Refrigerant Compressor and Refrigeration Cycle Device

摘要

A refrigerant compressor (100) includes: a sealed vessel (103); a compression mechanism (101) that sucks refrigerant, sucked in the sealed vessel (103), for compression; a motor (102) that drives the compression mechanism (101); a suction pipe (104) for sucking the refrigerant into the sealed vessel (103) when sucking the refrigerant; a cover (117a) arranged to face an outlet of the suction pipe (104), to force the refrigerant sucked through the suction pipe (104) to collide against the cover for gas-liquid separation, and to allow liquid refrigerant from the separation to drop on a coil (126) of the motor (102); and a suction passage (118) that introduces gas refrigerant from the gas-liquid separation, for which the refrigerant sucked through the suction pipe is forced to collide against the cover (117a), to an inlet of the compression chamber provided in the compression mechanism (101). Thus, a decrease in density of the refrigerant to be compressed, sucked into the sealed vessel (103), can be prevented to prevent a decrease in refrigeration capacity, and the temperature of the motor (102) can be lowered to improve a motor efficiency.

主权项

1. A refrigerant compressor comprising:
a sealed vessel; a compression mechanism that is housed in the sealed vessel and, after refrigerant is sucked into the sealed vessel, sucks the refrigerant in the sealed vessel for compression; a motor that is housed in the sealed vessel and drives the compression mechanism; a suction pipe for sucking the refrigerant into the sealed vessel; a cover that is arranged to face an outlet of the suction pipe, to force the refrigerant sucked through the suction pipe to collide against the cover for gas-liquid separation, and to allow liquid refrigerant to drop on a coil of the motor; and a suction passage that, after the refrigerant sucked through the suction pipe is forced to collide against the cover for the gas-liquid separation, introduces gas refrigerant to an inlet of the compression chamber provided in the compression mechanism.