Thermomechanical vacuum regulator using bimetallic position sensing
US4005821A · kind A · utility
5Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Apr 10, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87225
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A thermomechanical vacuum regulator adapted for use in automatic temperature control systems includes a bimetal strip which flexes in accordance with the temperature of air stream whose temperature is to be controlled. The bimetal strip positions a whiffle tree beam which carries a vacuum valve for communicating a source of vacuum with a chamber within which vacuum is regulated, and a vent valve for communicating the chamber with a source of ambient air. The vent valve seat is located on a floating diaphragm which forms one wall of the chamber. In alternative embodiments, one of the valves is replaced by an orifice and column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.