CN206694183U - A kind of electric generator driven by weak wind - Google Patents

A kind of electric generator driven by weak wind Download PDF

Info

Publication number
CN206694183U
CN206694183U CN201720391414.0U CN201720391414U CN206694183U CN 206694183 U CN206694183 U CN 206694183U CN 201720391414 U CN201720391414 U CN 201720391414U CN 206694183 U CN206694183 U CN 206694183U
Authority
CN
China
Prior art keywords
wind
current stabilization
passage
collecting cover
diameter
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.)
Expired - Fee Related
Application number
CN201720391414.0U
Other languages
Chinese (zh)
Inventor
苏雯雪
黄育明
彭需艳
李钰信
李明扬
陈梦妮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Shanghai for Science and Technology
Original Assignee
University of Shanghai for Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Shanghai for Science and Technology filed Critical University of Shanghai for Science and Technology
Priority to CN201720391414.0U priority Critical patent/CN206694183U/en
Application granted granted Critical
Publication of CN206694183U publication Critical patent/CN206694183U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Wind Motors (AREA)

Abstract

The utility model provides a kind of electric generator driven by weak wind, including：Pylon, rotary shaft, air channel portion, Power Generation Section and wind direction adjustment portion.Air channel portion, with rotating axis connection, it is made up of wind-collecting cover, current stabilization passage and air exhaust passage, wind-collecting cover, into shrinkage type, is provided with prismatic current stabilization passage with air exhaust passage between wind-collecting cover minimum flow section and air exhaust passage maximum flow section；Power Generation Section, in current stabilization passage, including generator and the first order impeller, the second level impeller that are separately positioned at wind-collecting cover and air exhaust passage minimum flow section, both stage impellers are connected by first rotating shaft, the second rotating shaft with generator respectively；And wind direction adjustment portion, it is arranged in generator, rotary shaft is driven according to the testing result of wind direction test section, to adjust the direction in air channel portion.Electric generator driven by weak wind provided by the utility model, by the air channel and multiple generating equipments of both stage impellers, to improve the utilization rate and generating efficiency of low wind speed wind energy, reduce noise pollution.

Description

A kind of electric generator driven by weak wind
Technical field
Wind energy power technology field is the utility model is related to, more particularly to a kind of electric generator driven by weak wind.
Background technology
Wind energy is increasingly attached the importance in terms of wind energy utilization both at home and abroad as a kind of regenerative resource of cleaning.According to system Meter, not only reserves are huge for global wind energy, and the energy that can be utilized is also bigger than the water energy total amount that can be developed on the earth Ten times.For the wind energy development in China, the abundant high wind speed area of wind energy resources is concentrated mainly on, such as three northern areas of China (northeast, China North, northwest) and the ground such as southeastern coast.But such region area, which only accounts for national wind energy, can develop the 10% of area, and due to it In some areas it is underdeveloped, it is necessary to build powerful power network to realize that the wind-powered electricity generation of Large Copacity conveys, cost consumption is huge.It is real On border, according to geographical gentle as the analysis of data, the low wind speed wind energy aboundresources in China and distributed areas are extensive accounts for the whole nation The 68% of the gross area.And contribute in low wind speed section there are some researches show main flow Wind turbines and change substantially with wind speed, i.e., power is bent The slope of line is larger.Therefore, developing such low wind speed wind energy resources turns into one of important directions of current China's Wind Power Development, and The important supplement strength of the year two thousand twenty target for energy-saving and emission-reduction and renewable resource developing goal is realized as China.
Widely used wind power generation plant is typically made up of wind wheel, generator and pylon now.But in order to obtain more More wind energies, the blade of traditional wind need the more to do the more big the requirement utilized that could meet to low velocity wind energy, but this Financial cost caused by the requirement meeting of sample increases.In addition, wind energy utilization is low and wind energy plant caused by noise also contribute to it is low The utilization of fast region wind energy.
Utility model content
The present invention is, and it is an object of the present invention to provide a kind of electric generator driven by weak wind in order to solving the above problems and carry out.
The invention provides a kind of electric generator driven by weak wind, for the wind energy of low wind speed air to be changed into electric energy, It is characterised in that it includes：Pylon, fix on the ground；Rotary shaft, it can be rotatably set in the one end of pylon away from ground；Wind Road portion, is fixedly connected with rotary shaft, including the current stabilization passage with rotating axis connection, the wind-collecting cover that is connected with current stabilization passage end with And the air exhaust passage being connected with the current stabilization passage other end；Power Generation Section, the upper end of rotary shaft is arranged on, including set on the rotary shaft And there is the generator being connected with first rotating shaft and the second rotating shaft, be arranged at wind-collecting cover minimum flow section and first rotating shaft company Connect and diameter is slightly less than the first order impeller of wind-collecting cover minimum flow section diameter and is arranged on air exhaust passage minimum excessively stream and breaks It is connected at face with the second rotating shaft and diameter is less than the second level impeller of air exhaust passage minimum flow section diameter；And wind direction adjustment Portion, it is arranged in generator, rotary shaft is driven according to the testing result of wind direction test section, further adjustment and rotation axis connection The direction in air channel portion.
In a kind of electric generator driven by weak wind that utility model provides, it can also have the feature that：Wherein, collect Diameter of the fan housing away from current stabilization passage end is more than the diameter with wind-collecting cover close to the current stabilization passage other end.
In a kind of electric generator driven by weak wind that utility model provides, it can also have the feature that：Wherein, arrange Diameter of the wind passage away from current stabilization passage end is less than the diameter with air exhaust passage close to the current stabilization passage other end.
In a kind of electric generator driven by weak wind that utility model provides, it can also have the feature that：Wherein, surely The shell top half of circulation road is provided with solar energy coating.
In a kind of electric generator driven by weak wind that utility model provides, it can also have the feature that：Wherein, wind Include being arranged on 4 tachymeters of the wind-collecting cover away from current stabilization passage end to test section, when the velocity deviation that tachymeter is measured surpasses During the scope that deviates, deviation signal is fed back to wind direction regulation and control portion and is adjusted by tachymeter；When the velocity deviation that tachymeter is measured When in deviation range, feedback terminates, and adjustment process terminates.
The effect of utility model and effect
According to electric generator driven by weak wind provided by the utility model, as a result of air channel portion so that wind energy is just In collection, air channel portion includes wind-collecting cover, current stabilization passage and air exhaust passage；As a result of wind-collecting cover, flow section gradually subtracts It is small so that wind speed improve so that driving impeller rotation rotating speed increase, realize the lifting of generating efficiency；As a result of mistake Flow section is gradually reduced air exhaust passage, wind is raised speed again in air exhaust passage, and driving next stage impeller is rotated into sector-style power hair Electricity, further increase generating efficiency；Due to impeller is placed in the portion of air channel, improves blade vibration or other reasonses bring Noise pollution problem；As a result of wind direction test section and wind direction adjustment portion so that air channel portion always face incoming wind direction so that Wind energy utilization improves.To sum up, it is improved, makes an uproar as a result of low wind velocity power generation device, wind energy utilization and generating efficiency Sound pollution is also reduced, and it is simple in construction be easy to safeguard, can be applied to the low wind speed wind energy Resources Area such as city rural area.
Brief description of the drawings
Fig. 1 is the structural representation of the electric generator driven by weak wind provided in embodiment of the present utility model；
Fig. 2 is the structural representation of the electric generator driven by weak wind provided in embodiment of the present utility model；
Fig. 3 is the structural representation in the air channel portion of the electric generator driven by weak wind provided in embodiment of the present utility model Figure；And
Fig. 4 is the control flow schematic diagram of the wind direction adjustment portion provided in embodiment of the present utility model.
Embodiment
In order that the technological means reached purpose that the utility model is realized is easy to understand with effect, following examples knot Accompanying drawing is closed to be specifically addressed a kind of electric generator driven by weak wind of the utility model.
<Embodiment>
Fig. 1 is the structural representation of the electric generator driven by weak wind provided in embodiment of the present utility model；Fig. 2 is this The structural representation of the electric generator driven by weak wind provided in the embodiment of utility model；Fig. 3 is implementation of the present utility model The structural representation in the air channel portion of the electric generator driven by weak wind provided in example.
As shown in Figure 1, Figure 2 and Figure 3, electric generator driven by weak wind 100 include pylon 10, rotary shaft 20, air channel portion 30, Power Generation Section 40, wind direction test section 50 and wind direction adjustment portion 60.
Pylon 10 fixes on the ground.
Rotary shaft 20 can be rotatably set in the one end of pylon 10 away from ground.
As shown in Figures 2 and 3, air channel portion 30 is connected with rotary shaft 20, including current stabilization passage 31, wind-collecting cover 32 and air draft are led to Road 33.
Current stabilization passage 31 is connected with rotary shaft 20, for steady air flow so that the flowing that air-flow is uniform and speed is consistent.
As shown in figure 3, the shell top half of current stabilization passage 31 is provided with solar energy coating 311, for photovoltaic generation.
Wind-collecting cover 32 is connected with one end of current stabilization passage 31, for collecting wind, and improves wind speed.
Air exhaust passage 33 is connected with the other end of current stabilization passage 31, for further improving wind speed.
As shown in Figures 2 and 3, Power Generation Section 40 is arranged on the upper end of rotary shaft 20, including generator 41, first rotating shaft 42, Second rotating shaft 43, first order impeller 44 and second level impeller 45.
Generator 41 is arranged on the upper end of rotary shaft 20.
The rotating shaft 43 of first rotating shaft 42 and second is arranged on the both sides of generator 41.
First order impeller 44 is arranged in wind-collecting cover 32 and is connected with first rotating shaft 42, and the diameter of first order impeller 44 is smaller Diameter in wind-collecting cover 32 close to current stabilization passage end.
Second level impeller 45 is arranged in air exhaust passage 33 and is connected with the second rotating shaft 43, and the diameter of second level impeller 45 omits Less than diameter of the air exhaust passage 33 away from current stabilization passage end.
As shown in figure 3, wind direction test section 50 is arranged on wind-collecting cover 32 away from the one end of current stabilization passage 31, for detecting low wind speed The wind direction of air.
As shown in figure 3, wind direction adjustment portion 60 is located in generator 43, is driven and revolved according to the testing result of wind direction test section 50 Rotating shaft 20, further adjust the direction in the air channel portion 30 being connected with rotary shaft 20.
Fig. 4 is the control flow schematic diagram of the wind direction adjustment portion provided in embodiments of the invention.
Wind direction test section 50 includes being arranged on 4 tachymeters 51 of the wind-collecting cover 32 away from the one end of current stabilization passage 31.
When the velocity deviation that tachymeter 51 is measured exceeds deviation range, deviation signal is fed back to wind direction and adjusted by tachymeter 51 Control portion 60 is adjusted；When the velocity deviation that tachymeter 51 is measured is located in deviation range, feedback terminates, and adjusts process knot Beam.
The course of work of the electric generator driven by weak wind of the present embodiment：
Air inducing part is completed by wind-collecting cover 32, and wind-collecting cover 32 is a kind of tapered channels, its area of section of streamwise by It is decrescence small.The wind group of certain wind speed is reached at first order impeller 44, promotes first order impeller 44 to rotate acting, the first rotary shaft 42 Generator 41 is connected to by impeller pivot generation mechanical kinetic energy driven to be generated electricity.Due to wind-collecting cover 32 speedup and Guide effect, wind group is uniformly and direction is fixed, so the blade of first order impeller 44 may be designed as optimal forced position, it is not necessary to adopt With the adaptive wind direction of oar technology is become, be advantageous to the maximum kinetic energy using wind-force.At current stabilization passage 31, first order impeller 44 is finished The air-flow with leaving velocity of work(and the air-flow revealed from impeller with vias inner walls gap converge, due to speed be not required to carry out it is steady Stream.The lingering remnants of past customs uniform through the air-flow after the current stabilization of current stabilization passage 31 and that speed is basically identical, into air exhaust passage 33, air exhaust passage 33 designed to wind-collecting cover 32 it is similar.The lingering remnants of past customs is further raised speed, and complementary energy is improved, finally in the exit of air exhaust passage 33 with uniform Flow velocity blows to second level impeller 45.Second level impeller 45 is driven by the lingering remnants of past customs, and rotation acting passes to the second rotary shaft 43, Jin Erchuan Pass generator 41.The part of solar energy coating 311 of the shell of current stabilization passage 31 carries out photovoltaic generation simultaneously.The design in air channel portion, Wind-force is set uniformly to be applied to the optimal stress point of first order impeller 44 and the blade of second level impeller 45, which not only improves impeller pair The utilization rate of wind energy also extends the life-span of blade, increases economic efficiency.
Regulation and control portion 60 is located inside motor 43, carries out the task of wind direction adjustment, and its regulation process reference picture 4 is mainly： The porch of wind-collecting cover 32 such as is provided with 4 tachymeters 51 of arc length distribution, and tachymeter is once tested the speed for 51 every 10 minutes, works as gas Stream direction is not face entrance, and the speed of 4 tachymeters 51 will appear from the relatively large deviation beyond deviation range.Tachymeter is by deviation Signal feeds back to regulation and control portion 60, and regulation and control portion 60 then starts to be rotated with the rotary shaft 20 of the coaxial line of pylon 10.In adjustment process In, the tachometer signal high frequency feedback of tachymeter 51 is to adjustment portion 60, and until velocity deviation is positioned at setting in deviation range, feedback is tied Beam, adjustment process terminate.
The annual mean wind speed in general low wind speed region be 5.5~6.5m/s, mid latitudes year light application time be a 1200h left sides It is right.Here, it is 6m/s that we, which fetch stream mean wind speed,.In the case of considering flow losses 10%, arrives stream wind speed is through wind-collecting cover 32 Can averagely 1.5 times of speed-raising.According to wind energy concentration calculation formula：E=ρ V3/ 2, when to draw wind speed be 6m/s, wind energy concentration is 132w/m2, when wind speed rises to 9m/s, wind energy concentration has reached 447w/m2.According to blade diameter engineering calculation work formula：P=ρ V3 πD2Cp η/8 (wherein P-wind energy conversion system power output, V-rated wind speed, D-blade diameter, Cp-wind wheel power coefficient, η-hair Electrically and mechanically transmission efficiency is relevant with motor performance), it can be deduced that：When rated wind speed increases by 1.5 times, the increasing of wind wheel power coefficient Add, blade diameter will reduce 2.5 times or so.Along with lingering remnants of past customs surplus energy utility so that wind energy utilization is up to more than 90%.To sum up, The wind energy utilization of two-stage, will be so that generating efficiency greatly improves along with adding solar energy coating 311 to carry out photovoltaic generation, this implementation For electric generator driven by weak wind 100 compared with the traditional wind of identical generating capacity, overall dimensions will reduce 2.5 in example It is~2.8 times, compact-sized and cost-effective considerable.
The effect of embodiment and effect
Electric generator driven by weak wind according to involved by the present embodiment, as a result of air channel portion so that wind energy is just In collection, air channel portion includes wind-collecting cover, current stabilization passage and air exhaust passage；By employing wind-collecting cover so that wind speed improves, so that The rotating speed increase that impeller rotates must be driven, realizes the lifting of generating efficiency；As a result of air exhaust passage, make wind in air exhaust passage Inside raise speed again, drive next impeller to be rotated into row wind-power electricity generation, further increase generating efficiency；Due to impeller is placed in into wind In road portion, blade vibration is improved or noise pollution problem that other reasonses are brought；As a result of wind direction test section and wind direction Adjustment portion so that wind energy utilization improves.
Above-mentioned embodiment is preferred case of the present utility model, is not intended to limit the scope of protection of the utility model.
As in the present embodiment, diameter of the wind-collecting cover away from current stabilization passage end is more than another close to current stabilization passage with wind-collecting cover The diameter of one end.
As in the present embodiment, diameter of the air exhaust passage away from current stabilization passage end is less than and led to air exhaust passage close to current stabilization The diameter of the road other end.
As in the present embodiment, the shell top half of current stabilization passage is provided with solar energy coating, for photovoltaic generation.
In addition, in the present embodiment, 4 tachymeters are arranged on wind-collecting cover away from current stabilization passage end, are adjusted for wind direction, Improve wind energy utilization.
To sum up, it is improved as a result of low wind velocity power generation device, wind energy utilization and generating efficiency, noise pollution Be reduced, and it is simple in construction be easy to safeguard, can be applied to the low wind speed wind energy Resources Area such as city rural area.In addition, this implementation Low wind velocity power generation device can be additionally used in rural area field in example, and improvement abandons wind and abandons optical phenomenon, and using device generate electricity provides machinery The electricity consumption of farm implements etc..

Claims (5)

  1. A kind of 1. electric generator driven by weak wind, for the wind energy of low wind speed air to be changed into electric energy, it is characterised in that bag Include：
    Pylon, fix on the ground；
    Rotary shaft, the one end of the pylon away from the ground is can be rotatably set in, with pylon coaxial line；
    Air channel portion, be fixedly connected with the rotary shaft, including with it is described rotation axis connection current stabilization passage, with the current stabilization passage The wind-collecting cover of one end connection and the air exhaust passage being connected with the current stabilization passage other end；
    Power Generation Section, is arranged on the upper end of the rotary shaft, including be arranged in the rotary shaft and with first rotating shaft and the The connected generator of two rotating shafts, it is arranged on the wind-collecting cover and is connected close to one end of the current stabilization passage cylinder with the first rotating shaft And diameter is less than the wind-collecting cover close to the first impeller of current stabilization passage cylinder one end diameter and is arranged on the air exhaust passage cylinder It is interior to be connected with second rotating shaft and diameter is less than second impeller of the air exhaust passage cylinder away from current stabilization passage cylinder one end diameter；
    Wind direction test section, for detecting the wind direction of the low wind speed air；And
    Wind direction adjustment portion, it is arranged in the generator, the rotary shaft is driven according to the testing result of the wind direction test section, Further adjustment and the direction in the air channel portion of the rotation axis connection.
  2. A kind of 2. electric generator driven by weak wind according to claim 1, it is characterised in that：
    Wherein, diameter of the wind-collecting cover away from the current stabilization passage end is more than with the wind-collecting cover close to the current stabilization passage The diameter of the other end.
  3. A kind of 3. electric generator driven by weak wind according to claim 1, it is characterised in that：
    Wherein, diameter of the air exhaust passage away from the current stabilization passage end is less than with the air exhaust passage close to the current stabilization The diameter of the passage other end.
  4. A kind of 4. electric generator driven by weak wind according to claim 1, it is characterised in that：
    Wherein, the shell top half of the current stabilization passage is provided with solar energy coating.
  5. A kind of 5. electric generator driven by weak wind according to claim 1, it is characterised in that：
    Wherein, the wind direction test section includes being arranged on 4 tachymeters of the wind-collecting cover away from the current stabilization passage end,
    When the velocity deviation that the tachymeter is measured exceeds deviation range, deviation signal is fed back to the wind by the tachymeter It is adjusted to adjustment portion；When the velocity deviation that the tachymeter is measured is located in deviation range, feedback terminates, and adjusts process Terminate.
CN201720391414.0U 2017-04-14 2017-04-14 A kind of electric generator driven by weak wind Expired - Fee Related CN206694183U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720391414.0U CN206694183U (en) 2017-04-14 2017-04-14 A kind of electric generator driven by weak wind

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720391414.0U CN206694183U (en) 2017-04-14 2017-04-14 A kind of electric generator driven by weak wind

Publications (1)

Publication Number Publication Date
CN206694183U true CN206694183U (en) 2017-12-01

Family

ID=60444427

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720391414.0U Expired - Fee Related CN206694183U (en) 2017-04-14 2017-04-14 A kind of electric generator driven by weak wind

Country Status (1)

Country Link
CN (1) CN206694183U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799203A (en) * 2018-06-13 2018-11-13 南京航空航天大学 Without back-pressure flush type density current wind-engaging element
CN111396126A (en) * 2020-03-30 2020-07-10 中铁二院工程集团有限责任公司 Tunnel pucking prevention and control system
CN112031990A (en) * 2020-08-27 2020-12-04 李电豹 Wind turbine generator
CN114508387A (en) * 2021-12-16 2022-05-17 严强 Compressed gas pipeline power generation device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799203A (en) * 2018-06-13 2018-11-13 南京航空航天大学 Without back-pressure flush type density current wind-engaging element
CN108799203B (en) * 2018-06-13 2024-03-19 南京航空航天大学 Non-back pressure embedded heavy-current wind-receiving element
CN111396126A (en) * 2020-03-30 2020-07-10 中铁二院工程集团有限责任公司 Tunnel pucking prevention and control system
CN112031990A (en) * 2020-08-27 2020-12-04 李电豹 Wind turbine generator
CN112031990B (en) * 2020-08-27 2021-12-17 江苏万基传动科技有限公司 Wind turbine generator
CN114508387A (en) * 2021-12-16 2022-05-17 严强 Compressed gas pipeline power generation device

Similar Documents

Publication Publication Date Title
Li et al. Experimental investigation of solidity and other characteristics on dual vertical axis wind turbines in an urban environment
CN206694183U (en) A kind of electric generator driven by weak wind
Chong et al. Vertical axis wind turbine with omni-directional-guide-vane for urban high-rise buildings
US20110103942A1 (en) Wind energy system
WO2005072184A2 (en) Methods and devices for utilizing flowing power
US20170201157A1 (en) Device for converting kinetic energy of a flowing medium to electrical energy
CN109707560A (en) A kind of wind-solar generation device based on Venturi effect
Rus et al. Experimental tests in equipping vertical axis wind turbines with electric Generator
Roy et al. Design of an offshore three-bladed vertical axis wind turbine for wind tunnel experiments
Tong et al. Innovative Power‐Augmentation‐Guide‐Vane Design of Wind‐Solar Hybrid Renewable Energy Harvester for Urban High Rise Application
Nishioka et al. Study, Design and test of a LENZ-type wind turbine
CN103629050A (en) Cross-flow and rotational flow wind driven generator
WO2015131789A1 (en) Cone wind-wheel wind-driven generator
Lyons et al. Wind Turbine Technology–The Path to 20% US Electrical Energy
CN203796501U (en) Wind power generation wind source enhancer
CN107061141A (en) A kind of wind-driven generator provided with siphon air channel
Talukdar et al. Aerodynamic performance characterization of a drag-based elliptical-bladed Savonius wind turbine rotor
CN206942924U (en) A kind of wind-driven generator provided with siphon air channel
Zitouni et al. Optimization of darrieus-type straight-bladed vertical axis wind turbines
CN206397650U (en) New leafy more piece fan blade and its wind-driven generator
Chong et al. Design and wind tunnel testing of a Savonius wind turbine integrated with the omni-direction-guide-vane
CN110296050A (en) A kind of wind power generation plant
CN214577512U (en) Windward fan
Shah et al. Hydrodynamic Design and Optimization of Vertical Axis Water Turbine for Shallow and High Velocity Water Streams of Pakistan
Ibrahim et al. Performance investigation of building integrated Hybrid vertical axis wind turbine for small scale power generation

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171201

Termination date: 20180414