초록 ▼

A compact forced air heater comprises a combustion chamber mounted in a housing, a burner module mounted across a back open end of the combustion chamber adjacent a back wall of the housing for producing heated air in the combustion chamber, an air intake in a front wall of the housing, and a high s

A compact forced air heater comprises a combustion chamber mounted in a housing, a burner module mounted across a back open end of the combustion chamber adjacent a back wall of the housing for producing heated air in the combustion chamber, an air intake in a front wall of the housing, and a high speed (3000 rpm) forced air blower mounted between the combustion chamber and the housing front end wall. The burner module includes a flameholder plate having a central primary air hole and circular rows of staggered secondary air holes surrounding the primary air hole. A flamespreader plate is mounted on the flameholder plate opposite the primary air hole, and an elongated right-angle burner tube, having a flattened locating-and-orienting end and at least one burner orifice in a sidewall of the tube, is located on an opposite side of the flameholder plate with the burner orifice aligned with the primary air hole and the flamespreader plate. An ignitor and a thermocouple are also mounted on the flameholder plate. The flameholder plate may be mounted vertically, with corners of the plate bent to form ears for increasing air turbulence and to act as afterburners.

대표청구항 ▼

A compact forced air heater, which comprises: a housing; a combustion chamber mounted in said housing and having spaced parallel front and back open ends; a burner module mounted across the back open end of said combustion chamber adjacent a back end wall of said housing, for introducing fuel, mixin

A compact forced air heater, which comprises: a housing; a combustion chamber mounted in said housing and having spaced parallel front and back open ends; a burner module mounted across the back open end of said combustion chamber adjacent a back end wall of said housing, for introducing fuel, mixing fuel with combustion air, igniting said fuel-air mixture and stabilizing the resulting flame in said combustion chamber; an air intake in a front wall of said housing; and forced air blower means mounted across the front open end of said combustion chamber between said combustion chamber and the front wall of said housing, for drawing air through said air intake and through said housing in one direction into a rear space in back of said combustion chamber, and then in an opposite direction past and through said burner module into said combustion chamber, said forced air blower means also drawing heated air from said combustion chamber, and exhausting the heated air into a space to be heated. The compact forced air heater as recited in claim 10, in which said flameholder plate bent-over portions are in two segments, said segments including a larger segment which is inclined from the plate, and then a smaller tip segment which is bent inward relative to said larger segment and forming a V-shaped configuration. The forced air heater as recited in claim 24, wherein: the perforated flameholder plate has downstream inwardly directed ears which function as afterburners.