Heating
AssigneeKent Heating Limited
InventorJohn S. Fleming
Life of this patent
Estimating the term…
Abstract
A heating appliance having which a viewport through which combustion can be viewed incorporating a portion which is reflectorized to reflect some of the radiant heat of the burning fuel in the fire chamber back into the fire chamber to maintain high temperatures in the fire chamber for efficient combustion while reducing the temperature of the outer surface of the viewport and accordingly the likelihood of injury to persons accidentally touching the viewport and the possible damaging effects of thermal exposure and shock. The viewport is reflectorized in the preferred embodiment by a treatment which enhances the reflectivity of the transparent or translucent portion over that of transparent glass.
Claims24
In a solid fuel fuelled heating apparatus including a fire chamber having a surrounding wall portion in whcih solid fuel can be burned, and a transparent or translucent window portion forming at least a part of said fire chamber wall portion, the improvement comprising:
- means for at least partially reflectorizing said window portion at a position substantially outwardly, with respect to the chamber, of an inner surface of said window portion to enhance reflective properties of said window portion for reflecting a sufficient portion of all radiant heat originating in the fire chamber in use to maintain said inner surface at a temperature sufficiently high to reduce deposits of combustion products on said window portion and resultant obscuration of said window portion in normal operation.
Dependencies are inferred from the claim text.