CN105841150A - Burner, gas water heater and water heating method - Google Patents
Burner, gas water heater and water heating method Download PDFInfo
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- CN105841150A CN105841150A CN201610186933.3A CN201610186933A CN105841150A CN 105841150 A CN105841150 A CN 105841150A CN 201610186933 A CN201610186933 A CN 201610186933A CN 105841150 A CN105841150 A CN 105841150A
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- Prior art keywords
- burner
- gas
- catalytic combustion
- control valve
- water
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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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—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
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- 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
- F24H1/124—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 using fluid fuel
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- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- 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)
- Chemical Kinetics & Catalysis (AREA)
- Gas Burners (AREA)
Abstract
The invention provides a burner, a gas water heater and a water heating method. The burner comprises a combustible gas pre-mixing unit and a plurality of catalytic combustion units, wherein the combustible gas pre-mixing unit is provided with an air inlet, a gas inlet, a gas control valve, a plurality of pre-mixed gas outlets and at least one pre-mixed gas control valve; the gas control valve is connected with the gas inlet, and the pre-mixed gas control valves are connected with the corresponding pre-mixed gas outlets. The catalytic combustion units are connected with the pre-mixed gas outlets. Accordingly, energy can be saved, and the gas utilization rate is increased.
Description
Technical field
The present invention relates to technical field of burner, especially relate to burner, gas heater and the method adding hot water.
Background technology
Along with improving constantly of people's living standard, the continuous progress of industrial technology, vehicle exhaust, industrial waste gas, family
With the carbon monoxide (CO) in gas utensil waste gas and nitrogen oxides (NOx) etc. noxious gas emission enter in air,
Serious environment pollution.These waste gas have the strongest affinity, affine rear generation carbon oxygen blood with the hemoglobin of human body simultaneously
Lactoferrin, thus slacken the function that blood is cured by oxygen therapy to each tissue, severe one is detrimental to health, and even results in life danger.
At domestic gas electrical equipment or utensil, during the use of gas heater and gas furnace etc., in various high-carbon fuel
Aromatic fused ring compound, under flame combustion mode, carry out oxidation reaction and produce carbon monoxide and nitrogen oxides gas
Body, the electronic structure of such stability of compounds makes its stabilization time in flame considerably long, can pass whole electrical equipment
Or the reaction interval of utensil enters in tail gas, cause and combustion tail gas carries CO/NOxDeng imperfect combustion product.These
Imperfect combustion product is mostly the harmful gas that band foul smelling, carcinogenecity or toxicity are the strongest, typically can not be direct by it
Being emitted in air, country also pays much attention to problem of environmental pollution, puts into effect relevant laws regulation successively, it is stipulated that You Haiqi
Body discharge standard.
But, how to be effectively reduced the poisonous and harmfuls such as the nitrogen oxides in effluent of gas heater discharge, carbon monoxide
The content of gas, is still those skilled in the art's urgent problem.
Summary of the invention
The present invention be based on inventor on the fact that and the discovery of problem and understanding make:
Current gas heater, how by being designed burner, uses bias combustion or the mode of fractional combustion,
Or by catalytic combustion flue gas generation oxidation reaction, reduce carbon monoxide and the discharge of nitrogen oxides.Inventor's warp
Cross further investigation and great many of experiments finds, nitrogen oxides can only be reduced by the way of bias combustion or fractional combustion
Discharge, it is impossible to reduce the discharge of CO；And the mode of catalytic combustion flue gas generation oxidation reaction, produce at combustion product gases
After by the way of catalytic degradation, reduce CO content again, but the rising of amount of nitrogen oxides can be caused simultaneously, and lead to
Later the method continuing catalytic degradation is the remedial measure eliminated again after having produced harmful smoke, it is impossible to carry out from source
Control.
It is contemplated that at least solve one of technical problem present in prior art.To this end, the present invention propose can
Realize the burner of flameless catalytic combustion, by controlling air, the ratio of combustion gas, under the effect of catalyst, relatively
Realizing flameless combustion under low initiation temperature, such that it is able to deepen the degree of oxidation of fuel gas, burning degree is relatively complete,
So that oxidized is decomposed into burning end product, produces carbon dioxide and water, and discharge amount of heat, thus
Reduce carbon monoxide and the discharge of nitrogen oxides.
In one aspect of the invention, the present invention proposes a kind of burner.According to embodiments of the invention, this burner bag
Include: fuel gas premixing cell, described fuel gas premixing cell have air intake, fuel gas inlet, gas control valve,
The outlet of multiple premixed gases and at least one premixed gas control valve, wherein, described gas control valve and described fuel gas inlet
Being connected, described premixed gas control valve is connected with the outlet of described premixed gas；And multiple catalytic combustion unit, described catalysis
Fuel element is connected with the outlet of described premixed gas.Thus, it is possible to by controlling air, the ratio of combustion gas, at catalyst
Effect under, under relatively low initiation temperature, realize flameless catalytic combustion, such that it is able to deepen fuel gas oxidation journey
Degree, reduces carbon monoxide and the discharge of nitrogen oxides；Further, this burner can control supply extremely according to practical situation
The premix air of catalytic combustion unit, by being controlled the premix air flow carrying out flameless catalytic combustion, it is achieved to combustion
Burn the control of heat release, and then the energy can be saved, improve combustion gas utilization ratio.
According to embodiments of the invention, described fuel gas premixing cell has a described premixed gas control valve.Thus,
Supply can be realized the most identical to the amount of the premixed gas of multiple catalytic combustion units, it is achieved homogenous combustion.
According to embodiments of the invention, described catalytic combustion unit includes: flameless combustion assembly；And catalytic combustion portion, institute
Stating catalytic combustion portion to be arranged in described flameless combustion assembly, described catalytic combustion portion includes catalyst.Thus, it is possible to urging
Under the effect of agent, under relatively low initiation temperature, realize flameless catalytic combustion, such that it is able to deepen the oxygen of fuel gas
Change degree, reduces carbon monoxide and the discharge of nitrogen oxides.
According to embodiments of the invention, the cross section of described catalytic combustion unit be circular, oval, regular polygon and
At least one erose.Thus, it is possible to according to the shape of practical situation selective catalysis fuel element, improve further
The use function of this burner.
According to embodiments of the invention, the plurality of catalytic combustion unit is arranged on the same cross section of described burner.By
This, can improve the use function of this burner further.
According to embodiments of the invention, the arrangement mode of the plurality of catalytic combustion unit is single arrangement, multiple rows of arrangement or friendship
Fork arrangement.Thus, it is possible to realize the control to combustion zone.
According to embodiments of the invention, described catalytic combustion portion is the catalysis being coated on the inner surface of described flameless combustion assembly
Agent coating.Thus, it is possible to realize the flameless catalytic combustion of catalytic combustion unit.
According to embodiments of the invention, described catalytic combustion portion includes the catalysis burning external member being coated with catalyst coat, described
Catalysis burning external member is fixed on described flameless combustion component internal, and described catalysis burning external member is by cordierite honeycomb ceramic, ferrum
Chromium aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb at least one constitute.Above-mentioned have catalyst coat catalysis burning
External member can utilize catalyst coat to reduce initiation temperature at premixed gas by above-mentioned external member and during burning,
Thus realize the flameless catalytic combustion of catalytic combustion unit.
According to embodiments of the invention, described catalyst be by noble metal catalyst and non-precious metal catalyst at least one
Formed, wherein, described non-precious metal catalyst contain perovskite type rare-earth oxide, Cu, Mn or Co at least it
One；Described noble metal catalyst contain platinum, palladium, rhodium at least one.Above-mentioned catalyst can effectively reduce premixed gas
Initiation temperature, thus realize the flameless catalytic combustion of catalytic combustion unit.
According to embodiments of the invention, described noble metal catalyst includes: carrier and noble metal, and described carrier is three oxidations
Two aluminum, described noble metal includes platinum, palladium and rhodium, and wherein, the mass ratio of described platinum, palladium and rhodium is 1:5:2.Above-mentioned urge
Agent can effectively reduce the initiation temperature of premixed gas, thus realizes the flameless catalytic combustion of catalytic combustion unit.
In another aspect of this invention, the present invention proposes a kind of gas heater.According to embodiments of the invention, this combustion gas
Water heater includes: housing；Foregoing burner, described burner is arranged on described enclosure interior；Heat exchanger, institute
Stating heat exchanger and be located at described enclosure interior, described heat exchanger is connected with described burner；And controller, described control
Device is arranged on described enclosure interior.Thus, it is possible to utilize burner above to realize flameless catalytic combustion, such that it is able to reduce
Nitrogen oxides and the content of carbon monoxide, improve fuel utilization efficiency, it is achieved energy-conserving and environment-protective.
According to embodiments of the invention, this gas heater farther includes: air-supply arrangement, and described air-supply arrangement is arranged on institute
Stating enclosure interior and the air intake with described burner is connected, described air-supply arrangement is DC fan；Exhaust fume collecting hood, described collection
In petticoat pipe is arranged on described housing and it is connected with described heat exchanger；And water supply installation, described water supply installation is handed over described heat
Parallel operation is connected.Thus, it is possible to improve the performance of this gas heater further.
According to embodiments of the invention, described water supply installation includes: water intaking valve, and described water intaking valve is arranged on the housing；
Outlet valve, described outlet valve is arranged on the housing；And water stream channel, described water stream channel one end and described water intaking valve
Being connected, the other end is connected with described outlet valve, is arranged on the outer wall of described heat exchanger to the coiling of described water stream channel.By
This, current are heated by the sensible heat that can effectively utilize in combustion product gases, and then can improve making of this gas heater
Use effect.
According to embodiments of the invention, described water supply installation includes: water intaking valve, and described water intaking valve is arranged on the housing；
Outlet valve, described outlet valve is arranged on the housing；And water stream channel, described water stream channel one end and described water intaking valve
Be connected, the other end is connected with described outlet valve, described water stream channel be at least partially disposed in described internal heat exchanger.
Thus, it is possible to current are heated by the sensible heat effectively utilized in combustion product gases, and then this gas heater can be improved
Using effect.
Gas control valve according to embodiments of the invention, described control device and described burner and premixed gas control valve
Electrical connection.Thus, it is possible to realize the parameter according to user's setting to the control of premix air flow in catalytic combustion unit.
In still another aspect of the invention, the present invention proposes a kind of method utilizing foregoing gas heater to add hot water.
According to embodiments of the invention, the method includes: (1) utilizes controller, makes burner carry out flameless catalytic combustion；(2)
The flue gas utilizing heat exchanger to make described burner produce carries out heat exchange with current, in order to obtain hot water.Thus, it is possible to make this
Gas heater realizes flameless catalytic combustion, and the parameter according to user's setting is empty to premix in catalytic combustion unit in burner
Throughput is controlled, and makes the more energy-conserving and environment-protective of this gas heater.
According to embodiments of the invention, step (1) farther includes: (1-1) utilizes described controller to control described burner
Gas control valve, in order to the Air compress pump of the premixed gas in fuel gas premixing cell is 1.1～1.5；(1-2) will
The supply of described premixed gas, to the plurality of catalytic combustion unit, carries out flameless catalytic combustion in the plurality of catalytic combustion unit
Burn.Thus, it is possible to realize this gas heater to realize flameless catalytic combustion.
According to embodiments of the invention, in step (1-2), according to the water temperature of the described hot water of user setup, by controlling
Device regulates the flow of described premixed gas control valve, in order to control the described premix gas of supply extremely the plurality of catalytic combustion unit
The flow of body.Thus, it is possible to realize homogenous combustion, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is burner structure schematic diagram according to an embodiment of the invention；
Fig. 2 is catalytic combustion unit structural representation according to an embodiment of the invention；
Fig. 3 is catalytic combustion unit structural representation in accordance with another embodiment of the present invention；
Fig. 4 is the catalytic combustion unit structural representation according to another embodiment of the present invention；
Fig. 5-Fig. 8 is the burner cross-sectional structure signal in direction shown in A-A along Fig. 1 according to embodiments of the present invention
Figure；
Fig. 9 and Figure 10 is that the burner in direction shown in A-A along Fig. 1 according to other embodiments of the present invention is transversal
Face structural representation；
Figure 11 is the structural representation of gas heater according to an embodiment of the invention；
Figure 12 is the structural representation of gas heater in accordance with another embodiment of the present invention；
Figure 13 is the structural representation of the gas heater according to another embodiment of the present invention；
Figure 14 is the flow chart of the method adding hot water of the gas heater utilizing one embodiment of the invention；And
Figure 15 is the flow chart of the method adding hot water of the gas heater utilizing another embodiment of the present invention.
Reference:
10: air intake；20: fuel gas inlet；30: gas control valve 40: catalytic combustion unit；50: premixed gas
Outlet；60: premixed gas control valve；70: fuel gas premixing cell；
1: flameless combustion assembly；2: catalytic combustion portion；3: catalyst coat；4: catalysis burning external member；
100: housing；200: burner；300: heat exchanger；310: heat-exchanger fin；400: controller；
500: air-supply arrangement；600: exhaust fume collecting hood；700: water supply installation；710: water intaking valve；720: outlet valve；730:
Water stream channel.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
The present invention proposes a kind of burner.According to embodiments of the invention, with reference to Fig. 1, this burner includes: flammable
Gas pre-mixed unit 70 and multiple catalytic combustion unit 40.Specifically, fuel gas premixing cell 70 has air intake
10, fuel gas inlet 20, gas control valve 30, multiple premixed gas outlet 50 and at least 1 premixed gas control valve 60.
Wherein, gas control valve 30 is connected with fuel gas inlet 20, premixed gas outlet 50 and premixed gas control valve 60 and urging
Change fuel element 40 to be connected.Thus, it is possible to by controlling air, the ratio of combustion gas, under the effect of catalyst, relatively
Realize flameless catalytic combustion under low initiation temperature, such that it is able to deepen the degree of oxidation of fuel gas, reduce an oxidation
Carbon and the discharge of nitrogen oxides；Further, this burner can control supply to catalytic combustion unit according to practical situation
Premix air, by the number of the catalytic combustion unit carrying out flameless catalytic combustion, the control of premixed gas flow, it is achieved
Control to combustion heat release, and then the energy can be saved, improve combustion gas utilization ratio.
Below according to embodiments of the invention, all parts of this burner is described in detail.
Inventor finds through further investigation and great many of experiments, makes fuel gas fire under conditions of catalyst exists
Burn, the initiation temperature of burning can be reduced, and relatively low temperature can effectively reduce the generation of nitrogen oxides.Further,
Catalyst can make fuel gas be enriched in catalyst surface, therefore can improve reaction rate, the utilization of raising fuel
Rate, and fuel degree of oxidation in combustion can be deepened, the beneficially Organic substance in fuel decomposes generation burning
End product carbon dioxide and water, therefore can reduce the content of CO in the combustion product gases of generation, thus effectively reduce
The discharge of harmful gas.Further, the burning completely of fuel can improve burning liberated heat, such that it is able to improve combustion
The efficiency of energy utilization of material.Compared with traditional flaming combustion mode, flameless combustion have safer, noise is little,
Ignition temperature field distribution is uniform, efficiency of combustion is high, CO/NOxThe advantages such as discharge is few, are therefore more applicable for domestic gas
The products such as water heater.Therefore, catalysis burning is combined with flameless combustion mode, it is possible to effectively reduce initiation temperature, fall
Low CO/NOxDischarge etc. harmful gas, it is achieved the efficient utilization of fuel gas, makes that burning is safer, energy-conserving and environment-protective.
It should be noted that in the burner that the present invention proposes, it is also possible to have parts that normal burner had and
Assembly, in order to realize combustion function.Such as, this burner can also have combustion product gases outlet, and combustion product gases outlet is with every
One catalytic combustion unit 40 is connected, in order to the combustion product gases produced in catalytic combustion unit 40 is discharged this burner and carries out
Heat exchange.It will be appreciated to those of skill in the art that catalytic combustion unit 40 is the unit realizing flameless catalytic combustion, therefore
Fuel gas can enter catalytic combustion unit 40 and burn, and the combustion product gases of generation can be by catalytic combustion unit 40
Discharge to carry out heat exchange.In other words, catalytic combustion unit 40 has the structure that gas can circulate, and fuel gas can
Being entered catalytic combustion unit 40 by catalytic combustion unit 40 bottom, the combustion product gases of generation can be discharged from top.
According to embodiments of the invention, in this burner, gas control valve 30 is connected with fuel gas inlet 20 to control to supply
The flow of the combustion gas given to fuel gas premixing cell 70.Thus, it is possible to realize fuel gas premixing cell 70 hollow
Gas and the regulation of gas proportion, make this ratio be in suitable scope, to meet the requirement of flameless combustion mode.Such as,
Can pass through regulating gas control valve 30, the Air compress pump making the premixed gas that combustion gas and air constitute can be
1.1～1.5.According to some embodiments of the present invention, the Air compress pump of premixed gas can be 1.2～1.45.Have above-mentioned
After the combustion gas of ratio and air are sufficiently mixed in fuel gas premixing cell 70, by premixed gas outlet 50 supply extremely
Catalytic combustion unit 40 carries out flameless catalytic combustion.Wherein, gas control valve 30 is connected to control with fuel gas inlet 20
The flow of the premixed gas in entrance catalytic combustion unit 40.Such as, according to one embodiment of present invention, carry in the present invention
In the burner gone out, having 1 premixed gas control valve 60, premixed gas control valve 60 exports 50 with multiple premixed gases
It is connected, in order to realize the premixed gas flow in supply to multiple catalytic combustion units 40 is uniformly controlled, thus realize
Combustion system in parallel.Specifically, multiple premixed gases outlet 50 can be uniformly controlled by a premixed gas control valve 60,
Thus, it is possible to make the premixed gas in supply extremely multiple catalytic combustion units 40 have unified flow, thus ensure multiple urging
The heat changing fuel element 40 burning generation is the most identical, it is achieved homogenous combustion.Utilize premixed gas control valve 60 to premix sky
The flow of gas is controlled, it is possible to achieve control the heat that this burner combustion provides according to actual needs, such that it is able to realize
Energy-conserving and environment-protective.
According to embodiments of the invention, with reference to Fig. 2-Fig. 4, catalytic combustion unit 40 includes flameless combustion assembly 1 and catalysis
Combustion section 2, catalytic combustion portion 2 is arranged in flameless combustion assembly 1, and catalytic combustion portion 2 includes catalyst.Thus, may be used
With under the effect of catalyst, under relatively low initiation temperature, realize flameless catalytic combustion, such that it is able to deepen combustible gas
The degree of oxidation of body, reduces carbon monoxide and the discharge of nitrogen oxides.Specifically, with reference to Fig. 2 and Fig. 3, catalysis
Combustion section 2 can be the catalyst coat being coated on the inner surface of flameless combustion assembly 1.According to embodiments of the invention,
This catalyst coat can cover the portion inner surface (as shown in Figure 2) of catalysis fuel assembly 1, it is also possible to covers catalysis burning
Whole inner surfacies (as shown in Figure 3) of assembly 1.Thus, at premixed gas from bottom to up by catalytic combustion unit 40
During, it is possible to use the catalyst coat of flameless combustion assembly 1 inner surface realizes flameless catalytic combustion.According to the present invention
Other embodiments, with reference to Fig. 4, catalytic combustion portion 2 can also include the catalysis burning set being coated with catalyst coat 3
Part 4, catalysis burning external member 4 is fixed on flameless combustion component internal, catalysis burning external member 4 be by cordierite honeycomb ceramic,
Ferrum-chromium-aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb at least one constitute, catalyst coat 3 is coated in catalysis combustion
Burn on the surface of external member 4.The above-mentioned catalysis burning external member 4 with catalyst coat 3 can be at premixed gas by above-mentioned set
Part during burning, utilizes catalyst coat 3 to reduce initiation temperature, thus realizes the nothing of catalytic combustion unit 40
Flame catalysis burning.
According to embodiments of the invention, above-mentioned catalyst can reduce the initiation temperature of premixed gas and deepen its degree of oxidation.
Specifically, this catalyst can be noble metal carrier catalyst.This noble metal carrier catalyst includes carrier and load
Noble metal.Specifically, carrier can be aluminium sesquioxide, and carried noble metal can include platinum, palladium and rhodium, wherein, platinum,
The mass ratio of palladium and rhodium is 1:5:2.Above-mentioned catalyst can effectively reduce the initiation temperature of premixed gas, is dropped by initiation temperature
As little as 350 degrees Celsius and less, thus realize the flameless catalytic combustion of catalytic combustion unit.Or, above-mentioned catalyst also may be used
Thinking non-precious metal catalyst, this non-precious metal catalyst can contain perovskite type rare-earth oxide, Cu, Mn or Co
At least one.
It should be noted that the concrete shape of catalytic combustion unit 40, size are not particularly limited, those skilled in the art can
To be designed according to practical situation.For example, it is possible to make the multiple catalytic combustion units 40 in this burner be respectively provided with identical
Dimension and shape, such that it is able to facilitate the setting of miscellaneous part in the batch production of catalytic combustion unit 40 and burner；
Catalytic combustion unit 40 can also have the most homogeneous cross-sectional area, in order to premixed gas can be in equal the leading to of width
Road (i.e. catalytic combustion unit 40) occurs flameless catalytic combustion.According to a particular embodiment of the invention, with reference to Fig. 5～Fig. 8,
The cross section of catalytic combustion unit 40 can be circular, oval, regular polygon and at least one erose.
Such as, according to a particular embodiment of the invention, the cross section of catalytic combustion unit can be the shapes such as square, regular hexagonal
Shape.Thus, it is possible to according to the shape of practical situation selective catalysis fuel element 40, such that it is able to improve the use of this burner
Function.
Additionally, in this burner, the concrete arrangement mode of multiple catalytic combustion units 40 is not particularly limited, this area skill
Art personnel can be designed according to practical situation.Such as, according to embodiments of the invention, multiple catalytic combustion units 40 can
To be arranged on the same cross section of burner.Such as, according to embodiments of the invention, it is arranged in the same transversal of burner
The arrangement mode of the multiple catalytic combustion units 40 on face can be single row row (with reference to Fig. 5～Fig. 8), multiple rows of arrangement (ginseng
Examine Fig. 9) or cross arrangement (with reference to Figure 10).
According to embodiments of the invention, the mode that said burner combines owing to using flameless combustion and catalysis burning is carried out
Burning, combustion noise can be less than 48dB, and safety is higher simultaneously；CO concentration of emission in the combustion product gases generated is less than
10ppm, NOxConcentration of emission is less than 10ppm.Further, flameless combustion mode can make combustion thermal efficiency more than 100%.Should
Burner oxygen acclimatization concentration range is big, and burning relaxes, and operating cost is low, convenient operation and management.In sum, the present invention carries
The burner gone out has following characteristics and an advantage:
1, being capable of flameless combustion and catalysis burning combines, safety is high, noxious gas emission is low, energy-conserving and environment-protective.
2, combustion gas can be burnt after fully premixing with air again, thereby may be ensured that combustion even, and efficiency of combustion is high.
3, supply mode realizes heat supply in parallel, and combustion heat supplying is uniform.
In another aspect of this invention, the present invention proposes a kind of gas heater.According to embodiments of the invention, with reference to figure
11, this gas heater includes: housing 100, burner 200, heat exchanger 300 and controller 400.Wherein, combustion
Burner 200 is foregoing burner, and burner 200, heat exchanger 300 and controller 400 are arranged at housing
100 is internal, and heat exchanger 300 is connected with burner 200.Thus, it is possible to utilize previously described burner to realize nonflame
Catalysis burning, such that it is able to reduce nitrogen oxides and the content of carbon monoxide, improves fuel utilization efficiency, it is achieved energy-saving ring
Protect.Owing to this gas heater have employed previously described burner, therefore this gas heater has combustion described above
Whole features of burner and advantage, do not repeat them here.
Below according to the specific embodiment of the present invention, each device of this gas heater is described in detail.
According to embodiments of the invention, with reference to Figure 12, this gas heater can further include: air-supply arrangement 500,
Exhaust fume collecting hood 600 and water supply installation 700.Air-supply arrangement 500 is arranged on housing 100 inside the air with burner 200
Entrance is connected, in order to provide air for burner 200.Specifically, air-supply arrangement 200 can be DC fan.Exhaust fume collecting hood
600 are arranged on above heat exchanger 300 and are connected with heat exchanger 300, in order to collect through heat exchange combustion product gases side by side
Go out this gas heater.Water supply installation 700 is connected with heat exchanger 300, in order to heat exchanger 300 with realizing combustion product gases
With the heat exchange of cold water, export hot water.Thus, it is possible to improve the performance of this gas heater further.
According to embodiments of the invention, with reference to Figure 13, water supply installation 700 includes water intaking valve 710, outlet valve 720 and water
Circulation road 730.One end of water stream channel 730 is connected with water intaking valve 710, and the other end is connected with outlet valve 720.According to this
The specific embodiment of invention, water stream channel 730 can be arranged on the outer wall of heat exchanger 300 with coiling, thus, it is possible to
Current are heated by the sensible heat effectively utilized in combustion product gases, and then can improve the using effect of this gas heater.
Or, it is also possible to heat-exchanger fin 310 is set in heat exchanger 300, at least some of setting of water stream channel 730
Inside heat exchanger 300, heat-exchanger fin 310 is utilized to complete heat exchange.Thus, it is possible to effectively utilize combustion product gases
In sensible heat current are heated, and then the using effect of this gas heater can be improved.
According to embodiments of the invention, control device 400 and the gas control valve of burner 200 and premixed gas control valve
Electrical connection.Thus, it is possible to realize the number of the parameter catalytic combustion unit to working in burner that sets according to user and
The control of catalytic combustion unit burning degree.About in gas control valve and premixed gas control valve and burner 200 other
The annexation of parts, control mode in description in detail made above, do not repeat them here the most.In simple terms, may be used
According to the thermal load demands of complete machine, in conjunction with the load-bearing capacity of single catalytic combustion unit, mate multiple catalytic combustion unit.Respectively
Working method in parallel is used by premixed gas control valve between catalytic combustion unit.Under each operating mode, to multiple catalysis
Fuel element is evenly supplied the flow of fuel gas and air, it is achieved be uniformly distributed burning.When complete machine is in peak load state,
Each catalytic combustion unit is also in peak load state；When complete machine is in minimum load state, each catalytic combustion unit be also
Minimum load state.The load condition of each catalytic combustion unit is identical, complete machine flameholding.Then according to each catalysis burning
Unit burning load state, calculate the catalytic combustion unit quantity needed for sectional combustion region, each sectional combustion region and
The arrangement being suitable for.
In still another aspect of the invention, the present invention proposes a kind of method utilizing foregoing gas heater to add hot water.
According to embodiments of the invention, with reference to Figure 14, the method includes:
S100: flameless catalytic combustion
According to embodiments of the invention, in this step, utilize controller, make burner carry out flameless catalytic combustion.
Specifically, with reference to Figure 15, this step farther includes:
S110: control premix air ratio
According to embodiments of the invention, in this step, controller is utilized to control the gas control valve of burner, in order to flammable
The Air compress pump of the premixed gas in gas pre-mixed unit can be 1.1～1.5.According to some embodiments of the present invention, in advance
The Air compress pump of mixed gas can be 1.2～1.45.Thus, by controlling the combustion supplied to fuel gas premixing cell
The flow of gas, it is possible to achieve to air in fuel gas premixing cell and the regulation of gas proportion, makes this ratio be in suitably
In the range of, to meet the requirement of flameless combustion mode.
S120: supply is to catalytic combustion unit
According to embodiments of the invention, in this step, by premixed gas supply to multiple catalytic combustion units, and multiple
Catalytic combustion unit carries out flameless catalytic combustion.Thus, it is possible to realize this gas heater to realize flameless catalytic combustion.Close
In the concrete structure of catalytic combustion unit, the kind of catalyst and the feature of flameless catalytic combustion, it is previously in detail
Thin description, does not repeats them here.
Specifically, in this step, according to the water temperature of the described hot water of user setup, premixed gas control is regulated by controller
The flow of valve processed, in order to control the flow of the supply extremely premixed gas of multiple catalytic combustion units.Thus, it is possible to realize uniformly
Burning, energy-conserving and environment-protective.Concrete annexation, control about controller, premixed gas control valve and catalytic combustion unit
Principle, is previously detailed description, does not repeats them here.
S200: heat exchange
According to embodiments of the invention, in this step, the flue gas utilizing heat exchanger to make burner produce changes with current
Heat, in order to obtain hot water.Thus, it is possible to make this gas heater realize flameless catalytic combustion, and the ginseng set according to user
The number of several catalytic combustion units to working in burner and the control of catalytic combustion unit burning degree, make this combustion gas heat
Hydrophone more energy-conserving and environment-protective.
It should be noted that in the present invention, term " hot water " refers in particular to the water of output after over-heat-exchanger heat exchange, and it is concrete
Temperature is set by the user, and is not particularly limited.
It should be noted that the gas heater that the present invention proposes has combustion gas heat familiar to those skilled in the art further
Remaining essential element that hydrophone is had is to realize the function of this gas heater.In the present invention, term " essential element "
That refer in particular to have in existing gas heater and be to realize parts necessary to its function, do not repeat them here.Need
It is noted that on the premise of not paying creative work, all that gas heater based on the present invention is made
Improvement belongs to protection scope of the present invention.
In describing the invention, it is to be understood that term " on ", D score, "front", "rear", "left", "right",
Orientation or the position relationship of the instruction such as " interior " are based on orientation shown in the drawings or position relationship, are for only for ease of description
The present invention and simplification describe rather than indicate or imply that the device of indication or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, be therefore not considered as limiting the invention.Additionally, term " first ", " second "
It is only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate that indicated technology is special
The quantity levied.Thus, define " first ", the feature of " second " can be expressed or implicitly include one or more
Individual this feature.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to by between intermediary
Connect connected, can be the connection of two element internals.For the ordinary skill in the art, can concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the description of this specification, reference term " embodiment ", " some embodiments ", " specific embodiment ", " example "
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not necessarily
Refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
These embodiments can be carried out multiple change in the case of the principle of the disengaging present invention and objective, revise, replace and become
Type, the scope of the present invention is limited by claim and equivalent thereof.
Claims (18)
1. a burner, it is characterised in that including:
Fuel gas premixing cell, described fuel gas premixing cell have air intake, fuel gas inlet, gas control valve,
The outlet of multiple premixed gases and at least one premixed gas control valve,
Wherein, described gas control valve is connected with described fuel gas inlet, and described premixed gas control valve goes out with described premixed gas
Mouth is connected；And
Multiple catalytic combustion units, described catalytic combustion unit is connected with the outlet of described premixed gas.
Burner the most according to claim 1, it is characterised in that described fuel gas premixing cell has described in one
Premixed gas control valve.
Burner the most according to claim 1, it is characterised in that described catalytic combustion unit includes:
Flameless combustion assembly；And
Catalytic combustion portion, described catalytic combustion portion is arranged in described flameless combustion assembly, and described catalytic combustion portion includes catalysis
Agent.
Burner the most according to claim 3, it is characterised in that the cross section of described catalytic combustion unit be circular,
Oval, regular polygon and at least one erose.
Burner the most according to claim 3, it is characterised in that the plurality of catalytic combustion unit is arranged in described combustion
On the same cross section of burner.
Burner the most according to claim 5, it is characterised in that the arrangement mode of the plurality of catalytic combustion unit is
Single arrangement, multiple rows of arrangement or cross arrangement.
Burner the most according to claim 3, it is characterised in that described catalytic combustion portion is for being coated in the combustion of described nonflame
Burn the catalyst coat on the inner surface of assembly.
Burner the most according to claim 3, it is characterised in that described catalytic combustion portion includes that being coated with catalyst is coated with
The catalysis burning external member of layer, described catalysis burning external member is fixed on described flameless combustion component internal, described catalysis burning external member
Be by cordierite honeycomb ceramic, ferrum-chromium-aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb at least one constitute.
9. according to the burner described in claim 7 or 8, it is characterised in that described catalyst be by noble metal catalyst with
And non-precious metal catalyst at least one formed,
Wherein, described non-precious metal catalyst contain perovskite type rare-earth oxide, Cu, Mn or Co at least one；
Described noble metal catalyst contain platinum, palladium, rhodium at least one.
Burner the most according to claim 9, it is characterised in that described noble metal catalyst includes: carrier and
Noble metal, described carrier is aluminium sesquioxide, and described noble metal includes platinum, palladium and rhodium,
Wherein, the mass ratio of described platinum, palladium and rhodium is 1:5:2.
11. 1 kinds of gas heaters, it is characterised in that including:
Housing；
Burner according to any one of claim 1～10, described burner is arranged on described enclosure interior；
Heat exchanger, described heat exchanger is located at described enclosure interior, and described heat exchanger is connected with described burner；And
Controller, described controller is arranged on described enclosure interior.
12. gas heaters according to claim 11, it is characterised in that farther include: air-supply arrangement, described
Air-supply arrangement is arranged on described enclosure interior and the air intake with described burner is connected, and described air-supply arrangement is DC fan；
Exhaust fume collecting hood, in described exhaust fume collecting hood is arranged on described housing and is connected with described heat exchanger；And
Water supply installation, described water supply installation is connected with described heat exchanger.
13. gas heaters according to claim 12, it is characterised in that described water supply installation includes:
Water intaking valve, described water intaking valve is arranged on the housing；
Outlet valve, described outlet valve is arranged on the housing；And
Water stream channel, described water stream channel one end is connected with described water intaking valve, and the other end is connected with described outlet valve, described water
It is arranged on the outer wall of described heat exchanger to circulation road coiling.
14. gas heaters according to claim 12, it is characterised in that described water supply installation includes:
Water intaking valve, described water intaking valve is arranged on the housing；
Outlet valve, described outlet valve is arranged on the housing；And
Water stream channel, described water stream channel one end is connected with described water intaking valve, and the other end is connected with described outlet valve, described water
Circulation road be at least partially disposed in described internal heat exchanger.
15. gas heaters according to claim 11, it is characterised in that described control device and described burner
Gas control valve and the electrical connection of premixed gas control valve.
The method that 16. 1 kinds of gas heaters utilized described in any one of claim 11～15 add hot water, it is characterised in that
Including:
(1) utilize controller, make burner carry out flameless catalytic combustion；
(2) flue gas utilizing heat exchanger to make described burner produce carries out heat exchange with current, in order to obtain hot water.
17. methods according to claim 16, it is characterised in that step (1) farther includes:
(1-1) described controller is utilized to control the gas control valve of described burner, in order to pre-in fuel gas premixing cell
The Air compress pump of mixed gas is 1.1～1.5；
(1-2) by the supply of described premixed gas to the plurality of catalytic combustion unit, enter in the plurality of catalytic combustion unit
Row flameless catalytic combustion.
18. methods according to claim 16, it is characterised in that in step (1-2), according to user setup
The water temperature of described hot water, regulates the flow of described premixed gas control valve by controller, in order to control supply to the plurality of
The flow of the described premixed gas of catalytic combustion unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610186933.3A CN105841150B (en) | 2016-03-29 | 2016-03-29 | Burner, gas heater and the method for heating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186933.3A CN105841150B (en) | 2016-03-29 | 2016-03-29 | Burner, gas heater and the method for heating water |
Publications (2)
| Publication Number | Publication Date |
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| CN105841150A true CN105841150A (en) | 2016-08-10 |
| CN105841150B CN105841150B (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610186933.3A Active CN105841150B (en) | 2016-03-29 | 2016-03-29 | Burner, gas heater and the method for heating water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548176A (en) * | 2018-04-27 | 2018-09-18 | 天津征鑫热能设备制造有限公司 | A kind of combined type burner having Mutiple Choice |
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| CN1995889A (en) * | 2005-12-28 | 2007-07-11 | 中国科学院大连化学物理研究所 | Catalytic combustion evaporator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105841150B (en) | 2019-03-12 |
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