Thermal switch for energy sustaining water heater
US8082888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | May 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A water heater is provided that includes a tank for storing water and a combustion chamber in thermal communication with the tank for heating the water. The combustion chamber contains a pilot burner and at least one main burner. The water heater also includes a flue containing a flue damper to control the passage of exhaust gases from said combustion chamber. The water heater further includes an electrical control circuit connected to said flue damper. The electrical control circuit includes a thermal switch positioned proximal to the main burner The thermal switch is configured to prevent the flue damper from closing while the main burner is firing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.