Method and system for controlling a selected zone in a fuel fire

Details Method and system for controlling a selected zone in a fuel fire Method and system for controlling a selected zone in a fuel fire

1983-07-18

1986-03-18

Smith, Jerry

Boots, shoes, and leggings

432 11, 432 18, 432 37, 432 54, 266 80, F27D 300

Patent

active

045772789

ABSTRACT:
A method and system is provided for controlling a selected zone in a fuel fired furnace of the type used for heating work as it moves through the zone from an entrant end to an exit end. The method and system includes providing a fuel fired burner at the exit end for propelling a flame toward the entrant end of the zone, controlling the firing rate or capacity of this flame in accordance with the temperature of the work adjacent the exit end of the zone, continuously establishing a gas temperature for the entrant end of the zone corresponding to the firing rate of the flame and then continuously controlling the length of the flame to obtain the established gas temperature at the entrant end of the zone. The combined adjustment of capacity and flame length in accordance with the measured temperature at the entrant end of the zone controls the heating profile through the zone and increases the efficiency of the heating zone. This method and system can be used in one or more zones of a multiple zone throughput gas fired furnace.

REFERENCES:
patent: 3236460 (1966-02-01), Wood et al.
patent: 3548171 (1970-12-01), Kodz
patent: 3604695 (1971-09-01), Steeper
patent: 4004138 (1977-01-01), Morooka et al.
patent: 4223385 (1980-09-01), Miller et al.
patent: 4255133 (1981-03-01), Tanifuji et al.
patent: 4338077 (1982-07-01), Shibayama et al.
patent: 4357135 (1982-11-01), Wilde et al.
patent: 4373364 (1983-02-01), Tanimoto e al.

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