Oil-free scroll compressor

Details Oil-free scroll compressor Oil-free scroll compressor

1994-02-16

1994-10-25

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417362, 4174105, 418 551, 418 60, 418 83, F04B 3504, F04B 4106, F04B 4902, F04C 1804

Patent

active

053583876

ABSTRACT:
An oil-free scroll compressor comprising a plurality of oil-free scroll compressing mechanism blocks, each for compressing a gas, and a motor or motors for driving the plurality of oil-free scroll compressing mechanism blocks. In operation, an air is suctioned into the compressor through a filter and a throttle valve and then divided and sucked into first and second oil-free scroll compressing mechanism blocks, which act to increase the pressure of the air to a predetermined pressure. The compressed air is cooled by an after-cooler and supplied to the compressed air user side. The scroll compressing mechanism blocks are driven by a dual-shaft motor through belts. Under no-load condition, the throttle valve is closed and a release valve is opened, whereby the compressed air held between the blocks and check valves is released.

REFERENCES:
patent: 3367562 (1968-02-01), Persson et al.
patent: 3994633 (1976-11-01), Shaffer
patent: 4192152 (1980-03-01), Armstrong et al.
patent: 4515539 (1985-05-01), Morishita
patent: 4529363 (1985-07-01), Suzuki
patent: 4611975 (1986-09-01), Blain
patent: 4741674 (1988-05-01), Tischer

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