JPS599816B2 - Water heating equipment using solar heat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hot water supply system using solar heat that is easy to install and can provide high-temperature water.One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a house, and a hot water tank 2 is provided at the top of the roof, and a plurality of faucets 4 are installed in a hot water supply pipe 3 from this hot water tank 2, so that hot water can be supplied inside and outside the house 1. It is composed of

A plurality of pipes 5 are laid under the roof as shown in FIGS. 2 and 4, and the upper ends of these pipes 5 communicate with the hot water tank 2.

A water supply hole 6 and a drainage hole 7 are formed at a predetermined interval on the upper surface side of the pipe 5, and the short pitch portions of both holes 6 and 7 are communicated with each other, and the long pitch portion is blocked by a filler 8. ing.

In FIGS. 2 to 5, reference numeral 9 indicates a solar heat collection tile that can be fitted and communicated with the pipe 5.

In other words, 10 is a nearly box-shaped insulating body with an open top surface.
It consists of an internal insulation material made of polystyrene foam, foamed mortar resin, cement foam, etc., and an outer skin made of polypropylene film bag or coating.

Reference numeral 11 designates a first wall body disposed to close the open portion of the heat insulating main body 10, and reference numeral 12 designates a second wall body disposed outside the first wall body 11.

That is, integrated fitting portions 11A, 12A are formed from the outer edges of both walls 11, 12, and these fitting portions 11A, 1
By fitting 2A into the insulation main body 10, the three parts 10,
11, 1.2 are integrated.

At this time, a heated object flow space 13 is formed between the first wall 11 and the heat insulating body 10, and this space 13 is filled with polystyrene open foam 14.

Also, both wall trees 1 1. 12 is arranged so that a gap 15 is created between the wall bodies 11 and 12 under normal conditions, and is curved convexly toward the heated object side, that is, toward the heated object flow space 13 side.

Both walls 11 and 12 are made of a material with a large coefficient of thermal expansion and heat transfer, for example, the first wall 11 is made of polypropylene, polyethylene, polyvinyl chloride, nylon, etc., and the second wall 12 is made of polypropylene, nylon, etc. , polyvinyl chloride, metal, etc.

A water supply socket 16 and a drain socket 17 which communicate with the heated object flow space 13 are provided in the heat insulating main body 10 and project downwardly.
The filler 8 is fitted into the water supply hole 6 and the drain hole 7 with the filler 8 positioned in the middle, so that the heated object flow space 13 and the inside of the pipe 5 can be fitted and communicated with each other.

As shown in FIG. 1, a water storage tank 18 is provided on the ground side, and a water collection pipe 2 from a rain gutter 19 is connected to this water storage tank 1B.
0 is communicated through the filter 21.

Further, tap water 22 can also be supplied to the water storage tank 18, and an overflow port 23 can also be provided.

A water supply pipe 26 having a pump 24 and a regulating valve 25 is led from the water storage tank 18, and this water supply pipe 26 communicates with the lower end of the pipe 5.

27 indicates a relief pipe having a regulating valve 28.

In the solar hot water supply system configured as described above, the basic flow of water is as follows.

That is, water in the water storage tank 18 is sucked out by the pump 24 and supplied to the lower end of each pipe 5 through the water supply pipe 26.

The water then enters the heated object flow space 13 of the lowermost solar heat collecting tile 9 through the water supply socket 16, flows through the polystyrene continuous foam 14, and then flows back into the pipe 5 through the discharge socket 17.

At this time, it is flowing up one step through the filling 8.

Then, it flows through the second solar heat collection tile 9 from the bottom in the same manner as described above.

By repeating this process, the water gradually rises, and at this time, it is heated by the solar heat collecting tiles 9, and thus becomes hot water and flows into the hot water tank 2.

The hot water in the hot water tank 2 can be used as desired by operating the faucet 4.

During rainy weather, rainwater collected in a rain gutter 19 is supplied to a water storage tank 18 via a water collection pipe 20 and a filter 21, and at that time, the covalent water is sent to an overflow port 23.

Moreover, the shortage is replenished with tap water 22. In addition, at night, the water in the solar heat collection tile 9 can be collected into the water storage tank 18 by backflow.

Absorption of solar heat in the solar heat collecting tile 9 is performed as follows.

That is, in the normal state shown in FIGS. 4 and 5, a uniform gap 15, that is, an air layer, is formed between both walls 11 and 12.

In this state, solar heat A1 heats the second wall 12, and then heats the first wall 11 due to convection heat transfer in the air layer.

Further, water B from the water supply socket 16 flows through the heated object flow space 13, absorbs heat from the first wall 11 during that time, and is discharged from the discharge socket 17 as hot water b0.

In this way, normal heat transfer C1 takes place under normal conditions.

Figure 6 shows a state in which it is receiving high solar heat A2.

According to this, the second wall 12 thermally expands and descends, and the gap 1
5 is reduced to bring more parts into contact with the first wall body 11.

Therefore, the heat transfer C2 is carried out directly at a high temperature, so that high-temperature water b2 can be obtained.

FIG. 7 shows a state in which low temperature water B2 is being supplied.

According to this, the first wall 11 heat-shrinks and rises, and the gap 1
5 is reduced so that more parts come into contact with the second wall body 12.

Therefore, the heat transfer C2 is carried out directly at a high temperature, so that a high temperature water b2 can be obtained.

If we look at the above all together, Figure 5 shows the case where the sun heats up and the supplied water is at room temperature (normal temperature - normal water), and Figure 6 shows the case where the solar heat is high and the supplied water is at room temperature (high temperature - normal water). FIG. 7 shows a case where the solar heat is at room temperature and the supplied water is at low temperature (normal temperature - low water).

In either case, there is a difference in heat transfer, but the heat transfer is unidirectional.

Looking at another form, in [room temperature and high water] the state shown in Figure 5,
[High temperature and high water] the state shown in Figure 6, [High temperature and low water] the state that combines Figures 6 and 7, [Low temperature and constant water], [
In the cases of [low temperature and high water] and [low temperature and low water], the deformed state shown in FIG. 7 in which the gap 15 increases is obtained, and in both cases, heat transfer occurs in one direction.

The open polystyrene foam 14 also elastically deforms in accordance with the thermal deformation of the second wall 12.

As mentioned above, water B supplied from the water supply socket 16
B2 is discharged from the drain socket 17 as hot water b1 and b2, but in the heated object flow space 13, it flows through the polystyrene continuous foam 14.
Due to its nature, no backflow of hot water 1)1yb2 occurs, and therefore the temperature increase line from the inlet to the outlet can be maintained without disturbance.

Further, when external pressure acts on the second wall 12, the gap 15
The second wall 12 is only deformed to reduce the external pressure, and this external pressure is applied to the open polystyrene foam 1 through the first wall 11.
It can be caught on the 4th side.

As described above, according to the present invention, the solar heat collecting tile is installed in the water supply hole and the drain hole of the pipe laid under the roof by fitting the water supply socket and the drain socket in communication with each other. Tiles can be installed easily.

In addition, solar heat collecting tiles have a space between the first wall body and the second wall body, and are configured to allow heat transfer in only one direction, so unlike conventional heat collecting tanks, they can There is no possibility that the absorbed heat will be dissipated during rainy weather, and the twist collection rate is extremely high.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic overall explanatory diagram, Fig. 2 is a partially cutaway plan view of the main part, and Fig. 3 is a perspective view of a solar heat collecting tile seen from the bottom side. Figure 4 is a sectional view taken along line X-X in Figure 3, and Figures 5 to 7 are Y-Y in Figure 4.
The respective operating states are shown in cross-sectional views. 1... House, 2... Hot water tank, 3.
...Hot water pipe, 5...Pipe, 9...
...Solar heat collecting tile, 14...Polystyrene continuous foam, 18...Water storage tank, 24...
...Pump, 25...Adjusting valve, 26...
・Water supply pipe.

Claims (1)

[Claims] 1. A hot water tank capable of supplying hot water is installed on the top of the roof, a pipe communicating with the hot water tank is laid under the roof, fillings are placed in the pipes at appropriate intervals, and water is supplied to the pipes before and after the fillings. An almost box-shaped insulating body with holes and drainage holes and an open upper surface, and a downwardly convex insulating body made of a material with a large thermal expansion coefficient and heat transfer coefficient, which is provided to close the open part of the insulating body. a curved first wall; the first wall is integrally provided with the heat insulating body at an appropriate distance from the first wall; a second wall convexly curved downward, and a water supply socket and a drainage socket provided on the lower surface of the heat insulating body in communication with a heated object flow space formed between the first wall and the heat insulating body. A hot water supply system utilizing solar heat, characterized in that a solar heat collecting tile consisting of the above is provided in the water supply hole and the drainage hole of the pipe, with the water supply socket and the drainage socket thereof being fitted and communicated with each other.