JPS597904A - Heat collecting concave mirror with variable curvature - Google Patents

Abstract

PURPOSE:To prevent a concave mirror for collecting the solar light from melting easily at ultrahigh temperature and to use it for various purposes by varying the curvature of the concave mirror optionally. CONSTITUTION:Liquid metal 17 with high specific gravity such as mercury is put in a heat-resisting container 16, which is rotated by a revolving shaft 18 to form a concave mirror of the liquid 17 in the container by centrifugal force. The curvature of the concave mirror varies with the revolving speed of the shaft 18. When the liquid metal 17 is a magnet holding body, the distance is varied by supplying electric power to a coil 19 to vary the curvature freely and in another way, the liquid may be rotated by exciting force. Even when the mercury is vaporized because of high temperature, the container rotates, so the concave mirror is formed in the vaporized state, which is convenient. When metal other hand the mercury is used, the metal is molten in the container 16 in a vacuum state and the container 16 is rotated at a high speed. The containier 16 itself feeds a refrigerant to a cooler 15 to carry on the operation. Thus, the curvature of the concave mirror is varied freely according to the purpose and use to adapt the concave mirror to the purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat collecting 1'lE double mirror which is effective in converting thermal energy obtained from solar heat into power generation equipment and other applications.

Many studies have been conducted on the use of solar energy, and small-scale storage batteries and the like using photoelectric conversion elements have been put into practical use.

However, from the perspective of saving oil resources, there is a need to use solar energy for large-capacity power generation, and many test power plants have been constructed and practical application is currently being promoted. As an example, a tower light condensing system as schematically shown in FIG. 1 is considered to be a promising method, and its power generation principle is as follows. That is, the boiler 2 is built into the top of the tower 1, and the rays of the sun S are reflected by a large number of curved surfaces &3,4,5.
．． 6... and 8.9... are used to condense light and maintain the boiler part 2 at a high temperature to perform continuous power generation.

By the way, the curved reflection d8Fi is made of solid material, and the curvature of its concave mirror is uniquely configured, and once constructed, it is impossible to convert it to an arbitrary curvature. However, in practical use, it is necessary to change the curvature of the concave mirror to convert the focal length to realize a highly accurate device, and there is also a need for a device that does not damage the mirror itself even when exposed to ultra-high temperature heat rays. The purpose is to provide a concave mirror device that can change the curvature of the concave mirror, does not melt due to high heat, and has an extremely high heat collecting effect.

For example, if the heat of the sun falling into a 10,000 m mirror is fermented and finally made into a 0.1- circular heat ray, then this 0,1
The trm's hot wire should be extremely high pitched. Therefore, as a means to generate solar heat from 10.0 (') On'' to a 0.1 m- circular heating ray, we made an extremely gentle concave mirror with a diameter of 10,000 at the initial stage, and in reality it was an assembly of plane mirrors ((4 pieces). X2.
5m) x (4 pieces x 2.5m) x 100=10
,000m'', arrange this assembly of plane mirrors so that they are 1 in 1, and then prepare 100 of them so that the heat reflected by the boundaries of these 100 overlaps and collects. If the building is constructed at a high temperature, the heat of the sun will be collected within the mirror surface of about 10W, creating a high temperature area.Next, in order to receive the heat in the high temperature area and further retain the heat, the high temperature area of the present invention will be used. Place a concave tm* that can withstand it and heat it with a weight μ so that the fish collection is 0.1 m.
can get high heat.

FIG. 2 is a longitudinal cross-sectional view of a heat collecting concave mirror showing an embodiment of the present invention. Inside the vacuum box main body 11, a heat-resistant container 16 fitted and supported within a cooler 15 is filled with, for example, 17 mercury or the like to constitute a reflecting mirror. 18
is a rotating shaft connected to the heat-resistant container 16, and is rotated at high speed by a power source (not shown). 19 is a coil, which is fixed to the rotating shaft 18 via a bearing 20 and is connected to the rotating shaft 18 through a bearing 20;
Electric power is supplied from a power source 23 connected to electrode brushes 21 and 22 that rotate together with the electrode brushes 21 and 22. Coil 19 (l″j liquid gold W
When 417 is 676 bodies, it is arranged to perform a curvature conversion operation.

In the above embodiment, the vacuum box main body 1 places the liquid metal 17 in a vacuum atmosphere to provide an anti-oxidation effect.

Although the present invention is based on the above configuration, an example of its operation will be explained below. First, when a liquid metal with a high specific gravity such as mercury is placed in a heat-resistant container, in the case of the present invention, if a rotational force is applied to the heat-resistant container by the rotating shaft 18, the liquid in the container will naturally flow due to centrifugal force. The curvature of the concave mirror changes depending on the number of rotations per rotation 18, but if the liquid metal is a magnetically responsive material, by supplying power to the coil 19 and changing the distance of the coil 19, The curvature can be changed freely.Alternatively, the liquid can be rotated by an excitation force.Also, even if the mercury is vaporized due to the high temperature, the container will rotate, so it will form a concave wall in the vaporized state, which is convenient. is good.

In an example using a metal other than mercury, a solid metal is placed in a heat-resistant container 16 that is pupiled in a vacuum, and irradiated with high-temperature heat rays, and the heat-resistant container 16 is rotated while the solid metal is being dissolved. . At this time, in order to prevent the heat-resistant container 16 itself from melting,
The operation continues by feeding refrigerant into the cooler 15. 15'
and 15'' are pipes for supplying and discharging refrigerant, and refrigerant gas or the like may be used depending on the purpose.The fluid metal that is in direct contact with the heat-resistant container 16 can be maintained at a relatively low temperature by the cooler 15. , and the closer it gets to the surface, the higher the temperature and a liquid layer is obtained.

FIG. 3 shows the focal length #1I81 of the concave mirror formed when the heat-resistant container 16 is rotated at a relatively low speed and the curvature is made small, and FIG. This shows the case where the concave mirror is made to have a curvature while applying magnetic force to the liquid metal 17 by supplying electric power.
The focal length S is smaller than the SI. Therefore, by controlling the rotation speed of the rotating shaft 18 and the power to the coil 19, the focal length of the concave Ifra as a curved reflecting mirror can be freely changed.

The structure and operation of the curved reflector applied to the heat collecting concave mirror device according to the present invention have been described in detail above. However, according to the present invention, the curvature of the concave [fid] can be arbitrarily changed depending on the purpose and use. This has the great effect that it can be freely adapted while changing the curvature.

Furthermore, it can be used for power generation by focusing heat rays such as solar heat and laser light, and there is no bath dissolution phenomenon of the liquid itself, which tends to occur at extremely high temperatures, so it can be applied to a wide variety of applications. It is particularly effective in utilizing solar heat.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing means of a tower condensing system using solar heat, FIG. 2 is a vertical cross-sectional view of the main parts of the four-sided heat collecting device according to the present invention, and FIGS. The figure is a partial sectional view showing a state in which the curvature of the concave ridge is changed. 11... Vacuum box body, 12... Cock, 13...
Glass plate 14...presser lid, 15...cooler, 16.
...Heat-resistant container, 17...Liquid metal, 18 Rotating shaft, 19
...Coil 20...Bearing, 21.22...Electrode brush, 23...Applicant for power supply license Makoto Kaguchi, attorney for attorney ± 1a No Michizo procedural amendment (0 p.m.) 1972 September / ♂ 11 1.1 Mr. Commissioner of the Japan Patent Office (Mr. Chief Adjudicator of the Japan Patent Office) ('L' + Office Bansei Palace) 1 Indication of matter f'l
1981 Patent S Section 116197 No. 2 Title of Invention
Concave mirror that can change the curvature 3 Relationship with the supplementary IF case Applicant address 16-9 Eba Honmachi, Naka-ku, Hiroshima City, Hiroshima Prefecture Name
Makoto Kaguchi (outside 8) 4 Agent 5 Showa year
116 Supplement 1 [σ Edge, 1 Paragraph In the description, column 7 for title of the invention, scope of claims, and detailed description of the invention Contents of amendmentill The scope of claims is amended as shown in the attached sheet. (2) In the specification, the name of the invention is corrected to "Concave mirror J whose curvature can be changed." (3. In the Detailed Description of the Invention column, in the 10th line from the top of page 3, the phrase "ultra-high sound" is corrected to "ultra-high temperature." 2. Scope of claims (1) A sky or atmosphere A reflector filled with a high-reflectivity, high-temperature-resistant HE liquid substance is installed in an oval-shaped container that maintains an atmosphere, and is equipped with a curvature conversion mechanism to arbitrarily set the curvature of the reflector. A concave mirror that can change the rate of rotation with %. (2) A concave mirror according to claim 11, which is provided with a rotating device for the reflecting mirror as a curvature converting mechanism. (3) A magnetic force generator is provided as a curvature converting mechanism. A concave mirror having variable curvature as claimed in claim (1).

Claims (3)

[Claims] (1) A round curvature conversion mechanism in which a reflector filled with a liquid material with high reflectivity and high temperature resistance is installed in a closed container that maintains a vacuum or atmospheric atmosphere, and the curvature of the reflector is arbitrarily set. A heat collecting concave mirror that can change the curvature. (2) The heat collecting concave mirror according to claim (1), which is provided with a high-speed rotation device for the reflecting mirror as a curvature conversion mechanism. (3) A heat-collecting concave surface whose curvature can be changed, as set forth in claim (1), which is provided with a magnetic force generator as a curvature converting mechanism.