Turbomolecular vacuum pump with a rotor and at least one antifri

Details Turbomolecular vacuum pump with a rotor and at least one antifri Turbomolecular vacuum pump with a rotor and at least one antifri

1986-03-26

1987-09-22

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

415109, 415111, 415180, 384476, 384489, 384900, F04D 2904

Patent

active

046952233

ABSTRACT:
The invention relates to a turbomolecular vacuum pump (1) with a rotor (6) and at least one antifriction bearing (17) for the rotor, the stationary ring (19) of the antifriction bearing being seated on the wall of a sleeve (21) which in turn is supported through at least two O-rings (26, 27) made from an elastic material on a casing section (13) of the pump. To improve the heat flow from the sleeve (21) to the casing (13) of the pump, the annular space (29) formed by two seal rings (26, 27), the sleeve (21) and the pump casing (13) is filled with a medium (31) promoting heat flow from the sleeve to the adjacent part of the casing.

REFERENCES:
patent: 1864027 (1932-06-01), Pederson
patent: 2830755 (1958-04-01), Anderson
patent: 2841455 (1958-07-01), Perrier
patent: 2854296 (1958-09-01), Eberle
patent: 3975113 (1976-08-01), Ogles
patent: 4579508 (1986-04-01), Tsumaki et al.

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