Explosion prevention control system for a fuel-gas burning autom

Details Explosion prevention control system for a fuel-gas burning autom Explosion prevention control system for a fuel-gas burning autom

1980-06-23

1982-06-08

Miller, J. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

431 22, F23N 524

Patent

active

043342582

ABSTRACT:
An explosion prevention control system is provided for automatic ignition fuel-gas burning appliances to sample the atmosphere and, in response to a predetermined level of fuel-gas in the atmosphere, to deactivate the automatic ignition apparatus in the appliance and block the flow of fuel-gas in the gas distribution system.
An alarm can be provided to indicate that the control system is responding to fuel-gas concentrations in the atmosphere.
A latch-off switch can be provided for the automatic ignition apparatus to ensure that the automatic ignition apparatus remains deactivated until the latch-off switch is reset.

REFERENCES:
patent: 3609732 (1971-09-01), Kasahara
patent: 3744954 (1973-07-01), Faulkner
patent: 3766441 (1973-10-01), Gray
patent: 4171944 (1979-10-01), Hirschmann
patent: 4209291 (1980-06-01), Gandolfi et al.
patent: 4219806 (1980-08-01), Enemark
patent: 4245978 (1981-01-01), de Valle

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