CN105841150B - Burner, gas heater and the method for heating water - Google Patents
Burner, gas heater and the method for heating water Download PDFInfo
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- CN105841150B CN105841150B CN201610186933.3A CN201610186933A CN105841150B CN 105841150 B CN105841150 B CN 105841150B CN 201610186933 A CN201610186933 A CN 201610186933A CN 105841150 B CN105841150 B CN 105841150B
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- gas
- catalytic combustion
- burner
- control valve
- premixed
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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 proposes burner, gas heater and the methods for heating water.The burner includes: fuel gas premixing cell, the fuel gas premixing cell has air intake, fuel gas inlet, gas control valve, the outlet of multiple premixed gas and at least one premixed gas control valve, wherein, the gas control valve is connected with the fuel gas inlet, and the premixed gas control valve is connected with premixed gas outlet；And multiple catalytic combustion units, the catalytic combustion unit are connected with premixed gas outlet.Thus, it is possible to can be energy saving, improve combustion gas utilization efficiency.
Description
Technical field
The present invention relates to technical field of burner, more particularly, to burner, gas heater and the method for heating water.
Background technique
With the continuous improvement of people's living standards, industrial technology is constantly progressive, vehicle exhaust, industrial waste gas, household
Carbon monoxide (CO) and nitrogen oxides (NO in gas utensil exhaust gasx) etc. noxious gas emissions enter in atmosphere, seriously pollute ring
Border.The hemoglobin of these exhaust gas and human body has very strong affinity simultaneously, carbonyl haemoglobin is generated after affine, to slacken
The function that blood is cured by oxygen therapy to each tissue, severe one are detrimental to health, and even result in life danger.In domestic gas electric appliance or device
In tool, such as the use process of gas heater and gas furnace, the aromatic fused ring compound in various high-carbon fuel, in flame
Under combustion system, oxidation reaction production carbon monoxide and oxides of nitrogen gas, the stable electronic structure of such compound are carried out
Keep its stabilization time in flame considerably long, entire electric appliance can be passed through or the reaction interval of utensil enter in tail gas, caused
CO/NO is carried in combustion tail gasxEqual imperfect combustions product.These imperfect combustion products are mostly band foul smelling, carcinogenicity
Or the very strong pernicious gas of toxicity, it cannot be generally directly discharged in atmosphere, country also pays much attention to problem of environmental pollution,
Relevant laws regulation is put into effect successively, it is specified that noxious gas emission standard.
However, it is poisonous and harmful how to be effectively reduced nitrogen oxides in effluent, carbon monoxide of gas heater discharge etc.
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 couple on the fact that and problem discovery and understanding make:
Current gas heater, multi-pass are excessively designed burner, by the way of bias combustion or fractional combustion,
Or oxidation reaction is occurred by catalytic combustion flue gas, reduce the discharge of carbon monoxide and nitrogen oxides.Inventor is through too deep
Enter research and many experiments discovery, the discharge of nitrogen oxides can only be reduced by way of bias combustion or fractional combustion, no
The discharge of CO can be reduced；And the mode of oxidation reaction occurs for catalytic combustion flue gas, passes through catalysis drop again after combustion product gases generation
The mode of solution reduces CO content, but will lead to the raising of amount of nitrogen oxides simultaneously, and the method degraded by subsequent catalyst
It is the remedial measure eliminated again after having generated harmful smoke, cannot be controlled from source.
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the invention proposes can
The burner for realizing flameless catalytic combustion, by control air, the ratio of combustion gas, under the effect of the catalyst, at lower
Flameless combustion is realized at a temperature of combustion, so as to deepen the degree of oxidation of fuel gas, burning degree is more complete, to make fuel
Oxygenolysis is burning final 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 invention proposes a kind of burners.According to an embodiment of the invention, the burner
It include: fuel gas premixing cell, the fuel gas premixing cell has air intake, fuel gas inlet, gas control valve, more
A premixed gas outlet and at least one premixed gas control valve, wherein the gas control valve and the fuel gas inlet phase
Even, the premixed gas control valve is connected with premixed gas outlet；And multiple catalytic combustion units, the catalysis burning
Unit is connected with premixed gas outlet.Thus, it is possible to by control air, the ratio of combustion gas, under the effect of the catalyst,
Flameless catalytic combustion is realized under lower initiation temperature, so as to deepen the degree of oxidation of fuel gas, reduces an oxidation
The discharge of carbon and nitrogen oxides；Also, it is pre- to catalytic combustion unit that the burner can control supply according to the actual situation
Mixed air realizes the control to combustion heat release, in turn by controlling the premix air flow for carrying out flameless catalytic combustion
Can be energy saving, improve combustion gas utilization efficiency.
According to an embodiment of the invention, the fuel gas premixing cell has a premixed gas control valve.By
This, may be implemented to supply, realization homogenous combustion all the same to the amount of the premixed gas of multiple catalytic combustion units.
According to an embodiment of the invention, the catalytic combustion unit includes: flameless combustion component；And catalytic combustion portion,
The catalytic combustion portion is arranged in the flameless combustion component, and the catalytic combustion portion includes catalyst.Thus, it is possible to urging
Under the action of agent, flameless catalytic combustion is realized under lower initiation temperature, so as to deepen the oxidation journey of fuel gas
Degree reduces the discharge of carbon monoxide and nitrogen oxides.
According to an embodiment of the invention, the cross section of the catalytic combustion unit be round, ellipse, regular polygon with
And at least one of irregular shape.Thus, it is possible to which the shape of selective catalysis fuel element according to the actual situation, further increases
The use function of the burner.
According to an embodiment of the invention, the multiple catalytic combustion unit is arranged in the same cross section of the burner
On.Thus, it is possible to further increase the use function of the burner.
According to an embodiment of the invention, the arrangement mode of the multiple catalytic combustion unit is single-row arrangement, multiple rows of arrangement
Or cross arrangement.Thus, it is possible to realize the control to combustion zone.
According to an embodiment of the invention, the catalytic combustion portion is on the inner surface coated in the flameless combustion component
Catalyst coat.Thus, it is possible to realize the flameless catalytic combustion of catalytic combustion unit.
According to an embodiment of the invention, the catalytic combustion portion includes the catalysis burning external member coated with catalyst coat,
The catalysis burning external member is fixed on the flameless combustion component internal, and the catalysis burning external member is made pottery by cordierite honeycomb
What at least one of porcelain, ferrum-chromium-aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb were constituted.It is above-mentioned to be urged with catalyst coat
Ignition can be reduced using catalyst coat during premixed gas is by above-mentioned external member and is burnt by changing burning external member
Temperature, to realize the flameless catalytic combustion of catalytic combustion unit.
According to an embodiment of the invention, the catalyst be by noble metal catalyst and non-precious metal catalyst at least
One of formed, wherein the non-precious metal catalyst contain perovskite type rare-earth oxide, Cu, Mn or Co at least it
One；The noble metal catalyst contains at least one of platinum, palladium, rhodium.Rising for premixed gas can be effectively reduced in above-mentioned catalyst
Temperature is fired, to realize the flameless catalytic combustion of catalytic combustion unit.
According to an embodiment of the invention, the noble metal catalyst includes: carrier and noble metal, the carrier is three oxygen
Change two aluminium, the noble metal includes platinum, palladium and rhodium, wherein the mass ratio of the platinum, palladium and rhodium is 1:5:2.Above-mentioned catalysis
The initiation temperature of premixed gas can be effectively reduced in agent, to realize the flameless catalytic combustion of catalytic combustion unit.
In another aspect of this invention, the invention proposes a kind of gas heaters.According to an embodiment of the invention, the combustion
Gas water heater includes: shell；Mentioned-above burner, the burner are arranged in the enclosure interior；Heat exchanger, it is described
Heat exchanger is located at the enclosure interior, and the heat exchanger is connected with the burner；And controller, the controller are set
It sets in the enclosure interior.Thus, it is possible to which the burner using front realizes flameless catalytic combustion, so as to reduce nitrogen oxidation
The content of object and carbon monoxide improves fuel utilization efficiency, realizes energy conservation and environmental protection.
According to an embodiment of the invention, the gas heater further comprises: air supply device, the air supply device setting exist
The enclosure interior is simultaneously connected with the air intake of the burner, and the air supply device is DC fan；Exhaust fume collecting hood, the collection
Petticoat pipe is arranged in the shell and is connected with the heat exchanger；And water supply device, the water supply device and the heat are handed over
Parallel operation is connected.Thus, it is possible to further increase the performance of the gas heater.
According to an embodiment of the invention, the water supply device includes: inlet valve, the inlet valve is arranged in the shell
On；Outlet valve, the outlet valve setting is on the housing；And water stream channel, described water stream channel one end and the water inlet
Valve is connected, and the other end is connected with the outlet valve, and water stream channel coiling ground is arranged on the outer wall of the heat exchanger.By
This, the sensible heat that can be effectively utilized in combustion product gases heats water flow, and then making for the gas heater can be improved
Use effect.
According to an embodiment of the invention, the water supply device includes: inlet valve, the inlet valve is arranged in the shell
On；Outlet valve, the outlet valve setting is on the housing；And water stream channel, described water stream channel one end and the water inlet
Valve is connected, and the other end is connected with the outlet valve, and at least part of the water stream channel is arranged in the internal heat exchanger.
Thus, it is possible to which the sensible heat effectively utilized in combustion product gases heats water flow, and then the gas heater can be improved
Using effect.
According to an embodiment of the invention, the gas control valve and premixed gas control of the control device and the burner
Valve electrical connection processed.Thus, it is possible to realize the control according to parameter set by user to premix air flow in catalytic combustion unit.
In still another aspect of the invention, the invention proposes a kind of sides using mentioned-above gas heater heating water
Method.According to an embodiment of the invention, this method comprises: (1) makes burner carry out flameless catalytic combustion using controller；(2) sharp
It is exchanged heat with the flue gas that heat exchanger generates the burner with water flow, to obtain hot water.Thus, it is possible to make the combustion gas
Water heater realizes flameless catalytic combustion, and according to parameter set by user to premix air stream in catalytic combustion unit in burner
Amount is controlled, and the gas heater is more energy-saving and environmentally friendly.
According to an embodiment of the invention, step (1) further comprises: (1-1) controls the burning using the controller
The gas control valve of device, so that the Air compress pump of the premixed gas in fuel gas premixing cell is 1.1~1.5；(1-2)
The premixed gas is supplied to the multiple catalytic combustion unit, flameless catalytic is carried out in the multiple catalytic combustion unit
Burning.Thus, it is possible to realize that the gas heater realizes flameless catalytic combustion.
According to an embodiment of the invention, according to the water temperature of the hot water of user setting, passing through control in step (1-2)
Device processed adjusts the flow of the premixed gas control valve, to control the premix of supply to the multiple catalytic combustion unit
The flow of gas.Thus, it is possible to realize homogenous combustion, energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is burner structure schematic diagram according to an embodiment of the invention；
Fig. 2 is catalytic combustion unit structural schematic diagram according to an embodiment of the invention；
Fig. 3 is catalytic combustion unit structural schematic diagram in accordance with another embodiment of the present invention；
Fig. 4 is the catalytic combustion unit structural schematic diagram of another embodiment according to the present invention；
Figure 5-8 is the burner cross-sectional structure signal in the direction according to an embodiment of the present invention shown in A-A along Fig. 1
Figure；
Fig. 9 and Figure 10 is the burner cross section in direction shown in A-A along Fig. 1 of other embodiments according to the present invention
Structural schematic diagram；
Figure 11 is the structural schematic diagram of gas heater according to an embodiment of the invention；
Figure 12 is the structural schematic diagram of gas heater in accordance with another embodiment of the present invention；
Figure 13 is the structural schematic diagram of the gas heater of another embodiment according to the present invention；
Figure 14 is the flow chart using the method for the heating water of the gas heater of one embodiment of the invention；And
Figure 15 is the flow chart using the method for the heating water of the gas heater of another embodiment of the present invention.
Appended drawing 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 component；2: catalytic combustion portion；3: catalyst coat；4: catalysis burning external member；
100: shell；200: burner；300: heat exchanger；310: heat-exchanger fin；400: controller；500: air-supply
Device；600: exhaust fume collecting hood；700: water supply device；710: inlet valve；720: outlet valve；730: water stream channel.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
The invention proposes a kind of burners.According to an embodiment of the invention, the burner includes: combustible gas with reference to Fig. 1
Body premixing cell 70 and multiple catalytic combustion units 40.Specifically, fuel gas premixing cell 70 has air intake 10, combustion
Gas entrance 20, gas control valve 30, multiple premixed gas outlet 50 and at least one premixed gas control valve 60.Wherein, combustion gas
Control valve 30 is connected with fuel gas inlet 20, premixed gas outlet 50 and 40 phase of premixed gas control valve 60 and catalytic combustion unit
Even.Thus, it is possible to realize nothing under lower initiation temperature under the effect of the catalyst by the ratio of control air, combustion gas
Flame catalysis burning reduces the discharge of carbon monoxide and nitrogen oxides so as to deepen the degree of oxidation of fuel gas；And
And the burner can control the premix air of supply to catalytic combustion unit according to the actual situation, by urging progress nonflame
Change the control of the number, premixed gas flow of the catalytic combustion unit of burning, realizes the control to combustion heat release, and then can save
The about energy improves combustion gas utilization efficiency.
It is described in detail below according to all parts of the embodiment of the present invention to the burner.
Inventor carries out fuel gas under the conditions of existing for the catalyst by further investigation and many experiments discovery
Burning, can reduce the initiation temperature of burning, and lower temperature can be effectively reduced the generation of nitrogen oxides.Also, it is catalyzed
Agent can make fuel gas be enriched in catalyst surface, therefore the utilization rate that reaction rate can be improved, improve fuel, and can
Deepen the degree of oxidation of fuel in combustion, is conducive to the organic matter in fuel and decomposes generation burning final product titanium dioxide
Carbon and water, therefore the content of CO in the combustion product gases of generation can be reduced, so that the discharge of pernicious gas be effectively reduced.Also,
The heat that burning is released can be improved in the completely burned of fuel, so as to improve the efficiency of energy utilization of fuel.With it is traditional
Flaming combustion mode is compared, flameless combustion have it is safer, noise is small, ignition temperature field distribution uniformly, high combustion efficiency,
CO/NOxThe advantages that discharge is few, therefore it is more applicable for the products such as domestic gas-fired water heater.Therefore, catalysis burning is fired with nonflame
Burning mode combines, and can be effectively reduced initiation temperature, reduces CO/NOxThe discharge of equal pernicious gases, realizes the efficient of fuel gas
It utilizes, makes safer, energy conservation and environmental protection of burning.
It should be noted that can also have component possessed by normal burner in burner proposed by the present invention
And component, to realize combustion function.For example, the burner can also have a combustion product gases outlet, combustion product gases outlet with
Each catalytic combustion unit 40 is connected, and carries out so that the burner is discharged in the combustion product gases generated in catalytic combustion unit 40
Heat exchange.It will be appreciated to those of skill in the art that catalytic combustion unit 40 is the unit for realizing flameless catalytic combustion, therefore can
Combustion gas body can enter catalytic combustion unit 40 and burn, and the combustion product gases of generation can be by being discharged in catalytic combustion unit 40
To exchange heat.In other words, the structure that there is catalytic combustion unit 40 gas can circulate, fuel gas can be by being catalyzed
40 lower part of fuel element enters catalytic combustion unit 40, and the combustion product gases of generation can be discharged from top.
According to an embodiment of the invention, gas control valve 30 is connected to control with fuel gas inlet 20 in the burner
Supply the flow of the combustion gas into fuel gas premixing cell 70.Thus, it is possible to realize hollow to fuel gas premixing cell 70
The adjusting of gas and gas proportion is in the ratio in appropriate range, to meet the requirement of non flame combustion mode.For example,
Can be by regulating gas control valve 30, the Air compress pump for the premixed gas for constituting combustion gas and air is 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.With above-mentioned ratio
After the combustion gas and air of example are sufficiently mixed in fuel gas premixing cell 70, pass through 50 supply of premixed gas outlet to catalysis
Flameless catalytic combustion is carried out in fuel element 40.Wherein, gas control valve 30 is connected to control to enter and to urge with fuel gas inlet 20
Change the flow of the premixed gas in fuel element 40.For example, according to one embodiment of present invention, in burning proposed by the present invention
In device, there is 1 premixed gas control valve 60, premixed gas control valve 60 is connected with multiple premixed gas outlet 50, so as to reality
Now premixed gas flow of the supply into multiple catalytic combustion units 40 is uniformly controlled, to realize burning side in parallel
Formula.Specifically, multiple premixed gas outlets 50 can be uniformly controlled by a premixed gas control valve 60, thus, it is possible to make to supply
There is unified flow to the premixed gas in multiple catalytic combustion units 40, to guarantee that multiple catalytic combustion units 40 fire
It is all the same to burn the heat generated, realizes homogenous combustion.It is controlled using flow of the premixed gas control valve 60 to premix air,
The heat that burner combustion offer is provided according to actual needs may be implemented, so as to realize energy conservation and environmental protection.
According to an embodiment of the invention, catalytic combustion unit 40 includes flameless combustion component 1 and urges with reference to Fig. 2-Fig. 4
Change combustion section 2, catalytic combustion portion 2 is arranged in flameless combustion component 1, and catalytic combustion portion 2 includes catalyst.Thus, it is possible to
Under the action of catalyst, flameless catalytic combustion is realized under lower initiation temperature, so as to deepen the oxidation of fuel gas
Degree reduces the discharge of carbon monoxide and nitrogen oxides.Specifically, with reference to Fig. 2 and Fig. 3, catalytic combustion portion 2 can be painting
Overlay on the catalyst coat on the inner surface of flameless combustion component 1.According to an embodiment of the invention, the catalyst coat can cover
The portion inner surface (as shown in Figure 2) of lid catalysis fuel assembly 1, can also cover whole inner surfaces of catalysis fuel assembly 1 (such as
Shown in Fig. 3).As a result, during premixed gas passes through catalytic combustion unit 40 from bottom to up, flameless combustion can use
The catalyst coat of 1 inner surface of component realizes flameless catalytic combustion.Other embodiments according to the present invention, with reference to Fig. 4, catalysis
Combustion section 2 can also include the catalysis burning external member 4 coated with catalyst coat 3, and catalysis burning external member 4 is fixed on flameless combustion
Component internal, catalysis burning external member 4 is by cordierite honeycomb ceramic, ferrum-chromium-aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb
At least one of constitute, catalyst coat 3 be coated in catalysis burning external member 4 surface on.It is above-mentioned with catalyst coat 3
Catalysis burning external member 4 can be reduced during premixed gas is by above-mentioned external member and is burnt using catalyst coat 3
Initiation temperature, to realize the flameless catalytic combustion of catalytic combustion unit 40.
According to an embodiment of the invention, above-mentioned catalyst can reduce the initiation temperature of premixed gas and deepen its oxidation
Degree.Specifically, which can be noble metal carrier catalyst.The noble metal carrier catalyst include carrier and
Carried noble metal.Specifically, carrier can be aluminum oxide, and carried noble metal may include platinum, palladium and rhodium, wherein platinum,
The mass ratio of palladium and rhodium is 1:5:2.The initiation temperature of premixed gas can be effectively reduced in above-mentioned catalyst, and initiation temperature is dropped
Down to 350 degrees Celsius and hereinafter, to it realize the flameless catalytic combustion of catalytic combustion unit.Alternatively, above-mentioned catalyst can be with
For non-precious metal catalyst, which can be containing perovskite type rare-earth oxide, Cu, Mn or Co at least
One of.
It should be noted that the concrete shape of catalytic combustion unit 40, size are not particularly limited, those skilled in the art
It can be designed according to the actual situation.For example, it is identical that multiple catalytic combustion units 40 in the burner can be made to all have
Dimension and shape, set so as to other component in facilitating the batch production and burner of catalytic combustion unit 40
It sets；Catalytic combustion unit 40 can also have cross-sectional area uniform from top to bottom, so that premixed gas can be equal in width
Channel (i.e. catalytic combustion unit 40) in occur flameless catalytic combustion.According to a particular embodiment of the invention, with reference to Fig. 5~figure
8, the cross section of catalytic combustion unit 40 can be at least one of round, ellipse, regular polygon and irregular shape.
For example, according to a particular embodiment of the invention, the shapes such as the cross section of catalytic combustion unit can be square, regular hexagonal
Shape.Thus, it is possible to the shape of selective catalysis fuel element 40 according to the actual situation, function is used so as to improve the burner
Energy.
In addition, the specific arrangement mode of multiple catalytic combustion units 40 is not particularly limited, this field in the burner
Technical staff can be designed according to the actual situation.For example, according to an embodiment of the invention, multiple catalytic combustion units 40 can
To be arranged on the same cross section of burner.For example, according to an embodiment of the invention, being arranged in the same cross section of burner
On the arrangement modes of multiple catalytic combustion units 40 can be single-row arrangement (refer to Fig. 5~Fig. 8), multiple rows of arrangement (with reference to figure
Or cross arrangement (refer to Figure 10) 9).
According to an embodiment of the invention, said burner is due in such a way that flameless combustion and catalysis burning combine
It burns, combustion noise can be lower than 48dB, while safety is higher；CO concentration of emission in the combustion product gases of generation is lower than
10ppm, NOxConcentration of emission is lower than 10ppm.Also, non flame combustion mode can make combustion thermal efficiency be more than 100%.The burning
Device oxygen acclimatization concentration range is big, and burning mitigates, and operating cost is low, convenient operation and management.In conclusion burning proposed by the present invention
Device have the advantages that following characteristics and:
1, it can be realized flameless combustion and catalysis burning combine, it is highly-safe, noxious gas emission is low, energy-saving ring
It protects.
2, combustion gas and air burn again after capable of sufficiently premixing, and thereby may be ensured that combustion even, high combustion efficiency.
3, heat supply is realized by supply mode in parallel, combustion heat supplying is uniform.
In another aspect of this invention, the invention proposes a kind of gas heaters.According to an embodiment of the invention, with reference to
Figure 11, the gas heater include: shell 100, burner 200, heat exchanger 300 and controller 400.Wherein, burner
200 be mentioned-above burner, and burner 200, heat exchanger 300 and controller 400 are arranged inside shell 100,
Heat exchanger 300 is connected with burner 200.Thus, it is possible to flameless catalytic combustion is realized using previously described burner, thus
The content of nitrogen oxides and carbon monoxide can be reduced, fuel utilization efficiency is improved, realizes energy conservation and environmental protection.Due to combustion gas heat
Hydrophone use previously described burner, therefore the gas heater have burner described above whole features with
And advantage, details are not described herein.
Below according to specific embodiments of the present invention, each device of the gas heater is described in detail.
According to an embodiment of the invention, the gas heater can further include with reference to Figure 12: air supply device 500,
Exhaust fume collecting hood 600 and water supply device 700.100 inside of shell and the air intake with burner 200 is arranged in air supply device 500
It is connected, to provide air for burner 200.Specifically, air supply device 200 can be DC fan.The setting of exhaust fume collecting hood 600 exists
It is connected above heat exchanger 300 and with heat exchanger 300, to collect the combustion product gases by heat exchange and the gas and hot water to be discharged
Device.Water supply device 700 is connected with heat exchanger 300, defeated with the heat exchange for realizing combustion product gases and cold water of sharp heat exchanger 300
Hot water out.Thus, it is possible to further increase the performance of the gas heater.
According to an embodiment of the invention, water supply device 700 includes inlet valve 710, outlet valve 720 and water with reference to Figure 13
Circulation road 730.One end of water stream channel 730 is connected with inlet valve 710, and the other end is connected with outlet valve 720.It is according to the present invention
Specific embodiment, water stream channel 730 can be arranged on the outer wall of heat exchanger 300 with coiling, thus, it is possible to effectively utilize
Sensible heat in combustion product gases heats water flow, and then the using effect of the gas heater can be improved.Alternatively, can be with
Heat-exchanger fin 310 is set in heat exchanger 300, and at least part of water stream channel 730 is arranged in heat exchanger 300
Portion completes to exchange heat using heat-exchanger fin 310.Thus, it is possible to which the sensible heat effectively utilized in combustion product gases carries out water flow
Heating, and then the using effect of the gas heater can be improved.
According to an embodiment of the invention, the gas control valve and premixed gas of control device 400 and burner 200 control
Valve electrical connection.Thus, it is possible to realize according to parameter set by user to the number of the catalytic combustion unit to work in burner with
And the control of catalytic combustion unit burning degree.About its in gas control valve and premixed gas control valve and burner 200
The connection relationship, control mode of its component have been described in detail in front, and details are not described herein.In simple terms, may be used
Multiple catalytic combustion units are matched in conjunction with the load-bearing capacity of single catalytic combustion unit according to the thermal load demands of complete machine.Respectively urge
Change between fuel element through premixed gas control valve using working method in parallel.Under each operating condition, fired to multiple catalysis
The flow that unit is evenly supplied fuel gas and air is burnt, realization is uniformly distributed burning.When complete machine is in peak load state, respectively
Catalytic combustion unit is also in peak load state；When complete machine is in minimum load state, each catalytic combustion unit is also most
Smaller load state.The load condition of each catalytic combustion unit is identical, complete machine flameholding.Then according to each catalytic combustion unit
Burning load state calculates sectional combustion region, catalytic combustion unit quantity needed for each sectional combustion region and is suitble to
Arrangement.
In still another aspect of the invention, the invention proposes a kind of sides using mentioned-above gas heater heating water
Method.According to an embodiment of the invention, with reference to Figure 14, this method comprises:
S100: flameless catalytic combustion
According to an embodiment of the invention, in this step, using controller, burner is made to carry out flameless catalytic combustion.
Specifically, with reference to Figure 15, which further comprises:
S110: control premix air ratio
According to an embodiment of the invention, in this step, the gas control valve of burner is controlled using controller, in order to
The Air compress pump of premixed gas in combustion gas body premixing cell can be 1.1~1.5.Some implementations according to the present invention
Example, the Air compress pump of premixed gas can be 1.2~1.45.Pass through control supply to fuel gas premixing cell as a result,
In combustion gas flow, the adjusting to air and gas proportion in fuel gas premixing cell may be implemented, make at the ratio
In appropriate range, to meet the requirement of non flame combustion mode.
S120: supply to catalytic combustion unit
According to an embodiment of the invention, in this step, premixed gas is supplied to multiple catalytic combustion units, and more
Flameless catalytic combustion is carried out in a catalytic combustion unit.Thus, it is possible to realize that the gas heater realizes flameless catalytic combustion.It closes
In the specific structure of catalytic combustion unit, the type of catalyst and the flameless catalytic combustion the characteristics of, before have been carried out in detail
Thin description, details are not described herein.
Specifically, in this step, according to the water temperature of the hot water of user setting, premixed gas is adjusted by controller
The flow of control valve, to control the flow supplied to the premixed gas of multiple catalytic combustion units.Thus, it is possible to realize uniformly
Burning, energy conservation and environmental protection.It is former about the specific connection relationship of controller, premixed gas control valve and catalytic combustion unit, control
Then, detailed description has been carried out before, details are not described herein.
S200: heat exchange
According to an embodiment of the invention, in this step, being flowed into using the flue gas that heat exchanger generates burner with water
Row heat exchange, to obtain hot water.Thus, it is possible to make the gas heater realize flameless catalytic combustion, and according to set by user
Control of the parameter to the number and catalytic combustion unit burning degree of the catalytic combustion unit to work in burner, makes the combustion gas
Water heater is more energy-saving and environmentally friendly.
It should be noted that in the present invention, term " hot water " refers in particular to the water exported after over-heat-exchanger exchanges heat, tool
Temperature is set by the user, and is not particularly limited.
It should be noted that gas heater proposed by the present invention further has combustion familiar to those skilled in the art
Remaining essential element possessed by gas water heater is to realize the function of the gas heater.In the present invention, term " indispensable portion
That part " refers in particular to have the function of in existing gas heater and be to realize component necessary to it, details are not described herein.
It should be noted that without creative efforts, for made based on gas heater of the invention one
Improvement is cut to all belong to the scope of protection of the present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "inner"
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of the description present invention and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
Unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " specific embodiment ", " show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in one or more embodiment or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (16)
1. a kind of burner characterized by comprising
Fuel gas premixing cell, the fuel gas premixing cell have air intake, fuel gas inlet, gas control valve, more
A premixed gas outlet and a premixed gas control valve,
Wherein, the gas control valve is connected with the fuel gas inlet, multiple premixed gas outlets with the premix gas
Body control valve is connected, and the gas control valve is configured as can control the sky of the premixed gas in the fuel gas premixing cell
Gas consumption coefficient is 1.1~1.5；And
Multiple catalytic combustion units, the catalytic combustion unit are connected with premixed gas outlet, the catalytic combustion unit
It include: flameless combustion component；And catalytic combustion portion, the catalytic combustion portion is arranged in the flameless combustion component, described
Catalytic combustion portion includes catalyst.
2. burner according to claim 1, which is characterized in that the cross section of the catalytic combustion unit is round, ellipse
At least one of round, regular polygon and irregular shape.
3. burner according to claim 1, which is characterized in that the multiple catalytic combustion unit is arranged in the burning
On the same cross section of device.
4. burner according to claim 3, which is characterized in that the arrangement mode of the multiple catalytic combustion unit is single
Row's arrangement, multiple rows of arrangement or cross arrangement.
5. burner according to claim 1, which is characterized in that the catalytic combustion portion is coated in the flameless combustion
Catalyst coat on the inner surface of component.
6. burner according to claim 1, which is characterized in that the catalytic combustion portion includes being coated with catalyst coat
Catalysis burn external member, catalysis burning external member is fixed on the flameless combustion component internal, and catalysis external member of burning is
It is made of at least one of cordierite honeycomb ceramic, ferrum-chromium-aluminum honeycomb web plate and ferrum-chromium-aluminum honeycomb.
7. burner according to claim 5 or 6, which is characterized in that the catalyst be by noble metal catalyst and
What at least one of non-precious metal catalyst was formed,
Wherein, the non-precious metal catalyst contains at least one of perovskite type rare-earth oxide, Cu, Mn or Co；
The noble metal catalyst contains at least one of platinum, palladium, rhodium.
8. burner according to claim 7, which is characterized in that the noble metal catalyst includes: carrier and your gold
Belonging to, the carrier is aluminum oxide, and the noble metal includes platinum, palladium and rhodium,
Wherein, the mass ratio of the platinum, palladium and rhodium is 1:5:2.
9. a kind of gas heater characterized by comprising
Shell；
Burner according to any one of claims 1 to 8, the burner are arranged in the enclosure interior；
Heat exchanger, the heat exchanger are located at the enclosure interior, and the heat exchanger is connected with the burner；And
Controller, the controller are arranged in the enclosure interior.
10. gas heater according to claim 9, which is characterized in that further comprise: air supply device, the air-supply
Device is arranged in the enclosure interior and is connected with the air intake of the burner, and the air supply device is DC fan；
Exhaust fume collecting hood, the exhaust fume collecting hood are arranged in the shell and are connected with the heat exchanger；And
Water supply device, the water supply device are connected with the heat exchanger.
11. gas heater according to claim 10, which is characterized in that the water supply device includes:
Inlet valve, the inlet valve setting is on the housing；
Outlet valve, the outlet valve setting is on the housing；And
Water stream channel, described water stream channel one end are connected with the inlet valve, and the other end is connected with the outlet valve, the water flow
Channel disc is on the outer wall that the heat exchanger is arranged in ground.
12. gas heater according to claim 10, which is characterized in that the water supply device includes:
Inlet valve, the inlet valve setting is on the housing；
Outlet valve, the outlet valve setting is on the housing；And
Water stream channel, described water stream channel one end are connected with the inlet valve, and the other end is connected with the outlet valve, the water flow
At least part in channel is arranged in the internal heat exchanger.
13. gas heater according to claim 9, which is characterized in that the combustion of the control device and the burner
Gas control valve and the electrical connection of premixed gas control valve.
14. a kind of method using the described in any item gas heater heating water of claim 9-13, which is characterized in that packet
It includes:
(1) controller is utilized, the gas control valve of the burner is controlled, so as to the premixed gas in fuel gas premixing cell
Air compress pump be 1.1~1.5, make burner carry out flameless catalytic combustion；
(2) it is exchanged heat using the flue gas that heat exchanger generates the burner with water flow, to obtain hot water.
15. according to the method for claim 14, which is characterized in that step (1) further comprises:
The premixed gas is supplied to the multiple catalytic combustion unit, nonflame is carried out in the multiple catalytic combustion unit
Catalysis burning.
16. according to the method for claim 14, which is characterized in that supply the premixed gas to the multiple catalysis and fire
When burning unit, according to the water temperature of the hot water of user setting, the flow of the premixed gas control valve is adjusted by controller,
To control the flow supplied to the premixed gas of the multiple catalytic combustion unit.
Priority Applications (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 |
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 CN105841150A (en) | 2016-08-10 |
| CN105841150B true CN105841150B (en) | 2019-03-12 |
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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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Families Citing this family (3)
| 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 |
| CN112393241A (en) * | 2019-08-14 | 2021-02-23 | 红热燃烧科技(大连)有限公司 | Flameless combustion engine and control method thereof |
| CN112393240A (en) * | 2019-08-14 | 2021-02-23 | 红热燃烧科技(大连)有限公司 | Catalytic flameless burner |
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| CN1828137A (en) * | 2006-01-18 | 2006-09-06 | 北京工业大学 | Gas fuel catalytic combustor |
| 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 |
| CN101586807A (en) * | 2009-03-16 | 2009-11-25 | 北京建筑工程学院 | Flameless catalytic combustion condensing boiler with near zero pollutant discharge |
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| CN100498061C (en) * | 2007-05-24 | 2009-06-10 | 北京建筑工程学院 | High power gas catalytic burner |
| CN101101114A (en) * | 2007-07-23 | 2008-01-09 | 北京中海润达科贸有限公司 | Quick switching type catalyzed combustion boiler device |
| DE102008036566B4 (en) * | 2008-07-08 | 2010-06-10 | E.G.O. Elektro-Gerätebau GmbH | Burner for use in a gas hob or in an oven |
| CN205640903U (en) * | 2016-03-29 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Combustor and gas heater |
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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 |
| CN1828137A (en) * | 2006-01-18 | 2006-09-06 | 北京工业大学 | Gas fuel catalytic combustor |
| CN101586807A (en) * | 2009-03-16 | 2009-11-25 | 北京建筑工程学院 | Flameless catalytic combustion condensing boiler with near zero pollutant discharge |
| CN102287850A (en) * | 2011-07-15 | 2011-12-21 | 安徽鑫科新材料股份有限公司 | Low-oxygen copper-rod continuous-casting continuous-rolling combustion-control system |
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| CN105841150A (en) | 2016-08-10 |
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