SEMIHERMETIC REFRIGERANT COMPRESSOR (VARIANTS) Russian patent published in 2022 - IPC F04B35/04 

FIELD: refrigeration.

SUBSTANCE: invention relates to a semihermetic refrigerant compressor. Semi-hermetic compressor comprises a reciprocating compressor and an electric engine, a common body (10) with an engine section (24) and a compressor section (22), a refrigerant path located on the suction side and leading from the suction branch pipe (232) in the body (10) to the inlet chamber of the reciprocating compressor, and a refrigerant path located on the pressure side and leading from the outlet chamber of the reciprocating compressor to the pressure branch pipe (216) on the body (10). At least one cylinder of a reciprocating compressor is provided in section (22), with a piston configured to move in the cylinder hole made in section (22), a valve plate closing the cylinder hole and a cylinder block head (92) covering the plate and forming part of section (22). The semihermetic compressor is equipped with an externally controlled productivity control unit (142) located on at least one head (92). The electric engine is made in the form of a synchronous engine, located in the rotor whereof are permanent magnets and a short-circuited cage.

EFFECT: group of inventions is aimed at ensuring efficient power operation.

40 cl, 11 dwg