Means for governing the air supply to a furnace

Details Means for governing the air supply to a furnace Means for governing the air supply to a furnace

1975-09-29

1977-06-07

Sprague, Kenneth W.

Furnaces

Tuyeres

122 65, 12235B, F23L 500

Patent

active

040276040

ABSTRACT:
Air governing means at a refuse burning furnace may include a sleeve, which is axially reciprocable with respect to an air passage port in the furnace wall; in order to produce a high air velocity, the air is forced through a narrow, annular clearance between the perimeter of the inward end of the sleeve, and the passage port, the outward end of the sleeve being normally closed; to accommodate for axial mis-alignment at the outward end, the sleeve is adapted to cooperate with a tubular member projecting from the back wall of a plenum chamber supplying the passage port with air; the tubular member is provided with a head displaceable in a plane perpendicular to the longitudinal axis of the tubular member, and further having a tapering front end to facilitate re-introduction into the sleeve, when the latter, in order to perform a scraping function, has performed a stroke exceeding normal governing movement.

REFERENCES:
patent: 2696979 (1954-12-01), Berge
patent: 2831535 (1958-04-01), Lange
patent: 2966209 (1960-12-01), Pegrum
patent: 3742916 (1973-07-01), Wessberg et al.
patent: 3900011 (1975-08-01), Stenlund

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