Radiant heater burner construction

Claim 1

A radiant heat generator comprising, in combination, a cupshaped plenum enclosure having an open end, a fuel entrance into said enclosure which is spaced rearwardly from said open end, a peripheral mounting flange extending around said open end, a primary screen comprising at least two contiguous layers of fine metal mesh extending across said open end and with the edge of the innermost one of said layers lying directly against said flange, a reverborator grid positioned over the open end of said enclosure, said reverborator grid having a generally planar body, return walls at the edges of said body and outwardly extending edges on said return walls, the outer edges of said reverborator grid lying directly against the edges of the front one of said screen layers, means for securely retaining said screen and said grid against said mounting flange, and a baffle mounted generally parallel to said screen and within said enclosure between said fuel entrance and said screen, said baffLe extending substantially across said enclosure to define gas passages between the rear of said enclosure and the open end thereof, at least two opposed edges of said baffle having at least one extending tab, said plenum enclosure having shaped channels adapted to receive said tabs, said channels extending substantially normal to said baffle and screen whereby said baffle can be inserted within said plenum enclosure prior to mounting of said screen by sliding it normally into said open end, with the ends of said channels defining the distance of said baffle from said screen.