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US 2026/0084487 A1Published application
Control method of heat pump system for vehicle
AssigneesHyundai Motor Company, Kia Corporation
InventorsJeawan KIM, Hochan AN, Soonbeom KWON, Yeon Ho KIM, Jeong Keun KIM, Gwi Taek KIM, Hoyoung JEONG, Man Hee PARK, Yeong Jun KIM, Jae Yeon KIM, Dong Jun SHIM
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Abstract
A control method of a heat pump system for a vehicle, which is applied with a gas injection device, can improve the performance and efficiency of the entire system by efficiently controlling the operation of the gas injection device depending on conditions when heating the vehicle interior.
Claims20
A control method of a heat pump system for a vehicle, the control method comprising:
- operating, by a controller, a normal heating mode in response that a user operates a heat pump system for heating a vehicle interior;
- determining, by the controller, whether an operation of a gas injection heating mode is possible based on data detected from a data detecting unit;
- based on that the controller concludes that the operation of the gas injection heating mode is possible, operating, by the controller, the gas injection heating mode by operating a gas injection device;
- checking, by the controller, a vehicle interior target temperature, and setting a target discharge air temperature based on the data detected from the data detecting unit;
- determining, by the controller, whether a vehicle interior air discharge temperature is lower than the target discharge air temperature;
- and
- increasing, by the controller, revolutions per minute (rpm) of a compressor, based on that the controller concludes that the vehicle interior air discharge temperature is lower than the target discharge air temperature.
4 more elements
A heat pump system comprising:
- a compressor configured to compress an introduced refrigerant;
- a condenser connected to the compressor through a refrigerant line, and configured to condense the introduced refrigerant;
- a first expansion valve connected to the condenser through the refrigerant line, and configured to selectively expand the introduced refrigerant;
- an evaporator connected to the first expansion valve through the refrigerant line, and configured to evaporate the introduced refrigerant;
- a gas injection device including a gas-liquid separator and disposed on the refrigerant line between the condenser and the first expansion valve, and configured to selectively expand the refrigerant supplied from the condenser and flow the expanded refrigerant and selectively supply a partial refrigerant among the supplied refrigerant to the compressor to increase a flow rate of the refrigerant circulating the refrigerant line;
- a supply line connecting the compressor and the gas-liquid separator;
- and
- a controller including a processor and configured for:,
- operating a normal heating mode in response that a user operates the heat pump system for heating a vehicle interior;
- determining whether an operation of a gas injection heating mode is possible based on data detected from a data detecting unit;
- based on that the controller concludes that the operation of the gas injection heating mode is possible, operating the gas injection heating mode by operating the gas injection device;
- checking a vehicle interior target temperature, and setting a target discharge air temperature based on the data detected from the data detecting unit;
- determining whether a vehicle interior air discharge temperature is lower than the target discharge air temperature;
- and
- increasing revolutions per minute (rpm) of the compressor, based on that the controller concludes that the vehicle interior air discharge temperature is lower than the target discharge air temperature.
12 more elements
Dependencies are inferred from the claim text.