Heating – Processes of heating or heater operation – Treating an article – container – batch or body as a unit
Patent
1984-05-10
1985-10-15
Dority, Jr., Carroll B.
Heating
Processes of heating or heater operation
Treating an article, container, batch or body as a unit
431 12, 431 75, 431 63, F23D 1300
Patent
active
045471509
ABSTRACT:
A combustion controller (C) controls the relative rates at which a combustion component source (B) supplies fuel, air, and oxygen to nozzles (A). A fuel source (30) supplies fuel to the burners at a rate (50 in FIG. 2) which is appropriate to produce a desired amount of heat. A blower (32) supplies air at a fixed rate (52b) and an oxygen source supplies oxygen gas at a rate (54) in proportion to the fuel supply rate such that stoichiometrically balanced combustion is maintained. To decrease the combustion rate, the air supply rate remains constant (52b) as the fuel and oxygen rich gas supply rates are decreased. After the oxygen rich gas supply rate reaches zero, the combustion rate is further reduced by decreasing the fuel supply rate and the air supply rate (52a) in stoichiometric proportion. In this manner, a relatively high nozzle velocity is maintained over a wide range of combustion rates.
REFERENCES:
patent: 1325116 (1919-12-01), Sebille
patent: 3345846 (1967-10-01), Hess
patent: 3733165 (1973-05-01), Nakagawa et al.
patent: 3894834 (1975-07-01), Estes
patent: 4017253 (1977-04-01), Wielang et al.
patent: 4118172 (1978-10-01), Noir et al.
Dority Jr. Carroll B.
Midland-Ross Corporation
Switzer H. Duane
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