KR20070058737A - The transmission device of sunlight - Google Patents

Abstract

A sunlight transmission device is provided to transmit the sunlight while minimizing energy loss, by minimally reducing the number of times that the sunlight is absorbed into an inner wall of a light transfer pipe, and totally reflecting the sunlight through reception of the sunlight at the great incident angle. A sunlight transmission device is composed of a light collecting unit(100) for collecting the incident sunlight and a light transfer pipe(200) for transmitting the sunlight to a desirable spot by totally reflecting the sunlight collected through the light collecting unit, at the inside. The light transfer pipe has a direct sunlight conversion unit(300) for making the sunlight progress in parallel to a center axis of the light transfer pipe by changing the progressive angle of the sunlight.

Description

Solar transmission device {The transmission device of Sunlight}

1 is a view showing a schematic configuration of a solar transmission apparatus according to the present invention,

2a, b is a view showing a direct light conversion unit according to an embodiment of the present invention;

3 is a view showing a direct light conversion unit according to another embodiment of the present invention;

Figure 4a is a cross-sectional view of the light transport tube according to the present invention,

4B is a cross-sectional view taken along line A-A of FIG. 4A;

5 is a view showing an optical transport pipe interconnected via a curved pipe line.

* Explanation of symbols on major parts of drawing *

100: light collecting means 200: light transport tube

210: transparent tube 220: internal reflection layer

230: protective tube 240: external reflection layer

250: curved pipe 260: reflector

300: the direct light conversion unit 310/330: convex lens

321: meniscus concave lens 322: meniscus convex lens

340: surface reflector

The present invention relates to a solar transmission apparatus, and more particularly, it is possible to transmit the concentrated solar light to a place where it is required efficiently with little energy loss, and thus can be utilized as an energy source in various fields such as power generation, heating, and lighting. It relates to a solar transmission device.

In general, solar light is infinitely preferred because it is inexhaustible and environmentally friendly, so it is most preferred as an alternative energy. Therefore, it is possible to produce hot water by generating electricity using solar cells or by accumulating solar heat. Has been used.

If the solar energy, which is a very useful energy source, can be efficiently transmitted to the place where it is required, it can be used as an alternative energy to many other fields that use electric energy in addition to the above method using solar light. The key to this is how to reduce the energy loss of sunlight in the transmission process.

Conventional Model Publication No. 1998-0004578 discloses a solar condensing transmission apparatus using a light pipe as a means for transmitting conventional solar light to a required place. The transmission apparatus includes a condensing means for condensing solar light. The light transmitting means composed of optical pipes with a reflective film formed therein, and the light dispersing means for dispersing the transmitted light as its components, reflects the sunlight incident on the optical pipes by the condensing means from the reflective film to the required place. Letting it be that technical feature.

However, in the above-described conventional transmission device, since the collected solar light proceeds inside the light pipe at various angles, sunlight incident at a small incident angle is inevitably absorbed by the light pipe itself even if a reflective film is formed. In case of transmitting a long distance, there is a problem that energy loss occurs through frequent incidence and repetitive processes.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to form a direct light conversion unit for changing the angle of travel to the linear axis parallel to the central axis of the light transport tube as much as possible Minimizing the number of incidents on the inner wall of the light transfer pipe during the light transfer process, and allowing the total reflection to be incident at a large angle of incidence, solar transmission that can efficiently transfer the sunlight to the place where energy is required while minimizing energy loss To provide a device.

Solar transmission apparatus according to the present invention for achieving the above object,

Condensing means for condensing the incident sunlight, and a light transport tube for totally internally reflecting the sunlight collected through the light converging means to the required point, the light transport pipe includes a light by changing the traveling angle of the sunlight Characterized in that the direct light conversion portion is provided in the center axis of the transfer pipe to be generally balanced linear light.

In one embodiment, the linear light conversion unit includes a convex lens that refracts incident sunlight and focuses the light, and linear light that is generally balanced on a central axis of the light transport tube by refracting sunlight behind the convex lens. It characterized in that it comprises a Meniscus lens to proceed to.

In another embodiment of the linear light conversion unit, the linear light conversion unit reflects the convex lens that refracts incident sunlight and collects the focal point, and the sun light that is dispersed through the focal point of the convex lens and is generally balanced on the central axis of the light transport tube. It characterized in that it comprises a curved surface reflecting portion to proceed in a straight light.

The light transport tube includes a hollow transparent tube through which all of sunlight is transmitted, an inner reflection layer formed on an inner circumferential surface of the transparent tube to reflect incident sunlight, and a protective tube surrounding the outside of the transparent tube. It features.

In addition, the light transport tube is characterized in that the outer reflection layer for reflecting back to the inner side of the transparent tube is not reflected from the inner reflection layer is further formed on the outer peripheral surface of the transparent tube.

On the other hand, the solar transmission apparatus according to the present invention is characterized in that the linear light conversion unit is provided in the connection portion when one or more light transport pipes are interconnected.

In addition, when the light pipes are connected to each other at different angles through the curved pipe line, a reflector is provided to reflect the sunlight at the angle inside the curved pipe line.

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

1 is a view showing a schematic configuration of a solar transmission apparatus according to the present invention, the solar transmission apparatus according to the present invention, as shown in the drawing, the light collecting means 100 and the light collecting means 100 for condensing sunlight And a light transport tube 200 for transmitting the solar light collected by the light to a required point, and is provided in the light transport tube 200 to change the sunlight into a linear light beam generally balanced with respect to the central axis of the light transport tube. It consists of a direct light conversion unit 300 to proceed.

The condensing means 100 functions to focus solar light incident at a low density in a large area into a narrow area and to incident light of higher density into the light transport tube 200 which will be described later. A large spherical reflecting mirror made of concave mirrors to focus on, a large convex lens focused through refraction, or a combination thereof may be used.

The solar light that is collected through the light collecting means 100 and proceeds to the inside of the light transport pipe 200 is incident on the inner wall surface of the light transport pipe 200 at various incidence angles. The direct light conversion unit 300 is provided at 200 to change the traveling direction of the sunlight traveling at various angles of incidence into a linear light generally balanced with respect to the central axis of the light transport tube, thereby allowing the sunlight to travel through the light transport tube 200. There is a technical feature to configure the incident to a large angle of incidence even if it proceeds or contacts without contacting the inner wall surface of the.

Since sunlight has a property of going straight except when it is absorbed or scattered in dust or foreign matter present in the air, if the sunlight is implemented to be balanced in the light transport pipe 200, all the sunlight is lost in energy. Almost without this, it can be transferred to another point.

According to this principle, an embodiment of the linear light conversion unit 300 employed in the present invention is illustrated in FIGS. 2A and 2B.

Referring to the drawings, the linear light conversion unit 300 according to an embodiment of the present invention includes a convex lens 310 and a meniscus lens provided behind the convex lens 310. .

As is well known, a meniscus lens is a convex lens, in which one of two surfaces of the lens is concave and the other is convex, which is also called a convex concave lens. ) And the meniscus convex lens 322.

FIG. 2A illustrates a meniscus concave lens 321 disposed behind the convex lens 310, wherein the meniscus concave lens 321 is a focal point F of the convex lens 310. Positioning in front of the position is preferred. The convex lens 310 converges the sunlight concentrated at a high density by the condensing means 100 back to the focal point F of the convex lens 310, and the meniscus concave lens 321 is The converging sunlight in front of the focal point F is first refracted and dispersed at the entrance face and secondly refracted so as to be substantially balanced with the central axis of the light transport tube at the exit face.

FIG. 2B shows a meniscus convex lens 322 at the rear of the convex lens 310, wherein the meniscus convex lens 322 is the focal point F of the convex lens 310. It is preferable to position behind the position. The meniscus convex lens 322 is configured to converge the first ray of light scattered beyond the focal point F behind the focal point F at the entrance face and generally equilibrate to the central axis of the light transport tube at the exit face. Will be refracted.

Since the angle of refraction of the light in the convex lens or the concave lens depends on the curvature of the lens, the meniscus concave lens having an appropriate curvature rate according to the propagation angle of sunlight converging through the convex lens 310. By selecting and employing 321 or the Meniscus convex lens 322, sunlight can be changed into linear light that is generally balanced with the central axis of the light transport tube.

3 illustrates the linear light conversion unit 300 according to another embodiment of the present invention, wherein the linear light conversion unit 300 includes a convex lens 330 and a curved surface reflection unit 340 curved with a predetermined radius of curvature. do.

The convex lens 330 converges the sunlight collected by the focal point F of the convex lens 330 in the same way as the convex lens 310 according to the above-described embodiment, and the curved reflector 340 Is reflected by the sunlight scattered past the focal point F.

The curved reflector 340 should be manufactured with an appropriate curvature radius so that all the sunlight reflected by the curved reflector 340 becomes a substantially linear straight light beam with respect to the central axis of the light transport tube.

The light transport pipe 200 is a pipe for transporting the sunlight through the direct light conversion unit 300 in a balanced manner to the required point, Figure 4a shows a cross-sectional view of the light transport pipe 200, 4b shows the AA section of FIG. 4a.

Referring to the drawings, the light transport tube 200 is a hollow transparent tube 210, the inner reflection layer 220 is formed on the inner circumferential surface of the transparent tube 210 reflects the incident sunlight, and Consists of a protective tube 230 surrounding the outside of the transparent tube 210, the outer reflection layer 240 may be further formed on the outer peripheral surface of the transparent tube 210.

In the above-described direct light conversion unit 300, the sunlight is generally changed into a linear light beam parallel to the central axis of the light transport tube and transmitted inside the light transport tube 200, but the curvature or curvature of the direct light conversion unit 300 is reduced. Due to the error of the radius, all the sunlight may not be completely balanced linear rays, and some of the sunlight (a in FIG. 4A) may be inclined at a predetermined angle with respect to the central axis of the light transport tube, There is no choice but to enter the inner wall.

Therefore, the inner reflection layer 220 formed by coating a reflective material on the inner circumferential surface of the transparent tube 210 is inclined at a predetermined angle to reflect the incident sunlight (a) into the inside of the transparent tube 210 and is not lost to the outside. Function to prevent

The transparent tube 210 is a transparent tube that transmits almost without absorbing sunlight, and preferably uses a glass pipe, and other plastic pipes or transparent hoses may be used.

The transparent tube 210 is preferably such that even if some of the sunlight is not reflected due to the coating defect of the internal reflection layer 220 to transmit it without absorbing it so that safety problems due to heat accumulation do not occur.

The outer reflection layer 240 is formed by coating a reflective material on the outer circumferential surface of the transparent tube 210, which is not reflected by the sunlight due to coating defects of the inner reflection layer 220, as described above, the transparent tube 210 In the case of passing through), it is reflected back so that the transmitted sunlight (b of FIG. 4A) is not lost.

As described above, the solar light b reflected by the outer reflection layer 240 is reflected back by the inner reflection layer 220, so that the wall surface of the transparent tube 210 positioned between the inner reflection layer 220 and the outer reflection layer 240 is formed. Follow along.

The protective tube 230 is for protecting the transparent tube 210 against external impact, etc. It is preferable that the protective tube 230 is made of silicon, urethane, PVC and the like with good shock absorption while being heat resistant.

In addition, the light transport pipe 200 may prevent the scattering to make the interior of the vacuum state so that the sunlight can go more effectively, for this purpose, a vent (Vent) at a predetermined point of the light transport pipe 200 It is preferable to form and connect to an external vacuum pump or the like.

In the solar transmission device having the above-described configuration, when the collected solar light is transmitted to a long distance, it is necessary to interconnect the plurality of light transport pipes 200, and in some cases, the paths of the pipes must be changed. The light transport pipe 200 also needs to be connected at different angles.

5 is a view showing the light pipe 200 is interconnected and the curved pipe line 250 is formed to be connected at different angles.

As described above, some of the sunlight (a) proceeding inside the light transport pipe 200 is reflected off the straight path, so there is no risk of energy loss during the reflection process.

Therefore, in order to reduce the energy loss and improve the transmission efficiency of solar light, when the plurality of light transport pipes 200 are interconnected, the direct light conversion unit 300 is again provided at the connection portion, and the solar light is returned to the central axis of the light transport pipe. It is changed into a straight line light.

Here, the convex lenses 310 and 330 of the linear light conversion unit 300 provided at the connection part are installed with a slightly larger diameter than the outer diameter of the light transport tube 200, and the transparent tube as described above as well as the sunlight transmitted therein ( It is also desirable to converge the sunlight b transmitted along the wall of 210.

In addition, when connecting the light transport pipe 200 at different angles, the curved pipe line 250 is connected to each other, and the reflector 260 is installed to be inclined at a predetermined angle inside the curved pipe line 250. Sunlight incident from the front light pipe is reflected toward the rear light pipe connected at different angles to change the direction of sunlight.

In reality, even a well-made reflective mirror is known to have a reflectance of about 95% and absorb the remaining 5%. Therefore, when the sunlight is continuously incident and reflected on the reflector 260, the reflector 260 may be overheated, so that the reflector 260 is provided with cooling means (not shown) to prevent this. It would be desirable.

Referring to the operation of transmitting the light according to the present invention made of the configuration as described above is as follows.

Sun light incident from the sun is collected by the light collecting means 100 and converged to the light transport pipe 200.

Sunlight converged to the light transport pipe 200 is changed in the path of the direct light conversion unit 300 provided in the light transport pipe 200, first converging to the focus in the convex lens (310,330), menis Through the refraction in the lens (321, 322) or the reflection in the curved reflector 340, the path is changed to a straight light line generally balanced to the central axis of the light transport tube (200).

The linear light beam parallel to the central axis of the light transport tube 200 is straight in the light transport tube 200 without being in contact with the wall surface of the light transport tube 200 by its straightness.

In addition, some solar light that is inclined at a predetermined angle with the central axis of the light transport pipe 200 is incident on the internal reflection layer 220 of the light transport pipe 200 at a large incident angle and totally reflected.

The totally reflected solar light as described above is continuously reflected in the zig-zag from the inner reflection layer 220 to proceed along the interior of the light transport pipe (200).

In addition, when there is sunlight that is not reflected by the coating defect of the inner reflection layer 220, the sunlight passes through the transparent tube 210 and then to the outer reflective layer 240 formed on the outer circumferential surface of the transparent tube 210 It is reflected again. Such sunlight travels along the wall surface of the transparent tube 210.

In addition, the direct light conversion unit 300 is provided at each connection portion of the light transport pipe 200 to direct sunlight, totally reflected sunlight, and all of the sunlight traveling along the wall surface of the transparent pipe 210. The path is changed again to equilibrate with the central axis of 200).

Therefore, in the process of transmitting the concentrated solar light by the light transport pipe 200, the solar light is lost to the outside of the light transport pipe 200 or energy loss such as sunlight is absorbed by the light transport pipe 200 itself. As it can transmit sunlight to the place where it is needed efficiently while minimizing, it is possible to utilize sunlight as an alternative energy source in various fields.

The solar transmission apparatus according to the present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various modifications and substitutions can be made without departing from the technical spirit of the present invention. It will be obvious to those of ordinary skill in the art.

As described above, the solar transmission apparatus according to the present invention has an effect of efficiently transmitting sunlight to a required place while minimizing energy loss.

Through this, eco-friendly and infinite solar energy can be used as alternative energy sources in various fields such as power generation, heating, and lighting, thereby reducing environmental pollution and securing economic feasibility.

Claims (7)

Condensing means for condensing incident sunlight; And a light transport pipe configured to totally reflect the sunlight collected through the light collecting means to a required point. The optical transmission pipe is a solar transmission apparatus, characterized in that provided with a direct light conversion unit for changing the traveling angle of the sunlight to proceed to a linear light generally balanced on the central axis of the optical transport pipe. The method of claim 1, The direct light conversion unit, A convex lens for refraction of incident sunlight and focusing; And a meniscus lens that refracts sunlight from behind the convex lens and proceeds as a linear light beam substantially balanced with a central axis of the light transport tube. The method of claim 1, The direct light conversion unit, A convex lens for refraction of incident sunlight and focusing; And a curved reflector for reflecting sunlight dispersed through a focal point of the convex lens and traveling in a linear light beam substantially balanced on a central axis of the light transport tube. The method of claim 1, The light transport pipe, A hollow transparent tube through which all sunlight is transmitted; An inner reflection layer formed on an inner circumferential surface of the transparent tube to reflect incident sunlight; And And a protective tube surrounding the outside of the transparent tube. The method of claim 4, wherein And an outer reflection layer for reflecting back the sunlight passing through the transparent tube to the inside without being reflected by the inner reflection layer, further formed on an outer circumferential surface of the transparent tube.  The method of claim 1, The solar transmitter, When one or more light transport pipes are connected to each other, the linear light conversion unit is provided in the connection portion. The method of claim 6, And a reflector for reflecting sunlight at the angle inside the curved pipe line when the light pipes are connected to each other at different angles through the curved pipe line.

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