Method of and apparatus for effecting volume control of compress

Details Method of and apparatus for effecting volume control of compress Method of and apparatus for effecting volume control of compress

1985-09-11

1988-02-09

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Driven pump part speed responsive

417295, 417442, 417462, 417503, F04B 2102, F04B 2900, F04B 4900

Patent

active

047238950

ABSTRACT:
A method of and an apparatus for effecting volume control suitable for use with a compressor for compressing a compressible fluid, such as a refrigerant of the refrigeration cycle, wherein a suction fluid is forcedly closed while a suction step is being performed and the fluid drawn up to then by suction into each working chamber is subjected to adiabatic expansion during the rest of the suction stroke. The fluid in the working chamber subjected to adiabatic expansion is then subjected to adiabatic compression in initial stages of a compression stroke following the suction stroke only for a period corresponding to the period of the adiabatic expansion. An on-off control valve is mounted in a fluid suction passage and operative to be brought, when it is necessary to effect volume control, to a closed position while the suction stroke is being performed, to thereby interrupt the flow of the fluid through the fluid suction passage to the working chamber.

REFERENCES:
patent: 1910876 (1933-05-01), Appel
patent: 1988296 (1935-01-01), Blume et al.
patent: 2191345 (1940-02-01), Gaede
patent: 3048022 (1962-08-01), Clary
patent: 4452570 (1984-06-01), Fujisaki et al.
patent: 4515066 (1985-05-01), Ito et al.

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