JP2010101544A - Solar heat collection panel using hollow structure panel sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight and inexpensive solar heat collection panel easily installable in any place. <P>SOLUTION: A heat collection tube recovering heat is attached to a top part of a resin panel of a hollow structure with a cross-sectionally harmonica structure in a lateral direction. One end of the heat collection tube is blocked and a joint is provided on another end to compose the solar heat collection panel. The panels of the hollow structure can be plurally glued together, and heat collection efficiency can be improved by forming a planar sealed space by gluing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a solar heat collecting panel that recovers heat from sunlight in the form of warm air.

Conventionally, a basic heat collecting structure is that a metal peripheral heat panel having a large number of small holes provided on a heat insulating material and placed in a case with a translucent panel. Most of them adopted a metal plate such as a copper plate for the light receiving surface in consideration of heat conduction. In addition, there are some that do not use translucent panels, but the structure is complicated and has not yet spread.
Patent Publication 2008-116176 Patent application 2001-133380 Patent application 2002-373196

The purpose is to provide a solar thermal collector panel that can be easily installed anywhere and can be implemented by anyone with a light, inexpensive and simple work technique.

The present invention is a panel sheet having a hollow structure as shown in FIG. 1, a hollow resin panel having a hollow structure having a harmonica structure in the horizontal direction and a space of a rectangular column having a thin vertical section as the light receiving surface 2. As shown in FIG. 3, one of the transverse cut surfaces is incorporated into a prismatic heat collecting tube 1 to form a structure as shown in FIG. The cross sections are as shown by A-A 'and B-B' in FIG. One end of the heat collecting tube is closed, and the other end is led into the room through a duct tube or the like to suck the heat of the panel hollow portion with a fan. Heat recovery from the heat collecting tube can be performed from both ends. Of course, it goes without saying that the cross section of the hollow structure panel sheet without the heat collecting tube is open.

Also, even if there is no suction means, if the heat collecting tube is turned up and the cross section under the panel sheet is lowered without blocking, the air warmed on the light receiving surface expands and the specific gravity becomes lighter and rises. It is possible to guide and use in a specific direction within the height range.

If a transparent hollow resin panel is used as a light-receiving surface and a black hollow resin panel is installed below the light-receiving surface, light is converted into heat at the joint between the two panel sheets, and warms the air in the two vertical cavities.

By using a silicone caulking material or the like for the superposition of the hollow resin panels and joining them as shown in FIG. 4, it is possible to control the flow of airflow on the joining surfaces and select the temperature range for heat recovery. Further, a silicone caulking material can be applied to the upper and lower two joints in a grid pattern as shown in FIG. 7 to create a sealed space as shown in FIG. The heat capacity of such a planar sealed space can be reduced and a high temperature can be obtained.

If a material with a different expansion coefficient is used in the superposition, a strain interval is generated at the joint due to heat generated by light reception. Even in winter, when the sunlight is strong, the gap between the joint surfaces is expanded and a large amount of hot air is automatically supplied.

A solar cell is mounted on the heat collecting surface with a gap. The electric power here is sent to the fan 5 to be operated. By doing so, it plays a role of a switch that blows heat when sunlight is emitted, and stops blowing when it is cloudy or at night.

Combining a light and inexpensive hollow panel sheet used in logistics as a Pradan and a square longitudinal die can provide a very inexpensive and lightweight solar heat collection.

By covering the hollow panel made of Pradan with a translucent panel sheet made of polycarbonate, the heat collecting efficiency can be greatly improved, and the aging degradation and deformation of the Pradan that is not light resistant can be suppressed.

The strength is increased by stacking two or more polycarbonate hollow panel sheets, and a solar heat collecting panel that also serves as a roofing material or a wall material can be obtained. In addition, by stacking so as to form a hermetic compartment with a silicone caulking material or the like that can increase the thickness of the upper and lower two joints, solar heat can be stored as internal energy without being used for volume expansion.

In the preceding paragraph, as an effect of overlapping a platen (made of polyethylene) having a large thermal expansion coefficient with a polycarbonate hollow panel sheet that is hard and has a low thermal expansion coefficient, a thermal expansion differential strain of the joining surface interval due to the amount of incident light occurs. In other words, when the light is weak, the interval is narrow and warms a little air slowly, while when the sunlight is strong, it sends a lot of hot air.
A sheet-like solar panel is stretched on the light receiving surface of the front, and the blower fan 5 incorporated in the heat collecting tube as shown in FIG. 5 can be directly driven. Since the amount of heat collection is almost proportional to sunlight, it also serves as an automatic adjustment device for the amount of air flow.

The present invention relates to a solar heat collecting panel.

As shown in FIG. 1, the cross section of AA ′ is called a Pradan with a harmonica structure, and one end of a space forming a long rectangular prism made of plastic corrugated cardboard (black) has a rectangular shape as shown in cross section BB ′. Attach so that it fits inside 1. Attach a joint pipe for collecting hot air to one end (or both ends) of the square heat collecting tube. The junction between the square tube and the hollow panel sheet is sealed with an adhesive or a silicone caulking material. A fan that sucks in warm air from the heat collection panel, which is fixed to the outer wall of the building with such a solar heat collection panel rectangular heat collection tube facing up, and an elbow pipe that guides the warm air indoors is connected to the end of the joint pipe tube Attach to any place after the joint pipe. When sunlight hits a solar heat collecting panel with such a simple structure, the air inside the panel is warmed, and the lightened air rises and at the same time is guided indoors by suction. Further, even if there is no suction means, the air in the light-receiving surface which has been thermally expanded and lightened can be guided to the target space through the heat collecting tube if it is above the panel. In this case, however, it goes without saying that the upper and lower positional relationship between the light receiving surface and the high temperature gas guide destination is to be considered.

By superimposing a plurality of the pladan or polycarbonate panels, heat recovery efficiency is improved without heat escaping from the back side.

A silicone material is applied to the surface side of the pladan as shown in the figure, and a transparent panel made of polycarbonate is laminated thereon. As a result, the air layer becomes three layers including the joint portion of the two panels. By providing a sealed thin air layer on the joint surface, the temperature of this portion can be extremely increased, and a role as a heat supply surface space can be provided. In addition, such a sealed space can be made by plugging a caulking material or the like in the upper and lower harmonica structures of the cross section.

By applying a silicone material as shown in FIG. 4, the length of the air flow path can be adjusted to control the light reception time, that is, the temperature range to be collected.

A solar cell (sheet-like) is stretched on the upper surface of the heat collecting panel, and the blower fan connected to the heat collecting tube can be driven by the power here. In this case, the output of the fan automatically changes depending on the intensity of solar radiation, and acts as a switch that automatically stops the blowing of heat after rain or cloudy weather or sunset.

As shown in FIG. 6, by covering the suction side cross section with the nonwoven fabric 6, it is possible to prevent dust, dust, and the like from entering the heat collecting panel hollow portion.

In addition, the nonwoven fabric can be provided with a humidifying function so that it becomes a dry countermeasure in winter.

The overall heat collection efficiency can be increased by sandwiching the metal plate 12 coated in a color that easily absorbs light in the planar sealed space of FIG. 7 as a high-temperature heat source.

The front and back surfaces are formed by sandwiching a metal plate coated with black on the front and back sides in a surface sealed space formed by bonding two transparent hollow structure panel sheets together in claim 7 and using the hollow structure panel sheet having high translucency. A solar heat collecting panel that can supply heat from sunlight from both sides can be configured.

By placing the panels in the previous section so that each side faces east and west (with the cross section facing south), it is possible to obtain morning and evening solar heat that has not been collected with a single solar thermal collector panel. .

As the simplest structure for carrying out the present invention, as shown in FIG. 9, a hollow panel, which is a light receiving surface, is cut out so that one side of the square vertical doi is shorter than the corner portion to the thickness of the panel. A panel sheet having a hollow structure, which is a light receiving surface, is inserted in between, and sandwiched between the condensing surface supporting flat plate 13 and the condensing surface supporting elbow angle 14 from above and below, and fixed by adhesion or the like. At this time, a part of the condensing surface support plate is joined to the bottom of the square Doi tube, and the vertical surface of the light receiving surface support elbow angle is joined to the right vertical surface of the square Doi tube. It is necessary that the cross-section of the hollow structure panel sheet whose cross-section is the light receiving surface of the harmonica structure does not contact the left side surface in the drawing of the square doi. In this way, the joining of the heat collecting tube and the light receiving surface is completed. When it is exposed to sunlight with the heat collection tube facing up, the air in the hollow prismatic space is warmed and rises as the buoyancy is reduced, and is collected in the heat collection tube.

In order to efficiently send the warmed air collected in the heat collection tube, the rounded joint 15 is attached to one of the heat collection tubes (or both in some cases). (When recovering heat from only one of the heat collecting tubes, it is necessary to close the opposite end.) In actual production, it is necessary to lengthen the square doi serving as the heat collecting tube by the nominal diameter of the joint 15.

A solar heat collecting panel with such a basic structure can be led indoors by attaching a heat collecting pipe on the roof or wall with the heat collecting pipe facing up, and connecting a vent pipe using a round standing doi to the end of the joint 15. Needless to say, the heating effect is improved by providing the air blowing means at an appropriate position after the joint.

It is a plastic panel (plastic corrugated cardboard) and a polycarbonate hollow panel (trade name: Twin Carbo, etc.) which are hollow panel sheets used in the present invention, but these commercially available products are said to be sub-plates of 180 cm in length and 60 cm in width. A heat collecting tube can be attached to both harmonica cross sections, one of them can be connected indoors, air can be sucked and sent to the light receiving surface, and the heated air can be returned to the indoors again through the heat collecting tube of the opposite cross section. .

The present invention can be used not only as a heating means using solar heat in general homes and other buildings but also as an inexpensive heat supply means in the agricultural and industrial fields.

Structural conceptual diagram of a hollow panel sheet used in solar thermal collector panels Conceptual diagram showing the basic structure of a solar thermal collector panel Vertical and horizontal cross-sectional view of solar heat collection panel Conceptual diagram showing an application example of the adhesive material when joining the hollow panels Conceptual diagram of the present invention showing a situation in which a solar cell and a hot air suction fan are incorporated Conceptual diagram showing the installation status of the nonwoven fabric filter that prevents the suction of dust and debris Conceptual diagram of the area sealed space Sectional view of a planar sealed space composed of two upper and lower hollow panel sheets and an adhesive Exploded view showing the assembly method of the present invention

Explanation of symbols

1. 1. Heat collecting tube 2. Light receiving surface 3. Silicone adhesive bonding part 4. Solar cell Fan 6. Nonwoven filter 7. 7. A planar sealed space that has a grid shape. 8. Adhesive material 9. Hollow structure panel sheet on the upper surface 10. Hollow structure panel sheet on the bottom surface Sealed space 12. Metal plate 13. Condensing surface support flat plate 14. 14. L-shaped angle for condensing surface support Hot air drawer joint
A-A 'Harmonica structure cross section
B-B 'Longitudinal sectional view of the heat collection tube from a rectangular column hollow structure panel sheet

Claims (7)

In the cut surface of the panel sheet having a hollow structure as shown in FIG. 1, the direction in which the hollow column is formed with a narrow hollow column is defined as the vertical direction, the direction in which the cut surface is in the harmonica direction is defined as the horizontal direction, and the harmonica-shaped cut surface. One of these is stored in a prismatic tube (which may be a cylinder), and the airflow in the panel sheet warmed by light reception is collected in the heat collecting tube of the prismatic structure, and is passed through the joint tube from both ends or one end of the heat collecting tube. Solar heat collecting panel characterized by heat recovery. A solar heat collecting panel, wherein a plurality of the panel sheets having a hollow structure are overlapped. 4. Laminating a solar heat collecting panel characterized in that a thick silicone material or the like that can secure a planar space in the superposition of claim 2 is applied as shown in FIG. Method. The solar heat collecting apparatus according to claim 3, wherein two types of hollow structure panel sheets having different thermal expansion coefficients are overlapped to reflect the difference in thermal expansion due to temperature in the form of a gap between the upper and lower panel sheets. panel. 5. The solar heat collection panel according to claim 2, wherein the front panel sheet uses a highly light-transmitting material and the lower panel sheet uses a low light-transmitting material. A solar cell-integrated solar heat collecting panel, wherein a solar cell 4 is provided on the light-receiving surface 2 of the solar heat collecting panel of each of the above items, and a fan 5 incorporated in the heat collecting tube is driven. The solar heat collecting panel according to claim 3, wherein in the superposition of the sheet panels according to claim 3, a planar space sealed on the surface is formed for pasting.

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