Vacuum pumping device

Details Vacuum pumping device Vacuum pumping device

1997-10-07

1999-10-26

Thorpe, Timothy S.

Pumps

Motor driven

Electric or magnetic motor

4174231, 4174234, 4174237, F04B 3504

Patent

active

059717254

ABSTRACT:
The invention concerns a vacuum pumping device comprising: a vacuum pump (100) having a casing (101), provided with a suction port (119) and an exhaust port (120), in which there is defined a first portion (102), housing the gas pumping stages formed by rotor disks (113, 114) secured to a pump rotatable shaft (123), and stator rings (115, 116) secured to the vacuum pump casing and cooperating with said rotor disks (113, 114); and a second portion (103) housing the electric motor (121) of the vacuum pump and at least one bearing (122) for supporting the shaft (123); an electronic control unit (1) comprising a housing (2) defining an inner space (17) containing the electronic components of an electronic circuit feeding the electric motor (121), and wherein at least the second portion (103) of the pump casing (101) is located within the inner space (17) containing the electronic components.

REFERENCES:
patent: 4722669 (1988-02-01), Kundert
patent: 5238362 (1993-08-01), Casaro et al.
patent: 5368446 (1994-11-01), Rode
patent: 5380171 (1995-01-01), Nagaoka et al.
patent: 5443368 (1995-08-01), Weeks et al.

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