Pump with undulating pump element

Details Pump with undulating pump element Pump with undulating pump element

1993-05-18

1994-10-04

Bertsch, Richard A.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

With coolant air impelling means or finned cylinder surface

418104, 418216, 418217, F01C 2104

Patent

active

053521030

ABSTRACT:
A pump comprises a pump casing having a pump channel, a pump element rotating in the pump channel, and a rotor shaft mounted in the pump casing and attached to the pump element. The pump element has a cylindrical outer periphery, and undulating surfaces in the axial direction. The opening in the casing which receives the rotor shaft has an annular groove in which there is disposed a spring loaded sealing element which bears slidably against a flat end face of the pump element when the pump element rotates. The sealing element is subjected to the pressure of superheated steam which is conducted to the sealing element via pressure channels in the pump casing connected to the annular groove. The rotor shaft includes radial and axial channels through which a coolant flows.

REFERENCES:
patent: 3561894 (1971-02-01), King
patent: 4168936 (1979-09-01), Scheller et al.
patent: 4181480 (1980-01-01), Balsinger
patent: 4469017 (1984-09-01), Hanlon
patent: 5197869 (1993-03-01), Hansen et al.

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