CN1318756C - Lift force, resistance combined vertical axis wind mill - Google Patents
Lift force, resistance combined vertical axis wind mill Download PDFInfo
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- CN1318756C CN1318756C CNB2004100675751A CN200410067575A CN1318756C CN 1318756 C CN1318756 C CN 1318756C CN B2004100675751 A CNB2004100675751 A CN B2004100675751A CN 200410067575 A CN200410067575 A CN 200410067575A CN 1318756 C CN1318756 C CN 1318756C
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- blade
- rotor
- flow
- airflow inlet
- guide device
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The present invention relates to a lift and resistance combined type vertical shaft wind power machine which is applied to the technical field of a wind power generating device. The present invention comprises a flow guiding device, a machine frame, a rotor fixing disk, a blade and a flow guiding plate, wherein the rotor fixing disk, the blade and the flow guiding plate are formed into a rotor; the blade is vertically arranged on the rotor fixing disk; the center of the flow guiding plate is coincident with a rotating shaft of the rotor, and the arrangement direction of the flow guiding plate is consistent with he direction of a chord line of the blade; the rotor and the flow guiding plate are fixed to the machine frame. When an included angle between the blade and a coming flow is small, the blade obtains the lift acted on the blade by airflow. When the included angle between the blade and the coming flow is big, the blade obtains the resistance acted on the blade by the airflow. Therefore, the blade which lies in a downwind position can sufficiently utilize the wind energy. For the blade which lies in an upwind position, the airflow acts on the blade in an opposite direction, the rotor can also be driven to rotate, and therefore, the efficiency of a wind wheel is improved.
Description
Technical field
The present invention relates to a kind of vertical axis windmill, specifically is a kind of lift, resistance combined vertical axis wind mill, is used for technical field of wind power generating equipment.
Technical background
Wind energy has a good application prospect and potentiality to be exploited as a kind of inexhaustible, nexhaustible novel energy.The wind energy resources of China is abundanter, greatly develops the requirement that the wind-powered electricity generation cause meets the sustainable development strategy of China's establishment.Wind energy conversion system is the main device of Wind Power Utilization.If existing wind driven generator principal horizontal axis high speed wind wheel.Its major defect is exactly to need higher startup wind speed, and need according to the variation of wind direction adjust wind wheel towards.Vertical axis windmill do not need to adjust wind wheel towards.
Find by prior art documents, mainly contain two types vertical axis windmill at present: lift-type wind energy conversion system and shaft resistance type windmill.David A Spear, PHD, " Wind TurbineTechnology Fundamental Conception Of Wind Turbine Engineering " " basic conception of wind energy conversion system technology-wind energy conversion system " of writing, New York ASME (The American Society ofMechanical Engineers) PRESS 1994 (New York American Society of Mechanical Engineers publishing house 1994), chapter 2 (49 in this book, 58,60 pages), chapter 3, (93,94 pages) mention: the lift-type wind energy conversion system, utilize air-flow that the lift of blade is driven the wind wheel rotation, need bigger startup wind speed.Shaft resistance type windmill utilizes air-flow that the resistance of blade is driven the wind wheel rotation, does not need very big startup wind speed, therefore also can use in the lower area of mean wind velocity.But blade can not get driving the power of wind wheel rotation basically when blade and wind speed direction angle are smaller.Lift, resistance combined vertical axis wind mill can make full use of lift and the resistance of incoming flow air to blade, therefore can improve the efficient of wind wheel greatly.In further retrieving, do not find bibliographical information as yet about lift, resistance combined vertical axis wind mill.
Summary of the invention
The objective of the invention is to improve the deficiency of existing vertical axis aerogenerator, a kind of lift, resistance combined vertical axis wind mill are provided, make it reduce the requirement of vertical axis windmill, improve the working efficiency of vertical axis windmill work wind speed.
The present invention is achieved by the following technical solutions, comprising: flow guide device, frame, rotor fixed disc, blade, guide plate.Rotor fixed disc, blade, guide plate are formed rotor, and blade is vertically set on the rotor fixed disc, and the center of guide plate overlaps with the rotating shaft of rotor, guide plate that direction is set is consistent with the string of a musical instrument direction of blade, rotor and flow guide device are fixed on the frame.
Each rotor comprises two blades, they are parallel, be vertically fixed on the rotor fixed disc, the sharf symmetry is positioned over the rotor shaft both sides, can increase the unit time air-flow like this and blade be done the time of positive work, blade adopts the intensity height, the material that density is little, and blades height is 3 ~ 4 times of its chord length, and the blade offset distance is much smaller than the chord length of blade, and in rotating shaft place the guide plate that is parallel to the blade string of a musical instrument is installed.To act on the air-flow of blade by flow guide device be running shaft place non-interference with the air-flow that does not directly act on blade by flow guide device in two blade rear ends in order to make, and reduces the working efficiency of wind wheel, with the placement of staggering of two blades, and installs guide plate additional.Can reduce phase mutual interference like this, increase the output power of wind wheel, improve the efficient of wind wheel by two blade air-flows.
When the blade rotation direction was opposite with wind speed, the active force that air-flow acts on the blade was the power that stops rotor rotation.Take place for fear of this situation, the present invention uses flow guide device, and flow guide device is the casing that an airflow inlet and two flow outlets are arranged, and the height of flow guide device is identical with blades height, and its width is slightly larger than the blade chord length.Make the air-flow that is in the contrary wind position can all enter flow guide device like this.The inner chamber of flow guide device is similar to the C type, its airflow inlet and flow outlet in the same way, be in like this air-flow of position against the wind can acting in opposition in blade.Airflow inlet is highly identical with blade height with being shaped as of flow outlet, the rectangle that width is different.And the width of airflow inlet is greater than the width of flow outlet.For the air flow stream that makes this part act on blade goes out wind wheel, near airflow inlet, add second flow outlet again.Second flow outlet is two cylindrical channels, and its diameter is roughly half of blade chord length.In order to make air-flow flow out wind wheel,, install baffle plate additional before the cylindrical passageway outlet in the flow guide device outside from cylindrical passageway.Baffle plate and airflow inlet are in same plane.
To such an extent as to the air-flow of position does not directly act on the moment that blade produces the obstruction rotor rotation in order to guarantee to be in against the wind, the airflow inlet of flow guide device should face local wind direction all the time.Consider the instantaneous variation of wind direction, therefore if the airflow inlet that guarantees flow guide device towards and local wind direction between angle between positive and negative 5 °.But because annual wind direction excursion is very big, rack-mounted flow guide device is designed to can be around the flow guide device of rotor shaft rotation.
When the angle of attack of incoming flow air and blade hour, rotor makes full use of air the lift of blade is driven rotor.When the angle of attack of incoming flow air and blade was big, rotor utilized air that the resistance of blade is driven rotor, can make blade when being in diverse location make full use of the energy of incoming flow air like this.Air, is adorned and is acted on blade in the other direction after flow guide device makes the air communication that is in the contrary wind position cross flow guide device for stoping the power of rotor rotation blade generation active force when blade is in the contrary wind position.Air-flow oppositely flows out flow guide device from flow outlet along casing after airflow inlet enters flow guide device, this part air-flow acts on the blade of position against the wind, discharges from second flow outlet of flow guide device then.Rotor is converted to mechanical energy with wind energy, the negative torque that the present invention may occur when coming the operation of balance wind wheel with two rotors that turn 90 degrees partially mutually.
Wind energy conversion system among the present invention, when the angle of blade and incoming flow hour, blade is subjected to the lift that air-flow acts on blade; When the angle of blade and incoming flow was big, blade was subjected to air-flow and acts on resistance on the blade.Blade when being in downwind position like this can utilize wind energy fully.Blade when being in position against the wind, air-flow acts on blade in the other direction, equally also can drive rotor rotation, has therefore improved the efficient of wind wheel greatly.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention.
Among Fig. 1,1-flow guide device, 2-frame, 3-rotor fixed disc, 4-blade, 5-guide plate.
Fig. 2 is the blade in the rotor and the relative position schematic representation of guide plate.
Fig. 3 is the flow guide device structural representation.
Among Fig. 3,7-airflow inlet, 8-flow outlet 2,9-flow outlet 1,10-baffle plate.
Fig. 4 is a flow guide device plan structure schematic representation.
Embodiment
As shown in Figure 1, the present invention includes: flow guide device 1, frame 2, rotor fixed disc 3, blade 4, guide plate 5, rotor fixed disc 3, blade 4, guide plate 5 are formed rotor, blade 4 is vertically set on the rotor fixed disc 3, the center of guide plate 5 overlaps with the rotating shaft of rotor, the installation direction of guide plate 5 is consistent with the string of a musical instrument direction of blade 4, and rotor and flow guide device 1 are fixed on the frame 2.
Each rotor comprises two blades, and they are parallel, be vertically fixed on the rotor fixed disc 3, and is symmetrical in rotor shaft.Blade 4 adopts the intensity height, the material that density is little, and it highly is 3 ~ 4 times of chord length, and two blades, 4 offset distances are much smaller than the chord length of blade 4.Rotating shaft place setting is parallel to the guide plate 5 of blade 4 strings of a musical instrument.
The embodiment of apparatus of the present invention below is provided:
In the present embodiment, blade chord length: 1=a, blade height: H=3 ~ 4a, guide plate is long: 1
d=0.5a, fixed disc diameter: D=2.2a, fixed disc is thick: 1 ,=0.1 ~ 0.2a.
In order not make two strands of incoming flows in the phase mutual interference of blade rear end, reduce the performance of wind wheel, two blades are offset a segment distance (slipping e=0.2a, vertical shift d=0.35a) mutually.And the use guide plate, as shown in Figure 2.
The negative torque situation that occurs when rotating in order to be equilibrated at, wind wheel uses two rotors of 90 ° of mutual deflections.
According to the difference of local mean wind velocity, the size of the chord length a value of blade also changes accordingly.Local wind speed is big more, and blade chord length a (m) value is also big more.If local mean wind velocity is v (m/s), the relation of chord length a and v is roughly as follows so: a=0.8 ~ 1.2v.
Flow guide device is another vitals among the design, and its structure as shown in Figure 3.Be in airflow inlet 7 backs that the air-flow of position against the wind enters in the flow guide device 1 and flow out from first flow outlet 9, this part air-flow flows out from second flow outlet 8 after acting on blade.
Wherein the height of flow guide device is identical with blade height, and airflow inlet 7 width are 4/5 of rotor radius.The width of first flow outlet 9 is 2/5 of a rotor radius.Angle β=15 between the normal of the airflow inlet 7 and first flow outlet 9 °～20 °.Flow guide device 1 interior smooth reduces air on-way resistance inside as far as possible.Second flow outlet 8 is two cylindrical tube, and diameter is 1/2 of a rotor radius.The distance of two pipeline center is 1/2 of flow guide device 1 height H.The distance of its centre distance flow guide device 1 bottom of pipeline that the position is low is 1/4 of H.Angle γ=45 between pipe centerline (i.e. second flow outlet 8 and airflow inlet 7) normal °～50
Claims (5)
1, a kind of lift, resistance combined vertical axis wind mill, comprise: frame (2), rotor fixed disc (3), blade (4), it is characterized in that, also comprise: flow guide device (1) and guide plate (5), rotor fixed disc (3), blade (4), guide plate (5) is formed rotor, rotate sub-rotating shaft of flow guide device (1) is rotated, blade (4) is vertically set on the rotor fixed disc (3), the center of guide plate (5) overlaps with the rotating shaft of rotor, and the installation direction of guide plate (5) is consistent with the string of a musical instrument direction of blade (4), and rotor and flow guide device (1) are fixed on the frame (2); Flow guide device (1) is the casing that is provided with airflow inlet (7) and first, second flow outlet (9,8), its height is highly identical with blade (4), width is slightly larger than blade (4) chord length, inner chamber is similar to the C type, airflow inlet (7) and first flow outlet (9) are in the same way, airflow inlet (7) is shaped as highly and the highly identical rectangle of blade (4) with first flow outlet (9), and the width of airflow inlet (7) is greater than the width of first flow outlet (9), second flow outlet (8) is two cylindrical channels, and its diameter is half of blade (4) chord length.
2, lift as claimed in claim 1, resistance combined vertical axis wind mill, it is characterized in that, each rotor comprises two blades (4), highly be 3～4 times of its chord length, two blades (4) are parallel, be vertically fixed on the rotor fixed disc (3), and are symmetricly set in rotor shaft, its offset distance is much smaller than the chord length of blade (4), in rotating shaft place the guide plate (5) be parallel to blade (4) string of a musical instrument is set, the placement of perhaps two blades (4) being staggered, and install guide plate (5) additional.
3, lift as claimed in claim 1, resistance combined vertical axis wind mill is characterized in that, perhaps in flow guide device (1) outside, and the preceding baffle plate (10) that is provided with of second flow outlet (8), baffle plate (10) is in same plane with airflow inlet (7).
4, lift as claimed in claim 1, resistance combined vertical axis wind mill is characterized in that, airflow inlet (7) towards and local wind direction between angle between positive and negative 5 °.
5, lift as claimed in claim 1, resistance combined vertical axis wind mill, it is characterized in that, angle β=15 between the normal of airflow inlet of flow guide device (7) and first flow outlet (9) °～20 °, angle γ=45 between the center line of described two cylindrical channels and airflow inlet (7) normal °～50 °, airflow inlet (7) width is 4/5 of a rotor radius, the width of first flow outlet (9) is that the diameter of 2/5, the second flow outlet (8) of rotor radius is 1/2 of a rotor radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100675751A CN1318756C (en) | 2004-10-28 | 2004-10-28 | Lift force, resistance combined vertical axis wind mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100675751A CN1318756C (en) | 2004-10-28 | 2004-10-28 | Lift force, resistance combined vertical axis wind mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603612A CN1603612A (en) | 2005-04-06 |
| CN1318756C true CN1318756C (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100675751A Expired - Fee Related CN1318756C (en) | 2004-10-28 | 2004-10-28 | Lift force, resistance combined vertical axis wind mill |
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| Country | Link |
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| CN (1) | CN1318756C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782313A (en) * | 2011-01-20 | 2012-11-14 | 巨诺国际有限公司 | Cyclonic wind power generator |
| TWI696753B (en) * | 2019-08-12 | 2020-06-21 | 國立臺灣師範大學 | Wind power generator |
| WO2023155102A1 (en) * | 2022-02-17 | 2023-08-24 | 黎金明 | Wind power generation apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092137A (en) * | 1992-08-18 | 1994-09-14 | 四风能源公司 | Wind turbine |
| US5463257A (en) * | 1993-11-23 | 1995-10-31 | Yea; Ton A. | Wind power machine |
| JP2000161196A (en) * | 1998-11-24 | 2000-06-13 | Masahiko Akaha | Cross-flow windmill and wind power station |
| CN2457361Y (en) * | 2001-01-09 | 2001-10-31 | 游勇 | High efficiency wind turbine |
| GB2378225A (en) * | 2001-05-24 | 2003-02-05 | Peter Rolin Heal | Vertical axis turbine in building |
| JP2003120500A (en) * | 2001-10-10 | 2003-04-23 | Maeda Seikan Kk | Wind mill with vertical axis having guide plate for small power |
| JP2004197643A (en) * | 2002-12-18 | 2004-07-15 | Ishikawajima Harima Heavy Ind Co Ltd | Vertical shaft type wind mill device |
-
2004
- 2004-10-28 CN CNB2004100675751A patent/CN1318756C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092137A (en) * | 1992-08-18 | 1994-09-14 | 四风能源公司 | Wind turbine |
| US5463257A (en) * | 1993-11-23 | 1995-10-31 | Yea; Ton A. | Wind power machine |
| JP2000161196A (en) * | 1998-11-24 | 2000-06-13 | Masahiko Akaha | Cross-flow windmill and wind power station |
| CN2457361Y (en) * | 2001-01-09 | 2001-10-31 | 游勇 | High efficiency wind turbine |
| GB2378225A (en) * | 2001-05-24 | 2003-02-05 | Peter Rolin Heal | Vertical axis turbine in building |
| JP2003120500A (en) * | 2001-10-10 | 2003-04-23 | Maeda Seikan Kk | Wind mill with vertical axis having guide plate for small power |
| JP2004197643A (en) * | 2002-12-18 | 2004-07-15 | Ishikawajima Harima Heavy Ind Co Ltd | Vertical shaft type wind mill device |
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| Publication number | Publication date |
|---|---|
| CN1603612A (en) | 2005-04-06 |
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Granted publication date: 20070530 Termination date: 20091130 |