CN101063522A - Combustion apparatus - Google Patents
Combustion apparatus Download PDFInfo
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- CN101063522A CN101063522A CNA2007100976339A CN200710097633A CN101063522A CN 101063522 A CN101063522 A CN 101063522A CN A2007100976339 A CNA2007100976339 A CN A2007100976339A CN 200710097633 A CN200710097633 A CN 200710097633A CN 101063522 A CN101063522 A CN 101063522A
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- Prior art keywords
- air
- detection means
- current detection
- mentioned
- gas current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/08—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
- F23D14/085—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head with injector axis inclined to the burner head axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/08—Regulating air supply or draught by power-assisted systems
- F23N3/082—Regulating air supply or draught by power-assisted systems using electronic means
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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
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/06041—Staged supply of oxidant
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
- Gas Burners (AREA)
Abstract
The invention provides a combustion device capable of surely detecting shortage of air volume to fuel gas volume. In this combustion device 1 where an air-fuel mixture of insufficient oxygen, prepared by mixing the primary air and the fuel gas is primarily burnt, and then secondarily burnt while receiving the supply of secondary air 67, a first ion electric current detecting member 65 is disposed in the flame of the primary combustion, a second ion electric current detecting member 66 is disposed near secondary air supply ports 20, 21, 63, 64 supplying the secondary air 67, and at least one of a ratio of the primary air volume and the secondary air volume, the total of the primary air volume and the secondary air volume, and the fuel gas volume, is controlled on the basis of detected values of the ion electric current detecting members 65, 66.
Description
Technical field
The present invention relates to a kind of burner, especially relate to the burner that a kind of recommendation is used for the hot water supply device or the device of having a bath.
Background technology
Burner is the main building block of the water heater or the device of having a bath, factory just much less, even also extensively popularize in general family.
But in recent years, the caused environmental disruption of acid rain has become deep social concern, reduces NO
XThe total release of (nitrogen oxide) has become the task of top priority.
The burner that has, can adopt as the such small-sized device of hot water supply apparatus and can suppress NO
XThe structure of generation, adopt the combustion system that is called as the bias combustion method.
So-called bias combustion method, the thin gaseous mixture that is got by about 1.6 times air of premixed theoretical air requirement in fuel gas produces main flame exactly, the booster flame that near the gaseous mixture that configuration is few by the Air mixing amount this main flame, fuel gas concentration is high produces.
Use the burner of bias combustion, known have for example patent documentation 1,2 disclosed such structures.
In addition, at NO
XThe few combustion system of generation in be called the burning form of two-stage combustion method in addition.So-called two-stage combustion method is under oxygen state, burner oil gas, gives this gas igniting and makes it produce a flame, makes it produce secondary flame burning form to the unburned gas feeding secondary air.
[patent documentation 1] Japanese kokai publication hei 5-118516 communique
[patent documentation 2] Japanese kokai publication hei 6-126788 communique
[patent documentation 3] Japanese kokai publication sho 52-143524 communique
Summary of the invention
Though adopt the burner NO of bias combustion method
XGeneration few, on market, get a good review, but exist to regulate than (Turn Down Ratio T.D.R) little such shortcoming.Especially, adopt the burner of bias combustion method, exist to be difficult to make it in the such shortcoming of the little zonal combustion of caloric value.
That is, in the bias combustion method, as mentioned above, the thin gaseous mixture that is formed by about 1.6 times air of premixed theoretical air requirement in fuel gas produces main flame.Because this gaseous mixture is thin, so burning velocity is slow.
So, adopt the burner of bias combustion method, in order to generate thin gaseous mixture, though have air blast, use air blast all the year round, if air blast is aging, then air output reduces gradually.In addition, if the plugged filter of air blast, air output reduces.If air output reduces, the air capacity that then forms the gaseous mixture of main flame reduces, and the air capacity of mixing is near theoretical air requirement.Consequently, main flame burning excessive velocities.Therefore, if timeliness changes all the year round, the base end part with flame moves closer to the tendency of glory hole.Therefore, if make it in the little zonal combustion of caloric value, the base end part of flame sustains damage glory hole near glory hole.Therefore, adopt the burner of bias combustion method, reckon with that timeliness changes all the year round, have to be limited in the burning in the little zone of caloric value.
In addition, the bias combustion method has the narrower such restriction of scope of the gas that can use.That is, though the fuel gas that also has gas company to supply with is a situation about only being made of single composition, most cases is that the fuel gas of multiple composition mixes.Therefore, even the heat (heat of unit volume) that produces is identical, burning velocity also is different at each gas company.
Corresponding, the bias combustion method is burnt under the state of air excess in order to make main flame, and the slow fuel gas of burning velocity produces arcing, can not make its burn steadily.
On the other hand, compare, can will regulate than setting higherly in the situation that adopts the two-stage combustion method with the situation that adopts the bias combustion method.In addition, the kind of the fuel gas that can use is also many.But the two-stage combustion method is owing to being that fuel gas is burnt under oxygen state, so the fired state instability.Therefore, the only limiting to of the employing two-stage combustion methods such as water heater of the practicality of selling on market known, and do not seen as yet.
The burner of two-stage combustion form has the structure that the air burning member that makes generation secondary flame in the downstream of a flame clips the glory hole member that produces a flame.
In the burner of the employed existing two-stage combustion form of purposes beyond the hot water supply device, though the parts as the diagnosing combustion state use thermocouple, but owing to can not detect the deficiency of the air capacity of being supplied with thermocouple, therefore, the recent gas current detection means (probe) that replaces the gas current of thermoelectric special occasionally employing energy flame detection.Have ion in flame, flame is electric conductor.And, detect one time in the flame ionic weight and the ionic weight of secondary flame, calculate both poor.Therefore, need the gas current detection means be set at two places of burner.
Recent hot water supply device is developing miniaturization.Thereupon, requirement is built in the also miniaturization of burner in the water heater.Therefore, if two gas current detection means are set in burner, then two gas current detection means are close easily.And gas current flows between two gas current detection means easily, is unfavorable for very much the detection of fired state.
Therefore, the purpose of this invention is to provide and a kind ofly can detect the burner of air capacity reliably with respect to the not enough situation of the fuel gas scale of construction.
One form of the burner of the present invention that is used to address the above problem, the gaseous mixture that is the not enough state of the oxygen that mixes of a kind of primary air and fuel gas carries out primary combustion, the burner of accepting the supply of auxiliary air again and carrying out second-time burning, it is characterized in that: the first gas current detection means is set in the flame of above-mentioned primary combustion, and near the auxiliary air supply port of supplying with above-mentioned auxiliary air, the second gas current detection means is set, according to the detected value of two gas current detection means, the air that control is supplied with and at least one in the fuel gas.
The first gas current detection means connects the flame front of the high temperature of a flame, and its fore-end is configured in the inside of a flame.Owing in the inside of a flame the not gaseous mixture of combustion is arranged, so temperature is low.Therefore, the first gas current detection means bulk temperature is not too high.In addition, the second gas current detection means is cooled off by auxiliary air.Therefore, can avoid the first gas current detection means and the second gas current detection means temperature high and be out of shape.In addition, the fired state of burner can be detected, unusual burning normalization can be further made rightly.
As mentioned above, because two gas current detection means are set, therefore, the output valve that is obtained by the first gas current detection means and the second gas current detection means does not change synchronously with the minimizing of the air capacity of being supplied with, and can detect the situation that the air capacity supplied with has reduced reliably.
For the air of being supplied with, can control the allocation proportion of adjusting quantity delivered for example or primary air and auxiliary air.
Burner of the present invention is that the gaseous mixture of the not enough state of the oxygen that mixes of a kind of primary air and fuel gas carries out primary combustion, the burner of accepting the supply of auxiliary air again and carrying out second-time burning, it is characterized in that: the first gas current detection means is set in the flame of above-mentioned primary combustion, and near the auxiliary air supply port of supplying with above-mentioned auxiliary air, the second gas current detection means is set, according to the detected value of two gas current detection means, the ratio of control primary air amount and auxiliary air amount, the total amount of primary air amount and auxiliary air amount, with in the fuel gas scale of construction at least one.
If implement the present invention, then can obtain the effect same with foregoing invention.In addition; in the present invention; because detected value according to two gas current detection means; the total amount of ratio, primary air amount and the auxiliary air amount of control primary air amount and auxiliary air amount and at least one in the fuel gas scale of construction; so; even fired state is unusual, also can make its normalization rightly.
As mentioned above, because two gas current detection means are set, therefore, the output valve that is obtained by the first gas current detection means and the second gas current detection means does not change synchronously with the minimizing of the air capacity of being supplied with, and can detect the situation that the air capacity of being supplied with has reduced reliably.
Burner of the present invention has the premixed member, the air flow circuit member, the glory hole member, above-mentioned premixed member imports fuel gas and generates the gaseous mixture of the not enough state of oxygen with primary air, above-mentioned air flow circuit member is the wall shape, and it has the auxiliary air supply port of feeding secondary air in front, above-mentioned glory hole member is configured between two air flow circuit members, or between above-mentioned air flow circuit member and other the wall, by being formed burning portion by the space of glory hole member and the encirclement of air flow circuit member, above-mentioned gaseous mixture is discharged into burning portion and carries out primary combustion from the glory hole member, accept the supply of auxiliary air and carry out second-time burning from the auxiliary air supply port of air flow circuit member again, it is characterized in that: the first gas current detection means is set in the flame of above-mentioned primary combustion, and the second gas current detection means is set near above-mentioned auxiliary air supply port, controls the ratio of primary air amount and auxiliary air amount according to the detected value of two gas current detection means, the total amount of primary air amount and auxiliary air amount, with in the fuel gas scale of construction at least one.
In burner of the present invention, because the first gas current detection means is set in the flame of primary combustion, and the second gas current detection means is set near the air supply port, so, two gas current detection means temperature are not high, particularly, the auxiliary air cooling that the second gas current detection means is supplied with from the air supply port can be avoided high temperature deformation.
In addition; when normal combustion; owing to protect the second gas current detection means and not influenced by flame with auxiliary air; so; can prevent between the first gas current detection means and the second gas current detection means, to flow through faint gas current, the abnormal combustion in the time of detecting lack of air reliably.
Have again; at detected value when to detect burning be unusual situation according to two gas current detection means; controlled the total amount of ratio, primary air amount and auxiliary air amount of primary air amount and auxiliary air amount and at least one side in the fuel gas scale of construction, therefore can make abnormal combustion normalization.
Another form of burner of the present invention is the gaseous mixture of the not enough state of the oxygen that mixes of a kind of primary air and fuel gas and carry out primary combustion, the burner of accepting the supply of auxiliary air again and carrying out second-time burning, it is characterized in that: the first gas current detection means is set in the flame of above-mentioned primary combustion, base portion at the flame of above-mentioned primary combustion is provided with the air supply hole of supplying with the air different with primary air, the second gas current detection means is set near above-mentioned air supply hole, according to the detected value of two gas current detection means, air that control is supplied with and at least one side in the fuel gas.
Burner of the present invention has premixed member, air flow circuit member, glory hole member, above-mentioned premixed member imports fuel gas and generates the gaseous mixture of the not enough state of oxygen with primary air, above-mentioned air flow circuit member is the wall shape and has the auxiliary air supply port; Above-mentioned glory hole member is configured between two air flow circuit members or between above-mentioned air flow circuit member and other the wall, form burning portion by the space that surrounds with glory hole member and air flow circuit member, above-mentioned gaseous mixture is released to burning portion and carries out primary combustion from the glory hole member.Above-mentioned auxiliary air supply port also can be arranged on the base portion of the flame of above-mentioned primary combustion.
As mentioned above, the leading section of the first gas current detection means connects the flame front of a lower flame of temperature and is configured in inside, and bulk temperature is very not high.In addition, the second gas current detection means is cooled off by air.Therefore, can avoid two gas current detection means temperature high and be out of shape.
Burner of the present invention in the burner of above-mentioned invention arbitrarily, is characterized in that: make the crooked or bending of leading section of the first gas current detection means.
The fore-end of the first gas current detection means is preferably to the crooked or bending of upstream side of the air-flow of fuel gas.
Burner of the present invention in the burner of above-mentioned invention arbitrarily, is characterized in that: make the crooked or bending of leading section of the second gas current detection means.
The preferably crooked or bending of the fore-end of the second gas current detection means to the center position of combustion zone.
In addition, burner of the present invention is characterised in that: air is blown on the second gas current detection means.Owing to air is blown on the second gas current detection means, so the second gas current detection means is cooled off by air.Therefore, can avoid high temperature deformation.In addition, owing to around the second gas current detection means, have air, between the first gas current detection means and the second gas current detection means, flow so can prevent gas current.
Burner of the present invention is characterised in that: have memory, this memory stores is corresponding with the limits value of carbon monoxide emission concentration, with the relevant a reference value of difference of the detection output that detects by the first gas current detection means and the second gas current detection means.
In addition, burner of the present invention is characterised in that: the value to the difference of above-mentioned each output valve is set the regulation amplitude.Though the center of regulation amplitude can at random be set, for example can make its value consistent with the difference of each output valve.Owing to set the regulation amplitude, so judge easily whether the fired state of burner is normal.
Have, burner of the present invention is to being compared by the operation values of the difference of the first gas current detection means and detected each output valve of the second gas current detection means and the value that is stored in the above-mentioned memory again.
And, be operation values than being stored in value in the memory when big in relatively result, increase the quantity delivered of air, and/or the quantity delivered of minimizing fuel gas.Therefore, can make the burning normalization of burner.In addition, even set greatlyyer with respect to the ratio of primary air amount the auxiliary air amount, also can make the burning normalization of burner.
On the contrary, the value in being stored in memory is carried out normal combustion than under the big situation of operation values.
Burner of the present invention is characterised in that: the path of passing through as air have first path in the above-mentioned air flow circuit member, between above-mentioned premixed member and the glory hole member to second path of burning portion, the Third Road footpath that air is flow through with fuel gas; From above-mentioned first path and the second path feeding secondary air, directly import primary air from above-mentioned Third Road; Have corresponding with the limits value of carbon monoxide emission concentration, relevant with the difference of the detection output that is detected by the first gas current detection means and second gas current detection means a reference value is carried out memory storing, to comparing by the operation values of the difference of the first gas current detection means and detected each output valve of the second gas current detection means and the value that is stored in the above-mentioned memory, than being stored under the big situation of value in the memory, increase quantity delivered in above-mentioned operation values by the auxiliary air in above-mentioned first path and second path.
When enforcement is of the present invention; the abnormal combustion of representing burner according to the operation values of calculating with detected each output valve of two gas current detection means; then, oxygen can be supplied with fully, burning normalization can be made by increasing quantity delivered by the auxiliary air in first path and second path.
In burner of the present invention, the first gas current detection means is set in a flame, the second gas current detection means is set, thereby auxiliary air is run into the second gas current detection means near the auxiliary air supply port.
At this, the first gas current detection means connects the flame front of the high temperature of a flame, and its fore-end is configured in the inside of a flame.Owing to have the not gaseous mixture of combustion in the inside of a flame, so temperature is low.Therefore, the first gas current detection means bulk temperature can be too not high.In addition, the second gas current detection means is cooled off by auxiliary air.Therefore, any one of the first gas current detection means and the second gas current detection means can high temperature deformation, can detect the unusual of the burning that causes with respect to the fuel gas quantity not sufficient owing to air capacity reliably.
Description of drawings
Fig. 1 be used for schematically illustrating burner of the present invention structure burner dissect stereogram.
Fig. 2 is the stereogram of burner of the embodiment of practicality of the present invention.
Fig. 3 is the vertical view of state of taking in the burner of a plurality of Fig. 2 in the enclosure.
Fig. 4 is the IV-IV cutaway view of Fig. 3.
Fig. 5 is the cutaway view of the burner of Fig. 2.
Fig. 6 is the exploded perspective view of the burner of Fig. 2.
Fig. 7 is the cutaway view of the air flow circuit member of present embodiment.
Fig. 8 is the stereogram that dissects that disposes the burner of implementing another gas current detection means that can use when of the present invention.
Fig. 9 is the curve map of relation of the amount of the output valve of the expression first gas current detection means and the second gas current detection means and carbon monoxide CO.
Figure 10 is the control system figure that is used to control the air capacity and the fuel gas scale of construction.
Figure 11 is the flow chart of the fired state of diagnosing combustion device.
Figure 12 is the stereogram that dissects that the position burner different with implementing Fig. 1 of the present invention, Fig. 8 is set of the second gas current detection means.
Figure 13 is the flow chart that comprises fired state structure, the diagnosing combustion device of the control that reduces air output.
Figure 14 be used for schematically illustrating the second gas current detection means be provided with the position different with Fig. 1, Fig. 8 and dispose the first gas current detection means different with Fig. 1, Figure 12 burner structure, burner dissect stereogram.
The specific embodiment
Below embodiments of the invention are described.At first describe with reference to the schematic diagram of Fig. 1 schematic configuration and basic function to burner of the present invention.Fig. 1 is used for conceptually the stereogram that dissects that structure to burner 1 of the present invention describes.
In the following description, to put burner 1 and make it be benchmark in attitude that upper side produces flame to upper and lower relation with vertical.In addition, above-mentioned upstream side, downstream are to be benchmark with the mobile of air or fuel gas.So-called width is as direction (the arrow W direction among the figure) positive, that be equivalent to left and right directions with burner 1 area the best part.
Modularization is used though the burner 1 of present embodiment can be accommodated a plurality of in the enclosure, also can only use one.The burner 1 of present embodiment has premixed member 2, glory hole member 3 and two air flow circuit members 5.In the burner 1 of present embodiment, chimeric premixed member 2 and glory hole member 3 and constitute a middleware 6.And this middleware 6 is clipped between two air flow circuit members 5.But, when reality is used, as said air flow circuit member 5, middleware 6, air flow circuit member 5, middleware 6, air flow circuit member 5..., alternate configurations air flow circuit member 5 and middleware 6 and be planar.
Premixed member 2 as the composition member of burner 1 is performance members in the function of inner pre-mixed fuel gas and air.Premixed member 2 comprises: the mixing portion 7 with detour; Be provided with the opening row portion 10 of opening 8 Cheng Liezhuan.Opening row portion 10 is that the cross section is roughly more linearly extended position, rectangular cavity.
Fig. 7 is the cutaway view of the air flow circuit member 5 of present embodiment, represents flowing of inner air.Air flow circuit member 5 is that general shape is the member of thin wall shape.The surface 11 of air flow circuit member 5, the back side 12 usefulness thin plates are made, make this surface 11, the back side 12 separate small engaging with gap, and be this air flow circuit member 53 combined forming in limit except lower face side, portion is provided with the space that becomes air flow circuit 13 within it.
Crooked plates of air flow circuit member 5 and constitute surface 11 (table side plates), the back side 12 (inboard plate).The fore-end of connection table side plate and inboard plate has the bend 14 of acute angle, constitutes top 9 by this bend 14.Top 9 is the crest line shape and extends.
On the other hand, the base end side of air flow circuit member 5 opens wide between the plate of surface 11 (table side plates) and the back side 12 (inboard plate), forms air and imports opening 15.
Air flow circuit member 5 is provided with in 3 zones and discharges the opening that air is used.As described above, if arranged side by side a plurality of burners 1 of configuration, then air flow circuit member 5 and middleware 6 alternate configurations and be planar.In addition, on the surface 11 of each air flow circuit member 5 (table side plate), the same area of the back side 12 (inboard plate) is provided with the opening of same number.
Be provided with the zone that discharges the opening that air uses roughly be divided into leading section, towards the position of the first burning portion 46 with towards the position of middleware 6.
That is to say that though the plate major part of the surface 11 of air flow circuit member 5 (table side plate), the back side (inboard plate) is parallel, its fore-end bends to inverted v-shaped, is formed with inclined plane 16,17 in face side and rear side.And, on this inclined plane 16,17, be provided with leading section opening 20.In addition, on whose forwardmost end portions (crest line part), also be provided with leading section opening 21.Leading section opening the 20, the 21st is provided with for auxiliary air 67 is supplied to secondary flame 68.In Fig. 1, though because paper,, in fact find out to have secondary flame 68 in the outside (in Fig. 1, seeing it is upside) of the fore-end of air flow circuit member 5 only at the middle side of the fore-end of the air flow circuit member 5 secondary flame 68 that drawn.
In addition, as shown in Figure 1, it is narrower than the width of base end part side that air flow circuit 13 width of front are made at the surface 11 of air flow circuit member 5, the back side 12, on the position of the cardinal extremity part that is equivalent to the first burning portion 46 stage portion arranged.This stage portion also is inclined plane 22.And, on above-mentioned stage portion, be provided with release air opening 23 to burning portion.Discharge air to burning portion and auxiliary air is supplied in the flame 24 of the first burning portion 46, make the part burning of a flame 24, produce secondary flame 68 on the part in the first burning portion 46 with opening 23.
Have again, the surface 11 of air flow circuit member 5, the back side 12, also be provided with on the position of middleware 6 and discharge air with opening (upstream side discharges the air opening) 48.Discharge air with opening (upstream side discharges the air opening) 48 owing on surface 11, the back side 12, be provided with, make flame stabilizationization so can supply air to the side surface part of glory hole member 3.
On the mid portion of side wall portion 31,32, be provided with laterally the bellying 34 that (thickness direction) bloats.Bellying 34 is along the whole width setting of glory hole member 3.
As shown in Figure 1, side wall portion 31,32 unlimited distolateral forms chimeric with groove 38 through 90 ° of twice bendings and in the outside.Chimeric diapire 36 with groove 38 is vertical with side wall portion 31,32, and chimeric outer wall 37 with groove 38 is parallel with side wall portion 31,32.
As mentioned above, decompression wall 26 is installed on body member 25.Decompression wall 26 is fixed on the side wall portion 31,32 of body member 25, between the side wall portion 31,32 of itself and body member 25 space 29 is arranged.Space 29 upper side opening in the drawings.This opening is brought into play function as side opening 27.
On the side wall portion 31,32 of body member 25, on the position of decompression wall 26, be provided with opening 35.Opening 35 is connected with inboard and space 29 with body member 25.
Below each member relation is each other described.
Fig. 6 is the exploded perspective view of burner 1.As shown in Figure 6, burner 1 disposes premixed member 2 and glory hole member 3 between two air flow circuit members 5.
In the present embodiment, as shown in Figure 1, premixed member 2 and glory hole member 3 tablings and constitute a middleware 6.More particularly, between the side wall portion 31,32 of glory hole member 3, insert the opening row portion 10 of premixed member 2.In the actual fabrication process, by inserting premixed member 2 from the opening (bottom of figure) between the side wall portion 31,32 of glory hole member 3 and both being connected.
The concaveconvex shape part that does not show with figure between side wall portion 31,32 and the opening row portion 10 is connected.That is, opening row portion 10 usefulness concave-convex clamps are between side wall portion 31 and side wall portion 32, thereby premixed member 2 and glory hole member 3 are by integrated.Owing to carry out part connection with concaveconvex shape as mentioned above between side wall portion 31,32 and the opening row portion 10, so anti-mistake is exactly a local detachment between the two.The cross section of Fig. 1 shows the cross section on side wall portion 31,32 and the position that opening row portion 10 separates.
Between side wall portion 31,32, between end face 30 parts of the top of opening row portion 10 and glory hole member 3, be formed with bigger space 47.In the present embodiment, the space 47 by the downstream of above-mentioned blending space 39 and opening row portion 10 forms glory hole upstream side stream 49.
In the both sides of middleware 6 air flow circuit member 5 is installed.Air flow circuit member 5 imports in the opening 15 by the chimeric air that is entrenched in base end side with groove 38 that makes glory hole member 3 and combines with middleware 6.That is, chimeric outer wall 37 with groove 38 is inserted into air imports in the opening 15, the jag (lower end) of air flow circuit member 5 is inserted into chimeric with in the groove 38, thereby it is chimeric with on the diapire 36 of groove 38 that it is against.
Air flow circuit member 5 carries out the part with the concaveconvex shape that middleware 6 (glory hole member 3) does not show with figure and is connected, and both are by integrated.Because carrying out the part with concaveconvex shape as described above, both connect, so, be exactly that local detachment conversely speaking.In order to understand its function easily, the section of Fig. 1 shows the position that air flow circuit member 5 separates with middleware 6 (glory hole member 3).But, to locate in the end (lower end side of figure) of the upstream side of burner 1, the gap 40 between air flow circuit member 5 and the middleware 6 is by chimeric diapire 36 sealings with groove 38.Therefore, gap 40 directly is not communicated with the external world of base end side.
As mentioned above, though glory hole member 3 is in the position that is clipped by two air flow circuit members 5, the end face 30 of glory hole member 3 is compared with air flow circuit member 5, is in bottom one side of figure, is in to be buried on the position between the air flow circuit member 5.Therefore, separated by the wall of two air flow circuit members 5 from space than the position of the end face 30 forward distolateral (downstreams) of glory hole member 3.At present embodiment, by the space that end face 30 and two air flow circuit members 5 surrounded of glory hole member 3 as the first burning portion 46 and the performance function.
The burner 1 of above explanation is provided with feature structure of the present invention, the i.e. first gas current detection means 65 (probe) and the second gas current detection means 66 (probe).Promptly, above the glory hole member 3 and in the first burning portion 46 that is clipped by opposed two air flow circuit members 5, on the position in the flame 24 that produces in when burning, dispose the first gas current detection means 65 along the length direction of burner 1.In addition, near as the bend 14 of the fore-end of air flow circuit member 5, dispose the second gas current detection means 66.The first gas current detection means 65 and the second gas current detection means 66 are fixed on the wall of the side at the moment of the paper that figure that the first burning portion 46 is separated do not show or opposite side.
Owing in flame, have the ion of combusting component, so have electric conductivity.The first gas current detection means 65 and the second gas current detection means 66 are to utilize the member of this character of flame.
At this, the first gas current detection means 65 connects the flame front of the high temperature of a flame 24, and its fore-end is configured in the inside of a flame 24.Owing to have the not gaseous mixture of combustion in the inside of a flame 24, so temperature is low.Therefore, the first gas current detection means, 65 bulk temperatures can be too not high.In addition, the second gas current detection means 66 is configured in leading section opening 21 (auxiliary air supply port) from bend 14 and supplies with near the position that the auxiliary air 67 of (injection) runs into (be leading section opening 21).Therefore, the second gas current detection means 66 is surrounded by auxiliary air 67, and can not be exposed in the secondary flame 68.
Therefore, can suppress the temperature rising of the second gas current detection means 66 by auxiliary air 67.The electrical connection that causes by flame of the first gas current detection means 65 and the second gas current detection means 66 when in addition, having cut off normal combustion by auxiliary air 67.That is, when normal combustion, owing between the first gas current detection means 65 and the second gas current detection means 66, do not have ionic current flow, so during with respect to the fuel gas quantity not sufficient, can detect abnormal combustion reliably in air capacity.
Fig. 5 is the cutaway view of the burner of Fig. 2.In Fig. 5, as mentioned above, show the first gas current detection means 65 and the second gas current detection means 66 and be configured in state on the burner 1.
With reference to Fig. 9～Figure 11, the program of using the first gas current detection means 65 and the second gas current detection means, 66 diagnosing combustion states is described.Fig. 9 be the expression first gas current detection means 65 and the second gas current detection means 66 output valve (microampere: μ A), with the curve map of the relation of the amount (ppm) of carbon monoxide CO.Figure 10 is the control system figure that is used to control the air capacity and the fuel gas scale of construction.In addition, Figure 11 is the flow chart of the fired state of diagnosing combustion device.
As shown in Figure 9, set the limits value of carbon monoxide CO discharge rate, make it be suitable for environmental standard.The limits value (critical value) that just makes this discharge rate is corresponding with poor (the μ A) of the output valve of the output valve of the second gas current detection means 66 and the first gas current detection means 65.
In Fig. 9, when normal combustion, because the ion that produces by burning in a flame 24 is more, so the output valve of the first gas current detection means 65 (gas current detected value) uprises.On the other hand, the major part of the second gas current detection means 66 is surrounded by auxiliary air 67, and ion generation around is few, even existence is also much lower than the output valve of the first gas current detection means 65 based on the output valve of secondary flame 68, the second gas current detection means 66 of the burning of carbon monoxide CO or hydrogen H.
If the air capacity of being supplied with by air blast 41 reduces for a certain reason and only, then the discharge rate of not firing composition in the first burning portion 46 increases.And, though owing to flame 24 elongations increase the part of being surrounded by unburned gaseous mixture that is arranged on first a gas current detection means 65 in the flame 24, but, ignition temperature decline reduces owing to making the ion concentration of a flame 24, so the output valve of the first gas current detection means 65 descends.
On the other hand, because the carbon monoxide CO composition that produces owing to lack of air in a flame 24 arrives the second gas current detection means 66, so the output valve of the second gas current detection means 66 rises.Therefore, reduce with the air capacity of supplying with by air blast 41 (air quantity) with the difference of the output valve of the output valve of the first gas current detection means 65 and the second gas current detection means 66 and increase.
Therefore, can be by experiment in advance, obtain operation values with the difference D (Fig. 9) of corresponding two output valves of limits value X of the concentration of emission of carbon monoxide CO.In advance this operation values is stored in the memory 76 that control device shown in Figure 10 69 had as critical value (standard value relevant with detecting output).
And CPU74 compares operation values and the critical value that is stored in the memory 76 being calculated by the difference of the first gas current detection means 65 and the second gas current detection means, 66 detected each output valve again.
Suppose that if operation values is littler than critical value, then to be judged to be the burning of burner 1 normal for control device 69.On the contrary, if operation values reaches critical value, the exclusive disjunction value surpasses critical value, then control device 69 is judged to be the abnormal combustion of burner 1.Judging that (diagnosis) is under the situation of abnormal combustion; thereby control device 69 is by increasing the air output of air blast 41; perhaps reduce the aperture of fuel gas supply valve 59 or fuel gas proportioning valve 18, reduce from the fuel gas scale of construction of nozzle shown in Figure 142 injections, thereby make burning normalization.At this, can make critical value have amplitude d, if entering into critical value zone (Fig. 9), operation values then is judged to be burning normally.That is, also can set the amplitude d of regulation, reach limits value X in operation values and be judged to be abnormal combustion in the past in the little side of carbon monoxide CO concentration ratio limits value X.
After being judged to be abnormal combustion at control device 69, taking above-mentioned measure, if burning is normal, then control device 69 is adjusted the aperture of air blasts 41 or fuel gas supply valve 59 or fuel gas proportioning valve 18, so that operation values can not reach critical value.Have again, also can replace, increase or reduce the air total amount of supplying with by air blast 41, perhaps adjust the distribution of the air capacity of distributing to first path described later, second path and Third Road footpath.In addition, also can adjust from the amount of the fuel gas of nozzle 42 injections.Then, if when control device 69 is judged to be abnormal combustion, remind the user to note, then promptly carry out suitable maintenance easily by the alarm lamp flicker is waited.
Flow chart with reference to Figure 11 describes above a succession of operation.
If burner 1 starts working, blower 41 at first then, then from nozzle 42 (Fig. 1) burner oil gas, generation gaseous mixture premixed member 2 in.Then, gaseous mixture by igniter 4 (Figure 10) thus above-mentioned primary combustion and second-time burning are carried out in igniting burning then.
Then, control device 69 is according to being calculated operation values (two output valves poor) by the first gas current detection means 65 and the second gas current detection means, 66 detected output valves, and operation values and the critical value that is stored in the memory 76 are compared.If operation values does not reach critical value (or critical value zone), then to be judged to be that burning is normal to control device 69.Control device 69 judges every official hour (for example 0.05 second～3 seconds interval, preferably 0.1 second～1 second interval) whether operation values reaches critical value at burner 1 duration of work then.Because if operation values reaches that critical value (or critical value zone) then burn is unusual, so control device 69 increases the air output that air blasts 41 are supplied with, or reduces the fuel gas scale of construction of supply.Then, further detect ionic current values (output valve) with the first gas current detection means 65 and the second gas current detection means 66, the calculation operations value confirms that fired state improves.If fired state fails to improve, then carry out this operation repeatedly up to improving.If fired state improves, whether then every is the judgement of " operation values＜critical value " through official hour, if burner 1 quits work, then this decision operation also finishes.
Though the control of the flow chart of Figure 11 is the action that poor (operation values) of output valve and critical value is compared and surpass in poor (operation values) of output valve the air output that increases air blast 41 under the situation of critical value etc., preferably under the situation that air output has excessively increased, make air output reduce to suitable amount.
In addition, under the situation of the quantity delivered that has excessively reduced fuel gas, preferably make the quantity delivered of fuel gas be increased to suitable amount.
For example, flow chart as shown in figure 13 is such, sets second critical value, under poor (operation values) situation less than second critical value of output valve, reduces the air output of air blast 41, or increases the quantity delivered of fuel gas.
In addition, Figure 13 is the flow chart that comprises fired state structure, the diagnosing combustion device of the control that reduces air output.
In addition, even increasing or reducing air output or increasing or reduce fuel gas, the output valve of the first gas current detection means 65 and the second gas current detection means 66 also not under the situation in suitable scope, preferably makes its burn-out.
Poor (operation values) that also can be arranged on the output valve of the first gas current detection means 65 and the second gas current detection means 66 surpasses the structure of sending certain alarm under the situation of critical value.
Below at length the function of such burner 1 with the first gas current detection means 65 and second gas current detection means 66 is described.
In shell shown in Figure 3 54, arrange a plurality of burners 1, in Fig. 1, see it is to blow from lower side by air blast 41.In addition, with the gas introduction port 43 importing fuel gas of nozzle 42 from premixed member 2.
At first, the air-flow to air-supply describes.The air-flow of air-supply is represented with fine rule in the drawings.
After the air-supply that is produced by air blast 41 is carried out rectification by the opening 45 of cowling panel 44, enter into the inside of burner 1 from the base end part (downside of figure) of burner 1.
The path that enters into the air-supply of burner 1 has 3.Promptly, first path is by the path in the air flow circuit member 5, air-supply imports opening 15 from the air of the base end part that is arranged on air flow circuit member 5 and enters in the air flow circuit member 5, makes in the inner air flow circuit 13 distolateral forward and directly over flowing to (downstream).And the most of of air open-ended 20,21 is discharged into the outside in the past.
In addition, the part of flow air in air flow circuit member 5 discharges with opening (upstream side discharges the air opening) 48 with opening 23 and release air from discharge air to burning portion.
22 discharge air to burning portion and discharge with respect to the axis of burner 1 air from the inclined plane to the inclination of oblique the place ahead with opening 23.
In addition,, flow in the gap 40 between air flow circuit member 5 and middleware 6, arrive the side surface part of glory hole member 3 from discharging air with opening (upstream side discharges the air opening) 48 air that discharge.
Second path is the path of passing through from middleware 6.That is, middleware 6 has opening row portion 10 with premixed member 2 and is clipped in structure between the side wall portion 31 and 32 of glory hole member 3.Between this opening row portion 10 and glory hole member 3, has the gap, the lower side in this gap (upstream side) opening and form peristome 28.Therefore, air enters from this peristome 28.
The air that enters from peristome 28 by side wall portion 31 and 32 and opening row portion 10 between the gap enter into blending space 39.Then, the space 47 between the end face 30 of arrival opening row portion 10 and glory hole member 3.That is, above-mentioned air flows through glory hole upstream side stream 49.And, air from glory hole 33, be that slit is discharged into the first burning portion 46.In addition, the part of air that enters into space 47 enters into space 29 between body member 25 and side wall portion 31 or 32 from the opening 35 on the side wall portion 31 and 32 that is arranged on body member 25, and side opening 27 is discharged into the first burning portion 46 from the side.
Below the Third Road of air is directly described.Third Road directly is the path of primary air, imports with the gas introduction port 43 of fuel gas from premixed member 2.Owing to the path that Third Road footpath and fuel gas (gaseous mixture) are mobile is identical, so the air-flow with fuel gas describes below.The air-flow of fuel gas is represented with the arrow of solid line.
From the gas introduction port 43 of premixed member 2 fuel gas is imported with primary air.Fuel gas mixes with air in mixing portion 7 grades, flow into opening row portion 10.Owing in opening row portion 10 linearity ground alignment arrangements a plurality of openings 8 are arranged, so the fuel gas (gaseous mixture) that enters into opening row portion 10 discharges equably from each opening 8.The fuel gas (gaseous mixture) that discharges from opening row portion 10 enters into the blending space 39 that forms between the side wall portion 31,32 of glory hole member 3 and opening row portion 10, mixes arrival glory hole upstream side stream 49 with air in second path flow.
At this, above-mentioned air in second path flow flows to the short transverse (from bottom to top) of burner 1, and flows to the direction vertical with air draught from the fuel gas (gaseous mixture) that the opening 8 of opening row portion 10 discharges.Therefore, the fuel gas (gaseous mixture) that discharges from the opening 8 of opening row portion 10 collides intensely at blending space 39 and air, promotes itself and Air mixing.In addition, owing to blending space 39 is communicated with on the whole length direction of opening row portion 10, so pressure is smoothing also.
Though fuel gas (gaseous mixture) flow in the space 47 by blending space 39, even also can promote fuel gas (gaseous mixture) and Air mixing during this period.And, after this identical with the air-flow of above-mentioned glory hole upstream side stream 49, enter into the space 47 between top 30 parts of opening row portion 10 and glory hole member 3, most parts from glory hole 33, be that slit is discharged into the first burning portion 46.In addition, the part of air that has entered into space 47 enters into the space 29 of reducing pressure between wall 26 and the side wall portion 31,32 from the opening 35 on the side wall portion 31,32 that is arranged on body member 25, and side opening 27 is discharged into the first burning portion 46 from the side.
The fuel gas (gaseous mixture) that discharges from glory hole 33 mixes with air premixed member 2, owing to further blending space 39 in, mix with the air of coming from second path flow, thus even, and the speed when glory hole 33 discharges is also even.
But though the fuel gas (gaseous mixture) that discharges from glory hole 33 is mixing air, air capacity does not reach theoretical air requirement.The fuel gas (gaseous mixture) that discharges from glory hole 33 can not carry out completing combustion under the state of lack of air.
If to fuel gas (gaseous mixture) igniting, then fuel gas produces a flame 24 in the first burning portion 46, carries out primary combustion.But as mentioned above, fuel gas is the state of lack of air, so can not carry out completing combustion, generates many compositions that do not fire.
Do not fire composition and be discharged into the outside from the opening of the first burning portion 46.At this, air supplies to the outside of the first burning portion 46 from the leading section (leading section opening 21) of air flow circuit member 5.Therefore, not firing composition accepts the supply of oxygen (auxiliary air 67) and carries out second-time burning.That is, function is brought into play as the second burning portion in the zone in the first burning portion, 46 outsides, produces secondary flame 68.
In addition, in the present embodiment, air supplies to the base end part of an above-mentioned flame 24, at the base end part generation booster flame of a flame 24.
At present embodiment, fuel gas not only from " central portion opening ", be that glory hole 33 is discharged into the first burning portion 46, fuel gas also from the side side opening 27 be discharged into the first burning portion 46.But, from the side the velocity ratio of the fuel gas that discharges of side opening 27 from " central portion opening ", be that the flow velocity of the fuel gas that discharges of glory hole 33 is slow.That is, the opening 35 of fuel gas from the side wall portion 31,32 that is arranged on body member 25 that discharge of side opening 27 enters into the space 29 between decompression wall 26 and the side wall portion 31,32 from the side, and side opening 27 is discharged into the first burning portion 46 from the side.Therefore, the amount that enters into the fuel gas in space 29 is limited.Therefore, the amount of the fuel gas that discharges of side opening 27 is few from the side.Yet, because the aperture area of side opening 27 is big, so the flow velocity of the fuel gas that discharges of side opening 27 is slack-off from the side.
Have again, as mentioned above, first path, be that the part of air passed through in the air flow circuit member 5 is from discharging air with opening (upstream side discharges the air opening) 48 gaps 40 that are discharged between air flow circuit member 5 and the middleware 6, the side surface part of arrival glory hole member 3.Therefore, compare with other position, the amount of oxygen of the side surface part of glory hole member 3 is abundant, and the fuel gas (gaseous mixture) that discharges of side opening 27 receives the air ratio supplied with than burn steadily from the side.
As mentioned above, add that again the flow velocity of fuel gas is low, near the stable flame of generation side opening 27.Therefore, the base end part of a flame 24 is kept by near the flammule of generation side opening 27.
In addition, in the present embodiment, by making secondary flame 68 stabilisations from the air that discharges with opening 23 to burning portion release air.That is, in the present embodiment,, on the position of the cardinal extremity part that is equivalent to the first burning portion 46, has inclined plane 22 at surface 11, the back side 12 of air flow circuit member 5.Discharge air with opening 23 owing on this inclined plane 22, be provided with, so the direction air supply that tilts to direction of advance from the cardinal extremity part of the first burning portion 46 with respect to air to burning portion.Therefore, the air of supply does not hinder flowing of flame 24 or unburned gas, is fed in the first burning portion 46.Consequently, the part of the unburned gas in the first burning portion 46 takes fire, and a part produces secondary flame.And, owing to this secondary flame links to each other with the secondary flame 68 of outside, so also stablized the secondary flame 68 that externally produces.
In addition, in the present embodiment, discharge air opening 23 adipping openings to burning portion.Therefore, as mentioned above, can not hinder the mobile of flame 24 or unburned gas from discharge air that air discharges with opening 23 to burning portion.Consequently, on away from the position of air flow circuit member 5, stably produce secondary flame 68, not heated air flow road member 5 exceedingly.
Therefore, the burner 1 of present embodiment is all stablized flame 24 and secondary flame 68, and is very practical.
The first gas current detection means 65 and the second gas current detection means 66 are arranged on carries out primary combustion under the oxygen state, further air supply and carrying out on the burner of two-stage combustion form of second-time burning.
Below, with reference to the accompanying drawing below Fig. 2 practical more structure example of the present invention is described.Fig. 2 is the stereogram of the burner of practical embodiment of the present invention.Fig. 3 is the vertical view that expression is housed in a plurality of burners shown in Figure 2 state in the shell.In addition, Fig. 4 is the IV-IV cutaway view of Fig. 3.Below illustrated embodiment, the actual design in order to implement the present invention is to want the structure of recommending most.
Though the basic structure and the basic function of the burner shown in the drawings that Fig. 2 is following are same as the previously described embodiments, aspect details, implement practical design.Mark identical Reference numeral to bringing into play with the member of previous embodiment identical functions, the function of repetition is only carried out simple explanation.
Shown in Fig. 3,4, burner 1 shown in Figure 2 is to be arranged side by side in the shell 54 to use.Even for the burner 1 of present embodiment, also have premixed member 2, glory hole member 3, air flow circuit member 5.And, become premixed member 2 and glory hole member 3 tablings and constitute a middleware 6, this middleware 6 is clipped in two structures between the air flow circuit member 5.
On the zone at 3 places on the air flow circuit member 5, be provided with and discharge the opening that air is used.
Be provided with the zone that discharges the opening that air uses be divided into leading section haply, towards the position of the first burning portion 46 with towards the position of middleware 6.
Burner for the above-described, though suitably distribute fuel gas and air ideally, make their produce stable flame 24 and secondary flame 68, but break down at air blast 41 and make under the situation that air output reduced, the ratio (equivalent proportion) of the fuel gas scale of construction and air capacity (amount of oxygen) can change, and fired state can worsen.But, in burner 1 of the present invention, can detect the unusual of fired state reliably according to by the first gas current detection means 65 and the second gas current detection means, 66 detected ionic current values (output valve).In addition, if in secret room, make burner 1 work,,,, then still can detect the unusual of fired state at once if implement burner of the present invention even under these circumstances though airborne oxygen partial pressure reduces (oxygen minimizing).Therefore, detecting when unusual, reducing the aperture of fuel gas proportioning valve 18 or fuel gas supply valve 59 at once, increasing the air output of air blast 41, or reducing the fuel gas scale of construction, thereby can make burning normalization by control device 69.
More than explanation be arranged on the first gas current detection means 65 on the burner and the second gas current detection means 66 except rectilinear form, also can adopt the crooked or folding of fore-end for example shown in Figure 8 to bend shape.At this, Fig. 8 be dispose different gas current detection means burner dissect stereogram.If make the crooked or bending of fore-end, then can detect the state of flame 24 or secondary flame 68 more reliably.
For example, the first gas current detection means 65 crooked or (bending) fore-end 65a that folding is bent be towards the direction of slit (glory hole 33) (below, be upstream side), the second gas current detection means 66 crooked or (bending) fore-end 66a that folding is bent towards the upstream side of the central side of the first burning portion 46 (promptly, being formed with the zone of flame 24 or secondary flame 68) some.
Promptly, when a flame 24 floats because of lack of air, if make the crooked or folding of the fore-end 66a of the second gas current detection means 66 bend (it is being bent) in advance,, also can detect the come-up of this flame 24 reliably even under the little situation of then little, flame 24 in quantity combusted.In addition, if make the fore-end 66a of the second gas current detection means 66 to the bending of the top of level, then owing to weakened above-mentioned effect, so towards the central authorities of a flame 24, compare, make it more can bring into play above-mentioned effect to the bending of the below of horizontal plane with making its bending on horizontal plane.
But if make it to the bending of the below of horizontal plane, then the distance between fore-end 66a and the auxiliary air supply port shortens.Therefore, consider to exist 66 meetings of the second gas current detection means downwards, preferably make its central portion bending on horizontal plane to a flame 24 because of the high sagging possibility of abnormal combustion temperature.
Though more than show near the auxiliary air spout (leading section opening 20,21,63,64) that the second gas current detection means 66 is arranged on the fore-end of air flow circuit member 5 example, but also it can be arranged near burning portion release air usefulness opening 23 as shown in figure 12.At this, Figure 12 is the stereogram that dissects that the position burner different with implementing Fig. 1 of the present invention, Fig. 8 is set of the second gas current detection means.If the second gas current detection means 66 is arranged near burning portion release air usefulness opening 23, then owing to surrounded with the auxiliary air that opening 23 supplies to the second gas current detection means 66 from discharging air to burning portion, so, be not exposed to the rising that yet can suppress temperature in the flame.Therefore, can avoid 66 high temperature deformations of the second gas current detection means.In addition, owing to be blown on the second gas current detection means 66 from the auxiliary air 67a that supplies with opening 23 to burning portion release air, so, ion in the flame does not arrive the second gas current detection means 66, have again, though the first gas current detection means 65 and the second gas current detection means 66 are quite approaching on short transverse, also can prevent both conductings, can detect the deficiency of air capacity reliably.Therefore, can detect the abnormal combustion of burner 1 reliably.
Figure 14 be used for schematically illustrating the second gas current detection means be provided with the position different with Fig. 1, Fig. 8 and dispose the first gas current detection means different with Fig. 1, Figure 12 burner structure, burner dissect stereogram.In burner shown in Figure 14 1, the second gas current detection means 66 is configured near burning portion release air usefulness opening 23 (auxiliary air supply port), structure in addition is identical with the structure of burner shown in Figure 11.In example shown in Figure 14, the crooked downwards as described above or bending of the fore-end of the first gas current detection means 65.
In addition, in the present embodiment, discharging air to burning portion uses opening 23 to the direction opening that tilts, as mentioned above, because auxiliary air 67a does not hinder flowing of flame 24 or unburned gas, so secondary flame 68 produces on the position away from air flow circuit member 5, heated air flow road member 5 exceedingly not.Have, auxiliary air 67a runs into the second gas current detection means, 66, the second gas current detection means 66 and is cooled again.
Therefore, the burner 1 of present embodiment is all stablized flame 24 and secondary flame 68, can also detect fired state reliably, and is very practical.
Burner of the present invention can be arranged on the hot water supply apparatus or the device of having a bath etc. needs the enterprising enforcement of device of heating to use.
Claims (13)
1. burner, this burner make the gaseous mixture of the not enough state of oxygen that primary air and fuel gas mix carry out primary combustion, accept the supply of auxiliary air again and carry out second-time burning, it is characterized in that,
In the flame of above-mentioned primary combustion, be provided with the first gas current detection means, and near supplying with the auxiliary air supply port of above-mentioned auxiliary air, be provided with the second gas current detection means, control the air supplied with and at least one in the fuel gas according to the detected value of two gas current detection means.
2. burner according to claim 1 is characterized in that,
The total amount of ratio, primary air amount and the auxiliary air amount of control primary air amount and auxiliary air amount and at least one in the fuel gas scale of construction.
3. burner according to claim 1 is characterized in that,
Have premixed member, air flow circuit member and glory hole member, above-mentioned premixed member imports fuel gas and generates the gaseous mixture of the not enough state of oxygen with primary air, above-mentioned air flow circuit member is the wall shape and has the auxiliary air supply port of feeding secondary air in its front, and above-mentioned glory hole member is configured between two air flow circuit members or between above-mentioned air flow circuit member and other wall; By being formed burning portion by the space of glory hole member and the encirclement of air flow circuit member, above-mentioned gaseous mixture is discharged into burning portion and carries out primary combustion from the glory hole member, accepts the supply of auxiliary air and carries out second-time burning from the auxiliary air supply port of air flow circuit member again.
4. burner, this burner make the gaseous mixture of the not enough state of oxygen that primary air and fuel gas mix carry out primary combustion, accept the supply of auxiliary air again and carry out second-time burning, it is characterized in that,
In the flame of above-mentioned primary combustion, be provided with the first gas current detection means, base portion at the flame of above-mentioned primary combustion is provided with the air supply hole of supplying with the air different with primary air, near above-mentioned air supply hole, be provided with the second gas current detection means, control the air supplied with and at least one in the fuel gas according to the detected value of two gas current detection means.
5. according to each described burner in the claim 1,2,4, this burner has premixed member, air flow circuit member and glory hole member, above-mentioned premixed member imports fuel gas and generates the gaseous mixture of the not enough state of oxygen with primary air, above-mentioned air flow circuit member is the wall shape and has the auxiliary air supply port, and above-mentioned glory hole member is configured between two air flow circuit members or between above-mentioned air flow circuit member and other wall; By being formed burning portion by the space of glory hole member and the encirclement of air flow circuit member, above-mentioned gaseous mixture is discharged into burning portion and carries out primary combustion from the glory hole member, it is characterized in that,
Above-mentioned auxiliary air supply port is arranged on the base portion of the flame of above-mentioned primary combustion.
6. according to each described burner in the claim 1～4, it is characterized in that,
Make at least one the crooked or bending in the fore-end of the fore-end of the first gas current detection means and the second gas current detection means.
7. according to each described burner in the claim 1～4, it is characterized in that,
Have memory, this memory stores is corresponding with the limits value of carbon monoxide emission concentration, with the relevant a reference value of difference of the detection output that detects by the first gas current detection means and the second gas current detection means.
8. burner according to claim 7 is characterized in that,
Above-mentioned value has been set the regulation amplitude.
9. burner according to claim 7 is characterized in that,
To comparing by the operation values of the difference of the first gas current detection means and detected each output valve of the second gas current detection means and the value that is stored in the above-mentioned memory.
10. burner according to claim 9 is characterized in that,
Than being stored under the big situation of value in the memory, increase the quantity delivered of air in above-mentioned operation values, and/or reduce the quantity delivered of fuel gas.
11. burner according to claim 3 is characterized in that,
The path of passing through as air have first path in the above-mentioned air flow circuit member, from above-mentioned premixed member between the glory hole member to second path of burning portion and the Third Road footpath that air and fuel gas are flow through, from above-mentioned first path and the second path feeding secondary air, directly import primary air from above-mentioned Third Road;
Have memory, this memory stores is corresponding with the limits value of carbon monoxide emission concentration, with the relevant a reference value of difference of the detection output that detects by the first gas current detection means and the second gas current detection means;
To comparing by the operation values of the difference of the first gas current detection means and detected each output valve of the second gas current detection means and the value that is stored in the above-mentioned memory;
Than being stored under the big situation of value in the memory, increase quantity delivered in above-mentioned operation values by the auxiliary air in above-mentioned first path and second path.
12. according to each described burner in the claim 1～4, it is characterized in that,
Air is blown on the second gas current detection means.
13. burner according to claim 5 is characterized in that,
The path of passing through as air have first path in the above-mentioned air flow circuit member, from above-mentioned premixed member between the glory hole member to second path of burning portion and the Third Road footpath that air and fuel gas are flow through, from above-mentioned first path and the second path feeding secondary air, directly import primary air from above-mentioned Third Road;
Have memory, this memory stores is corresponding with the limits value of carbon monoxide emission concentration, with the relevant a reference value of difference of the detection output that detects by the first gas current detection means and the second gas current detection means;
To comparing by the operation values of the difference of the first gas current detection means and detected each output valve of the second gas current detection means and the value that is stored in the above-mentioned memory;
Than being stored under the big situation of value in the memory, increase quantity delivered in above-mentioned operation values by the auxiliary air in above-mentioned first path and second path.
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| JP2006124293 | 2006-04-27 | ||
| JP2006124293A JP2007298190A (en) | 2006-04-27 | 2006-04-27 | Combustion device |
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| CN101063522A true CN101063522A (en) | 2007-10-31 |
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| CNA2007100976339A Pending CN101063522A (en) | 2006-04-27 | 2007-04-24 | Combustion apparatus |
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| US (1) | US20070251467A1 (en) |
| JP (1) | JP2007298190A (en) |
| CN (1) | CN101063522A (en) |
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| CN103615798A (en) * | 2013-11-04 | 2014-03-05 | 广东万和新电气股份有限公司 | Fully premixed combustion gas heating water heater |
| CN107655029A (en) * | 2017-11-03 | 2018-02-02 | 广东摩德娜科技股份有限公司 | The coefficient of excess air management system of kiln |
| CN108571825A (en) * | 2017-03-08 | 2018-09-25 | 青岛经济技术开发区海尔热水器有限公司 | A kind of control method, control device and gas heater that filter device blocks |
| CN111912110A (en) * | 2020-08-06 | 2020-11-10 | 华帝股份有限公司 | Burner, gas heat exchange equipment and combustion control method |
| CN114396621A (en) * | 2021-12-22 | 2022-04-26 | 重庆海尔热水器有限公司 | Fire grate, combustor and gas water heater |
| CN114396620A (en) * | 2021-12-22 | 2022-04-26 | 重庆海尔热水器有限公司 | Combustor and gas water heater |
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| WO2007086146A1 (en) * | 2006-01-30 | 2007-08-02 | Noritz Corporation | Combustion apparatus |
| US20110223549A1 (en) * | 2010-05-31 | 2011-09-15 | Resource Rex, LLC | Laminar Flow Combustion System and Method for Enhancing Combustion Efficiency |
| US20120216797A1 (en) * | 2011-02-25 | 2012-08-30 | Lennox Hearth Products LLC. | Baffle for a fireplace |
| JP6632226B2 (en) * | 2015-06-12 | 2020-01-22 | 三菱日立パワーシステムズ株式会社 | Burner, combustion device, boiler and burner control method |
| US10344968B2 (en) * | 2017-05-05 | 2019-07-09 | Grand Mate Co., Ltd. | Gas mixer |
| IT202100023330A1 (en) * | 2021-09-09 | 2023-03-09 | Polidoro S P A | PLATE GAS BURNER WITH LOW EMISSION OF POLLUTANTS |
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- 2007-04-10 US US11/783,461 patent/US20070251467A1/en not_active Abandoned
- 2007-04-23 DE DE102007019086A patent/DE102007019086A1/en not_active Withdrawn
- 2007-04-24 CN CNA2007100976339A patent/CN101063522A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103615798A (en) * | 2013-11-04 | 2014-03-05 | 广东万和新电气股份有限公司 | Fully premixed combustion gas heating water heater |
| CN108571825A (en) * | 2017-03-08 | 2018-09-25 | 青岛经济技术开发区海尔热水器有限公司 | A kind of control method, control device and gas heater that filter device blocks |
| CN107655029A (en) * | 2017-11-03 | 2018-02-02 | 广东摩德娜科技股份有限公司 | The coefficient of excess air management system of kiln |
| CN111912110A (en) * | 2020-08-06 | 2020-11-10 | 华帝股份有限公司 | Burner, gas heat exchange equipment and combustion control method |
| CN114396621A (en) * | 2021-12-22 | 2022-04-26 | 重庆海尔热水器有限公司 | Fire grate, combustor and gas water heater |
| CN114396620A (en) * | 2021-12-22 | 2022-04-26 | 重庆海尔热水器有限公司 | Combustor and gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007019086A1 (en) | 2007-11-22 |
| JP2007298190A (en) | 2007-11-15 |
| US20070251467A1 (en) | 2007-11-01 |
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