Combustion apparatus
US4606719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1984 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Dec 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/34
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The disclosure is directed to a safety arrangement adapted to detect the incomplete combustion of a burner to stop the combustion in a combustion apparatus for burning a mixture of fuel and air. Through employment of an oxygen concentration cell type sensor (25), by setting the burner to be at a low air/fuel ratio (rich air/fuel mixture), ignition performance has been improved, while simultaneously, through utilization of the fact that the sensor electromotive force is large during a low air/fuel ratio, it is made possible to detect the ignition of the burner quickly and positively. In addition, it is so arranged that voltage is applied to the sensor (25) from outside, so that, by utilizing temperature characteristics of the internal resistance of the sensor (25), misfire of the burner is positively detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.