SAFETY COMBUSTION CONTROLLING METHOD USING GAS PRESSURE SENSOR IN BOILER

摘要

PURPOSE: A method for controlling safety combustion of a boiler by using a sensor detecting first gas pressure is provided to minimize residual gas existing in a container as the combustion is performed by maximally securing a range of perfect combustion by the shortage of gas pressure. CONSTITUTION: A method for controlling safety combustion of a boiler by using a sensor detecting first gas pressure comprises the following steps: each setting maximum control heat capacity (Qmax) and minimum control heat capacity (Qmin) to maximum gas pressure (Pmax) and minimum gas pressure (Pmin) in a control unit; detecting gas pressure (Pin) currently supplied through a sensor detecting first gas pressure and determining whether or not it is less than maximum gas pressure; setting the maximum gas pressure relative to the maximum control heat capacity to be low as a predetermined rate (A%) if the current gas pressure is less than the maximum gas pressure; and stopping the combustion of the boiler if the current gas pressure is less than the minimum gas pressure or the maximum gas pressure is less than gas pressure (Poff) in a range in which the predetermined proportional control is not possible. [Reference numerals] (AA) Control heat capacity; (BB) Maximum control heat capacity (Qmax) = gas pressure (Pmax); (CC) Minimum control heat capacity (Qmin) = gas pressure (Pmin); (DD) Input first gas pressure (Pin); (EE) Reset the maximum gas pressure (Pmax) relative to the maximum control heat capacity (Qmax) to be low as a predetermined rate (A%); (FF) Safety device