Fuel-fired heating appliance with temperature-based fuel shutoff system
US6964248B2 · kind B2 · utility
5Cited by
45References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Oct 17, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2241/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.