Device for boilers

Combustion – Combustion products return structure – Recirculation about mixing or combustion chamber wall or baffle

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F23L 700

Patent

active

058138480

ABSTRACT:
A device for an oil burner has a ceramic tube (1) inside which a shorter tube (61) is arranged, so that there is a slot between the tubes. The device stands freely in the combustion room of the boiler, and it is coaxial with an oil burner (66) that is mounted in the boiler room wall. Combustion fumes mixed with fresh air from the fan of the oil burner is sucked into the slot that ends inside the ceramic tube. The oil burner flame in the inner tube (61) heats this inner tube that in turn heats the air that is sucked through the slot and is secondary combustion air. The slot has screw-formed ridges that impart a heavy rotation to the secondary air; a rotation that is counter to the rotation of the primary air of the burner. Since the secondary air is hot and rotates heavily, the final combustion will be very efficient.

REFERENCES:
patent: 1699732 (1929-01-01), Balmat
patent: 2110209 (1938-03-01), Engels
patent: 4380429 (1983-04-01), LaHaye et al.
patent: 4575332 (1986-03-01), Oppenberg et al.
patent: 5350293 (1994-09-01), Khinkis et al.
Development of a Vaporizing Oil Burner Thermal Research & Engineering Corporation, J.A. Johnson & R.H. Eustis, Sep., 3, 1952, 17 pages.

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