CN103900103B - A kind of control method of air blast burner - Google Patents
A kind of control method of air blast burner Download PDFInfo
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- CN103900103B CN103900103B CN201410152860.7A CN201410152860A CN103900103B CN 103900103 B CN103900103 B CN 103900103B CN 201410152860 A CN201410152860 A CN 201410152860A CN 103900103 B CN103900103 B CN 103900103B
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Abstract
The present invention relates to a kind of control method of air blast burner, comprise the following steps: electric controller receives firing command, carry out residual fire detection, overheating detection and rotation speed of fan successively and detect; Electric controller controls air blast and purges burner box with rotating speed a; The rotating speed that controller controls air blast is the fire speed b set, initial igniter, and the electric stop valve controlled on gas proportion valve assembly is opened, and regulates mouth to be opened into igniting aperture the electricity on gas proportion valve assembly by the initial firing current of setting; Light a fire successfully, the combustion power that electric controller inputs according to operator, Synchronization Control electricity regulates aperture and the blower speed of mouth; When electric controller receive operator quit work instruction time, close gas proportion valve assembly, and maintain air blast and to remain in operation setting-up time.Compared with prior art, the present invention has that heat exchanger effectiveness is high, security advantages of higher.
Description
Technical field
The present invention relates to a kind of method for controlling combustion, especially relate to a kind of control method of air blast burner.
Background technology
What present common air blast burner adopted is all diffusion type blast roasting mode, this mechanism is simple, easily manufactured, but it is low to there is combustion intensity, burning needs organization volume large, high material consumption, the size of more excess air-blower fan must be supplied and power all will strengthen for making sufficient combustion, ignition temperature is low-defect such as the thermal efficiency is low, main cause be flame after firing just ambient air combustion-supporting under burn, and the flame formed has a kind of insulating effect to air, the center making air be difficult to enter into flame fully contacts with combustion gas thus realizes burning completely.
The way of current employing is exactly greatly increase air quantity delivered, by the supply of large quantity of air, the contact probability of gas flame and combustion air is made to increase, even if so still there is unburnt hidden danger, and the pouring in of large quantity of air, the high-temperature flue gas that burning is produced is lowered the temperature by Dilution air, the phenomenon produced when concrete use is exactly the temperature decline of flame, according to the theory of thermal conduction study, between two kinds of cold and hot matchmakers, the temperature difference is larger, heat exchanger effectiveness is higher, so the heat exchange that flame temperature is reduced in use procedure and on kitchen range between pot is just deteriorated, so the thermal efficiency is low.
In order to make, burner is efficient, stable operation, Chinese patent CN103629692A discloses a kind of decentralized control method of boiler-burner, the method is by carrying out acquisition monitoring to the related data of boiler-burner, can carry out centralized Control to production process efficiently, but the method can not solve unburnt problem.
Summary of the invention
Object of the present invention is exactly provide the control method of the air blast burner that a kind of heat exchanger effectiveness is high, security is high to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of control method of air blast burner, the air blast burner that the method controls comprises burner box, air blast, electric controller and operator, flame current inductive needle, gas proportion valve assembly, igniter and temperature relay is provided with in described burner box, described electric controller connects air blast, operator, flame current inductive needle, gas proportion valve assembly, igniter and temperature relay respectively, and described gas proportion valve assembly comprises electric stop valve and electricity regulates mouth;
Described control method comprises the following steps:
Safety detection step, electric controller receives firing command, carries out residual fire detection, overheating detection and rotation speed of fan successively and detects;
Front cleaning step, electric controller controls air blast and purges burner box with rotating speed a, 2000rpm≤a≤4000rpm, and purge time is 0.5 ~ 12s, and the ventilation index of purging is 1.5 ~ 12 times;
Lighting up procedure, the rotating speed that electric controller controls air blast is the fire speed b set, b=(1/4 ~ 1/1.5) a, initial igniter, the electric stop valve controlled on gas proportion valve assembly is opened, and regulates mouth to be opened into igniting aperture the electricity on gas proportion valve assembly by the initial firing current of setting;
Combustion step, lights a fire successfully, the combustion power that electric controller inputs according to operator, and Synchronization Control electricity regulates aperture and the blower speed of mouth;
Stop step, when electric controller receive operator quit work instruction time, close gas proportion valve assembly, and maintain air blast and to remain in operation setting-up time.
Described residual fire detects and is specially: flame current inductive needle sensed current signal, and passes to electric controller, and electric controller judges whether current flow is less than 0.5 μ A, if so, then judges there is not residual fire, if not, then shows fault.
Described overheating detection is specially: temperature relay detects temperature in burner box, and passes to electric controller, and electric controller judges whether Current Temperatures exceedes design temperature, if so, then shows fault, if not, then judges that Current Temperatures is normal.
Described rotation speed of fan detects and is specially: electric controller controls air blast and starts, and judges whether blower speed is greater than 4000rpm, if so, then judges that air blast is normal, if not, then shows fault.
In described lighting up procedure, the firing action time of igniter is 1 ~ 10s, within this firing action time, and flame current inductive needle sensed current signal, electric controller judges whether the electric current detected is greater than 1 μ A, if so, then light a fire successfully, igniter cuts out, if not, then loss of ignition, igniter cuts out, and closes the electric stop valve on gas proportion valve assembly and electricity adjustment mouth simultaneously.
In described combustion step, according to current signal, the current signal that electric controller Real-time Collection flame current inductive needle detects, judges whether flame extinguishes, and if so, then shows fault, cuts off gas proportion valve assembly, if not, then judges normal;
The rotating speed of electric controller Real-time Collection air blast, judges that whether blower speed is abnormal, if so, then shows fault, cut off gas proportion valve assembly, if not, then judges normal;
The whether action of electric controller real-time judge temperature relay, if so, then shows fault, cuts off gas proportion valve assembly, if not, then judges normal.
Stop in step, described setting-up time is 5 ~ 300s.
Compared with prior art, tool of the present invention is in following advantage:
1) the present invention is before formal igniting, and electric controller carries out safety detection to each parts, improves the security of burner combustion;
2) before of the present invention, cleaning step effectively can be cleared up prefiring fuel gas and remained, and prevents ignition deflagrating of hot;
3) the present invention is when cutting off gas proportion valve assembly, and maintain air blast running certain hour, the residual combustion gas in abundant emptying burner and imperfect combustion gas-air mixture, reduce the surface temperature of burner unit entirety, reach safe object;
4) Synchronization Control electricity of the present invention regulates aperture and the blower speed of mouth, and the heat exchanger effectiveness improving combustion gas is high.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of control method of air blast burner, the air blast burner that the method controls comprises burner box, air blast, electric controller and operator, flame current inductive needle is provided with in burner box, gas proportion valve assembly, igniter and temperature relay, electric controller connects air blast respectively, operator, flame current inductive needle, gas proportion valve assembly, igniter and temperature relay, gas proportion valve assembly comprises electric stop valve and electricity regulates mouth, operator primary responsibility sends use and withdraw from service instructions, and alarm code when showing using state and fault generation.
As shown in Figure 1, this control method comprises the following steps:
Step 101, power switch starts, and the power supply indicator on operator is bright, and firepower indication LED arranges display by non-power-off hop count last time, arranges display for the first time or after power-off by maximum fire;
Step 102, ignition switch starts;
Step 103, electric controller receives firing command, carries out residual fire and detects: flame current inductive needle sensed current signal, and pass to electric controller, electric controller judges whether current flow is less than 0.5 μ A, if so, then judges there is not residual fire, if not, then show fault, failure code is 72;
Step 104, electric controller carries out overheating detection: temperature relay detects temperature in burner box, and passes to electric controller, electric controller judges whether Current Temperatures exceedes design temperature, if so, then shows fault, failure code is 11, if not, then judges that Current Temperatures is normal;
Step 105, air blast starts;
Step 106, electric controller carries out rotation speed of fan detection: electric controller controls air blast and starts, and judges whether blower speed is greater than 4000rpm, and if so, then judge that air blast is normal, if not, then show fault after 2s, failure code is 61;
Step 107, electric controller controls air blast and purges burner box with rotating speed a, a=2000rpm, in the present embodiment, purge time is 5s, and the ventilation index of purging is 1.5 ~ 12 times, object is that clearing up prefiring fuel gas remains, and prevents ignition deflagrating of hot;
Step 108, the rotating speed that electric controller controls air blast is the fire speed b set, and b=(1/1.5) a, if air blast does not reach fire speed, then shows failure code 61 after 10s;
Step 109, initial igniter, after 0.5s, the electric stop valve controlled on gas proportion valve assembly is opened, and regulates mouth to be opened into igniting aperture the electricity on gas proportion valve assembly by the initial firing current of setting;
Step 110, the firing action time of igniter can be set to 1 ~ 10s, within this firing action time, if light a fire successfully, then inductive needle can detect the current signal of flame, pass to electric controller, flame current inductive needle sensed current signal, electric controller judges whether the electric current detected is greater than 1 μ A, if, then light a fire successfully, after 1s, igniter cuts out, and burning indicator lamp is bright, if not, then loss of ignition, after 5s, igniter cuts out, and closes the electric stop valve on gas proportion valve assembly and electricity adjustment mouth simultaneously; If firing action more than 3 times, then shows fault;
Step 111, if be provided with pan testing agency, then detect on burner and whether be placed with pan, if have, then the combustion power that inputs according to operator of electric controller, Synchronization Control electricity regulates aperture and the blower speed of mouth, and then control gas quantity and air quantity, if not, then after 5s, electric controller controls by minimum combusting firepower aperture and the blower speed that electricity regulates mouth;
Step 112, in combustion process, according to current signal, the current signal that electric controller Real-time Collection flame current inductive needle detects, judges whether flame extinguishes, if so, then shows failure code 12, cuts off gas proportion valve assembly, if not, then judges normal;
The rotating speed of electric controller Real-time Collection air blast, judges blower speed whether abnormal (extremely referring to be less than 2000rpm or be greater than 4000rpm), if so, then shows failure code 61, cut off gas proportion valve assembly, if not, then judges normal;
The whether action of electric controller real-time judge temperature relay, if so, then shows fault, cuts off gas proportion valve assembly, if not, then judges normal;
Electric controller can automatic decision cause danger again state time cut off gas supply, simultaneously blower fan remains in operation with air cooling-down, dilutes the concentration of combustion gas simultaneously and discharges combustion system as early as possible, reaching safe object;
In step 113, electric controller, according to the firepower conditioning signal of operator, controls aperture and blower speed that electricity regulates mouth, and then controls gas quantity and air quantity; During burning, the air quantity of blower fan changes with the power synchronous of fuel gas buring, combustion power strengthens then air quantity and strengthens, otherwise then diminish, the power and the fuel gas buring amount that realize the synchronous change fuel gas buring of fuel gas buring amount and air blast discharge quantity of fan are set by the selection on operator and determine, operator hoists adjustment combustion power, then electric controller increases electric current and the blower current that electricity regulates mouth, and the combustion gas amount being and the discharge quantity of fan of air blast synchronously increase, otherwise synchronously reduce;
In step 114, after closing gas proportion valve assembly, electric controller maintains air blast and to remain in operation setting-up time, setting-up time can be 5 ~ 300s, in the present embodiment, air blast continues 30s, the residual combustion gas in emptying burner and imperfect combustion gas-air mixture, reduces the surface temperature of burner unit entirety, make it in a safe condition, wait for next operational order;
In step 115, power-off, each indicator lamp on operator is closed, and burner resets.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, in the present embodiment, the a=4000rpm in step 107, purge time is 0.5s.
Embodiment 3
The difference of the present embodiment and embodiment 1 is, in the present embodiment, the a=3000rpm in step 107, purge time is 12s.
Claims (7)
1. the control method of an air blast burner, it is characterized in that, the air blast burner that the method controls comprises burner box, air blast, electric controller and operator, flame current inductive needle, gas proportion valve assembly, igniter and temperature relay is provided with in described burner box, described electric controller connects air blast, operator, flame current inductive needle, gas proportion valve assembly, igniter and temperature relay respectively, and described gas proportion valve assembly comprises electric stop valve and electricity regulates mouth;
Described control method comprises the following steps:
Safety detection step, electric controller receives firing command, carries out residual fire detection, overheating detection and rotation speed of fan successively and detects;
Front cleaning step, electric controller controls air blast and purges burner box with rotating speed a, 2000rpm≤a≤4000rpm, and purge time is 0.5 ~ 12s, and the ventilation index of purging is 1.5 ~ 12 times;
Lighting up procedure, the rotating speed that electric controller controls air blast is the fire speed b set, b=(1/4 ~ 1/1.5) a, initial igniter, the electric stop valve controlled on gas proportion valve assembly is opened, and regulates mouth to be opened into igniting aperture the electricity on gas proportion valve assembly by the initial firing current of setting;
Combustion step, lights a fire successfully, the combustion power that electric controller inputs according to operator, and Synchronization Control electricity regulates aperture and the blower speed of mouth;
Stop step, when electric controller receive operator quit work instruction time, close gas proportion valve assembly, and maintain air blast and to remain in operation setting-up time.
2. the control method of a kind of air blast burner according to claim 1, it is characterized in that, described residual fire detects and is specially: flame current inductive needle sensed current signal, and pass to electric controller, electric controller judges whether current flow is less than 0.5 μ A, if so, then judges there is not residual fire, if not, then fault is shown.
3. the control method of a kind of air blast burner according to claim 1, it is characterized in that, described overheating detection is specially: temperature relay detects temperature in burner box, and pass to electric controller, electric controller judges whether Current Temperatures exceedes design temperature, if so, then shows fault, if not, then judge that Current Temperatures is normal.
4. the control method of a kind of air blast burner according to claim 1, is characterized in that, described rotation speed of fan detects and is specially: electric controller controls air blast and starts, and judge whether blower speed is greater than 4000rpm, if so, then judge that air blast is normal, if not, then fault is shown.
5. the control method of a kind of air blast burner according to claim 1, is characterized in that, in described lighting up procedure, the firing action time of igniter is 1 ~ 10s, within this firing action time, and flame current inductive needle sensed current signal, electric controller judges whether the electric current detected is greater than 1 μ A, if so, then light a fire successfully, igniter cuts out, if not, then loss of ignition, igniter cuts out, and closes the electric stop valve on gas proportion valve assembly and electricity adjustment mouth simultaneously.
6. the control method of a kind of air blast burner according to claim 1, it is characterized in that, in described combustion step, according to current signal, the current signal that electric controller Real-time Collection flame current inductive needle detects, judges whether flame extinguishes, if, then show fault, cut off gas proportion valve assembly, if not, then judge normal;
The rotating speed of electric controller Real-time Collection air blast, judges that whether blower speed is abnormal, if so, then shows fault, cut off gas proportion valve assembly, if not, then judges normal;
The whether action of electric controller real-time judge temperature relay, if so, then shows fault, cuts off gas proportion valve assembly, if not, then judges normal.
7. the control method of a kind of air blast burner according to claim 1, is characterized in that, stop in step, described setting-up time is 5 ~ 300s.
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| CN201410152860.7A CN103900103B (en) | 2014-04-16 | 2014-04-16 | A kind of control method of air blast burner |
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| CN201410152860.7A CN103900103B (en) | 2014-04-16 | 2014-04-16 | A kind of control method of air blast burner |
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| CN103900103B true CN103900103B (en) | 2016-01-06 |
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| CN107339809B (en) * | 2017-01-24 | 2019-09-20 | 宁波方太厨具有限公司 | A kind of method for controlling combustion of gas heater |
| CN107339810B (en) * | 2017-01-24 | 2019-09-20 | 宁波方太厨具有限公司 | A kind of method for controlling combustion of the gas heater based on DC fan |
| CN107339807B (en) * | 2017-01-24 | 2019-09-20 | 宁波方太厨具有限公司 | A kind of method for controlling combustion of gas heater |
| CN107339808B (en) * | 2017-01-24 | 2019-09-20 | 宁波方太厨具有限公司 | A kind of method for controlling combustion of the gas heater based on lambda sensor |
| CN107339811B (en) * | 2017-01-24 | 2019-07-26 | 宁波方太厨具有限公司 | A method of detection gas heater burning gases whether standard |
| US10655846B2 (en) | 2017-09-18 | 2020-05-19 | Haier Us Appliance Solutions, Inc. | Gas burner assembly for a cooktop appliance |
| US20190086078A1 (en) * | 2017-09-18 | 2019-03-21 | Haier Us Appliance Solutions, Inc. | Gas burner assembly for a cooktop appliance |
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| US11460190B2 (en) | 2019-07-29 | 2022-10-04 | Haier Us Appliance Solutions, Inc. | Gas burner assembly for a cooktop appliance |
| KR20210135710A (en) | 2020-05-06 | 2021-11-16 | 엘지전자 주식회사 | Air conditioning system and method for controlling same |
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| JPH0252920A (en) * | 1988-08-18 | 1990-02-22 | Toto Ltd | Exhaust fan rotating speed controller for hot water supply apparatus |
| KR920008882B1 (en) * | 1989-11-06 | 1992-10-10 | 삼성전자 주식회사 | Overheating detection method for combustion apparatus |
| CN100458614C (en) * | 2006-04-06 | 2009-02-04 | 台湾樱花股份有限公司 | Electromagnetic valve control circuit and electromagnetic valve control method for water heater |
| CN100422639C (en) * | 2006-12-08 | 2008-10-01 | 北京建筑工程学院 | Control system for catalytic combustion |
| CN101576313B (en) * | 2008-05-07 | 2011-07-06 | 中冶焦耐自动化有限公司 | Method for controlling automatic ignition of tube furnace |
| CN101936526A (en) * | 2009-07-01 | 2011-01-05 | 青岛威特水煤浆技术开发有限公司 | Full automatic water coal slurry burner and control method by adopting same |
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