CN214249581U - Burner and gas stove, low-nitrogen burner, gas water heater and gas heating water heater using same - Google Patents
Burner and gas stove, low-nitrogen burner, gas water heater and gas heating water heater using same Download PDFInfo
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- CN214249581U CN214249581U CN202022507320.XU CN202022507320U CN214249581U CN 214249581 U CN214249581 U CN 214249581U CN 202022507320 U CN202022507320 U CN 202022507320U CN 214249581 U CN214249581 U CN 214249581U
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Abstract
The utility model provides a gas-cooker, low nitrogen combustor, gas heater and gas heating water heater of combustor and applied. The novel gas burner comprises a housin, the fan, combustion head and ignition mechanism, the air inlet of casing constitutes the pressure equalizing chamber with the input of combustion head, the output of combustion head sets up ignition mechanism, the combustion head includes main frame body and at least one surely fires 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 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 through-hole is used for strengthening the mixed effect of the two through-gas and strengthening, 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 burning part's power can be along with the combustor area change, and gas and air entering behind the micropore passageway are by high misce bene, flame stabilization, clean high efficiency.
Description
Technical Field
The utility model relates to a combustion apparatus technical field especially relates to a gas-cooker, low nitrogen combustor, gas heater and gas heating water heater of combustor and use.
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. Traditional pipe type fire grateThe combustion process is completed by injecting primary air into the tobacco pipe structure and mixing the primary air and igniting premixed gas and then contacting the premixed gas with secondary air through diffusion, 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 is mainly a combination of a traditional fire grate and a water-cooling copper pipe, reduces flame temperature through heat exchange to realize nitrogen reduction, and has mature technology, high cost, low NOx emission concentration, complex structure and high CO emission concentration; 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 technical problems, a burner with good combustion effect and low cost of discharged pollutants and its application are provided. The utility model discloses a technical means as follows:
a burner comprises a shell, a fan, a burner head and an ignition mechanism, wherein the shell comprises an air inlet, the air inlet and the input end of the combustion head form a pressure equalizing cavity, the fan can blow the mixed gas of gas and air through the combustion head to complete the uniform mixing of the mixed gas, the output end of the combustion head is provided with the ignition mechanism, which is used for igniting the mixture of gas and air, the combustion head comprises a main frame body and at least one stable combustion isolation belt, the stable combustion isolation belt divides the interior of the main frame body into at least two ventilation areas along the direction of the gas channel, a plurality of separation mechanisms are arranged in each ventilation area, the separation mechanism divides the ventilation area into a plurality of through holes which are distributed along the direction of the gas channel and are used for passing the mixed gas and strengthening the mixing effect of the mixed gas and the gas channel, the stable combustion isolation belt can separate combustion flame on the combustion surface of the main frame body into mutually independent flames.
Furthermore, a micro-channel rectifier is further arranged in the pressure equalizing cavity, and a secondary gas pressure equalizing mixing cavity is formed between the micro-channel rectifier and the combustion head.
Further, the air outlet of the fan is connected to the air inlet of the shell, and the fuel gas outlet of the fuel gas pipeline is connected to the front of the air inlet or the rear of the air outlet of the fan.
Further, still include the tobacco pipe, the air intake connection of fan is at the outlet flue of casing, the tobacco pipe is connected at the air outlet of fan, and the gas outlet connection of gas pipeline is behind the air intake of casing.
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; 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 a single through-hole was 0.1mm2≤SHole(s)≤9mm2(ii) a The aeration zone is embodied as a continuous sheet combustionThe cross-sectional area Sn of the hole and the region satisfies 30mm2≤Sn≤ 22500mm2(ii) a 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 coverLess than or equal to 50 mm; the thickness/height h of the ventilation area satisfies that h is more than or equal to 4mm and less than or equal to 1000 mm; width D of the stable combustion isolation belt1The total length of 3-10 through holes, the stable combustion isolation belt is continuous or discontinuous, and the width D of the discontinuous section is2The total length of 1-2 through holes; 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 utility model provides a gas-cooker, includes the combustor, wherein, the casing includes inner circle combustor casing and outer lane combustor casing, the burner includes outer lane burner and inner circle burner, and the outer lane burner sets up in the outer lane combustor casing, and the inner circle burner sets up in the inner circle combustor casing, has predetermined distance between inner circle burner and the outer lane burner, and the gas passageway includes trunk line and inner circle combustor gas pipe and outer lane combustor gas pipe rather than continuous, the gas of inner circle combustor gas pipe output gets into the input of inner circle combustor burner through inner circle combustor gas distribution structure, the gas of outer lane combustor gas pipe output gets into the input of outer lane combustor burner through outer lane combustor gas distribution structure.
A low-nitrogen burner for a gas boiler comprises the burner.
A gas water heater comprises a burner, a smoke tube is connected with the output end of a burning head, a burning cavity is formed between the smoke tube and the burning head, a heat exchanger is arranged in the burning cavity, the heat exchanger absorbs the heat of high-temperature smoke in the burning cavity and transmits the heat to water in a coil tube, and the smoke tube is connected with a smoke outlet of a shell.
The gas heating water heater comprises a burner, a smoke tube is connected with the output end of a burner head, a combustion cavity is formed between the smoke tube and the burner head, a main heat exchanger is arranged in the combustion cavity, absorbs heat of high-temperature smoke in the combustion cavity and transfers the heat to water in a coil, a secondary heat exchanger is used for transferring heat of primary hot water coming out of the main heat exchanger to secondary heat exchange water, and the smoke tube is connected with a smoke outlet of a shell.
The utility model discloses burning part's power can be along with the combustor area change, is burnt after gas and the air admission micropore passageway by high misce bene, lights from micropore passageway blowout back and forms even premixed flame, and the setting of median makes mutual independence between the flame, and flame after the partition forms type pyramid (flame personally submits hollow toper), and flame is more stable, effectively avoids forming the indefinite flame that links, and the burning is stable, the utility model discloses a micropore 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 tempering 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 are 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 labor.
Fig. 1 is a schematic structural view of a burner according to an embodiment of the present invention.
Fig. 2 is a schematic view of a simple structure of a burner head according to an embodiment 1 of the present invention.
Fig. 3 is a schematic view of a simple structure of a burner head according to an embodiment 2 of the present invention.
Fig. 4 is a schematic view of a simple structure of a burner head according to embodiment 3 of the present invention.
Fig. 5 is a schematic view of a simple structure of a burner head according to embodiment 4 of the present invention.
Fig. 6 is the embodiment of the present invention, schematically showing the discontinuous state of the stable combustion isolation belt.
Fig. 7 is a schematic structural view of a gas stove in embodiment 5 of the present invention.
Fig. 8 is a schematic structural view of a low-nitrogen burner for a gas boiler according to embodiment 6 of the present invention.
Fig. 9 is a schematic structural view of a gas water heater according to embodiment 7 of the present invention.
Fig. 10 is a schematic structural view of a gas-fired heating water heater according to embodiment 8 of the present invention.
Fig. 11 is a comparison of the present invention applied to the embodiment and the prior art.
In the figure: 1. a housing; 2. an air distributor; 3. a microchannel rectifier; 4. a burner head; 5. an ignition needle; 6. An air inlet; 7. a pressure equalizing cavity; 8. a secondary gas pressure equalizing and mixing cavity; 9. a flame; 10. a gas valve; 11. A main frame body; 12. a through hole; 13. stably burning the isolation belt; 14. a smoke outlet; 15. a gas mixing structure; 16. a combustion chamber; 17. a heat exchanger; 18. a smoke pipe; 19. a flow guide mechanism; 101. an inner ring combustor casing; 102. an inner ring burner gas tube; 103. the inner ring combustor gas distribution structure; 104. inner ring (burner) burner head; 201. an outer ring burner housing; 202. an outer ring burner gas pipe; 203. the outer ring combustor gas distribution structure; 204. outer ring (burner) burner head; 111. a controller; 112. a fan; 118. a flame detector; 901. a primary heat exchanger; 902. a secondary heat exchanger; 903. circulating water pump.
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.
As shown in fig. 1, the present embodiment discloses a burner, which includes a housing, a blower, a combustion head, and an ignition mechanism, wherein the housing 1 includes an air inlet 6, the air inlet and an input end of the combustion head form a pressure equalizing chamber 7, the blower can blow a mixture of gas and air through the combustion head to complete uniform mixing of the mixture, the output end of the combustion head 4 is provided with the ignition mechanism, which is used for igniting the mixture of gas and air, and in the present embodiment, the ignition mechanism can select an ignition needle 5. The combustion head comprises a main frame body and at least one stable combustion isolation belt 13, the stable combustion isolation belt divides the inside of the main frame body 11 into at least two ventilation areas along the direction of a gas channel, a plurality of separation mechanisms are arranged in each ventilation area, the separation mechanisms divide the ventilation areas into a plurality of through holes 12 which are distributed along the direction of the gas channel, the through holes are used for passing through mixed gas and strengthening the mixing effect of the mixed gas and the ventilation areas, the stable combustion isolation belt can divide combustion flame of the combustion surface of the main frame body into mutually independent flames, and the gas passing through the micro-channel rectifying burner is ignited to form hollow conical flames 9.
The gas and the air are uniformly distributed at one time through the air distributor 2 arranged in the gas distributor, and the outlet of the mixed gas of the gas and the air is the outlet of the micro-channel rectifying burner. And a micro-channel rectifier 3 is also arranged in the pressure equalizing cavity, so that a second gas pressure equalizing mixing cavity 8 is formed between the micro-channel rectifier and the pressure equalizing mixing cavity, and the rectification effect is better.
In some embodiments, the air outlet of the blower is connected to the air inlet of the housing, and the gas outlet of the gas pipeline is connected to the front or the rear of the air inlet of the blower.
In other optional embodiments, the gas-fired boiler further comprises a smoke tube, the air inlet of the fan is connected to the smoke outlet of the housing, the smoke tube is connected to the air outlet of the fan, and the gas outlet of the gas pipeline is connected to the back of the air inlet of the housing. The blower 112 is used to provide combustion air,
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; 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 not less than 4mm and not more than 1000mm, the height of different through holes can be the same or different, the upper and lower face can be planar or non-planar, but need can guarantee that gas and air mixture enter into behind the micropore, receive the restriction of pore volume, gas mixture can constantly collide the mixture in the pore wall of micropore, make gas passage's output, gas output direction is the straight line, the micropore has played the effect of mixing and rectification in this process, the combustion efficiency of flame has further been strengthened.
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. 2 shows the shape of the combustion part of example 1, the main frame body is rectangular, the internal combustion stabilizing isolation belt 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. 6, in other alternative embodiments, the areas divided in the rectangular interior can be unequal in area, and the combustion stabilizing isolation belt can also be discontinuous, but the width of the combustion stabilizing isolation belt needs to be ensuredDegree D1The 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. 3 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 to the main frame through a plurality of combustion stabilizing isolation zones to divide the area into predetermined shapes.
FIG. 4 shows the shape of the combustion part of example 3, in which the main frame is circular and the inside is divided by a plurality of stable combustion isolation zones.
FIG. 5 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.
Above-mentioned surely fire arrangement form of median includes the multiple, if attached in main frame body surface, or run through in main frame body thickness direction, or stretch into the internal length of predetermineeing of main frame, the main objective is separated main frame body, traditional forced draught blower/air exhauster is at the in-process of inputing the internal gas passage of main frame with the gas, the screw action of fan makes the wind of output fast at the local area velocity of flow, the local area velocity of flow is slow, make flame float indefinite, thereby lead to the burning incomplete, and the utility model discloses a set up surely fire the median, separate main frame body for a plurality of blocks, although adjacent block combustion power still has the difference, but adjacent flame can not be influenced, can realize stable burning.
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.)
Fig. 7 is a gas range that can be implemented in the present embodiment, including the burner, wherein the housing includes an inner ring burner housing and an outer ring burner housing, the burner comprises an outer ring burner and an inner ring burner, the outer ring burner 204 is arranged in the outer ring burner shell 201, the inner ring burner 104 is arranged in the inner ring burner shell 101, a preset distance exists between the inner ring burner and the outer ring burner, the gas channel comprises a main pipeline and an inner ring burner gas pipe 102 and an outer ring burner gas pipe 202 which are connected with the main pipeline, the gas output by the gas pipe of the inner ring burner enters the input end of the combustion head of the inner ring burner through the gas distribution structure 103 of the inner ring burner, the gas of outer lane combustor gas pipe output gets into the input of outer lane combustor combustion head through outer lane combustor gas distribution structure 203, and the air input of gas and air can be adjusted simultaneously to gas governing valve 10 wherein.
Fig. 8 is a low-nitrogen burner for a gas boiler, which can be implemented in this embodiment, and includes a controller 111, a blower, a gas valve, a gas distribution mechanism, a gas mixing chamber housing, a combustion head, an ignition needle, and a flame detector, where the blower 112 is used to provide air required for combustion, the gas valve 10 is used to control the on-off and flow rate of gas, the gas distribution mechanism may be a micro-channel rectifier and is used to uniformly distribute gas in the cross section of an air channel, the gas mixing chamber is used to mix gas and air, the ignition needle is disposed at the output end of the combustion head and is used to ignite premixed gas of air and gas, the flame detector 118 is disposed at the output end of the combustion head and is used to detect a flame signal, and the controller 1 is used to control the blower, the gas valve, the ignition needle, and the flame detector.
In the embodiment, one end of the gas distribution mechanism is connected with the gas valve 10, the other end of the gas distribution mechanism is arranged in the gas mixing cavity shell 1 connected with the air outlet of the fan, the gas distribution mechanism is in a disc shape, in other optional implementation modes, the gas distribution mechanism can also be in other implementable shapes such as a comb shape, and the mixing of air and gas is completed in the gas mixing cavity shell or in the fan.
Fig. 9 is a gas water heater capable of being implemented in this embodiment, which includes the burner, and the housing 1 is provided with an air inlet 6 and a smoke outlet 14, in this embodiment, the bottom of the housing has a certain inclination angle, the inclined plane is provided with a diversion mechanism 19, the air inlet is provided below the diversion mechanism, the air inlet is provided with an air mixing structure 15, the smoke tube 18 is connected to the output end of the burner, a combustion chamber 16 is formed therebetween, the combustion chamber is provided with a heat exchanger 17, which absorbs heat of high-temperature smoke in the combustion chamber and transfers the heat to water in the coil, and the smoke tube is connected to the smoke outlet of the housing.
Fig. 10 shows a gas-fired water heater according to an embodiment similar to the gas-fired water heater disclosed in embodiment 7, the embodiment includes the burner, the smoke tube is connected to the output end of the burner head, a combustion chamber is formed therebetween, a primary heat exchanger 901 is disposed in the combustion chamber, and absorbs heat of high-temperature smoke in the combustion chamber and transfers the heat to water in the coil, water in the primary heat exchanger is driven by a circulating water pump 903 to perform an internal circulation, the secondary heat exchanger 902 is used for transferring heat of primary hot water from the primary heat exchanger to secondary heat exchange water, in the embodiment, the secondary heat exchanger is provided with a tap water inlet, and water outlets, such as a hot water outlet, a heating water outlet, and a heating water return port, and the smoke tube is connected to the smoke outlet of the housing.
It can also be seen from the comparison chart of fig. 11 that the utility model discloses the flame of burning is blue, and adjacent flame is the steady combustion all, and fig. 11 still shows the pollutant emission volume of surveying through the experiment, and at present china's emission standard to gas boiler is that nitrogen oxide emission volume 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.
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. A burner is characterized by comprising a shell, a fan, a burner head and an ignition mechanism, the shell comprises an air inlet, the air inlet and the input end of the combustion head form a pressure equalizing cavity, the fan can blow the mixed gas of the fuel gas and the air through the combustion head to complete the uniform mixing of the mixed gas, the output end of the combustion head is provided with the ignition mechanism, which is used for igniting the mixture of gas and air, the combustion head comprises a main frame body and at least one stable combustion isolation belt, the stable combustion isolation belt divides the interior of the main frame body into at least two ventilation areas along the direction of the gas channel, a plurality of separation mechanisms are arranged in each ventilation area, the separation mechanism divides the ventilation area into a plurality of through holes which are distributed along the direction of the gas channel and are used for passing the mixed gas and strengthening the mixing effect of the mixed gas and the gas channel, the stable combustion isolation belt can separate combustion flame on the combustion surface of the main frame body into mutually independent flames.
2. The burner according to claim 1, wherein a micro-channel rectifier is further arranged in the pressure equalizing cavity, and a secondary gas pressure equalizing mixing cavity is formed between the micro-channel rectifier and the burner head.
3. The burner of claim 1, wherein the air outlet of the blower is connected to the air inlet of the housing, and the gas outlet of the gas pipeline is connected to the front of the air inlet or the rear of the air outlet of the blower.
4. The burner of claim 1, further comprising a smoke tube, wherein the air inlet of the fan is connected to the smoke outlet of the housing, the smoke tube is connected to the air outlet of the fan, and the gas outlet of the gas pipeline is connected to the back of the air inlet of the housing.
5. The burner according to any one of claims 1 to 4, wherein the combustion stabilizing isolation strip 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; 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.
6. Burner according to claim 5, wherein the cross-sectional area sfore of a single through hole is 0.1mm2≤SHole(s)≤9mm2(ii) a The ventilation area is embodied as a continuous combustion hole with a cross-sectional area Sn of 30mm2≤Sn≤22500mm2(ii) a 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 coverLess than or equal to 50 mm; the thickness or height h of the ventilation area satisfies h is more than or equal to 4mm and less than or equal to 1000 mm; width D of the stable combustion isolation belt1The total length of 3-10 through holes, the stable combustion isolation belt is continuous or discontinuous, and the width D of the discontinuous section is2The total length of 1-2 through holes; the width D of the stable combustion isolation belt is larger than or equal to 2mm and smaller than or equal to 50 mm.
7. A gas stove is characterized by comprising the burner as claimed in any one of claims 1 to 3, wherein the housing comprises an inner ring burner housing and an outer ring burner housing, the burner comprises an outer ring burner and an inner ring burner, the outer ring burner is arranged in the outer ring burner housing, the inner ring burner is arranged in the inner ring burner housing, a preset distance exists between the inner ring burner and the outer ring burner, the gas channel comprises a main pipeline and an inner ring burner gas pipe and an outer ring burner gas pipe which are connected with the main pipeline, the gas output by the inner ring burner gas pipe enters the input end of the inner ring burner via the inner ring burner gas distribution structure, and the gas output by the outer ring burner gas pipe enters the input end of the outer ring burner via the outer ring burner gas distribution structure.
8. A low-nitrogen burner for a gas boiler, comprising the burner of claim 6.
9. A gas water heater, comprising the burner of claim 6, wherein a flue tube is connected to the output end of the burner head to form a combustion chamber, a heat exchanger is disposed in the combustion chamber to absorb heat from high temperature flue gas in the combustion chamber and transfer the heat to water in the coil, and the flue tube is connected to the outlet of the housing.
10. A gas-fired water heating furnace, characterized by that, including the burner of claim 6, the tobacco pipe links to each other with the output of the said burner, form the combustion chamber between them, there are primary heat exchangers in the said combustion chamber, it absorbs the heat of the high-temperature flue gas in the combustion chamber and transmits the heat to the water in the coil, the secondary heat exchanger is used for transmitting the heat of the primary hot water that the primary heat exchanger comes out to the water of secondary heat exchange, the said tobacco pipe links to the outlet flue of the body.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022507320.XU CN214249581U (en) | 2020-11-03 | 2020-11-03 | Burner and gas stove, low-nitrogen burner, gas water heater and gas heating water heater using same |
| GB2300587.9A GB2612478A (en) | 2020-11-03 | 2021-11-29 | Burner and applications thereof |
| PCT/CN2021/133947 WO2022096021A1 (en) | 2020-11-03 | 2021-11-29 | Burner and applications thereof |
| US18/002,162 US20230349549A1 (en) | 2020-11-03 | 2021-11-29 | Burner and applications thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022507320.XU CN214249581U (en) | 2020-11-03 | 2020-11-03 | Burner and gas stove, low-nitrogen burner, gas water heater and gas heating water heater using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214249581U true CN214249581U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022507320.XU Active CN214249581U (en) | 2020-11-03 | 2020-11-03 | Burner and gas stove, low-nitrogen burner, gas water heater and gas heating water heater using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214249581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN114877326A (en) * | 2022-04-15 | 2022-08-09 | 张继伦 | Multi-layer wire mesh fire head of vigorous fire stove capable of fully burning and silencing without tempering |
-
2020
- 2020-11-03 CN CN202022507320.XU patent/CN214249581U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| GB2612478A (en) * | 2020-11-03 | 2023-05-03 | Dalian Inst Chem & Physics Cas | Burner and applications thereof |
| GB2612477A (en) * | 2020-11-03 | 2023-05-03 | Dalian Inst Chem & Physics Cas | Combustion part and combustor |
| CN114877326A (en) * | 2022-04-15 | 2022-08-09 | 张继伦 | Multi-layer wire mesh fire head of vigorous fire stove capable of fully burning and silencing without tempering |
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