Control system for a burner

Details Control system for a burner Control system for a burner

1978-05-19

1980-12-09

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

236 15E, F23N 500

Patent

active

042381851

ABSTRACT:
This invention is a control for a burner enabling it to operate efficiently with very little excess air but providing a main control for the fuel and for the combustion air in response to demand, and an auxiliary control in response to the amount of free oxygen in the products of combustion. The latter quantity can be measured by a zirconia cell, and there are means for controlling its temperature accurately so that the reading is reliable. The controls in response to demand and excess air respectively are applied alternately in a cycle with a period of no control to enable the effect of an adjustment to be established before further control is applied.

REFERENCES:
patent: 3404836 (1968-10-01), Hickam
patent: 3503553 (1970-03-01), Shomaker
patent: 3549089 (1970-12-01), Hamlett
patent: 3616274 (1971-10-01), Eddy
patent: 3947217 (1976-03-01), Graat et al.
patent: 4150939 (1979-04-01), Hayes

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