Rotary type gas compressor

Details Rotary type gas compressor Rotary type gas compressor

1984-07-13

1987-11-24

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417300, 418 15, F04B 4900, F04C 18344, F04C 2908

Patent

active

047085983

ABSTRACT:
A rotary vane-type gas compressor for use in car coolers and the like has a plurality of intake ports for each compression working chamber located at positions shifted from one another in the revolving direction of a rotor. At least one intake port which is located at the most forward position in the revolving direction of the rotor has a throttle valve which is controlled in response to the flow rate of suctioned gas, and the opening degree of the throttle valve is changed as the revolution speed of the rotor increases and creates a higher flow rate of suctioned gas. This reduces the effective compression working chamber volume, i.e., the volume which results when one vane has passed the position of the corresponding intake port to enclose gas in the compression working chamber. By such a construction, it is possible to restrain a substantial increase in both the amount of compressed gas to be discharged and the air-cooling capacity, even when the revolution speed of the rotor increases above 2000 rpm.

REFERENCES:
patent: 1616992 (1927-02-01), Ruckstuhl
patent: 2741424 (1956-04-01), Ploeger
patent: 3671148 (1972-06-01), Reeve
patent: 4480962 (1984-11-01), Niemiec

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