JPS6326687Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a solar hot water system that uses solar heat to heat the water supplied from the ball tap by attaching a ball tap to a water storage tank equipped with a resin exterior cover and then provides hot water. Concerning vessels.

Conventionally, as shown in Fig. 1, this type of solar water heater has a main body 1a of a ball tap 1 housed in a hot water storage tank 3 equipped with a resin outer cover 2, and is mounted with a flange 1b having a threaded outer periphery. Part 1c is the hot water tank 3
The flange 1b is inserted into the through hole 4 provided in the water tank, and the flange 1b is brought into contact with the interior cover (water tank) 5 via the sealing member 6, and the reinforcing metal fitting 7 and washer 8 are interposed from the outside of the hot water tank 1 to the attachment part 1c. By screwing the nut 9 together, the ball tap 1 is attached to the hot water tank 3 while the reinforcing metal fitting 7 is in contact with the exterior cover 2. When tightening the nut 9, the reinforcing metal fitting 7
The tightening force is dispersed to prevent the heat insulating material 10 filled between the exterior cover 2 and the interior cover 5 from being crushed, and to prevent the exterior cover 2 from cracking.

However, in the conventional example described above, there is no engagement between the exterior cover 2 and the reinforcing metal fitting 7, so when the nut 9 is tightened, the reinforcing metal fitting 7 rotates together with the reinforcing metal fitting 7, making it time-consuming to attach the ball tap 1. However, a rectangular type had the disadvantage that it would look unsightly if it was installed while being rotated.

The present invention has been made to eliminate the above-mentioned drawbacks, and is a method of rotating reinforcing metal fittings to reinforce the attachment part of the ball tap when the ball tap is attached to a hot water tank equipped with a resin exterior cover. The purpose is to prevent the ball tap from moving so that the ball tap can be easily installed.

The basic structure of the present invention is as described in the claims for utility model registration, and when installing the ball tap, the square periphery of the engagement recess of the reinforcing metal fitting is brought into close contact with and engaged with the square periphery of the protrusion of the exterior cover. By tightening the nut, it is possible to reliably prevent rotation of the reinforcing metal fittings due to the tightening. Further, the positioning of the auxiliary metal fittings becomes easy, and the attachment of the ball tap can be easily and reliably done with good appearance.

An embodiment of the present invention shown in the drawings will be described below. FIG. 2 shows a solar water heater to which the present invention is applied, in which a heat collector 11 and a hot water storage tank 12 are housed integrally in an outer box 13. A heat collecting plate (not shown) equipped with a heat pipe is disposed within the heat collector 11, and a heat dissipating portion of the heat pipe is inserted into the hot water storage tank 2 in a watertight manner. A ball tap 14 and an overflow pipe 15 to which a water supply pipe (not shown) is connected extend through the upper part of one side wall of the hot water storage tank 2, and a hot water outlet 16 is provided at the lower part of the other side wall. The water in the hot water storage tank 12 that is supplied to a certain level at the ball tap 14 in the morning is heated by the heat transfer action of the heat pipe during the day and becomes hot water, and in the evening the water is connected to the hot water supply pipe (not shown) from the hot water outlet 16. It is used in bathtubs etc. Note that 17 is a lid that closes an opening (not shown) provided in the top wall of the hot water storage tank 12.

As shown in FIGS. 3 and 4, the hot water tank 12 has an interior cover (water tank) 18 made of heat-resistant synthetic resin such as high-density polyethylene, and an exterior cover 19 made of weather-resistant polypropylene or the like. A synthetic resin material is used, and a heat insulating material 20 such as hard urethane foam is filled between the interior cover 18 and the exterior cover 19. A protrusion 19a having a rectangular periphery such as a quadrangle is integrally molded on the protrusion 19a. The ball tap 14 is the main body 14a
The mounting portion 14c with the flange 14b facing the hot water storage tank 12 is inserted into the through hole 21, and the flange 14b is attached to the sealing member 2.
A rectangular reinforcing metal fitting 23 and a washer 2 are brought into contact with the interior cover 18 via the washer 2 and have a mating recess 23a formed therein, which has the same rectangular periphery that closely fits with the rectangular periphery of the protrusion 19a of the exterior cover 19.
The nut 25 is screwed onto the mounting portion 14c from the outside of the hot water tank 12 with the nut 25 in between and tightened, thereby being watertightly attached to the hot water tank 12.

According to this embodiment, the ball tap 14
When attaching the nut 25 to the hot water tank 12, the nut 25 can be tightened while closely engaging the square edge of the engagement recess 23a of the reinforcing metal fitting 23 with the square edge of the protrusion 19a of the exterior cover 19. Since the reinforcing metal fittings 23 do not rotate as the reinforcing metal fittings 23 are tightened, installation can be carried out quickly. Also, since the reinforcing metal fittings 23 are positioned, even though the reinforcing metal fittings 23 have a rectangular shape,
A good-looking installation is done. Of course, Natsu 25
Since the tightening force is dispersed by the reinforcing metal fittings 23, the heat insulating material 20 will not be crushed and lose heat retention, and the exterior cover 19 will not be cracked, and the strength of the attachment part of the ball tap 14 will be increased. can be kept sufficiently.

Since the present invention is constructed as described above, when attaching the ball tap to the hot water storage tank, the square periphery of the protrusion on the exterior cover and the square periphery formed on the reinforcing metal fitting that reinforces the attachment part of the ball tap. By tightly engaging the ball taps, it is possible to reliably prevent the square reinforcing metal fittings from rotating as the nuts are tightened, and the ball tap can be easily and reliably installed in the hot water tank with good appearance. The strength of the mounting part of the ball tap can be maintained high by using reinforcing metal fittings, and the desired purpose can be achieved without adding new parts.It has excellent industrial efficiency and is of great practical value. be.

[Brief explanation of drawings]

Figure 1 is a sectional view of the main parts of a conventional solar water heater, Figure 2 is a perspective view of a solar water heater that is an embodiment of the present invention, and Figure 3 is a partially cutaway view of the main parts of Figure 2. FIG. 4 is an enlarged sectional view of the main part of FIG. 2. 12...Hot water tank, 14...Ball tap, 14
a...ball tap body, 14b...flange,
14c...Mounting part, 19...Exterior cover, 19a
...Protrusion, 21...Through hole, 23...Reinforcement fitting, 2
3a...meshing recess, 25...nut.

Claims (1)

[Scope of utility model registration request] The main body of the ball tap is stored in a hot water storage tank equipped with a resin outer cover, and the mounting part with a flange with threaded outer circumference is inserted into a through hole in the hot water storage tank, and the flange is attached to the inner wall of the hot water storage tank. The ball tap can be attached to the hot water storage tank while the reinforcing metal fitting is in contact with the exterior cover by screwing the nut through a rectangular reinforcing metal fitting from the outside of the hot water storage tank to the above-mentioned mounting part. The exterior cover has a protrusion having a periphery with a square cross section formed around the periphery of the through hole, and the reinforcing metal fitting has an engaging recess formed with a periphery having a rectangular cross section that fits with the periphery of the protrusion. solar water heater.