초록 ▼

Combustion control is effected by the use of a smoke detector and by solid state devices for the detection and amplification of electrical signals produced by a photoelectric cell for the purpose of controlling a motor which in turn adjusts fuel and air supplies. The electrical circuits include tria

Combustion control is effected by the use of a smoke detector and by solid state devices for the detection and amplification of electrical signals produced by a photoelectric cell for the purpose of controlling a motor which in turn adjusts fuel and air supplies. The electrical circuits include triac switches effective for running a servo-mechanism or motor in one direction or the other according to the density of the smoke in a flue venting combustion products from a combustion chamber. Light emitting diodes may be connected to op-amps for purposes of indicating the type of control being effected. A smoke accumulating means is employed for amplifying the products of combustion to facilitate the detecting and measuring of the same.

대표청구항 ▼

Smoke control apparatus comprising a combustion chamber, means for supplying fuel and oxygen containing gas into said chamber, means for venting the products of combustion from said chamber, smoke accumulating means for amplifying the density of said products of combustion to facilitate the detectin

Smoke control apparatus comprising a combustion chamber, means for supplying fuel and oxygen containing gas into said chamber, means for venting the products of combustion from said chamber, smoke accumulating means for amplifying the density of said products of combustion to facilitate the detecting and measuring of the same, photoelectric means providing an electrical signal in accordance with the thusly amplified density of the products of combustion, electrical circuit means for processing said electrical signal, and servo-mechanism means operated by said circuit means to control the means for supplying fuel and oxygen containing gas to optimize the supply thereof and therefore said density; said circuit means comprising bridge means to control said servo-mechanism means, at least one first electronic switch operable when said density is equal to or less than a predetermined standard, at least one second electronic switch operable when said density is greater than said standard, said switches being coupled to and operating said bridge means, and further means coupled to and operating said bridge means, and further means coupled to said photoelectric means and to said switches to operate the latter in response to levels of said signal whereby to control said servo-mechanism means through said bridge means.