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EP-4737143-A1 - AIR CONDITIONING SYSTEM FOR MOTOR VEHICLE

EP4737143A1EP 4737143 A1EP4737143 A1EP 4737143A1EP-4737143-A1

Abstract

An air conditioning system (01) for a motor vehicle, comprising a refrigerant circuit (10). The refrigerant circuit (10) comprises a compressor (100), a first heat exchanger assembly (110), an evaporator-condenser (120), and a multi-way valve (130); the first heat exchanger assembly (110) comprises a first expansion device (1101) and an internal evaporator (1102); the internal evaporator (1102) is located downstream of the first expansion device (1101); the multi-way valve (130) comprises an inlet end (1301), a first outlet (1302), and a second outlet (1303); the inlet end (1301) is connected to a position downstream of the compressor (100); the evaporator-condenser (120) and the first expansion device (1101) are sequentially arranged downstream of the first outlet (1302); and an internal condenser (140) and the first expansion device (1101) are sequentially arranged downstream of the second outlet (1303). According to the air conditioning system (01), the working mode can be flexibly switched, and there is no need to additionally provide an auxiliary heating element in a heating mode, thereby achieving efficient system performance.

Inventors

  • WAN, Xuanchen
  • XUE, Gaoqiang

Assignees

  • Valeo Automotive Air Conditioning Hubei Co. Ltd.

Dates

Publication Date
20260506
Application Date
20240625

Claims (11)

  1. An air conditioning system (01) for a motor vehicle, characterized in that the air conditioning system comprises: a refrigerant circuit (10), the refrigerant circuit (10) comprising: a compressor (100); a first heat exchanger assembly (110) comprising a first expansion device (1101) and an internal evaporator (1102), wherein the internal evaporator (1102) is located downstream of the first expansion device (1101); an evaporator-condenser (120); and a multi-way valve (130) comprising an inlet end (1301), a first outlet (1302), and a second outlet (1303), wherein the inlet end (1301) is connected downstream of the compressor (100); wherein the evaporator-condenser (120) and the first expansion device (1101) are sequentially arranged downstream of the first outlet (1302); and an internal condenser (140) and the first expansion device (1101) are sequentially arranged downstream of the second outlet (1303).
  2. The air conditioning system (01) for the motor vehicle as claimed in claim 1, characterized in that the air conditioning system further comprises an airflow channel (150), and both the internal condenser (140) and the internal evaporator (1102) are disposed in the airflow channel (150), wherein the internal condenser (140) is located downstream of the internal evaporator (1102) along a flow direction of airflow.
  3. The air conditioning system (01) for the motor vehicle as claimed in claim 1, characterized in that a second expansion device (160) and the evaporator-condenser (120) are sequentially arranged downstream of the internal evaporator (1102), wherein the first expansion device (1101), the internal evaporator (1102), the second expansion device (160), the evaporator-condenser (120) and the compressor (100) are sequentially connected in series.
  4. The air conditioning system (01) for the motor vehicle as claimed in claim 1, characterized in that the air conditioning system (01) further comprises a second heat exchanger assembly (170) and a coolant circuit (20); the second heat exchanger assembly (170) comprises a third expansion device (1701) and a chiller (1702), and the chiller (1702) is located downstream of the third expansion device (1701); and the second heat exchanger assembly (170) is connected in parallel with the first heat exchanger assembly (110) in the refrigerant circuit (10), wherein the chiller (1702) is arranged between the refrigerant circuit (10) and the coolant circuit (20) to allow a fluid in the refrigerant circuit (10) to exchange heat with a fluid in the coolant circuit (20).
  5. The air conditioning system (01) for the motor vehicle as claimed in claim 4, characterized in that the air conditioning system (01) further comprises a water condenser (180), and the water condenser (180) is located between downstream of the compressor (100) in the refrigerant circuit (10) and the inlet end (1301) of the multi-way valve (130), and the water condenser (180) is arranged between the refrigerant circuit (10) and the coolant circuit (20) to allow the fluid in the refrigerant circuit (10) to exchange heat with the fluid in the coolant circuit (20).
  6. The air conditioning system (01) for the motor vehicle as claimed in claim 5, characterized in that the coolant circuit (20) comprises: a valve assembly (210); and an electric motor tube section (211), a radiator tube section (212), a chiller tube section (213), a battery tube section (214), and a water condenser tube section (215) which are connected through the valve assembly (210).
  7. The air conditioning system (01) for the motor vehicle as claimed in claim 6, characterized in that the valve assembly (210) comprises a first operating mode (201), and in the first operating mode (201), the electric motor tube section (211) and the radiator tube section (212) are sequentially connected in series through the valve assembly (210) to form a first coolant sub-circuit, the radiator tube section (213) is connected in series with the battery tube section (214) through the valve assembly (210) to form a second coolant sub-circuit, and the water condenser tube section (215) is connected in parallel with the electric motor tube section (211).
  8. The air conditioning system (01) for the motor vehicle as claimed in claim 6, characterized in that the valve assembly (210) comprises a second operating mode (202), and in the second operating mode (202), the chiller tube section (213) is connected in series with the battery tube section (214) through the valve assembly (210) to form a second coolant sub-circuit, the electric motor tube section (211) and the radiator tube section (212) are connected in series through the valve assembly (210) to form a third coolant sub-circuit, and the water condenser tube section (215) is disconnected from both the second coolant sub-circuit and the third coolant sub-circuit.
  9. The air conditioning system (01) for the motor vehicle as claimed in claim 6, characterized in that the valve assembly (210) comprises a third operating mode (203), and in the third operating mode (203), the battery tube section (214), the chiller tube section (213), the electric motor tube section (211), and the radiator tube section (212) are sequentially connected in series through the valve assembly (210) to form a fourth coolant sub-circuit, and the water condenser tube section (215) is disconnected from the fourth coolant sub-circuit.
  10. The air conditioning system (01) for the motor vehicle as claimed in claim 6, characterized in that the valve assembly (210) comprises a fourth operating mode (204), and in the fourth operating mode (204), the battery tube section (214), the chiller tube section (213), and the electric motor tube section (211) are sequentially connected in series through the valve assembly (210) to form a fifth coolant sub-circuit, and both the water condenser tube section (215) and the radiator tube section (212) are disconnected from the fifth coolant sub-circuit.
  11. The air conditioning system (01) for the motor vehicle as claimed in claim 6, characterized in that the valve assembly (210) comprises a fifth operating mode (205), and in the fifth operating mode (205), the battery tube section (214), the chiller tube section (213), and the water condenser tube section (215) are sequentially connected in series through the valve assembly (210) to form a sixth coolant sub-circuit, and both the electric motor tube section (211) and the radiator tube section (212) are disconnected from the sixth coolant sub-circuit.

Description

Technical Field Embodiments of the present utility model relate to an air conditioning system for a motor vehicle. Background Art With the rapid development of the manufacturing industry, the provision of air conditioning equipment in a motor vehicle allows for flexible control of the temperature, humidity, etc. of the airflow inside the driver's cab. The air conditioning equipment comprises an air conditioning circuit. During the process of controlling the air conditioning circuit, designing a solution so that the airflow temperature and state inside the driver's cab can be independently controlled while reducing reliance on external auxiliary equipment and optimizing the design structure of the air conditioning circuit, has become a research topic requiring continuous breakthroughs. Summary of the Utility Model Typically, when a refrigerant circuit is in a heating mode, it is difficult for an air conditioning system using auxiliary heating equipment to independently control the air temperature, and the control performance of an air conditioning circuit needs to be improved. Also, the system design of the air conditioning system is relatively complex, and its structural layout needs to be optimized. An embodiment of the present utility model provides an air conditioning system for a motor vehicle. An embodiment of the present utility model provides an air conditioning system for a motor vehicle, comprising: a refrigerant circuit, the refrigerant circuit comprising a compressor, a first heat exchanger assembly, an evaporator-condenser and a multi-way valve, wherein the first heat exchanger assembly comprises a first expansion device and an internal evaporator, and the internal evaporator is located downstream of the first expansion device; the multi-way valve comprises an inlet end, a first outlet, and a second outlet, and the inlet end is connected downstream of the compressor; the evaporator-condenser and the first expansion device are sequentially arranged downstream of the first outlet; and an internal condenser and the first expansion device are sequentially arranged downstream of the second outlet. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, the air conditioning system further comprises an airflow channel, and both the internal condenser and the internal evaporator are disposed in the airflow channel, wherein the internal condenser is located downstream of the internal evaporator along a flow direction of airflow. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, a second expansion device and the evaporator-condenser are sequentially arranged downstream of the internal evaporator, wherein the first expansion device, the internal evaporator, the second expansion device, the evaporator-condenser and the compressor are sequentially connected in series. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, the air conditioning system further comprises a second heat exchanger assembly and a coolant circuit; the second heat exchanger assembly comprises a third expansion device and a chiller, and the chiller is located downstream of the third expansion device; and the second heat exchanger assembly is connected in parallel with the first heat exchanger assembly in the refrigerant circuit, wherein the chiller is arranged between the refrigerant circuit and the coolant circuit to allow a fluid in the refrigerant circuit to exchange heat with a fluid in the coolant circuit. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, the air conditioning system further comprises a water condenser, and the water condenser is located between downstream of the compressor in the refrigerant circuit and the inlet end of the multi-way valve, and the water condenser is arranged between the refrigerant circuit and the coolant circuit to allow the fluid in the refrigerant circuit to exchange heat with the fluid in the coolant circuit. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, the coolant circuit comprises: a valve assembly; and an electric motor tube section, a radiator tube section, a chiller tube section, a battery tube section, and a water condenser tube section which are connected through the valve assembly. For example, according to the air conditioning system for the motor vehicle provided in at least one embodiment of the present utility model, the valve assembly comprises a first operating mode, and in the first operating mode, the electric motor tube section and the radiator tube section are sequentially connected in series through the valve assembly to form a