Vertical Axis Wind Turbine

Abstract

To provide a vertical shaft wind power generator that minimizes reverse rotation wind pressure occurring when rotary blades rotates against wind, and has a stable structure capable of sufficiently withstanding strong wind even when wind power generators are installed in multiple stages.SOLUTION: A vertical shaft wind power generator comprises at least two conical frames formed in laminar manner with a hollow interior, and a rotary blade rotational shaft 110 that is installed vertically between the conical frames and rotates, where rotary blades 120 formed separately into stationary blades 120a and variable blades 120b, 120c, and 120d, are connected to the rotary blade rotational shaft 110, to maximize the favorable wind force of the rotary blades 120 and minimize the adverse wind force, thereby enabling highly efficient power generation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wind turbine generator, and more particularly to a vertical axis wind turbine generator which generates power by having a vertical axis of rotation on which rotor blades are attached and rotated. [Background technology]

[0002] Most large-scale wind turbines are horizontal-axis wind turbines, which have a horizontal shaft with large blades attached to one side of the shaft. Horizontal-axis wind turbines have good power generation efficiency because the blades are attached to one side of the horizontal shaft and rotate when exposed to the wind, but the rotors are long, have a large rotation radius, and are noisy because the long rotors rotate, making them unsuitable for installation in nearby living spaces.

[0003] In contrast, vertical axis wind turbines are relatively small and can be installed on the roof of a building.

[0004] In addition, while a horizontal axis wind turbine can only have one generator attached to a single horizontal axis, a vertical axis wind turbine can be installed in multiple stages, allowing multiple generators to be attached simultaneously, thereby producing a relatively large amount of electricity.

[0005] However, vertical axis wind power generators have a problem in that the rotors attached to the vertical axis are subjected to reverse rotational wind pressure from the wind as they rotate around the rotation axis, which reduces the rotational force. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Korean Patent Registration No. 10-2448925 [Patent Document 2] Korean Patent Registration No. 10-1498785 [Patent Document 3] Korean Patent Registration No. 10-1483461 [Patent Document 4] Korean Patent Registration No. 10-1554307 [Patent Document 5] Korean Patent Registration No. 10-1325752 [Patent Document 6] Korean Patent Registration No. 10-1722659 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to solve the above-mentioned problems by minimizing the counter-rotation wind pressure generated when the rotor blades rotate against the wind, and to provide a structurally stable vertical axis wind turbine that can withstand strong winds even when wind turbines are installed in multiple stages. [Means for solving the problem]

[0008] In order to minimize the counter-rotation wind pressure that the rotors attached to the wind power generator of the present invention are inevitably subjected to while rotating, the rotor 120 is divided into fixed rotor 120a, which has an air outlet 120e, and variable rotors 120b, 120c, and 120d, with the variable rotors 120 being at the center. In fair winds, the variable rotors close the air outlet 120e of the fixed rotor 120a, and in headwinds, the variable rotors open the air outlet of the fixed rotor 120a, minimizing the headwind wind pressure.

[0009] When the wind power generator is formed in multiple stages, the conical frame 130 formed in space is formed in layers so that the power generating device M and the acceleration gear 150 can be built in between each stage, and at least three or more supports 140 are fixed to the outer periphery of the conical frame 130 and extend vertically to the ground to ensure that it can withstand strong winds. [Effects of the Invention]

[0010] In the vertical axis wind power generator according to the present invention, the rotor 120 is divided into a fixed blade 120a and a variable blade, and the variable blade that moves according to wind pressure is connected to the inside of the fixed blade 120a. By opening and closing the air outlet 120e formed in the center, the wind pressure on the blade is maximized in fair winds and minimized in headwinds, thereby strengthening the rotational force of the rotor 120.

[0011] Furthermore, when a vertical axis wind turbine is configured as a small single stage, it can be installed in a small space, so it can be installed on rural houses, on the roofs of buildings, or on top of streetlights to generate electricity needed for local life.

[0012] Furthermore, when vertical axis wind power generators are formed in multiple stages, a large number of power generating units M can be installed in one power generating facility, thereby increasing the space utilization rate.

[0013] Furthermore, when the vertical axis wind power generator is formed in a multi-tiered tower shape, the conical frame 130 is formed in layers with an internal space between each tier, and at least three or more supports 140 are fixed to the outer periphery of the conical frame 130 and extended to the ground, so that the generator can withstand strong winds. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a side view of four rotors 120 connected to a rotor shaft 110 of the present invention. [Figure 2] 1 is a diagram showing that the rotor 120 of the present invention is separated into one fixed wing 120a and two variable wing parts 120c and 120d. [Figure 3] 1 is a diagram showing that the rotor 120 of the present invention is separated into one fixed wing 120a and three variable wings 120b, 120c, and 120d. [Figure 4] 10A and 10B show a configuration in which two variable vanes 120c and 120d of the present invention are joined together in a bowl shape with the air port closed, and a configuration in which the fixed vane 120a is separated. [Figure 5] 10A and 10B are diagrams showing a configuration in which two variable vanes are combined in a bowl shape according to the present invention, and a completed rotor combined with a fixed vane 120a. [Figure 6] FIG. 1 is a cross-sectional view of a bowl-shaped completed rotor 120 of the present invention. [Figure 7]10 shows a configuration in which three variable vanes 120b, 120c, and 120d of the present invention are joined together in a bowl shape with the air outlet 120e closed, and a configuration in which the fixed vane 120a is separated. [Figure 8] This figure shows an overall bowl-shaped rotor 120 in which three variable vanes 120b, 120c, and 120d, which are connected to the fixed vane 120a in a manner that blocks the air port of the fixed vane 120a, are connected in a bowl-like shape with the air port of the present invention closed. [Figure 9] FIG. 1 is a cross-sectional view of a bowl-shaped completed rotor 120 of the present invention. [Figure 10] This is a diagram showing a state in which two variable vanes 120c and 120d connected by an elastic band 120f of the present invention are formed in a shape in which the gap is maintained, and therefore the air outlet 120e is open. [Figure 11] This figure shows the completed rotor 120 in a state in which two variable vanes 120c, 120d, which are connected in an open form with the air port 120e of the present invention, are connected to the fixed vane 120a and the air port is open. [Figure 12] FIG. 1 is a cross-sectional view of a completed rotor 120 with the air port of the present invention open. [Figure 13] 10 is a view showing a state in which three variable vanes 120b, 120c, and 120d connected by an elastic band 120f according to the present invention are connected and formed in a form in which a gap is maintained, and an air port 120e is open. [Figure 14] This figure shows the completed rotor 120 in a state in which three variable vanes 120b, 120c, and 120d, which are connected and formed in a form in which the air port 120e of the present invention is open, are connected to the fixed vane 120a while maintaining a gap between them, and the air port 120e is open. [Figure 15] 1 is a cross-sectional view of a completed rotor 120 with the air port of the present invention open. [Figure 16] 1 is an internal view of a conical frame 130 that is installed in each stage when the vertical axis wind power generator of the present invention is configured in multiple stages and has a space formed therein in which the power generating device M and the acceleration gear 150 are mounted. [Figure 17]1 is a cross-sectional view of the inside of a vertical axis wind power generator of the present invention formed in a multi-stage tower shape. [Figure 18] FIG. 1 is a diagram showing the vertical axis wind power generator of the present invention formed into a small single stage and installed at the top end of a street light pole. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings.

[0016] FIG. 1 is a side view of four circular rotor blades 120 connected to a vertically formed rotor shaft 110 of the present invention.

[0017] The rotor 120 connected to the vertical shaft is installed to rotate in only one direction for the convenience of power generation.

[0018] Due to the characteristics of the vertical shaft, the rotors 120 connected to the vertical shaft rotate in such a way that the rotors 120 located on the left side of the wind direction are subjected to a fair wind, and the rotors 120 located on the right side are subjected to a headwind.

[0019] In the present invention, the rotor 120 is divided into a fixed wing 120a and variable wings 120b, 120c, and 120d in order to maximize the wind pressure of a fair wind and minimize the wind pressure of a headwind when the rotor 120 rotates.

[0020] A circular air outlet 120e is formed in the center of the fixed vane 120a and the variable vanes 120b, 120c, and 120d. However, when several variable vanes are connected, the last variable vane connected does not have an air outlet 120e.

[0021] The rotor 120 is formed by combining a fixed wing 120a and variable wings 120b, 120c, and 120d. The process by which the rotor 120 is formed by the fixed wing 120a and variable wings 120b, 120c, and 120d will be described below.

[0022] The fixed wing 120a is connected to the rotor rotation shaft 110 by a fixed wing connection frame 120g. A first variable wing 120b is connected to the inside of the fixed wing 120a by four elastic bands 120f.

[0023] Two of the four elastic bands are connected to the left and right parts of the inner upper part of the fixed wing 120a and the left and right sides of the upper part of the first variable wing 120b, and the remaining two elastic bands are connected to the left and right parts of the lower part in the same manner.

[0024] After the fixed wing 120a and the first variable wing 120b are connected as described above, when wind pressure is generated by a favorable wind, the small diameter part of the first variable wing 120b is inserted and protrudes into the air outlet of the fixed wing 120a, and the large diameter part hangs over the air outlet of the fixed wing 120a.

[0025] Next, the second variable wing 120c is connected to the inside of the first variable wing 120b by four elastic bands 120f in the same manner as the fixed wing 120a and the first variable wing 120b, and when wind pressure is generated by a favorable wind, the small diameter part of the second variable wing 120c is inserted and protrudes into the air outlet of the first variable wing 120b, and the large diameter part is placed over the air outlet of the first variable wing 120b.

[0026] The third variable vane 120d is connected to the inside of the second variable vane 120c by four elastic bands 120f in the manner described above. When wind pressure is generated by a favorable wind, the small diameter portion of the third variable vane 120d is inserted into and protrudes from the air outlet of the second variable vane 120c, and the large diameter portion is placed over the air outlet of the second variable vane 120c, completing the rotor. When subjected to favorable wind pressure as described above, the entire rotor 120 is formed into a bowl shape, generating maximum favorable wind pressure.

[0027] 2 and 3 are diagrams showing a configuration in which the fixed wing 120a and the first, second and third variable wings 120b, 120c and 120d are separated.

[0028] The rotor 120 is divided into sections so that three variable blades are attached when it is formed into a large multi-stage tower, and one or two variable blades are attached when it is formed into a small single-stage for neighborhood living.

[0029] When only one variable vane is installed, a variable vane in the form of a third variable vane 120d without an air port is installed.

[0030] FIG. 4 shows a configuration in which two variable wings are joined together in a bowl shape and a configuration in which the fixed wings 120a are separated.

[0031] FIG. 5 is a diagram showing the completed bowl-shaped rotor 120 in which the two variable blades joined in a bowl shape are joined to a fixed blade 120a to close the air port.

[0032] FIG. 6 is a cross-sectional view of the bowl shape of the rotor 120 completed as described above.

[0033] Figures 7 and 8 show a form in which three variable vanes 120b, 120c, and 120d are connected in a bowl shape and a form in which the fixed vane 120a is separated, and show a completed bowl-shaped rotor 120 in which the three variable vanes connected in a bowl shape are connected to the fixed vane 120a to close the air port.

[0034] FIG. 9 is a cross-sectional view of the bowl shape of the rotor 120 completed as described above.

[0035] 10 and 11 show the rotor 120 in a state where two variable blades are connected together under adverse wind pressure, maintaining a distance between them and opening the air outlet 120e, and the two variable blades are connected to the fixed blade 120a, opening the air outlet.

[0036] FIG. 12 is a cross-sectional view of the completed rotor 120 with the air port open as described above.

[0037] 13 and 14 show the completed rotor 120 in a state where three variable vanes 120b, 120c, and 120d are connected together in a state where they are spaced apart from each other when facing a headwind and the air outlet 120e is open, and the three variable vanes 120b, 120c, and 120d are connected to the fixed vane 120a and the air outlet is open.

[0038] FIG. 15 is a cross-sectional view of the rotor 120 completed as described above.

[0039] It has been explained that the rotor 120 is divided into a fixed wing 120a and variable wings 120b, 120c, and 120d, and that as the rotor 120 rotates, it receives a tailwind when positioned on the left side of the wind direction and a headwind when positioned on the right side. However, it has also been explained that the rotor 120 that receives a tailwind has variable wings 120b, 120c, and 120d connected inside the fixed wing 120a while blocking the air outlet 120e, so that the entire rotor 120 is bowl-shaped, and the rotor 120 that receives a headwind has variable wings connected inside the fixed wing 120a while maintaining a gap between them, so that the air outlet 120e is open.

[0040] The vertical axis wind power generator of the present invention is based on the principle that at least three rotors 120 are connected to a rotor shaft 110 formed vertically at regular intervals and rotate to generate electricity.

[0041] In this case, the rotor 120 is connected to the rotor rotation shaft 110 formed vertically and rotates, so when it is in a position where the wind is blowing, it rotates while receiving the wind, and when it is in a position where the wind is blowing, it rotates while receiving the wind.

[0042] Therefore, in order for the vertical axis wind power generator of the present invention to maintain high-efficiency power generation, it is necessary to maximize the wind pressure of the rotor blades 120 in the case of a fair wind and minimize the wind pressure in the case of a headwind.

[0043] In order for the rotor 120 in a fair wind to receive the maximum wind pressure, as described above, the variable wings 120b, 120c, and 120d are connected inside the fixed wings 120a, and the interior is formed like a sealed bowl with a wide entrance and the air outlet 120e is closed, so that the wind does not escape and is concentrated inside the bowl, resulting in the maximum wind pressure.In order for the rotor 120 in a headwind to minimize the wind pressure, the variable wings 120b, 120c, and 120d are spaced apart from the fixed wings 120a, and the air outlet 120e is opened while maintaining space between the variable wings, so that the wind can escape with the minimum resistance, resulting in the minimum wind pressure.

[0044] The variable blades are preferably made of a light material so that they can move quickly even with small wind pressure to open and close the air outlet, while the fixed blades are preferably made of a strong material so that they can withstand strong winds.

[0045] As described above, the rotor 120 receives the maximum wind pressure when the wind is fair and receives the minimum wind pressure when the wind is against, so that the maximum rotational force is generated and the maximum power generation is possible.

[0046] FIG. 16 shows a conical frame 130 which is installed between each stage when the vertical axis wind power generator of the present invention is formed in a multi-stage tower shape to provide a space for installing the power generating device M and the acceleration gear 150 therein, and which has support holes 130a formed on the outer periphery through which at least three support columns 140 are vertically passed and fixed to the ground, thereby maintaining stability even in strong winds.

[0047] FIG. 17 is a cross-sectional view of the inside of a vertical axis wind power generator of the present invention formed in a multi-stage tower shape.

[0048] The tower-shaped vertical axis wind power generator has a conical frame 130 formed between each stage, and two power generating devices M and an acceleration gear 150 are installed inside the conical frame 130. Four support columns 140 are vertically pierced through the outer periphery of the conical frame 130 and extended to the ground.

[0049] FIG. 18 is a side view of the vertical axis wind power generator of the present invention formed into a small single stage and installed at the top end of a street light pole.

[0050] Because it is formed in a small single layer, it can be installed in a neighborhood, and in addition to streetlights, it can be installed on the roofs of rural houses and neighboring buildings to generate electricity needed for daily life. When installed in streetlights, a solar panel 160 can be installed on top of the generator.

[0051] In the vertical axis wind power generator of the present invention, the power generating devices are attached to the upper and lower ends of the rotor rotation shaft 110, but the power generating device M installed at the upper end of the street light pole as shown in Figure 18 is attached only to the lower end. [Explanation of symbols]

[0052] 110: Rotor shaft 120: Rotor 120a: Fixed wing 120b: First variable wing 120c: Second variable wing 120d: Third variable wing 120e: Air outlet 120f: Elastic band 120g: Fixed wing connecting frame 120h: Connecting frame fixing hole 130: Conical frame 130a: Support hole 130b: Rotating shaft hole 140: Support 150: Acceleration gear 160: Solar panel M: Power generation equipment

Claims

1. In a vertical axis wind turbine, the rotation axis is formed perpendicular to the ground. At least two or more conical frames (130) formed in layers to form an internal space; At least three or more support columns (140) that penetrate the outer periphery of the conical frame (130) vertically and are fixed to the ground; A rotor shaft (110) that is installed vertically between the cone frame (130) and rotates; The rotor shaft (110) is connected to the rotor shaft and is divided into a fixed wing (120a) and a plurality of variable wings (120b, 120c, 120d). The variable wing (120b) is connected to the fixed wing (120a) by an elastic band (120f), the variable wing (120c) is connected to the variable wing (120b) by an elastic band (120f), and the variable wing (120d) is connected to the variable wing (120c) by an elastic band (120f). When a favorable wind pressure acts on the variable wings (120b, 120d), and a rotor (120) in which the variable wings (120b, 120c, 120d) move in a direction away from the fixed wing (120a) while connected by the elastic band (120f), expanding the internal space and widening the area subjected to wind pressure, and when wind pressure from a headwind acts, the variable wings (120b, 120c, 120d) move toward the fixed wing (120a), creating spaces between the fixed wing (120a) and the variable wings (120b) and between the variable wings (120b) and the variable wings (120c), allowing part of the headwind to pass through the spaces; an acceleration gear (150) installed inside the conical frame (130) and connected to the upper and lower ends of the rotor shaft (110); a power generating device (M) connected to the acceleration gear (150) for producing electricity.

2. A vertical axis wind turbine in which the rotation axis is formed perpendicular to the ground, At least two or more conical frames (130) formed in layers to form an internal space; At least three or more support columns (140) that penetrate the outer periphery of the conical frame (130) vertically and are fixed to the ground; A rotor shaft (110) that is installed vertically between the cone frame (130) and rotates; At least three rotors (120) each divided into a fixed blade (120a) and a variable blade (120b, 120c, 120d), each having a circular air outlet (120e) formed at the center, and connected to the rotor shaft (110) at equal intervals; an acceleration gear (150) installed inside the conical frame (130) and connected to the upper and lower ends of the rotor shaft (110); a generator (M) coupled to the acceleration gear (150) for producing electricity; The rotor (120) includes a fixed blade (120a) having a first variable blade (120b), a second variable blade (120c), and a third variable blade (120d) connected to the inside thereof, and an air port (120e) is opened and closed as the variable blades move due to wind pressure; the first variable vane (120b) to which the second variable vane (120c) and the third variable vane (120d) are connected respectively on the inside, and the variable vane (120b) moves in response to wind pressure to open and close an air port (120e); the second variable vane (120c) to which the third variable vane (120d) is connected inside, and the variable vane (120d) moves in response to wind pressure to open and close the air outlet (120e); and a third variable blade (120d) that is connected to the inside of the second variable blade (120c) and moves due to wind pressure to open and close the wind port (120e) of the variable blade.

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