Patent ID: 7340880
Filing Date: 2008-03-11
Classification: F23R

Abstract:
1. A bypass valve for diverting a portion of air compressed by a compressor, during a process of guiding said compressed air to a combustion chamber, wherein said bypass valve is provided with: a frame, which is disposed to cover a plurality of compressed air introduction ports that are arrayed in ring, and in which there are formed a plurality of first openings that communicate with a combustion chamber tail pipe; a grid plate which has a ring shape identical to that formed by the plurality of combustion chamber tail pipes and in which there are formed a plurality of second openings that are positioned opposite said first openings, said grid plate being supported in a manner to enable rotation in its circumferential direction; an inner rail and an outer rail that are provided to the inside surface and the outside surface of the grid plate and are formed in a unitary manner with said frame; and a plurality of guide rollers that are provided to said grid plate, and that come into contact with either said inner rail or said outer rail depending on circumstances and assist in rotation of said grid plate, wherein in a state where the compressed air does not flow around the bypass valve, a space interval is provided between both said inner rail and said plurality of guide rollers, and between said outer rail and said plurality of guide rollers.