Patent · US Expired

Valve for controlling fluids

US6333586A · kind A · utility

16Cited by

2References

21Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wilhelm Polach · Asperg, DE
Friedrich Boecking · Stuttgart, DE

Key dates

Filing date	Feb 14, 2000
Grant date	Dec 25, 2001
Priority date	—
Expiry date	Feb 14, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/007
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve for controlling fluids in which the valve is actuatable by a piezoelectric actuator that acts directly on a valve member of the control valve. To compensate for changes in length of different magnitudes resulting from temperature factors, a Peltier element is incorporated into the heat flow from the piezoelectric actuator to a heat-dissipating part of the housing, and the Peltier element is triggered by an electric control unit in such a way that temperature-dictated changes in length of the piezoelectric actuator are at least partly compensated for compared with those of the housing receiving the piezoelectric actuator.

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