Vacuum pumping device with electronic control of the motor

Details Vacuum pumping device with electronic control of the motor Vacuum pumping device with electronic control of the motor

2004-05-14

2009-11-24

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

C417S032000, C417S044100, C417S044110, C417S220000

Reexamination Certificate

active

07621721

ABSTRACT:
An oil mechanical vacuum pump, which is equipped with an electric motor comprises an electronic control device for supplying the electric motor with power. The electronic control device comprises a frequency converter for controlling the excitation frequency Feccof the voltage signal SUby which the motor is powered as a function of at least one operating parameter of the pump and of at least one threshold value that can be modified depending on the operating conditions of the pump.

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