Dual fuel vent free gas heater
US8061347B2 · kind B2 · utility
5Cited by
115References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2237/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A dual fuel vent free gas heater having at least one gas burner with a plurality of gas outlet ports in an upper surface thereof. The gas outlet ports are in flow communication with at least one pilot flame burner. An adjustable fuel injector or at least two fuel injectors feed fuel to the burner providing for introduction of more than one fuel to the burner. Optionally, an oxygen detection system, manual fuel selection control valve, and/or temperature shut off control system may be incorporated into the dual fuel vent free heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.