EP3526525A1 - Procede de regulation d'une boucle de chauffage, ventilation et/ou climatisation - Google Patents
Procede de regulation d'une boucle de chauffage, ventilation et/ou climatisationInfo
- Publication number
- EP3526525A1 EP3526525A1 EP17787236.3A EP17787236A EP3526525A1 EP 3526525 A1 EP3526525 A1 EP 3526525A1 EP 17787236 A EP17787236 A EP 17787236A EP 3526525 A1 EP3526525 A1 EP 3526525A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- closed circuit
- compressor
- refrigerant
- heating
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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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
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- 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
- B60H1/00914—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is a bypass of the condenser
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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
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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
- B60H1/32—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
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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
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
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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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- 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
- B60H2001/00928—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 comprising a secondary circuit
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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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for condensers
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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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for evaporators
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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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for expansion valves or capillary tubes
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/195—Pressures of the condenser
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
Definitions
- the invention relates to a method of regulating a heating, ventilation and / or air conditioning loop of an air flow intended for a passenger compartment of a motor vehicle
- a vehicle is commonly equipped with a heating, ventilation and / or air conditioning system to modify the aerothermal parameters of a flow of air penetrating inside a passenger compartment of the vehicle.
- the installation comprises a heater, ventilation and / or air conditioning device delimited by a housing and capable of controlling the flow of air prior to its introduction inside the passenger compartment, according to the requirements of the user.
- the installation includes a heating loop, ventilation and / or air conditioning inside which circulates a refrigerant.
- Such a loop can conventionally operate according to "a mode
- the loop When the loop operates in the "heat pump mode” also called “heating mode", it is found that when the air temperature outside the vehicle is low, for example below -10 ° C, the power of The available heat is not sufficient to meet the needs of the user.
- the available heating power is about 2700 W while the heating power needed to satisfy the needs of the user is estimated at 5000 W.
- the object of the present invention is to propose a method for regulating a heating, ventilation and / or air conditioning loop making it possible to remedy the disadvantage mentioned above.
- the subject of the invention is thus a method of regulating a heating, ventilation and / or air-conditioning loop of an air flow intended for a passenger compartment of a motor vehicle inside which a refrigerant circulates, said loop 5 comprising at least one compressor and a condenser, the loop being configured to operate in heat pump mode according to a first closed circuit comprising the compressor and the condenser, the loop being configured to circulate the fluid in a second closed circuit in which the fluid passes successively at least the compressor and then the condenser by partially circuit- ing the first closed circuit while undergoing expansion before crossing again the compressor,
- control method comprising a step, said pumping step, in which the loop is configured so that the refrigerant circulating in the first closed circuit is directed from the first closed circuit in the second closed circuit.
- the invention consists in exploiting an expansion of the fluid which is reinjected into the compressor without being cooled beforehand. This allows
- the available heating power can reach 4000 to 5000 W.
- the invention comprises a step subsequent to the pumping step, the so-called priming step, in which the
- First closed circuit and the second closed circuit are disconnected from each other.
- a water pump of the second closed circuit is deactivated.
- a blower for setting the air flow for the passenger compartment is deactivated.
- the method comprises a step subsequent to the initiation step, said step of ramping up, during which the heating loop is configured so that the air flow that feeds the cabin and is heated by a heating radiator fed by a flow of water set in motion by the water pump.
- the method comprises a step subsequent to the power-up step, said step of power stabilization, during which the flow rate of the air flow heated by the radiator is increased. heating the second closed circuit and / or a water flow of a water pump of the second closed circuit.
- the priming step is triggered when a pressure of the refrigerant in a heat exchanger of the first closed circuit decreases until a pressure threshold value is reached.
- the step of ramping up is triggered when a pressure of the refrigerant at the outlet of the
- the compressor of the second closed circuit becomes greater than a first pressure threshold value.
- the power stabilization stage is triggered when a refrigerant pressure at the outlet of the compressor of the second closed circuit becomes greater than a pressure threshold value.
- the power stabilization step is triggered when a water temperature flowing in a water pump of the second closed circuit is greater than a threshold temperature value.
- the pumping step is triggered when an outside temperature is between a first temperature and a second temperature.
- the refrigerant circulates from a heat exchanger via an expansion device and an evaporator of the first closed circuit in the compressor of the second closed circuit and then in a condenser and an expansion member of the second closed circuit.
- the refrigerant flows from the compressor into the condenser of the second closed circuit, said at least one connection and disconnection valve being configured in the disconnected position of the first closed circuit of the second closed circuit.
- the invention also relates to a thermal pre-conditioning method of a passenger compartment of a motor vehicle, comprising a control method as described above.
- FIG. 1 is a schematic view of a first embodiment of a
- FIG. 2 is a view of the installation of FIG. 1, according to a first mode of operation
- FIG. 3 is a view of the installation of FIG. 1, according to a second mode of operation
- FIG. 4 is a view of the installation of FIG. 1, according to a third mode of operation
- FIG. 5 is a view of the installation of FIG. 1, according to a fourth mode of operation
- FIG. 6 is a timing diagram of a method of regulating the installation
- FIG. 7 is a view of the installation of FIG. 1 in a pumping step of the process of FIG. 6,
- FIG. 8 is a view of the installation of FIG. 1 in a step initiating, ramping up or power stabilizing the process of FIG. 6,
- FIG. 9 is a view of the installation of FIG. 1 equipped with pressure and temperature sensors for carrying out the process of FIG. 6, and FIG. 10 illustrates an evolution of various parameters during the process of FIG. regulation of Figure 6.
- Figure 1 illustrates a heating, ventilation and / or air conditioning system
- heating, ventilation and / or air conditioning 1 capable of modifying the aerothermal parameters of an air flow F intended to penetrate a passenger compartment of a vehicle, in particular an electric or hybrid vehicle.
- the installation of heating, ventilation and / or air conditioning 1 includes a heating, ventilation and / or air conditioning unit 2 able to control the air flow
- the apparatus 2 is delimited by a housing 3, for example made of polymer material, and comprises a blower 4 located inside the housing 3 and able to generate the air flow F from at least one inlet 5 towards at least one exhaust port 6 made in the housing 3, the flow of air F from the orifice
- the heating, ventilation and / or air conditioning system 1 comprises:
- a heating, ventilation and / or air-conditioning loop 7 inside which a refrigerant circulates such as a refrigerant known under the name R134a or R1234yf;
- the heating, ventilation and / or air-conditioning loop 7 comprises a condenser 9, a heat exchanger 10 able to form a condenser or an evaporator, an evaporator 11, a first expansion member D1, a second expansion member D2, a third expansion member D3, a compressor 12, a fluid reserve cylinder R, a first stop valve V1, a second stop valve V2, a third stop valve V3, a fourth stop valve V4 and a fifth stop valve V5.
- the condenser 9 is configured to perform a heat exchange between the refrigerant and the heat transfer fluid of the heating circuit 8.
- the condenser 9 comprises two independent paths, namely a primary path and a secondary path.
- the primary path is traversed by the refrigerant from a primary inlet 13 to a primary outlet 14.
- the secondary path is traversed by the coolant from a secondary inlet 15 to a secondary outlet 16.
- the heat exchanger 10 more commonly called evapo-condenser, can be placed on the front of the vehicle, so as to exchange heat with the outside air E of the vehicle.
- the evaporator 1 1 is located in the housing 3 of the installation 1 downstream of the pulsator 4 in the direction of flow of the air flow F inside the housing 3, so as to exchange heat with the air flow F intended to enter the passenger compartment of the vehicle.
- the first, second and third expansion members D1, D2, D3 allow expansion of the refrigerant from the high pressure 20 to the low pressure.
- Each expansion member D1, D2, D3 is movable between an open position in which the fluid can pass through and is expanded at the outlet thereof, and a closed position in which the fluid can not pass through it, and in other words, the expansion member D1, D2, D3 is sealed regardless of the flow direction of the fluid.
- Each expansion member D1, D2, D3 may be an electronically controlled expansion valve or a calibrated orifice.
- the compressor 12 is able to carry the refrigerant at a high pressure.
- the bottle R also advantageously makes it possible to carry out a separation of liquid / gas phases in order to prevent refrigerant in the liquid state from being admitted inside the compressor 12.
- Each valve V1, V2, V3, V4, V5 stop is movable between a position open in which the fluid can pass through, and a closed position in which the fluid can not pass through it, and in other words, the valve V1, V2, V3, V4, V5 is tight regardless of the direction of fluid flow.
- valve V1, V2, V3, V4, V5 is only completely sealed in one direction of circulation of the fluid in the closed position
- the valve can be associated with a non-return valve to obtain a complete watertightness. whatever the direction of circulation of the fluid.
- the heating, ventilation and / or air conditioning loop 7 furthermore comprises:
- portion refers to any device making it possible to establish a fluidic connection such as for example a pipe, a pipe or a pipe.
- the portion of the loop 7 between the third branch E3 and the seventh branch E7 and in other words the assembly comprising the twenty-third portion P23, the first expansion member D1 and the twenty-third portion.
- fourth portion P24 represents a branch of short- circuiting also called bypass branch.
- branch of short-circuiting a branch that allows the refrigerant to bypass certain components of the heating loop, ventilation and / or air conditioning 7.
- the heating circuit 8 comprises a pump 17 and a heating radiator 18.
- the heat transfer fluid exchanges heat with the refrigerant through the condenser 9.
- the pump 17 is able to circulate the heat transfer fluid in the circuit 8.
- the heating radiator 18 is located in the housing 3 downstream of the evaporator 1 1 in the direction of flow of the air flow F inside the housing 3, so as to exchange heat with the flow F air to enter the passenger compartment of the vehicle.
- the apparatus 2 comprises various maneuverable flaps (not shown) located in the casing 3, these flaps making it possible to control the passage of the air flow 15 F through the evaporator 1 1 and / or the heating radiator 18, in upstream of its introduction into the passenger compartment of the vehicle.
- the heating circuit 8 furthermore comprises:
- portion refers to any device making it possible to establish a fluidic connection such as for example a pipe, a pipe or a pipe.
- FIG. 2 illustrates a first mode of operation of the installation 1, also called “heat pump mode” or “heating mode”, in which the refrigerant of the loop 7 circulates in a first closed circuit.
- the pump 17 is started, the compressor 12 is started, the first valve V1 is closed, the second valve V2 is open, the third valve V3 is open, the fourth valve V4 is closed, the fifth valve V5 is closed, the first expansion member D1 is closed, the second expansion member D2 is closed, the third expansion member D3 is open and the heat exchanger 10 forms an evaporator.
- the refrigerant passes successively through the compressor 12, the condenser 9, the second valve V2, the third expansion member D3, the heat exchanger 10 forming an evaporator, the third valve V3 and then the R bottle before crossing the compressor 12 again.
- the heat exchanger 10 recovers heat outside.
- the flow of air F intended to enter the passenger compartment exchanges heat with the heating radiator 18, and more
- the air flow F is reheated during its passage through the heating radiator 18.
- FIG. 3 illustrates a second mode of operation of the installation 1, also called “hot gas mode", in which the refrigerant of the loop 7 circulates in a second closed circuit.
- hot gas mode a second mode of operation of the installation
- the pump 17 is started, the compressor 12 is started, the first valve V1 is closed, the second valve V2 is opened, the third valve V3 is closed, the fourth valve V4 is closed, the fifth valve V5 is closed, the first expansion member D1 is open, the second expansion member D2 is closed, the third expansion member D3 is closed.
- the refrigerant passes successively through the compressor 12, the condenser 9, the second valve V2, the first expansion member D1 and then the bottle R before passing through the compressor 12 again.
- the fact that following its expansion, the fluid is reinjected into the compressor 12 without being cooled beforehand allows according to the invention to have a cooler refrigerant output compressor 12, a heat transfer fluid hotter and thus in general to have 'greater heating power.
- the available heating power is 5000 W.
- the second circuit advantageously has a minimum volume to ensure the most efficient energy transfer possible.
- the second circuit advantageously comprises a charge buffer which may take the form of a circuit extension, a tank such as the bottle R or other.
- FIG. 4 illustrates a third mode of operation of the installation 1, also called “air conditioning mode", in which the refrigerant of the installation
- the refrigerant passes successively through the compressor 12, the first valve V1, the fifth valve V5, the heat exchanger 10 forming a condenser, the second expansion member D2, the evaporator 11, the fourth valve V4 then the bottle R before crossing again the compressor 12.
- the heat exchanger 10 evacuates heat to the outside.
- the flow of air F intended to enter the passenger compartment exchanges heat with the evaporator 1 1, and more precisely the flow
- FIG. 5 illustrates a fourth mode of operation of the installation 1, also called “dehumidification mode", wherein the refrigerant of the loop 7 flows in a fourth closed circuit.
- the pump 17 is started, the compressor 12 is started, the first valve V1 is closed, the second valve V2 is open, the third valve V3 is closed, the fourth valve V4 is open, the fifth V5 valve is open, the first expansion member D1 is closed, the second expansion member D2 is open, the third expansion member D3 is closed and the heat exchanger 10 forms a condenser.
- the refrigerant passes successively through the compressor 12, the condenser 9, the second valve V 2, the fifth valve V 5, the heat exchanger 10 forming a condenser, the second expansion member D 2, the evaporator 1 1, the fourth valve V4 then the bottle R before crossing the compressor 12 again.
- the flow of air F intended to enter the passenger compartment exchanges heat with the evaporator 1 1 and then the heating radiator 18, and more precisely the air flow F is, at first, cooled during its passing through the evaporator 1 1, then in a second time, is heated during its passage through the heating radiator 18
- the heating, ventilation and / or air conditioning system comprises only the heating loop 7, ventilation and / or air conditioning inside
- the condenser 9 is located in the housing 3 downstream of the evaporator 1 1 in the direction of flow of the air flow inside the housing 3, so as to exchange heat with the flow of air F intended to enter the passenger compartment of the vehicle.
- the fluid intended to penetrate the passenger compartment exchanges heat with:
- the evaporator 1 1, according to the third mode of operation,
- the internal diameter of the various valves V1, V2, V3, V4, V5 is chosen so as to have a good compromise, in operation, between the pressure of the refrigerant and the amount of refrigerant present in the loop. 7.
- the internal diameter of the various valves V1, V2, V3, V4 is chosen as follows:
- the internal diameter of the first valve V1 is between 4 mm and 8 mm, and is for example 6 mm,
- the internal diameter of the second valve V 2 is between 4 mm and 8 mm, and is for example 6 mm,
- the internal diameter of the third valve V3 is between 14 mm and 18 mm, and is for example 16 mm,
- the internal diameter of the fourth valve V4 is between 14 mm and 18 mm, and is for example 16 mm.
- the first and second stop valves V1, V2 may be replaced by a valve comprising three channels.
- the fifth valve V5 stop and the third expansion member D3 can be replaced by a specific valve capable of occupying the following positions :
- a first open position in which the fluid can pass through it and is relaxed at the outlet thereof (first operating mode);
- a second open position in which the fluid can pass through it and is not relaxed at the outlet thereof (third and fourth modes of operation);
- the subject of the invention is a method of regulating the second mode of operation, or "hot gas mode" described above.
- control method 60 advantageously comprises a succession of four steps, namely a first step, referred to as a pumping step, referenced 61, followed by a second step 62, called a priming step, a third step step 63, said ramp-up step and a fourth step 64, said power stabilization step.
- the first and the second expansion members, D1 and D2 are open.
- the refrigerant flows from the heat exchanger 10 to the compressor 12 via the shutoff valve V3 and via the evaporator 11.
- the first closed circuit 100 discharges the refrigerant into the second closed circuit 101.
- the first closed circuit 100 comprises the heat exchanger 10, the expansion member D2, the evaporator 1 1, the shutoff valves V3, V4 and V5.
- the second closed circuit 101 comprises the bottle R, the compressor 12, the stop valves V1 and V2, the condenser 9 and the expansion member D1.
- the shutoff valves V3, V4 and V5 make it possible to connect or disconnect the first closed circuit 100 of the second closed circuit 101. Between the pumping step and the following steps, the shutoff valves V3 and V4 change state when passing from the closed state to the open state.
- the first and the second expansion members, D1 and D2 are open.
- the loop operates in "hot gas" mode already described in relation to FIG.
- the pump 17 operates, so that the water circulates in the condenser 9 and in the heating radiator 18.
- the pump 17 operates in nominal mode.
- the water flow rate is between 100 and 250 l / h.
- the pump 17 is stopped; there is no flow of water in the condenser 9 and the heating radiator 18.
- the pump 17 operates, so that the water circulates in the condenser 9 and in the heating radiator 18.
- the pump 17 operates in nominal mode.
- the water flow rate is between 100 and 250 l / h.
- the pump 17 operates, so that the water circulates in the condenser 9 and in the heating radiator 18.
- the pump 17 operates at maximum speed.
- the speed of the pump will correspond to a water flow of between 300 and 750 l / h.
- the speed of the blower 4 is preferably a minimum speed.
- the speed of the blower will correspond to a cabin air flow rate of between 100 and 150 kg / h.
- the priming step 62 the blower 4 is stopped, so that the cabin is not supplied with air.
- the speed of the blower 4 is preferably greater than its speed in the pumping step.
- the speed of the blower 4 is adjusted according to the rise in temperature of the water.
- the speed of the blower 4 is equal to its speed in the power up step.
- the speed of the compressor 12 is maximum in each of the pumping 61, priming 62, ramp-up 63 and power stabilization 64 stages.
- the speed of the compressor is less than a limit speed of acoustic comfort.
- the speed of the compressor 12 depends on the steps, as will be detailed later.
- the installation 1 implementing the loop 7 comprises a plurality of sensors.
- the plant 1 comprises a first refrigerant pressure sensor
- the first pressure sensor 91 is disposed at the inlet of the compressor in the branch P1 connecting the bottle to the compressor 12.
- the installation 1 comprises a second refrigerant pressure sensor 92 (PRCO).
- PRCO refrigerant pressure sensor
- the second pressure sensor 92 is disposed at the outlet of the compressor
- the installation 1 also comprises a third refrigerant pressure sensor 93 (PRECO) at the outlet of the heat exchanger 10.
- PRECO refrigerant pressure sensor
- the installation 1 also includes a temperature sensor 94 (TAMB)
- the system 7 also comprises a temperature sensor 95 (TWCDO) configured to measure the water temperature at the outlet of the condenser 9.
- TWCDO temperature sensor 95
- the pressure sensor 91 and / or the pressure sensor 93 are replaced respectively by a temperature sensor TRCI and a temperature sensor TRECO.
- Each of the temperature sensors is in this case configured to measure the temperature of the refrigerant and / or the temperature of the walls respectively forming the branch P1 connecting the bottle R to the compressor 12 and the branch P15 connecting the heat exchanger 10 to the branch E6.
- the second temperature sensor 91 is not installed.
- the pressure is calculated on the basis of the measurement of the sensor 93 and a model of low pressure between the outlet of the exchanger 10 and the inlet of the compressor 12, taking into account the loss of load in the branches of the loop.
- the installation comprises a control unit 96 to which each sensor is connected.
- the "hot gas" mode is triggered when the outside air temperature is between two temperatures T0 and T1, T0 being less than T1.
- T0 is of the order of -25 ° C
- T1 is of the order of -10 ° C.
- the "heat pump” mode is triggered when the outside air temperature is between the temperature T1, and a third temperature T2, greater than T0.
- the temperature T2 is of the order of 5 ° C.
- Ncpr revolutions per minute
- Upomp expressed in V
- the "hot gas" mode is advantageously triggered if the following conditions are met:
- the pressure at the inlet of the compressor possibly measured by the first pressure sensor 91, is greater than a threshold pressure value, denoted PRCImin,
- the pressure at the outlet of the compressor possibly measured by the first pressure sensor 92 is less than a threshold pressure value, denoted PRCOmaxHP,
- TWCDOmax a threshold temperature value
- the outside temperature also measured by the temperature sensor 94, is between the lower threshold value TO and the upper threshold value T1.
- the threshold pressure value PRCImin is between 0.7 bar and 1.2 bar.
- the PRCOmaxHP threshold pressure value is between 16 bar and 24 bar.
- the threshold temperature value TWCDOmax is of the order of
- the threshold temperature value T0 is of the order of -25 ° C. and the threshold temperature T1 is of the order of -10 ° C.
- the pumping step 61 starts, depending on the following state of the parameters:
- valves V1 and V5 are closed while the valves V3 and V4 are open,
- the voltage across the pump 17 Upomp is set to an UpompHGI value, which advantageously depends on the outside temperature
- the voltage at the terminals of the pulser 4 Uhvac is set to a value Ublowerl
- the speed of the compressor 12 Ncpr is set to a value NcprHGI, preferably between 5000 rpm and 7000 rpm.
- the priming step 92 is triggered, preferably according to the state of the parameters :
- valves V3 and V4 close
- the voltage across the pump 12 Upomp is set to a value UpompHG2, advantageously zero,
- the voltage at the terminals of the blower 4, Uhvac is set to the value UblowerO, preferably zero,
- the compressor speed 12 Ncpr is set to a maximum value
- Ncprmax which preferably depends on the speed of the vehicle and / or a request from a user.
- valves remain in the same state as in the priming step 62,
- the voltage across the pump 17 Upomp is set to a value UpompHG3, so that the flow of water is advantageously between 1001 / h and 250 l / h,
- the voltage at the terminals of the blower 4 Uhvac is set to the value Ublower i o HG.
- the compressor speed 12 Ncpr is set to the maximum value, Ncprmax.
- TWCDOtarget a threshold temperature value
- the power stabilization step 64 is triggered, preferably according to the following state of the parameters:
- valves remain in the same state as in the priming step 62,
- the voltage across the pump 17 Upomp is set to a value UpompHG4, so that the flow of water is advantageously between 300 l / h and 750 l / h,
- the voltage at the terminals of the pulser 4 Uhvac is set to a value
- the compressor speed 12 Ncpr is set to the maximum value, Ncprmax.
- the speed of the compressor is regulated so that the water temperature TWCDO reaches its TWCDOtarget setpoint, while respecting the limit of the maximum compressor output pressure threshold equal to PRCOmaxHG.
- the curve 10-1 illustrates the evolution over time of the pressure at the outlet of the compressor 12.
- the pressure of the refrigerant at the outlet of the compressor 12 increases progressively during the pumping step 61 and then more rapidly during the priming step 62.
- the pressure decreases before increasing progressively again during the ramp-up 63 and stabilization steps 64.
- Curve 10-2 illustrates the evolution over time of the blown air temperature in the passenger compartment.
- the air temperature increases progressively during the pumping step 61 before decreasing during the priming step 62, because of the stopping of the blower 4.
- Curve 10-3 illustrates the evolution over time of the water flow in the pump.
- the flow rate of water increases gradually during the pumping step 61 before decreasing during the priming step 62 until it becomes zero due to the stopping of the pump.
- the speed of the compressor 12 is between 5000 rpm and 7000 rpm
- the pump flow 17 is of the order of 130 l / h and the flow rate of air in the passenger compartment is set to minimum;
- the speed of the compressor is of the order of 8500 rpm and the air flow in the passenger compartment is set to a minimum;
- the speed of the compressor 12 is of the order of 8500 rpm
- the pump flow 17 is of the order of 150 l / h until the pressure at the outlet of the pump compressor is of the order of 20
- the speed of the compressor 12 is of the order of 8500 rpm
- the pump flow 17 is of the order of 600 l / h to maintain the outlet pressure of the compressor at 20 bar and the air flow in the passenger compartment is set to the maximum.
- the pumping step lasts 3 minutes, the initiation stage lasts 2 minutes and the ramp-up stage lasts 10 minutes.
- the subject of the invention is also a thermal preconditioning process for a passenger compartment of a motor vehicle, comprising the regulation method 60.
- the thermal pre-conditioning process allows the vehicle to be thermally prepared prior to use.
- the method 60 is preferably implemented before a user uses his motor vehicle.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1659858A FR3057211B1 (fr) | 2016-10-12 | 2016-10-12 | Procede de regulation d'une boucle de chauffage, ventilation et/ou climatisation |
| PCT/FR2017/052731 WO2018069606A1 (fr) | 2016-10-12 | 2017-10-04 | Procede de regulation d'une boucle de chauffage, ventilation et/ou climatisation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3526525A1 true EP3526525A1 (fr) | 2019-08-21 |
Family
ID=57583296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17787236.3A Withdrawn EP3526525A1 (fr) | 2016-10-12 | 2017-10-04 | Procede de regulation d'une boucle de chauffage, ventilation et/ou climatisation |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3526525A1 (fr) |
| CN (1) | CN110088541A (fr) |
| FR (1) | FR3057211B1 (fr) |
| WO (1) | WO2018069606A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2621339B (en) * | 2022-08-08 | 2024-09-04 | Jaguar Land Rover Ltd | Method for pathogen control in a vehicle heat pump system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018020104A1 (fr) * | 2016-07-28 | 2018-02-01 | Valeo Systemes Thermiques | Boucle de chauffage, ventilation et/ou climatisation |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4346781B2 (ja) * | 2000-03-07 | 2009-10-21 | 三菱重工業株式会社 | 車両用空気調和装置 |
| US6715307B2 (en) * | 2001-01-24 | 2004-04-06 | Calsonic Kansei Corporation | Air conditioner for vehicle |
| DE10207128A1 (de) * | 2002-02-20 | 2003-08-21 | Zexel Valeo Compressor Europe | Fahrzeugklimaanlage, insbesondere CO2-Klimaanlage |
| JP2011140291A (ja) * | 2010-01-11 | 2011-07-21 | Denso Corp | 車両用空調装置 |
| FR2958018A1 (fr) * | 2010-03-24 | 2011-09-30 | Valeo Systemes Thermiques | Boucle de chauffage, ventilation et/ou climatisation et installation de chauffage, ventilation et/ou climatisation comprenant une telle boucle de chauffage, ventilation et/ou climatisation |
| FR2958020B1 (fr) * | 2010-03-25 | 2015-07-17 | Valeo Systemes Thermiques | Boucle de climatisation comprenant un echangeur thermique directement interpose entre deux organes de detente |
| JP2012137207A (ja) * | 2010-12-24 | 2012-07-19 | Mitsubishi Electric Corp | 冷凍サイクル装置 |
| US9316421B2 (en) * | 2012-08-02 | 2016-04-19 | Mitsubishi Electric Corporation | Air-conditioning apparatus including unit for increasing heating capacity |
| JP6125325B2 (ja) * | 2013-05-20 | 2017-05-10 | サンデンホールディングス株式会社 | 車両用空気調和装置 |
| FR3020129B1 (fr) * | 2014-04-16 | 2019-03-22 | Valeo Systemes Thermiques | Circuit de fluide frigorigene |
| FR3020319B1 (fr) * | 2014-04-25 | 2016-04-29 | Valeo Systemes Thermiques | Dispositif de gestion thermique de vehicule automobile |
-
2016
- 2016-10-12 FR FR1659858A patent/FR3057211B1/fr not_active Expired - Fee Related
-
2017
- 2017-10-04 CN CN201780075543.1A patent/CN110088541A/zh active Pending
- 2017-10-04 WO PCT/FR2017/052731 patent/WO2018069606A1/fr not_active Ceased
- 2017-10-04 EP EP17787236.3A patent/EP3526525A1/fr not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018020104A1 (fr) * | 2016-07-28 | 2018-02-01 | Valeo Systemes Thermiques | Boucle de chauffage, ventilation et/ou climatisation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110088541A (zh) | 2019-08-02 |
| FR3057211B1 (fr) | 2020-09-04 |
| WO2018069606A1 (fr) | 2018-04-19 |
| FR3057211A1 (fr) | 2018-04-13 |
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