Fuel burner sequencing device with safety checking means

Details Fuel burner sequencing device with safety checking means Fuel burner sequencing device with safety checking means

1977-05-25

1978-07-18

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

With test circuit checking or analyzing flame sensing...

431 31, 431 60, 431 78, F23Q 2300

Patent

active

041012585

ABSTRACT:
A fuel burner sequencing means is disclosed which utilizes a bistable or alternate action switching means for safety checking. The bistable switching means is specifically disclosed as a bistable relay that operates at the start of the cycle, and at the end of the cycle to check the operability of the safety checking means. This same bistable relay means is used as a lockout means in the event of the failure of flame when a flame should exist in the burner, or when a flame is indicated and none should be present.

REFERENCES:
patent: 3143162 (1964-08-01), Graves
patent: 3644748 (1972-02-01), Lord
patent: 3814569 (1974-06-01), Jacobsz

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