Patent ID: 6872070
Filing Date: 2005-03-29
Classification: F23C,F23D,Y02E

Abstract:
1. A self-recuperative radiant tube burner assembly with improved flame stability comprising: a U-tube housing having a first substantially linear tube housing element, a second substantially linear tube housing element and a toroidal tube housing element, said first housing element having a first and a second end, said second housing element having a first and a second end, said third toroidal housing element having a first end and a second end, said second end of the first housing element being joined to the first end of the toroidal housing element, said second end of the second housing element being joined to the second end of the toroidal housing element, the U-tube housing having a central axis extending between the first end of the first housing element and the first end of the second housing element; two flame holders for a diffusion flame burner, each flame holder having a first end and a second end, wherein the two flame holders are capable of holding a substantially equivalent flame of combustion simultaneously during normal burner operation; a first flame holder being positioned in the first end of the first housing element and a second flame holder being positioned in the first end of the second housing element; the first flame holder having a first inner flame tube axially spaced from the second end of the flame holder by a gap and positioned at the second end of the first housing element; and the second flame holder having a second inner flame tube axially spaced from the second end of the first flame holder by a gap and positioned at the second end of the second housing element.