JPS6028925Y2 - solar heat collector - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the improvement of solar heat collectors.

The upper case of conventional solar heat collectors is shaped like a single flat plate, so the heat that has been collected through the upper case is easily dissipated through the upper case. There were drawbacks such as the need to increase the thickness.

The present invention has been devised to eliminate the above-mentioned drawbacks, and details thereof will be explained below based on embodiments shown in the drawings.

In Figures 1 to 4, A is a solar heat collector, which consists of a U-shaped upper case 1 that receives sunlight, and a U-shaped fitting part that connects the lower end 1a of the upper case 1. A lower case 3 is inserted and fitted airtightly into the lower case 2, and a lower case 3 is airtightly connected to the outside of both the left and right ends of both cases so as to close both the left and right ends of the heat collecting chamber B surrounded by the two cases 1 and 3. It is separated from the side cover 4aw4b and the heat medium circulation heat exchanger C installed in the heat collecting chamber B.

The heat exchanger C is composed of a heat absorbing tube 5 and a heat collecting plate 6 fixed to the upper surface of the heat absorbing tube 5.

The upper case 1 also includes an outer plate 7 and an inner plate 8 made of transparent plastic, and a plurality of partition pieces 10 that partition a heat-insulating gap 9 formed between the two plates 7 and 8, as shown in FIG. It consists of

Furthermore, in this embodiment, the upper case 1 is formed by extrusion molding of acrylic, polyester, or polycarbonate resin, so that the thickness T of the void 9 is 6 to 9 mm as shown in FIG.
As shown in Figure 2, a double-structured sheet with a cross-sectional shape of 0.7 to 2TIr11t is formed, and its front and rear parts are bent at right angles by thermoforming, making the whole sheet U-shaped to increase its strength. The size is about 50C71 x 200C71 and the light receiving area is about 1ta''.

In addition, in Fig. 2, a#500mm, b#60~70mm
, c=20~307Ir! There are n.

Further, the lower case 3 is made of a corrosion-resistant metal plate which has been subjected to a rust-proofing treatment, and the ends thereof are bent inward to form a U-shaped fitting portion 2.

Note that the fitting portions of the upper cases 1 and 3 are bonded with adhesive E as shown in FIG.

The lower case 3 may be made of weather-resistant and heat-resistant plastic such as colored non-transparent FRP or high-density polyethylene resin, or may be made of colored steel plate, vinyl chloride steel plate, or painted steel plate.

When the lower case 3 is made of ABS, polypropylene, polyethylene, etc., the U-shaped fitting portion 2 can be formed by integral molding, as shown in FIG.

Additionally, a UV-blocking film may be applied to the surface of the upper case to improve weather resistance.

Reference numeral 11 in the figure is a heat insulating material made of glass fiber foamed polystyrene resin, etc. Since the temperature of the heat collecting plate 6 may rise to a high temperature of about 200°C, the lower case 3 is insulated.
It may be omitted if the temperature is only raised by about ℃.

5a is an inlet portion of a meandering copper heat absorption pipe 5 for circulating a heat medium;
Reference numeral 5b also represents an outlet portion, which protrudes to the outside of the upper and lower cases 1, 3 and the side lids 4a, 4b.

Further, the heat collecting plate 6 is subjected to a selective absorption coating treatment.

Furthermore, the side covers 4a, 4b are suitably made of rubber or plastic.

In the solar heat collector having the above structure, sunlight incident on the upper case 1 passes through the transparent plastic outer plate 7, the insulation gap 9, the inner plate 8, and the inside of the heat collecting chamber B, and then passes through the heat collecting plate 6. Heat.

The heat is then absorbed by the heat medium inside the tube through the tube wall of the heat absorption tube 5, and the absorbed heat medium is sent to, for example, a heat storage tank from the tube outlet portion 5b.

In addition, since the heat collecting chamber B is a closed space, the heat collecting plate 6 is approximately 20
The temperature may rise to around 0℃, but the heat is similar to upper case 1.
It is insulated by the inner and outer plates 7, 9 and the insulation gap 9, and does not dissipate to the outside of the cane.

[Other Examples]

Figure 5 shows a U-shaped upper case 12 that is placed over the lower case 13.The upper case 12 has a medium-height side profile to further improve load capacity, wind pressure resistance, and deformation resistance within the optimum range of heat collection efficiency. It has increased.

In Figure 5, 1=500mjn~6O-1H=(7
0±10) Torso, moshie = 42Wl! Xf = 40m
When m, R=(50±10) wIL1g=5 to 2−, and the upper case 12 has a middle-height back surface, that is, a dome shape.

By forming this dimensional relationship, the upper case 1
2 has extremely good restoring force.

As is clear from the above explanation, in the present invention, the upper case of the solar heat collector has an outer panel and an inner panel made of transparent plastic, and partitions a heat insulating gap formed between the outer panel and the inner panel. Since it is composed of multiple partition pieces, the heat inside the case is prevented from escaping to the outside of the case, especially by the insulation gaps, which has a good heat collection effect, and the upper case has a so-called honeycomb structure, so it is lightweight. Excellent effects such as being strong and not damaged can be expected.

In particular, since the upper case is formed in a U-shape, it is easy to seal against the intrusion of rainwater, and it has load resistance, wind pressure resistance, and deformation resistance, so it can withstand damage over a long period of time and has high heat collection efficiency. can be sustained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a sectional view, FIG. 3 is an enlarged sectional view of section D in FIG. 2, and FIGS. FIG. 7 is a cross-sectional view of another embodiment. 1: Upper case, 2: U-shaped fitting part, 3: Lower case, 4a
, 4b: side cover, B: heat collection chamber, C: heat exchanger, 5: heat absorption tube, 6: heat collection plate, 7: outer plate, 8: inner plate, 9: insulation gap,
10: Partition piece, 11: Heat insulation material.

Claims (1)

[Scope of utility model registration request] an upper case that receives sunlight; a lower case that is connected to the lower end of the upper case; and a lower case that is connected to both left and right ends of both cases to close both left and right ends of a heat collection chamber surrounded by the two cases. and a heat medium circulation heat exchanger installed in the heat collecting chamber, and the upper case includes an outer plate and an inner plate made of transparent plastic in a U-shape, and the outer plate. A solar heat collector characterized by comprising a plurality of partition pieces that partition a heat insulating gap formed between the inner plate and the inner plate.