초록 ▼

An apparatus and method for controlling combustion in a furnace is described. The flue gas content is monitored to determine the oxygen and/or carbon dioxide components therein to provide a control signal which is compared with a control signal from a fuel flow sensor to provide an infinitely variab

An apparatus and method for controlling combustion in a furnace is described. The flue gas content is monitored to determine the oxygen and/or carbon dioxide components therein to provide a control signal which is compared with a control signal from a fuel flow sensor to provide an infinitely variable speed control for a blower which supplies combustion air to the furnace being controlled. The speed of the blower is varied in accordance with the flue gas content and the fuel flow rate to provide a continuously variable blower speed to at all times effect optimum combustion efficiency.

대표청구항 ▼

A method of controlling combustion in a furnace of a furnace system in which the rate at which fuel is supplied to the furnace is varied in accordance with the load being experienced by the furnace and the operation of a fan is regulated to vary the flow rate of combustion air supplied to the furnac

A method of controlling combustion in a furnace of a furnace system in which the rate at which fuel is supplied to the furnace is varied in accordance with the load being experienced by the furnace and the operation of a fan is regulated to vary the flow rate of combustion air supplied to the furnace, comprising the steps of: measuring the rate at which fuel is supplied to the furnace, providing a control command on the basis of the fuel supply rate to the furnace and air and gas flow characteristics of the furnace system, and regulating operation of the fan to thereby control combustion air flow in accordance with the value of said control command.