Patent ID: 6073538
Filing Date: 2000-06-13
Classification: F01B,F02F,F04B

Abstract:
A reciprocating compressor (1) including at least one cylinder (4) having a cavity (5), at least one piston (7) axially moveable within the said cavity (5), and at least one head (6) fixed to the cylinder (4) to close an end of the said cavity (5) and define, together with the cylinder (4) and the piston (7), a variable-volume chamber (8); the piston (7) being provided with sealing means (12) to make said variable-volume chamber (8) fluid-tight, and cleaning means (16) to remove lubricating fluid from a lateral surface of the said cavity (5);wherein the said cylinder (4) is formed from aluminum,wherein said sealing means (12) comprise a sealing element (12) formed from plastic material,wherein said piston (7) includes guide means (18) formed from plastics material for preventing contact between the piston (7) and the lateral surface of said cavity (5), andwherein said cleaning means (16) comprise an oil-scraper element (16) made from metal, said oil-scraper element (16) being positioned between said sealing element (12) and said guide element (18).