CN203810456U - Multifunctional biomass stove - Google Patents
Multifunctional biomass stove Download PDFInfo
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- CN203810456U CN203810456U CN201420213224.6U CN201420213224U CN203810456U CN 203810456 U CN203810456 U CN 203810456U CN 201420213224 U CN201420213224 U CN 201420213224U CN 203810456 U CN203810456 U CN 203810456U
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- waste heat
- heat recovery
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Abstract
The utility model discloses a multifunctional biomass stove. The multifunctional biomass stove comprises a hearth formed by heat-resisting materials in an enclosure mode, an air blower, a waste heat recovery cavity, a hot air pipe, an induced draft fan, return pipes and an auxiliary waste heat recovery cavity. A heated body and the top of the hearth are connected in a sealing mode to form a heating area. The waste heat recovery cavity is arranged in the mode of surrounding the hearth and separated from the heating area of the top of the hearth. The hot air pipe is located in the waste heat recovery cavity, one end of the hot air pipe extends out of the waste heat recovery cavity to be communicated with the heating area of the top of the hearth, and the other end of the hot air pipe extends out of the waste heat recovery cavity. The return pipes are located in the auxiliary waste heat recovery cavity, the inlets of the return pipes are communicated with the tail end of the hot air pipe, and the outlets of the return pipes extend out of the auxiliary waste heat recovery cavity to be communicated with the induced draft fan. The return pipes are communicated mutually through a reversing chamber. The top and the bottom of the auxiliary waste heat recovery cavity are communicated with the top and the bottom of the waste heat recovery cavity respectively. The multifunctional biomass stove is convenient to use, and the heat energy generated by burning biomass particle fuel is fully utilized.
Description
Technical field
The utility model relates to a kind of combustion fuel firing equipment, particularly a kind of Multifunctional biomass cooking stove.
Background technology
Combustion furnace adopts coal-fired during as fuel, and burning can produce the noxious gas emissions such as black smoke, carbon monoxide, sulfur dioxide and oxynitrides in air, and contaminated environment is unfavorable for people's physical and mental health; And adopt light diesel, natural gas as fuel or use electric furnace, expensive, use cost is high.Therefore, generally all select biomass granule fuel, the gas harmless producing during biomass granule fuel burning.
At present, use the combustion furnace of biomass granule fuel, its roof of the furnace and heating surface intersection be all generally open wide or be provided with chimney, the heat that heated body or heating surface absorb only has fuel to produce 20% left and right of heat, all the other heats of 80% distribute in air by open ports or chimney, heat utilization ratio is low, waste resource.Secondly, during biomass granule fuel burning, imperfect combustion organic matter forms smog emission in air, obstructs the view, surrounding environment is had a negative impact, while particularly utilizing the combustion furnace cooking of biomass granule fuel, smog makes the blurred vision of eye, uses inconvenient.
Utility model content
The technical problems to be solved in the utility model is to provide the Multifunctional biomass cooking stove that a kind of heat easy to use, smokeless, that biomass granule fuel burning produces can make full use of.
In order to solve the problems of the technologies described above, Multifunctional biomass cooking stove of the present utility model, comprises the burner hearth and the air blast that by exotic material, are surrounded, and described burner hearth bottom is provided with grate, top is provided with for putting the open ports of heated body; Described grate below is provided with dust stratification chamber; Described burner hearth is provided with charging aperture, and this charging aperture is by managing or struggling against and extend outside hearth wall; The air outlet of described air blast is by pipeline and dust stratification chamber UNICOM; Also comprise the secondary chamber of waste heat recovery chamber, warm-air pipe, air-introduced machine, return duct and waste heat recovery; Described heated body and roof of the furnace are tightly connected and form the thermal treatment zone; Described waste heat recovery chamber isolates around burner hearth setting and with the thermal treatment zone of roof of the furnace; Described warm-air pipe is placed in waste heat recovery chamber, and its one end stretches out that waste heat recovery chamber is communicated with the thermal treatment zone of roof of the furnace, the other end stretches out waste heat recovery chamber; Described return duct is placed in the secondary chamber of waste heat recovery and entrance and warm-air pipe end UNICOM, export and stretch out waste heat recovery Fu Qiangyu air-introduced machine UNICOM; The secondary top of chamber of this waste heat recovery is provided with the steam (vapor) outlet with steaming plant UNICOM; End, the secondary chamber of described waste heat recovery is provided with the reversal chamber of return duct, and described return duct is by the mutual UNICOM of reversal chamber; The secondary top of chamber of described waste heat recovery, bottom respectively with waste heat recovery top of chamber, bottom UNICOM.
Described upper furnace inner chamber dwindles formation bocca gradually, and burner hearth cavity is communicated with the thermal treatment zone by this bocca.So that heated body below heat energy is more concentrated, temperature is higher.
Also comprise secondary air channel, the air intake vent of described secondary air channel is communicated with blower outlet, air outlet is communicated with upper furnace bocca.So that the imperfect combustion organic matter that biomass granule fuel produces flame after hearth combustion is by the oxygenation production heat that burns away, biomass granule fuel burning completely, heat production rate is high, and warm-air pipe is discharged the smokeless better effects if of tail gas.
Also comprise and rotate wind apparatus, described in rotate wind apparatus and comprise outer cover, air channel and whirlwind road, described air channel is placed in outer cover inner bottom part, this air channel is provided with a minute air port; Described whirlwind Dao Yufen air port UNICOM, this revolves ducting outlet and is placed in outer cover top, makes from whirlwind road wind out form whirlwind; Describedly rotate the air outlet UNICOM that wind apparatus is set in bocca outer wall and air channel and the secondary air channel of upper furnace.So that the material that in the flame of bocca ejection, imperfect combustion carbon monoxide and carbide etc. can burns better burns complete.
Described outer cover and the inboard wall of burner hearth that rotates wind apparatus is tightly connected.So that entering better, secondary air channel wind out rotates wind apparatus.
Gapped formation incubation cavity between described hearth wall and waste heat recovery cavity wall.So that hearth wall longer service life, keep in repair more convenient,
In described dust stratification chamber, be also provided with even wind net, this even wind net is fixed on the air outlet of air blast discharge pipe and is provided with equally distributed wind hole, and the wind that air blast bloats is evenly entered in burner hearth by even wind net.So that the wind that air blast bloats evenly enters in burner hearth, the biological particles in burner hearth can fully be contacted with oxygen when burning, burn more complete.
Below, described waste heat recovery chamber is provided with dust deposition chamber, and described warm-air pipe end and return duct are by dust deposition chamber UNICOM.So that collect more easily, clear up the dust that remaining cigarette produces after oxidizing fire again.
Also comprise water supply tank, this water supply tank is by autocontrol valve and waste heat recovery chamber or waste heat recovery Fu Qiang UNICOM.So that the secondary chamber Jia Shui of waste heat recovery chamber or waste heat recovery is more convenient, use more convenient.
Adopt structure of the present utility model, owing to being also provided with, also comprise the secondary chamber of waste heat recovery chamber, warm-air pipe, air-introduced machine, return duct and waste heat recovery.In use, waste heat enters warm-air pipe by the water in thermal energy transfer waste heat recovery chamber, and water absorbs heat energy intensification evaporation and produces steam.Again because return duct is placed in the secondary Nei Qie one end, chamber of waste heat recovery and warm-air pipe end UNICOM, the other end stretch out waste heat recovery Fu Qiangyu air-introduced machine UNICOM.From warm-air pipe waste heat out, enter in return duct the water to the secondary chamber of waste heat recovery by thermal energy transfer again, water absorbs the heat energy evaporation that heats up and produces steam.Steam is by the equipment UNICOM of the secondary chamber of waste heat recovery and applying steam, as steam rice-steaming equipment, steam heating apparatus, steam and hot water equipment etc., realized the multifunctional all such as cooking, steamed rice or heating can be carried out simultaneously, heat up water, take full advantage of the heat energy that biomass granule fuel burning produces, saved resource, simple in structure, easy to use.Because heated body or heating surface and roof of the furnace are tightly connected, make the waste heat of roof of the furnace by entering warm-air pipe, water in waste heat recovery chamber, the secondary chamber of waste heat recovery absorbs after heat energy, the time that heat energy in return duct is transmitted to the water in afterheat recycling water tank by backhaul tube wall has also extended, strengthened thermal energy transfer effect, tail gas that return duct is discharged is smokeless, temperature is lower, has approached the normal temperature temperature of natural environment, reclaims, utilizes waste heat more abundant.
Because upper furnace inner chamber dwindles formation bocca gradually, burner hearth cavity is communicated with the thermal treatment zone by this bocca again.In use, the centralized heat energy that biomass granule fuel burning produces is in heated body bottom surface, and heated body bottom surface heating temperature is high, so the thermal efficiency is high.
Again due to gapped formation incubation cavity between hearth wall and waste heat recovery cavity wall.Incubation cavity is the temperature in constant burner hearth effectively, has guaranteed the temperature of the biomass granule fuel carbonization burning in burner hearth.Secondly, when hearth wall damages maintenance, need to or change hearth wall by repairing, because furnace cavity is little, inconvenient operation.Sometimes also need to take the waste heat recovery chamber outside hearth wall apart, maintenance cost is high, between hearth wall and waste heat recovery cavity wall, after gapped formation incubation cavity, only need to change hearth wall, keeps in repair more convenient.
Owing to also comprising secondary air channel, the air intake vent of described secondary air channel is communicated with blower outlet, air outlet is communicated with upper furnace bocca again.In use, the remaining cigarette of roof of the furnace, because anoxic cannot be burnt by complete oxidation, contains organic matter in the tail gas that causes return duct to be discharged, and has smog.After secondary air channel is mended wind oxygenation, the imperfect combustion organic matter that biomass granule fuel produces flame after hearth combustion is by the oxygenation production heat that burns away, biomass granule fuel burning is complete, heat production rate is high, and warm-air pipe is discharged the smokeless better effects if of tail gas.The utility model is simple in structure, easy to use, takes full advantage of the heat energy that biomass granule fuel burning produces, and has saved resource.
Owing to also comprising, rotate wind apparatus, rotate wind apparatus and comprise outer cover, air channel and whirlwind road, air channel is placed in outer cover inner bottom part, this air channel is provided with a minute air port, whirlwind Dao Yufen air port UNICOM, this revolves ducting outlet and is placed in outer cover top, makes from whirlwind road wind out form whirlwind, rotates the air outlet UNICOM that wind apparatus is set in bocca outer wall and air channel and the secondary air channel of upper furnace.During use, secondary air channel wind is out through air channel, there is Jing Fen air port, air channel to enter behind a plurality of whirlwind road from outer cover top out, the material that now a plurality of whirlwind road wind formation rotary wind out can burn carbon monoxide imperfect combustion in the flame of bocca ejection and carbide etc. stirs loose, fully contact and carry out second-time burning with oxygen, more fully thoroughly, the thermal efficiency is higher for oxidizing fire.
Owing to rotating outer cover and the inboard wall of burner hearth of wind apparatus, be tightly connected.Secondary air channel wind out can only be by rotating wind apparatus outer cover top out, form the better effects if of rotary wind, so that the material that in the flame of bocca ejection, imperfect combustion carbon monoxide and carbide etc. can burn stirs loose, fully contact and carry out second-time burning with oxygen, more fully thoroughly, the thermal efficiency is higher for oxidizing fire.
Owing to being also provided with even wind net in dust stratification chamber, this even wind net is fixed on the air outlet of air blast discharge pipe and is provided with equally distributed wind hole, and the wind that air blast bloats is evenly entered in burner hearth by even wind net.The wind that air blast bloats evenly enters burner hearth after even wind net scatters, and the biological particles in burner hearth can full and uniformly contact with oxygen in when burning, burns more completely, more abundant, and heat production rate is higher.
Because below, waste heat recovery chamber is provided with dust deposition chamber, described warm-air pipe end and return duct are by dust deposition chamber UNICOM again.Biomass granule fuel produces imperfect combustion organic matter in flame and enters the micronic dust producing after burning away in warm-air pipe and enter dust deposition chamber deposition after hearth combustion, dust deposition chamber also can be provided with opening and this opening seals by hermatic door or sealing plate, lower this dust deposition chamber opening seals by hermatic door or sealing plate in working order, under off working state, can open hermatic door or sealing plate, by cleaning tool, clear up the laying dust in dust deposition chamber and warm-air pipe, use more convenient, the operation of cleaning laying dust is more convenient, collect more easily, the dust that the remaining cigarette of cleaning produces after oxidizing fire again.
Owing to also comprising water supply tank, this water supply tank and waste heat recovery chamber or waste heat recovery Fu Qiang UNICOM.This water supply tank can pass through pressure valve or other valves and waste heat recovery chamber or waste heat recovery Fu Qiang UNICOM, when water level in the secondary chamber of waste heat recovery chamber or waste heat recovery is too low, the water of water supply tank can fill water by waste heat recovery chamber or the secondary chamber of waste heat recovery, secondary chamber Jia Shui is more convenient for waste heat recovery chamber or waste heat recovery, uses more convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that Fig. 1 is along the cutaway view of A-A line;
Fig. 3 is the enlarged diagram that rotates wind apparatus structure of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
As shown in Figure 1, Figure 2, Figure 3 shows, Multifunctional biomass cooking stove of the present utility model, comprises the burner hearth 11 and the air blast that by exotic material, are surrounded, and described burner hearth bottom is provided with grate 7, top is provided with for putting the open ports of frying pan 1.Grate 7 belows are provided with dust stratification chamber 8.Burner hearth is provided with charging aperture, and this charging aperture is by managing or struggling against outside 2 extension hearth walls.The air outlet of air blast is by pipeline and dust stratification chamber 8 UNICOMs.Also comprise the secondary chamber 4 of waste heat recovery chamber 13, warm-air pipe 10, air-introduced machine 14, return duct 5 and waste heat recovery.Frying pan 1 is tightly connected and forms the thermal treatment zone with roof of the furnace.Waste heat recovery chamber 13 isolates around burner hearth setting and with the thermal treatment zone of roof of the furnace.Warm-air pipe is placed in waste heat recovery chamber 13, and its one end stretches out that waste heat recovery chamber 13 is communicated with the thermal treatment zone of roof of the furnace, the other end stretches out waste heat recovery chamber 13.Return duct 5 is placed in the secondary chamber 4 of waste heat recovery and entrance stretches out the secondary chamber 4 of waste heat recovery and air-introduced machine 14 UNICOMs with warm-air pipe 10 end UNICOMs, outlet.4 tops, the secondary chamber of this waste heat recovery are provided with the steam (vapor) outlet with steaming plant UNICOM.Steaming plant can be steam rice-steaming equipment, steam heating apparatus, steam and hot water equipment etc.4 ends, the secondary chamber of waste heat recovery are provided with the reversal chamber 3 of return duct 5, and return duct 5 is by the mutual UNICOM of reversal chamber 3.4 tops, the secondary chamber of waste heat recovery, bottom respectively with 13 tops, waste heat recovery chamber, bottom UNICOM.Frying pan 1 can be food steamer pot, can be also other the conventional apparatus of heating or the heated body of equipment or the heating surface etc. of needing.
More concentrated for heated body below heat energy, temperature is higher.Burner hearth 11 top inner chambers dwindle formation bocca gradually, and burner hearth cavity is communicated with the thermal treatment zone by this bocca.
The imperfect combustion organic matter that produces flame for biomass granule fuel after hearth combustion is by the oxygenation production heat that burns away, and biomass granule fuel burning completely, heat production rate is high, and warm-air pipe is discharged the smokeless better effects if of tail gas.Also comprise secondary air channel 12, the air intake vent of described secondary air channel is communicated with blower outlet, air outlet is communicated with upper furnace bocca.In actual use, can on secondary air channel 12, control valve be set, for regulating the air-out size of secondary air channel 12.Use the burning of more convenient, biomass granule fuel completely, heat production rate is high.
Loose for material that carbon monoxide imperfect combustion in the flame of bocca ejection and carbide etc. can burns is stirred, fully contact with oxygen and carry out second-time burning, oxidizing fire is more abundant thorough, and the thermal efficiency is higher.Also comprise and rotate wind apparatus, rotate wind apparatus and comprise outer cover 15, air channel 17 and whirlwind road 16.Air channel 17 is placed in outer cover 15 inner bottom parts, and this air channel 17 is provided with a minute air port.Whirlwind Dao16Yu Fen air port UNICOM, these whirlwind road 16 outlets are placed in outer cover 15 tops, make from whirlwind road 16 wind out form whirlwind.Rotate the air outlet UNICOM that wind apparatus is set in bocca outer wall and air channel 17 and the secondary air channel 12 of upper furnace.
For being entered better, secondary air channel wind out rotates wind apparatus.The outer cover 15 that rotates wind apparatus is tightly connected with inboard wall of burner hearth.
In order to form the better effects if of rotary wind.Gapped formation incubation cavity between burner hearth 11 walls and waste heat recovery chamber 13 inwalls.
In order to make the wind that air blast bloats evenly enter in burner hearth, the biological particles in burner hearth fully to be contacted with oxygen when burning, burn more complete.In dust stratification chamber 8, be also provided with even wind net 9, this even wind net 9 is fixed on the air outlet of air blast discharge pipe and is provided with equally distributed wind hole, and the wind that air blast bloats is evenly entered in burner hearth by even wind net 9.
The dust again producing after oxidizing fire in order to collect more easily, clear up remaining cigarette.13 belows, waste heat recovery chamber are provided with dust deposition chamber 6, and described warm-air pipe 10 ends and return duct 5 are by dust deposition chamber 6 UNICOMs.Dust deposition chamber 6 can be provided with opening and this opening seals by hermatic door or sealing plate, make down in working order remaining cigarette turn to, under off working state, can open hermatic door or sealing plate, by cleaning tool, clear up the laying dust in return duct and return duct reversal chamber, easy to use, cleaning laying dust simple operation.
More convenient in order to make the secondary chamber 4 in waste heat recovery chamber 13, waste heat recovery add water, use more convenient.Also comprise water supply tank, this water supply tank is by autocontrol valve and waste heat recovery chamber 13 or waste heat recovery Fu Qiang 4 UNICOMs.
Claims (9)
1. a Multifunctional biomass cooking stove, comprises the burner hearth (11) and the air blast that by exotic material, are surrounded, and described burner hearth bottom is provided with grate (7), top is provided with for putting the open ports of heated body (1); Described grate (7) below is provided with dust stratification chamber (8); Described burner hearth is provided with charging aperture, and this charging aperture is by managing or struggling against outside (2) extension hearth wall; The air outlet of described air blast is by pipeline and dust stratification chamber (8) UNICOM; It is characterized in that: also comprise the secondary chamber (4) of waste heat recovery chamber (13), warm-air pipe (10), air-introduced machine (14), return duct (5) and waste heat recovery; Described heated body and roof of the furnace are tightly connected and form the thermal treatment zone; Described waste heat recovery chamber (13) isolates around burner hearth setting and with the thermal treatment zone of roof of the furnace; Described warm-air pipe is placed in waste heat recovery chamber (13), and its one end stretches out that waste heat recovery chamber (13) is communicated with the thermal treatment zone of roof of the furnace, the other end stretches out waste heat recovery chamber (13); Described return duct (5) is placed in the secondary chamber of waste heat recovery (4) and entrance stretches out the secondary chamber of waste heat recovery (4) and air-introduced machine (14) UNICOM with warm-air pipe (10) end UNICOM, outlet; Top, the secondary chamber (4) of this waste heat recovery is provided with the steam (vapor) outlet with steaming plant UNICOM; End, the secondary chamber (4) of described waste heat recovery is provided with the reversal chamber (3) of return duct (5), and described return duct (5) is by the mutual UNICOM of reversal chamber (3); Top, the secondary chamber (4) of described waste heat recovery, bottom respectively with top, waste heat recovery chamber (13), bottom UNICOM.
2. Multifunctional biomass cooking stove according to claim 1, is characterized in that: described burner hearth (11) top inner chamber dwindles formation bocca gradually, and burner hearth cavity is communicated with the thermal treatment zone by this bocca.
3. Multifunctional biomass cooking stove according to claim 2, is characterized in that: also comprise secondary air channel (12), the air intake vent of described secondary air channel is communicated with blower outlet, air outlet is communicated with upper furnace bocca.
4. Multifunctional biomass cooking stove according to claim 3, it is characterized in that: also comprise and rotate wind apparatus, the described wind apparatus that rotates comprises outer cover (15), air channel (17) and whirlwind road (16), described air channel (17) is placed in outer cover (15) inner bottom part, and this air channel (17) are provided with a minute air port; Described whirlwind road (16) Yu Fen air port UNICOM, this whirlwind road (16) outlet is placed in outer cover (15) top, makes to form whirlwind from whirlwind road (16) wind out; Describedly rotate the air outlet UNICOM that wind apparatus is set in the bocca outer wall of upper furnace and air channel (17) and secondary air channel (12).
5. Multifunctional biomass cooking stove according to claim 4, is characterized in that: described in rotate wind apparatus outer cover (15) be tightly connected with inboard wall of burner hearth.
6. Multifunctional biomass cooking stove according to claim 1, is characterized in that: gapped formation incubation cavity between described burner hearth (11) wall and waste heat recovery chamber (13) inwall.
7. Multifunctional biomass cooking stove according to claim 1, it is characterized in that: in described dust stratification chamber (8), be also provided with even wind net (9), this even wind net (9) is fixed on the air outlet of air blast discharge pipe and is provided with equally distributed wind hole, and the wind that air blast bloats is evenly entered in burner hearth by even wind net (9).
8. Multifunctional biomass cooking stove according to claim 1, is characterized in that: below, described waste heat recovery chamber (13) is provided with dust deposition chamber (6), and described warm-air pipe (10) end and return duct (5) are by dust deposition chamber (6) UNICOM.
9. Multifunctional biomass cooking stove according to claim 1, is characterized in that: also comprise water supply tank, this water supply tank is by autocontrol valve and waste heat recovery chamber (13) or the secondary chamber (4) of waste heat recovery UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213224.6U CN203810456U (en) | 2014-04-29 | 2014-04-29 | Multifunctional biomass stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213224.6U CN203810456U (en) | 2014-04-29 | 2014-04-29 | Multifunctional biomass stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810456U true CN203810456U (en) | 2014-09-03 |
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ID=51449199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213224.6U Expired - Fee Related CN203810456U (en) | 2014-04-29 | 2014-04-29 | Multifunctional biomass stove |
Country Status (1)
| Country | Link |
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| CN (1) | CN203810456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930549A (en) * | 2015-07-14 | 2015-09-23 | 贺曼 | Efficient energy-saving cooking range |
| CN107477556A (en) * | 2017-08-11 | 2017-12-15 | 重庆博帝节能设备有限公司 | A kind of environment-friendly boiler |
| CN109708151A (en) * | 2018-11-19 | 2019-05-03 | 许剑聪 | The biomass stove of uniform air intake reduction coking |
| CN110748870A (en) * | 2019-11-05 | 2020-02-04 | 贵州茅贡米业有限公司 | Environment-friendly boiler of high-efficient burning |
-
2014
- 2014-04-29 CN CN201420213224.6U patent/CN203810456U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930549A (en) * | 2015-07-14 | 2015-09-23 | 贺曼 | Efficient energy-saving cooking range |
| CN104930549B (en) * | 2015-07-14 | 2017-10-24 | 贺曼 | High efficiency energy saving stove |
| CN107477556A (en) * | 2017-08-11 | 2017-12-15 | 重庆博帝节能设备有限公司 | A kind of environment-friendly boiler |
| CN109708151A (en) * | 2018-11-19 | 2019-05-03 | 许剑聪 | The biomass stove of uniform air intake reduction coking |
| CN110748870A (en) * | 2019-11-05 | 2020-02-04 | 贵州茅贡米业有限公司 | Environment-friendly boiler of high-efficient burning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160429 |