EP4072875A1 - Procédé de réchauffage permettant de faire fonctionner un système de réfrigération pour un véhicule à moteur, système de réfrigération et véhicule à moteur équipé d'un système de réfrigération de ce type - Google Patents

Procédé de réchauffage permettant de faire fonctionner un système de réfrigération pour un véhicule à moteur, système de réfrigération et véhicule à moteur équipé d'un système de réfrigération de ce type

Info

Publication number
EP4072875A1
EP4072875A1 EP20785471.2A EP20785471A EP4072875A1 EP 4072875 A1 EP4072875 A1 EP 4072875A1 EP 20785471 A EP20785471 A EP 20785471A EP 4072875 A1 EP4072875 A1 EP 4072875A1
Authority
EP
European Patent Office
Prior art keywords
refrigeration system
evaporator
heating
heat exchanger
expansion valve
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
Application number
EP20785471.2A
Other languages
German (de)
English (en)
Inventor
Dirk Schroeder
Christian Rebinger
Helmut Rottenkolber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP4072875A1 publication Critical patent/EP4072875A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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 [HVAC] 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
    • B60H1/00907—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant changes and an evaporator becomes condenser
    • 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 [HVAC] 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
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control
    • B60H1/00842—Damper doors, e.g. position control the system comprising a plurality of damper doors; Air distribution between several outlets
    • 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 [HVAC] 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
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • 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 [HVAC] 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
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion 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
    • F25B41/40—Fluid line arrangements
    • 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
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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 [HVAC] 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
    • 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 [HVAC] 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
    • B60H2001/00949—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 additional heating/cooling sources, e.g. second evaporator
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02791—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using shut-off 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion 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
    • 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
    • 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
    • F25B2700/19—Pressures
    • F25B2700/197—Pressures of the evaporator
    • 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
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet 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
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator

Definitions

  • the invention relates to a reheating method (RH II) for operating a Käl testrom with heat pump function for a motor vehicle, a refrigeration system and a motor vehicle with such a refrigeration system.
  • a refrigeration system with a heat pump function usually comprises a refrigerant compressor which can be or is connected to a primary branch and a secondary branch; an external heat exchanger which is arranged in the primary märstrang; an evaporator, which is net angeord in the primary line; a heating register, which is arranged in the secondary line; at least one movable temperature flap, which is arranged in relation to a supply air flow direction before or after the heating register; and at least one shut-off element which is arranged downstream of the heating register in the secondary branch.
  • the air conditioning of a vehicle interior is the one that is cooled and dehumidified by the evaporator Air brought to ei ne desired blow-out temperature by at least partial heating by means of the heating register.
  • the heating register is a heat source in which the heat stored in the refrigerant is transferred to another medium, such as air, water, a water-glycol mixture and the like.
  • the heating register can be designed as a heating condenser or heating gas cooler if (ambient) air flows through it directly as cabin air, which absorbs the emitted heat.
  • the heating register can be performed as a fluid heat exchanger if it is flowed through or around by a fluid other than (ambient) air, such as water, water-glycol mixture or the like, with the heat stored in the refrigerant the fluid is dispensed. In the case of the design as a fluid heat exchanger, a further heat transfer then takes place from the heated fluid to the (ambient) air. In this respect, a fluid heat exchanger indirectly heats (ambient) air as the cabin air flow.
  • At least one temperature flap can be used in the air flow path between the evaporator and the heating register (i.e. upstream of the heating register) that is completely closed (0% open position or closed position) when the air is cooled and not heated into the vehicle interior should.
  • the temperature flap When the temperature flap is fully open (100% open position), essentially all of the air flow from the evaporator is passed over the heating register and heated. If the temperature flap is partially opened, part of the air is passed over the heating register and the other part of the air is passed around the heating register and is not heated, so that a mixture of heated and cooled air is formed downstream of the heating register, which is then sent to the Vehicle interior is fed.
  • the adjustable temperature flap can alternatively also be arranged downstream of the heating register.
  • a post-heating method is therefore proposed for operating a refrigeration system for a motor vehicle, the refrigeration system comprising: a refrigerant compressor which can be or is connected to a primary branch and a secondary branch; an external heat exchanger which is arranged in the primary train; an evaporator which is arranged in the primary line; a heating register, which is arranged in the secondary line; at least one movable temperature flap, which is arranged in front of or after (upstream or downstream) the heating register with respect to a supply air flow direction; at least one shut-off device which is arranged downstream of the heating register in the secondary branch; the post-heating process comprising the following steps:
  • Such a post-heating process can be used in particular when an increasing heating requirement is determined that can no longer be achieved by itself the heat transferred to the refrigerant at the evaporator and via the compressor can be covered.
  • heat can be extracted from the coolant used as a heat source, such as water, water-glycol mixture, (ambient) air. This increases the temperature and the pressure of the refrigerant in the refrigeration system, so that the heating output made possible by the refrigeration system, together with the compressor drive output, increases.
  • a method also enables the reheating mode or reheat mode to be achieved through a compact interconnection of the refrigeration system with a few active components.
  • the ambient temperature can be recorded and the process can be carried out when the ambient temperature is up to 15 ° C, in particular in a range from about 0 ° to 15 °, ie down to a lower ambient temperature that just allows refrigeration system operation allowed. This can ensure that the described interconnection of the refrigeration system with an additionally integrated heat sink is carried out when the operating and ambient conditions are favorable for such a post-heating operation.
  • the at least one further heat sink can be incorporated by opening an expansion valve connected upstream of the heat sink in question.
  • an expansion valve can be opened step by step or incrementally.
  • the post-heating process can include the following steps:
  • the post-heating process can thus be carried out with the temperature flaps essentially kept constant or open by directly influencing the pressure and temperature conditions in the refrigeration circuit. Since the post-heating process described here can be ended when the expansion valve reaches a corresponding position, or operation can be switched to another post-heating process.
  • the target opening position of the temperature flap can be set to a value between 60% to 90%, in particular to a value between 70% and 85%, based on a maximum opening position of 100%.
  • an expansion valve upstream of the evaporator can always be kept in an open position, which can be set or adjusted depending on the required or required cooling capacity (dehumidification requirement), among other things.
  • refrigerant always flows through the evaporator during this post-heating process, regardless of which other heat sink (s) is or are involved.
  • the air to be supplied to a vehicle interior is always dehumidified.
  • an electrical cal heating module can be switched on. This makes it possible to respond to a further increase in heating demand.
  • the maximum opening position should assume a sensible and justifiable value that does not necessarily have to correspond to 100% opening, but can also be less than 100%.
  • a refrigeration system for a motor vehicle is also proposed, with a refrigerant compressor which can be or is connected to a primary line and a secondary line; an external heat exchanger which is arranged in the primary train; an evaporator which is arranged in the primary line; a heating register which is arranged in the secondary line; at least one movable temperature flap which is arranged upstream or downstream of the heating register with respect to a direction of supply air flow; at least one shut-off device, which is arranged downstream of the heating register in the secondary branch;
  • the refrigeration system is set up to be operated in a post-heating operation described above, and in such post-heating operation the refrigerant flows through the following components of the refrigeration system one after the other starting from the refrigerant compressor: heating register in the secondary line, evaporator in the primary line and, in terms of flow, a parallel or in Row to the Ver evaporator arranged heat sink, in particular a chiller working as a water heat pump evaporator and / or the external heat exchanger
  • the external heat exchanger can have a bidirectional flow. Air heat pump operation can be enabled here by means of the refrigeration system. Depending on the implemented system design and line routing, the external heat exchanger can also have a monodirectional flow.
  • a shut-off valve can be arranged between the heating register and the evaporator and an expansion valve can be arranged between the heating register and the external heat exchanger. Both the shut-off valve and the expansion valve represent a respective shut-off device that is used to carry out the reheating process. With such a configuration, the post-heating process can be carried out with the shut-off valve open and the expansion valve closed, so that refrigerant can flow from the heating register directly to the evaporator.
  • a non-return valve can be arranged between the heating register and the evaporator.
  • the check valve is also a shut-off device that is used to carry out the reheating process.
  • Such a check valve enables refrigerant to flow through from the heating register in the direction of the evaporator, with flow through or also back flow in the opposite direction being prevented.
  • the external heat exchanger can have a monodirectional flow. In such a configuration of the refrigeration system, an air heat pump operation can still be represented, but a reheating operation via a series connection of the heating register and the external heat exchanger is not possible because a fluidic connection or line between the heating register and the external heat exchanger is dispensed with. In this respect, such a configuration represents a simplification of a refrigeration system, which can, however, continue to be operated with the post-heating method.
  • the external heat exchanger can have a monodirectional or bidirectional flow, depending on the embodiment of the refrigeration system.
  • the refrigerant always flows through the external heat exchanger in the same direction or in the same way in refrigeration system operation and in air heat pump mode.
  • the external heat exchanger in refrigeration system operation is flowed through by refrigerant in a different or different direction (opposite) than in air heat pump mode.
  • the outer heat exchanger it should also be noted that - similar to the heating register - it can transfer heat to or from the (ambient) air both directly (as a gas condenser or gas cooler) and indirectly (as a fluid heat exchanger) .
  • An expansion valve which is configured to set an intermediate pressure level on the evaporator, can be arranged downstream of the evaporator. This can counteract icing of the evaporator, because the pressure in the evaporator can be set so that icing due to condensing water from the evaporator supply air can be excluded while other low-pressure side system sections can be operated at a lower pressure level.
  • a motor vehicle can be equipped with a refrigeration system described above.
  • the motor vehicle can in particular be an electric vehicle.
  • the efficient operation of the refrigeration system can lead to electricity savings, so that a greater range of the electric vehicle can be achieved as a result.
  • FIG. 1 shows a schematic and simplified circuit diagram of a refrigeration system for a motor vehicle
  • FIG. 2 shows a flow diagram of an exemplary implementation of the NachMapver process, in particular by means of the refrigeration system described in FIG. 1;
  • FIG. 3 shows a schematic and simplified circuit diagram of an embodiment of a refrigeration system for a motor vehicle for performing the heating process after;
  • Fig. 4 is a schematic and simplified circuit diagram of an embodiment form of a refrigeration system for a motor vehicle for performing the heating process after.
  • a refrigeration system 10 for a motor vehicle is shown schematically and simplified.
  • the refrigeration system 10 comprises a refrigerant circuit 11, which can be operated both in a refrigeration system operation (also called AC operation for short) and in a heat pump mode.
  • the refrigeration system 10 comprises a refrigerant compressor 12, an external heat exchanger 18, an internal heat exchanger 20, an evaporator 22 and an accumulator or refrigerant collector 24.
  • the external heat exchanger 18 can be designed as a condenser or gas cooler.
  • the external heat exchanger 18 in the embodiment shown is bidirectional through flow bar.
  • the evaporator 22 is shown here by way of example as a front evaporator for a vehicle.
  • the evaporator 22 also represents other evaporators that are possible in a vehicle, such as, for example, rear evaporators, which can be arranged fluidically parallel to one another.
  • the refrigeration system 10 thus comprises at least one evaporator 22.
  • a shut-off valve A4 is arranged downstream of the compressor 12.
  • An expansion valve AE2 is provided upstream of the evaporator 22.
  • the section from the compressor 12 to the outer heat exchanger 18, to the inner heat exchanger 20 and to the evaporator 22 is referred to as the primary branch 14.
  • the refrigeration system 10 further comprises a meat register 26 (also referred to as a meat condenser or meat gas cooler).
  • a shut-off valve A3 is arranged upstream of the meat register 26.
  • a shut-off valve A1 is arranged downstream of the meat register 26.
  • an expansion valve AE4 is arranged downstream of the fleece condenser 26.
  • the secondary branch 16 comprises a heating branch 16.1, which extends from the shut-off valve A3 via the heating register 26 to the shut-off valve A1.
  • the secondary branch 16 further comprises a reheating branch or reheat branch 16.2, which can be fluidly connected to the heating register 26 upstream and to the external heat exchanger 18 downstream. Since the secondary branch 16 or the reheat branch 16.2 opens into the primary branch 14 at a branch point Ab2.
  • the refrigeration system 10 comprises a further evaporator or chiller 28.
  • the chiller 28 is provided in parallel to the evaporator 22 in terms of flow.
  • the chiller 28 can be used, for example, to cool an electrical component of the vehicle, but also to implement a water heat pump function using the waste heat from at least one electrical component.
  • An expansion valve AE1 is connected upstream of the chiller 28.
  • the refrigeration system 10 can also have an electrical heating element 30, which is designed, for example, as a high-voltage PTC heating element.
  • the electric heating element 30 serves as an auxiliary heater for a supply air flow L routed into the interior of the vehicle.
  • the electric heating element 30 can be accommodated in an air conditioner 32 together with the heating register 26 and the evaporator 22.
  • the electrical heating element 30 can be arranged downstream of the heating register 26.
  • check valves R1 and R2 can also be seen.
  • some sensors pT1 to pT5 for detecting pressure and / or temperature of the refrigerant are also shown. It should be noted that the number of sensors or their arrangement is shown here only as an example.
  • a refrigeration system 10 can also have fewer or more sensors.
  • combined pressure / temperature sensors pT1 to pT5 are shown as sensors. But it is just as conceivable that separate sensors are used for the measurement of pressure or temperature and, if necessary, are also arranged spatially separated from one another along the refrigerant lines.
  • the refrigeration system 10 can be operated in different modes, which are briefly described below.
  • the high-pressure refrigerant flows from the refrigerant compressor 12 into the external heat exchanger 18 with the shut-off valve A4 open. From there, it flows to the high-pressure section of the internal heat exchanger 20 and the fully open expansion valve AE3.
  • the refrigerant can flow via a branch point Ab1 to the expansion valve AE2 and into the interior evaporator 22 (evaporator section 22.1).
  • the refrigerant can flow into the chiller 28 via a branch point Ab4 and the expansion valve AE1 (chiller section 28.1). From the evaporator 22 and / or the chiller 28, the refrigerant flows on the low-pressure side into the collector 24 and through the low-pressure section of the inner heat exchanger 20 back to the compressor 12.
  • the heating branch 16.1 or the secondary branch 16 is shut off by means of the shut-off valve A3, so that hot refrigerant cannot flow through the heating register 26.
  • the shut-off valve designed as a shut-off valve A5 can be opened so that the refrigerant can flow in the direction of the collector 24 via the shut-off element A5 and the check valve R2 while the shut-off element A2 is closed at the same time.
  • shut-off valve A4 In the heating mode of the refrigerant circuit 11, the shut-off valve A4 is closed and the shut-off valve A3 is opened so that hot refrigerant can flow into the heating branch 16.1.
  • the refrigerant flows through the Denser 12 compressed refrigerant into the heating register 26 via the open shut-off valve A3.
  • heat is given off to a supply air flow L guided into the vehicle interior.
  • the refrigerant then flows through the opened shut-off valve A1 and the branch point Ab1.
  • It is expanded by means of the expansion valve AE1 in the chiller 28 to absorb waste heat from the electrical and / or electronic components arranged in a coolant circuit 28.2.
  • the expansion valves AE3 and AE4 are closed, the shut-off valve A5 is closed and the shut-off valve A2 is open.
  • refrigerant stored in the water heat pump mode can be extracted from a bidirectional branch 14.1 or the primary branch 14 via the shut-off valve A2 and fed to the collector 24 via the check valve R2.
  • the refrigerant compressed by means of the refrigerant compressor 12 flows through the open shut-off valve A3 to give off heat to a supply air stream L in the heating register 26 Expansion valve AE3 relaxed in the outer heat exchanger 18 to absorb heat from the ambient air.
  • the refrigerant then flows via a heat pump return branch 15 to the collector 24 and back to the refrigerant compressor 12.
  • the expansion valves AE1, AE2 and AE4 remain closed, as does the shut-off valve A5.
  • An indirect delta connection can be implemented in that, when the shut-off valve A1 is open, the refrigerant compressed by the refrigerant compressor 12 is expanded into the chiller 28 by means of the expansion valve AE1, while at the same time no mass flow is generated on the coolant side, i.e. in the coolant circuit 28.2, e.g. Fluid used as a coolant, such as water or a water-glycol mixture, remains on the coolant side of the chiller 28 or the chiller 28 is not actively flowed through by coolant.
  • the expansion valves AE2, AE3 and AE4 remain closed with this switching variant.
  • the supply air flow L fed into the vehicle interior is initially cooled by means of the evaporator 22 and thus dehumidified.
  • the supply air flow L can be heated completely or at least partially again by means of the Schuregis age 26.
  • the refrigeration system 10 in particular the air conditioning device 32, has adjustable, in particular controllable and pivotable, temperature flaps 34 between the evaporator 22 and the heating register 26.
  • a left and a right temperature flap 34L and 34R are arranged.
  • the temperature flaps 34L, 34R can be set or pivoted between an open position, which is referred to as the 100% position, and a closed position, which is referred to as the 0% position.
  • the entire supply air flow L flowing through the evaporator 22 is guided over the heating register 26 and heated before it can flow into the passenger compartment of the vehicle.
  • the entire supply air flow L flowing through the evaporator 22 flows in the bypass around the heating register 26 without heating and thus without absorbing heat into the passenger compartment.
  • An operating method 500 that is possible for reheating or reheating operation is explained below by way of example using the flow chart in FIG. 2 and with reference to the refrigeration system 10 shown in FIG. 1 and its components.
  • Such an operating method is usually implemented as a control program in a control device for the refrigeration system or for air conditioning in a vehicle.
  • a post-heating operation is considered, in which the refrigerant flows from the compressor 12 via the opened shut-off valve A3 to the meat register 26 (meat condenser or meat gas cooler).
  • the expansion valve AE4 is closed and the shut-off valve A1 is open, so that the refrigerant can flow into the evaporator 22 via the expansion valve AE2.
  • the chiller 28 is integrated as a further heat sink. Accordingly, the expansion valve AE1 is also in an open position.
  • the expansion valve AE3 is closed. The after-heating operation is thus achieved with an interconnection of the refrigeration system 10 with as few active components as possible.
  • the integration of the chiller 28 can take place via a system-side compulsory requirement based on the existing need for cooling at least one floch voltage component or as a meat requirement requirement to generate additional meat performance at the meat register 26, which is functionally equivalent to a "voluntary" floch voltage component cooling.
  • a transition to post-heating operation takes place at a point in time not specified here, which is referred to here as Reheat II (S502).
  • Reheat II One possible condition that must be met in order to start the after-heating operation (S502) can be, for example measured ambient temperature.
  • the reheating process can be activated in particular when the ambient temperature is up to 15 ° C. is, in particular from about 0 ° C to 15 ° C.
  • the two temperature flaps 34L, 34R in this application are set to a target opening position TKso.
  • TKso can be a specific opening value or, as shown in FIG. 2 at 502a, can be a range from an upper opening limit value TKo to a lower opening limit value TKu.
  • at least one refrigeration system parameter is used to determine whether the heating requirement is constant, increasing or decreasing.
  • a variable or refrigeration system parameter used here as an example is the temperature flap opening TKan requested by a control unit. If a larger temperature flap opening TKan is required, the heating requirement increases. If a smaller temperature flap opening TKan is required, the heating requirement is reduced.
  • a temperature flap opening TKan requested by the system in the reheating method considered here does not necessarily lead to a corresponding adjustment of the actual opening position or actual opening position TKis of the temperature flaps 34L, 34R.
  • step S503 it is checked whether a required temperature flap opening TKan is less than the upper opening limit value TKo and greater than the lower opening limit value TKu. If this is the case, according to step S504 the temperature flaps 34L, 34R can be adjusted in their actual open position TKis, which is indicated by the two arrows in step S504. The refrigeration circuit and / or the peripherals influencing the climatic conditions remain unchanged. If the condition of step S503 is not met, a check is made in S505 to determine whether the requested temperature flap opening is greater than the upper opening limit value TKo. Outside these limits takes place on the part of the refrigeration circuit and / or the change in the The periphery influencing climatic conditions has a change and thus a reaction to the changed requirements and boundary conditions.
  • the requested opening position TKan is less than the lower opening limit value TKu (S506). This means that the heating requirement is falling and that the temperature flaps 34L, 34R should actually be closed further. According to the post-heating method 500 described here, however, the temperature flaps are not closed any further. Rather, it is checked in step S507 whether the expansion valve AE1 connected upstream of the chiller 28 has already been set to a minimum value, in particular is closed. If this is the case, it can be checked in S512 whether the ambient temperature T_U is higher than a predetermined comparison temperature value T_x. Depending on the result of the test in S512, another post-heating mode is selected or the refrigeration system is switched to another post-heating mode, which are designated here with RH I or RH III (S513, S514).
  • the expansion valve AE1 is not set to its minimum value in accordance with S507, it is closed further in accordance with S507. This reduces the volume flow Vs_Vdi to be provided by the compressor. The pressure and temperature of the refrigerant also decrease accordingly (S509).
  • the method is carried out as follows on the basis of steps S503 and S505 already mentioned above. If it is determined in S505 that the requested temperature flap opening TKan is greater than the upper opening limit value TKo, this means that the heating requirement is increasing and that the temperature flaps 34L, 34R would actually have to be opened further. However, according to the method described here, the temperature flaps are not (yet) opened any further. Rather, the expansion valve AE1 is opened in step S515. By opening the expansion valve AE1, the supply of heat from the chiller 28 to the refrigeration circuit is enabled or increased. As a result, according to S516, the volume flow Vs_Vdi to be provided by the compressor 12 increases. The pressure and temperature of the refrigerant also increase accordingly.
  • S517 it is checked whether the high pressure pHD and / or the hot gas temperature tHG present in the refrigeration system 10 has reached a maximum value. If this is not the case, S518 checks whether the requested temperature flap opening TKan is greater than the upper opening limit value TKo. If this is the case, S519 checks whether the expansion valve AE1 has already been set to a maximum possible opening value. If the maximum adjustable opening position of the expansion valve AE1 has not yet been reached, a branch is made again to S515 and the expansion valve AE1 is opened further (step by step or incrementally).
  • steps S515, S516, S517, S518, S519 are run through several times.
  • the heating power or heat output of the electrical heating element 30 is reduced again in accordance with S522. If the electrical heating element 30 is no longer active, which is checked in S523, a branch is made to steps S510 and S511, so that if the heating falls or has fallen, the pressure must be adjusted again by setting, in particular closing the opening position of the expansion valve AE1 ( S508) can be reached. If the condition in S524 is met, the refrigeration system 10 is switched to another operating mode or reheating mode, which is referred to here as an example with DWP-RH (S528). However, it can be assumed that with the maximum set waste heat via the refrigeration circuit and with maximum heating output, set via an electrical auxiliary heater, the system can have reached its heating output limits and is therefore operated to the limit.
  • Reheat I Reheat I
  • a parallel notification can be used to vary the performance of the evaporator.
  • the amount of supply air L supplied to the evaporator 22 can be adjusted in order to influence the heating performance.
  • Fresh air or circulating air or a mixture of fresh air and circulating air can be used as the supplied air.
  • the target temperature of the air after the evaporator can be changed within the limits defined and permitted by the control unit. This change is based in particular on the need for dehumidification.
  • the reheating process shown in Fig. 2 was described using the example of the additional Lich integrated chiller with its upstream expansion valve AE1.
  • the method can also be carried out by means of the external heat exchanger 18 and with the expansion valve AE3 open or adjustable.
  • the external heat exchanger 18 is provided fluidically parallel to the evaporator 22 and operates as an air heat pump evaporator.
  • AE3 could also stand at all points in FIG. 2 where AE1 is mentioned. It is also conceivable that both the chiller 28 and the external heat exchanger 18 are integrated together as heat sinks. Accordingly, the opening positions of AE1 and AE3 would then be checked or adjusted in accordance with the method shown in FIG.
  • FIG. 3 shows an embodiment of a refrigeration system 110, with which the reheating method Re-heat II described above with reference to FIG. 2 can also be carried out.
  • the refrigeration system 110 according to this embodiment is structurally simplified compared to the refrigeration system shown in FIG. 1. 10. As can be seen from FIG. 3, only one connection to the evaporator 22 or the chiller 28 is provided downstream of the heating register 26.
  • the refrigeration system 110 has no after-heating branch or reheat branch 16.2 (FIG. 1). Correspondingly, the external heat exchanger 18 can no longer be connected in series with the heating register 26.
  • a check valve R3 is arranged between the heating register 26 and the expansion valve AE2 or the expansion valve AE1.
  • the check valve R3 allows refrigerant to flow from the heating register 26 to the evaporator 22 according to the reheating method described above, but prevents refrigerant flow in the opposite direction, i.e. when the refrigeration system is operating in AC mode.
  • an expansion valve AE5 is also shown downstream of the evaporator 22 in dashed presen- tation.
  • Such an expansion valve AE5 can be arranged in all of the embodiments of the refrigeration system 10, 110 (FIGS. 1, 3, 4) shown here instead of the check valve R1 shown.
  • Fig. 4 shows the simplified refrigeration system with a further possible adaptation.
  • a check valve R4 can be provided, which is arranged between the internal heat exchanger 20 and the evaporator 22 or chiller 28.
  • the check valve R4 is flowed through by Käl tesch in AC operation of the refrigeration system 110.
  • the check valve R4 prevents a refrigerant flow from Fleizregister 26 to the floch pressure side of the inner heat exchanger 20.
  • the above-described reheating process (FIG. 2) can also be carried out with this further simplified configuration of the refrigeration system 110.
  • TKso can be set from 60% to 90%, in particular to a value between 70% and 85%, based on the maximum open position of 100%.
  • TKu can be 78% and TKo can be 82%, so that TKso covers a range from 78% to 82%.
  • the post-heating process described in the context of this application can be achieved by integrating further heat sinks, such as, for example, the chiller 28 and / or external heat exchanger 18.
  • further heat sinks such as, for example, the chiller 28 and / or external heat exchanger 18.
  • the possibility of a simplified structure of the refrigeration system 110 can also be considered.
  • the reheating process Reheat II (RH II) presented here is a reheating operation that is based on a reheating process Reheat I (RH I) contained in a parallel application, with an additional evaporator and thus an additional heat sink (here, for example, a chiller) is involved.

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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)
  • Chemical Kinetics & Catalysis (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

L'invention se rapporte à un procédé de réchauffage (500) permettant de faire fonctionner un système de réfrigération (10) pour un véhicule à moteur, le système de réfrigération (10) comprenant : un compresseur de fluide frigorigène (12), qui peut être relié, ou qui est relié, à un passage primaire (14) et à un passage secondaire (16) ; un échangeur de chaleur externe (18), qui est disposé dans le passage primaire (14) ; un évaporateur (22), qui est disposé dans le passage primaire (14) ; un condenseur de chauffage (26), qui est disposé dans le passage secondaire (16) ; au moins un volet de température mobile (34L, 34R), qui est disposé entre l'évaporateur (22) et le condenseur de chauffage (26) par rapport à une direction de flux d'air d'alimentation (L) ; au moins une vanne d'arrêt (AE4, A1 ; R3, R4), qui est disposée en aval du condenseur de chauffage (26) dans le passage secondaire (16) ; le procédé de réchauffage comprenant les étapes suivantes consistant : à régler la ou les vannes d'arrêt (AE4, A1 ; R3, R4) à une position dans laquelle, en aval du condenseur de chauffage (26), le fluide frigorigène s'écoule dans l'évaporateur (22) tout en contournant l'échangeur de chaleur externe (18) ; et à incorporer au moins un dissipateur thermique supplémentaire, en particulier d'un refroidisseur (28) fonctionnant en tant que pompe à chaleur d'eau et/ou de l'échangeur de chaleur externe (18) fonctionnant en tant qu'évaporateur de pompe à chaleur à air, lequel dissipateur thermique est disposé de manière fluidique en parallèle ou en série avec l'évaporateur (22). L'invention se rapporte en outre à un système de réfrigération (10) et à un véhicule à moteur équipé d'un tel système de réfrigération.
EP20785471.2A 2019-12-09 2020-09-28 Procédé de réchauffage permettant de faire fonctionner un système de réfrigération pour un véhicule à moteur, système de réfrigération et véhicule à moteur équipé d'un système de réfrigération de ce type Pending EP4072875A1 (fr)

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DE102019133546.9A DE102019133546A1 (de) 2019-12-09 2019-12-09 Nachheizverfahren zum Betreiben einer Kälteanlage für ein Kraftfahrzeug, Kälteanlage und Kraftfahrzeug mit einer solchen Kälteanlage
PCT/EP2020/077051 WO2021115655A1 (fr) 2019-12-09 2020-09-28 Procédé de réchauffage permettant de faire fonctionner un système de réfrigération pour un véhicule à moteur, système de réfrigération et véhicule à moteur équipé d'un système de réfrigération de ce type

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JP3538845B2 (ja) * 1991-04-26 2004-06-14 株式会社デンソー 自動車用空調装置
JP3985384B2 (ja) * 1998-09-24 2007-10-03 株式会社デンソー 冷凍サイクル装置
DE10126257A1 (de) * 2001-05-29 2002-12-05 Behr Gmbh & Co Heiz-/Kühlkreislauf für eine Klimaanlage eines Kraftfahrzeuges, Klimaanlage und Verfahren zur Regelung derselben
DE50212488D1 (de) * 2001-12-21 2008-08-21 Daimler Ag Aufbau und regelung einer klimaanlage für ein kraftfahrzeug
DE102010000990B4 (de) * 2010-01-19 2018-01-11 Hanon Systems Verfahren zum Betrieb eines Klimatisierungssystems
DE102010042127B4 (de) * 2010-10-07 2020-09-17 Audi Ag Kältemittelkreislauf einer Klimaanlage eines Kraftfahrzeuges
DE102011118162C5 (de) * 2011-11-10 2020-03-26 Audi Ag Kombinierte Kälteanlage und Wärmepumpe und Verfahren zum Betreiben der Anlage mit funktionsabhängiger Kältemittelverlagerung innerhalb des Kältemittelkreislaufes
FR2999689A1 (fr) * 2012-12-14 2014-06-20 Valeo Systemes Thermiques Circuit et procede de conditionnement d'air, notamment pour vehicule automobile
DE102014017446A1 (de) * 2014-11-26 2015-06-25 Daimler Ag Klimatisierungseinrichtung für ein Fahrzeug sowie Verfahren zum Betreiben einer solchen Klimatisierungseinrichtung
DE102015010552B3 (de) * 2015-08-14 2017-01-05 Audi Ag Verfahren zum Betreiben einer Klimaanlage für ein Fahrzeug
DE102015012995A1 (de) * 2015-10-08 2016-04-14 Daimler Ag Turbo-Klima-Anlage mit Nieder- und Hochdruck-Stufe
DE102016008743B3 (de) * 2016-07-14 2017-10-19 Audi Ag Verfahren zum Betreiben einer Kälteanlage eines Fahrzeugs
JP6723137B2 (ja) * 2016-10-20 2020-07-15 サンデン・オートモーティブクライメイトシステム株式会社 車両用空気調和装置
DE102018213232A1 (de) * 2018-08-07 2020-02-13 Audi Ag Verfahren zum Betreiben einer Kälteanlage für ein Fahrzeug mit einem eine Wärmepumpenfunktion aufweisenden Kältemittelkreislauf

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WO2021115655A1 (fr) 2021-06-17

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