Internal gear pump with branched intake plenum

Details Internal gear pump with branched intake plenum Internal gear pump with branched intake plenum

1985-09-17

1986-06-03

Smith, Leonard E.

Rotary expansible chamber devices

Moving cylinder

Rotating

418161, F01C 110, F01C 2110

Patent

active

045927065

ABSTRACT:
This internal gear pump has: a pump housing formed with a rotor receiving cavity which has a cylindrical circumferential inner wall surface; an outer rotor formed with a generally cylindrical outer surface which fits closely and coaxially in the cylindrical circumferential inner wall surface of the rotor receiving cavity and is rotatable around their mutual central axis within the pump housing, and which is further formed with an inner cavity the defining surface of which is formed with a plurality of internally facing teeth; and an inner rotor, somewhat smaller than the inner cavity of the outer rotor, which is formed with a plurality of externally facing teeth which mesh and cooperate with the internally facing teeth of the outer rotor. A pumping chamber is defined between the outer surface of the inner rotor and the inner surface of the outer rotor between the mutually meshing teeth thereof. An aperture is formed in the pump housing to define an intake plenum, and this aperture opens to define an intake port structure through several portions of the circumferential inner wall surface of the rotor receiving cavity, at least one remaining portion of the circumferential inner wall surface of the rotor receiving cavity intervening between separate such several portions of the circumferential wall surface of the rotor receiving cavity which are removed to allow the intake port structure to open therethrough.

REFERENCES:
patent: 2513984 (1950-07-01), Witchger
patent: 3016834 (1962-01-01), Deska

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