Temperature control system
US5072781A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jul 30, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1854
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved temperature control system is disclosed that provides an aircraft working or supply fluid within a desired temperature range for anti-icing, air conditioning and other aircraft subsystems. The supply fluid is bled from compressor stages of a gas turbine engine and passes through a precooler in a heat exchange relationship with a cooling fluid, bled from a fan stage of the engine. A single temperature sensor includes a pair of control poppet or variable orifice ball valves that are adjustably actuated in response to temperature changes of the supply fluid downstream of the precooler. The control poppet valves pneumatically regulate flow of the supply fluid and cooling fluid upstream of the precooler, to keep the supply fluid within the desired temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.