Bell orifice plate for inshot combustion furnace

Details Bell orifice plate for inshot combustion furnace Bell orifice plate for inshot combustion furnace

1989-06-19

1990-07-03

Jones, Larry

Heat exchange

With thermal or acoustical blocker

126 99A, 126104R, 126114, 126112, 165 53, B22D 100

Patent

active

049382837

ABSTRACT:
A belled orifice inlet plate is provided for an induced draft combustion furnace heat exchanger of the type in which an inshot burner produces a hot gaseous combustion that is injected through an opening in the inlet plate into a combustion zone in the heat exchanger. The inlet plate has a flared collar that surrounds the opening at its periphery, and which extends a predetermined distance into the combustion zone. Preferably, the collar should have a depth on the order of one-quarter inch to one-half inch, and the flared portion should have a radius of curvature on the order of about one-quarter inch.

REFERENCES:
patent: 4476850 (1984-10-01), Pickering
patent: 4515145 (1985-05-01), Tallman et al.
patent: 4776320 (1988-10-01), Ripka et al.
Day and Night-Formula 1000 Brochure, date approx. 1987.

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