Cooled igniter
US3990834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1973 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Sep 17, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A combustion chamber is provided with a fuel source and an igniter for initiating combustion. The igniter projects into the combustion chamber and into proximity with the fuel source. A heated tip portion of the igniter initiates burning and is cooled by means of cooling air passing through a plurality of air passages defined by a plurality of channels near the external surface of the igniter housing and further defined by a surrounding ferrule. Certain of the channels extend axially of the housing while at least one channel extends circumferentially thereabout and intersects the former channels. An opening in the ferrule provides communication between preselected of the channels and the interior of the combustion chamber. Cooling air passes through the channels in the axial direction (relative to the igniter) and is collected by the circumferential channel whereupon it is exhausted through the ferrule opening generally normally to the igniter housing and toward the downstream direction therefrom within the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.