Rotary piston pump having a slide valve driven by a rotor

Details Rotary piston pump having a slide valve driven by a rotor Rotary piston pump having a slide valve driven by a rotor

1995-07-14

1998-07-14

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working fluid passage in inner working or reacting member

418147, 418255, 418270, F04C 18344, F04C 2700, F04C 2902

Patent

active

057794634

ABSTRACT:
A rotary piston pump in which a slide valve has a pivot bearing at each of its ends which supports a sliding block and wherein a theoretical slide valve length in the position in which the axes of symmetry of the shell rotor and slide valve are superimposed, is equal to the sum of the length along the slide valve measured between the pivot bearings plus two times the thickness of a sliding block measured between its pivot bearing and the wall of the shell. The sliding blocks have an outer surface with a curvature between the curvature of the outer surface of the rotor and the maximum curvature of the wall of the shell.

REFERENCES:
patent: 813024 (1906-02-01), Renner
patent: 902501 (1908-10-01), Machlet
patent: 1339347 (1920-05-01), Jackson
patent: 4144005 (1979-03-01), Brucken
R. Plank & J. Kuprianoff: Rotary Compressors for Refrigeration, VDT Journal vol. 79, dated Mar. 23, 1935, pp. 369-372.

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