Safety device for butterfly dampers

Details Safety device for butterfly dampers Safety device for butterfly dampers

1975-08-21

1977-07-05

Cohan, Alan

Combustion

Correlation of fuel or power supply with component movements...

126286, F23N 300

Patent

active

040337138

ABSTRACT:
A safety device for butterfly dampers is mounted in the flue duct of oil fired central heaters and operated by a control device susceptible of rotating a damper element actuated by the pressure of fuel oil fed by a pump through an oil supply line to a burner head to open and close the flue duct. A valve device is mounted in the oil supply line between the oil pump and the burner head and controlled by a position indicator associated with the damper device. The rotation of the damper element is transferred to the position indicator who relays the signal to the valve device. Accordingly a rotation of the damper element toward the closing position will actuate the valve device to close the oil supply line and extinguish the heater.

REFERENCES:
patent: 2877834 (1959-03-01), Campbell
patent: 3010451 (1961-11-01), Hodgins
patent: 3405690 (1968-10-01), Burrus

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