JPS598736B2 - solar collector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a solar heat collector, and more specifically, a heat collecting plate portion that heats a heat medium passing through the interior with solar heat, and a frame surrounding the outer periphery of this heat collecting plate portion are integrally molded of synthetic resin. It concerns solar collectors.

As shown in FIG. 1, a conventional solar collector is assembled by housing a heat collecting plate 1 together with a heat insulating material 3 and a transparent cover 4 in a separately formed outer box 2. For example, wires are attached to the outer box 2. Since the outer box 2 is used by fixing it to a structure by attaching it to a fixed metal fitting, the heat collecting plate 1 may wobble inside the outer box 2, causing the heat collecting plate 1 to remain in place. There is a problem in that the load concentrates on the joint between the heat collecting plate 1 and the piping connected thereto, causing damage to this joint.

In order to solve this problem, the present invention adopts a structure in which the frame fixed to the structure and the heat collecting plate are integrally molded to prevent the heat collecting plate from shaking.

By the way, when the heat collecting plate is fixed in a fixed position, there is a risk that thermal stress will be applied to the heat collecting plate due to the influence of heat, causing distortion, warping, or cracking of the heat collecting plate, which is made of synthetic resin. In the present invention, by providing a notch at an appropriate position on the heat collecting plate, the notch absorbs the thermal stress acting on the heat collecting plate and prevents the heat collecting plate from being distorted or cracked.

Therefore, the main object of the present invention is to provide a solar heat collector that can fix the heat collecting plate part to a structure without rattling and can prevent damage to the joint between the heat collecting part and external piping. Another purpose is to absorb the thermal stress acting on the heat collecting plate even though the heat collecting plate is integrally formed with the frame fixed to the structure and synthetic resin. To provide a solar heat collector whose parts are not distorted or cracked.

The present invention will be described in detail below based on embodiments shown in the figures.

In the solar heat collector according to the present invention, a heat collecting plate part 1 that heats a heat medium passed inside by solar heat received on the outer surface and a frame 10 surrounding the outer periphery of this heat collecting plate part are integrally molded of synthetic resin, and the heat collecting plate part 1 is integrally molded with a synthetic resin. The plate part 1 is formed into a shape in which tube walls forming a plurality of conduits 15 are connected by a flat plate part 11 and continuous with the frame 10 by a flat plate part 12 provided around the periphery.
This device is characterized in that a notch 13 is provided at an arbitrary position on the flat plate portion to absorb thermal stress applied to the heat collecting plate portion.

The heat collecting plate portion 1 and the frame 10 are integrally formed into a continuous shape by blow molding polyethylene, and the second
As shown in the figure, the heat collecting plate 1 has a rectangular shape in which a plurality of pipes 15 running in the vertical direction are lined up on the left and right, and the upper and lower ends of each pipe 15 are connected by a header 16 and a lower header 17, respectively. The frame 10 is a hollow rectangular frame surrounding the entire circumference of the heat collecting plate part 1.

On one side of the heat collecting plate section 1, an inflow pipe 18 is further connected to each pipe 15.
The pipe wall forming each pipe line 15, 18 is continuous with a flat plate part 11 formed between each pipe line 15, 18 and running in the vertical direction.

Further, a flat plate part 12 is formed on the four peripheries of the heat collecting plate part 10 including the above-mentioned inflow pipe line 18, and the heat collecting plate part 1 and the frame 10 are connected to the inlet port 19 at one end of the inflow pipe line 18 and the upper header 16. Except for the upstream outlet 20 and the downstream outlet 21 of the lower header 17, they are continuous through this flat plate part 12.

As shown in FIG. 5, the above-mentioned inflow port 19 and each outflow port 20, 21 are opened into the frame 10 continuously from the inner wall of the frame 10, and an inflow pipe 24 and an outflow pipe 25 are separately prepared. .2
6 are connected to the main inlet 19 and outlet 20, 21 through opening windows 27 formed in the outer wall of the frame 10 at corresponding positions, respectively.

This connection can be achieved, for example, by threading the inlet 19 and each outlet 20, 21 that open in the frame 10, and
This is done by screwing the outflow pipes 25 and 26 together.

The heat medium such as water supplied from the inflow pipe 24 is heated by the solar heat received on the surface of the heat collector plate 1, and is collected in the upper header 16 through each pipe line 15, and then
The liquid is taken out through a pipe connected to an outflow pipe 25 protruding from 16.

The heat medium is taken out from the upper header 16 through the inflow pipe 2.
4, and the heat medium in the heat collecting plate part 1 is taken out at once from the outflow pipe 26 of the lower header 17 as needed.
Each of the flat plate parts 11 and 12 has a notch 13 at an appropriate position.
is provided, the thermal stress applied to the heat collecting plate part 1 is absorbed by the notch 13, and the frame 10 is fixed on a structure such as a roof.
The heat collecting plate part 1 restrained by the frame 10 is prevented from being distorted or cracked due to thermal stress.

In the embodiment shown in FIG. 2, flat plate portions 11 above and below the heat collecting plate portion 1
At the same time, vertically long notches 13 are formed in the flat plate part 11 formed between the adjacent conduits 15 at approximately the center in the left-right direction of the heat collecting plate part 1, An example is shown in which an L-shaped cutout 13 is provided in the flat plate part 12 located at one corner of the heat plate part 1, and each cutout 13 absorbs thermal stress applied to the heat collecting plate part 1 in the vertical and horizontal directions. As shown in FIGS. 6 and 7, the solar collector A configured in this manner is placed on a bottom plate 6 via a heat insulating material 3, the upper surface is covered with a transparent cover 4, and a frame 10 is placed on the bottom plate 6. The frame 10 is used by being fixed on a building structure with wire or the like, and the frame 10 is reinforced with a metal frame if necessary.

The folded bottom plate 6 and the frame 10 are fixed with adhesive, and the transparent cover 4 is fixed to the upper surface of the frame 10 by a frame 9 attached to the frame 10.

In the above embodiment, the flat plate portion 11 is located at the position shown in FIG.
, 12 is shown, the present invention is not limited to this, but as shown in FIGS. 1
Of course, 3 may be provided.

FIG. 8 shows an example in which horizontally long notches 13 are formed in the upper and lower flat plate parts 12 of the heat collecting plate part 1, and FIG.
A vertically long notch 1 is formed in two flat plate portions 11 that are wider than the others and are formed between adjacent pipes 15 at approximately the center in the left-right direction.
Fig. 10 shows an example in which notches 1 are formed in each of the flat plate parts 11 and 12 at the positions shown in Fig. 8 and the positions shown in Fig. 9.
3 is shown.

In FIG. 11, a plurality of elongated notches 13 are formed along the left and right sides in the upper and lower flat plate parts 12 of the heat collecting plate part 1, and L-shaped notches 13 are formed in the flat plate parts 12 at the four corners of the heat collecting plate part 1, respectively. An example is shown in Figure 12. In addition to the positions shown in Figure 11,
An example is shown in which two notches 13 are formed in the flat plate portions 11 running in the vertical direction located substantially in the middle of the left and right sides of the heat collecting plate portion 1, and FIG. 13 notches each
In the embodiment shown in FIG. 14, the upper heat collecting plate part Ia is formed by a flat plate part 14 formed in the upper and lower center and running in the left-right direction.
and a lower heat collecting plate part Ib, and each upper and lower heat collecting plate part Ia
An example is shown in which an upper header 16 and a lower header 17 are respectively formed in p I t), and a flat plate part 14 running left and right at approximately the center of the top and bottom of the heat collecting plate part 1 and each heat collecting plate part I a s I are shown. b Notches 1 are provided in the flat plate portions 11 and 11 that run vertically approximately in the center of the left and right sides.
3 and a substantially cross-shaped notch 13 is formed in the entire heat collecting plate part 1, and the thermal stress applied to the heat collecting plate part 1 in the vertical and horizontal directions is absorbed by the notch 13 at the center of the vertical and horizontal directions. It shows.

As described above, in the present invention, since the heat collecting plate part and the frame surrounding it are integrally molded from synthetic resin, the heat collecting plate part integrated with the frame can be placed in a predetermined position by directly attaching the frame to the structure. As a result, unlike conventional solar collectors in which a separately formed heat collecting plate is placed inside a box that is fixed to a structure, the heat collecting plate can be held securely by rattling inside the box. It is unavoidable that excessive force may act on the connecting agent with the external piping to be connected and damage this connection.Moreover, it is impossible to avoid applying excessive force to the connecting agent with the external piping to be connected. A notch is provided to absorb the thermal stress applied to the hot plate, so
Even though the heat collecting plate part is molded integrally with the frame and its movement is restricted by the frame, the thermal stress applied to the heat collecting plate part can be absorbed by the cuts made in the heat collecting plate part itself, and the heat collecting plate part In particular, in the present invention, an elongated notch is formed at an arbitrary position on the flat plate portion, and the longitudinal direction of the notch is approximately Since it is provided to absorb the thermal stress applied to the heat collecting plate in the vertical direction, the elongated notch opens and closes in the width direction to efficiently absorb the thermal stress on the heat collecting plate. It has the advantage of being able to

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a sectional view taken along the line I-I in Fig. The middle cross-sectional view along the ■-■ line, Figure 5 is the 2nd
6 is an exploded perspective view showing one usage example of the above, FIG. 7 is a vertical sectional view of the same, and FIGS.
4 are front views showing other embodiments of the present invention, and 1
10 is a heat collecting plate portion, 10 is a frame, 11.12 is a flat plate portion, and 13 is a notch.

Claims (1)

[Claims] 1. A heat collecting plate part that heats the heat medium passed inside by solar heat received on the outer surface and a frame surrounding the outer periphery of this heat collecting plate part are integrally molded from synthetic resin, and the heat collecting plate part forms a plurality of pipes. The tube wall is connected by a flat plate part and is formed into a shape continuous with the frame by a flat plate part provided around the circumference, and an elongated notch is provided at an arbitrary position of the flat plate part, approximately perpendicular to the longitudinal direction of the notch. A solar heat collector characterized in that it is provided to absorb thermal stress applied to a heat collecting plate part in a direction.