CN102767842A - Method and device for controlling burning efficiency - Google Patents
Method and device for controlling burning efficiency Download PDFInfo
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- CN102767842A CN102767842A CN2012100689142A CN201210068914A CN102767842A CN 102767842 A CN102767842 A CN 102767842A CN 2012100689142 A CN2012100689142 A CN 2012100689142A CN 201210068914 A CN201210068914 A CN 201210068914A CN 102767842 A CN102767842 A CN 102767842A
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Abstract
The invention discloses a method and a device for controlling burning efficiency. The method and the device for controlling burning efficiency belong to the field of burning equipment and are designed for solving the problem that effective controlling of burning efficiency cannot be realized in the prior art. The method for controlling burning efficiency includes detecting concentration of gas to be tested at an exhaust port; judging whether the concentration exceeds the preset concentration value or not; improving rotation speed of a fan if the concentration exceeds the preset concentration value; keeping the fan working normally at the constant rotation speed if the concentration is within the preset concentration value; judging whether the rotation speed exceeds the preset maximum rotation speed or not; keeping the fan rotating at the current speed and switching off a main valve, a sectional valve and a proportional valve for inputting combustible gas if the rotation speed exceeds the preset maximum rotation speed; and detecting the concentration of the gas to be tested at the exhaust portion if the rotation speed is within the preset maximum rotation speed.
Description
Technical field
The present invention relates to the combustion apparatus field, relate in particular to a kind of control method and device of efficiency of combustion.
Background technology
The electric equipment products that heat through burning combustible gas have become in the life at home indispensable; Water heater etc. for example; And because need fuel gas be burnt; And this fuel gas possibly have toxicity, and the person and property safety have been caused certain threat, so how to guarantee the emphasis that higher security performance is studied for producer always.
In the prior art, be example with the water heater, the feeding fuel gas that can continue also burns, thereby the water that feeds in the water heater is heated confession user use.When the user uses, because of fuel gas continues to feed water heater, the situation out of proportion of fuel gas and combustion-supporting gas can appear, and promptly the combustible gas body feeds excessive and combustion-supporting gas feeding deficiency.At this moment, in the process of burning combustible gas, fuel gas and combustion-supporting gas consume together; But because the deficiency of combustion-supporting gas; Efficiency of combustion and the fuel gas that can reduce fuel gas can't clean-burning problems, and remaining fuel gas is directly discharged water heater, and it is indoor to enter the user; Thereby reduced the security that water heater uses, harm user's the person and property safety.
Summary of the invention
Embodiments of the invention provide a kind of control method and device of efficiency of combustion.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of control method of efficiency of combustion comprises:
Detect the concentration of the tested gas of exhaust ports;
Judge whether said concentration exceeds the concentration preset value that sets;
If said concentration exceeds the concentration preset value that sets, then improve the rotating speed of blower fan,
If said concentration does not exceed the preset value that sets, then keep blower fan with current rotating speed operate as normal;
Judge whether said rotating speed exceeds the maximum (top) speed that sets;
If said rotating speed exceeds the maximum (top) speed that sets, then keep said blower fan to rotate with current rotating speed, close the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and report to the police,
If said rotating speed does not exceed the maximum (top) speed that sets, then detect the concentration of the tested gas of exhaust ports.
A kind of control device of efficiency of combustion comprises
Control module is connected with gas detection cell, blower fan and alarm unit respectively; Said gas detection cell is arranged at exhaust ports; Said blower fan is arranged at air inlet;
Said gas detection cell is used to detect the concentration of the tested gas of exhaust ports;
Said alarm unit is used to report to the police;
Said control module also comprises:
The blower fan control module is used to control the duty of blower fan;
First judge module; Be used to judge whether said concentration exceeds the concentration preset value that sets; If said concentration exceeds the concentration preset value that sets then improves said rotation speed of fan through the blower fan control module; If said first judge module is judged said concentration and do not exceeded the concentration preset value that sets, then keep said blower fan with current rotating speed operate as normal through the blower fan control module;
Second judge module; Be used to judge whether said rotating speed exceeds the maximum (top) speed that sets; Close main valve, sectioning valve and proportioning valve if said second judge module judges that said rotating speed exceeds the maximum (top) speed that sets through the valve control module and report to the police, detect the concentration of the tested gas of said exhaust ports if said second judge module judges that said rotating speed does not exceed the maximum (top) speed that sets through gas detection cell through alarm unit;
The valve control module is used to control the break-make of the main valve, sectioning valve and the said proportioning valve that feed fuel gas.
The control method of a kind of efficiency of combustion that the embodiment of the invention provides and device; Concentration through to the tested gas of exhaust ports detects; Rotating speed according to the blower fan of this concentration adjustment air inlet is blown into more combustion-supporting gas, thereby improves the efficiency of combustion of fuel gas; The security of the electric equipment products that guaranteed to heat through burning combustible gas has been avoided fuel gas fully to burn and has been entered the indoor loss that user's the person and property are caused of user.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of water heater described in the embodiment of the invention;
Fig. 2 is the flow chart of the control method of one of the embodiment of the invention described efficiency of combustion;
Fig. 3 is the graph of a relation of tested gas concentration and rotation speed of fan in the embodiment of the invention;
Fig. 4 is the flow chart of the control method of the described efficiency of combustion of another embodiment of the present invention;
Fig. 5 is the structural representation of the control device of one of the embodiment of the invention described efficiency of combustion;
Fig. 6 is the structural representation of the control device of the described efficiency of combustion of another embodiment of the present invention.
The specific embodiment
Be described in detail below in conjunction with the control method and the device of accompanying drawing a kind of efficiency of combustion of the embodiment of the invention.
Should be clear and definite, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
For making description clearer, be that example is described with the water heater that water is heated through burning combustible gas.As shown in Figure 1, when the user uses water heater 1, open the switch (not shown) of water heater, the temperature of water outlet when using is set; The valve 2 that is arranged on the Gas Pipe 3 is opened; Begin in water heater 1, to feed fuel gas; The main component of the fuel gas that existing water heater uses can be gases such as carbon monoxide and methane, and this sentences carbon monoxide is that example is described, and valve 2 comprises main valve, sectioning valve and proportioning valve; Be arranged at blower fan 5 rotations at water heater 1 air inlet 4 places, in water heater 1, be blown into combustion-supporting gas, this combustion-supporting gas is generally air; In combustion chamber 6, mix and burn as the air of combustion-supporting gas with as the carbon monoxide of fuel gas, thereby the water in the water tank 7 are heated through the heat exchanger (not shown); Gas after the burning is discharged water heater 1 from exhaust outlet 8.
A kind of control method of efficiency of combustion, as shown in Figure 2, comprising:
200, detect the concentration of the tested gas of exhaust ports.
The gas sensor 9 that is arranged at exhaust outlet 8 places detects the concentration of tested gas in the gas after the burning at exhaust outlets 8 places; Wherein tested gas can be carbon monoxide, methane, oxygen or the concentration of carbon dioxide in the back gas that burns; For making description clearer, describe as tested gas with carbon monoxide.In national standard; The concentration of carbon monoxide can not surpass 600 PPMs (Parts Per Million in the gas after burning; Hereinafter to be referred as ppm), and in the use of reality, the concentration of carbon monoxide is remained between the 300ppm to 500ppm; At this, the concentration of detection fuel gas that can be real-time.
201, judge whether said concentration exceeds the concentration preset value that sets.
According in the water heater 1 the concentration preset value that is provided with in advance judge that this concentration preset value is obtained through experiment repeatedly, the curve of concentration preset value obtains in such a way:
The aperture of regulation proportioning valve, and keep the aperture of proportioning valve constant, the maximum controlling current that wherein maximum opening of proportioning valve is corresponding is 200 milliamperes, the corresponding minimum control electric current of minimum aperture is 40 milliamperes; Being 200 milliamperes with setting control electric current is that example is described, and under the proportioning valve aperture of 200 milliamperes of correspondences, feeds carbon monoxide; Start blower fan 5 and in water heater 1, feed combustion-supporting gas, and with fuel gas mixed combustion; Through the concentration of gas sensor 9 detection exhaust outlets 8 place's carbon monoxide, the concentration that for example detects is that 550ppm has exceeded desirable scope, improves the rotating speed of blower fan 5 through the power that increases blower fan 5; Because of having promoted the rotating speed of blower fan 5, the concentration of carbon monoxide descends; When the concentration of tested gas becomes 500ppm, the rotating speed of record blower fan 5 under the situation of this aperture, and as first rotating speed; Continue to improve the rotating speed of blower fan 5, make the concentration of carbon monoxide drop to 300ppm, the rotating speed of record blower fan 5 is as second rotating speed; Through repeatedly experiment, the control electric current of confirming proportioning valve is 200 MAHs, the concentration relationship of the rotating speed of blower fan 5 and exhaust outlet 8 place's carbon monoxide between the minimum speed of blower fan 5 and maximum speed.
In step 201, when judging whether said concentration exceeds the concentration preset value that sets, if said concentration exceeds the concentration preset value that sets, then
202, improve the rotating speed of blower fan.
Water heater 1 obtains the rotating speed of blower fan 5, and the said rotating speed that obtains blower fan 5 can be specially: obtain and the corresponding blower fan exponent number of the rotating speed of said blower fan 5 the equally spaced setting between the peak power of blower fan 5 and minimum power of wherein said blower fan exponent number.
Said blower fan exponent number can be provided with in such a way; For example; The peak power of blower fan 5 is that the rotating speed of 35 watts and corresponding blower fan 5 is 4000 rpms (revolutions per minute is hereinafter to be referred as rpm), and minimum power is that the rotating speed of 15 watts and corresponding blower fan 5 is 2000rpm; Blower fan exponent number between peak power and minimum power is 254, then can draw and be spaced apart 0.08 watt; The adjustment of said power can realize through the mode of adjustment curtage; For example, under the situation of water heater 1 operate as normal, the blower fan exponent number that obtains blower fan 5 is 127.
The user sets the running power of water heater 1 when using water heater 1, promptly set the aperture of corresponding proportioning valve; For example to aperture that should proportioning valve; The control electric current of proportioning valve is 100 milliamperes, and under this aperture, the rotating speed of blower fan 5 and the concentration relationship of carbon monoxide are as shown in Figure 3; Wherein A line and B line are the concentration preset value of carbon monoxide, and the C line is the variation relation of carbonomonoxide concentration and rotation speed of fan.In use; When the concentration of detected carbon monoxide is the pairing concentration of D point; The concentration that can find out carbon monoxide has exceeded the concentration preset value; This moment, the combustion power of water heater 1 interior fuel gas reduced, and can't fully burn, and this moment can't be clean-burning former because the combustion-supporting gas concentration in the water heater 1 is lower; The detection of wherein said carbonomonoxide concentration and judge whether concentration exceeds the concentration preset value can real-time carrying out.
When the concentration of the carbon monoxide of knowing exhaust outlet 8 places has exceeded the concentration preset value; The rotating speed that improves blower fan improves the amount of the air that is blown into water heater 1; Contain combustion-supporting gas in the air, therefore improved the concentration of combustion-supporting gas in the water heater 1, and then improved the efficiency of combustion of carbon monoxide.
The rotating speed of the said blower fan of said raising can be specially:
Through the interval blower fan exponent number that is provided with in advance, for example 10, improve the blower fan exponent number of blower fan 5; At this moment, improve the amount that blower fan 5 is blown into air, improved the concentration of combustion-supporting gas in the gas in water heater 1, thus make gas in water heater 1 with better mixed, improve the efficiency of combustion of fuel gas.
In above-mentioned situation; When the concentration of carbon monoxide exceeds the preset concentration value; The aperture of proportioning valve remains unchanged, and the speed of the fuel gas that then in water heater 1, feeds is constant, at this moment; Can there be the lower situation of regulating the speed of efficiency of combustion in the amount of being blown into that only increases air through blower fan 5, thereby has increased the unsafe factor when water heater 1 uses; For further improving the speed of adjustment efficiency of combustion, also comprise:
Obtain the aperture of proportioning valve.
Rotating speed at the said blower fan of said raising also comprises:
205, reduce the aperture of said proportioning valve.
Water heater 1 obtains the aperture of proportioning valve in the valve 2, and said valve 2 also comprises sectioning valve and main valve.
After the concentration of carbon monoxide exceeded the concentration preset value, the rotating speed that improves blower fan 5 to be to be blown into more combustion-supporting gas, at this moment, because of being blown into more combustion-supporting gas, remedied in the water heater 1 excessive the and lower problem of efficiency of combustion that cause of carbonomonoxide concentration; Reduce the aperture of said proportioning valve this moment, reduce the feeding amount of the carbon monoxide in the water heater 1, reduced the concentration of carbon monoxide in the water heater 1, thereby acted in the lump, improved the speed of water heater 1 adjustment efficiency of combustion with the more combustion-supporting gas that is blown into.
Wherein, the said aperture of obtaining proportioning valve can be specially:
Water heater 1 obtains the proportioning valve exponent number of proportioning valve; This proportioning valve exponent number can be provided with in such a way; For example; The maximum controlling current of proportioning valve is the maximum opening of 200 milliamperes and corresponding proportioning valve; Minimum control electric current is the minimum aperture of 40 milliamperes and corresponding proportioning valve, and the proportioning valve exponent number between maximum controlling current and minimum control electric current is 254, and then can draw current intervals is 0.63 milliampere; For example, under the situation of water heater 1 operate as normal, the proportioning valve exponent number of the proportioning valve that obtains is 127, with this proportioning valve exponent number as original scale valve exponent number.
The user is through setting needed leaving water temperature, the indirect power that water heater 1 is set, and then also resize ratio valve exponent number with the programming rate of water in the adjustment water heater 1.
The aperture of the said proportioning valve of said reduction can be specially:
Because of the concentration of knowing carbon monoxide has exceeded the concentration preset value; Improve the rotating speed of blower fan 5 on the one hand; On the other hand according to the space ratio valve exponent number that is provided with in advance, for example 10, reduce the proportioning valve exponent number; Because of reducing the control electric current that the proportioning valve exponent number can the resize ratio valve, then further reduced the aperture of proportioning valve; At this moment; The combustible gas scale of construction that feeds water heater 1 reduces; The combustible gas scale of construction in water heater 1 in the mist also can reduce; Increase the combustion-supporting gas that is blown in the water heater 1 in addition, improved the efficiency of combustion of fuel gas more quickly, thereby further optimized the speed of the efficiency of combustion adjustment of fuel gas in the water heater 1.
203, judge whether said rotating speed exceeds the maximum (top) speed that sets.
Water heater 1 detects through the gas sensor 9 real-time concentration to carbon monoxide; At this moment; In case when the concentration of carbon monoxide occurring and exceeding the concentration preset value, then improve the rotating speed of primary air fan 5, and continue to obtain the concentration of the rotating speed and the carbon monoxide of adjusted blower fan 5.When still can't making the concentration of carbon monoxide, the rotating speed that repeatedly improves blower fan 5 returns to the concentration preset value; The rotating speed of blower fan 5 can exceed default maximum rotation speed of fan, can learn that the concentration that rotating speed that timely continuation promotes blower fan 5 also can't carbon monoxide recovers the concentration preset value.
In step 203, when judging whether said rotating speed exceeds the maximum (top) speed that sets, if said rotating speed exceeds the maximum (top) speed that sets, then
204, said blower fan rotates with current rotating speed, closes the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and reports to the police.
At this moment; Water heater 1 is closed main valve, sectioning valve and the said proportioning valve that feeds carbon monoxide; And report to the police, blower fan 5 keeps current rotating speed to continue rotation, in water heater 1, is blown into a large amount of air; Reduce the concentration of carbon monoxide, meet standard with the concentration of carbon monoxide in the gas that guarantees to discharge water heater 1; Wherein report to the police and to report to the police to the user through the buzzer and the light that are arranged on the water heater 1, thereby notify the user to need the staff that water heater 1 is overhauled.
In step 203, when judging whether said rotating speed exceeds the maximum (top) speed that sets; If said rotating speed does not exceed the maximum (top) speed that sets; Then repeat step 202, improving the rotating speed of blower fan 5 one by one, the maximum (top) speed or the carbonomonoxide concentration that exceed blower fan 5 until the rotating speed of blower fan 5 return to the concentration preset value.
When judging whether said concentration exceeds the concentration preset value that sets, if said concentration does not exceed the concentration preset value that sets, then
206, keep blower fan with current rotating speed operate as normal.
Because of the concentration of detected carbon monoxide returns to the concentration preset value; Can confirm that then the concentration of the carbon monoxide in the water heater 1 and the concentration of combustion-supporting gas have reached balance preferably; Thereby keep higher efficiency of combustion, at this moment, keep rotating of blower fan with present speed; Continuation is blown into combustion-supporting gas in water heater 1, the operate as normal of maintaining heat hydrophone 1.
When gas sensor 9 carries out the detection of carbon monoxide; When making concentration remain in the concentration preset value through the rotating speed that improves blower fan 5, the rotating speed of blower fan 5 has exceeded through the measured rotation speed of fan of test of many times, the work that under this rotation speed of fan, continues; Blower fan 5 is blown into a large amount of combustion-supporting gases; The concentration that combustion-supporting gas in the water heater 1 can occur is too much, thereby makes carbon monoxide and combustion-supporting gas unbalance once more, has reduced the efficiency of combustion of water heater 1; And failing clean-burning carbon monoxide increases, and makes the carbon monoxide at exhaust outlet 8 places exceed the concentration preset value once more, the danger that causes water heater 1 to use, so further, said maintenance blower fan is with before the current rotating speed operate as normal, and is as shown in Figure 4, also comprises:
207, reduce the rotating speed of said blower fan.
The concentration that detects fuel gas through gas sensor 9 returns to the preset concentration value, shown in the E point as shown in Figure 3, then reduces the rotating speed of blower fan 5; When reducing the rotating speed of blower fan 5, equally can be according to blower fan exponent number and interval blower fan exponent number, reduction blower fan exponent number progressively, thereby the rotating speed of reduction blower fan 5.
208, judge that whether said rotating speed is less than the minimum speed that sets.
Rotating speed to blower fan 5 is judged; If the rotating speed of blower fan 5 is less than the minimum speed that sets; Then keep said blower fan to rotate, close the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and report to the police with current rotating speed; Thereby reduce to use the risk of water heater 1, avoid that the carbon monoxide that concentration is higher continues to be discharged into the user indoor.Wherein, this minimum speed can be set by relevant staff, the rotating speed of blower fan 5 in the time of also can once arriving the concentration preset value through the density control of water heater 1 record carbon monoxide.
In step 208, judge that said rotating speed is whether during less than the minimum speed that sets, if said rotating speed is not less than the minimum speed that sets, then
209, judge whether said concentration exceeds said concentration preset value once more.
If exceeding said concentration preset value once more, said concentration do not keep blower fan with current rotating speed operate as normal, when the rotating speed of blower fan 5 does not reach minimum speed, and the concentration of the detection exhaust outlet 8 place's carbon monoxide that then repeat once more; Rotating speed at blower fan 5 continues in the process of reduction, if the concentration of carbon monoxide returns to the concentration preset value once more, can know that then blower fan 5 has reached reasonably working speed, and then keep current rotating speed this moment, makes water heater 1 operate as normal.
In step 209, when judging whether said concentration exceeds said concentration preset value once more, if said concentration exceeds said concentration preset value once more, then
207, reduce the rotating speed of said blower fan.
When the concentration of confirming carbon monoxide still exceeded the concentration preset value, the execution in step 207-step 209 that then circulates was so that the concentration of the carbon monoxide in the water heater 1 returns to the rotating speed of concentration preset value or blower fan 5 less than minimum speed.
In step 209, when judging whether said concentration exceeds said concentration preset value once more, if said concentration does not exceed said concentration preset value once more, then
206, keep blower fan with current rotating speed operate as normal.
The maintenance of reminding user's water heater 1 to need the staff to be correlated with during less than minimum speed at the rotating speed of blower fan 5.
In step 208, judge that said rotating speed is whether during less than the minimum speed that sets, if said rotating speed is less than the minimum speed that sets, then
204, keep said blower fan to rotate, close the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and report to the police with current rotating speed.
For the synchronism that the adjustment and the blower fan of further optimized proportion valve are adjusted, preferred, said blower fan exponent number is corresponding one by one with said proportioning valve exponent number, and said interval blower fan exponent number and said space ratio valve exponent number correspondence.
In the process of blower fan exponent number and the adjustment of proportioning valve exponent number; If blower fan exponent number that is provided with and proportioning valve exponent number and interval blower fan exponent number and space ratio valve exponent number are not corresponding; The excessive problem of variation that efficiency of combustion then possibly occur; Thereby make the variation of water temperature too obvious, reduced the comfortableness that the user uses water heater.
The correspondence of passing ratio valve exponent number and blower fan exponent number, when improving the blower fan exponent number, exponent number that can corresponding reduction proportioning valve, thus guarantee the more stable adjustment of efficiency of combustion in the water heater 1.
Corresponding with the control method of above-mentioned a kind of efficiency of combustion, the present invention also provides a kind of control device of efficiency of combustion, like Fig. 1 and shown in Figure 5, comprising:
Control module is connected with alarm unit with gas detection cell, blower fan 5 respectively; Said gas detection cell is arranged at exhaust outlet 8 places; Said blower fan is arranged at air inlet;
Said gas detection cell is used to detect the concentration of the tested gas of exhaust ports, and said gas detection cell can be the above-mentioned gas sensor 9 that is arranged at exhaust outlet 8 places;
Said alarm unit is used to report to the police, and said alarm unit can be alarm lamp or buzzer etc.;
Said control module, as shown in Figure 6, also comprise:
The blower fan control module is used to control the duty of blower fan;
First judge module is used to judge whether said concentration exceeds the concentration preset value that sets, if said concentration exceeds the concentration preset value that sets then improves said rotation speed of fan through the blower fan control module;
Second judge module; Be used to judge whether said rotating speed exceeds the maximum (top) speed that sets; Close main valve, sectioning valve and proportioning valve if said second judge module judges that said rotating speed exceeds the maximum (top) speed that sets through the valve control module and report to the police, detect the concentration of the tested gas of said exhaust ports if said second judge module judges that said rotating speed does not exceed the maximum (top) speed that sets through gas detection cell through alarm unit;
The valve control module is used to control the break-make of the main valve, sectioning valve and the said proportioning valve that feed fuel gas.
Said valve control module also is used to control the aperture of said proportioning valve.
Said first judge module also is used for:
If said first judge module judges that said concentration does not exceed the preset value that sets, then keep said blower fan with current rotating speed operate as normal through the blower fan control module.
Said control module also comprises:
The 3rd judge module; Be used to judge that whether said rotating speed is less than the minimum speed that sets; If said rotating speed is less than the minimum speed that sets then report to the police through alarm unit, if said rotating speed is not less than the minimum speed that sets then judges through the 4th judge module whether said concentration exceeds said concentration preset value once more;
Keep blower fan with current rotating speed operate as normal if said the 4th judge module judges that said concentration exceeds said concentration preset value once more through the blower fan control module, reduce the rotating speed of said blower fan if said the 4th judge module judges that said concentration does not exceed said concentration preset value once more through said blower fan control module.
Said tested gas is fuel gas, combustion-supporting gas or generates gas.
Wherein, said first acquiring unit obtains the rotating speed of blower fan 5, can be specially: obtain and the corresponding blower fan exponent number of the rotating speed of said blower fan 5 the equally spaced setting between the peak power of blower fan 5 and minimum power of wherein said blower fan exponent number.
Said blower fan exponent number can be provided with in such a way; For example; The peak power of blower fan 5 is that the rotating speed of 35 watts and corresponding blower fan 5 is 4000 rpms (revolutions per minute is hereinafter to be referred as rpm), and minimum power is that the rotating speed of 15 watts and corresponding blower fan 5 is 2000rpm; Blower fan exponent number between maximum voltage and minimum power is 254, then can draw and be spaced apart 0.08 watt; The adjustment of said power can realize through the mode of curtage of adjustment blower fan 5.
Said second acquisition unit obtains the proportioning valve aperture, can be specially:
Water heater 1 obtains the proportioning valve exponent number of proportioning valve; This proportioning valve exponent number can be provided with in such a way; For example; The maximum controlling current of proportioning valve is the maximum opening of 200 milliamperes and corresponding proportioning valve; Minimum control electric current is the minimum aperture of 40 milliamperes and corresponding proportioning valve, and the proportioning valve exponent number between maximum controlling current and minimum control electric current is 254, and then can draw current intervals is 0.63 milliampere.
For the synchronism that the adjustment and the blower fan of further optimized proportion valve are adjusted, preferred, said blower fan exponent number is corresponding one by one with said proportioning valve exponent number, and said interval blower fan exponent number and said space ratio valve exponent number correspondence.
In the process of blower fan exponent number and the adjustment of proportioning valve exponent number; If blower fan exponent number that is provided with and proportioning valve exponent number and interval blower fan exponent number and space ratio valve exponent number are not corresponding; The excessive problem of variation that efficiency of combustion then possibly occur; Thereby make the variation of water temperature too obvious, reduced the comfortableness that the user uses water heater.
The correspondence of passing ratio valve exponent number and blower fan exponent number, when improving the blower fan exponent number, exponent number that can corresponding reduction proportioning valve, thus guarantee the more stable adjustment of efficiency of combustion in the water heater 1.
The control method of a kind of efficiency of combustion that the embodiment of the invention provides and device; Concentration through to the tested gas of exhaust ports detects; Rotating speed according to the blower fan of this concentration adjustment air inlet is blown into more combustion-supporting gas, thereby improves the efficiency of combustion of fuel gas; The security of the electric equipment products that guaranteed to heat through burning combustible gas has been avoided fuel gas fully to burn and has been entered the indoor loss that user's the person and property are caused of user.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection domain with claim.
Claims (9)
1. the control method of an efficiency of combustion is characterized in that, comprising:
Detect the concentration of the tested gas of exhaust ports;
Judge whether said concentration exceeds the concentration preset value that sets;
If said concentration exceeds the concentration preset value that sets, then improve the rotating speed of blower fan,
If said concentration does not exceed the preset value that sets, then keep blower fan with current rotating speed operate as normal;
Judge whether said rotating speed exceeds the maximum (top) speed that sets;
If said rotating speed exceeds the maximum (top) speed that sets, then keep said blower fan to rotate with current rotating speed, close the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and report to the police,
If said rotating speed does not exceed the maximum (top) speed that sets, then detect the concentration of the tested gas of exhaust ports.
2. method according to claim 1 is characterized in that, if said concentration exceeds after the concentration preset value that sets, also comprises the aperture that reduces said proportioning valve.
3. method according to claim 2 is characterized in that, said maintenance blower fan also comprises with before the current rotating speed operate as normal:
Reduce the rotating speed of said blower fan;
Judge that whether said rotating speed is less than the minimum speed that sets;
If said rotating speed less than the minimum speed that sets, then keeps said blower fan to rotate with current rotating speed, close the main valve, sectioning valve and the said proportioning valve that feed fuel gas, and report to the police,
If said rotating speed is not less than the minimum speed that sets, judge then whether said concentration exceeds said concentration preset value once more;
If exceeding said concentration preset value once more, said concentration do not keep blower fan with current rotating speed operate as normal.
4. method according to claim 3 is characterized in that, said maintenance blower fan also comprises with current rotating speed operate as normal:
If said concentration exceeds said concentration preset value once more, then reduce the rotating speed of said blower fan.
5. according to the arbitrary described method of claim 1-4, it is characterized in that said tested gas is fuel gas, combustion-supporting gas or generates gas.
6. the control device of an efficiency of combustion is characterized in that, comprising:
Control module is connected with gas detection cell, blower fan and alarm unit respectively; Said gas detection cell is arranged at exhaust ports; Said blower fan is arranged at air inlet;
Said gas detection cell is used to detect the concentration of the tested gas of exhaust ports;
Said alarm unit is used to report to the police;
Said control module also comprises:
The blower fan control module is used to control the duty of blower fan;
First judge module; Be used to judge whether said concentration exceeds the concentration preset value that sets; If said concentration exceeds the concentration preset value that sets then improves said rotation speed of fan through the blower fan control module; If said first judge module is judged said concentration and do not exceeded the concentration preset value that sets, then keep said blower fan with current rotating speed operate as normal through the blower fan control module;
Second judge module; Be used to judge whether said rotating speed exceeds the maximum (top) speed that sets; Close main valve, sectioning valve and proportioning valve if said second judge module judges that said rotating speed exceeds the maximum (top) speed that sets through the valve control module and report to the police, detect the concentration of the tested gas of said exhaust ports if said second judge module judges that said rotating speed does not exceed the maximum (top) speed that sets through gas detection cell through alarm unit;
The valve control module is used to control the break-make of the main valve, sectioning valve and the said proportioning valve that feed fuel gas.
7. device according to claim 6 is characterized in that, said valve control module also is used to control the aperture of said proportioning valve.
8. device according to claim 6 is characterized in that, said control module also comprises:
The 3rd judge module; Be used to judge that whether said rotating speed is less than the minimum speed that sets; If said rotating speed is less than the minimum speed that sets then report to the police through alarm unit, if said rotating speed is not less than the minimum speed that sets then judges through the 4th judge module whether said concentration exceeds said concentration preset value once more;
Keep blower fan with current rotating speed operate as normal if said the 4th judge module judges that said concentration exceeds said concentration preset value once more through the blower fan control module, reduce the rotating speed of said blower fan if said the 4th judge module judges that said concentration does not exceed said concentration preset value once more through said blower fan control module.
9. according to the arbitrary described device of claim 6-8, it is characterized in that said tested gas is fuel gas, combustion-supporting gas or generates gas.
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| CN104456946A (en) * | 2014-11-05 | 2015-03-25 | 广东生益科技股份有限公司 | Heat conduction oil furnace and control method thereof |
| CN104864603A (en) * | 2015-05-27 | 2015-08-26 | 广东万和新电气股份有限公司 | Air-fuel ratio regulating method for gas heating water heater |
| CN105387613A (en) * | 2015-12-07 | 2016-03-09 | 成都前锋电子有限责任公司 | Sectionalized combustion type gas-fired water heating furnace |
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| CN106152526A (en) * | 2015-03-30 | 2016-11-23 | 银川艾尼工业科技开发有限公司 | A kind of wall-hung boiler exhaust outlet stage sampling robot control system(RCS) |
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| CN104864603B (en) * | 2015-05-27 | 2017-12-26 | 广东万和新电气股份有限公司 | Air-fuel ratio adjusting method for gas heating water heater |
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| CN109520138A (en) * | 2018-09-26 | 2019-03-26 | 中山市恒乐电器有限公司 | A kind of water heater and its detection method with detection device |
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| 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 |
| CN110343820A (en) * | 2019-07-17 | 2019-10-18 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace combustion system, annealing furnace combustion-supporting air flow amount adjustment method and device |
| CN110343820B (en) * | 2019-07-17 | 2021-08-20 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace combustion system, annealing furnace combustion air flow adjusting method and device |
| CN110425581A (en) * | 2019-07-31 | 2019-11-08 | 安徽冠东科技有限公司 | A kind of fuel gas buring intelligent controlling device |
| CN110762849A (en) * | 2019-10-11 | 2020-02-07 | 珠海格力电器股份有限公司 | Carbon monoxide detection linkage control system and control method |
| CN111043768A (en) * | 2019-12-09 | 2020-04-21 | 珠海格力电器股份有限公司 | Gas heating water heater control method and device and gas heating water heater |
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