Fuel injector with purge passage
US6073436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/11101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine fuel injector has a fuel mixing barrel, including an air swirler incorporating a fuel flow outlet, suspended in the combustor air stream by a cantilevered injector body. The cantilevered body is mounted in the combustor wall and includes a fuel flow control valve in a valve chamber located in a part of the body in a relatively cool air surrounding the combustor. The fuel outlet is located towards the downstream end of the swirler barrel. A purge passage is provided from a location towards the upstream end of the barrel extending into the outlet side of the valve chamber. When fuel flow is shut-off a pressure differential between the upstream and downstream ends of the swirler barrel causes an air flow up the purge passage into the valve chamber and down the main fuel passage to purge residual fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.