JPS6311562Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a solar water heater that is integrally provided with a flat heat collector and a housing-shaped hot water storage tank connected to each other.

Generally, this type of solar water heater is equipped with a flat plate-shaped heat collector 1 and a housing-shaped hot water storage tank 2 connected to each other, as shown in Figs. It is hemmed to a slope. Since solar water heaters do not have any stain prevention measures on their outer surfaces, they are usually covered with rainwater and dust and are in a very dirty condition, which causes customer dissatisfaction and is undesirable for the urban landscape. Countermeasures were desired.

The most conspicuously dirty part of a solar water heater is the hot water tank 2. Dust and sand that accumulates on the top surface 4 of the hot water tank 2 on a sunny day are washed away by rainwater and adhere to the front side 5 and sides 6 of the hot water tank 2. After the rain stops, raindrops are on the front 5
By drying while adhering to the surface and the side surface 6, raindrop-shaped stains are generated. In particular, the front face 5 of the hot water tank 2 on the heat collector 1 side (south side) is the part where the solar water heater is tilted forward by an average of 30 degrees, so dirt tends to concentrate and is the most visible part. It is emphasized. If the front surface 5 of the hot water storage tank 2 is pulled back from the perpendicular line as shown in FIG. 2, the dirt will become patchy and more noticeable.

Therefore, as shown by the broken line in FIG.
It has been proposed to prevent the flow of rainwater from the front surface 5, but the rainwater dammed up by the protrusion 7 is concentrated on one side 6 due to the height difference in the left and right direction. Due to the flow, a number of raindrop-shaped stains were formed only on one side 6, making it unsightly.

The present invention was developed in view of the above-mentioned facts, and is designed to prevent rainwater from flowing from the top of the tank to the front, while also allowing rainwater to flow evenly and in a straight line to both sides. The purpose is to make stains as inconspicuous as possible.

The basic structure of the present invention is as described in the claims of the utility model registration, that is, a protrusion is provided at the boundary between the front surface of the hot water tank on the heat collector side and the top surface, and the center of the top surface is made the highest along the bottom of the top surface of the protrusion,
This is achieved by forming a groove sloping downwards on both ends, so that rainwater on the upper surface is dammed up by the projections, preventing it from flowing out to the front, and the gradient of the groove is used to divert the dammed up rainwater to both sides, allowing it to flow in a straight line.

Therefore, according to the present invention, there is no raindrop-like dirt on the front surface, which is the most visible part of the hot water tank, and the rainwater flows evenly and in a straight line on both sides, making it difficult for dust to accumulate. , it can make raindrop-shaped dirt almost invisible, it can avoid damaging the beauty of the solar water heater or the cityscape, and since the protrusions and grooves can be integrally molded with the hot water tank, there is no need to increase the number of parts. Excellent industrial properties.

Next, an embodiment of the present invention shown in the drawings will be described. In Figures 3 and 4, 8 is a flat heat collector, and 9 is a housing-like hot water storage tank.The heat collector 8 and the hot water storage tank 9 are connected together to form a solar water heater. It consists of Front surface 10 of the hot water storage tank 9 on the heat collector 8 side
A protrusion 12 protruding upward is formed at the boundary between the top surface 11 (the surface installed facing south), and the protrusion 12
A groove 1 that is highest at the center of the upper surface along the hem on the upper surface 11 side and slopes downward toward both ends.
3 is formed.

In order to make the groove 13 have the above-mentioned slope, as shown in FIG. 5, while keeping the slope of the protrusion 12 constant, the groove 13 formed at the bottom of the protrusion 12 is made shallower by increasing the radius at the center of the upper surface. The closer you go to both ends, the smaller and deeper the radius is. Alternatively, as shown in FIG. 6, a groove 13 having a constant radius may be formed at the bottom of the protrusion 12, with the slope at the center of the upper surface being the gentlest, and the slope becoming steeper toward both ends.

According to this embodiment, the upper surface 11 of the hot water storage tank 9
Even if it rains with dust, sand, etc. accumulated on the surface, the rainwater is dammed by the projections 12 and does not flow down the front surface 10. The flow is divided evenly to the left and right along the slope of the groove 13 and in a straight line, and both sides 1
It starts flowing down from 4th and 14th.

Therefore, raindrop-shaped dirt can be prevented from forming on the front surface 10 of the hot water tank 9, which is the most conspicuous part of the solar water heater, and rainwater can flow in a straight line on both sides, which are the paths of rainwater. Dust does not accumulate easily and dirt becomes almost invisible. In addition, the protrusions 12 and grooves 13 are the exterior cover (generally made of resin) of the hot water storage tank 9.
Since it can be integrally processed with the product, it is possible to take measures against contamination without increasing the number of parts. Furthermore, a reflective plate for the heat collector 8 may be attached to the front surface 10 of the hot water storage tank 9, and in this case, the reflective effect is maintained well by preventing dirt.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the installed state of a conventional solar water heater, Fig. 2 is a side view, Fig. 3 is a perspective view of essential parts of a solar water heater showing an embodiment of the present invention, and Fig. 4 is a perspective view showing the installed state of a conventional solar water heater. Similarly, a side view of the main part, and FIGS. 5 and 6 are explanatory diagrams showing a method of forming grooves. 8... Heat collector, 9... Hot water storage tank, 10... Front,
11...Top surface, 12...Protrusion, 13...Groove.

Claims (1)

[Scope of utility model registration request] In the case where a flat heat collector and a housing-like hot water storage tank are connected and integrated, an upwardly protruding projection is provided at the boundary between the front surface and the top surface of the hot water storage tank on the heat collector side. A solar water heater, characterized in that a groove is formed along the hem of the upper surface of the protrusion, the center part of the upper surface being the highest, and having a downward slope toward both ends.