JPS6337652Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention can be installed, for example, on the roof of a building,
The present invention relates to a solar water heater used for hot water supply, and particularly to a hot water pipe joint in this solar water heater.

[Technical background of the invention and its problems]

As shown in FIG. 1, a conventional solar water heater has a tank body 2 constituting a hot water storage tank installed in an upper frame 1, and an upper end 2a of this tank body 2.
A water supply faucet 3 with a built-in float valve is attached to the water supply faucet 3, and an upper hot water supply nozzle 4 forming an upper hot water supply port is provided at the upper part of the tank body 2 below the water supply faucet 3.
Tank body 2 below this upper hot water supply nozzle 4
A lower hot water supply nozzle 5 is attached to the upper hot water supply nozzle 5, and the upper hot water supply nozzle 4 and the lower hot water supply nozzle 5 are connected to each hot water supply pipe 7, 8 via each pipe joint 6, and on the other hand, a lower frame body is attached below the above mentioned upper frame body 1. 9 is installed in the lower frame body 9, each storage chamber 10, 11 is divided by a partition plate 12, and each heat exchanger 13, formed by a heat sink plate is installed in each storage chamber 10, 11. 14, and these heat exchangers 13, 14 and the tank body 2 are connected by a pair of communication pipes 15, 16, respectively.

Therefore, in the solar water heater described above, when a certain amount of water is supplied from the water supply faucet 3 into the tank body 2 and both heat exchangers 13 and 14, the water in the tank body 2 as a hot water storage tank is Each communication pipe 1
5 into both heat exchangers 13 and 14. The water supplied to both heat exchangers 13 and 14 exchanges heat with solar heat to become hot water, and this heated hot water is returned to the tank body 2 through each of the communication pipes 16, and When in use, the hot water flows out through the hot water supply pipes 7 and 8 and is consumed.

In particular, as shown in FIG.
7 is attached by welding, and a hot water supply nozzle 19 having a reinforcing pipe 18 press-fitted therein is protruded from the side wall of the tank body 2 facing the pipe joint 17.
7 and the hot water supply nozzle 19 are connected by a hose 20 made of a flexible pipe, and both ends of the hose 20 are tightly secured with respective hose bands 21.

However, the above-described hot water supply pipe joint has a large number of component parts, and there is a risk of water leakage from the seal portion formed by each hose band 21, as well as a risk of cracking due to aging over time.

On the other hand, the hot water supply pipe joint shown in FIGS. 3 and 4 is another embodiment of the hot water supply pipe joint shown in FIG. The hot water supply nozzle 19 is provided so as to bridge one side of the upper frame 1, and the base of the hot water supply nozzle 19 is screwed with a nut 23 through a pair of packings 22. Furthermore, a hot water supply pipe 7 is attached to one end of the hot water supply nozzle 19. and one end of the hot water supply nozzle 19 is fixed to the upper frame 1 by a rotation prevention plate 24 which also serves as a decorative plate and is fixed to the upper frame 1 with a set screw 24a.

However, because the above-mentioned hot water pipe joint connects the upper frame 1 and the tank body 2 in a substantially integral manner, the tank body 2 is repeatedly and alternately filled with water and empty. As a result of repeated up-and-down movements, unreasonable bending stress is applied to the hot water supply joint, causing cracks due to material fatigue, which may lead to water leakage.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and is designed to prevent the hot water pipe joint from receiving bending stress caused by the up-and-down movement of the tank body when it is full and when it is empty. The present invention provides a solar water heater which aims to prevent cracks due to fatigue and the like, and also to reduce the number of component parts, facilitate assembly, and save labor through mass production.

[Summary of the idea]

This invention has a hot water supply nozzle protruding from the tank body,
This hot water supply nozzle is provided with a hot water supply pipe socket for connecting a hot water supply pipe via packing, and this hot water supply pipe socket is fixed directly or indirectly to the base of the hot water supply nozzle.

[Example of idea]

Hereinafter, an illustrated embodiment in which the present invention is applied to a solar water heater will be described.

The present invention will be described with the same reference numerals attached to the same constituent members as in the above-described specific example.

In Figures 1, 5, and 6, reference numeral 1
is an elongated upper frame of a solar water heater. Inside the upper frame 1, a tank body 2 constituting a hot water storage tank is installed. On one side wall of this tank body 2 is a hot water supply tank. A nozzle 25 is provided protrudingly. Moreover, the base 25a of this hot water supply nozzle 25
has a hexagonal shape, and a screw 25b is carved on the outer periphery of the hot water supply nozzle 25 close to the base 25a. Further, at the free end of the hot water supply nozzle 25, a hexagonal hot water supply pipe socket 27 for connecting the hot water supply pipe 8 is screwed onto the above 25b through a packing 26.
A hexagonal anti-rotation member 28 is crowned on the outer side of 7. Furthermore, this rotation preventing member 28
One end portion thereof is fitted and fixed to the base portion 25a of the hot water supply nozzle 25. The free end of the hot water supply pipe socket 27 loosely passes through a through hole 29 formed in the upper frame 1, and the hot water supply pipe socket 27 has a gap 30 with respect to the upper frame 1. is formed.

Therefore, in the hot water pipe joint of the present invention, since the upper frame 1 and the tank body 2 are free, the tank body 2 is repeatedly raised and lowered when it is full and when it is empty. However, there is no risk of receiving excessive bending stress, and water leakage due to cracks can be prevented, and the number of component parts can be reduced.

Next, in another embodiment of the present invention shown in FIGS. 7 and 8, a hot water supply pipe socket 27' is packed into a hot water supply nozzle 25 into which a reinforcing pipe 25a is press-fitted.
6, and the hot water supply nozzle 25
and the hose 31 on the outside of the hot water pipe socket 27'.
Both ends of this hose 31 are tightly secured with respective hose bands 32.

On the other hand, in another embodiment of the present invention shown in FIGS. 9 and 10, a hot water supply pipe socket 27 is fitted to the hot water supply nozzle 25 via a packing 26, and a flange 27a of this hot water supply pipe socket 27 is fitted. is directly fixed to the base 25a of the hot water supply nozzle 25 with a plurality of set screws 33.

Next, the embodiment shown in FIGS. 11 and 12 is another embodiment of the present invention, and is a modification of the above-mentioned FIGS. 9 and 10. That is,
In this embodiment, a hot water supply pipe socket 27 is fitted to a hot water supply nozzle 25 via a packing 26, and
The flange 27a of the hot water supply pipe socket 27 is directly fixed to the outer periphery of the base 25a of the hot water supply nozzle 25 with a set screw 33.

[Effect of idea]

As described above, according to the present invention, the hot water supply nozzle 25 is provided protruding from the tank body 2, and the hot water supply nozzle 2
5 is provided with a hot water supply pipe socket 27 for connecting the hot water supply pipe 8 through a packing 26, and this hot water supply pipe socket 27 is directly or indirectly connected to the hot water supply nozzle 2.
Since it is fixed to the base 25a of 5, it is possible not only to simplify the configuration by reducing the number of component parts, but also to facilitate assembly and adjustment, saving labor through mass production, and reducing bending stress. Since it is not exposed to water, there is no risk of cracks occurring, and water leakage can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional diagram diagrammatically showing a conventional solar water heater, Fig. 2 is an enlarged sectional view of chain circle A in Fig. 1, and Fig. 3 is a hot water supply pipe shown in Fig. 2. A sectional view showing another embodiment of the joint, FIG. 4 is a front view of the same as above,
Fig. 5 is a side view showing half of the essential parts of the solar water heater according to the present invention in cross section, Fig. 6 is an exploded perspective view of Fig. 5, and Figs. It is each figure which shows the Example of. DESCRIPTION OF SYMBOLS 1... Upper frame body, 2... Tank body, 8... Hot water supply pipe, 25... Hot water supply nozzle, 26... Packing, 27... Hot water supply pipe socket, 28... Rotation prevention member, 29... Through hole, 30...Gap.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hot water supply nozzle is provided protruding from the tank body, a hot water supply pipe socket is provided to connect the hot water supply pipe via packing to the hot water supply nozzle, and this hot water supply pipe socket is directly or indirectly connected to the above hot water supply nozzle. A solar water heater characterized by being fixed to the base of. 2. The solar heating device according to claim 1 of the utility model registration claim, characterized in that a rotation prevention member is placed on the outside of the hot water supply pipe socket, and one end of the rotation prevention member is fixed to the base of the hot water supply nozzle. Water heater. 3. The solar water heater according to claim 1, wherein the hot water supply pipe socket is fixed to the base of the hot water nozzle with a set screw.