Temperature controlled regulator
US3980229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1975 |
| Grant date | Sep 14, 1976 |
| Priority date | — |
| Expiry date | Apr 1, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/138
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature controlled regulator in which valved air inlets communicated with air pressure sources at different temperatures control the flow of air into a mixing chamber to maintain the outlet temperature of the mixture within specified limits, said regulator being characterized in that the valve actuator has first and second chambers on opposite sides thereof respectively exposed to the pressure of the mixture and to a reduced air pressure between the downstream side of a variable area orifice controlled by a temperature sensor in the regulator outlet and the upstream side of a variable area pressure control or bleed orifice, the first-mentioned variable area orifice being decreased or increased in size by decrease or increase of the mixture temperature with reference to said specified value thus to vary the pressure in said second chamber in relation to the pressure acting in said first chamber to inversely vary the air flow through said inlets thus to maintain a specified temperature of the mixture. The regulator herein is further characterized in that the temperature sensor comprises elongated members which have different coefficients of linear thermal expansion arranged so …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.