초록 ▼

The invention is a fuel burner system including an electrical control circuit for initiating fuel flow to a burner in response to a call-for-heat from a condition responsive sensor, and an electrical ignitor for igniting the fuel emanating from the burner. Combustion or purging air is directed to th

The invention is a fuel burner system including an electrical control circuit for initiating fuel flow to a burner in response to a call-for-heat from a condition responsive sensor, and an electrical ignitor for igniting the fuel emanating from the burner. Combustion or purging air is directed to the burner by a fan, the integrity of which is monitored by a sensor circuit that produces a fault signal in response to rotation of the fan at any speed in a given range of speeds. An inhibit circuit inhibits the control circuit to prevent opening of a fuel supply valve in response to the presence of the fault signal. Fan rotation at speeds either above or below a predetermined normal range indicates a malfunction and results in the fault signal that prevents the initiation of fuel flow and a try for ignition.

대표청구항 ▼

A fuel burner ignition system comprising: electrical igniter means for igniting fuel emanating from a burner; a valve controlling the flow of fuel to the burner; condition responsive means; electrical start-up control circuit for opening said valve and energizing said igniter means in response to a

A fuel burner ignition system comprising: electrical igniter means for igniting fuel emanating from a burner; a valve controlling the flow of fuel to the burner; condition responsive means; electrical start-up control circuit for opening said valve and energizing said igniter means in response to a call-for-heat signal from said condition responsive means; a fan means for forcing air by the burner; a sensor circuit for monitoring rotation of said fan and producing a speed signal indicative of the rotational speed thereof; and inhibit circuit means that produces a fault signal that prevents energization of said igniter means and opening of said valve in response to a value of said speed signal indicating any rotational speed of said fan means outside of a given range of speeds.