Patent · US Expired

Blower for propelling a continuous gas stream with inflatable gas seals

US4729724A · kind A · utility

5Cited by

9References

6Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Hans-Heinrich Henning · Cologne, DE
Hartmut Lelickens · Wiesenthau, DE
Herbert Schramm · Leonberg, DE

Key dates

Filing date	Sep 29, 1986
Grant date	Mar 8, 1988
Priority date	—
Expiry date	Sep 29, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH02K5/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An apparatus for propelling a continuous gas mixture stream of an inert carrier gas and an aggressive doping gas, includes an electric motor having a motor housing filled with pure carrier gas and a shaft with a shaft extension, a radial blower having an impeller mounted directly on the shaft extension and a blower housing filled with the gas mixture and coupled to the motor housing, a gas ring of pure carrier gas being continuously fed and maintained in a ring space for sealing the blower housing against the motor housing in an operating state, and a hollow sealing ring being inflated with compressed gas for sealing the blower housing from the motor housing when the blower is stopped.

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