Compressor and lubricating pump assembly

Details Compressor and lubricating pump assembly Compressor and lubricating pump assembly

1982-05-27

1984-03-13

Smith, Leonard E.

Pumps

Motor driven

Interrelated or common lubricating or cooling means for pump...

184 618, 415 90, F04B 3902

Patent

active

044364903

ABSTRACT:
A compressor and its external-rotor drive motor are arranged on a common stationary shaft in a unitary housing. On the end of the stationary shaft which is away from the compressor, a friction pump is mounted for pumping lubricant from a supply in the unit housing into an axial canal drilled in the stationary shaft. The impeller of the friction pump consists of a hollow cylinder which is coupled to the external rotor. The hollow cylinder is received in a pump housing which has an annular space between an inner and an outer housing part into which the hollow cylinder extends, forming an inner and an outer gap. The two gaps are in communication with each other and each contains at least one constriction which forces oil carried by rotation of the hollow cylinder past openings in the inner housing into the axial canal.

REFERENCES:
patent: 2294742 (1942-09-01), Fraser
patent: 2440593 (1948-04-01), Miller
patent: 3037457 (1962-06-01), Sternlicht
patent: 4239448 (1980-12-01), Graf

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