Refrigerant circuit for a refrigeration installation

摘要

In a refrigerant circuit with a compressor (10), liquefier (14), throttle member (30) and evaporator (48), a pressure-increasing device (34) can be automatically connected, upstream of the throttle member (30), into the refrigerant circuit in the case of low liquefaction pressure. As a result, it is possible to carry out the liquefaction utilising very low refrigerant temperatures with low liquefaction pressure and thus with increased economy without circulation disturbances arising in the refrigerant circuit. <IMAGE>