Rotating spiral pump with cooling between radial steps

Details Rotating spiral pump with cooling between radial steps Rotating spiral pump with cooling between radial steps

1993-07-20

1994-09-13

Vrablik, John J.

Rotary expansible chamber devices

Multistage

One working chamber stage encircles another

418 552, 418 59, 418 83, 418101, F04C 1804, F04C 2300, F04C 2904

Patent

active

053463749

ABSTRACT:
A rotating spiral pump comprises a housing in which two displacement disks are rotatably disposed. The two displacement disks are provided on one side with ribs that extend in spiral fashion and interlock for the purpose of forming pumping chambers, and seal against the opposite displacement disk with their free face ends. The spirally extending ribs are embodied in several steps. The plurality of steps are spatially separated from each other by the formation of an space, and the radially outer step has at least twice as many pumping chambers as the radially inner step. Cooling means in the form of cooling ribs are preferably provided in the space, between the outlet of the radially outer step and the inlet of the radially inner step.

REFERENCES:
patent: 3600114 (1971-08-01), Dvorak et al.
patent: 3989422 (1976-11-01), Guttinger
patent: 4715797 (1987-12-01), Guttinger

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