CN213577479U - Combustion part and combustor - Google Patents
Combustion part and combustor Download PDFInfo
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- CN213577479U CN213577479U CN202022511767.4U CN202022511767U CN213577479U CN 213577479 U CN213577479 U CN 213577479U CN 202022511767 U CN202022511767 U CN 202022511767U CN 213577479 U CN213577479 U CN 213577479U
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Abstract
The utility model provides a combustion part and combustor, including the main frame body with surely fire the median, surely fire the median and divide the main frame body inside into two at least regions of ventilating along the gas passage direction, all be equipped with partition mechanism in each region of ventilating, partition mechanism will ventilate the region and divide into a plurality of through-holes of arranging along the gas passage direction, the long through-hole is used for the gas mixture through gas and air and strengthens the mixed effect of the two, surely fire the median and can separate the burning flame of main frame body combustion face for mutually independent individual flame. The utility model discloses a microporous structure has strengthened the mixed degree of gas and air promptly, makes the burning more abundant, also can keep the one-way transmission of flame, has the effect of fire-retardant anti-backfire, simultaneously, surely fires the median and plays the effect of stable combustion flame, and it will ventilate after the region is cut apart, and the flame between the adjacent hole forms shapes such as pyramid or taper, and each ventilation area after the separation independently burns, and the burning is more stable, and the pollutant of emission still less.
Description
Technical Field
The utility model relates to a combustion apparatus technical field especially relates to a burning part and combustor.
Background
The burner is a general term for a device for ejecting fuel and air in a certain manner to perform mixed combustion. The burners are classified into industrial burners, civil burners and special burners according to types and application fields. Commonly used household burners include gas boilers, gas ranges, high fire gas ranges, infrared gas ranges, and combustion heads of gas water heaters.
The power of the gas boiler is more than 200kW, and the gas is sprayed out from the small hole, mixed with air blown into the large cylinder by the fan, and ignited to form integral cylindrical conical flame. The traditional burner head is formed by mixing fuel gas with air in a combustion disc and igniting the fuel gas, belongs to diffusion flame combustion, and has the advantages of simple structure, mature technology, low cost and high emission concentration of CO and NOx. The main body of the full-premixing metal fiber surface combustion head is a temperature-resistant metal fiber net, a full-premixing fan and a valve group are required to be matched for use, the flame length is shortened, the local high temperature is avoided, the combustion time is reduced, so that the nitrogen reduction is realized, although the emission concentration of CO and NOx is low, the cost is high, and the risk of blockage and tempering of a combustor exists; the staged combustion head (dense-dilute combustion head) introduces air or fuel into a furnace in multiple stages to complete combustion, reduces generated NOx into N2 by manufacturing reducing atmosphere to realize nitrogen reduction, and has the advantages of relatively complex structure, mature technology, higher cost, limited nitrogen reduction effect (difficult to achieve ultra-low emission) and high CO emission concentration.
The power of the gas stove is 3-5kW, the pipeline gas is ejected from the small holes arranged on the inner disc and the outer ring after ejecting air, and the flame is divided into two layers after ignition: the fuel gas and the injected air form rich-combustion premixed combustion flame inside; the residual fuel forms a diffusion combustion flame with ambient air on the outside. The traditional cooking range is characterized in that gas is used for injecting primary air into a cooking range structure and mixing the primary air, premixed gas is ignited and then contacts with secondary air through diffusion to complete a combustion process, and the traditional cooking range is simple in structure, mature in technology and low in cost, but is low in heat efficiency and high in emission concentration of CO and NOx; the combustion plate of the infrared stove is a porous ceramic plate, gas injects air to enter the stove head for mixing, the ceramic plate is heated by flame combustion to convert into infrared combustion, but the ceramic is easy to damage, the combustion-supporting gas is insufficient, the combustion is easy to be insufficient, the cost is high, the heat efficiency is high, and the emission concentration of NOx and CO is high; the burner structure of the high fire stove has no special part, requires high gas pressure, generally injects combustion-supporting air and provides combustion-supporting air by a fan, and the like, has simple structure, mature technology and low cost, but has low thermal efficiency and high emission concentration of CO and NOx.
The power of the strong fire stove is 5-30 kW; after the gas in the pipeline and the air blown out by the fan are mixed in the pipeline, the gas is sprayed out from the holes arranged on the inner disc and the outer ring, and after ignition, oxygen-enriched flame is formed, so that the firepower is strong, the temperature is high, but the combustion is uneven, and the emission of CO and NOx is high.
The power of the infrared stove is 3-5 kW; after the gas in the pipeline is used for ejecting air and ignited from the honeycomb disc, the flame retracts into a honeycomb pore channel to carry out short flame combustion, the heated honeycomb body forms a high-temperature heat accumulator to emit infrared rays for heating, and the infrared burner is basically the same as the infrared stove in structure and characteristics, mainly burns in the pore channel, has limited power and is easy to damage.
The power of the water heater and the wall-mounted furnace is 20-70 kW; the fuel gas and part of air blown by the fan enter the fire grate and are sprayed out from the small holes, after ignition, rich-combustion premixed flame is formed, and the fuel which is not completely combusted and the rest of air sprayed out from the fire grate gap are continuously subjected to diffusion combustion. In the traditional pipe type fire grate, the gas injects primary air to enter a pipe structure and mix, and the premixed gas is ignited and then contacts with secondary air through diffusion to complete the combustion process, so that the structure is simple, the technology is mature, the cost is low, but the emission concentration of CO and NOx is high; the fire grate structure of the thick and thin fire grate is similar to a pipe type fire grate, and NOx is reduced into N by producing reducing atmosphere through staged combustion2The purpose of reducing nitrogen is achieved, but the structure is complex, the cost is high, and although the NOx emission concentration is low, the CO emission concentration is high; the water-cooling fire grate mainly comprises a transmission pipeThe combination of the fire grate and the water-cooling copper pipe is unified, the flame temperature is reduced through heat exchange to realize nitrogen reduction, the technology is mature, the cost is high, the NOx emission concentration is low, but the structure is complex, and the CO emission concentration is high; the main body of the full premix metal fiber surface burner is a temperature-resistant metal fiber net, a full premix fan and a valve group are required to be matched for use, local high temperature is avoided by shortening flame length, combustion time is reduced to reduce nitrogen, and although NOx and CO emission concentration is low, the full premix metal fiber surface burner has the defects of high cost and burner blockage and backfire risks.
The publication No. CN 108006629 a, "burner and gas water heater with the same", discloses a burner with a first rich combustion chamber, a second rich combustion chamber and a lean combustion chamber, however, only one flame is actually formed in one of the combustion units, the middle part of the flame is lean combustion flame, the two sides are rich combustion flames, the unburned fuel of the rich combustion flames and the surplus oxygen of the lean flame are collected at the tail end of the flame and then are subjected to secondary combustion, and the first blind road and the second blind road are arranged to play a role in separating the rich flame from the lean flame, and cannot separate the whole flame.
In conclusion, the existing mature technology of the combustion assembly with low manufacturing cost has high pollutant emission and is not beneficial to environmental protection; the technology with relatively low pollutant discharge is not beneficial to popularization due to overhigh manufacturing cost.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problems, a combustion member and a burner having a good combustion effect and a low cost and emitting less pollutants are provided. The utility model discloses a technical means as follows:
the utility model provides a combustion part, includes main frame body and at least one steady burning median, the steady burning median divides the main frame body inside into two at least regions of ventilating along the gas passage direction, all is equipped with a plurality of partition mechanisms in each region of ventilating, partition mechanism will ventilate the region and divide into a plurality of through-holes of arranging along the gas passage direction, the long through hole is used for the gas mixture through gas and air and strengthens the mixed effect of the two, the steady burning median can separate the burning flame of main frame body combustion face for mutually independent individual flameWidth D of the stable combustion isolation zone1The total length of 3-10 through holes.
Furthermore, the stable combustion isolation belt is attached to the surface of the main frame body, or penetrates through the thickness direction of the main frame body, or extends into the main frame body for a preset length.
Furthermore, the stable combustion isolation belt is fixed on the main frame body, and the ventilation area is embedded in the main frame body; or the ventilation area is fixed on the main frame body, and the stable combustion isolation belt is attached to the main frame body; or the ventilation area is fixed on the stable combustion isolation belt, and the ventilation area and the stable combustion isolation belt are integrally fixed on the main frame body, or the whole structure is integrally formed.
Further, the cross-sectional area S of the single through-holeHole(s)Is 0.1mm2≤SHole(s)≤9mm2。
Further, the stable combustion isolation belt is continuous or discontinuous, and the width D of the discontinuous section2The total length of 1-2 through holes.
Furthermore, the width D of the stable combustion isolation belt is larger than or equal to 2mm and smaller than or equal to 50 mm.
Further, the ventilation area is embodied as a continuous combustion hole, and the cross-sectional area Sn of the area satisfies 30mm2≤Sn≤22500mm2。
Further, the wall thickness of the holes, i.e. the thickness of the separating means, is 0.03 mm. ltoreq. dHole(s)Not more than 3mm, and the wall thickness of the main frame body is not less than 0.03mm and not more than dOuter cover≤50mm。
Furthermore, the thickness/height h of the main frame body satisfies that h is more than or equal to 4mm and less than or equal to 1000 mm.
A burner has the combustion component.
The utility model discloses the power of burning part can be along with the change of combustor area, and the air that gas and fan were blown gets into behind the micropore passageway by high misce bene, lights from micropore passageway blowout after and forms even premixed flame, and the setting up of median makes mutual independence between the flame, and flame after the partition forms type pyramid shape (flame personally submits hollow toper), and flame is more stable, effectively avoids forming the indefinite even flame that floats, and the burning is stable, the utility model discloses a micropore hole density is great, and the aperture receives the restriction, and the confined space in the aperture has the rectification effect, can carry out fine mixture with gas and air, and CO and NOx discharge all very low, below 10ppm, and is clean high-efficient, and the setting of aperture has the function of preventing backfire simultaneously. The micro-channel structure in the field of catalyst carriers is applied to the field of combustion, the large-scale reconstruction of the existing appliance is not needed, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a simple structure according to embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a simple structure according to embodiment 2 of the present invention.
Fig. 3 is a schematic diagram of a simple structure according to embodiment 3 of the present invention.
Fig. 4 is a schematic diagram of a simple structure according to embodiment 4 of the present invention.
Fig. 5 is a schematic structural diagram of a burner according to an embodiment of the present invention.
Fig. 6 is a comparison diagram of the present invention applied to the embodiment of the present invention and the prior art.
Fig. 7 is the embodiment of the present invention, schematically showing the discontinuous state of the stable combustion isolation belt.
1. A housing; 2. an air distributor; 3. a microchannel rectifier; 4. a microchannel rectification burner; 5. an ignition needle; 6. an air inlet; 7. a first gas pressure equalizing and mixing chamber; 8. a second gas pressure equalizing and mixing cavity; 9. a flame; 11. a main frame body; 12. a through hole; 13. stably burning the isolation belt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a combustion part, including main frame body 11 and at least one steady median 13 that fires, the steady median of firing divides the main frame body inside into two at least regions of ventilating along the gas passage direction, all is equipped with a plurality of partition mechanisms in each region of ventilating, partition mechanism will ventilate the region and divide into a plurality of through-holes 12 of arranging along the gas passage direction, the slot hole is used for the gas mixture through gas and air and strengthens the mixed effect of the two, the steady median of firing can separate the burning flame of main frame body combustion face for mutually independent individual flame.
The specific structure forming method of the utility model comprises a plurality of methods, such as the stable combustion isolation belt is fixed on the main frame body, and the ventilation area is embedded in the main frame body; or the ventilation area is fixed on the main frame body, and the stable combustion isolation belt is attached to the main frame body; or the ventilation area is fixed on the stable combustion isolation belt, and the ventilation area and the stable combustion isolation belt are integrally fixed on the main frame body, or the whole structure is integrally formed.
In the process that the air feeder/exhaust fan inputs fuel gas into a gas channel in the main frame body, air inlet exists in a plurality of directions, if the area of a ventilation area is too large, flame connection phenomenon is easy to occur, so that a single ventilation area with a small enough area needs to be ensuredHole(s)Is 0.1mm2≤SHole(s)≤9mm2According to the different or other factors that probably influence of manufacturing process, there is certain defective percentage, the hole is not of uniform size, or wherein the specification in the hole of certain quantity surpasss the utility model discloses the scope of recording all can be deeming to be in the utility model discloses in the protection scope. The thickness/height h of the ventilation area satisfies that h is more than or equal to 4mm and less than or equal to 1000mm, the heights of different through holes can be the same or different, and the upper surface and the lower surface can beThe gas-gas mixing device is planar or non-planar, but the gas-gas mixing device is limited by the pore volume after gas and air mixture enters the micropores, and the mixed gas can be continuously collided and mixed in the pore walls of the micropores, so that the output end of a gas channel and the gas output direction are straight lines, the micropores play a role in mixing and rectifying, and the combustion efficiency of flame is further enhanced.
The width D of the stable combustion isolation belt is larger than or equal to 2mm and smaller than or equal to 50 mm.
The ventilation area is embodied as a continuous combustion hole with a cross-sectional area Sn of 30mm2≤S(n)≤22500mm2。
The thickness of the hole wall, i.e. the thickness of the separating means, is not less than 0.03mmHole(s)Not more than 3mm, and the wall thickness of the main frame body is not less than 0.03mm and not more than dOuter cover≤50mm。
Fig. 1 shows the shape of the combustion component of example 1, the main frame body is rectangular, the internal combustion stabilizing isolation strip is in a long strip shape, the rectangular interior is divided into a plurality of uniform areas, the flames of adjacent hole pieces are changed into pyramid shapes (the flames are in hollow conical shapes), as shown in fig. 7, in other alternative embodiments, the areas divided in the rectangular interior can be unequal in area, and the combustion stabilizing isolation strip can also be discontinuous, but it is required to ensure the width D of the combustion stabilizing isolation strip1The total length of 3-10 through holes and the width D of a discontinuous section2The total length of 1-2 through holes. The spacer may be linear as shown or may be of other regular or irregular shape, but it is desirable to have a spacer.
Fig. 2 shows the shape of the combustion part of example 2, in which the main frame is circular, the combustion stabilizing isolation zone at the center is circular, and the outer circle is connected with the main frame through a plurality of combustion stabilizing isolation zones to divide the region into preset shapes.
Fig. 3 shows the shape of the combustion part of example 3, the main frame body of which is circular and the inside of which is divided by a plurality of stable combustion isolation belts.
FIG. 4 shows the shape of the combustion part of example 4, in which the main frame is circular, the ventilation area is annular, and the inside is divided by a plurality of stable combustion isolation zones.
The arrangement of the stable combustion isolation strip includes various arrangements, such as being attached to the surface of the main frame body, or penetrating through the thickness direction of the main frame body, or extending into the main frame body for a preset length, and the main objective is to separate the main frame body, and the spiral action of the fan makes the output wind flow fast in the local area and slow in the local area during the process of inputting the fuel gas into the gas channel in the main frame body, so that the flame will not be completely combusted, and the stable combustion isolation strip is arranged to separate the main frame body into a plurality of blocks, although the adjacent block combustion power is still different, the adjacent flame can not be affected, and the stable combustion can be realized, as can be seen from the comparison chart of fig. 6, the utility model discloses the combustion flame is blue, and the adjacent flame is stably combusted, fig. 6 also shows the pollutant discharge amount measured by the experiment, at present, the emission standard of China for gas-fired boilers is that the emission of nitrogen oxides is less than or equal to 200mg/m3The standard of some regions is higher, such as less than or equal to 80mg/m3、≤30mg/m3The emission of nitrogen oxides is less than or equal to 15mg/m3The whole low in cost, pollutant emission is less simultaneously, in actual production life, the utility model discloses can be applied to the multiple field that relates to the gas, like gas-cooker, gas heater, gas boiler, gas hanging stove etc. all have the efficiency that good reduction pollutant discharged.
The utility model discloses the material of burning part includes non-metallic material and metal material, for example, non-metallic material can select honeycomb ceramics for use, simultaneously, what need explain is that, current honeycomb ceramics porous burner applied principle is downthehole burning, with the utility model discloses a principle is different (honeycomb ceramics porous structure, the burning is gone on with the flame form earlier, the ceramic plate is by flame heating back, the burning returns to in the pore and accomplishes in the pore, the combustor is red hot state, produces a large amount of infrared radiation, also known as infrared burner, this combustor explodes easily through rapid cooling and rapid heating, and combustion power is limited, can't be used as high-power heater.)
The utility model provides a combustor has above-mentioned burning part, as shown in fig. 5, for one of them embodiment, the combustor includes casing 1, and the casing includes air inlet 6, and the gas can be sent into the air inlet together through forced draught blower and air or carry out convulsions together through setting up in the air exhauster and the air of gas export, sets up between the export of air inlet and gas and air mixture the utility model discloses a burning part, it is equipped with first gas voltage-sharing hybrid chamber 7 as microchannel rectification combustor between air inlet and microchannel rectification combustor 4, through setting up in air distributor 2 wherein, carries out equipartition with gas and air once, and the export of gas and air mixture is the export of microchannel rectification combustor. An ignition mechanism is arranged here, and the gas passing through the micro-channel rectifying burner is ignited to form a hollow conical flame 9, and in the embodiment, the ignition mechanism can be selected from an ignition needle 5.
In other alternative embodiments, a microchannel rectifier 3 can be arranged between the microchannel rectifying burner 4 and the gas inlet, so that a second gas pressure equalizing mixing cavity 8 is formed between the microchannel rectifying burner and the gas inlet, and the rectifying effect is better.
The air inlet is a mixed gas inlet of gas and air.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a combustion part, its characterized in that, includes main frame body and at least one surely fires the median, surely fire the median and divide into two at least regions of ventilating along the gas passage direction with main frame body is inside, all is equipped with a plurality of partition mechanism in each region of ventilating, partition mechanism divides this region of ventilating into a plurality of through-holes of arranging along the gas passage direction, the through-hole is used for the gas mixture through gas and air and strengthens the mixed effect of the two, surely fire the medianThe combustion isolation belt can separate the combustion flame of the combustion surface of the main frame body into mutually independent flames, and the width D of the stable combustion isolation belt1The total length of 3-10 through holes.
2. The combustion part as claimed in claim 1, wherein the flame stabilizing isolation strip is attached to the surface of the main frame body, or penetrates the thickness direction of the main frame body, or extends into the main frame body for a predetermined length.
3. The combustion component of claim 1, wherein the combustion stabilizing and isolating strip is fixed on the main frame body, and the ventilation area is embedded in the main frame body; or the ventilation area is fixed on the main frame body, and the stable combustion isolation belt is attached to the main frame body; or the ventilation area is fixed on the stable combustion isolation belt, and the ventilation area and the stable combustion isolation belt are integrally fixed on the main frame body, or the whole structure is integrally formed.
4. The combustion component of claim 1, wherein the cross-sectional area S of a single through-holeHole(s)Is 0.1mm2≤SHole(s)≤9mm2。
5. The combustion component of claim 1, wherein the combustion stabilizing separator strip is continuous or discontinuous, and the width D of the discontinuous section is continuous or discontinuous2The total length of 1-2 through holes.
6. The combustion part as claimed in claim 1, wherein the width D of the combustion stabilizing isolation belt is 2mm ≤ D ≤ 50 mm.
7. Combustion part according to claim 1, characterized in that the aeration zone is embodied as a continuous sheet of combustion holes, the cross-sectional area S of the zonenSatisfy 30mm2≤Sn≤22500mm2。
8. The combustion part of claim 1, characterized by a wall thickness of the bore, i.e. theThe thickness of the separating mechanism is not less than 0.03mm and not more than dHole(s)Not more than 3mm, and the wall thickness of the main frame body is not less than 0.03mm and not more than dOuter cover≤50mm。
9. The combustion element according to claim 1, characterized in that the thickness/height h of the venting zone satisfies 4mm ≦ h ≦ 1000 mm.
10. A burner having the combustion part as claimed in any one of claims 1 to 9.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511767.4U CN213577479U (en) | 2020-11-03 | 2020-11-03 | Combustion part and combustor |
| US18/000,720 US20230220991A1 (en) | 2020-11-03 | 2021-11-29 | Burner component and burner |
| PCT/CN2021/133948 WO2022096022A1 (en) | 2020-11-03 | 2021-11-29 | Combustion part and combustor |
| GB2300585.3A GB2612477A (en) | 2020-11-03 | 2021-11-29 | Combustion part and combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511767.4U CN213577479U (en) | 2020-11-03 | 2020-11-03 | Combustion part and combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213577479U true CN213577479U (en) | 2021-06-29 |
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ID=76534043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022511767.4U Active CN213577479U (en) | 2020-11-03 | 2020-11-03 | Combustion part and combustor |
Country Status (1)
| Country | Link |
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| CN (1) | CN213577479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022096021A1 (en) * | 2020-11-03 | 2022-05-12 | 中国科学院大连化学物理研究所 | Burner and applications thereof |
| WO2022096022A1 (en) * | 2020-11-03 | 2022-05-12 | 中国科学院大连化学物理研究所 | Combustion part and combustor |
-
2020
- 2020-11-03 CN CN202022511767.4U patent/CN213577479U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022096021A1 (en) * | 2020-11-03 | 2022-05-12 | 中国科学院大连化学物理研究所 | Burner and applications thereof |
| WO2022096022A1 (en) * | 2020-11-03 | 2022-05-12 | 中国科学院大连化学物理研究所 | Combustion part and combustor |
| GB2612477A (en) * | 2020-11-03 | 2023-05-03 | Dalian Inst Chem & Physics Cas | Combustion part and combustor |
| GB2612478A (en) * | 2020-11-03 | 2023-05-03 | Dalian Inst Chem & Physics Cas | Burner and applications thereof |
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