KR20100096945A - 2-axis control device for solar trace - Google Patents

Abstract

PURPOSE: A 2-axis control device for solar trace is provided to increase the adjustment range of a yawing angle and reduce the size of equipment, since a worm gear is used in an elevation angle adjusting unit. CONSTITUTION: A 2-axis control device for solar trace comprises a light-collecting plate(100), an elevation angle adjusting unit(200), and an azimuth angle adjusting unit(300). The light-collecting plate obtains energy from sunlight. The elevation angle adjusting unit is connected to the rear surface of the light-collecting plate to control the yawing angle of the light-collecting plate. The azimuth angle adjusting unit controls the swing angle of the elevation angle adjusting unit. The elevation angle adjusting unit comprises a support(202), an elevation angle control axis, an elevation angle worm gear(220), an elevation angle regulating motor, an elevation angle adjusting housing(240).

Description

2-axis control device for solar trace

The present invention relates to a control device for tracking the azimuth and the altitude angle of the solar light collecting plate of the photovoltaic system, and more particularly, to adjust the swing angle of the light collecting plate corresponding to the azimuth angle of the sun. The present invention relates to a solar tracking two-axis control apparatus including an altitude angle adjusting unit configured to adjust a yawing angle of a light collecting plate in response to an altitude angle of the sun.

Typically, the solar tracking device measures the altitude and azimuth angle of the sun, or according to a pre-programmed method according to the time, the solar heat collecting device or solar light collecting plate of the solar tracking device tracks the sun so that the solar light is incident in the vertical direction. It is a device to make it possible.

Here, the light collecting plate is a concept including both a panel panel for absorbing sunlight, such as a solar heat collecting panel that obtains thermal energy from sunlight and a solar power generating panel that obtains electrical energy from sunlight.

In general, solar tracking is a swing operation of a solar tracking device that tracks the azimuth angle of the sun by turning a light collecting plate around a swing axis in a vertical direction, and a yawing axis in a horizontal direction (left and right directions). It is made by yawing operation of a solar tracking device that tracks the altitude angle of the sun by rotating a light collecting plate or the like.

Conventional solar tracking device is disclosed in Korea Utility Model Model No. 20-0438025 (January 17, 2008). The disclosed solar tracking device is configured to adjust the inclination angle of the light collecting plate by operating the screw jack according to the altitude angle of the sun, and to operate the worm gear connected to the main shaft tube to control the altitude angle.

Conventional solar tracking device having such a configuration and operation has a problem that the weight of the light collecting plate is concentrated at the screw jack connection point in a manner of controlling the altitude angle by the operation of the screw jack, and also to operate the screw jack in the longitudinal direction. As a screw part is required, the light collecting plate support has a long problem in installation.

The present invention has been made in view of the above-mentioned conventional problems, and eliminates the problem of concentrating the load of the light collecting plate on the driving connection by eliminating the screw jack that was conventionally required in the solar tracking device, and reducing the length of the light collecting plate support. It is an object of the present invention to provide a solar tracking two-axis control device to enable it.

It is another object of the present invention to provide a solar tracking two-axis control device that improves the convenience of assembly, maintenance and maintenance by allowing the easy-to-decompose assembling is formed independently of the altitude control unit and the azimuth control unit.

The present invention provides a light collecting plate that obtains energy from sunlight; An elevation angle control unit connected to a rear surface of the light collecting plate to adjust a yawing angle of the light collecting plate; And an azimuth angle adjusting unit for adjusting a swing angle of the altitude angle adjusting unit to which the light collecting plate is connected.

The altitude angle control unit is fixed to the back of the light collecting plate; An elevation angle control shaft fixed to the support in a state spaced parallel to the light collecting plate; An elevation angle worm gear including a first worm wheel fixed to the elevation angle adjustment shaft and a first worm meshed with the first worm wheel; An elevation angle control motor for driving the first worm; And an altitude angle adjusting housing accommodating the altitude angle worm gear and the altitude angle adjustment motor and rotatably supporting the altitude angle adjustment shaft.

Preferably, the altitude angle control unit and the azimuth angle control unit are detachably connected to the main shaft tube, and the altitude angle adjusting housing includes an axis support to which the altitude angle adjusting shaft is rotatably coupled, and accommodates the altitude angle worm gear. It is preferable to include a gear box and a base plate detachably coupled to the main shaft pipe.

And, the azimuth angle adjusting portion is formed to be rotatable in a direction orthogonal to the altitude angle adjusting shaft and coupled to the azimuth angle adjusting housing; An azimuth worm gear including a second worm wheel fixed to the azimuth adjustment shaft and a second worm meshed with the second worm wheel; An azimuth adjustment motor for driving the second worm; And an azimuth adjustment housing housing the azimuth worm gear and the azimuth adjustment motor.

The solar tracking 2-axis control apparatus according to the present invention has an effect of increasing the adjustment range of the yawing angle and miniaturizing the equipment by using a worm gear in the altitude angle control unit for controlling the yawing angle. .

In addition, the present invention has the effect of increasing the durability of the equipment by preventing the load of the light collecting plate to be concentrated on the drive connection, and to be distributed.

In addition, the solar tracking two-axis control device according to the present invention is configured to be detachably attached to the altitude angle control unit, the main shaft tube, the azimuth angle control unit also has the effect of facilitating assembly, disassembly, maintenance.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a solar tracking two-axis control device according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 1 schematically shows the elevation angle and azimuth angle according to the position of the sun.

There are many ways to represent the sun's position in three dimensions in two dimensions, but the easiest way is to focus on the horizon the observer is on.

This is called the horizontal coordinate, which indicates the position of the object in azimuth and elevation. The azimuth is the horizontal angle measured from the north or south to the celestial body in the clockwise direction, and ranges from 0 ° to 360 ° (in the drawing shown, the azimuth angle of the north point is set to 0 °).

Elevation angle is the vertical angle (height) measured from the horizon to the celestial body. The measurement range is 0 to 90 °. However, in the case of the solar tracking device to control the altitude angle continuously, it must be able to control in the range of 0 ~ 180 °.

In FIG. 1, when the sun S is at the position as shown, the azimuth angle becomes α, and the elevation angle becomes β.

To track the azimuth angle, the swing angle, which is the angle of rotation about the swing axis perpendicular to the ground, must be adjusted. To track the altitude angle, the angle of rotation about the yawing axis in the horizontal direction is required. Yawing angle should be adjusted.

The present invention provides a solar tracking two-axis control device capable of independently controlling the swing angle of the azimuth control shaft and the yawing angle of the elevation control shaft at 360 ° and 180 °, respectively.

Figure 2 is a block diagram showing the front internal structure of the solar tracking 2-axis control device according to the present invention, Figure 3 is a block diagram showing the internal structure of the solar tracking 2-axis control device according to the present invention.

The solar tracking 2-axis control device according to the present invention is a swing angle and yawing angle of the light collecting plate so that the light is incident in the vertical direction to the light collecting plate 100 that receives the sunlight is located on the top To control.

Referring to Figure 2, the solar tracking two-axis control device according to the present invention can be largely divided into three parts, the light collecting plate 100, the altitude control unit 200 and the azimuth control unit 300, each of the parts Independently formed to operate independently without interference from other parts, and can be disassembled and assembled independently.

First, a light collecting plate 100 having a flat plate shape and performing a function of receiving sunlight, such as a solar heat collecting panel that obtains thermal energy from sunlight or a power generating panel that obtains electrical energy from sunlight, and

An altitude angle control unit 200 connected to the rear surface of the light collecting plate 100 to adjust a yawing angle of the light collecting plate 100 so that the light collecting plate 100 can track the altitude angle of the sun;

In order to track the azimuth angle of the sun, the light collecting plate 100 includes an azimuth angle adjusting unit 300 for adjusting a swing angle of the altitude angle adjusting unit 200 connected to the light collecting plate 100.

The altitude angle control unit 200 and the azimuth angle control unit 300 is connected to the spindle tube 250, the spindle tube 250 is on the ground of the light collecting plate 100 when the yawing angle of the light collecting plate 100 is adjusted. It serves to secure the height of the light collecting plate 100 so as not to contact or interfere. In addition, the main shaft pipe 250 also serves as a swing (swing) shaft for rotating the altitude angle control unit 200.

The light collecting plate 100 is connected to the altitude angle adjusting unit 200 so that the vertical angle (yawing angle) is adjusted, and the azimuth angle adjusting unit 300 is a horizontal angle (swing) of the altitude angle adjusting unit 200. Angle) to provide a structure for adjusting the horizontal angle of the light collecting plate 100 connected thereto.

The altitude angle control unit 200 and the azimuth angle control unit 300 are independently controlled to control the angle so that the light collecting plate 100 can track the altitude and azimuth angle of the sun.

First, look at the connection of the light collecting plate 100 and the altitude angle control unit 200. A pair of supports 202 are attached to the rear surface of the light collecting plate 100. The support 202 may use a triangular support having a triangular shape when viewed from the side as shown in FIG. 2. The use of a pair of triangular supports can disperse load load points in two places, which brings the advantage of avoiding concentration of load.

For smooth operation, the support 202 is preferably formed to be symmetrical with respect to the center of gravity of the light collecting plate 100, and the altitude angle adjusting shaft 210 connected to the support 202 has a center of gravity of the light collecting plate 100 and the center of gravity. It is more preferable if it is formed to be fixed in parallel. The support 202 distributes the load of the light collecting plate 100 to both sides and transmits the load to the elevation angle adjusting shaft 210. Therefore, it is possible to prevent equipment failure due to concentration of load and increase durability.

The support 202 is formed in the shape of a triangle so that one surface of the triangle is attached to the rear surface of the light collecting plate 100, and the elevation angle adjustment shaft 210 is fixed to the edge of the lower end portion. The elevation angle adjusting shaft 210 is fixed in a direction parallel to the rear surface of the light collecting plate 100 by the support 202, and is fixed to the rear surface of the light collecting plate 100 at a predetermined distance. The reason for having the separation distance is to secure an operating space of the first worm wheel 222 connected to the elevation angle control shaft 210.

Here, the support 202 and the elevation angle adjusting shaft 210 are coupled so as not to rotate, and when the elevation angle adjusting shaft 210 rotates, the light collecting plate 100 connected to the support 202 rotates together. Therefore, the yawing angle of the light collecting plate can be adjusted by rotating the elevation angle adjusting shaft 210.

In order to securely connect the support 202 and the elevation angle adjusting shaft 210, the cross section of the elevation angle adjusting shaft 210 of the portion coupled with the support 202 may have a polygonal cross-sectional shape such as a rectangle, a pentagon, a hexagon, or the like. It is preferable to have a circular cross-sectional shape in which part is cut off. When the elevation angle adjusting shaft 210 is coupled to the support 202 having a circular cross section, the support 202 may rotate with respect to the elevation angle adjusting shaft 210, and it is difficult to fix it in the correct direction. to be.

In addition, the elevation angle adjustment shaft 210 is also connected to the elevation angle adjustment housing 240. However, this part is rotatably connected. That is, the altitude angle adjustment shaft 210 is rotatably connected to the altitude angle adjustment housing 240 while being fixed to the support 202. Therefore, when the elevation angle control shaft 12 rotates with respect to the elevation angle adjustment housing 240, the support 202 fixed thereto is rotated together to adjust the yawing angle of the light collecting plate 100.

As described above, the elevation angle control housing 240 includes a shaft support 244 to which the elevation angle adjustment shaft 210 is rotatably coupled, a gear box 242 to accommodate the elevation angle worm gear 220 to be described later, It includes a base plate 246 detachably coupled to the spindle tube (250).

On the other hand, the elevation angle control shaft 210 is rotated by the elevation angle worm gear 220. Looking in more detail, the elevation angle worm gear 220 is composed of a first worm wheel 222 fixed to the altitude angle control shaft 210 and a first worm 224 engaged with the first worm wheel 222. , The first worm 224 is connected to the elevation angle control motor (230 of Figure 3). By adjusting the yawing angle of the elevation angle adjusting shaft 210 with the engagement of the first worm wheel 222 and the first worm 224, precise angle control is possible, and the size can be reduced as compared with a conventional screw jack. There are advantages to it.

When the elevation angle control motor 230 is rotated, the first worm 224 connected thereto is rotated, and the elevation angle adjustment shaft 210 is rotated while the first worm wheel 222 engaged therewith rotates the yaw of the light collecting plate. yawing) The angle is changed.

Conventional elevation angle control method is to use a screw jack, the control angle range is less than 180 °, there was a problem that the main shaft tube must be formed for the change of the length of the screw jack, the present invention is the first worm gear 220 By controlling the altitude angle using), the adjustment angle range can be secured beyond 180 °, and its size can be reduced.

The altitude adjustment housing 240 serves to protect the altitude worm gear 220 and the altitude adjustment motor 230 to protect from the outside, and also to support the altitude adjustment shaft 210 to be rotatable. To perform. On the other hand, the altitude angle adjusting housing 240 is configured such that the base plate 246 of the bottom surface is connected to the main shaft pipe 250 to be rotated by the azimuth angle adjusting unit 300. At this time, the connection of the base plate 246 and the spindle tube 250 is preferably fixed using a fastening means that can be attached and detached, such as bolts and nuts.

In addition, the spindle tube 250 preferably forms an upper flange 252 for dispersing the load of the base plate 246 on the top and facilitating fastening.

Hereinafter, the azimuth control unit 300 will be described.

The azimuth adjustment unit 300 rotates the altitude adjustment unit 200 in a horizontal direction to adjust a swing angle, so that the light collecting plate 100 can track the azimuth angle of the sun.

The azimuth adjustment unit 300 is formed to be rotatable in a vertical direction to the altitude control shaft 210 formed in the horizontal direction in the altitude control unit 200, the azimuth control coupled to the altitude control housing 240 The shaft 310 is provided to reduce the azimuth angle of the elevation angle adjusting unit 200 and the light collecting plate 100 coupled thereto by rotating the azimuth adjusting shaft 310.

The azimuth adjustment shaft 310 is formed in a vertical direction with respect to the ground, and is coupled to the elevation angle adjustment unit 200 via the main shaft pipe 250.

The azimuth adjustment shaft 310 is connected to the azimuth adjustment motor 330 by the azimuth worm gear 320.

The azimuth worm gear 320 includes a second worm wheel 322 fixed to the azimuth adjustment shaft 310 and a second worm 324 engaged with the second worm wheel 322, wherein the second worm 324 is It is connected to the azimuth control motor 330.

As the azimuth adjustment motor 330 rotates in the forward or reverse direction, the second worm 324 rotates the second worm wheel 322, and the azimuth adjustment shaft 310 fixed to the second worm wheel 322 is clockwise. Direction or counterclockwise rotation.

The azimuth angle adjustment shaft 310 is connected to the altitude angle adjustment unit 200 via the main shaft tube 250, and the light collecting plate 100 is connected to the altitude angle adjustment unit 200, the azimuth angle adjustment shaft 310 The swing angle of the light collecting plate 100 is adjusted according to the rotation of the light to track the azimuth angle of sunlight.

By the way, since the azimuth control shaft 310 is to rotate the main shaft pipe 250, the altitude angle control unit 200, the light collecting plate 100 is connected to the upper portion, a large load is applied to the azimuth control shaft 310. The bearing unit 350 is provided between the upper surface of the azimuth control housing 340 and the lower flange 254 of the main shaft pipe 250 to distribute the concentrated load and to facilitate the rotation of the azimuth control shaft 310. It is preferable.

The bearing portion 350 is preferably composed of a thrust bearing (bearing) bearing the load in the axial direction. The thrust bearing serves to distribute the load in the vertical direction that the azimuth adjustment shaft 310 receives, and to reduce the rotational friction force of the azimuth adjustment shaft 310.

The swing angle control range of the azimuth controller 300 is preferably 0 to 360 °. 1, the azimuth angle ranges from 0 ° to 360 ° when the sun position is represented by the azimuth angle and the altitude angle.

Figure 4 is an internal configuration showing the elevation angle control unit of the solar tracking 2-axis control device according to the present invention, Figure 5 is a state in which the azimuth angle control unit and the main shaft pipe of the solar tracking 2-axis control device according to the invention The internal configuration diagram is shown.

4 and 5, the solar tracking two-axis control device according to the present invention, the altitude angle control unit 200 and the azimuth angle control unit 300 are formed independently of each other, they are in the main shaft pipe 250 Are combined.

The spindle tube 250 is provided with an upper flange 252 and a lower flange 254 for tight coupling and load distribution. The upper flange 252 is screwed with the base plate 246 of the altitude adjustment housing 240, the lower flange 254 is supported by the bearing portion 350 and is coupled to the azimuth adjustment shaft 310.

When the upper flange 252 and the base plate 246 are separated, the upper angle of the height adjustment unit 200 is separated as shown in Figure 4, the lower portion of the main shaft tube 250 as shown in Figure 5 And is separated into azimuth control unit 300.

Thus, if the altitude angle control unit 200 and the azimuth angle control unit 300 is formed independently and easily removable, the assembly or disassembly is easy, the transport or installation is easy, and the maintenance and maintenance work is convenient. Bring it.

As described above, according to the solar tracking two-axis control device according to the invention it is possible to reduce the length of the light collecting plate support by eliminating the screw jack conventionally required in the solar tracking device.

In addition, a pair of supports are arranged on the rear surface of the light collecting plate, and the load of the light collecting plate is distributed and transmitted by separating the action points of the load into two places. In addition, the cross-sectional shape of the elevation control shaft is formed into a polygon or a circular cut portion to prevent the slip between the elevation control shaft and the support to enable a stable power transmission.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a conceptual diagram showing the altitude and azimuth according to the position of the sun,

Figure 2 is a block diagram showing the internal structure of the front of the solar tracking 2-axis control device according to the present invention,

Figure 3 is a block diagram showing the internal structure of the solar tracking 2-axis control device according to the invention,

Figure 4 is an internal configuration showing an altitude angle control unit of the solar tracking 2-axis control device according to the invention,

Figure 5 is an internal configuration showing a state in which the azimuth control unit and the main shaft pipe of the solar tracking 2-axis control device according to the present invention.

Explanation of symbols on main parts of the drawings

100: light collecting plate 200: altitude angle control unit

210: altitude angle control shaft 220: altitude angle worm gear

230: altitude angle adjustment motor 240: altitude angle adjustment housing

250: spindle pipe 300: azimuth control unit

310: azimuth control shaft 320: azimuth worm gear

330: azimuth adjustment motor 340: azimuth adjustment housing

350: bearing part (thrust bearing)

Claims (9)

A light collecting plate for obtaining energy from sunlight; An elevation angle control unit connected to a rear surface of the light collecting plate to adjust a yawing angle of the light collecting plate; And And an azimuth angle adjusting unit configured to adjust a swing angle of the altitude angle adjusting unit to which the light collecting plate is connected. The altitude angle control unit, A support fixed to the rear surface of the light collecting plate; An elevation angle control shaft fixed to the support in a state spaced parallel to the light collecting plate; An elevation angle worm gear including a first worm wheel fixed to the elevation angle adjustment shaft and a first worm meshed with the first worm wheel; An elevation angle control motor for driving the first worm; And And an altitude adjustment housing configured to accommodate the worm gear and the altitude angle adjustment motor, and to rotatably support the altitude angle adjustment shaft. The method of claim 1, The support is a solar tracking two-axis control device, characterized in that the triangular support. The method of claim 1, The portion fixed to the support of the elevation angle control shaft is a solar tracking two-axis control device, characterized in that it has a polygonal cross-sectional shape or a portion of the circular cross-sectional shape cut away. The method of claim 1, The altitude angle adjusting housing includes a shaft support to which the altitude angle adjusting shaft is rotatably coupled, a gear box for receiving the altitude angle worm gear, and a base plate detachably coupled to the main shaft pipe. Solar tracking 2-axis controller. The method of claim 1, The azimuth control unit An azimuth angle adjusting shaft which is rotatably formed in a direction orthogonal to the height angle adjusting shaft and coupled to the altitude angle adjusting housing; An azimuth worm gear including a second worm wheel fixed to the azimuth adjustment shaft and a second worm meshed with the second worm wheel; An azimuth adjustment motor for driving the second worm; And And an azimuth adjustment housing housing the azimuth worm gear and the azimuth adjustment motor. The method of claim 5, The azimuth adjustment shaft is exposed to the upper portion of the azimuth adjustment housing and fixed to the main shaft pipe, The main shaft pipe is a solar tracking 2-axis control device, characterized in that fixed to the elevation angle housing. The method of claim 6, The main shaft pipe is provided with a lower flange, the solar tracking two-axis control device characterized in that it comprises a bearing between the lower flange and the elevation angle control housing. The method of claim 6, The main shaft pipe is a solar tracking two-axis control device, characterized in that detachably assembled to the azimuth control shaft and the altitude angle control housing. The method of claim 1, The altitude angle control unit is controlled in the yawing angle of 180 ° range, The azimuth control unit is a solar tracking two-axis control device, characterized in that the swing angle is controlled in a 360 ° range.

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