CN1131960C - Burner controller - Google Patents
Burner controller Download PDFInfo
- Publication number
- CN1131960C CN1131960C CN96100552A CN96100552A CN1131960C CN 1131960 C CN1131960 C CN 1131960C CN 96100552 A CN96100552 A CN 96100552A CN 96100552 A CN96100552 A CN 96100552A CN 1131960 C CN1131960 C CN 1131960C
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- Prior art keywords
- combustion
- voltage
- flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/14—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Abstract
A burning controlling machine which can reduce the smell at the time of extinguishing. in This machine a half cycle of the corrugation of an AC power source voltage is counted, and a voltage of 1/n to output 1 cycle only among n cycles being counted at the time of extinguishing, is applied to a blower for combustion, and braking is applied. when the extinguishing process is completed, the machine can extinguish the fire by keeping the radio of fuel and air fixed, and also remaining fuel is less, regardless of the burning condition and gasification characteristic.
Description
The control device of the liquid fuel that the present invention relates to gasify in advance and the burner of combustion air mixing after-combustion.
Figure 10 is for example special profile of driving the burner of the described burning apparatus for combustion of liquid fuel that has earlier of flat 5-149514 communique.
Among the figure, the 1st, form the electric heater that is used for heating this gasifier 1 in the sidewall that the gasifier, 2 make the vaporizer that liquid fuel gasification uses is arranged on this gasifier 1.
The 3rd, cooperation is fixed on the restriction on the top of gasifier 1, and 4 are provided in a side of the burner head on the top of this restriction 3, and the 5th, the many glory holes that on the sidewall of this burner head 4, form.In addition, the 6th, closely wrap in the wire netting on the outer surface of burner head 4, the 7th, be configured in the lid on wire netting top, the 8th, with burner head 4 and cover 7 and be fixed on an end of using in the throttle orifice portion 3 and bury special screw in throttle orifice portion 3.
9 be provided in a side of in the burner head 4 and the mixed plate in a plurality of holes arranged on the bottom surface, makes it from a plurality of glory holes 5 ejections after the liquid fuel rectification that 9 pairs of this mixed plates have gasified.The 10th, surround the ring-type flame stabilization ring that burner head 4 is installed in the top of gasifier 1.
11 are arranged on the sidewall of gasifier 1 and at the nozzle of this gasifier 1 inner opening, this nozzle 11 is connected on the air supply pipe (not shown) that is communicated with the combustion fan (not shown).Nozzle 11 is made of inlet portion 11a, tapered portion 11b and the 11c of throat.
The 12nd, with the fuel feed pipe of nozzle 11 coaxial configurations, and the burning of its leading section supply 12a is outstanding from the 11c of throat, and the liquid fuel in the fuel tank (not shown) utilizes the petrolift (not shown) to supply in the gasifier 1 by this fuel feed pipe 12.
Secondly explanation action.By making electric heater 2 energisings, gasifier 1 is preheating to the needed temperature of liquid fuel gasification (200～300 ℃).After preheating finishes, send the combustion air of air supply pipe from combustion fan to and supply with gasifier 1 from nozzle 11.In addition, the primary air liquid fuel that is about 0.8 amount than (=air supply amount/theoretical air requirement) is supplied with gasifiers 1 from fuel feed pipe 12.
The liquid fuel of being supplied with is subjected to the effect of combustion-air flow and by micronize, gasifies on the gasification face that is preheated.The liquid burning of having gasified is during by throttle orifice portion 3, and further with the combustion air premixed, it is even that CONCENTRATION DISTRIBUTION becomes.After this, the premixed gas of liquid fuel and combustion air by rectification, is subjected to the exercising result of the sidewall of mixed plate 9 by a plurality of holes on the bottom surface of mixed plate 9, becomes even along the velocity flow profile of the above-below direction of burner head 4.
Utilize the igniter (not shown) on the glory hole 5 of burner head 4, premixed gas to be caught fire, form flame 13 and secondary flame 14.
After taking fire, utilize flame stabilization ring 10 grades to reclaim heat, give gasifier 1 heating, therefore no longer need to electric heater 2 energisings from flame.
Therefore, when this burner stops working, remove the voltage that is added on combustion pump and the combustion fan simultaneously.At this moment, petrolift almost is just to stop moment, and is different therewith, although combustion fan has stopped applying voltage, because of its inertia makes rotating speed reduce gradually, just stops after the several seconds.
Therefore, shown in the solid line among Figure 11, the minimizing speed of fuel is fast, T
0The time petrolift stop the energising after, evaporation capacity is at T
1The time vanishing.
On the other hand, the minimizing speed of combustion air is slower than fuel, shown in dotted line, at T
2In time, just stop to supply with.In this burner, from brennschuluss time T
0Rise till the T constantly because the ratio of combustion air and fuel (primary air than) still in the incendivity scope, so burn away, but after moment T, air excess, flame are blown out (blow off).
Like this, because both minimizing speed is unbalanced, make that primary air is than instantaneous increase when stopping working, owing to blown out flame, the surplus fuel of the combustion that oblique line shown in Figure 11 is partly represented is discharged into indoor.
At this moment, the part of the fuel that combustion is surplus contacts with the high-temperature part of burner, and is partly oxidized, generates materials such as acetaldehyde, sends a kind of irritating stink that has.
As the measure that reduces flame-out foul smell, having imagined a kind of is not to make the structure complicated of burner but the control device that makes the burner that the foul smell of discharging reduces when flame-out.
For example special open the described combustion event of flat 6-94235 communique and burner shown in Figure 10 basic identical, after in vaporizer 1, gasifying, mix from the combustion air of combustion fan (not shown) with from the fuel of fuel supply system (not shown), burning on burner head 4.The user disconnects the power switch (not shown) when flame-out, and the action of stopping working stops to apply voltage to the petrolift (not shown).At this moment, the method for shutting down of petrolift is identical with Figure 11, so the minimizing situation of fuel is shown in the solid line among Figure 12, from T
0To T
1Time in vanishing, identical with minimizing speed shown in Figure 11.
On the other hand, adopt following method to reduce the flow of combustion air, promptly switch the drive circuit of combustion fan (not shown),, the combustion fan (not shown) is braked by AC current-voltage being carried out halfwave rectifier or method such as full-wave rectification as shown in figure 13.
At this moment, the flow of combustion air is compared with Figure 11, at short notice vanishing as shown in figure 12.
Therefore, the minimizing speed by making combustion air and fuel makes the ratio (primary air than) of combustion air and fuel keep necessarily reducing quantity combusted about equally.And along with the minimizing of quantity combusted, a flame 13 is near burner head, and flame 13 burned device head 4 coolings are in the moment (moment T in Figure 12) of this amount of cooling water above quantity combusted, fray-out of flame.At this moment the surplus fuel of combustion is the part of representing with oblique line among Figure 12, than the minimizing among Figure 11.
The control device of the fuel device that has earlier as above constitutes, and when when flame-out AC supply voltage being carried out after the halfwave rectifier combustion fan braked, can only add roughly certain brake force, and the minimizing speed of combustion air is also just fixing.
; in the burning control of reality; the minimizing speed of fuel is not identical, this be because when flame-out slow the or fuel of gasification to arrive time of glory hole from vaporizer long etc. and owing to the structural reason of quantity combusted or burner, all can cause great changes.
Consequently exist such problem, promptly be difficult to keep the roughly the same condition of minimizing speed of combustion air and burning, be difficult to make ratio (primary air ratio) flame-out in other words thereby keep necessarily reducing quantity combusted.
During the combustion fan low speed rotation, because of inertia force is little, so air mass flow vanishing required time is short.The zone that rotating speed is low is used for weak fired state mostly, and gasification becomes obviously slowly during weak burning, and the minimizing speed of combustion air is faster than fuel, in the burner that formerly has, as shown in figure 14, makes the moment T that combustion air begins to reduce
01Lag behind, effect is identical, but the ratio destroyed equally (fuel concentration is thinning) of quantity delivered combustion air and fuel when beginning to reduce, and still has the problem of deodorizing effect difference.
On the contrary, when combustion air reduces slowly than fuel, as shown in figure 15, the moment T that combustion air begins to reduce
02Lag behind (T in flame-out course of action
0～T
2) can obtain the fuel concentration of gaseous mixture is remained on the effect same of flammable range, but the ratio of combustion air and fuel destroyed (fuel concentration thickens) when quantity delivered begins to reduce, have that not only deodorizing effect is poor, and be flourishing state easily and stop working, make the user to feel insecure problem.
There is such problem in addition, when promptly AC supply voltage being carried out after the halfwave rectifier combustion fan braked,, produces noise (unusual stop tone) owing to apply fierce brake force.
The present invention is exactly the achievement that obtains in order to address the above problem, and its objective is to obtain a kind of combustor control device, and the foul smell that it can make combustion range burner wide, that have various gasification properties discharge when flame-out is few.
Burner controller of the present invention has the gasifier that makes liquid fuel gasification, fuel supply system with this gasifier of liquid fuel supply, make the glory hole of the premixed mixture combustion of the liquid fuel that gasified and combustion air, supply with the combustion fan of combustion air, control the control circuit of this combustion fan and above-mentioned fuel supply system, in this control circuit when the AC supply voltage zero passage zero-crossing pulse generation circuit of pulsing, export the signal generation apparatus of hunting power signal according to the pulse of this zero-crossing pulse generation circuit generation, be inserted in the thyristor that connects between above-mentioned combustion fan and the above-mentioned AC supply voltage, and the circuits for triggering that make this thyristor triggering according to hunting power signal from above-mentioned signal generation apparatus output, when flame-out, when reducing with liquid fuel, combustion fan is braked, reduce air mass flow, concentration with premixed gas in flame-out course of action remains in the flammable range, in this burner controller, be provided with the counter of the half period of counting AC supply voltage waveform in the above-mentioned signal generation apparatus, the voltage that above-mentioned signal generation apparatus is only exported the 1/n in 1 cycle when flame-out in n the cycle with this rolling counters forward is added on the combustion fan, brakes.
Burner controller of the present invention has the gasifier that makes liquid fuel gasification, fuel supply system with this gasifier of liquid fuel supply, make the glory hole of the premixed mixture combustion of the liquid fuel that gasified and combustion air, supply with the combustion fan of combustion air, control the control circuit of this combustion fan and above-mentioned burning feedway, in this control circuit when the AC supply voltage zero passage zero-crossing pulse generation circuit of pulsing, the signal generation apparatus of the pulse outputting oscillation signal that takes place according to this zero-crossing pulse generation circuit, be inserted in the thyristor that connects between above-mentioned combustion fan and the above-mentioned AC supply voltage, and the circuits for triggering that make this thyristor triggering according to hunting power signal from above-mentioned signal generation apparatus output, when flame-out, when reducing with liquid fuel, combustion fan is braked, reduce air mass flow, concentration with premixed gas in flame-out course of action remains in the flammable range, in this burner controller, be provided with the counter of the half period of counting AC supply voltage waveform in the above-mentioned signal generation apparatus, above-mentioned signal generation apparatus with only export in n cycle of rolling counters forward or m cycle the voltage of 1/n of one-period and 1/m alternating voltage be added on the combustion fan and brake.
Burner controller of the present invention is in the regular hour after the flame-out beginning, combustion fan to be slowed down by inertia in said apparatus, applies the voltage of 1/n then or alternately applies the voltage of 1/n and the voltage of 1/m stops it.
Burner controller of the present invention is in said apparatus in the regular hour after the flame-out beginning, and combustion fan is applied the voltage of 1/n or alternately applies the voltage of 1/n and the voltage of 1/m makes its deceleration, stops by inertia then.
Burner controller of the present invention has the fuel supply system of feed fluid fuel, supply with the combustion fan of combustion air, control the control circuit of this combustion fan and above-mentioned fuel supply system, make the gasifier of the liquid fuel gasification of supplying with by fuel supply system, and the glory hole that makes the premixed mixture combustion of the liquid fuel that gasified by this gasifier and combustion air, when flame-out action, control circuit is controlled the rotating speed of combustion fan on one side, so that the concentration of premixed gas is remained in the flammable range, Yi Bian combustion fan is stopped.
Fig. 1 is the structure chart of burner controller of the present invention.
Fig. 2 is the flow chart of the action of expression the 1st embodiment of the present invention.
Fig. 3 is the sequential chart of voltage waveform of the action usefulness of explanation the 1st embodiment of the present invention.
Fig. 4 is the sequential chart of voltage waveform of the flame-out sequential action usefulness of explanation the 1st embodiment of the present invention.
Fig. 5 is the flow chart of the action of expression the 2nd embodiment of the present invention.
Fig. 6 is the sequential chart of voltage waveform of the action usefulness of explanation the 2nd embodiment of the present invention.
Fig. 7 is flame-out when action fuel and the key diagram of the minimizing form of combustion air of expression the 3rd embodiment of the present invention.
Fig. 8 is flame-out when action fuel and the key diagram of the minimizing form of combustion air of expression the 4th embodiment of the present invention.
Fig. 9 is flame-out when action fuel and the key diagram of the minimizing form of combustion air of expression the 5th embodiment of the present invention.
Figure 10 is the section of structure of the burner that uses of the burning apparatus for combustion of liquid fuel that has earlier.
Figure 11 is the key diagram of the burner controller that has the earlier minimizing form of fuel and combustion air when stopping working action.
Figure 12 is the key diagram that the minimizing form of fuel in the example and combustion air is arranged earlier.
Figure 13 is the voltage oscillogram when combustion fan is braked in the example arranged earlier.
Figure 14 has combustion air in the example to reduce the key diagram of speed minimizing speed form of fuel and combustion air when fast earlier.
Figure 15 has combustion air in the example to reduce the key diagram of speed minimizing speed form of fuel and combustion air when slow earlier.
Among the figure 1: gasifier
Among the figure 5: glory hole
Among the figure 21: fuel supply system (petrolift)
Among the figure 24: combustion fan
Among the figure 25: control circuit
Among the figure 28: zero-crossing pulse generation circuit
Among the figure 29: signal generation apparatus
Among the figure 31: circuits for triggering
Among the figure 32: thyristor
Embodiment 1:
Embodiments of the invention are described below with reference to the accompanying drawings.Fig. 1 is the structure chart of the control device of burner of the present invention.Be marked with prosign with the identical or suitable part of example that has earlier shown in Figure 10, its explanation is omitted.
Among Fig. 1, the 21st, the petrolift (fuel supply system) of the feed fluid fuel that uses in the example is arranged earlier, an end of this petrolift is arranged in fuel tank 22, and the other end is connecting fuel feed pipe 12.
The 23rd, the air supply pipe (combustion air supply passageway) of the supply combustion air of connection nozzle 11, the 24th, combustion fan, the 25th, the control circuit of control petrolift 21 and combustion fan 24 usefulness, the 26th, AC supply voltage, the 27th, insulating transformer, its primary coil is connected with AC supply voltage 26.
The 28th, zero-crossing pulse generation circuit, it is connecting the secondary wire coil of insulating transformer 27, is used for pulsing when AC supply voltage 26 zero passages, and the 29th, signal generation apparatus, it is set in the microcomputer 30 according to the pulse outputting oscillation signal that this zero-crossing pulse generation circuit 28 takes place.
The 31st, circuits for triggering, it triggers the thyristor 32 that is connected between combustion fan 24 and the AC supply voltage 26 according to the oscillator signal from signal generating circuit 29 outputs.The 33rd, the pump drive circuit, it is according to the drive petrolift 21 from microcomputer 30.
Secondly, the igniting action is described.Burning begins the action of (igniting) and has example roughly the same earlier.
After gasifier 1 was heated to set point of temperature (200～300 ℃), combustion fan 24 began rotation, supplied with the air of the needed quantity of burning to gasifier 1.After making the action of igniter (not shown), petrolift 21 begins to supply with fuel.The liquid fuel of ejection gasifies on gasification face in gasifier 1, mixes premixed gas with combustion air.This premixed gas catches fire on the glory hole 5 of burner head 4 by restriction 3 and mixed plate 9 backs, forms flame 13 and secondary flame 14.
Gas after the burning be used for heating of house etc. after air from the convection fan (not shown) mixes.
Fig. 2 is a flow chart of representing that the merit of the 1st embodiment of the present invention that as above constitutes is done.After above-mentioned igniting action, take fire (step 50).In the combustion process, microcomputer 30 is determined quantity combusted according to the difference of design temperature and room temperature, in order to supply with the fuel corresponding with this quantity combusted to gasifier 1, the signal of regulation is exported to drive circuit 33, drives combustion pump 21.
On the other hand, for the concentration that makes premixed gas keeps certain, combustion air that will be corresponding with this fuel is supplied with gasifier 1, and for this reason, control combustion fan 24 makes it reach the rotating speed of storing in advance in the microcomputer 30 (step 51).
When user's disconnecting power switch (not shown) was stopped working action, the processing of stopping working (step 52) was stopped to apply voltage to petrolift 21 by microcomputer 30, and stopped to supply with fuel (step 53).
On the other hand, about combustion air, will add up from each zero-crossing pulse (b Fig. 3) of zero-crossing pulse generation circuit 28 outputs (step 54) by the counter that is located in the signal generation apparatus 29.
When this count value than setting n hour (step 55), from signal generation apparatus 29 output L0 (low level) signals (step 56), not to combustion fan 24 making alives.Before count value reaches n, go on foot 54～56 processing repeatedly, when counting reaches n, make counter O reset (step 57), from signal generation apparatus 29 output Hi (high level) signals (step 58), voltage is added on the combustion fan 24.
Carry out above processing repeatedly, the voltage of 1/n is added to (d among Fig. 3) on the combustion fan.After this, if flame-out processing finishes, just from signal generation apparatus 29 output L
0Signal (step 59), combustion fan 24 is halted state.At this moment, if setting n is made as 2, then identical with waveform after the existing halfwave rectifier, the minimizing of combustion air is fastest.On the contrary, if setting n is increased, then reduce speed with slack-off.
At this moment, if n is excessive, then become with Figure 11 in dotted line shown in stop by inertia the time minimizing speed identical.Like this, if determine setting n according to the quantity combusted before just stopping working and the gas characteristic of burner, even it is then wide and have in the burner of various gasification properties in combustion range, thereby the maintenance when quantity delivered begins to reduce of the mixture strength in the time of also making flame-out action reduces flame-out definitely, therefore can reduce the surplus fuel of combustion, the few burner controller of foul smell of discharging in the time of can obtaining to stop working.
The driving signal of petrolift 21 carries out the pulse control shown in the e among Fig. 4, but, can produce the timing offset of maximum 1 pulse period between the time started that time started that fuel reduces and combustion air reduce if the signal that disconnects the running switch with the user is that benchmark begins combustion fan 24 is braked when control.The interval in cycle is long during particularly weak the burning, and it is big that deviation becomes.
Therefore, be not benchmark with the power switch cut-off signal, but pump drive signal (dotted line shown in the e among Fig. 4) is given in pulse of output after disconnection, is benchmark with this pulse, just can make zero hour of quantity delivered minimizing of fuel and combustion air consistent accurately.
Embodiment 2:
Fig. 5 is the action flow chart of the 2nd embodiment of the present invention.Be equivalent to the output signal processing section (60 parts among Fig. 2) among Fig. 2.
After the flame-out processing beginning, the counters that are located in the signal generation apparatus 29 add up (step 61) to each zero-crossing pulse.Be masked as at 0 o'clock (step 62), carry out identical action, the voltage of 1/n is added on the combustion fan 24 with above-mentioned the 1st embodiment.
When count value reaches n and output signal when being Hi (high level) (step 67), with above-mentioned sign counter-rotating (0 → 1) (step 66).
Secondly after will count addition,, be worth m in accordance with regulations and handle (going on foot 68) owing to be masked as 1, identical with foregoing processing, the voltage of 1/m is added on the combustion fan 24, make sign reverse once more (1 → 0).
After, carry out this processing repeatedly, produce the outputting oscillation signal shown in Fig. 6 C, become the voltage of the 1/n shown in Fig. 6 d and 1/m alternating voltage be added on the combustion fan 24.Therefore, can set carefullyyer than the minimizing speed of the combustion fan 24 shown in the 1st embodiment, so it is wideer and have in the burner of various gasification properties in combustion range, thereby just can make mixture strength reduce to begin to keep to reduce definitely from quantity delivered when stopping working action stops working, so can reduce the surplus fuel of combustion, the control device of the burner that the foul smell of discharging is few in the time of obtaining to stop working.
Embodiment 3:
Fig. 7 is the key diagram of the burner of expression the 3rd embodiment of the present invention minimizing form of fuel and combustion air when flame-out.
When flame-out, wait slowly under the situation of burner former thereby that shown in the solid line among Fig. 7, change or quantity combusted, because of gasification from the moment T that begins to reduce in the minimizing speed of fuel
0To T
03During, stop to combustion fan 24 power supply, press inertia minimizing combustion air quantity delivered.
Then at moment T
03Combustion fan 24 is applied braking, reduce air capacity, make it at T
2Vanishing.
By such action, the fuel minimizing is caused in flame-out back because of gasification waits slowly situation of change unlike example is arranged earlier linearly, reduce but shown in the solid line among Fig. 7, be parabola, in this case, thereby maintenance reduced flame-out definitely when the mixture strength in the time of also making flame-out the action began from the quantity delivered minimizing, therefore can reduce the surplus fuel of combustion, the few burner controller of foul smell of discharging in the time of obtaining to stop working.
Embodiment 4:
Fig. 8 is the key diagram of the burner of expression the 4th embodiment of the present invention minimizing form of fuel and combustion air when flame-out.
The minimizing speed of fuel when flame-out since gasification wait slowly under the situation of burner former thereby that shown in the solid line among Fig. 8, change or quantity combusted, from beginning to reduce T constantly
0To T
03During, combustion fan 24 is applied braking, air capacity is sharply reduced, then, at moment T
03Stop to press inertia and reducing combustion air, at T to combustion fan 24 power supplies
2Constantly make its vanishing.
By such action, flame-out back is owing to gasification waits reason slowly, fuel is temporary transient sharply to be reduced, but after this continue to supply with at leisure, in the case, thereby it is flame-out that the mixture strength in the time of also making flame-out the action begins maintenance minimizing definitely from the quantity delivered minimizing, fires the fuel that remains so can reduce, the few burner controller of foul smell that discharges in the time of obtaining to stop working.
Embodiment 5:
Fig. 9 is the key diagram of the burner of expression the 5th embodiment of the present invention minimizing form of fuel and combustion air when flame-out.
The minimizing speed of fuel is owing to gasification waits under the situation of burner former thereby that change shown in the solid line among Fig. 9 or fuel quantity slowly when flame-out, in order just to keep the ratio of fuel and combustion air certain from flame-out beginning, control like this, make change in rotational speed with in advance consistent with the variation of the corresponding fuel minimizing of burner or quantity combusted.Here,, paint equally with the fuel minimizing speed among Fig. 9 Fig. 7 in order to compare, but with both relatively after, can find out significantly that the concentration rate of fuel among Fig. 9 and combustion air can be with best state variation.
Like this, owing to can keep flame-out under certain state more accurately at concentration rate with fuel and combustion air, therefore have no matter in the burner of the gasification property that fuel with what kind of change shape reduces, can both reduce the surplus fuel of combustion, the few burner controller of foul smell of discharging in the time of obtaining to stop working.
Claims (4)
1. burner controller, it is characterized in that, it has the gasifier that makes liquid fuel gasification, fuel supply system with this gasifier of liquid fuel supply, make the glory hole of the premixed mixture combustion of the liquid fuel that gasified and combustion air, supply with the combustion fan of combustion air, control the control circuit of this combustion fan and above-mentioned fuel supply system, in this control circuit when the AC supply voltage zero passage zero-crossing pulse generation circuit of pulsing, the signal generation apparatus of the pulse outputting oscillation signal that takes place according to this zero-crossing pulse generation circuit, be inserted in the thyristor that connects between above-mentioned combustion fan and the above-mentioned AC supply voltage, and according to circuits for triggering from this thyristor of hunting power signal triggering of signal generation apparatus output, when flame-out, when reducing with liquid fuel, combustion fan is braked, air mass flow is reduced, concentration with premixed gas in flame-out course of action remains in the flammable range, in this burner controller, be provided with the counter of the half period of counting AC supply voltage waveform in the above-mentioned signal generation apparatus, when the count value of counter than setting value n hour, the voltage that above-mentioned signal generation apparatus is only exported 1/n in each cycle in n the cycle of this rolling counters forward when flame-out is added on the combustion fan, pressure fan inertia is slowed down, when the count value of counter during for setting value n, pressurization is braked to pressure fan.
2. burner controller, it is characterized in that, it has the gasifier that makes liquid fuel gasification, fuel supply system with this gasifier of liquid fuel supply, make the glory hole of the premixed mixture combustion of the liquid fuel that gasified and combustion air, supply with the combustion fan of combustion air, control the control circuit of this combustion fan and above-mentioned fuel supply system, in this control circuit when the AC supply voltage zero passage zero-crossing pulse generation circuit of pulsing, export the signal generation apparatus of hunting power signal according to the pulse of this zero-crossing pulse generation circuit generation, be inserted in the thyristor that connects between above-mentioned combustion fan and the above-mentioned AC supply voltage, and according to circuits for triggering from this thyristor of hunting power signal triggering of signal generation apparatus output, when flame-out, when reducing with liquid fuel, fuel is braked with pressure fan, reduce air mass flow, concentration with premixed gas in flame-out course of action remains in the flammable range, in this burner controller, be provided with the counter of the half period of counting AC supply voltage waveform in the above-mentioned signal generation apparatus, be masked as 0 or at 1 o'clock at above-mentioned counter respectively, the count value of counter is compared with setting value n or m, when the count value of counter than setting value hour, above-mentioned signal generation apparatus with in n cycle of rolling counters forward or m cycle each cycle only export the voltage of 1/n and 1/m alternating voltage be added on the combustion fan, when the count value of counter reaches setting value n or m respectively, make above-mentioned sign counter-rotating, brake thus.
3. claim 1 or 2 described burner controllers, it is characterized in that, in above-mentioned number generating means certain hour after the flame-out beginning, combustion fan is slowed down by inertia, apply the voltage of 1/n then or alternately apply the voltage of 1/n and the voltage of 1/m stops it.
4. claim 1 or 2 described burner controllers, it is characterized in that: above-mentioned number generating means is in the certain hour of flame-out beginning, combustion fan is applied the voltage of 1/n or alternately applies the voltage of 1/n and the voltage of 1/m makes its deceleration, stop by inertia then.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200831/1995 | 1995-08-07 | ||
| JP7200831A JP3024520B2 (en) | 1995-08-07 | 1995-08-07 | Combustor control device |
| JP200831/95 | 1995-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1164003A CN1164003A (en) | 1997-11-05 |
| CN1131960C true CN1131960C (en) | 2003-12-24 |
Family
ID=16430935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96100552A Expired - Fee Related CN1131960C (en) | 1995-08-07 | 1996-04-09 | Burner controller |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3024520B2 (en) |
| KR (1) | KR100190460B1 (en) |
| CN (1) | CN1131960C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010055567B4 (en) * | 2010-12-21 | 2012-08-02 | Robert Bosch Gmbh | Method for stabilizing a performance of a gas-fired burner |
| JP6822654B2 (en) * | 2016-10-07 | 2021-01-27 | 株式会社トヨトミ | Fire extinguishing control device for pot-type oil combustor |
-
1995
- 1995-08-07 JP JP7200831A patent/JP3024520B2/en not_active Expired - Fee Related
-
1996
- 1996-04-09 CN CN96100552A patent/CN1131960C/en not_active Expired - Fee Related
- 1996-08-02 KR KR1019960032325A patent/KR100190460B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0949629A (en) | 1997-02-18 |
| KR100190460B1 (en) | 1999-06-01 |
| KR970011568A (en) | 1997-03-27 |
| CN1164003A (en) | 1997-11-05 |
| JP3024520B2 (en) | 2000-03-21 |
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