JPS5919239Y2 - solar heat collector - Google Patents

Description

[Detailed explanation of the idea] This idea relates to a flat plate type solar heat collector.

Conventionally, this type of solar heat collector consists of a flat box-shaped case filled with appropriate heat insulating material, on which heat collecting pipes and heat collecting plates are placed, and a transparent lid plate is placed over the heat collecting material.

When this structure is installed and used, the natural convection of air in the space between the heat collecting plate and the cover plate increases the temperature difference between the upper part and the lower part, which ultimately reduces the heat collection efficiency in the lower part. Not only did this reduce the heat collection efficiency, but the heat was dissipated from above, reducing the heat collection efficiency as a whole.

Therefore, in order to increase heat collection efficiency by partitioning the space between the heat collecting plate and the lid plate, it has been proposed to interpose a honeycomb-shaped panel in this space, or to arrange hollow glass tubes in a dense manner. However, since all of these require a separate partitioning member, an increase in cost is unavoidable.

On the other hand, since most of the heat collecting plates of solar heat collectors are constructed in one piece, the material has edges. This had to be translated into prices, pushing up product prices.

Therefore, this idea replaced the conventionally integrated heat collecting plate with
The main idea is to arrange a large number of small heat collecting plates vertically and horizontally, and to provide an upright piece extending from the end of each small heat collecting plate to the cover plate, so that the heat collecting plate itself has a honeycomb structure. It can be said that it has the advantages of a honeycomb structure, so to speak, and also allows the material of the heat collecting plate to be used without wasting it.

The details will be explained below based on the illustrated embodiment.

Reference numeral 1 denotes a flat box-shaped case, which is covered with a lid plate 2 to keep it in a substantially sealed state.

A heat insulating material 3 is spread inside this case 1, a heat collecting pipe 4 is arranged, and a heat collecting plate 5 is placed so as to be in close contact with the heat collecting pipe 4.

The heat collecting pipe 4 is made of a metal pipe or a synthetic resin pipe such as a nylon pipe (nylon 11).

As shown in FIG. 2, the heat collecting plate 5 is formed by making a rectangular base plate 6, folding up the upright pieces 7 from the four sides to form a box shape, and forming a recess 8 in the base plate 6 into which the heat collecting tube 4 is fitted. Heat collection plate 10
are sequentially arranged vertically and horizontally in case 1.

The upright piece 7 is designed to abut against the cover plate 2.

In the illustrated example, a single recessed portion 8 is formed, but of course, a plurality of recessed portions 8 may be formed depending on the density of the heat collecting tubes 4.

FIG. 3 shows an example of a row of heat collecting small plates 10. When the heat collecting plates 10 are arranged in a box shape, the upright pieces 7 are in sliding contact with each other, forming a double layer. The upright pieces 7 are arranged upright from two opposing sides.

In this case, although not shown, if the four parts into which the heat collecting pipes 4 are fitted are formed in a criss-cross shape, the small heat collecting plates 1 of the same shape can be formed.
It can be set to 0.

If the surface of the substrate 6 of the small heat collecting plate 10 is made into a heat receiving surface with a black coating film, a selective absorption film, etc., and the upright piece 7 is made a reflective surface to guide sunlight to the heat receiving surface, the upright piece 7 can act as a light shield. In addition, by reflecting changes in the altitude of the sun onto the heat-receiving surface using the reflective surface, it also increases heat collection efficiency.

In particular, in the case of the small heat collecting plate 10 shown in Fig. 3, the height of the upright piece 7 is not changed, but the rising angle and shape are changed in various ways. It is also possible to reflect sunlight on the heat-receiving surface without being affected by changes in the altitude (direct angle of radiation to the heat collector).

In the solar heat collector constructed as described above, the partition wall in the case 1 is provided with the small heat collecting plates 10 constituting the heat collecting plate 5, so that the manufacturing process is simplified.

That is, not only is it possible to save the effort of interposing a separate partitioning member, but it is sufficient to arrange the small heat collecting plates 10 vertically and horizontally and cover them with the cover plate 2.

Since the heat collecting plate 5 is combined with the heat collecting small plates 10, edges are less likely to be formed in the material, and losses due to manufacturing errors are naturally reduced since each heat collecting plate is 10 units.

Furthermore, when maintaining and repairing the solar heat collector, there is an advantage that it is not necessary to replace the entire relatively large heat collecting plate as in the past, resulting in lower costs.

Furthermore, because this type of solar heat collector is called a standard type and the size is predetermined, it was sometimes difficult to meet the requests of the construction owner. If you prepare it, you can provide it in any size you want.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, with Figure 1 being a sectional view and Figure 2 being a sectional view.
The figure is a perspective view of the main part, and FIG. 3 is a perspective view of the main part of another embodiment. 1... Case, 2... Lid plate, 4...
... Heat collection pipe, 5 ... Heat collection plate.

Claims (1)

[Scope of utility model registration request] 1. In a solar heat collector, a heat collection tube that circulates a heat exchange medium is placed inside a case covered with a transparent lid plate, and a heat collection plate is placed in close contact with the heat collection tube. A solar heat collector characterized in that it is constructed by arranging plates vertically and horizontally, and that the heat collecting plate has a honeycomb structure by providing an upright piece extending from the end of the small heat collecting plate to the lid. 2. The solar heat collector according to claim 1, which is a registered utility model, characterized in that a recess into which a heat collection tube is fitted is formed in the bottom of the small heat collection plate. 3. The solar heat collector according to claim 1 or 2 of the utility model registration claim, characterized in that the small heat collecting plate is formed into a box shape by providing upright pieces on the four sides of a rectangular plate. . 4. The solar heat collector according to claim 1 or 2 of the utility model registration, characterized in that the heat collecting plate is a rectangular plate with upstanding pieces provided on two opposing sides. 5. Claim 1 of the utility model registration, which is characterized in that the upright pieces of the small heat collecting plate serve as reflective surfaces. The solar heat collector according to item 2, 3, or 4. 6. The solar heat collector according to claim 5, which is a utility model registration, characterized in that the heat collecting plate is made by combining small heat collecting plates with various rising angle shapes of the upright pieces.