Bristol Compressors, Inc.

Milton M Kosfeld

Robert D Douglas

Gerald L Terwilliger

Prasanta K Roy

A single or multi-cylinder compressor unit being cylinder wall ported and having suction inlet means to compression chamber means through the wall and top of piston means, wherein suction valve means comprises preferably a light-weight plastic disc means mounted in an essentially free-floating manner in the piston means top, the discharge valving cooperatively comprises discharge porting plate means and discharge valve disc means reciprocably mounted on bearing means in the compressor head for enhanced operating accuracy and seat longevity and adapted to seal discharge port aperture means in the plate means on the suction stroke, and wherein the piston means top, the compression side of the suction valve disc means, the compression side of the porting plate means, and the compression side of the discharge valve disc means all being adapted to lie substantially in the same plane at the apex of the compression stroke to essentially eliminate gas reexpansion.

Gas compressor head and discharge valve construction

A single or multi-cylinder compressor unit being cylinder wall ported and having suction inlet means to compression chamber means through the wall and top of piston means, wherein suction valve means comprises preferably a light-weight plastic disc means mouted in an essentially free-floating manner in the piston means top, the discharge valving cooperatively comprises discharge porting plate means and discharge valve disc means reciprocably mounted on bearing means in the compressor head for enhanced operating accuracy and seat longevity and adapted to seal discharge port aperture means in the plate means on the suction stroke, and wherein the piston means top, the compression side of the suction valve disc means, the compression side of the porting plate means, and the compression side of the discharge valve disc means all being adapted to lie substantially in the same plane at the apex of the compression stroke to essentially eliminate gas reexpansion.

A refrigerant compressor construction including one or more cylinders and pistons and a cylinder head mounted over the end of the cylinders, the head having a base, a first wall providing a suction chamber and a second wall providing a discharge chamber, each of the walls being unitary with the base and spaced from each other to provide a thermal barrier between the chambers to minimize suction gas heating.

Refrigerant gas compressor construction

A refrigeration gas compressor unit having a casing, and electric motor driven compressor mounted in the casing, a housing containing and substantially isolating the inner passages or cavities of the motor from the casing cavity, a refrigerant suction port in the casing, a stationary liquid-gas separator in the casing having a wall defining a generally circular chamber communicating substantially tangentially with the suction port, a primary outlet in a radially central portion of the separator and a secondary outlet in a peripheral portion thereof, a primary-feed conduit connecting the primary outlet to the intake of the compressor, a secondary-feed conduit connecting the secondary outlet to the intake of the compressor and includes the passages between the housing, rotor and stator of the electric motor, and a refrigerant discharge port in the casing communicating with the compression chamber of the compressor.

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Bristol, VA, United States of America

Milton M Kosfeld