CN105042862A - Closed loop combustion heating control method and system for gas appliance - Google Patents
Closed loop combustion heating control method and system for gas appliance Download PDFInfo
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- CN105042862A CN105042862A CN201510520854.7A CN201510520854A CN105042862A CN 105042862 A CN105042862 A CN 105042862A CN 201510520854 A CN201510520854 A CN 201510520854A CN 105042862 A CN105042862 A CN 105042862A
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Abstract
The invention discloses a closed loop combustion heating control method for a gas appliance. According to the method, an oxygen sensor is used for detecting the oxygen content value of exhausted tail gas; whether gas and air are combusted within the theoretical air-fuel ratio or not after being mixed for combustion is judged according to the magnitude of the oxygen content value; and the oxygen sensor feeds information back to a controller, the controller adjusts the rotating speed of a draught fan and the opening proportion of a gas proportional valve, and the air-fuel ratio is controlled to be the optimal gas and air mixing ratio for mixing. The method has the beneficial effects that gas is fully combusted, carbon emissions and nitrogen oxide emissions are reduced, and gas is saved.
Description
Technical field
The present invention relates to method and the burner thereof of gas heating, specifically the closed loop combustion heating control method of gas utensil and control system thereof.
Background technology
The combustion control technology that current burnt gas wall hanging furnace and gas heater use generally adopts blower fan constant rotational speed.Gas supply proportioning valve adjustment air demand, realizes flame and burns at burner surface, and the adjustment of air feed proportioning valve realizes flame size adjustable, in order to reach the object controlling water temperature.Also some combustion systems are had to have fan delivery adjustment technology.But all belong to open-loop control technology, accurately can not control air-fuel ratio, belong to a kind of open atmospheric combustion system.Do not realize the closed-loop control of air-fuel ratio, and the closed-loop control of combustion system, accurately can control air-fuel ratio, combustion emission and efficiency of combustion are all improved a lot.Along with country is to the attention of atmospheric environment, more and more higher to the emission request of burner, the Closed loop Control of combustion system, can improve the exhaust emission levels of burner greatly.Make Combustion System within chemically correct fuel.To the efficiency of combustion of gas utensil and toxic emission controlled.
Summary of the invention
In order to solve above-mentioned original technical problem, the invention provides that a kind of combustion heating is fast, water temperature control effects is good, the closed loop combustion heating control method of air and the gas utensil that combustion gas mixing is even, the toxic emission of combustion gas Thorough combustion is few and control system thereof.
The scheme solved the problems of the technologies described above is:
The closed loop combustion heating control method of gas utensil, comprises controller and combustion heat exchanger, described controller is electrically connected with lambda sensor, cooling-water temperature sensor, blower fan, gas ratio valve, ignition electrode respectively, controller is in holding state, when user wants water for heating, open outlet valve, current are passed through from combustion heat exchanger, user's start-up connector, lambda sensor, cooling-water temperature sensor, blower fan, gas ratio valve synchronous averaging works, controller controls igniting pin mark fire, combustion heat exchanger is burnt, controller controls the rear oxygen content after the combustion of lambda sensor detection combustion heat exchanger combustion chamber, feedback according to lambda sensor contains oxygen value, contrasted containing being worth by controller and set original oxygen, higher or on the low side, value deviation is contained according to the oxygen of reality, the operating power of blower fan is controlled to adjust by controller, increase or reduce the rotating speed of blower fan, the oxygen content after burning is made to reach original set value, i.e. Thorough combustion, when user regulates water temperature by controller, again control cooling-water temperature sensor by controller to detect and feedback target water temperature value, the switching value of gas ratio valve is again controlled to adjust by controller, adjustment flame size, simultaneously, controller controls the rear oxygen content after the combustion of lambda sensor detection combustion heat exchanger combustion chamber again, feedback according to lambda sensor contains oxygen value, again contrasted containing being worth with set original oxygen by controller, higher or on the low side, value deviation is contained according to the oxygen of reality, the operating power of blower fan is again controlled to adjust by controller, the oxygen content after burning is made to reach original set value, form the circulating combustion heating of closed loop.
The closed loop combustion heating control system of gas utensil, comprises controller 1 and combustion heat exchanger 2; Described controller 1 is electrically connected with lambda sensor 11, cooling-water temperature sensor 12, blower fan 13, gas ratio valve 14, ignition electrode 15 respectively; Described combustion heat exchanger 2 connects water inlet pipe 21 and outlet pipe 22, outlet pipe 22 is installed cooling-water temperature sensor 12; At the combustion chamber internal fixtion of described combustion heat exchanger 2, ignition electrode 15 is installed; Described combustion heat exchanger 2 is connected with blast pipe 23, air intake pipeline section is provided with blower fan 13 and is connected with gas inlet pipe 24, gas inlet pipe 24 being equipped with gas ratio valve 14; Described lambda sensor 11 is installed in the combustion chamber of combustion heat exchanger 2.
Further: described blower fan 13 is adjustable speed fan.
Further: described gas inlet pipe 24 can be arranged in front end or the rear end of blower fan.
Beneficial effect of the present invention is:
The mode that the present invention adopts closed loop to burn, oxygen value contained by exhaust emissions is detected by lambda sensor, after judging combustion gas and air mixed combustion containing the signal height of oxygen value, whether in the combustion of chemically correct fuel, lambda sensor by information feed back in controller, the ratio opened by rotating speed and the gas ratio valve of controller adjustment blower fan, control best combustion gas to mix with air mixture ratio (air-fuel ratio), make fuel gas buring fully, reduce carbon emission and discharged nitrous oxides, save the advantages such as combustion gas.
Accompanying drawing explanation
Fig. 1 is the structural representation of product of the present invention.
Detailed description of the invention
As shown in Figure 1: the closed loop combustion heating control method of gas utensil, comprises controller 1 and combustion heat exchanger 2, described controller 1 is electrically connected with lambda sensor 11, cooling-water temperature sensor 12, blower fan 13, gas ratio valve 14, ignition electrode 15 respectively, controller 1 is in holding state, when user wants water for heating, open outlet valve, current are passed through from combustion heat exchanger 2, user's start-up connector 1, lambda sensor 11, cooling-water temperature sensor 12, blower fan 12, the work of gas ratio valve 14 synchronous averaging, controller 1 controls ignition electrode 15 and lights a fire, combustion heat exchanger 2 is burnt, controller 1 control lambda sensor 11 detect combustion heat exchanger 2 combustion chamber combustion after rear oxygen content, feedback according to lambda sensor 11 contains oxygen value, contrasted containing being worth by controller 1 and set original oxygen, higher or on the low side, value deviation is contained (if oxygen is higher containing value according to the oxygen of reality, the operating power reducing blower fan 13 is controlled by controller 1, reduce the rotating speed of blower fan, if oxygen is on the low side containing value, the operating power improving blower fan 13 is controlled by controller 1, increase the rotating speed of blower fan), the oxygen content after burning is made to reach original set value, i.e. Thorough combustion, when user regulates water temperature by controller 1, again control cooling-water temperature sensor 12 by controller 1 to detect and feedback target water temperature value, the switching value of gas ratio valve 14 is again controlled to adjust (if heightened water temperature by controller 1, then controller 1 controls the increase switching value of gas ratio valve 14, if heightened water temperature low, then controller 1 controls the minimizing switching value of gas ratio valve 14), simultaneously, controller 1 again control lambda sensor 11 detect combustion heat exchanger 2 combustion chamber combustion after rear oxygen content, feedback according to lambda sensor 11 contains oxygen value, again contrasted containing being worth with set original oxygen by controller 1, higher or on the low side, value deviation is contained (if oxygen is higher containing value according to the oxygen of reality, the operating power reducing blower fan 13 is controlled by controller 1, reduce the rotating speed of blower fan, if oxygen is on the low side containing value, the operating power improving blower fan 13 is controlled by controller 1, increase the rotating speed of blower fan), the operating power of blower fan 13 is again controlled to adjust by controller 1, the oxygen content after burning is made to reach original set value, best Thorough combustion is formed after combustion gas is mixed with air, the circulating combustion heating of such formation closed loop.
As shown in Figure 1: the closed loop combustion heating control system of gas utensil, comprises controller 1 and combustion heat exchanger 2; Described controller 1 is electrically connected with lambda sensor 11, cooling-water temperature sensor 12, blower fan 13, gas ratio valve 14, ignition electrode 15 respectively; Described combustion heat exchanger 2 connects water inlet pipe 21 and outlet pipe 22, outlet pipe 22 is installed cooling-water temperature sensor 12; At the combustion chamber internal fixtion of described combustion heat exchanger 2, ignition electrode 15 is installed; Described combustion heat exchanger 2 is connected with blast pipe 23, air intake pipeline section is provided with blower fan 13 and is connected with gas inlet pipe 24, gas inlet pipe 24 being equipped with gas ratio valve 14; Described lambda sensor 11 is installed in the combustion chamber of combustion heat exchanger 2.
Further: described blower fan 13 is adjustable speed fan.
Further: described gas inlet pipe 24 can be arranged in front end or the rear end of blower fan.
The course of work:
When the system is operating, current enter from water inlet pipe 21, flowed out by outlet pipe 22, controller 1 controls ignition electrode 15 and lights a fire, also control lambda sensor 11 respectively simultaneously, cooling-water temperature sensor 12, blower fan 13, gas ratio valve 14 starts, lambda sensor 11 detects oxygen value contained by exhaust emissions, by whether judging containing the height of oxygen value signal after combustion gas and air mixed combustion in chemically correct fuel combustion, lambda sensor 11 by information feed back in controller 1, the rotating speed of blower fan 13 is adjusted by controller 1, by increasing or reduce rotating speed to the control of intake to determine that entered oxygen and burning reach optimal air-fuel ratio, make fuel gas buring abundant, minimum emissions, cooling-water temperature sensor 12 detects user and sets required temperature, the temperature whether reaching user's setting is detected by cooling-water temperature sensor 12, by judging that the height of water temperature feeds back in controller 1, control gas ratio valve 14 by controller 1 and open ratio value, control the size of flame, water temperature is reached for required water temperature.
Claims (3)
1. the closed loop combustion heating control method of gas utensil, is characterized in that: comprise controller and combustion heat exchanger, described controller is electrically connected with lambda sensor, cooling-water temperature sensor, blower fan, gas ratio valve, ignition electrode respectively, controller is in holding state, when user wants water for heating, open outlet valve, current are passed through from combustion heat exchanger, user's start-up connector, lambda sensor, cooling-water temperature sensor, blower fan, gas ratio valve synchronous averaging works, controller controls igniting pin mark fire, combustion heat exchanger is burnt, controller controls the rear oxygen content after the combustion of lambda sensor detection combustion heat exchanger combustion chamber, feedback according to lambda sensor contains oxygen value, contrasted containing being worth by controller and set original oxygen, higher or on the low side, value deviation is contained according to the oxygen of reality, the operating power of blower fan is controlled to adjust by controller, increase or reduce the rotating speed of blower fan, the oxygen content after burning is made to reach original set value, i.e. Thorough combustion, when user regulates water temperature by controller, again control cooling-water temperature sensor by controller to detect and feedback target water temperature value, the switching value of gas ratio valve is again controlled to adjust by controller, adjustment flame size, simultaneously, controller controls the rear oxygen content after the combustion of lambda sensor detection combustion heat exchanger combustion chamber again, feedback according to lambda sensor contains oxygen value, again contrasted containing being worth with set original oxygen by controller, higher or on the low side, value deviation is contained according to the oxygen of reality, the operating power of blower fan is again controlled to adjust by controller, the oxygen content after burning is made to reach original set value, form the circulating combustion heating of closed loop.
2. a closed loop combustion heating control system for gas utensil according to claim 1, comprises controller 1 and combustion heat exchanger 2; Described controller 1 is electrically connected with lambda sensor 11, cooling-water temperature sensor 12, blower fan 13, gas ratio valve 14, ignition electrode 15 respectively; Described combustion heat exchanger 2 connects water inlet pipe 21 and outlet pipe 22, outlet pipe 22 is installed cooling-water temperature sensor 12; At the combustion chamber internal fixtion of described combustion heat exchanger 2, ignition electrode 15 is installed; Described combustion heat exchanger 2 is connected with blast pipe 23, air intake pipeline section is provided with blower fan 13 and is connected with gas inlet pipe 24, gas inlet pipe 24 being equipped with gas ratio valve 14; Described lambda sensor 11 is installed in the combustion chamber of combustion heat exchanger 2.
3. the closed loop combustion heating control system of gas utensil according to claim 2, is characterized in that: described blower fan 13 is adjustable speed fan.
Further: described gas inlet pipe (24) can be arranged in front end or the rear end of blower fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510520854.7A CN105042862A (en) | 2015-08-22 | 2015-08-22 | Closed loop combustion heating control method and system for gas appliance |
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| CN201510520854.7A CN105042862A (en) | 2015-08-22 | 2015-08-22 | Closed loop combustion heating control method and system for gas appliance |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032138A1 (en) * | 2015-08-22 | 2017-03-02 | 黎素云 | Closed loop control system for combustion and heating of gas burner |
| CN106705047A (en) * | 2016-10-14 | 2017-05-24 | 吴芳福 | Premixed combustion control method and gas combustion system |
| WO2017210946A1 (en) * | 2016-06-08 | 2017-12-14 | 中山市卡洛力热能科技有限公司 | Novel fully pre-mixing gas-fired heating system and control method thereof |
| CN109612110A (en) * | 2018-11-12 | 2019-04-12 | 广东零壹电器科技有限公司 | Novel combustion system and gas water heater |
| CN110159575A (en) * | 2018-02-10 | 2019-08-23 | 芜湖美的厨卫电器制造有限公司 | Blower control method, device, water heater and the storage medium of gas heater |
| CN110207363A (en) * | 2018-12-10 | 2019-09-06 | 华帝股份有限公司 | Fully-premixed gas water heater and control method thereof |
| CN111578306A (en) * | 2020-05-13 | 2020-08-25 | 珠海格力电器股份有限公司 | Self-adaptive control method and device for wall-mounted gas boiler and wall-mounted gas boiler system |
| CN112146279A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of self-adaptive air source full-premix gas water heater and gas water heater thereof |
| CN112146278A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN114576646A (en) * | 2022-03-25 | 2022-06-03 | 珠海格力电器股份有限公司 | Gas equipment, gas equipment control method and device and computer equipment |
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| DE19757578A1 (en) * | 1997-03-28 | 1998-10-08 | Daewoo Electronics Co Ltd | Method for controlling air and gas proportions to a gas boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017032138A1 (en) * | 2015-08-22 | 2017-03-02 | 黎素云 | Closed loop control system for combustion and heating of gas burner |
| WO2017210946A1 (en) * | 2016-06-08 | 2017-12-14 | 中山市卡洛力热能科技有限公司 | Novel fully pre-mixing gas-fired heating system and control method thereof |
| CN106705047A (en) * | 2016-10-14 | 2017-05-24 | 吴芳福 | Premixed combustion control method and gas combustion system |
| CN110159575A (en) * | 2018-02-10 | 2019-08-23 | 芜湖美的厨卫电器制造有限公司 | Blower control method, device, water heater and the storage medium of gas heater |
| CN110159575B (en) * | 2018-02-10 | 2021-05-25 | 芜湖美的厨卫电器制造有限公司 | Fan control method and device for gas water heater, water heater and storage medium |
| CN109612110A (en) * | 2018-11-12 | 2019-04-12 | 广东零壹电器科技有限公司 | Novel combustion system and gas water heater |
| CN110207363A (en) * | 2018-12-10 | 2019-09-06 | 华帝股份有限公司 | Fully-premixed gas water heater and control method thereof |
| CN112146279A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of self-adaptive air source full-premix gas water heater and gas water heater thereof |
| CN112146278A (en) * | 2019-06-28 | 2020-12-29 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN112146278B (en) * | 2019-06-28 | 2022-09-09 | 华帝股份有限公司 | Control method of full-premix gas water heater and gas water heater |
| CN111578306A (en) * | 2020-05-13 | 2020-08-25 | 珠海格力电器股份有限公司 | Self-adaptive control method and device for wall-mounted gas boiler and wall-mounted gas boiler system |
| CN114576646A (en) * | 2022-03-25 | 2022-06-03 | 珠海格力电器股份有限公司 | Gas equipment, gas equipment control method and device and computer equipment |
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