Flame detection arrangements and the like

Details Flame detection arrangements and the like Flame detection arrangements and the like

1977-11-22

1979-12-04

Favors, Edward G.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

328 6, 340579, 431266, F23H 508

Patent

active

041770331

ABSTRACT:
A circuit arrangement for utilizing the "flame (or hot gas) rectification" effect in an air gap is provided in which the air gap is defined between electrodes one of which is connected to a source of A.C. and the other of which is connected to earth or other suitable potential. A non-linear resistance device is connected in series with the air gap and a voltage sensing is provided for detecting a voltage across the non-linear resistance device, the arrangement being such that when no flame or hot gas is present in the air gap the air gap and the non-linear resistance device are virtually open-circuited so that the A.C's alternated by filter means to zero volts D.C. with a small ripple, superimposed thereon at the input to the voltage sensing circuit, whereas when flame or hot gas is present in said air gap the non-linear resistance produces a negatively predominant signal which after filtering provides a negative D.C. voltage shift with a small percentage A.C. ripple superimposed at the input to the voltage sensing circuit.

REFERENCES:
patent: 2112736 (1938-03-01), Cockrell
patent: 3740574 (1973-06-01), Taylor
patent: 3836857 (1974-09-01), Ikegami et al.
patent: 4088984 (1978-05-01), Muramoto et al.

Affiliated with

Also associated with

Rating

Flame detection arrangements and the like does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flame detection arrangements and the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flame detection arrangements and the like will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-89801