JPS6238195Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot water storage tank used in a solar water heater or the like in which a water level controller is directly attached to a water container.

A conventional example of the present invention will be explained with reference to FIGS. 1 and 2, taking a solar water heater as an example. 1 is a solar water heater in which a heat collector 2 and a hot water storage tank 03 for storing water to be heated are integrally formed, and the heat collector 2 is filled with a plurality of heat transfer liquids that can be changed into a gas-liquid two-phase state. heat pipe 4
. . . are housed integrally by a heat collecting plate 5, the hot water storage tank 03 consists of a water container 07, a heat insulating material 05 made of hard urethane foam, and an exterior body 06, and the heat dissipation portion 4a of the heat pipe 4 . The heat that is inserted into the water container 07 and obtained by the evaporation part 4b is released by the heat radiation part 4a, so that the water in the water container 07 that is supplied from the water supply part 8 and stored is heated, and the hot water is supplied from the hot water tap pipe 9. .

A ball tap (water level controller) 10 is directly attached to the water supply unit 8 to keep the water level in the water container 07 constant. , the mounting hole 01 of the tank wall 0A composed of the heat insulating material 05 and the exterior body 06
1 is passed through the mounting part 10a of the ball tap 10, and a threaded groove 12 is formed on the outer peripheral surface of the mounting part 10a. The ball tap 10 is mounted so that the tank wall 0A is held between the flange 10b and the nut 13.

By the way, since a water supply pipe (not shown) is connected to the ball tap 10, it must be firmly fixed, so the nut 13 is strongly tightened and the through hole 0
A large clamping force is applied around 11. For this reason, the heat insulating material 05 is crushed, so the large diameter washer 14 made of metal is interposed to disperse the tightening force and prevent the crushing. In addition, 16 is Patsukin.

However, according to such a configuration, the hot water storage tank 0A
Ball tap 10 in hot water tank 0A when internal water temperature is high
The disadvantage is that heat is transferred to the washer 14 through the mounting portion 10a and the nut 13, and the heat is radiated from the washer 14, resulting in large heat loss.

The present invention was developed in view of these drawbacks, and the purpose is to firmly fix the water level controller without using washers.

The basic structure of this project is that the tank wall is made up of a water container, a heat insulating material provided on the outside of the water container, and an exterior body provided on the outside of this heat insulating material, and the tank wall has a mounting hole that penetrates the tank wall. In this hot water storage system, the water level controller is fixed to the tank wall by inserting the mounting part of the water level controller into the mounting hole, providing two fastening members in the mounting part, and clamping the tank wall with the two fastening members. The tank is characterized in that at least one of the water container and the exterior body is formed of a synthetic resin wall integrally having ribs around the mounting holes on both sides in contact with the heat insulating material.

With this configuration, when the water level controller is fixed to the tank wall by the two fastening members, a large tightening force is applied around the attachment hole in the tank wall, but the ribs maintain the strength. Therefore, the washer, which was conventionally required, is no longer required, and there is no heat radiation from the washer, making it possible to provide a hot water storage tank with good heat retention. Furthermore, since the ribs are integrally formed with the water container or the exterior body, there is no need for washers as attachment parts for the water level controller, so there are significant effects such as a reduction in the number of parts and an improvement in installation workability.

An embodiment of the present invention will be described below with reference to the drawings.
In FIG. 4, the same parts as those in FIG. 2 are designated by the same reference numerals, and the explanation thereof will be omitted. Figures 3 and 4 show the main parts of the solar water heater as shown in Figure 1.
The figure is a main part diagram of the exterior body 6 before the mounting hole 11 is formed.
The figure is a sectional view of a main part of the hot water storage tank 3. The tank wall A of the hot water storage tank 3 consists of an exterior body 6, a heat insulating material 5, and a water container 7. The exterior body 6 is open at the bottom and has a small-diameter opening (not shown) at the top, and is injection molded from a weather-resistant synthetic resin mainly composed of polypropylene or polyethylene, and has mounting holes as shown in FIG. Since the entire structure including the periphery of the mounting hole 11 is inclined, a protruding step 6a is provided around the mounting hole 11 to obtain an outer surface parallel to the inner surface of the water container 7 and to facilitate tightening of the nut described later. A plurality of ribs 15 extending in the vertical direction including around the mounting hole 11 are integrally formed on the inner surface (the surface facing the heat insulating material 5). The water container 7 is a hollow container having a small-diameter opening on the upper surface opposite to the small-diameter opening of the exterior body 6, and is formed of synthetic resin by blow molding. The heat insulating material 5 is formed by covering the outside of the water container 7 with an exterior body 6 with a gap therebetween, and foaming and filling the space between both 6 and 7 with a foamed resin material such as hard urethane, and ribs 15... ...and water container 0
A small gap k with 7 is also filled with urethane.
After this foaming, the mounting hole 1 for attaching the ball tap 10
1 is drilled with a drill.

Then, the mounting part 10a of the ball tap 10 fitted with the gasket 16 is passed through the mounting hole 11 from the inside of the water container 7, and the nut 13 is inserted from the outside of the hot water tank 3.
The ball tap 10 is fixed to the tank wall A by screwing them together and tightening the mounting flange 10b and the nut 13 so as to sandwich the tank wall A.

Tank wall A around the mounting hole 11 when tightening this nut 13
When a tightening force is applied to the insulating material 5, the highly elastic heat insulating material 5 contracts. However, although the small gap k may be partially collapsed, the presence of the ribs 15 causes the heat insulating material 5 around the mounting hole 11 to shrink. The ball tap 10 can be firmly fixed without being completely crushed without the conventional washer 14. Furthermore, since the washer 14 is not provided, heat radiation due to heat transfer from the ball tap 10 can be reduced. Furthermore, since the ribs 15 are plate-shaped, there is no deterioration in heat retention performance.

In the above embodiment, in the mounting structure of the ball tap 10, the mounting flange 10a is attached to the ball tap 1.
Although it is integrally molded with the main body of 0, it may be attached to the ball tap 10 as a separate member.In short, a pair of fastening members are provided on the attachment part 10a with the tank wall A sandwiched between them.
It is sufficient if it can be tightened and fixed by these.
Also, the ribs 15... may be provided on the water container 7 side,
It may be provided in both the water container 7 and the exterior body 6.

[Brief explanation of drawings]

Figure 1 is a partially cutaway perspective view of a solar water heater;
The figure is a sectional view of the main part of the conventional example, Figure 3A is a sectional view of the main part of the first embodiment of the present invention, Figure 3B is a side view of the main part seen from the outside, and Figures 4A and 4B are the main part of the embodiment. They are a sectional view of a main part of the component and a side view of the main part seen from the outside. 5... Heat insulation material, 6... Exterior body, 7... Water container,
10...Ball tap (water level controller), 10a...
...Mounting part, 11...Mounting hole, 10b...Mounting flange (tightening member), 13...Nut (tightening member),
15...Rib.

Claims (1)

[Scope of utility model registration request] A tank wall is composed of a water container, a heat insulating material provided on the outside of this water container, and an exterior body provided on the outside of this heat insulating material. In a hot water tank, the water level controller is fixed to the tank wall by inserting the mounting part of the water level controller into the hole, installing two fastening members in the mounting part, and clamping the tank wall with the two fastening members. and at least one of the exterior bodies is formed of a synthetic resin wall integrally having ribs around the mounting holes on both sides in contact with the heat insulating material.