger 3, the internal heat exchanger 25 being configured to allow heat exchange between the refrigerant fluid in the first heat exchange section 25a and the refrigerant in the second heat exchange section 25b.
- the internal exchanger 25 makes it possible to improve the performance of the thermal conditioning system 100.
- Figure 7 illustrates the operation of the thermal conditioning system 100 in a so-called traction chain energy recovery operating mode.
- a flow rate Q of refrigerant fluid circulates in the compression device 7 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it condenses by supplying heat to the interior air flow Fi, then into the accumulation device 9.
- the refrigerant fluid is directed into the second branch of diversion C, because the first regulator 31 and the second regulator 32 are in the closed position and block the circulation of refrigerant fluid.
- the refrigerant fluid circulating in the second branch C circulates in the first expansion device 31 where it undergoes expansion and passes at low pressure, then in the fourth exchanger 4 where it receives heat from element 6 of the chain traction, and enters the distribution module 50 via the third input E3 and joins the second connection zone C2.
- the one-way valve 17 prevents a circulation of refrigerant fluid from the second connection zone C2 towards the first connection zone Cl, that is to say from the fourth connection point 24 towards the second connection point 22.
- migration of the refrigerant fluid towards the third exchanger 3 and the second exchanger 2 is avoided.
- the refrigerant contained in each of the second and third exchangers can be produced.
- a progressive migration of the refrigerant fluid towards the second and third exchangers could occur, which would reduce the exchange capacities of the thermal conditioning system.
- the presence of the one-way valve makes it possible to operate the thermal conditioning system in this operating mode in which only the fourth heat exchanger 4 is active, the second and the third exchanger then being inactive.
- the distribution module described can also be implemented in thermal conditioning systems in which the role of the first exchanger 1, the second exchanger 2 and the third exchanger 3 is different.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Air-Conditioning For Vehicles (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2206943A FR3137745B1 (fr) | 2022-07-07 | 2022-07-07 | Module de distribution de fluide réfrigérant |
| PCT/EP2023/067046 WO2024008476A1 (fr) | 2022-07-07 | 2023-06-22 | Module de distribution de fluide réfrigérant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4551874A1 true EP4551874A1 (fr) | 2025-05-14 |
Family
ID=83188848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23734005.4A Pending EP4551874A1 (fr) | 2022-07-07 | 2023-06-22 | Module de distribution de fluide réfrigérant |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4551874A1 (fr) |
| CN (1) | CN119630929A (fr) |
| FR (1) | FR3137745B1 (fr) |
| WO (1) | WO2024008476A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2982355A1 (fr) * | 2011-11-03 | 2013-05-10 | Valeo Systemes Thermiques | Boucle de climatisation pour une installation de chauffage, ventilation et/ou climatisation |
| CN109690209B (zh) * | 2016-09-12 | 2021-05-07 | 三菱电机株式会社 | 空调装置 |
| DE102018108013B4 (de) * | 2018-04-05 | 2021-05-06 | Hanon Systems | Vorrichtungen zum Regeln eines Durchflusses und Verteilen eines Fluids in einem Fluidkreislauf |
-
2022
- 2022-07-07 FR FR2206943A patent/FR3137745B1/fr active Active
-
2023
- 2023-06-22 EP EP23734005.4A patent/EP4551874A1/fr active Pending
- 2023-06-22 CN CN202380052060.5A patent/CN119630929A/zh active Pending
- 2023-06-22 WO PCT/EP2023/067046 patent/WO2024008476A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN119630929A (zh) | 2025-03-14 |
| FR3137745A1 (fr) | 2024-01-12 |
| FR3137745B1 (fr) | 2026-04-24 |
| WO2024008476A1 (fr) | 2024-01-11 |
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