Rotary displacement compressor with capacity control

Details Rotary displacement compressor with capacity control Rotary displacement compressor with capacity control

1975-12-31

1977-06-07

Vrablik, John J.

Pumps

Expansible chamber type

Having separate noncyclic valve

418159, 418195, F04B 4902, F01C 2112, F01C 108, F04C 2908

Patent

active

040280160

ABSTRACT:
A rotary displacement compressor having a driven cylindrical rotor inside a casing provided with spirally-extending grooves, and at least one gear in sealing engagement with the teeth of the rotor in which the axis of rotation of the gear intersects the axis of rotation of the rotor and in which the gas to be compressed is drawn-in through the open ends of the grooves at one end of the rotor and an exhaust port is located in the wall of the casing near the other end including a second port in the wall casing at the same axial height as each exhaust port, the port being in communication with the intake side of the compressor via a return pipe, and a regulating ring to control the size of the return port and the exhaust port.

REFERENCES:
patent: 2938663 (1960-05-01), Liick
patent: 3029738 (1962-04-01), Clar
patent: 3088659 (1963-05-01), Nilsson et al.
patent: 3133695 (1964-05-01), Zimmern
patent: 3334546 (1967-08-01), Vuolle-Apiala
patent: 3797975 (1974-03-01), Keller
patent: 3804564 (1974-04-01), Zimmern
patent: 3841806 (1974-10-01), Zimmern

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