Operating refrigeration machine used e.g. in air conditioning system - blocking refrigerant circuit behind condenser as seen by compressor with coolant leaks

摘要

With the refrigerant outlet of the refrigerant circuit (2) closed from the compressor (6) as seen from behind the condenser (3), the refrigerant (k) existing in the refrigerant circuit is delivered to the condenser (3); and after that, the refrigerant circuit, seen additionally from the region before the condenser (3) is closed. At least one gas sensor (15) controls the first valve (10) via a signal line (16). A pressure sensor (12) is provided in the refrigerant circuit between the evaporator (5) and the compressor. A control unit (17) connects the compressor (6) with the pressure sensor (12) and/or the second valve (12). The control unit is supplied by the gas sensor and/or the pressure sensor. ADVANTAGE - Upon leakage in the refrigerant circuit, amt. of refrigerant escaping is reduced to min.