CN206073077U - The low NOx flat flames heat-accumulating burner of grading combustion technology - Google Patents
The low NOx flat flames heat-accumulating burner of grading combustion technology Download PDFInfo
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- CN206073077U CN206073077U CN201621105650.3U CN201621105650U CN206073077U CN 206073077 U CN206073077 U CN 206073077U CN 201621105650 U CN201621105650 U CN 201621105650U CN 206073077 U CN206073077 U CN 206073077U
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- burner
- air
- combustion
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- heat storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of low NOx flat flames heat-accumulating burner of grading combustion technology，Including the interior heat storage tank for being provided with heat storage、Burner shell、Air-fuel mixing head、Flat flame is baked bricks、Gas Pipe、Igniter burner，Combuster is set in air-fuel mixing head，Flat flame is provided with parallel shafting room in baking bricks，One end of heat storage tank is connected with air scoop,One end of Gas Pipe is provided with fuel gas inlet with the combustion chamber other end，Igniter burner and combustion chamber，Combustor is connected with parallel shafting room，Air-fuel mixing head includes an air channel、Secondary wind eddy flow multiple-grooved passage，The one end in air channel is connected with burner shell with the combustion chamber other end，Secondary wind eddy flow multiple-grooved passage is socketed in the surface of air-fuel mixing head，The outer rim at secondary wind eddy flow multiple-grooved passage two ends is evenly arranged with wind groove，Wind groove is distributed in the shape of a spiral，One end of wind groove is connected the other end and is connected with parallel shafting room with burner shell，The parallel shafting room is tubaeform helical structure.This utility model can effectively reduce the discharge of NOx and ensure that the flame profile of flat flame burner is constant.
Description
Technical field
This utility model is related to burner field, the low NOx flat flames heat-accumulating burner of espespecially a kind of grading combustion technology.
Background technology
Industrial furnace, when heating to metal stock, can produce substantial amounts of flue gas, and fume emission has been taken away substantial amounts of
Heat of high temperature, causes heat to waste so that the heat utilization efficiency that the energy is produced is relatively low, and high-temperature flue gas discharge also can be to ring
Border pollutes.
Industrial furnace belongs to energy-intensive furnaces, and combustion gas consumption is huge, due to large-scale blank in rolling or forging not
Energy one-shot forming, it is necessary to repeatedly forge ability molding, therefore being rapidly heated for metal stock is had high requirements, while big parison
Material is expensive, the economic loss to be avoided burning and excessive oxidation scaling loss in heating process and be caused.Heat storage type combustion skill
Art can be greatly enhanced preheated air temperature, reduce exhaust gas temperature, the heat taken away during reducing smoke evacuation, so as to reduce heating
The consumption of the stove energy.
Parallel shafting technology can cause uniform temperature field in very big plane, and with very strong radianting capacity, it is main
To deliver heat to be heated workpiece with radiation mode, be conducive to reinforcing stove interior-heat to be transmitted through journey and realize uniformly heating, so as to avoid work
Part burning, due to parallel shafting technology produce flame will not directly burn metal stock, technique allow under conditions of in order to
Firing rate is improved, workpiece can be shortened in the arrangement distance of burner, reduced furnace height, or reduce burner quantity or reduce burner hearth
Width, so can not only significantly improve heating quality, improve productivity of furnace and reduce fuel consumption, moreover it is possible to reduce industrial furnace
Cost of investment.
But due to heat storage by combustion air or gas heating to after high temperature, and with combustion air or gas-preheating
The significantly rising of temperature, flame combustion temperature can also be raised so that the NOx produced in combustion process exponentially rises, aggravation
The pollution caused by atmospheric environment, and flat flame burner during the use of industrial furnace in order to avoid oxidization burning loss is to flame
Shape need it is extremely strict, conventional air or combustion gas grading combustion technology can destroy the integrity of flame, not only not reach
The effect of NOx emission is reduced, flat flame is not become on the contrary, unnecessary loss in production process is caused.
Therefore how air or combustion gas grading combustion technology are perfectly applied in flat flame heat-accumulating burner, and is reduced
In its combustion process, NOx emission becomes a great problem of flat flame heat-accumulating burner.
The content of the invention
To solve the above problems, this utility model provides a kind of grading combustion technology low NOx flat flames heat-accumulating burner, passes through
Fractional combustion passage corresponding with flat flame burner is set, ensures the flame profile of flat flame burner while forming multistage combustion not
Become, the NOx that can be produced in effectively reducing combustion process, while improving heating quality, improve productivity ratio and reduce fuel consumption, also
The cost of investment of industrial furnace can be reduced.
For achieving the above object, the technical solution adopted in the utility model is：A kind of low NOx flat flames of grading combustion technology store
Hot type burner, including the interior heat storage tank for the being provided with heat storage burner shell connected with heat storage tank, the sky being arranged in burner shell
Combustion mixing head, the flat flame being arranged on the outside of air-fuel mixing head are baked bricks, Gas Pipe, igniter burner, and combustion is provided with air-fuel mixing head
Burn room, flat flame bake bricks in be provided with parallel shafting room, one end of heat storage tank is connected with air scoop, and one end of Gas Pipe is arranged on burning
In mouth housing and the combustion chamber other end is provided with fuel gas inlet, igniter burner and combustion chamber, combustor and flat flame
Combustion chamber, the air-fuel mixing head also include air channel, a secondary wind eddy flow multiple-grooved passage, wherein the one end in an air channel
Connect with burner shell with the combustion chamber other end, secondary wind eddy flow multiple-grooved passage is socketed in the surface of air-fuel mixing head, two
The outer rim at secondary wind eddy flow multiple-grooved passage two ends is evenly arranged with wind groove, and wind groove is distributed in the shape of a spiral, one end and the burner shell of wind groove
The body connection other end is connected with parallel shafting room, and the parallel shafting room is tubaeform helical structure.
The beneficial effects of the utility model are：This utility model is by arranging an air channel and secondary in air-fuel mixing head
Wind eddy flow multiple-grooved passage, realizes and air classification is supplied to combustor and parallel shafting room so that partial air is existed with combustion gas
Combustor is mixed to form low oxygen combustion, can effectively reduce fuel initial stage flame temperature in combustion, suppresses nitrogen oxidation
The formation of thing, greatly reduces the discharge of NOx, while being provided by secondary wind eddy flow multiple-grooved passage, partial air passes through two
Secondary wind eddy flow multiple-grooved passage enters parallel shafting room, and indoor unburnt flue gas carries out second-time burning, air Jing with burning
Later cross secondary wind eddy flow multiple-grooved passage to be formed in the parallel shafting room that eddy flow state is baked bricks into flat flame, tie with tubaeform spiral
The parallel shafting room of structure coordinates so that flame is held against furnace wall to the disc-shape of surrounding uniform extension, significantly improves heating
Quality, improves productivity ratio and reduces fuel consumption.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of air-fuel mixing head；
Fig. 3 is that secondary wind eddy flow multiple-grooved passage faces structure chart；
Fig. 4 is the front view that combustion gas accelerates baffle plate；
Fig. 5 is that utility model works state is illustrated.
Drawing reference numeral explanation：1- heat storage tanks；11- heat storages；12- air scoops；13- heat storage tank heat-insulation layers；2- burner shells；
21- burner heat-insulation layers；3- air-fuel mixing heads；31- combustor；Air channel of 32-；33- secondary wind eddy flow multiple-grooved passages；331- wind
Groove；4- flat flames are baked bricks；41- parallel shaftings room；5- Gas Pipes；51- fuel gas inlets；52- combustion gas eddy flow aerofoils；53- combustion gas accelerates
Baffle plate；54- annulus；6- igniter burners；7- cooling ducts；71- throat structures；72- cold wind mouths；73- thermal insulation layers；8-UV is examined
Test tube；9- burner hearths.
Specific embodiment
Refer to shown in Fig. 1-4, this utility model is with regard to a kind of low NOx flat flames heat-accumulating burner of grading combustion technology, bag
In including, the heat storage tank 1 for being provided with heat storage 11, the burner shell 2 connected with heat storage tank 1, the air-fuel being arranged in burner shell 2 are mixed
Syncephalon 3, the flat flame being arranged on the outside of air-fuel mixing head 3 are baked bricks 4, Gas Pipe 5, igniter burner 6, are provided with air-fuel mixing head 3
Combustor 31, flat flame to be baked bricks and be provided with parallel shafting room 41 in 4, and one end of heat storage tank 1 is connected with air scoop 12, Gas Pipe 5
One end is arranged in burner shell 2 and the other end is connected with combustor 31 and is provided with fuel gas inlet 51, igniter burner 6 and combustor
31 connections, combustor 31 are connected with parallel shafting room 41, and the air-fuel mixing head 3 also includes air channel 32, a secondary wind eddy flow
Multiple-grooved passage 33, wherein the one end in an air channel 32 connects the other end with combustor 31 connecting with burner shell 2, secondary wind eddy flow
Multiple-grooved passage 33 is socketed in the surface of air-fuel mixing head 3, and the outer rim at 33 two ends of secondary wind eddy flow multiple-grooved passage is evenly arranged with wind
Groove 331, wind groove 331 are distributed in the shape of a spiral, and one end of wind groove 331 is connected the other end and connected with parallel shafting room 41 with burner shell 2
Logical, the parallel shafting room 4 is tubaeform helical structure.
Compared to existing technology, this utility model is by arranging an air channel 32 and secondary wind rotation in air-fuel mixing head 3
Stream multiple-grooved passage 33, realizes and air classification is supplied to combustor 31 and parallel shafting room 41 so that partial air and combustion gas
Low oxygen combustion is mixed to form in combustor 31, fuel initial stage flame temperature in combustion can be effectively reduced, suppress nitrogen
The formation of oxide, greatly reduces the discharge of NOx, while being provided by secondary wind eddy flow multiple-grooved passage 33, partial air
Carried out into unburnt flue gas in parallel shafting room 41, with combustor 31 by secondary wind eddy flow multiple-grooved passage 33 secondary
Burning, air after the wind groove 331 that 33 internal coiling shape of secondary wind eddy flow multiple-grooved passage is distributed form eddy flow state and enter flat flame
Bake bricks in 4 parallel shafting room 41, coordinate with the parallel shafting room 41 of tubaeform helical structure so that flame is held against furnace wall
To the disc-shape of surrounding uniform extension, heating quality is significantly improved, improve productivity ratio and reduce fuel consumption.
Used as the embodiment that this utility model is more excellent, also including cooling duct 7, the cooling duct 7 is socketed in combustion gas
The surface of pipe 5, one end of cooling duct 7 are provided with throat structure 71, and the Gas Pipe 5 is by throat structure 71 and combustor 31
Connection, the other end of cooling duct 7 set and are connected with cold wind mouth 72.
Using such scheme, by being provided with cooling duct 7 on the surface of Gas Pipe 5,7 external cooling wind of cooling duct,
It is not damaged during protection 5 high temperature of Gas Pipe；In addition one end of cooling duct 7 is provided with throat structure 71, for improving cooling wind
The speed entered in combustor 31 with gas after combustion gas mixing.
Used as the embodiment that this utility model is more excellent, the Gas Pipe 5 also includes combustion gas eddy flow aerofoil 52, the combustion gas
Eddy flow aerofoil 52 is arranged in Gas Pipe 5, and the outer rim on 52 surface of combustion gas eddy flow aerofoil is evenly arranged with blast tube, Gas Pipe 5
Also include that combustion gas accelerates baffle plate 53, the combustion gas to accelerate baffle plate 53 to be arranged on one end of Gas Pipe 5 and the connectivity part of combustor 31,
Combustion gas accelerates the diameter of baffle plate 53 less than the diameter of Gas Pipe 5, and combustion gas accelerates to form annulus between baffle plate 53 and Gas Pipe 5
54。
Using such scheme, combustion gas passes through the blast tube between combustion gas eddy flow aerofoil 52, as cross-sectional area is die-offed, because
This can accelerate the speed of combustion gas entrance, and subsequent combustion gas is accelerated the annulus 54 between baffle plate 53 and Gas Pipe 5, enters one by combustion gas
Step accelerates the speed that combustion gas enters air-fuel mixing head 3, the resistance that high-speed fuel gas are produced in can overcoming combustion process so that combustion gas
Stably can spray in combustor 31.
Used as the embodiment that this utility model is more excellent, 1 inwall of heat storage tank is additionally provided with heat storage tank heat-insulation layer 13, the storage
Hot body 11 is arranged on 13 in heat storage tank heat-insulation layer, and the surface of the cooling duct 7 is provided with thermal insulation layer 73,2 inwall of burner shell
It is provided with burner heat-insulation layer 21.
Using such scheme, heat-insulated, insulation of the heat storage tank heat-insulation layer 13 to heat storage 11；Thermal insulation layer 73 is cold to protect
But it is without damage during 7 high temperature of airduct；Heat-insulated, insulation of the burner heat-insulation layer 21 to burner shell 2.
As the embodiment that this utility model is more excellent, also including control valve, UV detection pipes 8, control system, the UV
One end of detection pipe 8 is arranged in Gas Pipe 5 and is connected with combustor 31, and the other end is arranged on 2 outer and external UV of burner shell
Detector, the control valve are arranged at air scoop 12, fuel gas inlet 51, cold wind mouth 72, wherein control valve, UV detections
Device, igniter burner 6 are connected with control system.
Using such scheme, by control valve is arranged at air scoop 12, fuel gas inlet 51, cold wind mouth 72, and control
System is connected with igniter burner 6, control valve, UV detectors, and the air inflow control of air and combustion gas can be realized by control system
System, the IGNITION CONTROL of igniter burner 6, and the alternation of two burners is controlled in actual use, can by UV detectors
The detection to burner flame is realized, detection signal is sent to into control system, it is corresponding to other control valves by control system
Chain control, it is ensured that burner safety in use.
Below concrete operating principle of the present utility model is illustrated.
This utility model is used in pairs, is arranged on the both sides of burner hearth 9 with being respectively symmetrically and is baked bricks and burner hearth company by flat flame
It is logical.
1）Combustion gas is entered by the fuel gas inlet 51 of the Gas Pipe 5 positioned at left side burner, the now control at fuel gas inlet 51
Valve is opened, and control valve at the fuel gas inlet 51 of right side burner is closed, combustion gas sequentially through combustion gas eddy flow aerofoil 52,
Combustion gas is raised speed into the throat structure 71 of 7 one end of cooling duct after accelerating baffle plate 53；
2）Cooling wind enters cooling duct 7 by the cold wind mouth 72 positioned at left side burner, now the control valve at cold wind mouth 72
Door is opened, and the control valve at the cold wind mouth 72 of right side burner is closed, and cooling wind is mixed at throat structure 71 with combustion gas
Further speed-raising afterwards is injected in combustor 31；
3）Combustion air is entered by the air scoop 12 of the burner positioned at left side, and now the control valve at air scoop 12 is beaten
Open, the control valve at the air scoop 12 of right side burner is opened, combustion air is pre- through 1 inside heat storage 11 of heat storage tank
Heat, the combustion air after now preheating are entered in burner shell 2, and a small amount of high temperature combustion air is entered by logical 32 roads of First air
Combustor 31 inside air-fuel mixing head 3, substantial amounts of high temperature combustion air reach flat flame by 33 passage of secondary wind eddy flow multiple-grooved and burn
Parallel shafting room 41 inside brick 4；
4）A small amount of high temperature combustion air is entered and the mixed gas entered through cooling duct 7 by First air passage 32,
Primary combustion is formed by igniter burner 6 in combustor 31, in the process as gas quantity excess air is not enough, combustion gas is not
Burn completely, flame temperature is low, NOx produces few；
5）The unburnt gas that produces after primary combustion continues forward, and is entered by secondary wind eddy flow multiple-grooved passage 33
The mixing of a large amount of high temperature combustion air eddy flows, burn away inside parallel shafting room 41, due to the effect of eddy flow, after burning
Flame formation flat flame enters burner hearth 9；
6）The high-temperature flue gas produced after fully burning in burner hearth 9 are flowed into positioned at the flat of right side in burner hearth 9
Flame is baked bricks 4 and flat flame combustor 41, then goes through air-fuel mixing head 3, and high-temperature flue gas are logical respectively through secondary wind eddy flow multiple-grooved
Road 33, combustor 31 and an air channel 32 are pooled to inside burner shell 2, subsequently then reach 1 inside heat storage 11 of heat storage tank,
Now by heat storage body 11, high-temperature flue gas are changed into low-temperature flue gas, Jing Guore to high-temperature flue gas after transferring heat to heat storage 11
The low-temperature flue gas produced after exchange are discharged from the air scoop 12 of right side burner；
7）Connect control valve at fuel gas inlet 51, air scoop 12, the cold wind mouth 72, and by control valve, igniter burner
6th, UV detectors are connected with control system, set the cycle of 9 both sides burner work of burner hearth by control system, for example left side burner
During work, positioned at the control valve opening of fuel gas inlet 51, cold wind mouth 7, air scoop 12 at the burner of left side, fire positioned at right side burner
Gas import 51, the control valve closing of cold wind mouth 72, the control valve positioned at the air scoop 12 of right side burner are opened, the burning on right side
Flue gas is discharged by mouth Jing air scoops 12, and after reaching the switching cycle of setting, the working method of two burners is switched over, now right side
Burner works, the smoke evacuation of left side burner, while UV detectors are used to detect flame, and UV detection signals and other control valves
Control mode is accordingly chain, it is ensured that burner safety in use.
Embodiment of above is only that preferred implementation of the present utility model is described, not to this utility model
Scope be defined, on the premise of without departing from this utility model design spirit, this area ordinary skill technical staff to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the guarantor that claims of the present utility model determine
In the range of shield.
Claims (8)
1. a kind of low NOx flat flames heat-accumulating burner of grading combustion technology, including the interior heat storage tank for being provided with heat storage and heat storage tank connect
Logical burner shell, the air-fuel mixing head being arranged in burner shell, the flat flame being arranged on the outside of air-fuel mixing head are baked bricks, combustion gas
Pipe, igniter burner, arrange combuster in air-fuel mixing head, flat flame bake bricks in be provided with parallel shafting room, one end of heat storage tank
Air scoop is connected with, one end of Gas Pipe is arranged in burner shell and the combustion chamber other end is provided with fuel gas inlet,
Igniter burner and combustion chamber, combustor are connected with parallel shafting room, it is characterised in that：The air-fuel mixing head also includes one
Secondary air channel, secondary wind eddy flow multiple-grooved passage, wherein the one end in an air channel is connected with burner shell with the combustion chamber other end,
Secondary wind eddy flow multiple-grooved passage is socketed in the surface of air-fuel mixing head, and the outer rim at secondary wind eddy flow multiple-grooved passage two ends is uniformly arranged
There is wind groove, wind groove is distributed in the shape of a spiral, one end of wind groove is connected the other end and connected with parallel shafting room with burner shell, it is described flat
Flame combustor is tubaeform helical structure.
2. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 1, it is characterised in that also including cold
But airduct, the cooling duct are socketed in the surface of Gas Pipe, and one end of cooling duct is provided with throat structure, the Gas Pipe
By throat structure and combustion chamber, the other end of cooling duct sets and is connected with cold wind mouth.
3. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 2, it is characterised in that the cooling
The surface of airduct is provided with thermal insulation layer.
4. the low NOx flat flames heat-accumulating burner of according to claim 1 and 2 grade of combustion technology, it is characterised in that the combustion gas
Pipe also includes combustion gas eddy flow aerofoil, and the combustion gas eddy flow aerofoil is arranged in Gas Pipe, and the outer rim on combustion gas eddy flow aerofoil surface is equal
It is even to be provided with blast tube.
5. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 1 and 2, it is characterised in that the combustion
Trachea also includes that combustion gas accelerates baffle plate, the combustion gas to accelerate baffle plate setting in Gas Pipe and one end of the connectivity part of combustor, fire
Gas accelerates the diameter of baffle plate less than the diameter of Gas Pipe, and combustion gas accelerates to form annulus between baffle plate and Gas Pipe.
6. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 1, it is characterised in that in heat storage tank
Wall is additionally provided with heat storage tank heat-insulation layer, and the heat storage is arranged in heat storage tank heat-insulation layer.
7. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 1, it is characterised in that burner shell
Inwall is provided with burner heat-insulation layer.
8. the low NOx flat flames heat-accumulating burner of grading combustion technology according to claim 1, it is characterised in that also including control
Valve processed, UV detection pipes, control system, one end of the UV detection pipes be arranged in Gas Pipe and and combustion chamber, it is another
End is arranged on outside burner shell and external UV detectors, and the control valve is arranged at air scoop, fuel gas inlet, cold wind mouth,
Wherein control valve, UV detectors, igniter burner and control system connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621105650.3U CN206073077U (en) | 2016-09-30 | 2016-09-30 | The low NOx flat flames heat-accumulating burner of grading combustion technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621105650.3U CN206073077U (en) | 2016-09-30 | 2016-09-30 | The low NOx flat flames heat-accumulating burner of grading combustion technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206073077U true CN206073077U (en) | 2017-04-05 |
Family
ID=58440236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621105650.3U Withdrawn - After Issue CN206073077U (en) | 2016-09-30 | 2016-09-30 | The low NOx flat flames heat-accumulating burner of grading combustion technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206073077U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287725A (en) * | 2016-09-30 | 2017-01-04 | 佛山市科皓燃烧设备制造有限公司 | Grading combustion technology low NOx flat flame heat-accumulating burner |
| CN110595220A (en) * | 2019-09-30 | 2019-12-20 | 无锡通睿热能科技有限公司 | Flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device |
| CN111649323A (en) * | 2020-06-16 | 2020-09-11 | 江苏泷涛环境技术有限公司 | Low-nitrogen type flat-flame combustor and application thereof |
-
2016
- 2016-09-30 CN CN201621105650.3U patent/CN206073077U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287725A (en) * | 2016-09-30 | 2017-01-04 | 佛山市科皓燃烧设备制造有限公司 | Grading combustion technology low NOx flat flame heat-accumulating burner |
| CN106287725B (en) * | 2016-09-30 | 2018-11-16 | 佛山市科皓燃烧设备制造有限公司 | The low NOx flat flame heat-accumulating burner of grading combustion technology |
| CN110595220A (en) * | 2019-09-30 | 2019-12-20 | 无锡通睿热能科技有限公司 | Flue gas entrainment type low NOx heat accumulation combustion high-temperature heating device |
| CN111649323A (en) * | 2020-06-16 | 2020-09-11 | 江苏泷涛环境技术有限公司 | Low-nitrogen type flat-flame combustor and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170405 Effective date of abandoning: 20181116 |