COOLING MACHINE Russian patent published in 2004 - IPC

FIELD: refrigeration equipment, particularly carbon dioxide refrigerating plants.

SUBSTANCE: cooling machine has compressor with electric motor arranged in sealed case, heat exchanger, cooler (condenser), throttle valve and evaporator. Above components are included in closed loop of coolant, namely carbon dioxide, circulation. Electric motor stator windings are placed in sealed shell. Sealed case has lower part formed as vessel and supplementary heat exchanged located inside vessel. Supplementary heat exchanger is included in feeding pipeline between compressor and heat exchanger and immersed into liquid poured in lower vessel-shaped case part. Liquid has positive coefficient of thermal volume expansion. Toluene may be used as liquid. Upper case part is provided with connection pipe linked with safety and check valves arranged in parallel one to another and connected to pressure compressor pipeline.

EFFECT: reduced metal consumption of compressor.

2 cl, 2 dwg