METHOD FOR CONTROLLING COMBUSTION IN HEATING OPERATION BY USING TEMPERATURES OF DISCHARGING HEATING WATER AND RETURNING HEATING WATER IN GAS BOILER

摘要

The present invention is quickly determined by using temperature (Tao Te, tin) the combustion heat needed for heat Qd and user setting temperature (Tset), it is obtained from the thermistor 1 being mounted on the supravasal furnace discharge conduit of backheat and thermistor 2 using the revolving speed M of heat Calculation scavenger fan, by calculating gas ratio valve control burning thermal conditioning current value PmA, for controlling the amount of burning gases by sensing revolving speed M/RTI;Control method burning includes the following steps: to detect a low-level and a ground level and the state for detecting thermistor TH1 and TH2 and remote controllers using the temperature of the hot driving water of gas boiler according to the present invention and heat recovery water in a heat operation,Detect whether that water flow switch is turned on and detects whether that hydraulic pressure switch is being currently used by user,Detect whether that water flow switch is turned off,Detect whether that water flow switch is turned off,(Tset),One outlet temperature(Tao Te),One temperature tin of heating(Tin),Respectively,Determine whether temperature within a conventionally used heat operation temperature range,In order to determine input user,According to preparatory,The control of gas proportioning valve opening simultaneously/closing setting quantity,Execute a predetermined time(Asec)Compulsory burning,It calculates the quantity Qd of the scavenger fan of the total amount of heat Qd based on calculating and drives scavenger fan,By the number for calculating the revolution of the scavenger fan of the total amount of heat Qd based on calculating; A current value is calculated for controlling revolving speed of the proportioning valve from scavenger fan,When it determines that the operation of scavenger fan is normal,Compare a related predetermined time(Bsec)Number(Z),Maintain the proportional burning by using proportioning valve current value control proportioning valve,It calculates when in a predetermined temperature value(CC ,DC)(TOne)Within,The temperature difference(TT)In user setting temperature(Tset)And return temperature(Tin)Between when according to proportional burning(Tset)Result and hot water temperature(Tao Te)The temperature and temperature in hot discharge side Tao Te between a difference(| Tao Te-tin(Xi-tin))Tank backheat side is in predetermined temperature value(EC ,FC)It is different between 2Determining,No matter a predetermined temperature value(GC ,HC)In a predetermined time(Isec)In a predetermined temperature value during C(GC ,HC)Within,Collect the KC between temperature Tset in user)With difference and hot water temperature Tao Te(In user setting temperature(Tset)And return water temperature(Tin)Between TOne(T)In predetermined temperature value(LC and MC)Between 2Determining whether a set period(Psec)It is a predetermined temperature value between(NC ,0C)One predetermined time(Psec),Re-And turn off the tap flow switch and when the maximum number of counting be greater than a scheduled input value when terminate water flow switch.