Supercritical cooling circuit used in a vehicle comprises a compressor, a decompression unit with an electrical expansion valve, a bypass channel, a pressure valve, a temperature measuring unit and a control unit

摘要

Supercritical cooling circuit comprises a compressor (1), a decompression unit with an electrical expansion valve (4) with electrically controlled opening, a bypass channel (9) for forming a connection between a coolant channel on the high pressure side from an outlet side of the compressor to an inlet side of the valve with a coolant channel on the low pressure side from an outlet side of the valve to an inlet side of the compressor, a pressure valve (9a) arranged in the bypass channel, a temperature measuring unit (11) for measuring the temperature of the coolant leaving the compressor and a control unit (10). Preferred Features: The pressure valve is connected in parallel to the expansion valve.