EP3787915A1 - Dispositif de climatisation d'un véhicule automobile, en particulier d'un véhicule utilitaire, procédé de fonctionnement d'un tel dispositif de climatisation et véhicule automobile - Google Patents

Dispositif de climatisation d'un véhicule automobile, en particulier d'un véhicule utilitaire, procédé de fonctionnement d'un tel dispositif de climatisation et véhicule automobile

Info

Publication number
EP3787915A1
EP3787915A1 EP19723315.8A EP19723315A EP3787915A1 EP 3787915 A1 EP3787915 A1 EP 3787915A1 EP 19723315 A EP19723315 A EP 19723315A EP 3787915 A1 EP3787915 A1 EP 3787915A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
refrigerant
coolant
air conditioning
conveyor
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Withdrawn
Application number
EP19723315.8A
Other languages
German (de)
English (en)
Inventor
Jose Luis CALATAYUD
Thomas Frey
Michael Hafner
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.)
Mercedes Benz Group AG
Original Assignee
Daimler 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 Daimler AG filed Critical Daimler AG
Publication of EP3787915A1 publication Critical patent/EP3787915A1/fr
Withdrawn legal-status Critical Current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
    • B60H1/00357—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 [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3213—Control means therefor for increasing the efficiency in a vehicle heat pump
    • 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
    • B60H1/32—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
    • 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
    • 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
    • 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
    • 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
    • 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
    • B60H2001/00957—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 locations with heat exchange within the refrigerant circuit itself, e.g. cross-, counter-, or parallel heat exchange
    • 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
    • F25B2313/021—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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02331—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during cooling
    • 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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
    • F25B2313/02344—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during heating
    • 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

Definitions

  • Air conditioning device for a motor vehicle, in particular for a commercial vehicle, and method for operating such an air conditioning device and
  • the invention relates to an air conditioning device for a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a method for operating such an air conditioning device and a motor vehicle, in particular a commercial vehicle.
  • the air-conditioning device has a refrigerant circuit through which a refrigerant can flow, as well as at least one arranged in the refrigerant circuit and consequently by the refrigerant
  • the ambient air is air, which is located in the vicinity of the motor vehicle and, for example, the
  • the air conditioning device further comprises an arranged in the refrigerant circuit and consequently can be flowed through by the refrigerant inside heat exchanger, via which a
  • Heat exchange between the refrigerant and the interior of the motor vehicle to be supplied air can be done.
  • the air to be supplied to the interior can be tempered by means of the internal heat exchanger, so that by means of the
  • Interior heat exchanger tempered air is supplied to the interior or flows into the interior, the interior can be tempered.
  • the air-conditioning device furthermore has a coolant heat exchanger arranged in the refrigerant circuit, which is also arranged in a coolant circuit through which a coolant can flow. Consequently, the Coolant heat exchanger of the refrigerant and of the example formed as a liquid coolant flowed through. A heat exchange between the refrigerant and the coolant can take place via the coolant heat exchanger.
  • the air conditioning device has a arranged in the refrigerant circuit
  • the refrigerant can be promoted by the refrigerant circuit or is promoted.
  • the refrigerant circuit by means of which the refrigerant can be promoted by the refrigerant circuit or is promoted.
  • the refrigerant includes
  • Air conditioning device a valve device, by means of which at least one
  • Flow of the refrigerant can be influenced by the refrigerant circuit.
  • Heat exchanger for a refrigeration system In this case, separate heating pipes and cooling pipes are integrated in a single housing such that heat is transferred between the heating pipes and the cooling pipes.
  • Object of the present invention is to further develop an air conditioning device, a method and a motor vehicle of the type mentioned in such a way that a particularly advantageous and cost-effective manner, a particularly advantageous operation of the air conditioning device can be realized.
  • valve device is switchable at least between a cooling mode and a heating mode.
  • the cooling mode and the heating mode are operating modes of the air conditioning device, wherein in the
  • the first part of the refrigerant flows through the indoor heat exchanger, which operates in the cooling mode as an evaporator.
  • the first part of the refrigerant is evaporated by means of the inner heat exchanger.
  • the second part of the refrigerant flows through the working as an evaporator coolant heat exchanger, by means of which the second part is evaporated.
  • a flow of the first part is omitted by the coolant heat exchanger, and a flow of the second part through the
  • the refrigerant undergoes cooling by means of the outdoor heat exchanger.
  • the refrigerant is cooled by means of the outdoor heat exchanger by heat transfer from the refrigerant flowing through the outdoor heat exchanger via the outdoor heat exchanger to the ambient air.
  • the ambient air is air, which is in the environment of the outdoor heat exchanger, in particular the
  • the air conditioning air is cooled, whereupon, for example, the cooled air conditioning air is supplied to the interior, in particular such that the air conditioning air is introduced into the interior or that the air conditioning air flows into the interior. This allows the interior to be cooled.
  • the refrigerant in particular the second part, undergoes further heating.
  • the second part of the refrigerant is heated by means of the refrigerant heat exchanger, for example by a
  • the coolant is cooled, and the refrigerant or the second part is heated.
  • an operation of the outdoor heat exchanger as Evaporator is omitted.
  • the outdoor heat exchanger operates as a cooler, by means of which the refrigerant is to be cooled or cooled in the cooling mode.
  • External heat exchanger operates as a condenser, by means of which the refrigerant is to be condensed or is condensed, in particular, when as the refrigerant, a conventional or conventional refrigerant is used.
  • the outdoor heat exchanger when used as the refrigerant C0 2 (carbon dioxide), the outdoor heat exchanger operates in the cooling mode, for example, as a gas cooler in transcritical operation and as a condenser in subcritical operation, by means of which the refrigerant formed as carbon dioxide is to be cooled or cooled.
  • the conveyor is in the cooling mode during operation or active and promotes the refrigerant in the cooling mode through the refrigerant circuit.
  • the conveyor operates in the cooling mode as a compressor or compressor, by means of which in the cooling mode, the refrigerant is to be compressed or compressed.
  • the refrigerant flows from the conveyor through the
  • the outdoor heat exchanger which operates in the heating mode as an evaporator, and then to and through the conveyor. Since the outdoor heat exchanger operates as an evaporator in the heating mode, in the heating mode, the refrigerant is discharged by means of the
  • Heating mode operation of the indoor heat exchanger as evaporator is omitted.
  • the conveyor in the heating mode is active or in operation, so that in the heating mode, the refrigerant is conveyed by the conveyor through the refrigerant circuit.
  • the conveyor operates in the heating mode as a compressor or compressor, by means of which the refrigerant is to be compressed in the heating mode or is compressed.
  • the refrigerant undergoes cooling by means of the coolant heat exchanger, in particular in that a heat transfer from the
  • Coolant takes place. Further, in the heating mode, the refrigerant undergoes cooling by means of the indoor heat exchanger, so that in the heating mode, the refrigerant is cooled by the indoor heat exchanger. This is done in particular such that in the Heating mode, a heat transfer from the refrigerant flowing through the inner heat exchanger via the inner heat exchanger to the air conditioning air. As a result, the air conditioning air is heated, and the refrigerant is cooled. As a result, the heated air conditioning air is supplied, for example, the interior, that is, introduced into the interior, so that the heated air conditioning air flows into the interior. As a result, the interior can be heated by means of the heated air conditioning air. For example, the air conditioning air flows through the indoor heat exchanger in the cooling mode and the heating mode. In the heating mode learn the
  • Refrigerant means of the outdoor heat exchanger, which operates in the heating mode as an evaporator and thus evaporates the refrigerant, a further heating, in particular such that via the outdoor heat exchanger, a heat transfer from the ambient air to the refrigerant flowing through the outdoor heat exchanger.
  • the indoor heat exchanger operates as a cooler by means of which the refrigerant is cooled in the heating mode.
  • the refrigerant is cooled in the heating mode.
  • Indoor heat exchanger in the heating mode work as a condenser, by means of which in the heating mode, the refrigerant is to be condensed or condensed, in particular, when the refrigerant is a conventional refrigerant.
  • the refrigerant is, for example, carbon dioxide
  • the internal heat exchanger in the heating mode operates, for example, as a gas cooler in transcritical operation and as a condenser in subcritical operation, by means of which the carbon dioxide is to be cooled
  • the air conditioning device operates, for example, at least in the heating mode as a heat pump or as heat pump heating, by means of which heat from the ambient air is used to heat the air conditioning air and thus the interior.
  • the heat pump uses heat from the preferably warm coolant to heat the interior.
  • the interior can be heated particularly effectively and energy-efficiently.
  • the air conditioning device operates as
  • Refrigerating machine in particular as a compression refrigerating machine, by means of which the air conditioning air and thus the interior can be cooled effectively and efficiently. Since arranged in the coolant circuit coolant heat exchanger in the
  • Air conditioning device can be realized in both the cooling mode and in the heating mode.
  • the air conditioning device according to the invention is thus particularly advantageous for use in a hybrid or electric vehicle. As a result of the air conditioning device, the interior of energy-efficient air conditioning
  • Electric vehicles can be heated much more efficiently in the winter by means of heat pumps than by other electric heating elements, since the degree of efficiency of
  • Heat pumps are usually greater than one. As a result, for a purely electrical and thus emission-free operation of the respective motor vehicle, the range over which the respective motor vehicle can be driven purely electrically, considerably increased.
  • the cooling mode for example, a summer operation to cool the interior in the summer and thus at high ambient or outside temperatures.
  • the heating mode is thus, for example, a winter operation in the winter and thus at low
  • Air conditioner or heat pump for dehumidification works in the air conditioning mode, and the air must be reheated by a further heat source, before it enters the interior. Dehumidification is therefore special
  • the air conditioning device In the air conditioning device according to the invention, it is now provided to use the same heat exchanger in the form of the outdoor heat exchanger, the indoor heat exchanger and the coolant heat exchanger both for winter operation and for summer operation, being switched by the valve means and by appropriate lines and connecting elements between the heating mode and the cooling mode be able to use the same heat exchanger to cool the interior optionally energy efficient and heat energy efficient.
  • the air conditioning device In the heating mode, the air conditioning device according to the invention operates in particular as an air-to-air heat pump, as contained in the ambient air heat is transferred by the intermediary of the refrigerant to the air conditioning air to these and thus the
  • Heat exchange between the refrigerant and the coolant is used.
  • a particularly efficient operation of the air conditioning device can be represented.
  • the coolant may, for example, for cooling a drive component of the
  • the coolant can be used for at least one other purpose, for example for the air conditioning of the driving workstation by means of a coolant-air heat exchanger.
  • the coolant can be heated by means of the coolant heat exchanger. The heated coolant can then be used as a heat source for heating the batteries or for heating the driving workstation and / or as a floor heating and / or for heating, in particular reheating of air, in particular in a reheat operation of a rooftop system.
  • the coolant is a liquid which has at least water.
  • a particularly efficient operation can be represented.
  • the integration of a further heat exchanger on a high-pressure side, in particular on a high-pressure refrigerant side, of the refrigerant circuit is conceivable, in particular with connection to the water circuit also called
  • Air conditioning device having an inner heat exchanger.
  • the inner one is
  • Heat exchanger is also referred to as an internal heat exchanger, internal heat exchanger or internal heat exchanger.
  • the refrigerant flows from the conveyor through the outdoor heat exchanger and then through the inner heat exchanger. Thereafter, the first part of the refrigerant flows through the as
  • the second part of the refrigerant flows through the working as an evaporator coolant heat exchanger. Thereafter, the parts combine and then flow through the inner heat exchanger and then to and through the conveyor.
  • the refrigerant experiences downstream of the External heat exchanger and upstream of the inner heat exchanger and the coolant heat exchanger by means of the inner heat exchanger, a cooling, so that the refrigerant downstream of the outdoor heat exchanger and upstream of the
  • Conveyor is heated by means of the internal heat exchanger. Operation of the internal heat exchanger as the evaporator is omitted in both the heating mode and the cooling mode.
  • the refrigerant flows from the conveyor through the
  • the refrigerant undergoes cooling in the heating mode downstream of the indoor heat exchanger and upstream of the outdoor heat exchanger by means of the internal heat exchanger, so that the refrigerant in the heating mode by means of the internal heat exchanger downstream of the inner heat exchanger and upstream
  • Outdoor heat exchanger is cooled. Downstream of the outdoor heat exchanger and upstream of the conveyor, the refrigerant undergoes heating in the heating mode by means of the internal heat exchanger, so that in the heating mode, the refrigerant is heated downstream of the outdoor heat exchanger and upstream of the conveyor by means of the internal heat exchanger.
  • the refrigerant is conveyed by the conveyor through the refrigerant circuit.
  • the refrigerant flows in the Wiederauf remplimodus in the same direction by the conveyor into which the refrigerant flows in the heating mode and in the cooling mode by the conveyor.
  • the refrigerant flows in the same direction through the conveyor.
  • the refrigerant flows from the conveyor through the coolant heat exchanger, then through the Outdoor heat exchanger, then through the inner heat exchanger and then to and through the conveyor.
  • the indoor heat exchanger operates as an evaporator to dehumidify the air.
  • the coolant heat exchanger operates as a cooler, in particular as a gas cooler, to heat the coolant.
  • the heated coolant then passes through a coolant-air heat exchanger to reheat the air.
  • the coolant undergoes heating by means of the refrigerant heat exchanger, so that in the reheat mode, the refrigerant is released by means of the
  • Outdoor heat exchanger a cooling, for example, over the
  • the air conditioning air is used by means of the
  • the inner heat exchanger is provided, it is in further
  • Air conditioning device has at least or exactly two arranged in the refrigerant circuit 3/2-way valves. This allows the different
  • Expansion valve is designed, for example, as an adjustable, in particular controllable or regulated, expansion valve.
  • Motor vehicle is arranged on the roof, which is also referred to as a vehicle roof.
  • the invention also includes a method for operating an air-conditioning device according to the invention.
  • the invention also preferably includes a motor vehicle designed as a commercial vehicle, which has at least one air conditioning device according to the invention.
  • Air conditioning device are to be regarded as advantages and advantageous embodiments of the motor vehicle according to the invention and vice versa.
  • Fig. 1 is a schematic representation of an inventive
  • Air conditioning device for a motor vehicle wherein in Fig. 1 a
  • Cooling mode of the air conditioning device is illustrated
  • FIG. 2 illustrates a heating mode of the air conditioning device
  • FIG. 3 is a schematic representation of the air conditioning device, wherein in FIG.
  • FIG. 1 shows a schematic representation of an air-conditioning device 10 for a motor vehicle, which is preferably designed as a commercial vehicle.
  • the motor vehicle is designed as an electric vehicle and thus driven purely electrically.
  • a particularly efficient operation of the air conditioning device can be realized, so that a particularly high electrical range, over which the motor vehicle can be driven purely electrically, can be represented.
  • the air-conditioning device 10 has a refrigerant circuit 12, through which a refrigerant can flow, and a conveying device, which is arranged in the refrigerant circuit 12 and designed as a pump 14, by means of which the refrigerant is to be conveyed or conveyed through the refrigerant circuit 12.
  • a refrigerant circuit 12 through which a refrigerant can flow
  • a conveying device which is arranged in the refrigerant circuit 12 and designed as a pump 14, by means of which the refrigerant is to be conveyed or conveyed through the refrigerant circuit 12.
  • Cooling mode A second of the modes of operation is a heating mode illustrated in FIG. 2, the third mode of operation being a reheat mode, shown in FIG. 3, also referred to as reheat mode.
  • the pump 14 In the operating modes, the pump 14 is in operation, so that in the respective operating mode, the refrigerant is conveyed through the pump 14 through the refrigerant circuit 12 and thereby through the pump 14 itself.
  • an arrow 16 illustrates a flow direction into which the refrigerant flows in the three operating modes through the pump 14 or is conveyed through it by the pump 14.
  • the different modes of operation are thus not by a flow direction reversal of the pump 14, but by means of a valve device 18 or by corresponding switching of the valve device 18 and by corresponding, fluidly interconnected
  • the air conditioning device 10 which is also referred to as the air conditioning system, has at least one outdoor heat exchanger 20, which is arranged in the refrigerant circuit 12 and can therefore be flowed through by the refrigerant, via which a heat exchange between the refrigerant and ambient air can take place.
  • the ambient air is air, which is located in the environment 22 of the outdoor heat exchanger 20 and in particular the motor vehicle and, for example, the outdoor heat exchanger 20 and flows around, in particular when driving the motor vehicle.
  • the outdoor heat exchanger 20 is a first heat exchanger of the air conditioning device.
  • the air-conditioning device 10 has a flow in the refrigerant circuit 12 and, consequently, can be flowed through by the refrigerant
  • Inner heat exchanger 24 via which a heat exchange between the
  • the air to be supplied to the interior of the motor vehicle is also referred to as air conditioning air, since the air conditioning air supplied to the interior, that is in the
  • the interior is initiated.
  • the interior can be tempered by means of the air conditioning air, that is, optionally cooled and heated.
  • the air conditioning air is, for example, by means of a not visible in the figures blower of the
  • Air conditioning device 10 promoted.
  • the air conditioning air is sucked in, for example by means of the blower from the environment 22, from the interior or from the environment 22 and the interior and conveyed to or into the interior.
  • the indoor heat exchanger 24 is a second heat exchanger of
  • Air conditioning device 10 The motor vehicle is designed, for example, as a bus, in particular as a bus, whose interior is particularly large. Despite this size of the interior, one of the interior spaces can be heated efficiently by means of the air-conditioning device 10. In the vehicle vertical direction upward, the interior is limited, for example, by a roof of the motor vehicle, also referred to as a vehicle roof. In this case, the air-conditioning device 10 is designed, for example, as a rooftop installation and accordingly arranged on the roof.
  • the air-conditioning device 10 furthermore has a coolant circuit 26 which can be flowed through in the refrigerant circuit 12 and in a coolant which can be flowed through by a coolant
  • coolant heat exchanger 28 which is traversed by both the refrigerant and the coolant or in the respective
  • the coolant is preferably a liquid and comprises at least water.
  • the coolant can be used for example for cooling a drive component of the motor vehicle.
  • the coolant can be used for at least one other purpose, for example for the air conditioning of the driving workstation by means of a coolant-air heat exchanger.
  • the coolant can be heated by means of the coolant heat exchanger. The heated coolant can then be used as a heat source for heating the batteries or for heating the driving workstation and / or as a floor heating and / or for heating, in particular reheating of air, in particular in a reheat operation of a rooftop system.
  • the motor vehicle is driven by means of the drive component.
  • Drive component is, for example, an electric machine by means of which the motor vehicle can be driven electrically.
  • the drive component comprises at least one battery, by means of which the electrical machine can be supplied with stored in the battery electrical energy.
  • the coolant heat exchanger 28 a heat exchange between the
  • Air conditioning device 10 the valve device 18, by means of which at least one flow of the refrigerant through the refrigerant circuit 12 can be influenced.
  • valve device 18 In order to be able to air-condition the interior in a particularly energy-efficient manner and thus to temper it, the valve device 18 is switched in the cooling mode such that it releases or blocks the lines of the air-conditioning device 10 through which the refrigerant can flow such that the refrigerant in the cooling mode of the Pump 14 via a 2/3-way valve 42 to and through the outdoor heat exchanger 20 and then via a check valve 40 to and through an inner
  • Heat exchanger 30 of the air conditioning device 10 flows.
  • the air conditioning device 10 also includes the inner heat exchanger 30, which is arranged in the refrigerant circuit 12 and consequently can be flowed through by the refrigerant. After the refrigerant has passed through the inner heat exchanger 30, the refrigerant or its flow divides into a first part 32 and a second part 34 in the cooling mode. Since the refrigerant is only downstream of the inner heat exchanger 30, which is arranged in the refrigerant circuit 12 and consequently can be flowed through by the refrigerant. After the refrigerant has passed through the inner heat exchanger 30, the refrigerant or its flow divides into a first part 32 and a second part 34 in the cooling mode. Since the refrigerant is only downstream of the inner
  • Heat exchanger 30 divides the parts 32 and 34, the parts 32 and 34 flow together from the pump 14 to the and in particular through the
  • the first part 32 flows through an expansion valve 36 to and through the
  • Inner heat exchanger 24 which operates in the cooling mode as an evaporator.
  • the inner heat exchanger 24 which is arranged in the refrigerant circuit 12
  • Expansion valve 36 associated with the air conditioning device 10, so that, for example, in the cooling mode, the first part of the refrigerant by means of the expansion valve 36 and by means of the internal heat exchanger 24 is evaporated.
  • Expansion valve 38 to and through the coolant heat exchanger 28, which operates in the cooling mode as an evaporator.
  • the expansion valve 38 of the air conditioning device 10 is assigned to the coolant heat exchanger 28, so that in the
  • Coolant heat exchanger 28 the second part 34 flows through a 2/3-way valve 44 and then merges with the first part 32. In other words, after the first part 32 through the inner heat exchanger 24 and the second part 34 through the
  • Coolant heat exchanger 28 has flowed, the first part 32 and the second part 34 reunite to a total flow of the refrigerant, the total flow has already flowed from the pump 14 through the outdoor heat exchanger 20 and through the inner heat exchanger 30. The total flow and thus the parts 32 and 34 then flow downstream of the indoor heat exchanger 24 and downstream of the
  • Coolant heat exchanger 28 through the inner heat exchanger 30 and then to and through the pump 14, whereby the refrigerant circuit 12 is closed.
  • the refrigerant is cooled by means of the outdoor heat exchanger by heat from the refrigerant to the ambient air passes through the outdoor heat exchanger 20. Downstream of the outdoor heat exchanger 20 and upstream of the indoor heat exchanger 24 and the coolant heat exchanger 28, the refrigerant by means of the inner
  • Heat exchanger 30 cooled.
  • the first part is heated by a heat transfer from the air conditioning air over the
  • Coolant heat exchanger 28 is heated by a heat transfer from the coolant via the coolant heat exchanger 28 takes place to the refrigerant. Downstream of
  • Heat exchanger 30 is heated.
  • the valve device 18 comprises the shut-off valve 40, which is arranged downstream of the outdoor heat exchanger 20 and upstream of the internal heat exchanger 30 or of the internal heat exchanger 24 and the coolant heat exchanger 28 with respect to the cooling mode.
  • the shut-off valve 40 which is arranged downstream of the outdoor heat exchanger 20 and upstream of the internal heat exchanger 30 or of the internal heat exchanger 24 and the coolant heat exchanger 28 with respect to the cooling mode.
  • the valve device 18 comprises the shut-off valve 40, which is arranged downstream of the outdoor heat exchanger 20 and upstream of the internal heat exchanger 30 or of the internal heat exchanger 24 and the coolant heat exchanger 28 with respect to the cooling mode.
  • the shut-off valve 40 which is arranged downstream of the outdoor heat exchanger 20 and upstream of the internal heat exchanger 30 or of the internal heat exchanger 24 and the coolant heat exchanger 28 with respect to the cooling mode.
  • Valve means 18 the expansion valves 36 and 38 and the at least or exactly two 2/3-way valves 42 and 44. Based on the cooling mode, the 2/3-way valve 42 is disposed downstream of the pump 14 and upstream of the outdoor heat exchanger 20.
  • the 2/3-way valve 44 is downstream of
  • valve device 18 includes an expansion valve 46 associated with the outdoor heat exchanger 20 and a
  • Fig. 2 shows the heating mode.
  • the coolant in the cooling mode is cold and thus has a first temperature
  • the coolant is, for example, warm in the heating mode and accordingly has a second temperature greater than the first temperature.
  • the coolant is warm, so it is, for example, a larger compared to the first temperature third
  • Temperature which correspond to the second temperature, may be greater than the second temperature or less than the second temperature.
  • the refrigerant flows from the pump 14 via the 2/3-way valve 42 to and through the coolant heat exchanger 28, then via the 2/3-way valve 44 to and through the indoor heat exchanger 24, then via the expansion valve 36 to and through the inner heat exchanger 30, then via the expansion valve 46 to and through the outdoor heat exchanger 20, which operates in the heating mode as an evaporator, then through the inner heat exchanger 30 and then to and through the pump 14.
  • Outdoor heat exchanger 20 is expanded. In the heating mode, the refrigerant is heated by means of the outdoor heat exchanger 20 by a heat transfer from the
  • Ambient air takes place via the outdoor heat exchanger 20 to the refrigerant.
  • the refrigerant is cooled by means of the indoor heat exchanger 24, by a heat transfer from the refrigerant via the indoor heat exchanger 24 to the
  • Air conditioning air takes place. As a result, the air conditioning air is heated. If the heated air conditioning air is then supplied to the interior, the interior can be heated thereby. Further, the refrigerant is cooled in the heating mode by means of the refrigerant heat exchanger 28 by heat transfer from the refrigerant via the coolant heat exchanger 28 to the coolant. Downstream of
  • the refrigerant is heated by means of the inner heat exchanger 30.
  • the shut-off valve 48 is disposed downstream of the indoor heat exchanger 24 and upstream of the internal heat exchanger 30 and the outdoor heat exchanger 20, respectively.
  • the shut-off valve 40, the expansion valve 36 and the expansion valve 38 are opened while the shut-off valve 48 and the expansion valve 46 are closed.
  • the expansion valve 46 and the shut-off valve 48 are opened, while the
  • Expansion valve 36 is opened while the shut-off valve 48 and the expansion valves 38 and 46 are closed.
  • the refrigerant flows from the pump 14 via the 2/3-way valve 42 through the coolant heat exchanger 28, then via the 2/3-way valve 44 through the outdoor heat exchanger 20, then via the check valve 40 through the inner heat exchanger 30, then over the
  • Expansion valve 36 through the inner heat exchanger 24, then through the inner heat exchanger 30 and then back to and through the pump 14th
  • the outdoor heat exchanger 20 is a first heat exchanger
  • the indoor heat exchanger 24 is a second heat exchanger
  • the coolant heat exchanger 28 is a third heat exchanger of the air conditioning device 10.
  • the inner heat exchanger 20 is a first heat exchanger
  • the indoor heat exchanger 24 is a second heat exchanger
  • the coolant heat exchanger 28 is a third heat exchanger of the air conditioning device 10.
  • the inner heat exchanger 20 is a first heat exchanger
  • the indoor heat exchanger 24 is a second heat exchanger
  • the coolant heat exchanger 28 is a third heat exchanger of the air conditioning device 10.
  • Heat exchanger 30, a fourth heat exchanger of the air conditioning device 10.
  • the refrigerant is cooled by means of the outdoor heat exchanger 20. Downstream of the outdoor heat exchanger 20 and upstream of the indoor heat exchanger 24, the refrigerant is cooled by means of the internal heat exchanger 30.
  • the refrigerant is heated by means of the inner heat exchanger 30.
  • the coolant heat exchanger 28 the refrigerant is cooled.

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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)

Abstract

L'invention concerne un dispositif de climatisation (10) d'un véhicule automobile. Le dispositif de climatisation comprend un circuit d'agent réfrigérant (12) à travers lequel un agent réfrigérant peut circuler, au moins un échangeur de chaleur extérieur (20) disposé dans le circuit d'agent réfrigérant (12) et destiné à l'échange de chaleur entre l'agent réfrigérant et l'air ambiant, un échangeur de chaleur intérieur (24) disposé dans le circuit d'agent réfrigérant (12) et destiné à échanger de la chaleur entre l'agent réfrigérant et l'air à amener dans l'espace intérieur du véhicule automobile, un échangeur de chaleur d'agent refroidisseur (28) disposé dans le circuit d'agent réfrigérant (12) et dans un circuit d'agent refroidisseur (26) à travers lequel un agent refroidisseur peut circuler, pour l'échange de chaleur entre l'agent réfrigérant et l'agent refroidisseur, un moyen de transport (14) disposé dans le circuit d'agent réfrigérant (12) et destiné à transporter l'agent réfrigérant à travers le circuit d'agent réfrigérant (12), et un moyen formant soupape (18) permettant d'influer sur au moins un écoulement de l'agent réfrigérant à travers le circuit d'agent réfrigérant (12).
EP19723315.8A 2018-04-30 2019-04-10 Dispositif de climatisation d'un véhicule automobile, en particulier d'un véhicule utilitaire, procédé de fonctionnement d'un tel dispositif de climatisation et véhicule automobile Withdrawn EP3787915A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018003530.2A DE102018003530A1 (de) 2018-04-30 2018-04-30 Klimatisierungseinrichtung für ein Kraftfahrzeug, insbesondere für ein Nutzfahrzeug, sowie Verfahren zum Betreiben einer solchen Klimatisierungseinrichtung und Kraftfahrzeug
PCT/EP2019/059160 WO2019211069A1 (fr) 2018-04-30 2019-04-10 Dispositif de climatisation d'un véhicule automobile, en particulier d'un véhicule utilitaire, procédé de fonctionnement d'un tel dispositif de climatisation et véhicule automobile

Publications (1)

Publication Number Publication Date
EP3787915A1 true EP3787915A1 (fr) 2021-03-10

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EP19723315.8A Withdrawn EP3787915A1 (fr) 2018-04-30 2019-04-10 Dispositif de climatisation d'un véhicule automobile, en particulier d'un véhicule utilitaire, procédé de fonctionnement d'un tel dispositif de climatisation et véhicule automobile

Country Status (3)

Country Link
EP (1) EP3787915A1 (fr)
DE (1) DE102018003530A1 (fr)
WO (1) WO2019211069A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111251823B (zh) * 2020-01-19 2022-02-18 华为数字能源技术有限公司 一种热管理系统及电动汽车

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012008878A1 (de) 2012-05-02 2013-11-07 Man Truck & Bus Ag Kreislaufsystem für ein Nutzfahrzeug
DE102014203895B4 (de) 2014-03-04 2018-08-16 Konvekta Ag Kälteanlage
DE102015015125A1 (de) * 2015-11-21 2017-05-24 Audi Ag Fahrzeugklimaanlage
DE102015122721B4 (de) * 2015-12-23 2019-09-05 Hanon Systems Klimatisierungssystem eines Kraftfahrzeugs und Verfahren zum Betreiben des Klimatisierungssystems

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DE102018003530A1 (de) 2019-10-31
WO2019211069A1 (fr) 2019-11-07

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