KR20020045599A - Concave Half-discus Shaped Vertical Axis Wind Turbine Blade with Vent Groove - Google Patents

Concave Half-discus Shaped Vertical Axis Wind Turbine Blade with Vent Groove Download PDF

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Publication number
KR20020045599A
KR20020045599A KR1020020030140A KR20020030140A KR20020045599A KR 20020045599 A KR20020045599 A KR 20020045599A KR 1020020030140 A KR1020020030140 A KR 1020020030140A KR 20020030140 A KR20020030140 A KR 20020030140A KR 20020045599 A KR20020045599 A KR 20020045599A
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South Korea
Prior art keywords
wind
turbine blade
drag
rotational
wind turbine
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KR1020020030140A
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Korean (ko)
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손길홍
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손길홍
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Priority to KR1020020030140A priority Critical patent/KR20020045599A/en
Publication of KR20020045599A publication Critical patent/KR20020045599A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • 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

Abstract

PURPOSE: A concave half-disk shaped vertical shaft wind turbine blade is provided to obtain rotational force by using drag, and to improve rotational efficiency by minimizing the rotational resistance via a ventilation groove. CONSTITUTION: Concave half-disk shaped turbine blades(11,12) are combined to a rotating shaft(15) via a connecting bar. When the wind force is applied to the turbine blades, the ratio of the drag applied to the first turbine blade to the drag applied to the second turbine blade is the same as the ratio of the drag coefficients of the front faces of the turbine blades. Thus, rotational torque is generated, and the turbine blades rotate clockwise. When the face to which a wind is applied is vertical to the direction of the wind, the drag of the first turbine blade is maximized. When the face to which a wind is applied is parallel to the direction of the wind, the drag of another first turbine blade(13) is minimized. Therefore, rotational force is generated continuously. A ventilation groove on the turbine blade reduces the rotational resistance.

Description

통풍홈을 가진 속이 빈 반원반 형상 수직축 풍력회전날개{Concave Half-discus Shaped Vertical Axis Wind Turbine Blade with Vent Groove}Concave Half-discus Shaped Vertical Axis Wind Turbine Blade with Vent Groove}

본 발명은 바람의 항력을 이용한 수직축 풍력터빈의 회전토크를 회대화하여 풍력발전기에 이용할 수 있도록 고안한 수직축 풍력회전날개의 형상에 관한 것이다. 일반적으로 항력을 이용한 수직축 풍력회전 장치는 물체를 바람의 흐름 방향으로 떠밀어 보내려는 힘(항력)의 차이로 인해 발생하는 회전토크에 의해 회전하고, 사보니우스 회전자(Savonius Rotor), 반관형 회전날개, 컵형풍속계(Cup Anemometer), 기타 유사한 형상의 회전장치가 있는데 이러한 항력을 이용한 수직축 풍력터빈은 회전속도가 빨라지면 회전저항이 점점 커지므로 효율이 낮고 회전속도가 바람의 속도보다 빠를 수는 없고 변속기로 회전수를 높이는데도 한계가 있으므로 소형 풍력발전기에 일부 적용되고 있으나 풍력발전기로서의 상용화는 제대로 이루어지지 못하는 문제점이 있다.The present invention relates to a shape of a vertical axis wind turbine that is designed to be used in a wind turbine by rotating the rotation torque of the vertical axis wind turbine using the drag of the wind. In general, vertical wind turbines using drag force are rotated by rotational torque caused by the difference in force (force) to push an object in the direction of wind flow, and Savonius Rotor, semi-tubular There are rotating vanes, cup anemometers, and other similarly shaped rotating devices. The vertical wind turbines using these drags have lower rotational resistance as the rotational speed increases, so the efficiency is lower and the rotational speed can be faster than the wind speed. There is a limit to increase the number of revolutions in the transmission, so it is partly applied to small wind power generators, but there is a problem that commercialization as a wind power generator is not properly made.

본 발명이 이루고자 하는 기술적 과제는 회전효율이 낮아 발전기로서의 실용화가 제대로 이루어지지 못하고 있는 수직축 풍력발전기의 회전날개의 형상을 한쪽 면은 항력계수를 크게 하고 반대쪽 면은 항력계수를 최소화하여 회전축을 중심으로 서로 반대방향의 위치에 있을때 일정방향의 풍력에 대하여 항력의 차이가 최대한 크게하여 축을 중심으로 회전토크가 최대한 크게 되도록 풍력회전날개를 속이빈 반원반 형상으로 설계하고, 또한 회전시 공기저항을 가장 많이 받는 면에 공기가 일부 통과하도록 통풍홈을 만들어 와류현상과 순간 진공현상을 해소시켜 회전저항을 최소화하므로 회전토크를 최대한 높여주도록 하여, 수직축 풍력발전기에 실용적으로 이용할 수 있는 풍력 회전날개를 제시하는 것이다.The technical problem to be achieved by the present invention is low rotational efficiency of the rotor blade of the vertical axis wind power generator is not properly implemented as a generator, the one side to increase the drag coefficient and the other side to minimize the drag coefficient centered on the rotation axis The wind vane is designed in a hollow semi-circular shape so that the difference in drag against the wind in a given direction is as large as possible when the positions are opposite to each other so that the rotation torque is maximized about the axis. Ventilation grooves are made to allow some air to pass through the receiving surface to solve the vortex and instantaneous vacuum phenomenon to minimize the rotational resistance, thereby increasing the rotational torque as much as possible. .

도 1은 발명의 실시 예를 도시하는 사시도1 is a perspective view showing an embodiment of the invention

도 2는 회전자(Rotor)의 도면2 is a view of a rotor

도 3은 회전날개의 도면3 is a view of a rotary blade

도 4a는 회전날개(11)에서의 공기의 흐름도4a is a flow chart of air in the rotary blades 11

도 4b는 회전날개(12)에서의 공기의 흐름도4B is a flow chart of air in the rotor blades 12.

도 5는 회전날개의 회전시 저항 공기의 흐름도(순간진공현상 제거)Figure 5 is a flow chart of the resistance air during the rotation of the rotary blade (removal vacuum phenomenon)

< 주요부분의 부호에 대한 설명 ><Explanation of Signs of Main Parts>

11, 12, 13, 14 : 반원반 형상 풍력 회전날개11, 12, 13, 14: semi-circular wind turbine rotor

15 : 회전축15: axis of rotation

21 : 바람이 부는 방향21: wind blowing direction

22 : 시계방향22: clockwise

31 : 통풍홈31: ventilation groove

51 : 회전방향51: direction of rotation

D1 : 회전날개(11)가 받는 항력D1: Drag force received by the rotary blades 11

D2 : 회전날개(12)가 받는 항력D2: Drag force received by the rotary blades 12

C1 : 회전날개(11)의 항력계수 ( Open Side)C1: Drag Coefficient of Opening Blade (11)

C2 : 회전날개(12)의 항력계수 ( Close Side)C2: Drag Coefficient of Rotating Wing (12) (Close Side)

본 고안에 따르면, 회전날개(11)과 회전날개(12)는 통풍홈(31)을 가진 속이빈 반원반 형상으로 동일형상이며 회전축을 중심으로 서로 상사의 위치에 있으며 회전축(15)에 연결지지대로 결합되고, 한단 아래부분에 회전날개(11), (12)의 연결지지대와 직교하는 회전날개(13), (14)도 같은 방법으로 회전축(15)에 결합된다.According to the present invention, the rotary blades 11 and the rotary blades 12 have the same shape in the shape of a hollow semi-circle having the ventilation grooves 31 and are located at the positions of the superior to each other with respect to the rotary shaft and are connected to the rotary shaft 15. Is coupled to the rotary blades 11, 12 orthogonal to the connection support of the rotary blades 11, 12 at the lower end is also coupled to the rotary shaft 15 in the same way.

(도 2)에서 풍력이 일정방향(21)에서 회전날개에 작용할 때 회전날개(11)이 받는 항력(D1)과 회전날개(12)가 받는 항력(D2)의 비( D1/D2 )는 각 날개의 바람을 받는 면의 항력계수의 비( C1/C2 )와 같고 C1 ＞ C2 이므로 D1 ＞ D2가 되어 회전토크가 발생하여 회전날개는 시계방향(22)으로 회전하게 된다.In FIG. 2, when the wind acts on the rotary blade in a constant direction 21, the ratio D1 / D2 of the drag D1 received by the rotary blade 11 and the drag D2 received by the rotary blade 12 is each. It is equal to the ratio (C1 / C2) of the drag coefficient of the wind-winding surface, and C1> C2, so that D1> D2, rotational torque is generated and the rotor blade rotates clockwise (22).

예를 들어, 컵형 날개(속이 빈 반구 : Concave Half-sphere )의 경우 (C1)은 약 1.33이고 (C2)는 약 0.33수준이므로 양 날개의 항력비 D1/D2≒4인데 비해 본 고안의 속이빈 반원반 형상의 경우 (C1)은 약 1.33이고 (C2)는 약 0.2 수준이므로 양 날개의 항력비 D1/D2 ＞ 6이 되어 컵형 날개의 경우보다 1.5배 이상의 항력비 증가만큼 회전토크 증가 효과가 있을 것으로 추론할 수 있다.For example, in the case of a cup-shaped wing (concave half-sphere), (C1) is about 1.33 and (C2) is about 0.33, so the drag ratio of both wings is D1 / D2 ≒ 4. In the case of the semi-circular shape, (C1) is about 1.33 and (C2) is about 0.2, so the drag ratio D1 / D2> 6 of both wings will be increased by the drag ratio increase of 1.5 times or more than that of the cup type wing. Can be deduced.

회전날개의 바람을 받는 단면이 (도 2)와 같이 바람방향(21)과 수직으로 되면 회전날개(11)의 항력은 최대가 되고, 회전날개가 회전하여 풍향과 평행이 되어 항력이 최소가 되면 서로 직교하여 한단 아래부분에 있는 회전날개(13)의 항력이 최대가 되어 회전력이 계속 발생하므로 원활한 회전운동을 하게된다. 그리고 회전축을 따라 수직방향으로 여러층의 회전날개를 계속 연결하여 회전토크를 계속 증가시킬 수 있도록 하였다.When the cross section receiving the wind of the rotor blade is perpendicular to the wind direction 21 as shown in (Fig. 2), the drag of the rotor blade 11 becomes the maximum, and the rotor blade rotates in parallel with the wind direction, so that the drag becomes the minimum. Orthogonal to each other, the drag force of the rotary blade 13 at the lower end is maximized, so the rotational force continues to occur, thereby making a smooth rotational movement. In addition, it was possible to continuously increase the rotating torque by continuously connecting the rotor blades of several layers along the axis of rotation.

회전날개가 회전하게 되면 회전방향과 반대방향으로 회전체를 끌어당기는 저항력이 발생하는데 (도 3)과 같이 회전시 공기저항을 가장 많이 받는 면에 통풍홈(31)을 만들어 공기가 일부 흘러 들어가도록 하므로 회전저항을 대폭 줄이고, 또한 공기의 흐름이 원활히 되어 회전방향 반대쪽의 와류현상을 제거하여 회전력 저하를 막아주고, 또한 회전날개의 회전속도가 빨라지면 회전방향 반대쪽에 순간적인 진공현상이 생겨 회전력을 저하시키는 저항력이 발생하는데 통풍홈(31)으로 공기가 흘러 들어가므로 순간진공 현상을 해소시켜 회전저항을 최소화하므로 회전효율을 대폭 향상시켜, 수직축 풍력발전기의 고효율 회전장치로 이용할 수 있도록 구성하였다.When the rotary blade rotates, a resistance force that pulls the rotor in a direction opposite to the rotational direction is generated, as shown in FIG. Therefore, the rotational resistance is greatly reduced, and the air flows smoothly, eliminating the vortex phenomena on the opposite side of the rotational direction to prevent the reduction of the rotational force.In addition, when the rotational speed of the rotor blades increases, the instantaneous vacuum phenomenon occurs on the opposite side of the rotational direction to improve the rotational force As the resistance to deteriorate occurs, the air flows into the ventilation groove 31, thereby eliminating the instantaneous vacuum phenomenon, thereby minimizing the rotational resistance, thereby greatly improving the rotational efficiency, and is configured to be used as a high-efficiency rotating device for the vertical axis wind turbine.

본 발명에 의한 회전장치는 회전날개의 형상자체만으로도 켭형 풍력계의 컵형 날개형상보다 약 1.5배 이상 회전토크 증가 효과가 있고, 또한 통풍홈을 설치하므로 설치이전보다 회전저항을 절반 이하 수준으로 줄일 수 있을 것으로 추론 할 수 있으므로 회전토크 증가효과는 풍력발전기로서의 이용이 충분히 가능할 것이다.Rotating device according to the present invention has the effect of increasing the rotation torque about 1.5 times or more than the cup-shaped wing of the turn-type anemometer only by the shape of the rotary wing itself, and also install a ventilation groove can reduce the rotational resistance to half or less than before installation It can be inferred that the rotation torque increase effect can be sufficiently used as a wind power generator.

또한 본 발명특허신청자가 별도 신청한 실용신안( 출원번호 20-2002-0014612 )의 집풍·차풍장치를 부착하면 현재 주종을 이루는 수평축 풍력발전기 수준의 회전효율증가도 기대할 수 있을 것으로 사료된다.In addition, it can be expected that the efficiency of rotation of the horizontal axis wind power generators, which is the main axis, can be expected by attaching the wind-winding and wind-winding devices of the utility model (Application No. 20-2002-0014612), which the applicant of the present invention separately applies.

그리고 본 발명에 의한 회전장치는 항력을 이용한 수직축 풍력발전기의 회전장치이므로 기존의 프로펠러 방식의 수평축 풍력발전기의 회전장치와는 달리, 바람의 방향에 따라 회전날개의 방향을 바꾸어 주는 장치가 필요없고, 바람의 세기에 따라 회전날개의 피치각을 제어하는 장치 없이도 회전토크를 최대한 높일 수 있으며, 풍력회전날개의 형상이 간단하고 제작이 용이하여 전체 제작설치 비용이 낮아지고 최종적으로 발전단가를 낮출 수 있으므로, 수직축 풍력발전기의 상용화를 확대시킬 수 있을 것이다.And since the rotating device according to the present invention is a rotating device of the vertical axis wind power generator using the drag, unlike the conventional rotating device of the horizontal axis wind power generator of the propeller type, there is no need for a device for changing the direction of the rotary blade according to the direction of the wind, Rotational torque can be increased as much as possible without the device that controls the pitch angle of the rotor blades according to the wind strength.The wind turbine rotor's shape is simple and easy to manufacture, which lowers the overall manufacturing installation cost and finally lowers the power generation cost. As a result, the commercialization of vertical wind turbines could be expanded.

풍력발전기의 경제성이 높아지면 도서지방의 전력공급원, 해안지방의 발전단지조성 등 대체 에너지의 확대공급이 가능 할 것이며 무공해 에너지원으로 환경보호에 큰 도움을 줄 것이다.If the economic feasibility of wind power generators increases, it will be possible to expand and supply alternative energy such as the power supply source of islands and the development of coastal power generation complexes, and it will greatly help to protect the environment as a pollution-free energy source.

Claims (2)

수직축 풍력발전기의 회전장치로 이용할 수 있는 풍력회전날개의 형상으로, 한 면은 항력계수가 크고 반대면은 항력계수가 작은 (도 3)과 같은 속이빈 반원반 형상 수직축 풍력회전날개Wind turbine blade shape that can be used as a rotating device of the vertical axis wind power generator, one side is a hollow semi-circular shape vertical axis wind turbine blade, such as the drag coefficient is large and the drag coefficient is small (Fig. 3) 청구항 1의 풍력회전날개의 회전시 회전저항을 줄이고 가속시 와류현상과 순간진공현상을 제거하여 회전저항을 최소화하기 위해 만든 (도 3)의 (31)과 같은 통풍홈Ventilation grooves such as (31) of (31) made to reduce the rotational resistance during the rotation of the wind turbine blade of claim 1 and to minimize the rotational resistance by removing the vortex phenomenon and the instantaneous vacuum phenomenon during acceleration
KR1020020030140A 2002-05-30 2002-05-30 Concave Half-discus Shaped Vertical Axis Wind Turbine Blade with Vent Groove KR20020045599A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100754367B1 (en) * 2006-01-18 2007-08-31 남태우 rotor blade for a wind power generator
WO2012046909A1 (en) * 2010-10-04 2012-04-12 주식회사 삼정이앤더블유 Wind power generation device including a ring-shaped wing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0712045A (en) * 1993-06-28 1995-01-17 Michiaki Tsutsumi Vertical shaft windmill to be layered and mounted on multistory tower
JP2000009018A (en) * 1998-06-25 2000-01-11 Genichi Uesaki Omnidirectional windmill
WO2001006122A1 (en) * 1999-07-21 2001-01-25 Vortec Energy Limited Diffuser
KR20020005524A (en) * 2001-10-10 2002-01-17 손길홍 Half Tube Shaped Vertical Axis Wind Turbine Blade with Vent Groove

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0712045A (en) * 1993-06-28 1995-01-17 Michiaki Tsutsumi Vertical shaft windmill to be layered and mounted on multistory tower
JP2000009018A (en) * 1998-06-25 2000-01-11 Genichi Uesaki Omnidirectional windmill
WO2001006122A1 (en) * 1999-07-21 2001-01-25 Vortec Energy Limited Diffuser
KR20020005524A (en) * 2001-10-10 2002-01-17 손길홍 Half Tube Shaped Vertical Axis Wind Turbine Blade with Vent Groove

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100754367B1 (en) * 2006-01-18 2007-08-31 남태우 rotor blade for a wind power generator
WO2012046909A1 (en) * 2010-10-04 2012-04-12 주식회사 삼정이앤더블유 Wind power generation device including a ring-shaped wing

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