GAS BURNER

摘要

A gas burner (10) that produces a yellow flame for use in a fireplace assembly, including front and rear non-combustible logs (16, 18) and at least one transverse or cross over log (20) supported atop the front and rear logs. The burner includes an elongated generally tubular sheet metal body (10a) having an inlet end, a closed distal end (22) and a tubular segment extending between the ends. The inlet end is formed to define a gas orifice holder (40) which is adapted to mount a gas orifice element. The inlet end is further formed to define at least one primary air opening arranged to admit combustion air into the tubular burner segment. A bluff body (50) is located downstream from the gas orifice element (32) and is positioned such that gas emitted by the orifice impinges on the buff body (50). Rows of flame ports (32) are defined in the tubular segment and are arranged to create a desired predetermined flame pattern. The flame ports (32) are slot-like in construction and include tabs (80a) which determine the effective size of the ports.