CN101691930A - Output power control method of combustion apparatus - Google Patents
Output power control method of combustion apparatus Download PDFInfo
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- CN101691930A CN101691930A CN200910095069A CN200910095069A CN101691930A CN 101691930 A CN101691930 A CN 101691930A CN 200910095069 A CN200910095069 A CN 200910095069A CN 200910095069 A CN200910095069 A CN 200910095069A CN 101691930 A CN101691930 A CN 101691930A
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Abstract
The invention relates to an output power control method of a combustion apparatus for realizing continuous or segmental one key adjustment or automatic adjustment of the output power, meeting requirement of different heating loads when in operation and ensuring full and stable burning in the adjusting and heating process. By presetting combustion-supporting air amount and detecting combustion-supporting air flow rate, the fuel metering supplying is controlled according to the optimal air-fuel ratio requirement by utilizing the detecting result, fuel mixed combustion is provided accurately, and the fuel duty is changed along with the combustion-supporting air amount, and the output power of the combustion apparatus can be adjusted by only adjusting the combustion-supporting air amount, the operation is convenient, the combustion has high efficiency, the usage is safe and the operation is reliable.
Description
Technical field
The present invention relates to a kind of burner output power control method that is used to heat, a kind of by presetting and detect combustion-supporting air quantity, supply with fuel according to detected air capacity with appropriate air-fuel ratio then, realize that finally the burner power output can be continuous or sectional-regulated under clean-burning condition.
Background technology
At present, in many heating processes, to regulate to satisfy different requirements the power output of burner, for example the operator need adapt to steaming by the power output (firepower) of regulating burner, different culinary art operations such as boil, fries in shallow oil, fries, explodes, to obtain superior culinary art effect in the cooking operation; The constant-temperature hot water boiler need be higher than the power output (firepower) that reduces burner when temperature required in water temperature, and is lower than the temperature of power output (firepower) needing to keep that increases burner when temperature required in water temperature.
Because burning is the result of multifactor effect, power (firepower) need change some factors simultaneously when regulating could obtain good combustion efficiency.For satisfying the power adjusting needs, Chinese patent 02828738.X discloses a kind of control method of combustor and has controlled combustor automatically, proposed amount of fuel and air quantity, reached the purpose of regulating flame by the automatic output of adjusted in concert in proportion of the mode of control fuel supply device and air-supply arrangement motor speed separately.The defective that patent documentation 1 exists is: test shows, adopt control oil pump and blower fan rotating speed of motor separately, adjusted in concert is exported the mode of amount of fuel and air quantity in proportion, lagging behind oil mass in adjustment process apoplexy quantitative changeization changes, form actual wind oil ratio off-design value, consequently when the burner power output was changed from small to big, fuel delivery increases faster than air quantity supplied with increase, it is insufficient to burn, contaminated environment; In the burner power output from large to small the time, fuel delivery reduces to supply with faster than air quantity and reduces, and burning is in poor oil firing's situation, even causes from flame flame-out.Can not guarantee efficient burning when the control mode that relates to of patent documentation 1 concrete measures of environmental change (air pressure, temperature, voltage etc.) that do not afford redress in addition, wind oil ratio off-design value that changes in environmental conditions causes.Simultaneously there is following potential safety hazard in the method that proposes of patent documentation 1: air-supply arrangement break down and when out-of-blast fueller still can supply with fuel oil, cause the burner hearth trapped fuel too much, form detonation easily, jeopardize safety.
Chinese patent 200820057395.9 discloses a kind of premixed dual-segment fire energy-saving combustion engine, includes the big fire section and divides air cavity, big fire section gas inlet pipe, big fire section gas electromagnetic valve, big fire section combustion gas reset valve etc.; Little fire section gas nozzle, little fire section is divided air cavity, little fire section gas inlet pipe, little fire section gas electromagnetic valve, little fire section combustion gas reset valve, little fire section gas nozzle etc., by two blast tubes are set, and reach the purpose of regulating big fire and little fire in the technical scheme that each passage all is provided with reset valve.Realize that clean-burning condition is to allow the ratio of fuel and air reach stoichiometric air-fuel ratio (being called for short " air-fuel ratio "), " air-fuel ratio " is meant when fuel burns in air, the airborne oxygen of certain mass, just make the fuel completing combustion of certain mass, carbon all in the fuel, hydrogen are completely oxidized to carbon dioxide and water, and air and the quality of fuel of this moment are than " air-fuel ratio " that be called this fuel.The control mode that patent documentation 2 proposes does not comprise the measure control that realizes fuel and combustion air by environmental condition, can't also just can't realize the abundant burning in total power (firepower) adjustable range in whole firepower adjustable range inner control and adjusting " air-fuel ratio ".
In a word, do not exist in the prior art, supply with the output power control method of fuel according to " air-fuel ratio " by presetting and detect the combustion air mass flow.
Summary of the invention
The present invention is directed to the burner power adjusting and proposed new control method.
The present invention with the output quantity servo-actuated of fuel in detected combustion air flow of burner or MAF; The servo-actuated of described fuel output quantity is a kind of control method, it detects combustion-supporting air quantity according to burner, requirement according to best " air-fuel ratio " provides fuel to participate in burning by fuel supply system after metering, the formation fuel duty is followed combustion-supporting air quantity and is changed simultaneously, satisfies abundant, smooth combustion under best " air-fuel ratio " condition.
It is to realize by the combustion-supporting air quantity of regulating air-supply arrangement and providing that the present invention regulates the burner power output, can be continuous or sectional-regulated in the output power range of regulation, and one-key operation or finish automatically.Solid fuel of the present invention after fluidisation with combustion air mixed combustion, liquid fuel is through gasification or atomizing back and combustion air mixed combustion, the then direct and combustion air mixed combustion of fuel gas.
Principle of the present invention is: according to the needs of burner power output size, preset and detect the flow of combustion air, computer calculates fuel quantity according to best " air-fuel ratio " (so-called " optimal air-fuel ratio " is meant and adopted the excess air technology in actual applications), quantizes fuel supplying by PFM or pwm circuit control measuring pump to burner.After the solid fuel fluidisation with combustion air mixed combustion, liquid fuel gasification or atomizing back and combustion air mixed combustion, fuel gas then directly and combustion air mixed combustion.In the course of the work, the online detection combustion air flow of burner if combustion air flow increases, then calculates required fuel according to best " air-fuel ratio " and increases supply; Same principle, if combustion air flow reduces, then reducing required fuel supplies with, like this, when changing the flow of combustion air, burner detects the mass flow of combustion air automatically and according to the big or small quantity delivered of fuel metering automatically of detected flow, changes power output (firepower) with this, and in whole power (firepower) output area of burner, all can satisfy under stable and efficient burning reduces Air to greatest extent near the condition of best " air-fuel ratio ".
Owing to adopted fuel duty to follow the control mode of combustion-supporting air quantity, can in whole power (firepower) output area, regulate by a key, and to burn near best " air-fuel ratio "; Cause stopping air feed when air supply device breaks down, the detected air mass flow of burner stops the fuel supply automatically when being zero, lighting a fire or rekindling Shi Buhui generation detonation, guarantees safety, and is simple and reliable.
Further set forth content of the present invention below in conjunction with Figure of description and embodiment.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a kind of specific embodiment of the present invention.
Fig. 3 is the another kind of specific embodiment of the present invention.
The specific embodiment
Among Fig. 1, the present invention with the output quantity servo-actuated of fuel in detected combustion air flow of burner or MAF; The servo-actuated of described fuel output quantity is a kind of control method, it detects combustion-supporting air quantity according to burner, requirement according to best " air-fuel ratio " provides fuel to participate in burning by fuel supply system after metering, the formation fuel duty is followed combustion-supporting air quantity and is changed simultaneously, satisfies abundant, smooth combustion under best " air-fuel ratio " condition.It is to realize by the combustion-supporting air quantity of regulating air-supply arrangement and providing that the present invention regulates the burner power output, can be continuous or sectional-regulated in the output power range of regulation, and one-key operation or finish automatically.Solid fuel of the present invention after fluidisation with combustion air mixed combustion, liquid fuel is through gasification or atomizing back and combustion air mixed combustion, the then direct and combustion air mixed combustion of fuel gas.
Below be specific embodiments of the invention.Label among Fig. 2, Fig. 3 is:
The 1-flame detector; Driving mechanism is regulated in the 2-air-supply; The 3-air door; The 4-centrifugal wind wheel; 5,17-air mass flow checkout gear; The 6-motor; The 7-igniter; 8,15-fuel metering feedway; The 9-fuel-intake connection; The 10-premixer; The 11-fuel pipe; The 12-fuel evaporator; The 13-disc; The 14-combustion chamber; But 16-electronics air register; The 18-centrifugal blower; The 19-fuel pipe; The 20-ajutage; The 21-atomizer; The 22-stable flame pan; The 23-combustion chamber.
Among Fig. 2, a kind of automatic pre-mixing type combustion apapratus, centrifugal wind wheel 4 produce pressure under the driving of motor 6 makes air air mass flow checkout gear 5 back of flowing through send into premixer 10 by air door 3; Air door 3 is regulated driving mechanism 2 by air-supply and is driven, and changes air mass flow according to the power output needs; Air mass flow checkout gear 5 detects the variation of air mass flow, calculate required fuel quantity according to best " air-fuel ratio ", the fuel of suitable quality is provided to combustor by the adjusting of fuel metering feedway 8, after evaporimeter 12 gasifications,, reach the purpose that power output (firepower) is regulated with air mixed combustion.
Fig. 3 is an another kind of specific embodiment of the present invention.A kind of automatic pressure atomising burner, centrifugal blower 18 air-supplies according to the power output needs, but are regulated the combustion air that produces certain flow by electronics air register 16, send to combustion chamber 23 through air mass flow checkout gear 17 and ajutage 20; After air mass flow checkout gear 17 detects the flow of combustion air, calculate required fuel quantity according to best " air-fuel ratio ", the fuel oil that control fuel metering feedway 15 is sent here through fuel pipe 19, by atomizer 21 atomizing backs and air 23 mixed combustions, reach the purpose that power output (firepower) is regulated in the combustion chamber.
More than be the description of this invention, and unrestricted, based on other embodiments of content of the present invention, also within protection scope of the present invention.
Claims (3)
1. the output power control method of a burner may further comprise the steps:
Air-supply arrangement by adjustable air quantity provides the combustion air auxiliary combustion;
Fuel supply system by measurable fuel quantity provides fuel combustion;
It is characterized in that: with the output quantity servo-actuated of fuel in detected combustion air flow of burner or MAF;
The servo-actuated of described fuel output quantity is a kind of control method, it detects combustion-supporting air quantity according to burner, requirement according to best " air-fuel ratio " provides fuel to participate in burning by fuel supply system after metering, the formation fuel duty is followed combustion-supporting air quantity and is changed simultaneously, satisfies abundant, smooth combustion under best " air-fuel ratio " condition.
2. the output power control method of a kind of burner as claimed in claim 1, it is characterized in that: regulating the burner power output is by regulating the combustion-supporting air quantity realization that air-supply arrangement provides, can be continuous or sectional-regulated in the output power range of regulation, one-key operation or finish automatically.
3. the output power control method of a kind of burner as claimed in claim 1, it is characterized in that: solid fuel after fluidisation with combustion air mixed combustion, liquid fuel is through gasification or atomizing back and combustion air mixed combustion, the then direct and combustion air mixed combustion of fuel gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095069A CN101691930A (en) | 2009-10-20 | 2009-10-20 | Output power control method of combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095069A CN101691930A (en) | 2009-10-20 | 2009-10-20 | Output power control method of combustion apparatus |
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| CN101691930A true CN101691930A (en) | 2010-04-07 |
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| CN200910095069A Pending CN101691930A (en) | 2009-10-20 | 2009-10-20 | Output power control method of combustion apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949549A (en) * | 2010-10-18 | 2011-01-19 | 攀钢集团钢铁钒钛股份有限公司 | Flow control method of combustion system |
| CN102353072A (en) * | 2011-10-24 | 2012-02-15 | 云南航天工业总公司 | Method for controlling output power of diesel combustor and device thereof |
| CN104534503A (en) * | 2014-12-23 | 2015-04-22 | 云南航天工业有限公司 | Automatic altitude and temperature correcting control method for diesel combustor |
| CN104654346A (en) * | 2014-12-23 | 2015-05-27 | 云南航天工业有限公司 | Effective fuel oil burner applied to plateau and plain |
| CN108320643A (en) * | 2018-02-06 | 2018-07-24 | 郑力豪 | Metal oxygen combustion experiment instrument |
| CN110306017A (en) * | 2019-07-17 | 2019-10-08 | 首钢京唐钢铁联合有限责任公司 | A kind of annealing furnace proportional control type burner air/fuel ratio control method and system |
-
2009
- 2009-10-20 CN CN200910095069A patent/CN101691930A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949549A (en) * | 2010-10-18 | 2011-01-19 | 攀钢集团钢铁钒钛股份有限公司 | Flow control method of combustion system |
| CN102353072A (en) * | 2011-10-24 | 2012-02-15 | 云南航天工业总公司 | Method for controlling output power of diesel combustor and device thereof |
| CN102353072B (en) * | 2011-10-24 | 2013-08-21 | 云南航天工业总公司 | Method for controlling output power of diesel combustor and device thereof |
| CN104534503A (en) * | 2014-12-23 | 2015-04-22 | 云南航天工业有限公司 | Automatic altitude and temperature correcting control method for diesel combustor |
| CN104654346A (en) * | 2014-12-23 | 2015-05-27 | 云南航天工业有限公司 | Effective fuel oil burner applied to plateau and plain |
| CN108320643A (en) * | 2018-02-06 | 2018-07-24 | 郑力豪 | Metal oxygen combustion experiment instrument |
| CN110306017A (en) * | 2019-07-17 | 2019-10-08 | 首钢京唐钢铁联合有限责任公司 | A kind of annealing furnace proportional control type burner air/fuel ratio control method and system |
| CN110306017B (en) * | 2019-07-17 | 2021-04-23 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace proportion control type burner air-fuel ratio control method and system |
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Open date: 20100407 |