Dual fuel heater
US7607426B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 30, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jan 25, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2237/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In certain embodiments, a dual fuel heater has a pressure regulating device for selectively coupling with a first source or a second source operating at different pressures. The dual fuel heater can also include first and second fuel lines, a fluid flow controller, a combustion chamber and first and second oxygen depletion sensor nozzles. The fluid flow controller is configured to selectively permit flow of fuel to either the first fuel line or to the second fuel line. In some embodiments, the first fuel line is connected to the first oxygen depletion sensor nozzle and the second fuel line is connected to the second oxygen depletion nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.