A car air conditioning system

Abstract

A car air-conditioning system comprises a heating component temperature control circuit and a heat pump system with a refrigerant circulation loop. The heating component temperature control circuit and the heat pump system with the refrigerant circulation loop exchange heat through a double passageway heat exchanger. The car air-conditioning system comprises a refrigerating mode, a heating mode and a demist mode. The heat pump system with the refrigerant circulation loop comprises a compressor, a gas-liquid separator which is located in front of an air inlet of the compressor, a heater which is connected with an air outlet of the compressor, a compartment outer heat exchanger which is connected with the heater, a throttling component and a cooler. The heater and the cooler conduct heating, cooling or demisting on the compartment according to working condition requirements in the compartment. A refrigerant bypass passageway is arranged aiming at the cooler. The bypass passageway is opened in the heating mode operated by the heat pump system and is closed in the refrigerating mode and the demisting mode. Therefore, the heater just passes hot refrigerant, and the cooler just passes the cold refrigerant so as to avoid thermal shock and improve service life.

Description

technical field [0001] The invention relates to the technical field of automobile air conditioning, in particular to an electric automobile air conditioning system. Background technique [0002] With the development of low-carbon economy, more stringent requirements are put forward for energy saving and emission reduction. Electric vehicles will become one of the aspects of future automobile development due to their energy-saving and environmental protection features. However, since electric vehicles use batteries as a power source, their air-conditioning systems are also different from the original automotive air-conditioning systems. [0003] With the continuous improvement of the quality of life, people pay more and more attention to the comfort in the car compartment. Traditional internal combustion engine vehicles can use the waste heat of the internal combustion engine and the heat of the engine exhaust to heat the compartment, while the power of electric vehicles main...

AI Technical Summary

Problems solved by technology

[0004] However, in the various heating methods mentioned above, if an independent heat source is used, such as purely using PTC for heating, it will consume more battery energy, which will reduce the mileage of the car; if fuel heating is used, not only the heating efficiency is low, It will also pollute the environment and increase the load on the car

In addition, the current car air conditioner blows out cold air in the compartment during demisting, which will cause discomfort in the compartment when the weather is relatively cold.

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