JPS5930848Y2 - Solar water heater hot water tank - Google Patents

Description

[Detailed description of the invention] This invention relates to a hot water storage tank in a solar water heater in which water is circulated by a thermosiphon and the temperature is gradually raised.

As shown in FIG. 1, a natural circulation type solar water heater generally sends water for heating to a heat collector 101 called a collector, and stores hot water heated by the heat collector 101. It is mainly composed of a hot water storage tank 102.

The hot water storage tank 102 is connected to the heat collector 1 through two connecting pipes, and has a multilayer structure in which a tank structure 103 blow-molded from polyethylene or the like is housed in a heat-retaining tank 104.

Although such a complicated configuration of the hot water storage tank 102 has been considered functionally necessary, the cost of the hot water storage tank 102 is extremely large.

This invention has good heat retention performance despite its simple configuration.
The object of the present invention is to provide a hot water storage tank for a solar water heater that can realize cost reduction.

Next, the configuration of the present invention will be specifically explained based on an embodiment shown in the drawings.

As an application example of the present invention, a hot water storage tank 1 in a natural circulation type solar water heater shown in FIG. 2 is a combined assembly of an upper lid element 1A and a lower container element 1B.

The container element IB is integrally molded with foamed polystyrene in the shape of a boat with an open upper side, and a cold water outlet 2, a hot water return port 3, and a hot water sampling port 4 are formed on the bottom side of the container element IB.

The cold water outlet 2, the hot water return port 3, and the hot water sampling port 4 are all reinforced with pipe material 5.

At the open edge of the container element 1B, a joining flange 7 extends outward over the entire circumference except for the water inlet 6.

Like the container element 1B, the lid element IA is integrally molded from polystyrene foam, is bonded and fixed to the upper part of the container element 1B, and closes the opening of the container element 1B.

As shown in the figure, a ball tap 8 is attached to a water supply port 6 formed in a part of the joint between the container element 1B and the lid element 1A, and a water supply source (not shown) is connected through the ball tap 8.
It is possible to supply water from

The styrofoam that constitutes the container element 1B and the lid element 1A is a closed cell material that has excellent heat insulation and water retention properties, and the hot water storage tank 1, which is the entire joint of the container element 1B and the lid element 1A, is
All parts have a single layer structure.

That is, the hot water storage tank 1 is simplified by integrating the tank structure and the heat retention tank.

Therefore, it is much easier to manufacture than ordinary ones, and the material used is only styrofoam, so the cost can be significantly reduced.

Of course, the heat retention of the hot water storage tank 1 is not impaired.
There is no problem in terms of strength.

As is clear from the following description of the examples, the hot water storage tank of the solar water heater of the present invention has a single-layer structure made of a closed-cell foam material that has heat insulation and water retention properties, so it is easy to manufacture. Since fewer types and amounts of materials are required, costs can be significantly reduced while maintaining functionality.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional natural circulation type solar water heater with a part heated, and Fig. 2 is a vertical front view showing a hot water storage tank of a natural circulation type solar water heater as an application example of the present invention. 3 are longitudinal sectional side views. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1... Hot water storage tank, 1A... Lid element,
1B...Container element, 2...Cold water outlet,
3...Hot water return port, 4...Hot water intake port,
5...Pipe material.

Claims (3)

[Scope of utility model registration request] (1) A hot water storage tank for a solar water heater characterized by a single-layer structure made of a closed-cell foam material that has heat insulation and watertight properties. (2) A hot water storage tank for a solar water heater according to claim 1 of the utility model registration claim, which is formed into upper and lower parts. (3) The hot water storage tank for a solar water heater according to claim 1 or 2 of the utility model registration claim, in which the connecting portion with the heat collector is reinforced with pipe material.