Patent ID: 7044124
Filing Date: 2006-05-16
Classification: F23C,F23D,F23M

Abstract:
1. Fuel-fired heating apparatus comprising: a combustion chamber having a relatively rigid interior side portion; a fuel burner extending through said combustion chamber in a spaced apart, noncontacting relationship with said interior side portion thereof, said fuel burner having a burner side portion facing said interior side portion of said combustion chamber; and an insulation structure sandwiched between and contacting said burner side portion and said interior side portion of said combustion chamber and preventing contact between said burner side portion and said interior side portion of said combustion chamber in a direction transverse to said interior side portion of said combustion chamber, said insulation structure being resiliently compressible between said burner side portion and said interior side portion of said combustion chamber in response to thermal expansion of said fuel burner, during firing thereof, in said direction transverse to said interior side portion of said combustion chamber.