Patent ID: 7089748

Claim:
A combustion chamber comprising: an outer wall structure surrounding an internal area; a cooling air inlet orifice arranged on the outer wall structure for cooling air near a hot gas outlet orifice, the cooling air inlet orifice opening into a cooling air channel; a burner projecting into the internal area; a housing extending from the burner to the hot gas outlet orifice; a stiffening rib arranged on a surface of the housing and oriented in an axial direction in the direction of hot gas flow, the stiffening rib sized and configured to reduce stress in the housing; an inner wall offset from the outer wall structure, the inner wall formed by a surface of the housing and cooled by convection by an air stream flowing between the outer wall structure and the inner wall, the air stream being conducted in a closed cooling air channel; and an outlet opening for the cooling air from the cooling air channel via which the cooling air is conducted to the burner for combustion purposes, whereby between the cooling air inlet orifice and the outlet opening the majority of the surface of the housing is cooled by convection by the cooling air stream; an interlocking joint comprising a flange of the housing proximate the hot outlet orifice extending into a slot formed in the outer wall structure, the interlocking joint providing positional support for the housing within the outer wall structure while allowing both axial and radial thermal growth there between; and a suspension device comprising a plurality of fixing elements each urging the housing radially toward the outer wall structure under a spring tension to provide a rest position for the housing within the outer wall structure, each fixing element comprising a bolt passing through a respective conical shaped guide hole compromising a narrowing diameter formed through the outer wall structure effective to create a rubbing by the respective bolt against the respective narrowing during operation of the combustion chamber thereby suppressing unwanted vibration of the housing.