Two stage oil free air compressor

Details Two stage oil free air compressor Two stage oil free air compressor

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 25/00 (2006.01) F04B 39/00 (2006.01)

Patent

CA 2296254

A two stage reciprocating piston oil free air compressor having an improved service interval. In a first stage, a first wobble piston is reciprocated in a first cylinder to compress ambient air to an intermediate pressure. In a second stage a second wobble piston is reciprocated in a second cylinder to compress the intermediate pressure air to a desired high pressure. Each wobble piston is provided with a seal which seals to the adjacent cylinder walls as the piston reciprocates and rocks. The stroke of the higher pressure second stage piston is less than the stroke of the lower pressure first stage piston to increase the operating life of the second seal, preferably to substantially the same operating life as the first seal.

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