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    • 20. 发明授权
    • Two stage oil free air compressor
    • 两级无油空压机
    • US06558135B1
    • 2003-05-06
    • US09776236
    • 2001-02-02
    • Mark W. Wood
    • Mark W. Wood
    • D06F7524
    • F04B25/005F04B39/0094
    • 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.
    • 两级往复式活塞无油空气压缩机具有改进的使用间隔。 在第一阶段中,第一摆动活塞在第一气缸中往复运动,以将环境空气压缩至中间压力。 在第二阶段中,第二摆动活塞在第二气缸中往复运动,以将中压空气压缩至期望的高压。 每个摆动活塞都设有一个密封件,当活塞往复运动并摇动时,该密封件将密封到相邻的气缸壁上。 较高压力的第二级活塞的行程小于低压第一级活塞的行程,以增加第二密封件的使用寿命,优选地与第一密封件基本相同的使用寿命。