Combustion – Timer – programmer – retarder or condition responsive control – Of diverse feed or feed rate in starting – e.g. – enriching...
431 66, 431 77, F23N 500
The feature of the present invention is that in the control device of the combustion apparatus, comprising an operational amplifier which compares a capacitor voltage charged by a flame rod current, with a reference voltage, thereby to issue an unusual signal, the reference voltage or the capacitor voltage is changed according to the atmosphere temperature by utilizing a thermo sensitive element, thereby the comparing operation is executed correctly irrespective of the atmosphere temperature.
patent: 3540817 (1970-11-01), Tyler
patent: 3577209 (1971-05-01), Perkins
Matsushita Electric - Industrial Co., Ltd.
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