Ignitor canister for a turbine glow plug
View Patent ↗An ignitor canister for accommodating a glow plug in a turbine includes an elongated housing having a cavity configured to receive a tip and shaft of the glow plug therein. A base of the housing has an open end to receive the tip and shaft of the glow plug therethrough and engage a base of the glow plug. The housing has a window formed at a first end that exposes a tip of the glow plug. A fuel passageway of the housing injects fuel to the tip of the glow plug. The ignitor canister may include air flow pathways to keep the glow plug cool during operation.
1 . An ignitor canister for a turbine glow plug, the ignitor canister comprising:
an elongated housing having a cavity configured to receive a tip and shaft of the glow plug therein;
the housing having a window formed at a first end thereof that exposes a tip of the glow plug;
a base of the housing at a second end thereof having an open end configured to receive the tip and shaft of the glow plug therethrough and engage a base of the glow plug;
a fuel passageway associated with the housing which injects fuel to the tip of the glow plug, and
and an air vent formed in an outer wall of the housing, where the air vent comprises at least one air inlet formed in an area of the housing disposed within a lower temperature, high pressure portion of a c combustion chamber of a turbine and at least one air outlet in fluid communication with the at least one air inlet and formed in an area of the housing disposed within a higher temperature portion of the combustion chamber of the turbine.
2 . The ignitor canister of claim 1 , wherein the cavity is sized and configured to provide an air flow path between at least a portion of the shaft and tip of the glow plug.
3 . The ignitor canister of claim 2 , wherein an inner surface of the cavity is spaced apart from substantially an entire outer surface of the tip and the shaft of the glow plug to air cool the glow plug.
4 . The ignitor canister of claim 1 , wherein the fuel passageway is formed in the housing and includes a fuel inlet port attachable to a fuel line.
5 . The ignitor canister of claim 1 , wherein an inner surface of the base of the housing is threaded to attach to a threaded base of the glow plug.
6 . The ignitor canister of claim 1 , wherein the window is formed in a sidewall of the housing near the first end thereof.
7 . The ignitor canister of claim 6 , including a cowl associated with the window.
8 . The ignitor canister of claim 7 , wherein the cowl curves from the first end of the housing so as to extend over the tip of the glow plug and define a portion the window.
9 . The ignitor canister of claim 1 , wherein the air vent comprises a plurality of spaced apart air inlet apertures.
10 . The ignitor canister of claim 1 , including a position indicator formed on the housing to indicate an orientation of the housing window within the turbine when the ignitor canister is installed.
11 . The ignitor canister of claim 10 , wherein the position indicator comprises a notch or marking formed on the base of the housing.
12 . An ignitor canister for a turbine glow plug, the ignitor canister comprising:
an elongated housing having a cavity configured to receive a tip and shaft of the glow plug therein, wherein the cavity is sized and configured to provide an air flow path between at least a portion of the shaft and tip of the glow plug to air cool the glow plug;
a curved cowl formed at a first end of the housing and partially defining a window formed in the housing that exposes a tip of the glow plug;
a base of the housing at a second end thereof having an open end configured to receive the tip and shaft of the glow plug therethrough and engage a base of the glow plug;
a fuel passageway formed in the housing which injects fuel to the tip of glow plug; and
an air vent formed in an outer wall of the housing, wherein the air vent comprises at least one air inlet formed in an area of the housing disposed within a lower temperature, high portion of a combustion chamber of a turbine and at least one air outlet in fluid communication with the at least one air inlet and formed in an area of the housing disposed within a higher temperature portion of the combustion chamber of the turbine.
13 . The ignitor canister of claim 12 , wherein an inner surface of the cavity is spaced apart from substantially an entire outer surface of the tip and the shaft of the glow plug to form the air flow path.
14 . The ignitor canister of claim 12 , wherein the fuel passageway includes a fuel inlet port attachable to a fuel line.
15 . The ignitor canister of claim 14 , wherein the air vent comprises a plurality of spaced apart air inlet apertures.
16 . The ignitor canister of claim 12 , wherein an inner surface of the base of the housing is threaded to attach to a threaded base of the glow plug.
17 . The ignitor canister of claim 12 , including a position indicator comprising a marking or notch formed on the base of the housing for indicating an orientation of the housing window within the turbine when the ignitor canister is installed.