Patent · US Active

Vacuum pump system

US8613600B2 · kind B2 · utility

1Cited by

9References

5Claims

0Family size

Assignee

PFEIFFER VACUUM · FR

Inventors

Wolfgang Losch · Bad Endbach, DE
Andre Mueller · Hilzingen, DE

Key dates

Filing date	Sep 15, 2006
Grant date	Dec 24, 2013
Priority date	—
Expiry date	Mar 13, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B30/70
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A vacuum pump system includes a vacuum pump with a brushless, multi-phase, synchronous motor with a permanently magnetically excited rotor, and a pump type recognition element, a control unit for controlling the vacuum pump and having a drive microcontroller and a final stage, and a further microcontroller that monitors a rotational speed of the motor and turning off the final stage in case the rotational speed of the motor exceeds a maximum allowable rotational speed of the motor, and that forms part of the control unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.