Rotor profile for a Roots vacuum pump

Details Rotor profile for a Roots vacuum pump Rotor profile for a Roots vacuum pump

1991-08-27

1992-10-06

Vrablik, John J.

Rotary expansible chamber devices

Working chamber surface expressed mathematically

418206, F04C 1812

Patent

active

051526840

ABSTRACT:
A dual rotor Roots type vacuum pump has an improved rotor profile contour resulting in high area efficiency, high volumetric efficiency, reduced backstreaming and simplified economical manufacturing which yields a compact, cost effective pump.

REFERENCES:
patent: 3089638 (1963-05-01), Rose
patent: 4938670 (1990-07-01), Lee
patent: 5040959 (1991-08-01), Fukagawa
Niemann and Winter, Maschinenelemente, vol. 2, 1985, p. 42.

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