Patent ID: 6561794
Filing Date: 2003-05-13
Classification: D21F,F23D,F26B

Abstract:
A heating unit comprising:a housing; a heat resistant, porous ceramic matrix received in the housing having an inner surface, side walls and an external surface, the inner surface of the ceramic matrix and the housing cooperating to define a chamber; at least one resilient anchoring strip extending between the ceramic matrix and the housing about the side walls of the ceramic matrix to retain the ceramic matrix in place within the housing and form a seal about the side walls of the ceramic matrix, wherein the at least one resilient anchoring strip comprises a tube of resilient material; and an inlet to the housing to admit a gas/air combustion mixture to the chamber whereby the gas/air mixture passes through the ceramic matrix to burn adjacent the external surface of the ceramic matrix to heat the external surface with the resilient anchoring strip being adapted to expand or contract to accommodate relative movement of the ceramic matrix with respect to the housing due to heating.