发明名称 |
Injection device for a turbine engine combustion chamber |
摘要 |
A fuel injection device for an annular combustion chamber of a turbine engine, the device including a pilot circuit feeding an injector, a multipoint circuit feeding injection orifices formed in a front face of an annular chamber, and an annular ring mounted in the annular chamber and including fuel-passing orifices opening out into the injection orifices, each fuel-passing orifice formed in the annular ring including a zone of small section that is extended at least downstream or upstream by an orifice portion of increasing section. |
申请公布号 |
US9605594(B2) |
申请公布日期 |
2017.03.28 |
申请号 |
US201213980506 |
申请日期 |
2012.01.25 |
申请人 |
SNECMA |
发明人 |
Cortes Thierry;Cameriano Laurent Bernard |
分类号 |
F02C7/22;F23D11/24;F23D11/38;F23R3/28;F23R3/34 |
主分类号 |
F02C7/22 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A fuel injection device for an annular combustion chamber of a turbine engine, the device comprising:
a pilot circuit continuously feeding an injector opening out into a first Venturi; a multipoint circuit intermittently feeding injection orifices formed in a front face of an upstream annular chamber of a second Venturi that is coaxial about the first Venturi; and an annular ring mounted in the annular chamber and including fuel-passing orifices opening out into the injection orifices, wherein each of the fuel-passing orifices formed in the annular ring includes a zone of small cross-section extended at least downstream or upstream by a portion of increasing cross-section, and wherein the pilot circuit includes a circuit for cooling the annular ring, and further comprising a gap interposed between a front face of the annular ring and a front face of the annular chamber for thermally protecting the front face of the annular ring. |
地址 |
Paris FR |