Hot gas seal

Abstract

A hot gas seal for sealing an opening in a heat shield element or between heat shield elements of a heat shield includes a resilient portion for providing a force which is designed such that the hot gas seal can be held in the opening by the force and/or that the sealing efficiency of the hot gas seal is increased by the force. Further, a hot gas seal assembly for sealing an opening in a heat shield element or between heat shield elements of a heat shield against a hot gas is provided, the assembly including a sealing body and a further sealing element which is in a solid state at room temperature and in a high viscosity liquid state at a temperature of the hot gas.

What is claimed is: 
     
         1 . A hot gas seal for sealing an opening in a heat shield element or between heat shield elements of a heat shield, which comprises at least one resilient portion for providing a force which is designed such that the hot gas seal is held in said opening by said force and/or that the sealing efficiency of the hot gas seal is increased by said force. 
     
     
         2 . The hot gas seal as claimed in  claim 1 , further comprising at least two leg portions which are linked by a resilient bracket portion which forms said at least one resilient portion for providing said force. 
     
     
         3 . The hot gas seal as claimed in  claim 2 , in which the resilient bracket portion is pre-tensioned such that the leg portions tend to open for providing said force. 
     
     
         4 . The hot gas seal as claimed in  claim 2 , in which the resilient bracket portion is pre-tensioned such that the leg portions tend to close for providing said force. 
     
     
         5 . The hot gas seal as claimed in  claim 1 , further comprising a metallic sealing plate which comprises at least one corrugated portion which forms said at least one resilient portion for providing said force. 
     
     
         6 . The hot gas seal as claimed in  claim 1 , further comprising at least one spring like portion which forms said at least one resilient portion for providing said force. 
     
     
         7 . The hot gas seal as claimed in  claim 1 , further comprising a flexible rolled sheet which forms said at least one resilient portion for providing said force. 
     
     
         8 . The hot gas seal as claimed in  claim 7 , in which said flexible rolled sheet has a sandwich structure comprising a soft surface on a flexible material. 
     
     
         9 . The hot gas seal as claimed in  claim 7 , in which the cross section of said flexible rolled sheet resembles the shape of an elliptical spiral. 
     
     
         10 . The hot gas seal as claimed in  claim 1 , further comprising a body and resilient extensions extending from the body, the extensions forming said at least one resilient portion for providing said force. 
     
     
         11 . The hot gas seal as claimed in  claim 10 , in which the body has a planar shape and in which the extensions protrude from at least one side of the planar shaped body. 
     
     
         12 . The hot gas seal as claimed in  claim 10 , in which the body has a circular or elliptical cross section and in which the extensions protrude radially from the body. 
     
     
         13 . The hot gas seal as claimed in  claim 10 , in which the extensions have a bristle like shape. 
     
     
         14 . The hot gas seal as claimed in  claim 10 , in which the extensions have a wedge like shape. 
     
     
         15 . The hot gas seal as claimed in  claim 10 , in which the extensions have a coil like shape. 
     
     
         16 . The hot gas seal as claimed in  claim 10 , in which the extensions have a serpentine like shape. 
     
     
         17 . The hot gas seal as claimed in  claim 12 , in which the body and/or the extensions are surrounded by a cloth seal. 
     
     
         18 . The hot gas seal as claimed in  claim 1 , in which the at least one resilient portion is pre-tensioned. 
     
     
         19 . Hot gas seal assembly for sealing an opening in a heat shield element or between heat shield elements of a heat shield against a hot gas, comprising a sealing body and at least one further sealing element which is in a solid state at room temperature and in a high viscosity liquid state at the temperature of the hot gas.