COMPRESSION REFRIGERATING MACHINE Russian patent published in 1998 - IPC

FIELD: refrigerating engineering. SUBSTANCE: glandless compressor of refrigerating machine is provided with gas-tight shield separating stator and rotor of electric motor from steam chamber of compressor. Shield has hole. Compressor is additionally provided with hollow bush passing through compressor housing; one end of this bush has end seal and adjoins hole in gastight shield; other end located outside housing is connected to cooling agent circulating loop between evaporator and compressor. Line connecting hollow bush with cooling agent circulating loop is fitted with electric contact pressure sensor, check valve and two-way electrically-operated valve which is electrically connected with pressure sensor. EFFECT: reduction of electric and mechanical losses in electric motor. 2 dwg