Combustion – Heated line section feeds flame holder – Flame enclosure comprises – or conducts heat to heated section
Patent
1980-08-05
1983-11-22
Dority, Jr., Carroll B.
Combustion
Heated line section feeds flame holder
Flame enclosure comprises, or conducts heat to heated section
431351, 431353, F23D 1502
Patent
active
044166133
ABSTRACT:
A novel burner, e.g. for a gaseous fuel is provided herein. The burner is an improvement on the conventional hand-held blowpipe type of burner including a cylindrical housing, a nozzle body provided with a mixing chamber, an axial gas inlet port to the mixing chamber, a plurality of radial air inlet ports to the mixing chamber, and an axially extending burner tube connected to the mixing chamber. The mixed gas is substantially completely burned in the burner tube. The improvement is an add-on to the conventional burner and takes the form of a self-cooling shield. The shield includes a disc-like, centrally apertured baffle secured at the extreme forward end of the cylindrical housing with the axially extending burner tube projecting through the central aperture thereof. The shield also includes an outer tubular member, secured concentrically to the cylindrical housing by a disc-like centrally apertured rear wall, the central aperture surrounding the cylindrical housing and being secured thereto. This provides the outer tubular shield as having a closed rear end and an annular open forward end. The shield also includes an inner tubular member secured concentrically within the outer tubular shield and to the disc-like baffle by a plurality of bracing connections. This provides the inner tubular member as having an annular open rear end and a circular open forward end. The outer tubular member and the inner tubular member define therebetween, an annular chamber for backflow of cooling air. The rear wall of the outer tubular member and the disc-like baffle define, therebetween, a rear cylindrical chamber.
REFERENCES:
patent: 1374045 (1921-04-01), Vezie
patent: 2804918 (1957-09-01), Raymond et al.
patent: 3849058 (1974-11-01), Pankow
patent: 4088437 (1978-05-01), Holzapfel
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