Turbo vacuum pump

Details Turbo vacuum pump Turbo vacuum pump

1993-08-10

1995-01-10

Gluck, Richard E.

Pumps

Motor driven

Electric or magnetic motor

41742311, 415 90, F01D 136

Patent

active

053801717

ABSTRACT:
A turbo vacuum pump has a housing provided with a suction port and a discharge port, an evacuation pump disposed in the housing for compressing a gas sucked through the suction port and discharging the compressed gas through the discharge port, and a motor for driving the evacuation pump, the motor and the evacuation pump having a common rotor. The rotor is supported at its both axial ends by bearings. A spiral grooved dynamic seal is disposed in the vicinity of the suction port and at the opposite side of the suction port to the evacuation pump. The diameter of the spiral grooved dynamic seal, at the smallest, is greater than the outside diameter of the final stage impeller of the evacuation pump.

REFERENCES:
patent: 4057369 (1977-11-01), Isenberg et al.
patent: 4270882 (1981-06-01), Luyten
patent: 4512725 (1985-04-01), Saulgeot
patent: 4695223 (1987-09-01), Caspar et al.
patent: 4717315 (1988-01-01), Miki et al.
patent: 4734018 (1988-03-01), Taniyama et al.
patent: 5059092 (1991-10-01), Kabelitz

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