JP4147334B2 - Teaching material for making solar heat collector, method of manufacturing heat collector and reflector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a teaching material for creating a solar heat collector, a method for manufacturing the heat collector, and a reflector for the purpose of manufacturing a solar heat collector from a reflector and a heat collector.
[0002]
[Prior art]
Conventionally, it is known that heat is generated by condensing sunlight, and a conical solar collector that can be disassembled and stored is also known.
[0003]
[Patent Document 1]
JP-A-4-332347
[Problems to be solved by the invention]
In the prior art, a strip sheet material is used, and both ends of the strip sheet material are joined together to form a conical container having an upper opening, and a mouth is covered with a transparent cover to form a greenhouse space. In addition, solar heat collecting methods such as spraying a heat collecting medium are shown.
[0005]
However, there is a problem that it is not suitable as a teaching material because it is not configured to experience molding by using an already known principle. In addition, the size and shape of the conical container is fixed, and it is not suitable as an experimental instrument, such as changing the cone angle according to the irradiation angle of sunlight or measuring the difference in thermal efficiency according to the reflected light beam angle. There was also a point.
[0006]
[Means for Solving the Problems]
However, according to the present invention, a concave reflector is formed by a ring-shaped reflecting plate cut out from the molded plate, and the overlapping portion of the ring-shaped reflecting plate is fixed, so that the length of the overlapping portion is appropriately selected. Te, succeeded in changing the reflection angle of the sunlight, by or forms a U-shaped reflector, when the angle of the sunlight small to be able to efficiently converged to (winter), the conventional It solved the problem as an implementation tool .
[0007]
Further, the reflecting plate, by printing line can cut, thereby facilitating the cutout may be formed to be expected a certain effect (keep shape accuracy).
[0008]
Moreover, since it becomes an assembly-type teaching material set, the principle can be confirmed practically, and the angle of the reflecting mirror and the heat collection degree of the sunlight can be visually detected.
[0009]
That is, on one surface of a rectangular base plate having at least one surface mirror- finished, the cut lines 3 and 3a of the ring-shaped reflecting plate for forming the concave reflecting mirror, the cut line 3b serving as the inner periphery of the ring-shaped reflecting plate, and the cut line 3, 3a to the outer side of the large and small discs 9 and 10 serving as the central plate of the concave reflecting mirrors, the cut lines 4, 5 of the large and small discs, or the folding lines 34, 35, 36 for forming the U-shaped reflecting mirror, and the support of the U-shaped reflecting mirror Forming a reflecting mirror on which one or both of cut lines 28, 28a, 32, 32a, 33, 33a and cut lines 29, 29a, 31, 31a are refracted and the insert pieces are cut off. a plate, a heat sink to be set to the center of the front Symbol molded plate or RaNaru form the reflector, the heat collection device creation sunlight, characterized in that a combination of transparent covering preparative be sealed over the absorbing heat bodies Ru materials der of use.
[0010]
In another invention, the cut-off lines 3 and 3a of the ring-shaped reflecting plate, the cut-off line 3b that becomes the inner periphery of the ring-shaped reflecting plate, and the cut-out line 3 a heat sink to set the molding plate a switching up lines 4, 5 for cutting the magnitude disc 9 were printed that Do and the center plate, the center of the concave reflector molded from previous SL shaped plates on the outside, A teaching material for creating a solar heat collecting tool, which is combined with a transparent cover that covers the heat absorbing body and seals it.
[0011]
Next, co-like reflector formed by bending along a rectangular reflector longitudinal edge, the base portion forming plate, characterized in that formed by bending to the side for closing the base of the pre-Kiko shaped reflector is there.
[0012]
In addition, the invention of the method cuts the ring-shaped reflecting plate for producing a concave reflecting mirror cut out along the cut line 3 from the molded plate in a diametrical manner along the cut line 3a from the center toward the periphery, and A cut with a predetermined width is formed on the inner peripheral edge of the ring-shaped reflector, and the cut edges cut by the cut line 3a are overlapped to form a frustoconical concave reflecting mirror, and the overlapping portion of the cut edges is fixed. and, wherein the concave reflection mirror to the center, said central plate consisting of large and small respectively two discs 9, 10 pulled off from the molding plate is fixed, the heat sink is fixed to the central plate, and then the endothermic Ru fabrication method der heat collecting device using the materials for the heat collecting device creating a sunlight characterized in that the outer peripheral portion of the body covering the covering transparent.
[0013]
Next, according to another invention, the disk is fixed by sandwiching and fixing a space plate having a small diameter between the two disks 9 and 10, each of which is large and small, and into the peripheral gap between the two disks. The central reflecting edge of the concave reflecting mirror is bent inward to be inserted and fixed .
[0014]
Next, cut-off lines 3 and 3a of the ring-shaped reflector are provided on the surface of the reflector formed by layering the aluminum foil on the surface of the rectangular base plate , and a margin outside the cut-off line 3 of the ring-shaped reflector. A reflector for teaching material for creating a solar heat collecting tool , characterized in that the cut lines 4 and 5 of two discs 9 and 10 for the central plate are printed .
[0015]
Furthermore, another invention is a cutting line 28, 28a for forming a supporting piece and an insertion piece of a U-shaped reflecting mirror on the lower surface of a reflecting plate formed by layering an aluminum foil on the surface of a rectangular base plate . 32, 32a, 33, 33a, cut lines 29, 29a, 31, 31a and fold lines 34, 35, 36 for folding the U-shaped reflector into a U-shape are printed . This is a reflector for teaching materials for creating a heat collector.
[0016]
In the said invention, if the cone side wall angle corresponding to the overlapping angle of a ring-shaped reflecting plate is printed, the reflection angle can be adjusted according to the direction of sunlight.
[0017]
Further, since the ring-shaped reflector is cut out from the flat plate, the reflection area is known from the beginning, and the efficiency can also be calculated by measuring the temperature of the heat collector.
[0018]
The reflector of the present invention may be a conventionally used reflector obtained by laminating an aluminum foil on a base plate or laminating a film laminated with aluminum on a thin core plate.
[0019]
The reflecting plate of the present invention includes a summer / winter type in which summer and winter are combined, and a winter type only in winter, and a cut line (cut line) can be printed on each. In this case, there are a case where a summer-type reflector is printed on separate reflectors for summer and a winter-type reflector is printed for winter, and a case where both summer and winter are printed on the same reflector.
[0020]
When printing on the same reflector for both uses, it is not necessary to distinguish between summer and winter use at the time of sale. On the other hand, when printing is performed on separate reflecting plates, it is necessary to make two sets of reflecting plates for summer and winter, but this may be appropriately adopted for practical use. It is possible to print assembly instructions for the teaching material on the back surface of the reflector.
[0021]
When using the teaching material in this invention and putting it into practical use as a heat collection experiment or cooker, the temperature will be considerably high (for example, 60 ° C. to 90 ° C.) in 30 minutes or 1 hour, which is sufficient for experiments or practical use. There is no need to consider a device (for angle change) that follows the movement of the sun.
[0022]
For example, when used as a cooker, the angle may be corrected according to the movement of the sun each time it is used.
[0023]
However, when making hot water using solar heat or using it for continuous heating, if you make a simple clock device (change the angle with a gear), you can also use it as a teaching material.
[0024]
Since the above-mentioned device is a kind of solar tracking device, there are various materials ranging from teaching materials for understanding the principle to materials having accuracy that is compatible with practical use.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is characterized in that a concave reflecting mirror is formed by a ring-shaped reflecting plate cut out from the reflecting plate, a heat absorbing body is installed at the center of the concave reflecting mirror, and the heat absorbing body is sealed with a transparent cover. This is a method of manufacturing a solar heat collector.
[0026]
Further, another aspect of the present invention, also ring-shaped reflecting plate to form a concave reflector and co-like reflector, an endothermic material and, heat collecting materials of sunlight that combines transparent covering preparative sealing the heat sink .
[0027]
Next, another invention prints the cut lines 3 and 3a of the ring-shaped reflecting plate on one side of one surface of the reflecting plate formed by layering aluminum foil on the surface of the rectangular base plate. Printed on the outer sides of the cut lines 4 and 5 of the two discs 9 and 10, respectively, and crease lines 34, 35 and 36 for forming a U-shape of the U-shaped reflector on the printed surface, For making solar heat collector characterized by printing cut lines 28, 28a, 32, 32a, 33, 33a and cut lines 29, 29a, 31, 31a for forming support pieces and insert pieces This is a reflector for teaching materials.
[0028]
The present invention is a teaching material for a heat collecting tool that can be easily assembled even by a beginner and can collect heat with a simple instrument using sunlight. This does not prevent you from making a simple heat collector using this teaching material.
[0029]
The purpose of this teaching material is to let the user experience that heat can be generated from sunlight by assembling, but this does not preclude the use of this as a cooking utensil.
[0030]
According to the present invention, the angle of the concave reflecting mirror can be changed by adjusting the amount of overlap of the ring-shaped reflecting plates, and an appropriate reflection angle can be maintained corresponding to the incident angle of the sunlight. Also , the angle of the reflecting surface can be adjusted for the U- shaped reflecting mirror.
[0031]
Although the above mainly described the reflector for summer, the angle between the sun and the ground surface is small in winter, and therefore, the U- shaped reflector may be more efficient than the parabolic concave reflector.
[0032]
Although it is divided into the summer season (April to October) and the winter season (November to March) for the sake of convenience, it is a problem of efficiency, and the parabolic method (concave reflector) can be used as a teaching material.
[0033]
However, when considering household cookers (or outdoor cookers), it is more efficient by changing the size, dimensions, shape, etc., and there are dimensions, shapes, and structures that can withstand practical use. Or design appropriately according to the generated heat.
[0034]
[Example 1]
An embodiment of the reflector of the present invention will be described with reference to FIG. While particle course the aluminum foil 2 having the same shape on both sides of the rectangular base plate 1, the aluminum foil 2, and Cropping or line 3,3a of the ring-shaped reflecting plate, Ri cut the inner periphery of the ring-shaped reflecting plate print the score lines 3c line 3b, and by printing a Cropping or lines 4,5 of the magnitude disc constitutes a reflector 6 for solar heat collecting materials.
[0035]
The reflective plate 6 is provided with crease lines 7 and 7 at equal intervals, and the whole is formed into a long and narrow rectangular folding plate 8 so as to be convenient for packaging and carrying.
[0036]
The reflection plate 6, Cropping or wire 3, 3a, 3b, 3c, by cutting along a 4,5, can be easily obtained a material of the concave reflecting mirror.
[0037]
[Example 2]
An embodiment of the solar heat collecting teaching material of the present invention will be described with reference to FIG.
[0038]
The ring-shaped reflecting plate 14 cut out from the reflecting plate 6 described in the first embodiment, the reinforcing plates 11 of the large and small discs 9 and 10, the space plate 21, and the heat absorbing body 12 made of a metal can whose surface is black. And a transparent bag 13 for hermetically covering the endothermic body 12 to constitute a heat collecting teaching material 15 of the present invention.
[0039]
In the said Example, in order to give a demonstration to a user, although the reflecting plate 6 was combined, it replaced with the reflecting plate 6, and the ring-shaped reflecting plate 14, the small and large discs 9, 10, the reinforcement board 11, The heat absorber 12 can be accommodated in the transparent bag 13 to form the heat collecting teaching material 15.
[0040]
In the latter case, there are few opportunities to use a bag, and if an adhesive tape is added, it can be easily assembled outdoors.
[0041]
In order to assemble the heat collecting teaching material 15 and receive sunlight, it can be placed on a table or fixed to a wall (FIG. 4), but a dedicated support 20 for installation on the ground can also be used ( FIG. 3).
[0042]
For example, as shown in FIG. 3, the arm 27 of the support plate 17 that can be freely angled is attached to the upper end portion of the support rod 16 made of a synthetic resin that has a sharp lower portion, and the bolt 18 and the wing nut 19. Fix it. The heat collecting device 25 is configured by fixing the large circular plate 9 to the support plate 17 with an adhesive tape.
[0043]
In order to fix the heat collector 25 to the wall 29 or the like, the arm 30 of the support plate 17 of the heat collector 25 is fixed to the mounting plate 31 with a bolt 32 and a wing nut 33. In the figure, reference numeral 34 denotes a fixing nail for fixing the mounting plate 31 to the wall 29 (FIG. 4).
[0044]
[Example 3]
An embodiment of the manufacturing method of the heat collecting tool of the present invention will be described with reference to FIG.
[0045]
A reflector 6 of the heat collector materials 15, Cropping or wire 3, 3a, 3b, together with the cut along the 4,5, putting cutting saw line 3c, by forming a ring-shaped reflecting plate 14, then the circle of magnitude Reinforcing plates 11 and 10 are attached to the back surfaces of the plates 9, 10, respectively, and a space plate 21 is interposed and fixed between the reinforcing plates 11 (for example, adhesive fixing) to form the central plate 22 of the concave reflecting mirror 23, An inner edge cut portion of the ring-shaped reflecting plate 14 is inserted into the peripheral groove (the outer edge of the space plate 21) of the center plate 22, and the concave reflecting mirror 23 is configured by the ring-shaped reflecting plate 14. After determining the angle of the reflecting mirror by determining the overlapping degree of both edge parts 14a, 14b, the overlapping part is fixed with an adhesive tape 24 (may be temporarily attached with clothespins, gem pins, etc.) by installing the heat sink 12 to the central portion, the heat collection device of the invention 25 To complete.
[0046]
By installing toward the heat collecting member 25 to the sun, sunlight is projected as indicated by an arrow 26, so is reflected to focus on the heat absorbing body 12, heat absorber 12 to raise the temperature.
[0047]
In the above, the angle of the concave reflecting mirror can be determined by the size of the overlap between the two edge portions (14c is an overlapping line).
[0048]
[Example 4]
An embodiment of the present invention will be described with reference to FIGS.
[0049]
Cut reflector 2 7 Cropping or lines 28,28a of collector materials 30, 32, 32a, the 33, 33a, cut score line 29, 29a, 31, 31a, and fold the folding lines 34, 35, 36 If the insert pieces 37, 37a, 38a are cut out and the support pieces 44, 44 are digged, the U-shaped reflector 40 of the present invention can be obtained (FIG. 9).
[0050]
Therefore, if the heat-absorbing body 42 with the reflecting mirror plate 39 and the transparent bag 41 covered is installed, the heat collecting body 45 of the present invention is completed.
[0051]
In FIG. 9, when sunlight is projected as indicated by an arrow 43, it is reflected by each part of the reflector and is absorbed by the heat absorber 42.
[0052]
According to the result of the experiment, the temperature became 13.7 ° C. to 86.8 ° C. from 9:15 to 10:15 as shown in the graph of FIG. In the experiment, the temperature did not rise above 86.6 ° C., but it was found that it could also be used as a cooker.
[0053]
In the experimental example, the reflecting plate 27 of FIG. 7 is used, but the reflecting plate 46 of FIG. 8 can also be used. Since the reflecting plate 46 in FIG. 8 are printed the Cropping or lines of both Natsugata and winter type, that materials buyers suitably be used The use of any of the tear-off line in accordance with the season at the time of purchase It will be possible.
[0054]
[Experimental example]
When the heat absorbing tool molded using the teaching material of the present invention was used and condensed, the following results were obtained.
[0055]
When the concave mirror 23 with a surface area of 2000 cm ² and an angle (with respect to the horizontal plane) of 30 degrees is opposed to the sun (September 2, 2002, fine weather), an endothermic can (diameter 5 cm, height 12 cm, black painted aluminum The water temperature in the can (with 200 cc of water) reached 100 ° C. in 1 hour 30 minutes (FIG. 6).
[0056]
【The invention's effect】
According to the present invention, it can be easily and surely made as a teaching material from elementary school to junior high school, and there is an effect that heat collection from solar rays and calorific value measurement can be experienced regardless of the season.
[0057]
Although it is a teaching material, it also has a practical educational effect (for example, making boiled eggs), so it has a great educational effect.
[0058]
The material of the present invention is a common item and has an advantage that it can be provided at a relatively low cost.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a manufacturing process of a reflector according to the present invention.
FIG. 2 is also a plan view of a reflector and a diagram of members other than the reflector.
FIG. 3A is a front view showing the usage state of the support member.
(B) Similarly left side view.
(C) Right side view.
FIG. 4 is an explanatory view in which a part of the state in which the heat collector is similarly attached to the wall is broken.
FIG. 5 is an explanatory view showing the manufacturing process of the reflecting mirror,
(A) Flow chart at the time of molding.
(B) The enlarged front view of a center support plate.
FIG. 6 is a temperature rise graph when the concave reflecting mirror of the embodiment of the present invention is used.
FIG. 7 is an enlarged plan view of a reflector of another embodiment.
FIG. 8 is an enlarged plan view of a reflector that can be used in both the embodiments of FIGS. 2 and 7;
9 is an assembled perspective view of the embodiment shown in FIG.
FIG. 10 is a graph showing the temperature rise when using the U-shaped reflector of the embodiment of FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Square base board 2 Aluminum foil 3, 3a, 4, 5 Cut line 6 Reflector board 7 Folding line 8 Folding board 9, 10 Disc 11 Reinforcement board 12 Endothermic body 13 Transparent bag 14 Ring-shaped reflector 15 Teaching material 16 Supporting rod 17 Support plate 27 Reflector 40 U-shaped reflector 45 Heat collector

Claims (4)

A ring-shaped reflector for producing a concave reflector cut out from a molded plate is cut diametrically from the center toward the periphery, and the cut edges are overlapped to form a truncated conical concave reflector. For forming a concave reflecting mirror with at least one surface being mirror-finished, the cut-out lines 3 and 3a of the ring-shaped reflector, and the cut-out line 3b serving as the inner periphery of the ring-shaped reflector, A molded plate on which cut lines 4 and 5 for cutting out the large and small discs 9 and 10 serving as a central plate are formed on the outside of the cut line 3, and a heat absorbing body set on the center of the concave reflecting mirror formed from the molded plate. A teaching material for creating a solar heat collecting tool, which is combined with a transparent cover that covers the heat absorber and seals it. A ring-shaped reflecting plate for concave reflector creates unplugged switching along cut line from the molding plate, sincerely with diameter cleaves toward the periphery in, provided cuts in a predetermined width on the inner periphery of the ring-shaped reflecting plate The cutting edges that have been cut in a straight line are overlapped to form a frustoconical concave reflecting mirror, the overlapping portion of the cutting edges is fixed, and the center of the concave reflecting mirror is moved from the molding plate A center plate made up of two discs 9 and 10 each cut out is fixed, a heat absorber is fixed on the center plate, and then the outer periphery of the heat absorber is covered with a transparent cover. A method of manufacturing a heat collector using teaching materials for creating a solar heat collector. The disk is fixed by sandwiching and fixing a space plate 21 having a small diameter between the two disks 9 and 10, each of which is large and small, and the peripheral edge of the concave reflecting mirror into the peripheral gap between the two disks. The method for manufacturing a heat collecting tool using the solar heat collecting tool teaching material according to claim 2 , wherein the heat sink is bent and inserted inward and fixed. A ring-shaped reflector for producing a concave reflector cut out from a molded plate is cut diametrically from the center toward the periphery, and the cut edges are overlapped to form a truncated conical concave reflector. be those used to form, on the surface of the reflector formed by particle course the aluminum foil on the surface of the rectangular base plate 1, to print a cut line 3,3a of the ring-shaped reflecting plate 14, the ring A solar heat collecting tool characterized in that the cut lines 4 and 5 of the two discs 9 and 10 for the central plate are printed on the outer margin of the cut line 3 of the reflector 14 Reflector for teaching materials.

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