CN106871120A - Burner assembly and the gas heater with it - Google Patents
Burner assembly and the gas heater with it Download PDFInfo
- Publication number
- CN106871120A CN106871120A CN201710210078.XA CN201710210078A CN106871120A CN 106871120 A CN106871120 A CN 106871120A CN 201710210078 A CN201710210078 A CN 201710210078A CN 106871120 A CN106871120 A CN 106871120A
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- Prior art keywords
- gas
- mixing passage
- air inlet
- burner assembly
- import
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- 239000007789 gas Substances 0.000 claims abstract description 192
- 230000008676 import Effects 0.000 claims abstract description 71
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 37
- 239000003517 fume Substances 0.000 claims abstract description 34
- 239000000567 combustion gas Substances 0.000 claims abstract description 22
- 238000010943 off-gassing Methods 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims description 49
- 239000003054 catalyst Substances 0.000 claims description 44
- 239000011159 matrix material Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 241000264877 Hippospongia communis Species 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 241001233242 Lontra Species 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 13
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- 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
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/1412—Special features of gas burners for radiant burners
Abstract
The invention discloses a kind of burner assembly and the gas heater with it, the burner assembly includes：Exhaust fume collecting hood；Gas mixing passage, gas mixing passage includes first gas import and second gas import, one is passed through combustion gas and another is passed through combustion-supporting gas in first gas import and second gas import, the outgassing direction of the first air inlet import and the outgassing direction of second gas import are intersecting or relative, and the outlet of gas mixing passage is connected with exhaust fume collecting hood；Distribution net, distribution net is located in gas mixing passage and is located at the downstream of first gas import and second gas import；Catalytic combustion system, catalytic combustion system is located in exhaust fume collecting hood, and catalytic combustion system is relative with the outlet of gas mixing passage；Heater, heater is used to preheat catalytic combustion system.Burner assembly according to embodiments of the present invention and the gas heater with it, burning are abundant, and the discharge capacity of carbon monoxide and nitrogen oxides is few, with cleaning, efficiently, environmental protection the features such as.
Description
Technical field
The present invention relates to water heater arrangement technical field, more particularly, to a kind of burner assembly and the combustion with it
Gas water heater.
Background technology
At present, water heater has turned into common household electrical appliance in daily life.In the related art, the burning side of water heater
Formula is flaming combustion, and combustion gas and air are not pre-mixed in burner, and it is sent into combustion chamber respectively, is fired in mixing
Burn, the flame for producing that burns is more long, there is the profile of distinctness, because activation energy is higher, burning velocity is slow, and incomplete combustion causes
The thermal efficiency of burning declines, and the gas radiation amount of flaming combustion flame is smaller, is main heat transfer type, energy profit with heat convection
It is low with rate.Additionally, under flaming combustion mode, due to different parts and the difference of air contact burnt, causing the complete of burning
Degree and temperature are also different, and in high-temperature region, temperature is higher, the pollution such as oxygen and nitrogen reaction generation nitrogen oxides in air
Thing, in low-temperature space, incomplete combustion can produce the harmful substances such as carbon monoxide, hydrocarbon and tar.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of combustion
Burner component, the carbon monoxide and nitrogen oxide emission of the burner assembly be low, with efficient, energy-saving and environmental protection the features such as.
The present invention also proposes a kind of gas heater with the burner assembly.
When flaming combustion in correlation technique is in relatively low thermal power operating mode, the flame temperature in combustion chamber is relatively low, if
Increase air coefficient, can both be such that flame temperature further reduces, and almost nitrogenfree oxide is produced, and oxygen concentration can again increased
The burning of big fuel is more thorough, so carbon monoxide discharge capacity very little, but flaming combustion is when being in higher calorific power, increases
Air coefficient has been not enough to produce above-mentioned beneficial effect.Although the non flame combustion mode in correlation technique can change to a certain extent
The discharge capacity of carbon monoxide and nitrogen oxides under kind higher calorific power operating mode, combustion process cannot still realize the zero-emission of nitrogen oxides
Put.
The burner assembly of embodiment includes according to a first aspect of the present invention：Exhaust fume collecting hood；Gas mixing passage, the gas
Hybrid channel includes first gas import and second gas import, in the first gas import and the second gas import
One is used to be passed through combustion-supporting gas, the outgassing direction of the first air inlet import and described second for being passed through combustion gas and another
The outgassing direction of gas feed is intersecting or relative, and the outlet of the gas mixing passage is connected with the exhaust fume collecting hood；Distribution net, institute
State the downstream that distribution net is located in the gas mixing passage and is located at the first gas import and the second gas import；
Catalytic combustion system, the catalytic combustion system is located in the exhaust fume collecting hood, and the catalytic combustion system is mixed with the gas
The outlet for closing passage is relative；Heater, the heater is used to preheat the catalytic combustion system.
Burner assembly according to embodiments of the present invention, is preheated by heater to catalytic combustion system so that
After catalytic combustion system reaches initiation temperature, from flaming combustion to catalysis burning (flameless combustion) transition, and then burner is met
Component burns fully under different power operating modes, and the discharge capacity of carbon monoxide and nitrogen oxides is few, with cleaning, efficient, ring
The features such as guarantor.
According to one embodiment of the invention, the gas mixing passage includes：First air inlet pipe, first air inlet pipe
One end is formed as the first gas import of the gas mixing passage and the other end is formed as the outlet of the gas mixing passage,
First gas can be entered in gas mixing passage by first gas import, and be discharged by exporting.
According to a further example of the invention, the side of the part being located in first air inlet pipe outside the exhaust fume collecting hood
The second gas import is formed with wall.
According to an example alternatively of the invention, the gas mixing passage also includes the second air inlet pipe, described second
Air inlet pipe is stretched into first air inlet pipe and adjacent to the entrance of first air inlet pipe, is stretched into second air inlet pipe described
One or spaced apart multiple second gas imports are formed with the side wall of the part of the first air inlet pipe.
Further, entrance of the second gas import in second air inlet pipe towards first air inlet pipe.
According to an alternative embodiment of the invention, the heater includes：Flaming combustion device, the flaming combustion device
At least a portion is located in the gas mixing passage, and the flaming combustion device is used adjacent to the outlet of the gas mixing passage
Heated in the catalytic combustion system；Igniter, the igniter is used for having flame to fire to described adjacent to the flaming combustion device
Burner is lighted a fire, and so, facilitates heater to preheat catalytic combustion system.
According to another alternative embodiment of the invention, the catalytic combustion system includes：Cover body, the cover body is located at described
In exhaust fume collecting hood and relative to the gas mixing passage outlet into back-off shape, and the cover body at least a portion and institute
The bottom surface stated in exhaust fume collecting hood is spaced apart；Catalyst converter, the catalyst converter is located in the cover body, and with the gas mixing passage
Outlet is relative, and catalyst converter is flowed through by air-flow hybrid channel gas out, and cover body can make air accumulation and then ensure catalysis combustion
Burn more abundant.
Alternatively, the catalyst converter includes：Matrix；Catalyst, the catalyst converter is bonded on the matrix, the catalysis
The carrier of device is modified aluminas, the active component of the catalyst converter is at least one in platinum and Pa, and the catalyst is helped
Agent is at least one in aluminum oxide and iron oxide.
Further, described matrix is metal otter board, ceramic honey comb or foam silicon carbide ceramics.
Alternatively, the outlet of the gas mixing passage is stretched into the cover body, at least a portion of the catalyst converter with
The outlet of the gas mixing passage is relatively or the catalyst converter is located at the extension of outlet or the outlet of the gas mixing passage
Inner side.
The gas heater of embodiment includes according to a second aspect of the present invention：Burner assembly, the burner assembly is
Burner assembly according to above-described embodiment；Heat exchanger tube, the heat exchanger tube is coiled in the collection cigarette of the burner assembly
On cover.
Gas heater according to embodiments of the present invention, by using the combustion described in embodiment according to a first aspect of the present invention
Burner component, have the advantages that carbon monoxide and nitrogen oxide emission it is few, cleaning, efficiently, environmental protection.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of burner according to embodiments of the present invention；
Fig. 2 is the schematic diagram of burner in accordance with another embodiment of the present invention；
Fig. 3 is the schematic diagram of gas heater according to embodiments of the present invention.
Reference：
100：Burner assembly；
10：Exhaust fume collecting hood；
20：Gas mixing passage；20a：The outlet of gas mixing passage；
21：First air inlet pipe；21a：First gas import；
22：Second air inlet pipe；22a：Second gas import；
30：Distribution net；
40：Catalytic combustion system；
41：Cover body；
42：Catalyst converter；421：Matrix；422：Catalyst；
50：Heater；51：Flaming combustion device；52：Igniter；
200：Heat exchanger tube.
300：Blower fan.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " length ", " width ", " thickness ", " on ",
D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " axial direction ", " radial direction ", " week
To " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description this hair
Bright and simplified description, must be with specific orientation, with specific orientation rather than the device or element for indicating or imply meaning
Construction and operation, therefore be not considered as limiting the invention.Additionally, defining " first ", the feature of " second " can be with bright
Show or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple " contains
Justice is two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The burner assembly 100 of embodiment according to a first aspect of the present invention is described below.
As shown in figure 1, burner assembly 100 according to embodiments of the present invention include exhaust fume collecting hood 10, gas mixing passage 20,
Distribution net 30, catalytic combustion system 40 and heater 50.
There is first gas import 21a and second gas import 22a, first gas import 21a on gas mixing passage 20
Can be used to be passed through combustion gas, second gas import 22a can be used to be passed through combustion-supporting gas, or first gas import 21a is used to be passed through
Combustion-supporting gas, second gas import 22a is used to be passed through combustion gas, the outgassing direction of first gas import 21a and going out for second gas
Gas direction is intersecting or relative, and the outlet 20a of gas mixing passage is connected with exhaust fume collecting hood 10, the gas in gas mixing passage 20
Body can be entered in exhaust fume collecting hood 10 by outlet.
Distribution net 30 is located in gas mixing passage 20, and distribution net 30 is arranged on first gas import 21a and the second gas
The downstream of body import 22a, catalytic combustion system 40 is located in exhaust fume collecting hood 10, and with the outlet 20a of gas mixing passage just phase
Right, distribution net 30 can be evenly distributed combustion gas and combustion-supporting gas, and the gas after being sufficiently mixed flow to catalysis burning dress
Put at 40, then catalytic combustion system 40 is preheated by heater 50, temperature is further raised when reaching predetermined temperature,
Catalytic combustion system 40 can realize fully burning, and the discharge capacity of carbon monoxide and nitrogen oxides is few in combustion process, with biography
The combustion system of system is compared, and not only increases the utilization rate to fuel, and discharge of poisonous waste amount is few.
Thus, combustion gas and combustion-supporting gas are mixed into gas by first gas import 21a and second gas import 22a respectively
Close in passage 20, and combustion gas mixes with combustion-supporting gas part, and combustion gas and combustion-supporting gas are carried out uniformly by distribution net 30 then
Mixing, the gas after being sufficiently mixed is preheating to predetermined by exporting to up at catalytic combustion system 40 in catalytic combustion system 40
Flameless combustion can be carried out after temperature, mixed gas occur flameless combustion directly through catalytic combustion system 40, so as in difference
Power operating mode under realize clean combustion.
By the way of this kind of catalysis burning, combustible burns in the presence of catalytic combustion system 40, with correlation technique
In combustion system compare, be catalyzed burning temperature it is relatively low, can effectively suppress the generation of nitrogen oxides, at the same be catalyzed burning
Compare completely, reduce the content of carbon monoxide in flue gas.
Burner assembly 100 according to embodiments of the present invention, by way of using catalysis burning, switches in high power
It is flameless combustion, realization can fully burn in each stage of combustion process, and the discharge capacity of carbon monoxide and nitrogen oxides is few,
With cleaning, efficiently, environmental protection the features such as.
According to one embodiment of present invention, gas mixing passage 20 includes the first air inlet pipe 21, in the first air inlet pipe 21
One end there is first gas import 21a, the other end has the outlet 20a of gas mixing passage.By the shape of the first air inlet pipe 21
Into gas channel.
In addition, the second gas import 22a in the application can be arranged to many different forms, it is only necessary to by the first gas
The outgassing direction of body import 21a is arranged to intersect or relative with the outgassing direction of second gas import 22a.
Wherein, the outgassing direction of first gas import 21a is relative with the outgassing direction of second gas import 22a or intersects,
Refer to that the air-flow that the air-flow entered by first gas import 21a can be entered with second gas import 22a can be formed and mutually rushed
The form of mixing, such as relative two strands of air-flows liquidate, or intersecting two bursts of inclinations of air-flow are symmetrical, so as to realize entering into
Gas in gas mixing passage 20 can liquidate mixing, improve the mixing efficiency and uniformity coefficient of combustion gas and combustion-supporting gas.
Describe below the embodiment of the present invention some realize " outgassing direction of first gas import 21a enters with second gas
The outgassing direction of mouthful 22a is arranged to intersecting or relative " structure.
Wherein, as shown in Fig. 2 second gas import 22a can be arranged at the first air inlet pipe 21 outside exhaust fume collecting hood 10
On the wall of side, and set positioned at the position of neighbouring first gas import 21a.Because second gas import 22a is set and the first air inlet
On the side wall of pipe 21, therefore, the gas that second gas import 22a enters will necessarily enter with the interior air-flow for passing through of the first air inlet pipe 21
Row impingement mix.
It is of course also possible to the direction of second gas import 22a is rationally set, by the side of second gas import 22a
To being arranged perpendicular to the first air inlet pipe 21 or with the first air inlet pipe 21 in the predetermined angle handed over.
As shown in figure 1, facilitating the structure that combustion gas mixes with combustion-supporting gas present invention also offers another kind.Specifically,
Gas mixing passage 20 also includes the second air inlet pipe 22, and the second air inlet pipe 22 is set near the entrance of the first air inlet pipe 21, second
Air inlet pipe 22 stretches into the inside of the first air inlet pipe 21, and stretches into the side wall of the part in the first air inlet pipe 21 in the second air inlet pipe 22
Upper to have second gas import 22a, the quantity of second gas import 22a can be selected reasonably, for example, the second air inlet pipe
There is a second gas import 22a on the 22 side walls for stretching into the part in the first air inlet pipe 21, or the second air inlet pipe 22 is stretched
Enter and be placed with multiple second gas import 22a, the second air inlet pipe with compartment of terrain on the side wall of the part in the first air inlet pipe 21
The entrance of second gas import 22a the first air inlet pipe 21 of direction on 22, so, for example, combustion-supporting gas can enter by first
The first gas entrance of tracheae 21 enters, and combustion gas enters the first air inlet by the second gas import 22a in the second air inlet pipe 22
Pipe 21, is now tentatively mixed using combustion-supporting gas with the flowing of combustion gas.
Wherein, second gas import 22a is included but is not limited to towards the entrance of the first air inlet pipe 21：Second gas import
22a is opposite with the airintake direction of the first air inlet pipe 21 or angle in predetermined angular.
According to still another embodiment of the invention, heater 50 is mainly made up of flaming combustion device 51 and igniter 52,
At least a portion of flaming combustion device 51 is located in gas mixing passage 20, and flaming combustion device 51 is near gas mixing passage
Outlet 20a is set, and igniter 52 is arranged near flaming combustion device 51, flaming combustion device 51 can be lighted a fire so that have flame
Burner 51 carries out flaming combustion, to realize heating catalytic combustion system 40.
That is, realizing the preheating to catalysis burning by way of flaming combustion.
Specifically, the flaming combustion heatable catalytic burner 40 first under low-power, makes catalysis burn in the short time
Device 40 reaches initiation temperature, then stops flaming combustion, for example, can improve by of short duration cut-out combustion gas or directly fuel/sky
Oxygen mixture flow velocity makes the de- fire of flaming combustion.
Certainly, the present invention has many kinds to the method for the preheating of catalytic combustion system 40, for example can also be by heating tube pair
Catalytic combustion system 40 is preheated etc..
According to still a further embodiment, as shown in figure 1, catalytic combustion system 40 mainly includes cover body 41 and catalysis
Device 42, cover body 41 is located in exhaust fume collecting hood 10, and cover body 41 is distributed relative to the outlet 20a back-off shapes of gas mixing passage, and cover
The end (lower end in Fig. 1) of body 41 is spaced apart setting with the inner bottom surface of exhaust fume collecting hood 10.Catalyst converter 42 is similarly positioned in exhaust fume collecting hood 10
In cover body 41, catalyst converter 42 is relative with the outlet 20a of gas mixing passage, and so preliminary mixed gas passes through gas mixing
The outlet 20a of passage flows through catalyst converter 42, and the cover body 41 positioned at the top of catalyst converter 42 can cause that air accumulation fully burns, and fire
Gas after burning is flowed out by the end of cover body 41,.
It will be appreciated by persons skilled in the art that outlet flue is provided with exhaust fume collecting hood 10, as shown in figure 1, in the present invention
Outlet flue set with the top of exhaust fume collecting hood 10, flue gas will be discharged from outlet flue after the completion of burning.
Further, catalyst converter 42 is mainly made up of matrix 421 and catalyst 422, it is preferable that matrix 421 uses metal
Web plate, ceramic honey comb or foam silicon carbide ceramics are made.Catalyst 422 is bonded with matrix 421, by catalyst 422
It is made after slurries with bonding agent and is coated on matrix 421.
Wherein it is preferred to, the carrier of catalyst 422 uses modified aluminas, the active component of catalyst 422 using platinum and
At least one in Pa, using at least one in aluminum oxide and iron oxide, catalyst 422 is by adopting for the auxiliary agent of catalyst 422
Above-mentioned material is used, is conducive to catalysis burning after predetermined initiation temperature is reached.
Alternatively, the outlet 20a of gas mixing passage is stretched into cover body 41, and at least a portion of catalyst converter 42 is mixed with gas
The outlet 20a for closing passage is relative, or catalyst converter 42 is located exactly at the outlet 20a of gas mixing passage, or catalyst converter 42
Positioned at the inner side that the outlet 20a of gas mixing passage extends, be so conducive to the gas flowed out by the outlet 20a of gas mixing passage
Body flows through catalyst converter 42 and catalysis burning occurs, and ensures the adequacy of burning.
In order to realize the purpose of smokeless emission itself, the ratio in the preferred scheme of the application to combustion gas and combustion-supporting gas is entered
Some researchs are gone, for example, model of the ratio of methane in being passed through combustion gas and the oxygen being passed through in combustion-supporting gas 1/2 to 1/3
In enclosing；Preferably, model of the ratio of the methane being passed through in combustion gas and the oxygen being passed through in combustion-supporting gas 1/2.18 to 1/2.24
In enclosing.
The general combustion-supporting gas being passed through by first gas import 21a or second gas import 22a is air, therefore, this
The methane being passed through in invention in combustion gas be passed through the ratio of combustion-supporting gas (air) in the range of 1/8 to 1/12, preferably exist
In the range of 1/10.3 to 1/10.6.
Outstanding advantages in the present invention are that the discharge capacity of nitrogen oxides and carbon monoxide in combustion process is few.
Specifically, test data of experiment is as shown in the table, such as in the range of 20-50L/min methane flow rates, adjusts direct current wind
The input voltage of machine 300, oxygen content is 6.3% or so in control flue gas, you can realize zero-emission and an oxygen of nitrogen oxides
Change the low emission of carbon.
In addition to data shown in upper table, following experimental phenomena can also be drawn：
1. nitrogen oxides can realize zero-emission, such as 4.7%-7.8% in the range of broader oxygen content；
2. the discharge value of carbon monoxide and the premix situation of fuel/air mixture are in obvious positive correlation, further improve gas pre-
Mixed situation, the discharge capacity of carbon monoxide constantly reduces；
3. can be power output by the product of the voltage and current of dc source, and then judge the air output of blower fan 300.
Specifically described according to a burner assembly for specific embodiment 100 of the invention with reference to Fig. 1-3.
As shown in figure 1, burner assembly 100 includes exhaust fume collecting hood 10, gas mixing passage 20, distribution net 30, catalysis burning
Device 40, heater 50 and controller.
Gas mixing passage 20 includes the first air inlet pipe 21 and the second air inlet pipe 22, and one end of the first air inlet pipe 21 is first
Gas feed 21a, the other end for gas mixing passage outlet 20a, the second air inlet pipe 22 along the first air inlet pipe 21 radial direction
Inserted in the first air inlet pipe 21 by the side wall of the first air inlet pipe 21, and the second air inlet pipe 22 sets adjacent to the entrance of the first air inlet pipe 21
Put, there are multiple second gas being intervally arranged in the lower wall for stretching into the second air inlet pipe of part 22 in the first air inlet pipe 21
Entrance 22a.
Distribution net 30 and heater 50 are located in air-flow hybrid channel 20, and distribution net 30 is located at the upper of the second air inlet pipe 22
Side, heater 50 is located at the top of distribution net 30, and heater 50 includes flame burner 51 and igniter 52, catalysis burning
The outlet 20a that device 40 may be located at air-flow hybrid channel is outer and relative with the outlet of air-flow hybrid channel 20 (as shown in Figure 1),
The inner side (as shown in Figure 2) of the outlet 20a extensions of air-flow hybrid channel can also be located at, it is also possible to logical positioned at air-flow mixing
At the outlet 20a in road (as shown in Figure 3).
Catalytic combustion system 40 includes cover body 41 and catalyst converter 42, wherein, cover body 41 is formed as the lid of back-off, is located at
On catalyst converter 42, catalyst converter 42 is mainly made up of matrix 421 and catalyst 422, after catalyst 422 and bonding agent are made into slurries
It is coated on matrix 421, matrix 421 uses foam silicon carbide ceramics, 1500 DEG C of heatproof, intensity are high, can carry out naked light burning.
Temperature of the controller according to setting, there is provided signal fan 300 and gas valve body (not shown), by the first air inlet
Pipe 21 provides air (as shown in dotted arrow at first gas import 21a in Fig. 1), and the second air inlet pipe 22 provides combustion gas (such as Fig. 1
At middle second gas import 22a shown in solid arrow), further it is well mixed through undue distribution 30 after combustion gas and air mixing,
Then enter flaming combustion device 51 (as shown in the double dashed arrow in air-flow hybrid channel 20 in Fig. 1), controller is provided simultaneously
Signal is burnt to igniter 52, flaming combustion device 51, and preheating catalytic combustion system 40, when urging for catalytic combustion system 40
After the temperature of change device 42 reaches initiation temperature, controller can control blower fan 300 and gas valve body, adjust air-flow so that have flame
Burning is extinguished, and only carries out catalysis burning, air-flow by catalytic combustion system 40 cover body 41, after changing direction so that air-flow is past
Both sides are flowed (as shown in double solid line arrow in exhaust fume collecting hood 10 in Fig. 1), and catalyst converter 42 gives full play to effect.
Catalysis burning belongs to self-sustaining reaction, as long as when temperature reaches more than 700 DEG C, and there is gas/air to supply, it is catalyzed
Burning just can be carried out persistently, and combustion noise is less than 48dB, while security is higher, oxygen acclimatization concentration range is big, and burning relaxes.
The gas heater of embodiment according to a second aspect of the present invention is described below.
Gas heater according to embodiments of the present invention is mainly made up of the burner assembly 100 and heat exchanger tube 200, changes
Heat pipe 200 bending be coiled on the exhaust fume collecting hood 10 of burner assembly 100, cold water is entered by one end of heat exchanger tube 200, by with combustion
There is heat exchange and become hot water in the exhaust fume collecting hood 10 of burner component 100, flowed out finally by the other end, to be user-friendly to.
Gas heater according to embodiments of the present invention, by using the burner assembly 100 of the embodiment of the present invention, has
Efficiently, energy-saving and environmental protection, using it is safe the advantages of.
Specifically described according to a gas heater for specific embodiment of the invention with reference to Fig. 3.
As shown in figure 3, the gas heater of the embodiment of the present invention includes blower fan 300, the burner assembly 100 and heat exchange
Pipe 200.
Cold water is entered in heat exchanger tube 200 by one end of heat exchanger tube 200, and blower fan 300 is that burner assembly 100 provides air,
Enter in burner assembly 100 via the first air inlet pipe 21, combustion gas enters in burner assembly 100 via the second air inlet pipe 22,
Air-flow after burning is flowed by the cover body 41 of catalytic combustion system 40 to both sides, is flowed from the lower end of exhaust fume collecting hood 10 to upper end,
The heat exchanger tube 200 coiled with the outside of exhaust fume collecting hood 10 carries out heat exchange, the water in heating heat exchanger tube 200, by heat exchanger tube 200
Other end outflow, with for users to use, while during flue gas drains into air by the upper end of exhaust fume collecting hood 10.
Gas heater according to embodiments of the present invention, by using the burner assembly 100 of the embodiment of the present invention, has
Efficiently, energy-saving and environmental protection, using it is safe the advantages of.
Burner assembly 100 according to embodiments of the present invention and other compositions of the gas heater with it and operation
All it is for those of ordinary skills known, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can in an appropriate manner be combined in one or more any embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
1. a kind of burner assembly, it is characterised in that including：
Exhaust fume collecting hood；
Gas mixing passage, the gas mixing passage includes first gas import and second gas import, the first gas
One in import and the second gas import is used to be passed through combustion-supporting gas, first gas for being passed through combustion gas and another
The outgassing direction of body import and the outgassing direction of the second gas import are intersecting or relative, the outlet of the gas mixing passage
Connected with the exhaust fume collecting hood；
Distribution net, the distribution net is located in the gas mixing passage and is located at the first gas import and second gas
The downstream of body import；
Catalytic combustion system, the catalytic combustion system is located in the exhaust fume collecting hood, and the catalytic combustion system and the gas
The outlet of body hybrid channel is relative；
Heater, the heater is used to preheat the catalytic combustion system.
2. burner assembly according to claim 1, it is characterised in that the gas mixing passage includes：
First air inlet pipe, one end of first air inlet pipe be formed as the first gas import of the gas mixing passage and
The other end is formed as the outlet of the gas mixing passage.
3. burner assembly according to claim 2, it is characterised in that the exhaust fume collecting hood is located in first air inlet pipe
The second gas import is formed with the side wall of outer part.
4. burner assembly according to claim 2, it is characterised in that the gas mixing passage also includes the second air inlet
Pipe, second air inlet pipe is stretched into first air inlet pipe and adjacent to the entrance of first air inlet pipe, second air inlet
One is formed with the side wall of the part that first air inlet pipe is stretched into pipe or spaced apart multiple second gas are entered
Mouthful.
5. burner assembly according to claim 4, it is characterised in that the second gas in second air inlet pipe
Entrance of the import towards first air inlet pipe.
6. the burner assembly according to any one of claim 1-5, it is characterised in that the heater includes：
Flaming combustion device, at least a portion of the flaming combustion device is located in the gas mixing passage, and described has flame to fire
Burner is used to heat the catalytic combustion system adjacent to the outlet of the gas mixing passage；
Igniter, the igniter is used to light a fire the flaming combustion device adjacent to the flaming combustion device.
7. the burner assembly according to any one of claim 1-5, it is characterised in that the catalytic combustion system bag
Include：
Cover body, the cover body be located in the exhaust fume collecting hood and relative to the gas mixing passage outlet into back-off shape,
And at least a portion of the cover body is spaced apart with the bottom surface in the exhaust fume collecting hood；
Catalyst converter, the catalyst converter is located in the cover body, and relative with the outlet of the gas mixing passage.
8. burner assembly according to claim 7, it is characterised in that the catalyst converter includes：
Matrix；
Catalyst, on the matrix, the carrier of the catalyst converter is modified aluminas, the catalyst converter to the catalyst converter bonding
Active component be at least one in platinum and Pa, the auxiliary agent of the catalyst is at least one in aluminum oxide and iron oxide.
9. burner assembly according to claim 8, it is characterised in that described matrix be metal otter board, ceramic honey comb or
Foam silicon carbide ceramics.
10. burner assembly according to claim 7, it is characterised in that institute is stretched into the outlet of the gas mixing passage
State in cover body, at least a portion of the catalyst converter is relative with the outlet of the gas mixing passage or the catalyst converter is located at institute
State the inner side of the extension of outlet or the outlet of gas mixing passage.
A kind of 11. gas heaters, it is characterised in that including：
Burner assembly, the burner assembly is the burner assembly according to any one of claim 1-10；
Heat exchanger tube, the heat exchanger tube is coiled on the exhaust fume collecting hood of the burner assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210078.XA CN106871120A (en) | 2017-03-31 | 2017-03-31 | Burner assembly and the gas heater with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210078.XA CN106871120A (en) | 2017-03-31 | 2017-03-31 | Burner assembly and the gas heater with it |
Publications (1)
| Publication Number | Publication Date |
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| CN106871120A true CN106871120A (en) | 2017-06-20 |
Family
ID=59160746
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710210078.XA Pending CN106871120A (en) | 2017-03-31 | 2017-03-31 | Burner assembly and the gas heater with it |
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| Country | Link |
|---|---|
| CN (1) | CN106871120A (en) |
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| CN109695955A (en) * | 2017-10-24 | 2019-04-30 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| CN109708299A (en) * | 2017-10-25 | 2019-05-03 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| WO2019129272A1 (en) * | 2017-12-29 | 2019-07-04 | 芜湖美的厨卫电器制造有限公司 | Purification device and gas water heating device |
| CN111780154A (en) * | 2018-01-18 | 2020-10-16 | 芜湖美的厨卫电器制造有限公司 | Control device and method for gas-fired machine and gas water heater |
| WO2023151158A1 (en) * | 2021-03-25 | 2023-08-17 | 芜湖美的厨卫电器制造有限公司 | Burner piece, burner and gas water heater |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190124 Address after: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Applicant after: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Applicant after: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Applicant before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |