Abstract: A gas burner assembly for a poultry house heater having a head that is fabricated from a metal stamping process. The gas burner has a venturi tube which extends between a burner orifice and a burner head. The burner head is manufactured from a top plate and a bottom plate. The top and bottom plates define about forty upper half and lower half burner ports wherein the lower half ports of the bottom plate are in registry with the upper half ports in the top plate to define the ports for the gas burner. The interior of the head is shaped to form a chamber around the junction with the venturi tube having a height greater than said ports, and the interior surface of the head is smooth and free of sharp edges. The top and bottom plates are mechanically connected by a series of tabs and slots formed on the top and bottom plates.

Abstract: In a gas heater, a ceramic heater is used to ignite gas supplied to a gas burner. The ceramic heater is disposed in flame while the gas is burnt such that a change in the resistance value of the ceramic heater is sensed by a resistance value sensor to detect a flame extinction. Since the resistance value is varied between ceramic heaters, the deviation of the resistance value is compensated for depending on a reference value at a reference temperature of the ceramic heater so as to detect the flame extinction.

Abstract: An improved radiant heater for use in dusty environments and at low gas pressures. An open throat, single port burner, which is not subject to obstruction in dusty environments, directs combustion products vertically from a lower fuel input end to an upper flame-emanating end. The burner is adjustably mounted to a base unit so that air entrainment into the burner may be controlled by adjusting the distance between the base unit and the burner fuel input end. The burner conductance may be adjusted to operate at varying fuel input fluxes by attaching an area reduction means to the burner. The burner flame emanating end is directed into a combustion chamber which absorbs the heat generated by combustion and radiates the absorbed heat into the ambient. The lower surface of the combustion chamber has an aperture for receiving the burner flame emanating end, and acts as a heat shield. Control components, such as control circuitry and a fuel valve, are housed within the base unit, further shielding them from heat.

Abstract: A wind-resistant heating appliance has a housing with air inlet openings for sustaining combustion generating flue products inside that housing which also has an outlet for flue products. The heating appliance has a top structure above that outlet and the housing. A top wall of that top structure is penetrated with exhaust openings for flue products along opposite edges of that top structure. The outlet between the housing and the top structure is provided with a transverse outlet channel inside the top structure and has opposite ends open at the exhaust openings adjacent the opposite edges of the top structure. That transverse outlet channel is solidly enclosed along its top, sides and bottom between the opposite ends, except for the outlet between the housing and the top structure. The exhaustion of flue products in various wind conditions is further aided by increasing the speed of flue products passing through the outlet from the housing to the transverse outlet channel.

Abstract: A warming apparatus uses a gas burner which comprises a burner body and a plurality of tubular flame nozzles projecting radially from the burner body. The tubular nozzles have an internal diametr which ranges from about 1 mm to about 4 mm, and the projecting length of the tubular nozzles which extends from the burner body is within a range of from about 10 mm to about 40 mm. The nozzles have axially directed nozzle openings. The warming apparatus comprises the gas burner in combination with first and second radiators and a heat interception plate positioned between the burner body and the radiators.