CN113864772A - Combustor and gas water heater - Google Patents
Combustor and gas water heater Download PDFInfo
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- CN113864772A CN113864772A CN202010616948.5A CN202010616948A CN113864772A CN 113864772 A CN113864772 A CN 113864772A CN 202010616948 A CN202010616948 A CN 202010616948A CN 113864772 A CN113864772 A CN 113864772A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 213
- 239000007789 gas Substances 0.000 claims abstract description 100
- 239000000178 monomer Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 27
- 238000000889 atomisation Methods 0.000 abstract description 11
- 230000010349 pulsation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- -1 heterocyclic nitrogen compounds Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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Classifications
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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
-
- 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
- F23D14/46—Details, e.g. noise reduction means
-
- 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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The invention discloses a combustor and a gas water heater. The burner comprises a combustion body and an atomizing device, wherein the atomizing device is used for providing atomized water for a combustion area of the combustion body. In the invention, the combustion main body is burnt to form a combustion area; the atomization device is beneficial to reducing the temperature of the combustion area by providing atomized water for the combustion area of the combustion main body, so that the local high temperature of the combustion main body is eliminated, the combustion temperature of the combustion main body is uniformly distributed, and the aim of inhibiting the generation of thermal nitrogen oxides is fulfilled; in addition, atomized water provided by the atomization device is dispersed in the combustion area, and kinetic energy generated by combustion can be absorbed, so that noise caused by combustion turbulence pulsation can be reduced.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a burner and a gas water heater.
Background
The gas generates nitrogen oxides (NOx) after combustion, and has high toxicity. Nitrogen oxides NOx include NO and NO2NO is generated directly from flue gas generated after combustion of fuel gas, and NO is continuously oxidized to generate NO along with diffusion of the flue gas to the atmosphere2. Among them, the NO produced during the combustion of fuel can be generally classified into three types according to the difference of its generation mechanism: (1) temperature type NO (Thermal NO, hereinafter referred to as T-NO), mainly N in combustion-consumed air2And then oxidized at high temperature to form NO; (2) fuel type NO (Fuel NO, hereinafter referred to as F-NO), which is mainly NO synthesized by heterocyclic nitrogen compounds in Fuel through thermal decomposition in flame and then with oxides; (3) the rapid NO (hereinafter, referred to as P-NO) is mainly NO generated by burning a hydrocarbon fuel in a fuel excess.
Studies have shown that T-NO is produced in relation to combustion temperature, with higher combustion temperatures producing greater rates of T-NO and more NO.
Disclosure of Invention
The invention mainly aims to provide a burner and a gas water heater which can effectively inhibit NO generation.
To achieve the above object, the present invention provides a burner comprising:
a combustion main body: and the number of the first and second groups,
an atomizing device to provide atomized water to a combustion region of the combustion body.
In one embodiment, the atomizing means comprises an atomizing nozzle;
the combustion body includes a combustion monolith, and the atomizing nozzle is disposed adjacent to the combustion monolith.
In one embodiment, the atomizing means comprises a plurality of atomizing nozzles;
the burning main part includes a plurality of burning monomers, and is a plurality of burning monomer and a plurality of atomizing spray tube sets up side by side in turn.
In one embodiment, a flame high-temperature area is formed at the combustion position of each combustion monomer;
and the jet orifice of the atomizing nozzle is arranged close to the flame high-temperature area.
In one embodiment, the combustion unit has a gas flow passage for flowing combustion gas;
the combustion monomer comprises a shell forming the airflow channel, a combustion assembly arranged at an air outlet of the airflow channel, and an ignition device used for igniting the combustion assembly.
In one embodiment, the atomization device further comprises a water inlet pipeline used for communicating the atomization nozzle and an external water source, and a water quantity regulator arranged on the water inlet pipeline;
the water quantity regulator is a pump body and/or a regulating valve.
In one embodiment, the burner further comprises an inductor and a controller, wherein the controller is electrically connected with the inductor and the water quantity regulator so as to control the water quantity regulator to work according to the combustion state of the combustion main body measured by the inductor.
In one embodiment, the sensor includes a temperature measuring device for detecting a combustion temperature of the combustion body; and/or the presence of a gas in the gas,
the inductor comprises a flame induction device, the flame induction device is close to the combustion monomer, and the flame induction device is used for detecting the flame state of the combustion monomer.
In one embodiment, the burner further comprises an air inlet assembly and a gas assembly;
the air inlet subassembly is used for the burning main part provides outside air, the gas subassembly is used for the burning main part provides the gas.
In one embodiment, the combustion main body comprises a combustion single body formed with an air flow channel, and an air inlet of the air flow channel is communicated with the air inlet assembly and the gas burning assembly;
the airflow channel is arranged in a bent mode along the flowing direction of the air; and/or the presence of a gas in the gas,
the air inlet of the airflow channel is arranged in a necking mode along the flowing direction of air.
In one embodiment, the combustion body comprises a plurality of combustion units, each of which has an air flow passage;
the gas assembly is communicated with a plurality of gas flow channels of the burning monomers through a gas distributing rod.
In addition, in order to achieve the above object, the present invention further provides a gas water heater including a heat exchanger and a burner, the heat exchanger producing hot water by heat generated by the burner, the burner including:
a combustion main body: and the number of the first and second groups,
an atomizing device to provide atomized water to a combustion region of the combustion body.
In the technical scheme provided by the invention, a combustion area is formed by the combustion of the combustion main body; the atomization device is beneficial to reducing the temperature of the combustion area by providing atomized water for the combustion area of the combustion main body, so that the local high temperature of the combustion main body is eliminated, the combustion temperature of the combustion main body is uniformly distributed, and the aim of inhibiting the generation of thermal nitrogen oxides is fulfilled; in addition, atomized water provided by the atomization device is dispersed in the combustion area, and kinetic energy generated by combustion can be absorbed, so that noise caused by combustion turbulence pulsation can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of an embodiment of a combustor provided by the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is an exploded view of the combustion body of FIG. 1;
FIG. 4 is a schematic top view of the combustion body of FIG. 3;
FIG. 5 is a schematic longitudinal sectional view of the combustion monomer in Tab 3.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
22 | |
| 11 | |
231 | |
| 111 | |
232 | Regulating |
| 112 | |
24 | |
| 113 | |
30 | |
| 114 | |
40 | |
| 20 | |
50 | |
| 21 | Atomizing |
60 | Heat exchanger |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a burner and a gas water heater using the same, which can effectively reduce the emission of NOx and reduce the noise of the gas water heater.
The invention provides a burner which is suitable for gas water heaters, and related products and equipment such as a gas wall-mounted boiler and the like which use gas to burn and generate high-temperature hot water for household bathing, heating and the like. Fig. 1 to 5 show an embodiment of a burner according to the present invention.
Referring to fig. 1 to 3, the burner of the present invention includes a combustion body 10 and an atomizing device 20, wherein the atomizing device 20 is used for providing atomized water to a combustion area of the combustion body 10.
In the technical scheme provided by the invention, a combustion area is formed by the combustion of the combustion main body 10; the atomizing device 20 helps to reduce the temperature of the combustion area by supplying atomized water to the combustion area of the combustion body 10, thereby helping to eliminate local high temperature of the combustion body 10, making the combustion temperature of the combustion body 10 uniformly distributed, and achieving the purpose of suppressing the generation of thermal nitrogen oxides; in addition, the atomized water provided by the atomizing device 20 disperses in the combustion zone, absorbing the kinetic energy of combustion, thereby contributing to the reduction of noise caused by combustion turbulence pulsations.
The combustor may be provided as any suitable type of combustor, including a fully premixed combustor or a partially premixed combustor, among others.
The combustor generally comprises a combustion chamber, wherein external air and external fuel gas are introduced into the combustion chamber and then mixed to form mixed gas; the combustion body 10 ignites the mixture gas in the combustion chamber to generate a combustion flame where the combustion body 10 forms a combustion zone. It will be appreciated that because the combustion flame at the combustion zone remains burning, a location within the combustion chamber near the combustion zone will have a higher combustion temperature than a location away from the combustion zone, thereby causing a temperature within the combustion chamber to be non-uniform, resulting in a locally high temperature. The generation of T-NO is easily promoted when a locally high temperature is formed in the combustion chamber, based on the fact that the higher the combustion temperature, the greater the rate of generation of T-NO, and the greater the amount of T-NO generated.
The provision of the atomizing means 20 eliminates the localized high temperatures created as described above. Specifically, the atomization device 20 can utilize the high specific heat capacity of water to absorb heat generated by combustion in the combustion area by providing atomized water to the combustion area, so as to achieve the purpose of cooling; wherein, the water droplet particle diameter of atomizing water is littleer, the distribution is more even and distribution range is wider for the combustion temperature homoenergetic everywhere in combustion area can reduce gradually, and does not appear the temperature shock, changes in the even unanimity that reaches combustion temperature in the combustion chamber, thereby reduces the formation of heating power type nitrogen oxide.
Further, the atomizing device 20 causes small liquid droplets to be uniformly dispersed at the combustion zone by supplying atomized water to the combustion zone; when sound waves enter small liquid drops, due to viscous friction and heat conduction effects, sound energy can be converted into heat energy to cause attenuation of the sound waves, the purpose of reducing noise caused by combustion turbulence pulsation is achieved, and user experience is improved.
It will be appreciated that the atomising device 20 comprises an atomising nozzle 21 and an inlet conduit 22. Wherein, one end of the water inlet pipeline 22 is communicated with the atomizing nozzle 21. The other end of the water inlet pipe 22 is used for connecting an external water source. For example, the other end of the inlet conduit 22 is used to connect to a storage tank, which stores sufficient water; or, the other end of the water inlet pipe 22 is used for connecting a water inlet heat exchange pipe of the heat exchanger 60, and shares a water source with the water inlet heat exchange pipe; the water inlet pipe 22 may be disposed in the combustion chamber, or at least partially outside the combustion chamber; the atomizing nozzle 21 has a jet orifice and a water inlet which are oppositely arranged, wherein the water inlet of the atomizing nozzle 21 is communicated with the water inlet pipe 22, and the water is atomized and sprayed out from the jet orifice of the atomizing nozzle 21 by high pressure, which is not described in detail herein.
The material of making of atomizing spray tube 21 does not do the restriction in this design, can set up to the tubular metal resonator that makes for example by iron chromium aluminum alloy material, because this tubular metal resonator itself can utilize the good heat conductivity of metal promptly, realizes certain heat transfer effect, and the heat transfer effect of atomizing water in addition more helps the combustion of combustion chamber internal entirety even.
Based on the above, referring to fig. 3 and 4, in an embodiment, the combustion body 10 includes the combustion unit 11, and the atomizing nozzle 21 is disposed adjacent to the combustion unit 11. It is understood that the combustion unit 11 is formed with a combustion area by combustion; with atomizing spray tube 21 adjacent combustion monomer 11 setting for atomizing water can directly form in the position department that is closer to the combustion area, thereby directly acts on the combustion area, avoids atomizing water to form in the position department of keeping away from the combustion area, leads to atomizing water aggravate local high temperature owing to absorb other regional heat energy near the in-process of combustion area, and reduces atomizing water's continuation heat-absorbing capacity.
Further, in an embodiment, a flame is formed at the combustion position of the combustion unit 11, the flame generally has a flame core, an inner flame and an outer flame, and the temperature of the flame is sequentially increased from inside to outside, so that a definite high-temperature flame region is correspondingly formed in the combustion area of each combustion unit 11; through setting up the jet orifice of atomizing spray tube 21 near flame high temperature district, with the aforesaid with the same reason, can make atomizing spray tube 21 spun atomizing water directly to flame high temperature district's effect to reduce flame combustion temperature, make the combustion temperature in the combustion chamber even, reach the purpose of restraining the formation of heating power type nitrogen oxide.
In order to realize uniform combustion temperature in the combustion chamber, a plurality of combustion units 11 can be distributed in the combustion chamber, so that combustion can be performed at each position of the combustion chamber, combustion flue gas with sufficient temperature is generated, and good heat exchange is performed on the heat exchanger 60; of course, the atomizing device 20 may also be configured to include a plurality of atomizing nozzles 21, and the plurality of atomizing nozzles 21 are distributed in the combustion chamber. The number of the combustion monomers 11 and the number of the atomizing nozzles 21 can be combined in any form; in one embodiment, when the number of the combustion single bodies 11 and the number of the atomizing nozzles 21 are both greater than or equal to two, the plurality of combustion single bodies 11 and the plurality of atomizing nozzles 21 are alternately arranged side by side. Therefore, the combustion area formed by each combustion single body 11 can be ensured to act corresponding to the atomization spray pipe 21, and the cooling effect of the combustion area of each combustion single body 11 is ensured to be balanced and consistent.
In one embodiment, the atomization device 20 further includes a water volume regulator disposed in the water inlet conduit 22; the water volume regulator is a pump body 231 and/or a regulating valve 232. The pump body 231 and the adjusting valve 232 can be manually adjusted based on manual operation by a user, or can be automatically adjusted based on, for example, a controller. The pump body 231 can adjust the atomized water amount of the atomizing nozzle 21 by adjusting the power of the pump body; the adjusting valve 232 can adjust the atomized water amount of the atomizing nozzle 21 by adjusting the opening of the water inlet pipe 22 at the corresponding position. The different atomized water amounts adjusted in the above steps can realize the NO generation amount inhibiting effect and the noise reduction effect of different degrees.
Based on the above, when the pump 231 and/or the adjusting valve 232 realize the automatic adjusting function through the controller, the burner further comprises a sensor, and the controller is electrically connected to the sensor and the water volume adjuster to control the water volume adjuster to work according to the combustion state of the combustion main body 10 measured by the sensor. The setting of inductor and controller can adapt to the different burning situations of combustor when different applications, and nimble control atomizing device 20 work realizes the better heat transfer effect to outside water source.
Of course, there are many technical solutions for the sensor to achieve the above functions, and in an embodiment, the sensor includes a temperature measuring device for detecting the combustion temperature of the combustion main body 10; and/or in another embodiment, the inductor includes a flame sensing device 24, the flame sensing device 24 is disposed near the combustion unit 11, and the flame sensing device 24 is used for detecting the flame state of the combustion unit 11.
The combustion temperature and the flame state can determine the heat load in the combustion chamber, and the heat load in the combustion chamber can be in one-to-one mapping association with the atomized water quantity of the atomization device 20 in advance, so that the heat load in the current combustion chamber can be calculated, and the associated atomized water quantity can be accurately determined; the controller generates different control commands according to the determined atomized water amount, the pump body 231 is adjusted to have corresponding power and/or the switch valve is adjusted to form corresponding opening degree when receiving the control command, so that the atomized water sprayed out through the atomizing spray pipe 21 is uniformly sprayed into the combustion chamber, local high temperature in the combustion chamber is more quickly eliminated, and the generation of NO is inhibited while normal combustion in the combustion chamber is ensured.
Referring to fig. 1, in one embodiment, the burner further includes an air intake assembly 30 and a gas combustion assembly 40; the air intake assembly 30 is used to provide external air to the combustion body 10, and the gas combustion assembly 40 is used to provide gas to the combustion body 10.
The specific representation of the air intake assembly 30 and the gas combustion assembly 40 is not limited in this design, and in an embodiment, the air intake assembly 30 is formed with an air intake duct, and an air outlet of the air intake duct is communicated with the combustion main body 10. The air intake assembly 30 may include a fan disposed in the air intake duct, and the air flow in the air intake duct may be adjusted by controlling the operation of the fan. The gas module 40 is formed with a gas flow passage, which communicates with the combustion main body 10.
Furthermore, a valve assembly may be disposed at the air intake duct and/or the gas duct, and the valve assembly is controlled to operate to correspondingly control the opening and closing of the air intake duct and/or the gas duct and the adjustment of the specific opening degree, which will not be described in detail herein.
Referring to fig. 5, in one embodiment, the combustion unit 11 has a gas flow channel 111 for flowing combustion gas; the combustion unit 11 includes a housing 112 forming an air flow passage 111, a combustion assembly 113 provided at an air outlet of the air flow passage 111, and an ignition device 114 for igniting the combustion assembly 113. The air flow channel 111 can be connected with external air and external gas, and provides enough space for the external air and the external gas to be fully mixed.
The combustion assembly 113 is disposed at the air outlet of the air flow channel 111, and can support the mixed gas after being fully mixed to be fully combusted under the action of the ignition device 114. The specific expression of the combustion assembly 113 is not limited, and for example, the combustion assembly may include a plate-shaped body (not shown in the drawings), and a plurality of air holes (not shown in the drawings) for the mixed gas to pass through are arranged in the thickness direction of the plate-shaped body, so as to facilitate the uniform combustion of the mixed gas; of course, the specific form of the ignition device 114 is also not limited, and the ignition device 114 may be, for example, an electric igniter or an electric heating wire, which is not described in detail herein. It should be noted that the ignition device 114 is disposed closer to the combustion assembly 113, so that the mixture gas entering the combustion chamber from the gas flow passage 111 can be quickly ignited without loss. The ignition device 114 may be provided in plurality in one-to-one correspondence with the plurality of combustion cells 11, or may be provided in one.
The air inlet of the air flow channel 111 in the combustion unit 11 is communicated with the air intake assembly 30 and the gas combustion assembly 40.
In one embodiment, the gas flow channel 111 is bent along the flowing direction of the gas. The flowing direction of the gas is also the direction from the gas inlet of the gas flow channel 111 to the gas outlet of the gas flow channel 111; the bent gas flow path 111 helps to extend the flow path of the mixed gas as much as possible within the limited space inside the casing of the combustion unit 11, thereby promoting sufficient mixing of the mixed gas and enabling more sufficient combustion when the mixed gas flows to the combustion unit 113.
And/or, in an embodiment, the gas inlet of the gas flow channel 111 is arranged in a necking shape along the flowing direction of the gas. The necking is arranged to enable the cross-sectional area of the airflow channel 111 to have a changing trend of being smaller and then larger; specifically, the aperture of the air inlet of the air flow channel 111 is larger, which is beneficial to increasing the flow rate of the fuel gas and the air, so that more mixed gas can enter the air flow channel 111 more quickly; then, the cross section area of the airflow channel 111 is gradually reduced, so that the gas and the air are gathered together in a concentrated manner, and the gas and the air are rapidly mixed to form mixed gas; finally, the cross-sectional area of the airflow channel 111 is gradually increased, which is helpful to gradually reduce the flow rate of the mixed gas, so that the state of the mixed gas is gradually gentle, and enough time can be reserved for the mixed gas to be fully mixed.
When the combustion main body 10 includes a plurality of combustion units 11 as described above, each combustion unit 11 has an air flow passage 111; the gas burning module 40 is communicated with the plurality of gas flow passages 111 of the plurality of combustion units 11 through the gas distributing rod 50. The gas distributing rod 50 includes a tubular body (not shown) having a gas inlet and a plurality of gas outlets, the gas outlet of the gas burning component 40 is communicated with the gas inlet of the tubular body, so that the gas can diffuse and circulate in the tubular body to the respective gas outlets, and each gas outlet can be correspondingly communicated with a gas flow channel 111 of a combustion unit 11 to provide gas for each gas flow channel 111.
Further, the housing 112 of the combustion unit 11 is provided with a receiving cavity for receiving the gas distributing rod 50. The tubular main body of the gas distributing rod 50 is accommodated in the accommodating cavity, so that the space occupation of the communication part of the combustion single body 11 and the gas distributing rod 50 is reduced, and the integral structure of the combustor is more compact.
In addition, the invention also provides a gas water heater, which comprises a heat exchanger 60 and the burner as described above, and certainly comprises a main body, wherein a heat exchange chamber and a smoke outlet communicated with the heat exchanger 60 are arranged in the main body, the heat exchanger 60 is arranged in the heat exchange chamber, and a smoke outlet of the burner is communicated with the heat exchange chamber. The heat exchanger 60 is connected to an external water source, such as tap water, and the high-temperature flue gas entering the heat exchange chamber through the flue gas outlet of the burner carries enough heat to continuously exchange heat with the tap water in the heat exchanger 60, so that the temperature of the tap water is increased to be required, and hot water is prepared.
The combustion chamber can be arranged separately from the heat exchange chamber or can be arranged integrally with the heat exchange chamber. When the combustion chamber is integrated with the heat exchange chamber, it can be understood that the heat exchanger 60 can be directly disposed in the combustion chamber, so that the flue gas generated by combustion in the combustion chamber directly exchanges heat with the heat exchanger 60.
It should be noted that, the detailed structure of the burner in the gas water heater can refer to the above-mentioned embodiment of the burner, and is not described herein again; because the burner is used in the gas water heater, the embodiment of the gas water heater comprises all technical schemes of all the embodiments of the burner, and the achieved technical effects are completely the same, and are not repeated herein.
Claims (12)
1. A burner, comprising:
a combustion main body: and the number of the first and second groups,
an atomizing device to provide atomized water to a combustion region of the combustion body.
2. The burner of claim 1, wherein the atomizing means comprises an atomizing nozzle;
the combustion body includes a combustion monolith, and the atomizing nozzle is disposed adjacent to the combustion monolith.
3. The burner of claim 1, wherein the atomizing means comprises a plurality of atomizing nozzles;
the burning main part includes a plurality of burning monomers, and is a plurality of burning monomer and a plurality of atomizing spray tube sets up side by side in turn.
4. The burner as claimed in claim 2 or 3, wherein a flame high temperature zone is formed at a combustion position of each of the combustion cells;
and the jet orifice of the atomizing nozzle is arranged close to the flame high-temperature area.
5. A burner as claimed in claim 2 or 3, wherein the combustion unit has a gas flow passage through which combustion gas flows;
the combustion monomer comprises a shell forming the airflow channel, a combustion assembly arranged at an air outlet of the airflow channel, and an ignition device used for igniting the combustion assembly.
6. The burner of claim 2 or 3, wherein the atomizing device further comprises a water inlet pipe for communicating the atomizing nozzle with an external water source, and a water quantity regulator provided in the water inlet pipe;
the water quantity regulator is a pump body and/or a regulating valve.
7. The burner of claim 6, further comprising a sensor and a controller, wherein the controller is electrically connected to the sensor and the water volume regulator to control the operation of the water volume regulator according to the combustion state of the combustion body measured by the sensor.
8. The burner of claim 7, wherein the sensor includes a temperature measuring device for detecting a combustion temperature of the combustion body; and/or the presence of a gas in the gas,
the inductor comprises a flame induction device, the flame induction device is close to the combustion monomer, and the flame induction device is used for detecting the flame state of the combustion monomer.
9. The burner of claim 1, further comprising an air intake assembly and a gas combustion assembly;
the air inlet subassembly is used for the burning main part provides outside air, the gas subassembly is used for the burning main part provides the gas.
10. The burner of claim 9, wherein the combustion body comprises a combustion unit formed with an air flow channel, an air inlet of the air flow channel is communicated with the air inlet component and the gas burning component;
the airflow channel is arranged in a bent mode along the flowing direction of the air; and/or the presence of a gas in the gas,
the air inlet of the airflow channel is arranged in a necking mode along the flowing direction of air.
11. The burner of claim 10, wherein the combustion body includes a plurality of combustion units, each of the combustion units having an air flow passage;
the gas assembly is communicated with a plurality of gas flow channels of the burning monomers through a gas distributing rod.
12. A gas water heater comprising a heat exchanger and a burner as claimed in any one of claims 1 to 11, said heat exchanger producing hot water from heat generated by said burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010616948.5A CN113864772A (en) | 2020-06-30 | 2020-06-30 | Combustor and gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010616948.5A CN113864772A (en) | 2020-06-30 | 2020-06-30 | Combustor and gas water heater |
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| CN113864772A true CN113864772A (en) | 2021-12-31 |
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| CN202010616948.5A Pending CN113864772A (en) | 2020-06-30 | 2020-06-30 | Combustor and gas water heater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921389A (en) * | 1972-10-09 | 1975-11-25 | Mitsubishi Heavy Ind Ltd | Method and apparatus for combustion with the addition of water |
| US4257763A (en) * | 1978-06-19 | 1981-03-24 | John Zink Company | Low NOx burner |
| DE4033710A1 (en) * | 1989-10-31 | 1991-05-02 | Asea Brown Boveri | Combustion chamber for gas turbine - has system to spray water into combustion air to reduce nitrous oxide in exhaust gases |
| CN2718399Y (en) * | 2004-06-21 | 2005-08-17 | 博世（中国）采暖系统有限公司 | Hole core integrated horizontal burner |
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2020
- 2020-06-30 CN CN202010616948.5A patent/CN113864772A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921389A (en) * | 1972-10-09 | 1975-11-25 | Mitsubishi Heavy Ind Ltd | Method and apparatus for combustion with the addition of water |
| GB1449150A (en) * | 1972-10-09 | 1976-09-15 | Mitsubishi Heavy Ind Ltd | Combustion |
| US4257763A (en) * | 1978-06-19 | 1981-03-24 | John Zink Company | Low NOx burner |
| DE4033710A1 (en) * | 1989-10-31 | 1991-05-02 | Asea Brown Boveri | Combustion chamber for gas turbine - has system to spray water into combustion air to reduce nitrous oxide in exhaust gases |
| CN2718399Y (en) * | 2004-06-21 | 2005-08-17 | 博世（中国）采暖系统有限公司 | Hole core integrated horizontal burner |
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| 张统: "《航天发射污染控制》", 国防工业出版社, pages: 84 * |
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