Patent · US Active

Expansion machine having a shaft sealing ring and a valve

US10364692B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Nadja Eisenmenger · Stuttgart, DE
Steffen Buhl · Mindelheim, DE

Key dates

Filing date	Oct 22, 2015
Grant date	Jul 30, 2019
Priority date	—
Expiry date	Oct 24, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01D11/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to an expansion machine (20), comprising an output shaft (24) and a shaft sealing ring (25) that interacts with the output shaft. The expansion machine (20) has an inflow region (21) and an outflow region (22). During operation, a working medium flows through the expansion machine (20), wherein compressed working medium flows into the inflow region (21) and expanded working medium flows out of the outflow region (22). The shaft sealing ring (25) separates a valve space (11) filled with working medium from a surrounding space (40). A valve (10) is arranged in the expansion machine (20). The pressure in the valve space (11) can be controlled by means of the valve (10).

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