Combination of a piezoelectric igniter and a safety valve for a gas range
US5375585A · kind A · utility
Inventor
Key dates
| Filing date | Feb 8, 1994 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Feb 8, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q3/002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A gas range includes a burner, a burner control unit, a piezoelectric igniter and a safety valve. The safety valve is situated between a gas supply and the burner. A thermocouple is situated near the burner. The piezoelectric igniter is used to ignite gas which vents out of the burner. As a flame occurs at the burner, a temperature at the burner will ascend. The thermocouple detects the increased temperature and generates a current to open the safety valve. If the flame goes out, the temperature will descend to the predetermined value. The thermocouple detects the decreased temperature and stops generating any current to actuate the safety valve. Thus, the safety valve is closed so as to keep any gas from venting out of the burner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.