KR20110091127A - Wing assembly for wind power generation - Google Patents

Abstract

PURPOSE: A blade assembly for wind power generation is provided to enhance generation performance since a blade assembly can smoothly rotate by wind regardless of the direction of the wind. CONSTITUTION: A blade assembly for wind power generation comprises a hub(10), arms(20), a frame(32) and a blade unit(30). The hub comprises a rotating shaft. The arms are rotatably coupled to the hub at regular intervals in the circumferential direction. The frame is coupled to each arm. The blade unit comprises first and second blades. The blades are coupled to the frame to have a ventilation hole on their joints. Cross section of the blade is an arc shape.

Description

WING ASSEMBLY FOR WIND POWER GENERATION

The present invention relates to a wing assembly for wind power generation, and more particularly, to a wing assembly for use in a wind turbine generating electric energy by rotating by wind power, the force of wind.

In general, the wind power generator rotates the blades by the wind force, the force of the wind to generate electrical energy by the rotational force generated at this time. In addition, the wind power generator is an apparatus capable of generating power using the wind, which is an unlimited, clean energy source for no-cost, and the cost aspects such as improving the price competitiveness of power generation unit cost by each power source and minimizing the required area of the power generation system, and fossils The speed of dissemination is accelerating because it has advantages in many aspects, such as socio-environmental aspects of energy depletion and global environmental protection against energy depletion, and economic aspects of supply stability and reduced dependence on energy imports.

Such a wind turbine generator basically consists of a wing assembly that generates rotational force by wind and a power generation mechanism that generates electrical energy by rotation of the wing assembly.

The wing assembly is a hub of rotation and has a rotation axis (hub), a plurality of arms coupled to the hub at regular intervals along the circumferential direction and the wings coupled to each of the arms in an arc shape to rotate substantially by wind It includes a unit.

However, when the hub of the wing assembly is disposed perpendicular to the ground so that the wind blows in a direction perpendicular to the rotation axis, that is, in a direction horizontal to the ground, the wing unit faces the wind at any position during the rotation. Its rotation can be interfered with.

An object of the present invention is to provide a wind turbine blade assembly that can rotate smoothly even when the wind blows from the direction perpendicular to the axis of rotation.

In order to achieve the above object of the present invention, a wind turbine blade assembly according to one aspect includes a hub, a plurality of arms and a wing unit.

The hub has an axis of rotation. The arms are rotatably coupled to the hub at regular intervals along the circumferential direction. The wing unit may include a wing unit including a frame coupled to each of the arms, and first and second wings coupled to the frame such that a cross section has an arc shape and a vent hole through which wind passes through a portion where the cross section meets each other. do.

At this time, the end of the first wing extends more than the end of the second wing so that the direction of the wind changes in the direction of the second wing.

In addition, each of the first and second vanes may have a radius of curvature in the direction of the vent hole smaller than a radius of curvature in a direction opposite to the vent hole.

In addition, the frame may be coupled such that the first and second wings are inclined at an angle of 50 to 70 ° with the ground.

On the other hand, the wing assembly may further include a support member for supporting the arms by connecting each of the arms and the hub.

Alternatively, the wing assembly may further include a guide member coupled to an intermediate portion of the arms to guide rotation of the arms, and a support member connecting the guide member and the hub to support the arms.

According to such a wind turbine blade assembly, even when the wind blows in a direction perpendicular to the axis of rotation of the blade assembly, that is, horizontal to the ground, the blade unit is provided through the ventilation holes formed in the intersection of the first and second wings By passing the wind when rotating in a position facing the wind, it can be performed smoothly without interfering with the rotation.

Accordingly, as the wind blows in any direction, the wing assembly may smoothly rotate by the wind, thereby improving power generation performance.

1 is a view schematically showing a wing assembly for wind power generation according to an embodiment of the present invention.
FIG. 2 is a view specifically illustrating a coupling state of a wing unit of the wing assembly illustrated in FIG. 1.
3 is a cross-sectional view taken along the line II ′ of FIG. 2.
4 is a view illustrating in detail a state in which the first and second wings of the wing unit shown in FIG. 2 are inclined.

Hereinafter, with reference to the accompanying drawings will be described in detail for the wing assembly for wind power generation according to an embodiment of the present invention. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a view schematically showing a wing assembly for a wind power generation according to an embodiment of the present invention, Figure 2 is a view showing in detail the coupling state of the wing unit of the wing assembly shown in FIG.

1 and 2, the wing assembly 100 for wind power generation according to an embodiment of the present invention includes a hub 10, a plurality of arms 20, and a wing unit 30.

The hub 10 plays a pivotal role in the wing assembly 100 and has a rotation axis 12. The hub 10 is connected to an external power generator (not shown) to transmit the rotational force generated from the wing assembly 100 to the power generator. The hub 10 is fixed directly to the ground 1 and is disposed perpendicular to the ground 1. Alternatively, the hub 10 may be horizontally fixed to the ground 1 through a support stand (not shown) fixed to the ground 1.

Arms 20 are rotatably coupled to hub 10 at regular intervals along the circumferential direction. Each of the arms 20 has a structure extending in a direction perpendicular to the hub 10 from an upper portion of the hub 10. Thus, when the hub 10 is disposed perpendicular to the ground 1, the arms 20 may have a structure disposed in parallel with the ground 1.

These arms 20 are configured to rotate substantially by the wind (w), each of which prevents the power generation performance is reduced due to the reduction in the rotational force, so that the pipe is thin so that the maximum influence from the wind (w) Or it may have a rod shape. At this time, since each of the arms 20 should be able to support the wing unit 30 to be described below, the diameter can be configured to have at least the necessary stress.

The wing unit 30 comprises a frame 32 and first and second wings 33, 34. The frame 32 is coupled to the end of each of the arms 20. The first and second vanes 33, 34 are coupled to the frame 32. At this time, each of the first and second vanes 33 and 34 is coupled at the inside and the outside of the frame 32 so as to be disposed in parallel with the ground 1 in a direction substantially perpendicular to the ground 1.

Each of the first and second vanes 33 and 34 has an arc shape in cross section to rotate the arms 20 while holding the wind w. Thus, the first and second wings 33 and 34 may be formed in the shape of the overall cross-section "3".

In addition, the first and second wings 33 and 34 may be coupled to at least one auxiliary frame 35 to maintain its shape at the upper portion and the lower portion. The auxiliary frame 35 has a configuration substantially the same as that of the frame 32, and when the lengths of the first and second wings 33 and 34 are relatively long, the auxiliary frame 35 may be coupled between the upper part and the lower part.

The first and second wings 33 and 34 are coupled to the frame 32 and the auxiliary frame 35 so as to have an air vent 36 through which wind (w) passes in a portion where they meet each other. The vent 36 is formed substantially in parallel with the first and second vanes 33, 34.

The ventilation holes 36 are provided with the first and second wings 33 and 34 when the wind w is blown in a direction perpendicular to the hub 10 that is the rotation axis 12, that is, in a direction horizontal to the ground 1. When rotating while facing the blowing wind (w), the wind (w) is passed through it can be prevented that the rotation is interfered by the wind (w).

Accordingly, even when the wind (w) is blown in any direction, the wing assembly 100 can smoothly perform the rotation by the wind (w), thereby improving the power generation performance accordingly.

Hereinafter, the structure of the vent hole 36 will be described in more detail with reference to FIG. 3.

3 is a view showing the first and second wings of the wing unit shown in FIG.

Referring further to FIG. 3, the end of the first wing 33 has a guide portion 37 extending in the direction of the second wing 34 from the vent 36 through which the wind w passes.

Thus, since the first wing 33 is coupled to the inside of the frame 32, the wind (w) passing through the vent hole 36 is inclined in the outward direction of the frame 32 by the guide portion 37 do. Thus, the wind w passing through the vent 36 provides centrifugal force to each arm 20 to which the first and second vanes 33 and 34 are coupled through the frame 32, thereby reducing the force of the arms 20. It can assist with rotation.

On the contrary, instead of the first wing 33, the guide part 37 may be configured toward the first wing 33 at the vent 36 of the second wing 34. In this case, the wind (w) passing through the vent hole 36 is inclined in the inward direction of the frame 32 by the guide portion 37, thereby providing a centripetal force opposite to the centrifugal force and direction to each arm 20 The rotation of the arms 20 may be assisted.

In this case, each of the first and second vanes 33 and 34 has a direction in which the first curvature radii R1 and R3 in the direction of the vent 36 are opposite to the vent 36 based on the vertices SP1 and SP2. It may be smaller than the second radius of curvature (R2, R4).

In other words, each of the first and second wings 33 and 34 is gently formed from the outside toward the vertices SP1 and SP2 so as to accommodate the wind w for rotation and to receive the vertices SP1 and SP2. After passing through the vent hole 36 is rapidly formed to allow the wind (w) that interferes with rotation through the vent hole 36 to pass through better.

Specifically, if the first radius of curvature (R1, R3) is configured to be less than about 1: 0.5 less than the second radius of curvature (R2, R4) vent holes 36 of each of the first and second vanes (33, 34) If the wind (w) for the rotation in the direction hardly accommodates the (w), and if the configuration is small to a level exceeding about 1: 0.8, the wind (w) is not smoothly passed through the vent 36 It is not desirable because it is not. Therefore, it is preferable that the first curvature radii R1 and R3 be configured to be smaller than the second curvature radii R2 and R4 at a ratio of about 1: 0.5 to 0.8.

Hereinafter, a state in which the first and second wings 33 and 34 are coupled to the frame 32 and the auxiliary frame 35 will be described in more detail with reference to FIG. 4.

4 is a view illustrating in detail a state in which the first and second wings of the wing unit shown in FIG. 2 are inclined.

Referring to FIG. 4 further, the first and second vanes 33 and 34 are framed to rotate even when the wind w is blown in a direction horizontal to the rotation axis 12, that is, perpendicular to the ground 1. The 32 and the auxiliary frame 35 are coupled to the ground 1 in an inclined state. In other words, the frame 32 and the auxiliary frame 35 to which the first and second wings 33 and 34 are coupled may be tilted to each arm 20.

Thus, when the first and second vanes 33 and 34 are inclined at an angle of less than about 50 ° with the ground 1, the first and second vanes 33 and 34 are blown in a direction perpendicular to the rotation axis 12, that is, in a direction parallel to the ground 1. It may not receive it against the coming wind (w) and may not rotate as it is, and when it is inclined at an angle exceeding about 70 °, it is in a direction horizontal to the rotation axis 12, that is, a direction perpendicular to the ground 1. The wind (w) from the wind does not accept it, so it may not pass through as it is, is not desirable (w). Thus, the first and second vanes 33, 34 are preferably inclined at an angle of about 50 to 70 ° with the ground 1.

Meanwhile, the wing assembly 100 may further include a guide member 40 coupled to an intermediate portion of the arms 20, and a support member 50 connecting the guide member 40 and the hub 10. The guide member 40 is formed in a circular shape to be coupled to the arms 20 to guide the first and second wings 33 and 34 when they rotate by the wind w.

The support member 50 may support the arms 20 through the guide member 40 to prevent shaking when the arms 20 are rotated by the first and second wings 33 and 34. In contrast, when the support member 50 is not provided, the support member 50 may be rotatably connected to the arms 20 and the hub 10 instead of the guide member 40 to directly support the arms 20. have.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

w: wind 1: ground
10: hub 12: axis of rotation
20: arm 30: wing unit
32: frame 33: the first wing
34: second wing 36: ventilation holes
37: guide portion 40: guide member
50 support member 100 wing assembly

Claims (6)

A hub having a rotating shaft;
A plurality of arms rotatably coupled to the hub at regular intervals along the circumferential direction; And
And a wing unit having a frame coupled to each of the arms, and first and second wings coupled to the frame such that a cross section each has an arc shape and has a vent through which wind passes at a portion where the wind meets. Wing assembly. The wing assembly of claim 1, wherein the end of the first wing extends further than the end of the second wing such that the direction of wind changes in the direction of the second wing. The wind turbine assembly of claim 1, wherein each of the first and second vanes has a radius of curvature in the direction of the vent hole smaller than a radius of curvature in a direction opposite to the vent hole. The wind turbine assembly of claim 1, wherein the frame is coupled such that the first and second vanes are inclined at an angle of 50 to 70 ° with the ground. The wind turbine blade assembly of claim 1, further comprising a support member connecting the hubs to the respective hubs to support the arms. The method of claim 1,
A guide member coupled to an intermediate portion of the arms for guiding rotation of the arms; And
And a support member for connecting the guide member and the hub to support the arms.

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