Patent ID: 6766648
Filing Date: 2004-07-27
Classification: F23M,F23N

Abstract:
An anti-condensation device for a sensing apparatus in a turbine comprising:a wall in part defining a combustion chamber; a flame sensor body disposed outside said combustion chamber wall for determining the presence of a combustion flame; said flame sensing body having a line of sight through an aperture in the wall of the combustion chamber; said device including first and second tubular structures with said second tubular structure at least partially surrounding said first tubular structure and defining a space therebetween for flowing air; said first tubular structure being connected to said combustion chamber wall about said aperture and in communication with said aperture in the combustion chamber wall, said first tubular structure extending from about said aperture toward said sensor body and terminating short thereof, said second tubular structure being connected to the flame sensor body and surrounding said first tubular structure along a majority of its length terminating short of and adjacent to said aperture; said second tubular structure enabling air to flow into said space between said first and second tubular structures at a location adjacent said aperture and in a direction toward said sensor body and reverse flow from said space into said first tubular structure for flow through the aperture and combustion wall into the combustion chamber.