Device for controlling the air supply to a gas burner
US4396371A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 5, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Mar 5, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2235/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A burner having an air intake at atmospheric pressure, a gas (fuel) supply line and a combustion chamber in which gas from the latter line burns in the presence of atmospheric air drawn in from the intake, is provided with a swingable or rotatable flap-type valve member which controls the volume rate of flow of the air to the combustion site. According to the invention, the position of the valve member is controlled by a parameter generated by the air stream and in response to the pressure in the gas supply line to maintain the air factor (ratio of air to gas) substantially constant. To this end a membrane type pressure detector responds to the pressure in the gas supply line and is connected by a mechanical force transmission mechanism to the flap or other valve element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.