Patent · US Active

Vacuum pump with separate oil outlet with relief valve

US11053940B2 · kind B2 · utility

1Cited by

3References

10Claims

0Family size

Assignee

Joma-Polytec GmbH · DE

Inventors

Hans-Peter Ott · Hirrlingen, DE
Mathias Schlotterer · Bodelshausen, DE
Torsten Helle · Bingen, DE

Key dates

Filing date	Nov 21, 2018
Grant date	Jul 6, 2021
Priority date	—
Expiry date	Jul 26, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2270/701
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A vacuum pump having a housing which limits a working space and having a rotor, rotatably mounted in the housing about a rotor axis, the rotor guides a vane being movably mounted in the radial direction, the vane has a transverse extent, and the vane divides the working space into a suction side having a suction inlet and a pressure side having a pressure outlet, the housing has at least one oil outlet, the oil outlet is closed by a relief valve, the relief valve assumes an open position, when a limit pressure lying above a nominal pressure is exceeded in the working space, and the transverse extent of the vane is large enough that when the vane passes the oil outlet, the oil outlet is closed by the vane, so that there is no fluid connection between the suction side and the pressure side over the oil outlet.

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