Control system for redundant valves

Details Control system for redundant valves Control system for redundant valves

1978-11-06

1980-07-08

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Shutdown by sensed absence of flame in proving period

431 66, 431 78, F23N 500

Patent

active

042115264

ABSTRACT:
An electronic control system for safely operating a pair of redundant solenoid type valves is disclosed. The system utilizes an alternating current potential for energizing the valves. The first valve is energized across the applied potential and then is placed in series with the second valve. The series combination is selected so that once the valves are energized they will stay energized in the series configuration.

REFERENCES:
patent: 3026932 (1962-03-01), Algino
patent: 3597139 (1971-08-01), Elders
patent: 3603708 (1971-09-01), Good
patent: 3619097 (1971-11-01), Clay
patent: 3807933 (1974-04-01), Fernstrom
patent: 3914092 (1975-10-01), Matthews

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