| abstract |
A gas or other fluid fired furnace for mounting in a wall, especially of a recreational vehicle providing living accommodations, such as so-called ''''campers,'''' house trailers, and the like, where space is at a premium and special problems of vibration, proper venting, and reliability in operation are presented. An elongate, specially fabricated, Venturi-tube burner is mounted, along with a fuel feed control unit, on a removable closure plate positioned across the lower end of a front pan-like member of a shallow, rectangular, upstanding firebox. The firebox provides a combustion chamber and heat exchanger for the furnace in a compact heater unit housing and has an outwardly extending peripheral fin through which a fuel supply extends at the bottom of the firebox and is preferably canted forwardly along the top of the firebox to direct air flow and increase efficiency. A special vent unit, provided for mounting exteriorly of the spaced to be heated flush with the exterior wall face and having a lower air inlet separated from an upper gas outlet by baffles, is connected with the heater unit by air or gas flow conduits which are thermally isolated one from the other by special gasket and mounting arrangements. |