Internal gear device with balancing recesses in the insert membe

Details Internal gear device with balancing recesses in the insert membe Internal gear device with balancing recesses in the insert membe

1978-02-16

1980-01-22

Vrablik, John J.

Rotary expansible chamber devices

Pressure fluid radially balances working or rotating...

418126, 418170, F01C 110, F01C 1900, F01C 2100, F03C 300

Patent

active

041848209

ABSTRACT:
In an internal gear pump or motor the insert control member between the inner and the outer gear is provided with balancing pockets, which receive fluid under pressure to counter-balance the pressure forces exerted onto the inner and outer gear of the device. Thereby it is obtained, that the radial forces of fluid onto the inner and outer gear are balancing each other by diametrically located oppositional directed fields of force of pressure in fluid. The inner and outer rotors such float freely between radial forces of fluid. Radial rest loads are prevented and the life of the rotors is extended. There may be a single insert or a plurality of inserts and there may be one or a plurality of suction chambers in the device. Additional outer guide means or pressure fields of fluid under pressure may be provided. The loading of the balancing pockets with pressure fluid may be done through respective passages from areas under pressure to said balancing pockets.

REFERENCES:
patent: Re27228 (1971-11-01), Brundage
patent: 1604802 (1926-10-01), Brenzinger
patent: 1970146 (1934-08-01), Hill
patent: 2544144 (1951-03-01), Ellis
patent: 3592572 (1971-07-01), Schnell
patent: 3730656 (1973-05-01), Lambeth

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