CN110173887A - It is a kind of to premix low nitrogen gas displacement type water heater and its control method - Google Patents
It is a kind of to premix low nitrogen gas displacement type water heater and its control method Download PDFInfo
- Publication number
- CN110173887A CN110173887A CN201910520269.5A CN201910520269A CN110173887A CN 110173887 A CN110173887 A CN 110173887A CN 201910520269 A CN201910520269 A CN 201910520269A CN 110173887 A CN110173887 A CN 110173887A
- Authority
- CN
- China
- Prior art keywords
- gas
- combustion head
- combustion
- water heater
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001873 dinitrogen Inorganic materials 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 208
- 239000007789 gas Substances 0.000 claims description 67
- 239000003546 flue gas Substances 0.000 claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 25
- 239000000567 combustion gas Substances 0.000 claims description 15
- 230000011218 segmentation Effects 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 210000003298 dental enamel Anatomy 0.000 claims description 8
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 210000000232 gallbladder Anatomy 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000005474 detonation Methods 0.000 abstract description 4
- 238000005496 tempering Methods 0.000 abstract description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000004321 preservation Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 flue gas Compound Chemical class 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- 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
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
This application discloses a kind of low nitrogen gas displacement type water heater of premix and its control methods, in order to avoid generating more NO during using burner, coefficient of excess air is set as 1.3, ignition temperature can be made to decline in this way, while the production quantity of NO can be made to reduce.Although meeting the national requirements for environmental protection about NO in this way, since coefficient of excess air is larger, can occur leading to combustion instability from flame phenomenon on combustion head.The embodiment of the present application can be prevented from generating from flame phenomenon, while can make the NO for generating less content in combustion process, can satisfy environmental requirement using the combustion head ontology for being arranged with silk screen.Using non-sealed combustion chamber, using small fire burner, main fire after small fire is first put, detonation will not occur, it is safe and reliable.The embodiment of the present application also uses sectional temperature control device, improves the thermal efficiency, limits chamber temperature, effectively prevent tempering phenomenon, NO is further prevented to increase.
Description
Technical field
This application involves field of water heaters, in particular to a kind of to premix low nitrogen gas displacement type water heater and its controlling party
Method.
Background technique
Raising with country to environmental requirement, electricity generation boiler, Industrial Boiler, the nitrogen oxygen in gas-heating water heater flue gas
Compound content is by 150mg/m3It is restricted to 30mg/m3, traditional electricity generation boiler, Industrial Boiler, gas-heating water heater are not easy to reach
This is required.This requirement is also applied simultaneously for gas displacement type water heater, and in general gas displacement type water heater, combustion
The coefficient of excess air of burner and heat exchanger is generally all selected in 1.1 or so, and ignition temperature is high, high-efficient, but the generation of NO
It is higher therewith, it is not able to satisfy amount of nitrogen oxides 30mg/m3Requirement.
So it is urgently to be resolved as those skilled in the art how to design a kind of water heater that can satisfy environmental requirement
Problem.
Summary of the invention
The application's is designed to provide a kind of low nitrogen gas displacement type water heater of premix and its control method, existing to solve
The problem of having the amount of nitrogen oxides that water heater discharges in technology excessively high, being unsatisfactory for environmental requirement.
In a first aspect, embodiments herein provides a kind of low nitrogen gas displacement type water heater of premix, the water heater
Including outer cover of water heater, liner, combustion chamber, front shroud and combustion system；The combustion system includes two groups of sub-portions of symmetrically burning
Part, the burning subassembly include burner, sectional temperature control device and segmentation controller；
The liner and combustion chamber are from top to bottom arranged in inside the outer cover of water heater, and the liner is internally provided with cigarette
Gas channel, the exhaust gases passes lower end and the combustion chamber；
The outside of the outer cover of water heater is arranged in the front shroud, and the sectional temperature control device and segmentation controller are arranged in institute
It states in front shroud；
The burner includes the first combustion head, the second combustion head, gas-air mixing tube, blower, small fire burner, small
Fire-fighting mouth tracheae, high fire nozzle tracheae, gas valve combination and gas mixer chamber；
First combustion head, the second combustion head, small fire burner are arranged in the combustion chamber, the blower, high fire
Nozzle tracheae, gas valve combination and gas mixer chamber are arranged in the front shroud；
First combustion head and the second combustion head are connected to the gas-air mixing tube, and first combustion head and
Axial direction setting of second combustion head along the gas-air mixing tube；The gas-air mixing tube far from the first combustion head one
End is connect by the gas mixer chamber with the blower；
The outside of the gas-air mixing tube is arranged in the small fire burner, and is located at second combustion head and institute
It states between gas mixer chamber；The small fire burner combines connection, the high fire with the gas valve by small fire nozzle tracheae
One end of nozzle tracheae is connect with the gas mixer chamber, and the other end of the high fire nozzle tracheae combines company with the gas valve
It connects；First combustion head includes combustion head ontology and silk screen；
The combustion head ontology includes top surface and combustion head side wall on combustion head, and top surface is arranged described on the combustion head
The upper end of combustion head side wall；Several apertures are evenly arranged on the combustion head side wall；Grid is provided on the silk screen, it is described
Silk screen is set on the combustion head ontology；The structure of first combustion head and the second combustion head is identical；
The blower, gas valve combination and sectional temperature control device are connect with the segmentation controller.
Further, the area that first combustion head is connected to gas-air mixing tube be less than second combustion head with
The area of gas-air mixing tube connection.
Further, the surface of the combustion head side wall is provided with enamel layer.
Further, the outer wall of the gas-air mixing tube is provided with enamel layer.
Further, the combustion head ontology further includes combustion head pedestal, and the lower end setting of the combustion head side wall is being fired
Burn the interior along upper of head pedestal.
Further, it is provided with 5-6 aperture on every 100 square millimeters of combustion head side wall, the diameter of the aperture is
2mm, the grid on the silk screen are 40 mesh.
Further, first combustion head further includes top board and lower platen；
The top board is bolted to connection the upper end of the top surface on the silk screen and combustion head, and the lower platen is logical
Cross the upper end that bolt is fixedly connected with the combustion head pedestal.
Further, the area of the top board is greater than the area of top surface on the silk screen.Further, the combustion gas is empty
Gas mixing tube is provided with closure plate close to one end of the first combustion head.
Second aspect, the embodiment of the present application provide a kind of control method for premixing low nitrogen gas displacement type water heater, institute
Stating control method includes:
Sectional temperature control device obtains the flue-gas temperature in exhaust gases passes and obtains the first water temperature in liner；
Judge whether flue-gas temperature is greater than default flue-gas temperature；
If flue-gas temperature is greater than default flue-gas temperature, stop the operation of any burning subassembly；
Obtain the first water temperature in liner；
Judge whether the first water temperature is greater than the first default water temperature；
If the first water temperature is greater than the first default water temperature, stop the operation of all burning subassemblies；
After all burning subassemblies are out of service, the second water temperature is obtained in real time；
Judge the second water temperature whether less than the second default water temperature；
If the second water temperature is reruned less than the second default water temperature, all burning subassemblies；
The sectional temperature control device is repeated to obtain the flue-gas temperature in exhaust gases passes and obtain the first water temperature in liner
From the above technical scheme, a kind of low nitrogen gas displacement type water heater of premix provided by the present application and its controlling party
Method, the water heater include outer cover of water heater, liner, combustion chamber, front shroud and combustion system；The combustion system includes two groups pairs
The burning subassembly of title, the burning subassembly include burner, sectional temperature control device and segmentation controller；The burner includes
First combustion head, the second combustion head, gas-air mixing tube, blower, small fire burner, small fire nozzle tracheae, high fire nozzle gas
Pipe, gas valve combination and gas mixer chamber；The combustion head ontology includes top surface and combustion head side wall, the burning on combustion head
The upper end of the combustion head side wall is arranged in top surface on head；Several apertures are evenly arranged on the combustion head side wall；The silk
It is provided with grid on the net, the silk screen is set on the combustion head ontology.In order to avoid being generated during using burner
Coefficient of excess air is set as 1.3, ignition temperature can be made to decline in this way, while can make the production quantity of NO by more NO
It reduces.Although meeting the national requirements for environmental protection about NO in this way, since coefficient of excess air is larger, can go out on combustion head
Now from flame phenomenon, lead to combustion instability.The embodiment of the present application, using the combustion head ontology for being arranged with silk screen, can prevent from
Flame phenomenon generates, while can make the NO that less content is generated in combustion process, can satisfy environmental requirement.Using non-sealed
Combustion chamber is first put main fire after small fire, detonation will not be occurred using small fire burner, safe and reliable.The embodiment of the present application is also
Using sectional temperature control device, the thermal efficiency is improved, chamber temperature is limited, effectively prevent tempering phenomenon, NO is further prevented to increase.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for premixing low nitrogen gas displacement type water heater provided by the present application；
Fig. 2 is the top view of combustion system provided by the present application；
Fig. 3 is the structural schematic diagram of the first combustion head provided by the present application；
Fig. 4 is the expanded view of combustion head side wall provided by the present application.
Illustrate: 1- outer cover of water heater, 2- liner, 21- exhaust gases passes, the combustion chamber 3-, 4- front shroud, 5- combustion system,
51- burn subassembly, 511- burner, the first combustion head of 5111-, the second combustion head of 5112-, 5113- gas-air mixing tube,
51131- closure plate, 5114- blower, 5115- small fire burner, 5116- small fire nozzle tracheae, 5117- high fire nozzle tracheae,
The combination of 5118- gas valve, 5119- gas mixer chamber, 512- sectional temperature control device, 513- segmentation controller, 51111- combustion head sheet
Body, 51112- silk screen, top surface, 51114- combustion head side wall, 51115- aperture, 51116- combustion head bottom on 51113- combustion head
Seat, 51117- top board, 51118- lower platen, the combustion chamber 11- thermal insulation layer, 12- smoke outlet, 121- enclosure, 13- heat preservation are filled out
Material, stagnant of 211- flue, 22- magnesium bar.
Specific embodiment
With reference to Fig. 1, a kind of low nitrogen gas displacement type water heater of premix provided by the embodiments of the present application, the water heater includes
Outer cover of water heater 1, liner 2, combustion chamber 3, front shroud 4 and combustion system 5；As shown in Fig. 2, the combustion system 5 includes two groups pairs
The burning subassembly 51 of title, the burning subassembly 51 include burner 511, sectional temperature control device 512 and segmentation controller 513；
The liner 2 and combustion chamber 3 are from top to bottom arranged in inside the outer cover of water heater 1, are arranged inside the liner 2
There are exhaust gases passes 21,21 lower end of exhaust gases passes is connected to the combustion chamber 3；
Further, flue stagnant 211 is provided in the exhaust gases passes 21.
The outside of the outer cover of water heater 1, the sectional temperature control device 512 and segmentation controller 513 is arranged in the front shroud 4
It is arranged in the front shroud 4；
Specifically, the combustion chamber 3 is by the bottom surface of liner 2, the side wall of outer cover of water heater 1 and outer cover of water heater 1
The space that surrounds of lower end surface.
Combuster thermal insulation layer 11 is arranged in position corresponding with combustion chamber 3 on outer cover of water heater 1.The combustion chamber is heat-insulated
Layer 11 can to avoid in combustion chamber 3 heat scatter and disappear.
The liner 2 is internally provided with magnesium bar 22.The magnesium bar can protect metal part exposed in liner 2, extend
The service life of liner.
Smoke outlet 12 is provided on the outer cover of water heater 1,12 upper end of smoke outlet is provided with enclosure 121, flue gas
Outside water heater is drained by enclosure 121
Position corresponding with liner 2 is internally provided with heat preservation filler 13 on the outer cover of water heater 1.The heat preservation filler 13
Scattering and disappearing for heat in water heater can be reduced.
In the embodiment of the present application, the burner 511 includes the first combustion head 5111, the second combustion head 5112, combustion gas sky
Gas mixing tube 5113, blower 5114, small fire burner 5115, small fire nozzle tracheae 5116, high fire nozzle tracheae 5117, gas valve
Combination 5118 and gas mixer chamber 5119；
First combustion head 5111, the second combustion head 5112, small fire burner 5115 are arranged in the combustion chamber 3,
The blower 5114, high fire nozzle tracheae 5117, gas valve combination 5118 and gas mixer chamber 5119 are arranged in the front shroud 4
It is interior；
First combustion head 5111 and the second combustion head 5112 are connected to the gas-air mixing tube 5113, and described
First combustion head 5111 and the second combustion head 5112 are arranged along the axial direction of the gas-air mixing tube 5113；
Specifically, the gas-air mixing tube 5113 is by mixed combustion gas and air delivery to the first combustion head 5111
In the second combustion head 5112.
The gas-air mixing tube 5113 passes through the gas mixer chamber 5119 far from one end of the first combustion head 5111
It is connect with the blower 5114；In the embodiment of the present application, the air in the gas-air mixing tube 5113 passes through blower 5114
Conveying.
Further, position corresponding with the blower 5114 is provided with air filter mouth, the air on the front shroud 4
Filter layer is provided on filter mouth.
Specifically, gas-air mixing tube 5113, institute can be delivered by blower from the air that air filter mouth enters
The cleaning of the air entered in gas-air mixing tube 5113 can be guaranteed by stating filter layer.
The outside of the gas-air mixing tube 5113 is arranged in the small fire burner 5115, and is located at second combustion
It burns between head 5112 and the gas mixer chamber 5119；The small fire burner 5115 by small fire nozzle tracheae 5116 with it is described
5118 connection of gas valve combination, one end of the high fire nozzle tracheae 5117 are connect with the gas mixer chamber 5119, described big
The other end of fire-fighting mouth tracheae 5117 combines 5118 connections with the gas valve；
Specifically, the small fire nozzle tracheae 5116 is that the small fire burner 5115 provides combustion gas, the high fire nozzle
Tracheae 5117 provides combustion gas for the flame on first combustion head 5111 and the second combustion head 5112.The gas valve combination
5118 can control the conveying of combustion gas in the small fire nozzle tracheae 5116 and high fire nozzle tracheae 5117, the gas valve combination
5118 can control 5117 internal combustion of the small fire nozzle tracheae 5116 and high fire nozzle tracheae under the effect of external segmentation controller
The conveying of gas.The combination of gas valve described in the embodiment of the present application 5118 and segmentation controller cooperation control the small fire nozzle tracheae
Conveying with the intratracheal combustion gas of high fire nozzle is the prior art, and details are not described herein.
Burner detonation in order to prevent, the burner are passed through combustion gas in use, first passing through small fire nozzle tracheae 5116, will
Small fire burner 5115 is lighted, and then recycles blower 5114 and high fire nozzle tracheae 5117 by the first combustion head 5111 and second
Combustion head 5112 is lighted.
It should be noted that since the gas-air mixing tube 5113 runs through the outer cover of water heater 1, in actual production
In, the gas-air mixing tube 5113 has the gap presence with outer cover of water heater 1, the combustion chamber 3 of non-tight is formed, so in order to
Guarantee igniting non-detonating, the embodiment of the present application uses small fire burner 5115, and the combustion chamber 3 of non-tight ensure that small fire is burnt
The needs of air are used when device 5115 is for burning.
As shown in figure 3, first combustion head 5111 includes combustion head ontology 51111 and silk screen 51112；
The combustion head ontology 51111 includes top surface 51113 and combustion head side wall 51114 on combustion head, the combustion head
The upper end of the combustion head side wall 51114 is arranged in upper top surface 51113；As shown in figure 4, on the combustion head side wall 51114
It is even to be provided with several apertures 51115；Grid is provided on the silk screen 51112, the silk screen 51112 is set in the combustion head
On ontology 51111；First combustion head 5111 is identical with the structure of the second combustion head 5112；
It should be noted that the burner in the embodiment of the present application in gas displacement type water heater for applying.Due to
Need to meet the requirement of environmental protection, the generation of NO needs to meet certain range.Burner in the prior art is not easy to reach environmental protection
It is required that.
Since the coefficient of excess air of burner and heat exchanger is generally all selected in 1.1 or so in the prior art, burning
During temperature can achieve 1000 DEG C or more, but at this time in the state of high temperature, NO can be generated largely, can make existing skill
Equipment in art is unsatisfactory for national requirements for environmental protection.
In the embodiment of the present application, in order to avoid generating more NO during using burner, by coefficient of excess air
It is set as 1.3, ignition temperature can be made to decline in this way, while the production quantity of NO can be made to reduce.Although can satisfy about NO
National requirements for environmental protection can occur leading to unstable combustion from flame phenomenon on combustion head but since coefficient of excess air is larger
It is fixed.So being provided with silk screen 51112 in the embodiment of the present application, silk screen 51112 can play the role of stable flame, will not go out
Now from flame the problem of.It is simultaneously 1.3 to meet coefficient of excess air, the embodiment of the present application is additionally provided with blower 5114, can be with
Enable burner full combustion.
The liner 2 of the embodiment of the present application is additionally provided with cooling water inlet and hot water outlet, before water heater is started to work for the first time, leads to
Liner 2 is carried out emptying and fills water by supercooling water inlet and hot water outlet, after cold water is filled, connects combustion gas and power supply, sectional temperature control device
512 in the case where connection, and blower 5114 is started to work.When reaching required work air quantity, segmentation controller 513 starts work
Make, light a fire to small fire burner 5115, after small fire burner 5115 is lighted a fire successfully, big fire-fighting is connected in gas valve combination 5118
After mouth tracheae 5117, the first combustion head 5111 and the second combustion head 5112 are ignited by small fire burner 5115, the first combustion head
5111 and second combustion head 5112 enter normal combustion working condition, water heater starts to work normally.
It should be noted that water heater is in normal work, the required air that burns of small fire burner 5115 passes through air
Filter mouth, gas-air mixing tube 5113 and outer cover of water heater 1 have the gap into combustion chamber 3.When small fire burner 5115 is lighted a fire
Ignite the first combustion head 5111 and the second combustion head 5112 after success, and gas valve combination at this time 5118 is the high fire nozzle tracheae
5117 provide combustion gas, are passed through gas-air after combustion gas is mixed in gas mixer chamber 5119 with the air that blower 5114 provides and mix
Pipe 5113 is closed, first combustion head 5111 and the second combustion head 5112 are eventually entered into.
Flue gas is generated in first combustion head 5111 and the burning of the second combustion head 5112, flue gas is finally logical by exhaust gases passes 21
Cross the discharge of enclosure 121.
Further, the area that first combustion head 5111 is connected to gas-air mixing tube 5113 is less than described second
The area that combustion head 5112 is connected to gas-air mixing tube 5113.
Specifically, since gas-air mixing tube 5113 is arranged in close to one end of the second combustion head 5112 in blower 5114,
So the gas flow phase of the gaseous mixture in order to make the combustion gas entered in the first combustion head 5111 and the second combustion head 5112 and air
Deng the area that first combustion head 5111 is connected to gas-air mixing tube 5113 is set smaller than second combustion head
5112 areas being connected to gas-air mixing tube 5113.
The surface of the combustion head side wall 51114 is provided with enamel layer.
Specifically, since the burner application in the embodiment of the present application is in gas displacement type water heater, when using combustion gas
It will appear condensing drip in displacement type water heater and fall in 51114 surface of combustion head side wall, the surface of combustion head side wall 51114 is set
Be equipped with enamel layer can play the role of it is etch-proof.
The outer wall of the gas-air mixing tube 5113 is provided with enamel layer.
Specifically, since the burner application in the embodiment of the present application is in gas displacement type water heater, when using combustion gas
It will appear condensing drip in displacement type water heater to fall on the outer wall of gas-air mixing tube 5113, so by the gas-air
The outer wall of mixing tube 5113 is provided with enamel layer, can play the role of corrosion-resistant.
The combustion head ontology 51111 further includes combustion head pedestal 51116, and the lower end of the combustion head side wall 51114 is set
It sets in combustion head pedestal 51116 along upper.In order to facilitate the installation in real work, the combustion head ontology of the embodiment of the present application
It is provided with combustion head pedestal 51116.Facilitate the connection of combustion head ontology 51111 Yu gas-air mixing tube 3.
Further, it is provided with 5-6 aperture 51115 on every 100 square millimeters of combustion head side wall 51114, it is described small
The diameter in hole is 2mm, and the grid on the silk screen 51112 is 40 mesh.
Specifically, when being provided with 5-6 aperture 51115 on every 100 square millimeters of combustion head side wall 51114, it is described small
The diameter in hole is 2mm, and the grid on the silk screen 51112 is 40 mesh, under the size, the silk screen 51112 can play compared with
The good effect prevented from flame.
First combustion head further includes top board 51117 and lower platen 51118；
The top board 51117 is bolted to connection the upper of on the silk screen 51112 and combustion head top surface 51113
End, the lower platen 51118 are bolted to connection the upper end of the combustion head pedestal 51116.
The area of the top board 51117 is greater than the area of top surface on the silk screen 51112.
The area of the lower platen 51118 is greater than the face that the combustion head pedestal 51116 is covered in the silk screen 51112
Product.
The gas-air mixing tube 5113 is provided with closure plate 51131 close to one end of the first combustion head 5111.
Specifically, the gas-air mixing tube 5113 is sealing state close to one end of the first combustion head 5111, utilize
Closure plate 51131 seals the gas-air mixing tube 5113 close to one end of the first combustion head 5111.
The blower 5114, gas valve combination 5118 and sectional temperature control device 512 are connect with the segmentation controller 513.
The embodiment of the present application also provides a kind of control method for premixing low nitrogen gas displacement type water heater, the controlling parties
Method includes:
Sectional temperature control device obtains the flue-gas temperature in exhaust gases passes and obtains the first water temperature in liner；
In order to improve the thermal efficiency, the loss of high-temperature flue gas is limited, sectional temperature control device is used.Sectional temperature control device can control
Water heater in the process of running, saves the energy.
Judge whether flue-gas temperature is greater than default flue-gas temperature；
If flue-gas temperature is greater than default flue-gas temperature, stop the operation of any burning subassembly；
Specifically, the default flue-gas temperature can be 140 DEG C, when flue-gas temperature is greater than 140 DEG C, the application will be stopped
One of burning subassembly in two groups of combustion components of the water heater of embodiment, makes the available control of chamber temperature,
Flue-gas temperature is controlled at 120-130 DEG C, NO is not easy to increase at this time, and the first combustion head and the second combustion head are less susceptible to occur tempering now
As, while the higher thermal efficiency is obtained again.Another burning subassembly continues to run.
Obtain the first water temperature in liner；
Judge whether the first water temperature is greater than the first default water temperature；
If the first water temperature is greater than the first default water temperature, stop the operation of all burning subassemblies；
Specifically, the cold water in the water heater is gradually heated, heating temperature is measured by thermostat induction.When first
When water temperature is heated to the first default water temperature, stop the burning subassembly being currently running, water heater enters heat preservation for standby use state.
After all burning subassemblies are out of service, the second water temperature is obtained in real time；
Judge the second water temperature whether less than the second default water temperature；
If the second water temperature is reruned less than the second default water temperature, all burning subassemblies；
Specifically, when the second water temperature is lower than the second default water temperature, that is to say, that the second water temperature at this time cannot reach default
It is required that when, the water in water heater is reheated again.
The sectional temperature control device is repeated to obtain the flue-gas temperature in exhaust gases passes and obtain the first water temperature in liner.
From the above technical scheme, a kind of low nitrogen gas displacement type water heater of premix provided by the present application and its controlling party
Method, the water heater include outer cover of water heater, liner, combustion chamber, front shroud and combustion system；The combustion system includes two groups pairs
The burning subassembly of title, the burning subassembly include burner, sectional temperature control device and segmentation controller；The burner includes
First combustion head, the second combustion head, gas-air mixing tube, blower, small fire burner, small fire nozzle tracheae, high fire nozzle gas
Pipe, gas valve combination and gas mixer chamber；The combustion head ontology includes top surface and combustion head side wall, the burning on combustion head
The upper end of the combustion head side wall is arranged in top surface on head；Several apertures are evenly arranged on the combustion head side wall；The silk
It is provided with grid on the net, the silk screen is set on the combustion head ontology.In order to avoid being generated during using burner
Coefficient of excess air is set as 1.3, ignition temperature can be made to decline in this way, while can make the production quantity of NO by more NO
It reduces.Although meeting the national requirements for environmental protection about NO in this way, since coefficient of excess air is larger, can go out on combustion head
Now from flame phenomenon, lead to combustion instability.The embodiment of the present application, using the combustion head ontology for being arranged with silk screen, can prevent from
Flame phenomenon generates, while can make the NO that less content is generated in combustion process, can satisfy environmental requirement.Using non-sealed
Combustion chamber is first put main fire after small fire, detonation will not be occurred using small fire burner, safe and reliable.The embodiment of the present application is also
Using sectional temperature control device, the thermal efficiency is improved, chamber temperature is limited, effectively prevent tempering phenomenon, NO is further prevented to increase.
Those skilled in the art will readily occur to its of the application after considering specification and practicing application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of low nitrogen gas displacement type water heater of premix, which is characterized in that the water heater includes outer cover of water heater (1), interior
Gallbladder (2), combustion chamber (3), front shroud (4) and combustion system (5)；The combustion system (5) includes two groups of subassemblies that symmetrically burn
(51), the burning subassembly (51) includes burner (511), sectional temperature control device (512) and segmentation controller (513)；
The outer cover of water heater (1) inside is from top to bottom arranged in the liner (2) and combustion chamber (3), and the liner (2) is internal
It is provided with exhaust gases passes (21), exhaust gases passes (21) lower end is connected to the combustion chamber (3)；
The front shroud (4) is arranged in the outside of the outer cover of water heater (1), the sectional temperature control device (512) and segmentation controller
(513) setting is in the front shroud (4)；
The burner (511) includes the first combustion head (5111), the second combustion head (5112), gas-air mixing tube
(5113), blower (5114), small fire burner (5115), small fire nozzle tracheae (5116), high fire nozzle tracheae (5117), combustion gas
Valve group closes (5118) and gas mixer chamber (5119)；
First combustion head (5111), the second combustion head (5112), small fire burner (5115) are arranged in the combustion chamber (3)
Interior, the blower (5114), high fire nozzle tracheae (5117), gas valve combination (5118) and gas mixer chamber (5119) setting exist
In the front shroud (4)；
First combustion head (5111) and the second combustion head (5112) are connected to the gas-air mixing tube (5113), and institute
State the axial direction setting of the first combustion head (5111) and the second combustion head (5112) along the gas-air mixing tube (5113)；It is described
Gas-air mixing tube (5113) far from the first combustion head (5111) one end by the gas mixer chamber (5119) with it is described
Blower (5114) connection；
The small fire burner (5115) is arranged in the outside of the gas-air mixing tube (5113), and is located at second combustion
It burns between head (5112) and the gas mixer chamber (5119)；The small fire burner (5115) passes through small fire nozzle tracheae
(5116) (5118) connection, one end of the high fire nozzle tracheae (5117) and the gas mixer chamber are combined with the gas valve
(5119) it connects, the other end of the high fire nozzle tracheae (5117) combines (5118) connection with the gas valve；Described first
Combustion head (5111) includes combustion head ontology (51111) and silk screen (51112)；
The combustion head ontology (51111) includes top surface on combustion head (51113) and combustion head side wall (51114), the burning
Top surface (51113) are arranged in the upper end of the combustion head side wall (51114) on head；On the combustion head side wall (51114) uniformly
It is provided with several apertures (51115)；Grid is provided on the silk screen (51112), the silk screen (51112) is set in the combustion
It burns on head ontology (51111)；First combustion head (5111) is identical with the structure of the second combustion head (5112)；
The blower (5114), gas valve combination (5118) and sectional temperature control device (512) connect with the segmentation controller (513)
It connects.
2. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that first burning
The area that head (5111) is connected to gas-air mixing tube (5113) is less than second combustion head (5112) and gas-air is mixed
Close the area of pipe (5113) connection.
3. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that the combustion head side
The surface of wall (51114) is provided with enamel layer.
4. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that the gas-air
The outer wall of mixing tube (5113) is provided with enamel layer.
5. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that the combustion head sheet
Body (51111) further includes combustion head pedestal (51116), and the lower end of the combustion head side wall (51114) is arranged in combustion head pedestal
(51116) interior along upper.
6. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that every 100 squares of millis
It is provided with 5-6 aperture (51115) on the combustion head side wall (51114) of rice, the diameter of the aperture is 2mm, the silk screen
(51112) grid on is 40 mesh.
7. a kind of low nitrogen gas displacement type water heater of premix according to claim 5, which is characterized in that first burning
Head further includes top board (51117) and lower platen (51118)；
The top board (51117) is bolted to connection on the silk screen (51112) and combustion head top surface (51113)
Upper end, the lower platen (51118) are bolted to connection the upper end of the combustion head pedestal (51116).
8. a kind of low nitrogen gas displacement type water heater of premix according to claim 7, which is characterized in that the top board
(51117) area is greater than the area of top surface on the silk screen (51112).
9. a kind of low nitrogen gas displacement type water heater of premix according to claim 1, which is characterized in that the gas-air
Mixing tube (5113) is provided with closure plate (51131) close to the one end of the first combustion head (5111).
10. a kind of control method for premixing low nitrogen gas displacement type water heater, which is characterized in that the control method includes:
Sectional temperature control device obtains the flue-gas temperature in exhaust gases passes and obtains the first water temperature in liner；
Judge whether flue-gas temperature is greater than default flue-gas temperature；
If flue-gas temperature is greater than default flue-gas temperature, stop the operation of any burning subassembly；
Judge whether the first water temperature is greater than the first default water temperature；
If the first water temperature is greater than the first default water temperature, stop the operation of all burning subassemblies；
After all burning subassemblies are out of service, the second water temperature is obtained in real time；
Judge the second water temperature whether less than the second default water temperature；
If the second water temperature is reruned less than the second default water temperature, all burning subassemblies；
The sectional temperature control device is repeated to obtain the flue-gas temperature in exhaust gases passes and obtain the first water temperature in liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520269.5A CN110173887B (en) | 2019-06-17 | 2019-06-17 | Premixed low-nitrogen gas positive displacement water heater and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520269.5A CN110173887B (en) | 2019-06-17 | 2019-06-17 | Premixed low-nitrogen gas positive displacement water heater and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173887A true CN110173887A (en) | 2019-08-27 |
| CN110173887B CN110173887B (en) | 2024-03-12 |
Family
ID=67698564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910520269.5A Active CN110173887B (en) | 2019-06-17 | 2019-06-17 | Premixed low-nitrogen gas positive displacement water heater and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110173887B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244493A1 (en) * | 2019-10-17 | 2021-12-09 | 芜湖美的厨卫电器制造有限公司 | Burner and gas water heater |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347013A (en) * | 1993-06-10 | 1994-12-20 | Paloma Ind Ltd | Combustion device |
| US5913675A (en) * | 1997-06-09 | 1999-06-22 | State Industries, Inc. | Low NOx gas burner |
| US6003477A (en) * | 1995-04-04 | 1999-12-21 | Srp 687 Pty. Ltd. | Ignition inhibiting gas water heater |
| JP2002106838A (en) * | 2000-09-29 | 2002-04-10 | Paloma Ind Ltd | Combustor fitted with flame interceptor |
| US20020066420A1 (en) * | 2000-12-04 | 2002-06-06 | Shellenberger Timothy J. | Flammable vapor resistant water heater with low NOx emissions |
| JP2004271064A (en) * | 2003-03-10 | 2004-09-30 | Kyungdong Boiler Co Ltd | Bunsen gas burner for gas water heater |
| CN2766189Y (en) * | 2004-12-17 | 2006-03-22 | 江苏光芒热水器有限公司 | Drainage variable gas-fired quick water heater |
| CN101173821A (en) * | 2006-10-30 | 2008-05-07 | 海尔集团公司 | Blue flare subsection air feed gas water heater |
| CN101576257A (en) * | 2008-05-05 | 2009-11-11 | 原所良 | Burner, burning heating method and burning heating equipment |
| CN201531996U (en) * | 2009-10-22 | 2010-07-21 | 山东爱客多热能科技有限公司 | Gas heating water heater for controlling exhaust gas temperature |
| CN104791791A (en) * | 2015-04-24 | 2015-07-22 | 袁树月 | Fully-premixed metal net combustor |
| CN205782890U (en) * | 2016-04-22 | 2016-12-07 | 安阳化学工业集团有限责任公司 | A kind of Combustion Control System for Circulating Fluidized Bed Boiler with interlock protection |
| CN210107730U (en) * | 2019-06-17 | 2020-02-21 | 景洪 | Premixing low-nitrogen gas positive displacement water heater |
-
2019
- 2019-06-17 CN CN201910520269.5A patent/CN110173887B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347013A (en) * | 1993-06-10 | 1994-12-20 | Paloma Ind Ltd | Combustion device |
| US6003477A (en) * | 1995-04-04 | 1999-12-21 | Srp 687 Pty. Ltd. | Ignition inhibiting gas water heater |
| US5913675A (en) * | 1997-06-09 | 1999-06-22 | State Industries, Inc. | Low NOx gas burner |
| JP2002106838A (en) * | 2000-09-29 | 2002-04-10 | Paloma Ind Ltd | Combustor fitted with flame interceptor |
| US20020066420A1 (en) * | 2000-12-04 | 2002-06-06 | Shellenberger Timothy J. | Flammable vapor resistant water heater with low NOx emissions |
| JP2004271064A (en) * | 2003-03-10 | 2004-09-30 | Kyungdong Boiler Co Ltd | Bunsen gas burner for gas water heater |
| CN2766189Y (en) * | 2004-12-17 | 2006-03-22 | 江苏光芒热水器有限公司 | Drainage variable gas-fired quick water heater |
| CN101173821A (en) * | 2006-10-30 | 2008-05-07 | 海尔集团公司 | Blue flare subsection air feed gas water heater |
| CN101576257A (en) * | 2008-05-05 | 2009-11-11 | 原所良 | Burner, burning heating method and burning heating equipment |
| CN201531996U (en) * | 2009-10-22 | 2010-07-21 | 山东爱客多热能科技有限公司 | Gas heating water heater for controlling exhaust gas temperature |
| CN104791791A (en) * | 2015-04-24 | 2015-07-22 | 袁树月 | Fully-premixed metal net combustor |
| CN205782890U (en) * | 2016-04-22 | 2016-12-07 | 安阳化学工业集团有限责任公司 | A kind of Combustion Control System for Circulating Fluidized Bed Boiler with interlock protection |
| CN210107730U (en) * | 2019-06-17 | 2020-02-21 | 景洪 | Premixing low-nitrogen gas positive displacement water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244493A1 (en) * | 2019-10-17 | 2021-12-09 | 芜湖美的厨卫电器制造有限公司 | Burner and gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110173887B (en) | 2024-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2234388C (en) | A gas appliance for heating fluids | |
| CN107420892A (en) | A kind of outer circulation smoke backflow formula all-premixing burner | |
| CN107448938A (en) | A kind of interior circulating flue gas reverse-flow type all-premixing burner | |
| CN106642646A (en) | Gas water heater and control method thereof | |
| CN110173887A (en) | It is a kind of to premix low nitrogen gas displacement type water heater and its control method | |
| CN103953928B (en) | The energy-saving burner of a kind of pre-mixing gas combustion pressure combustion and steam generator | |
| CN105114953A (en) | Full-mixed fuel gas combusting heater and control method thereof | |
| CN209605198U (en) | A kind of hot air type Smoke-heating device | |
| CN104946833B (en) | Automatic ignition and combustion accompanying device for blast furnace and converter gas desorption tower | |
| CN106949503A (en) | A kind of thermal energy circulates Chinese style frying furnace apparatus | |
| CN2890657Y (en) | Heat storage type pulse burning nozzle | |
| CN207196910U (en) | A kind of gas heater | |
| CN210107730U (en) | Premixing low-nitrogen gas positive displacement water heater | |
| CN2789674Y (en) | Civil atmospheric gas combustion heating furnace | |
| CN204943474U (en) | A kind of full air mixture burning heater | |
| CN209458925U (en) | Full premix combustion device and boiler is premixed entirely | |
| CN107543163A (en) | A kind of fuel burner nozzle device of energy-saving safe | |
| CN107477871B (en) | Heat exchanger, full-premix hot water boiler and control method thereof | |
| CN206280959U (en) | A kind of heat accumulating type multitubular bundles radiant tube combustion device | |
| CN217274827U (en) | Wind-heat air stove with fuel oil and gas mixture | |
| CN210511670U (en) | Novel self-cooling injection type combustor | |
| CN104819574A (en) | Gas water heater and method for removing noise of gas water heater | |
| CN203464347U (en) | Infrared ray energy-saving gas stove | |
| CN109780537A (en) | Full premix combustion device and boiler is premixed entirely | |
| CN216897799U (en) | High-pressure water heater boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240407 Address after: 400035 cave village, Geleshan Town, Shapingba District, Chongqing Patentee after: CHONGQING SANWENNUAN ELECTRIC Co.,Ltd. Country or region after: China Address before: No. 60-3-5, Keyuan Fourth Road, Jiulongpo District, Chongqing, 400041 Patentee before: Jing Hong Country or region before: China |