KR20100047131A - Dual rotor type windmill - Google Patents

Dual rotor type windmill Download PDF

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Publication number
KR20100047131A
KR20100047131A KR1020090099249A KR20090099249A KR20100047131A KR 20100047131 A KR20100047131 A KR 20100047131A KR 1020090099249 A KR1020090099249 A KR 1020090099249A KR 20090099249 A KR20090099249 A KR 20090099249A KR 20100047131 A KR20100047131 A KR 20100047131A
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KR
South Korea
Prior art keywords
rotor
frame
vertical axis
disposed
dual
Prior art date
Application number
KR1020090099249A
Other languages
Korean (ko)
Inventor
이승배
Original Assignee
주식회사 에어로네트
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 주식회사 에어로네트 filed Critical 주식회사 에어로네트
Priority to US12/607,094 priority Critical patent/US8376711B2/en
Publication of KR20100047131A publication Critical patent/KR20100047131A/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 
    • F03D3/002—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being horizontal
    • 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 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F03D3/0409—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels surrounding the rotor
    • 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
    • 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
    • F05B2240/10—Stators
    • F05B2240/12—Fluid guiding means, e.g. vanes
    • 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
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • F05B2240/2212—Rotors for wind turbines with horizontal axis perpendicular to wind direction
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • 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

The present invention relates to a dual rotor wind power generator, in particular, the rotor assembly is provided with two, the inlet guide vanes are disposed in the front lower portion of the rotor assembly, the rotor shaft of the rotor assembly is disposed behind the vertical axis so that the vertical axis is the rotor Arranged alternately with the rotor shaft of the assembly, the center of gravity of the device is located at the bottom to be able to balance stably so that the vertical axis can rotate smoothly with respect to the fixed shaft relates to a dual-wind generator.

Description

Dual rotor type windmill

The present invention relates to a dual rotor wind power generator, in particular, the rotor assembly is provided with two, the inlet guide vanes are disposed in the front lower portion of the rotor assembly, the rotor shaft of the rotor assembly is disposed behind the vertical axis so that the vertical axis is the rotor It relates to a dual rotor wind turbine which is staggered with the rotor shaft of the assembly.

Wind power generation systems are largely divided into horizontal and vertical axes, and there are various combinations of hybrid methods. The vertical shaft turbine is generally about half the efficiency of the horizontal shaft turbine, but the rotor rotation speed is relatively low, so the noise is low and the vibration is little. Therefore, the vertical shaft turbine can be installed in public facilities such as rooftops, schools, hospitals, etc. Long-term use and power generation are possible with blade manufacturing, so it has been used mainly for independent small wind power generation systems. However, in order to develop a vertical wind power generation system for distributed power generation, which is essential for the development of environment-friendly regions, it is necessary to make turbines more efficient, downsize, and use relatively few blades and parts to reduce weight and secure price competitiveness.

In general, vertical wind turbines for distributed generation suitable for residential areas due to low noise are classified into Savonius 'drag type and Darius' lift type. The drag type uses vanes and increases the number of vanes to increase turbine efficiency. The technology has been shifted, and the lift type has developed into a cross turbine.

However, in order to improve the low efficiency of Savonius turbines and to take advantage of generating torque at low revolutions, the jet wheel-type vertical axis wind turbines have installed inlet guide vanes at the inlet of Savonius-type turbines. In other words, it maximizes the part receiving the positive torque among the blades of the Savonius turbine and removes the negative torque by causing the vortex flow to occur in the area receiving the negative torque in the wake of the inlet guide vane.

That is, high speed dynamic pressure incident from the inlet guiding vanes (IGV) is prevented by converting the internal flow of the blade in the downstream direction of the inlet guide vane. In order to utilize the relative sound pressure generated by the torque generation, the inlet guide code length is as short as possible, the passage passage has the proper curvature, and the exit angle is the optimum distribution of rotor blade incidence angle from upstream to downstream at the given tip speed ratio. Have it.

In general, the savonius turbine is passed through the downstream blade after the torque generated by the drag on the upstream blade, as shown in Figure 1 (Korean Patent No. 885038), in the jet wheel type turbine 100, the inlet guide blade ( 120) and the side guide blades 130 provide high-speed incidence flow conditions for easy energy conversion, and open the upper and lower surfaces of the turbine 100 so that the introduced fluid moves to the blade surface of the blade 200 to increase the positive torque. And performance can be improved by designing to reduce negative torque.

     In addition, by applying a sweep angle distribution to each blade 200 of the turbine rotor and forming each blade 200 in a twisted shape, continuous rotational force is transmitted to the turbine 100 and radially axially. Recently, a blade structure of a turbine for a vertical axis wind power generation system to improve the performance of a vertical axis wind power generation system is smoothly disclosed.

     However, in the jet wheel turbine, the guide vane system combining the inlet guide vane 120 and the side guide vane 130 matches the direction of the wind so that the rotor upstream wind area and the rotor area are equal as much as possible. Steer through the tail wing so that Accordingly, the output performance of the small jet wheel turbine is steered so that the inlet guide vane 120 is matched with the wind direction by the tail blades up to the rated wind speed. In turn, the rotation speed of the turbine rotor is reduced, which reduces the output of the turbine rotor, thereby preventing the generator from being overloaded.

However, in general, the rotational force acting on the inlet guide vane is larger than the opposite rotational force acting on the side guide vane, so that the steer plate and the rudder of a very large area are required to steer the guide vane system in the same direction as the wind direction. In addition, when the rotational force acts on the hinge by the pressure difference between the pressure surface of the rudder and the negative pressure surface in the overwind speed, the guide blade system rotates clockwise due to the torque balance difference of the guide blade system, and eventually stops. Large wind loads act on the rudder. Therefore, there is a first problem that the guide vane system sags toward the tail wing due to an increase in weight due to an increase in the tail wing area due to the torque unbalance of the guide vane system and a second problem that requires excessive reinforcement due to the rudder wind load at the overwind speed.

The present invention has been made to solve the above-mentioned problems, dual performance rotor to improve the performance and at the same time the center of gravity of the device is located at the bottom can be stably balanced so that the vertical axis can rotate smoothly with respect to the fixed axis The purpose is to provide a wind turbine.

Dual rotor wind power generator of the present invention for achieving the above object, a pillar;

A vertical axis rotatably installed on the pillar, a main frame installed on the vertical axis, a rotor assembly horizontally disposed on both sides of the vertical axis, and rotatably installed on the main frame, and installed on the main frame; And a power generation unit including an inlet guide vane disposed at the front lower part of the assembly, an upper guide vane installed on the main frame, a tail wing connected to the main frame, and a generator connected to the rotor assembly.

The rotor assembly may include a rotor shaft disposed horizontally, a rotor frame radially and circumferentially installed on both sides of the rotor shaft, and installed on the rotor frame so as to approach an end of the rotor frame, and including a rotor blade.

The rotor shaft is disposed rearward from the vertical axis so that the vertical axis is staggered from the rotor shaft.

The power generating unit is provided with two, and the two power generating units are disposed in the vertical direction, the rotor blades are formed in an arc shape, the rotor blades are formed in an asymmetric arc shape, or the rotor blades are formed in an air foil shape. Can be.

According to the dual rotor wind power generator of the present invention as described above, there are the following effects.

The rotor assembly is provided with two, the inlet guide vanes are disposed in the front lower portion of the rotor assembly, the rotor shaft of the rotor assembly is disposed behind the vertical axis so that the vertical axis is staggered with the rotor shaft of the rotor assembly, so that the center of gravity of the device It is located at the bottom so that it can be stably balanced so that the vertical axis can rotate smoothly with respect to the fixed axis.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, among the configurations of the present invention to be described below, the same configuration as the prior art will be referred to the above-described prior art, and a detailed description thereof will be omitted.

Figure 2 is a perspective view of a dual rotor wind power generator according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view of the dual rotor wind power generator vertical axis and pillar coupling according to a preferred embodiment of the present invention, Figure 4 is a preferred embodiment of the present invention The dual rotor wind turbine according to the front view, Figure 5 is a dual rotor wind turbine side view according to a preferred embodiment of the present invention, Figure 6 is an enlarged perspective view of the dual rotor wind generator generator installation of Figure 2, Figure 7 is another aspect of the present invention Front view of a dual rotor wind power generator according to an embodiment.

As shown in FIG. 2 to FIG. 7, the dual rotor wind power generator according to the present embodiment includes a pillar 300, a vertical shaft 400 rotatably installed on the pillar 300, and a vertical shaft 400. A rotor assembly 600 disposed on both sides of the main frame 500 and horizontally on both sides of the vertical shaft 400 and rotatably installed on the main frame 500, and installed on the main frame 500. An inlet guide vane 800 disposed at the lower front of the assembly 600, an upper guide vane 700 installed on the main frame 500, a tail blade 900 connected to the main frame 500, and And a power generation unit including a generator 1000 connected to the rotor assembly 600, wherein the rotor assembly 600 is horizontally disposed on the rotor shaft 610 and on both sides of the rotor shaft 610. Rotor frame 620 and radially and circumferentially installed, and It is installed on the rotor frame 620 so as to approach the end of the rotor frame 620 and includes a rotor blade 630, the rotor shaft 610 is disposed behind the vertical axis 400, the vertical axis 400 Are alternately disposed with the rotor shaft 610.

As shown in FIG. 3, the pillar 300 is formed in a hollow cylindrical shape and is fixedly installed perpendicular to the ground.

The pillar 300 has a mounting groove formed on the upper and lower outer sides.

The vertical axis 400 has a larger inner diameter than the pillar 300 and is formed in a hollow cylindrical shape.

The vertical shaft 400 has flanges 403a and 403b formed at the top and the bottom thereof.

First and second mounting rings 404a and 404b are installed on the upper and lower flanges 403a and 403b, and second and second mounting rings 405a and 405b are installed on the first and second flanges 403a and 403b. The first and second mounting rings 404a and 404b and the second and second mounting rings 405a and 405b can easily install the bearings and sealing members S to be described below, and can be easily repaired in case of failure. There is this.

The first mounting ring 404a installed on the upper portion of the vertical shaft 400 has a flange portion 406 installed on the flange 403a of the vertical shaft 400 and a cylindrical portion formed in a cylindrical shape and inserted into the vertical shaft 400. 407 and a protrusion 408 formed to protrude inwardly at the lower end of the cylindrical portion 407.

The inner wall of the cylindrical portion 407 has a seating groove in which a bearing is seated.

The inner wall of the protrusion 408 is formed with an insertion groove into which the sealing member S is inserted.

The second mounting ring 405a installed on the upper portion of the vertical shaft 400 may include a cylindrical portion 409 and a cylindrical portion of the first mounting ring 404a installed on the flange 406 of the first mounting ring 404a. 407 includes an insertion unit 410 inserted into the inside.

A seating groove in which a bearing is seated is formed at an inner lower end of the insertion part 410, and an insertion groove into which the sealing member S is inserted is formed at the inner wall.

The first mounting ring 404b installed at the lower portion of the vertical shaft 400 has a cylindrical portion 411 formed in a cylindrical shape with a flange portion 406 installed at the flange 403b of the vertical shaft 400 and an upper inner wall of the cylindrical portion. It includes a protrusion 408 formed to protrude in.

The inner wall of the cylindrical portion 411 is formed with a seating groove for seating the bearing.

The inner wall of the protrusion 408 is formed with an insertion groove into which the sealing member S is inserted.

The second mounting ring 405b installed at the lower portion of the vertical shaft 400 may include a cylindrical portion 409 and a cylindrical portion of the first mounting ring 404b installed on the cylindrical portion 411 of the first mounting ring 404b. 407 includes an insertion portion 410 inserted into the inside, and a support portion 412 protruding from the upper portion of the insertion portion 410.

An insertion groove into which the sealing member S is inserted is formed on an inner wall of the insertion portion 410.

The vertical axis 400 is disposed to surround the pillar 300 and is rotatably installed on the pillar 300.

Between the vertical axis 400 and the pillar 300, a bearing is disposed in the mounting groove formed in the pillar 300, the first mounting rings (404a, 404b) and the second mounting ring (405a) and supported by the support portion (412) The vertical axis 400 is thus smoothly rotatable relative to the pillar (300).

The bearing includes a first bearing 301 and a second bearing 302.

The first bearing 301 includes an upper wheel and a lower wheel disposed below the upper wheel. Grooves are formed in the lower part of the upper wheel and the upper part of the lower wheel. A ball is disposed between the upper and lower wheels.

The second bearing 302 includes an inner ring and an outer ring disposed outside the inner ring. Grooves are formed outside the inner ring and inside the inner ring. A ball is disposed between the inner ring and the outer ring.

The first bearing 301 and the second bearing 302 are disposed between the vertical shaft 400 and the upper portion of the pillar 300, and the second bearing 302 is disposed between the vertical shaft 400 and the lower portion of the pillar 300. Is placed.

The first bearing 301 between the vertical axis 400 and the top of the pillar 300 is disposed above the second bearing 302.

The lower wheel of the first bearing 301 is supported by the inner ring of the second bearing 302.

The support ring 303 is disposed between the inner ring of the second bearing 302 and the first bearing 301 so that the two bearings do not interfere with each other, and the first bearing 301 is more stably supported.

In addition, an inlet hole 401 through which lubricating oil is introduced is formed at an outer wall of the pillar 300 or an inner wall of the vertical shaft 400. In this embodiment, the inlet hole 401 is formed in the vertical axis 400.

In addition, a space 402 may be formed between the pillar 300 and the vertical axis 400 to be filled with lubricating oil.

Lubricant in the space 402 facilitates the operation of the bearing.

Between the pillar 300 and the vertical shaft 400, a sealing member S is inserted into the insertion groove formed in the first mounting rings 404a and 404b and the second mounting rings 405a and 405b so as to be disposed above and below the bearing. It is inserted and installed.

As shown in FIG. 4, the main frame 500 is fixedly installed on an outer circumferential surface of the vertical axis 400.

The main frame 500 includes two square support frames 560 disposed on both sides and spaced apart from each other, and a connection frame 510 connecting the support frames 560 on both sides.

The support frame 560 includes a vertical frame 561 disposed on both sides, and a horizontal frame 562 connecting lower portions of the vertical frame 561.

As shown in FIG. 5, a first mounting frame 520 is installed at the front lower portion of the vertical frame 561. The first installation frame 520 includes a plurality of inclined frame, a connecting frame connecting the inclined frame and a reinforcement frame installed between the inclined frame and the inclined frame.

The second installation frame 540 is installed at the rear upper portion of the vertical frame 561.

The second installation frame 540 includes an inclination frame and a connection frame connecting the end of the inclination frame and the vertical frame 561.

In addition, a third installation frame 580 is installed at the rear of the vertical frame 561 so as to be disposed below the second installation frame 540.

The third installation frame 580 includes an inclination frame and a connection frame connecting the end of the inclination frame and the vertical frame 561.

The rotor assembly 600 is disposed horizontally on both sides of the vertical shaft 400 and is installed to be rotatable on the main frame 500.

As shown in FIG. 5, the rotor assembly 600 includes a rotor shaft 610 horizontally disposed in a horizontal direction and a rotor frame 620 installed radially and circumferentially on both sides of the rotor shaft 610. And a rotor blade 630 installed in the rotor frame 620 so as to be close to an end of the rotor frame 620 and formed in an arc shape.

Both sides of the rotor shaft 610 are installed on the third installation frame 580. A bearing B is installed between the rotor shaft 610 and the third installation frame 580, so that the rotor shaft 610 is rotatable with respect to the third installation frame 580.

The rotor shaft 610 is disposed behind the vertical axis 400 so as to cross the vertical axis 400.

The rotor frame 620 includes a first frame 621 that is radially installed, and a second frame 622 that is installed circumferentially and connects the first frame 621. In detail, the second frame 622 is installed at the portion where the rotor blade 630 is installed in the first frame 621.

Six first frames 621 are provided, and the second frame 622 forms a hexagon.

The number of first frames 621 may vary depending on the number of rotor blades 630.

The rotor blade 630 is formed in a semi-circular cross section, and when viewed as a whole, has a semi-cylindrical shape (cup shape).

Further, the rotor blade 630 is provided with a reinforcing frame in the middle so that the shape of the rotor blade 630 is maintained.

Preferably, the rotor blades 630 are provided with four or more than ten.

A performance experimental data graph according to the number of rotor blades 630 is shown in FIG. 7 (d / D = 0.25, U (wind speed) = 7 m / s)

In addition, Fig. 8 is a graph showing the performance test data of the wind turbine of the present invention according to the wind speed. (D / D = 0.25, Z (height of the wind turbine) = 6)

In addition, d / D (diameter of rotor blade cup / diameter of rotor) is 0.15 or more and 0.35 or less.

A graph of the peak Cp (power factor) experimental data according to d / D is shown in FIG. 9 (Z (height of wind power generator) = 6, U (wind speed) = 7 m / s)

The rotor blade 630 has a maximum turbine efficiency of 0.52, high operation control speed ratio of 0.5 to 0.75, wide control range, light weight, and H / D (rotor height to diameter) of 1.0 or more (efficiency effect) None) and easy to manufacture (Z = 6)

Both sides of the inlet guide vane 800 are installed on the first installation frame 520 of the main frame 500 so as to be disposed below the front of the rotor assembly 600.

The inlet guide vane 800 serves to guide the rotor assembly 600 by introducing external wind and accelerating the introduced wind.

The inlet guide vanes 800 are provided with three arc-shaped guide plates 810, and the three guide plates 810 are arranged to be spaced apart from each other.

In addition, both sides of the inlet guide vane 800 are blocked with a plate.

The upper guide vanes 700 are installed at both sides of the second installation frame 540 of the main frame 500 to be disposed above the rear of the rotor assembly 600.

The upper guide vane 700 serves to introduce wind, which escapes to the upper portion of the rotor assembly 600, into the rotor assembly 600.

The upper guide vane 700 is provided with one arc-shaped guide plate 710.

In addition, both sides of the upper guide vane 700 are blocked by a plate.

Tail wing 900 is installed on the top of the vertical frame 561 of the main frame 500, it is connected to the main frame 500.

The tail wing 900 is supported by a vertical support frame (not shown) installed in the second installation frame 540.

Tail wing 900 is installed on the vertical frame 561 by a connecting frame 910.

The tail wing 900 is disposed behind the rotor assembly 600.

As shown in FIG. 6, the generator 1000 is connected to the rotor assembly 600 to convert rotation energy of the rotor assembly 600 into electrical energy.

The generator 1000 may be disposed perpendicularly to the rotor shaft 610, and may be connected to the rotor assembly 600 by the gearbox 2000.

The gear box 2000 is provided with a bevel gear to transmit the rotational force of the rotor shaft 610 to the generator 1000.

A housing (not shown) surrounding the gearbox 2000 and the generator 1000 may be further provided. This housing protects the generator 1000 and the gearbox 2000.

Alternatively, as illustrated in FIG. 7, the generator 1000 may be directly connected to the rotor shaft 610 of the rotor assembly 600.

The generator 1000 is installed in the connection frame 510 and is disposed between the rotor assemblies 600 on both sides.

The operation of this embodiment having the above-described configuration will be described below.

When wind is introduced into the rotor assembly 600 through the inlet guide vane 800, the rotor assembly 600 is rotated, the rotational force of the rotor assembly 600 is transmitted to the gearbox 2000, the gearbox 2000 The transmitted rotational force of is transmitted to the generator 1000. The rotational force transmitted to the generator 1000 is converted into electricity.

On the other hand, the tail wing 900 is rotated according to the direction of the wind, and thus the power generation unit including the main frame 500 and the vertical axis 400 is rotated with respect to the pillar 300. Thus, the wind power generator of the present invention is to improve the power generation performance.

Unlike the above, as illustrated in FIG. 11, two power generation units may be provided, and two power generation units may be disposed in the vertical direction.

The two power generating units are connected to each other and the main frame 500 is disposed at the top and the bottom, respectively.

In addition, as shown in FIG. 12, the rotor blade 630 ′ of the rotor assembly may be formed in an asymmetric arc shape. That is, the rotor blade 630 ′ is formed in an arc shape so as to be asymmetric with respect to the horizontal center line. Therefore, one end of the rotor blade 630 'protrudes from the other end.

As shown in FIG. 13, the rotor blade 630 ″ of the rotor assembly may be formed in an airfoil shape.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

As described above, the dual rotor wind turbine according to the present invention is particularly suitable for a dual rotor wind turbine having an inlet guide vane and an upper guide vane.

1 is a perspective view of a conventional wind power generator.

Figure 2 is a perspective view of a dual rotor wind power generator according to a preferred embodiment of the present invention.

3 is a cross-sectional view of a dual rotor wind power generator vertical shaft and pillar coupling according to a preferred embodiment of the present invention.

Figure 4 is a front view of a dual rotor wind power generator according to a preferred embodiment of the present invention.

Figure 5 is a side view of a dual rotor wind power generator according to a preferred embodiment of the present invention.

Figure 6 is an enlarged perspective view of the dual rotor wind generator generator installation of Figure 2;

Figure 7 is a front view of a dual rotor wind power generator according to another embodiment of the present invention.

8 is a dual rotor wind power generator performance graph of the present invention according to the number of rotor blades.

9 is a dual rotor wind power generator performance graph of the present invention according to the wind speed.

10 is a graph of the highest Cp dual rotor wind power generator of the present invention according to d / D.

Figure 11 is a schematic cross-sectional view of a dual rotor wind power generator according to another embodiment of the present invention.

12 is a schematic side view of a rotor blade according to another embodiment of the present invention.

13 is a schematic side view of a rotor blade according to another embodiment of the present invention.

** Description of symbols for the main parts of the drawing **

300: pillar 400: vertical axis

500: main frame 600: rotor assembly

700: upper guide vane 800: inlet guide vane

900: tail wing 1000: generator

2000: gearbox

Claims (5)

Pillar; A vertical axis rotatably installed on the pillar, a main frame installed on the vertical axis, a rotor assembly horizontally disposed on both sides of the vertical axis, and rotatably installed on the main frame, and installed on the main frame; And a power generation unit including an inlet guide vane disposed at the front lower part of the assembly, an upper guide vane installed on the main frame, a tail wing connected to the main frame, and a generator connected to the rotor assembly. The rotor assembly includes a rotor shaft disposed horizontally, a rotor frame radially and circumferentially installed on both sides of the rotor shaft, and installed on the rotor frame so as to be close to an end of the rotor frame, and including a rotor blade. The rotor shaft is disposed behind the vertical axis, the vertical axis is a dual rotor wind turbine is arranged to be staggered with the rotor shaft. The method of claim 1, Two generators are provided, the two generators are dual rotor wind power generator disposed in the vertical direction. The method according to claim 1 or 2, The rotor blades are dual rotor wind power generator is formed in an arc shape. The method according to claim 1 or 2, The rotor blades are dual rotor wind power generator is formed in an asymmetric arc shape. The method according to claim 1 or 2, The rotor blades are dual rotor wind power generator is formed in the shape of an air foil.
KR1020090099249A 2008-10-28 2009-10-19 Dual rotor type windmill KR20100047131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/607,094 US8376711B2 (en) 2008-10-28 2009-10-28 Dual rotor wind turbine

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KR1020080105672 2008-10-28
KR20080105672 2008-10-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101292041B1 (en) * 2010-10-15 2013-08-05 김보겸 Horizontal wind power generator
KR101300197B1 (en) * 2010-07-20 2013-08-26 코아셈(주) Vertical shaft wind wheel
KR101346846B1 (en) * 2012-12-31 2014-01-03 이동거 Wind power generator
KR102266859B1 (en) * 2021-04-22 2021-06-18 박종웅 Axis Flow Windwheel Windmill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101300197B1 (en) * 2010-07-20 2013-08-26 코아셈(주) Vertical shaft wind wheel
KR101292041B1 (en) * 2010-10-15 2013-08-05 김보겸 Horizontal wind power generator
KR101346846B1 (en) * 2012-12-31 2014-01-03 이동거 Wind power generator
KR102266859B1 (en) * 2021-04-22 2021-06-18 박종웅 Axis Flow Windwheel Windmill

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