Cooling unit for vehicle air conditioning

摘要

The cooling unit includes at the outlet of the safety valve (17) a pressure container (24) for collecting up the gaseous coolant which is discharged through the safety valve. The connection between pressure container and safety valve outlet is through a condenser (23). A blower (26) associated with the condenser for producing cooling air can be switched on by a pressure switch having closing contact and pressure sensor. On sensing a pressure behind the safety valve outlet the pressure sensor closes the closing contact in the circuit of the blower. A further compressor (22) can be arranged between valve and condenser.