JPS6337644Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a solar water heater equipped with a heat collecting section and a hot water storage tank disposed in an inclined state above the heat collecting section. be.

Structure of conventional example and its problems A conventional solar water heater has a structure as shown in FIGS. 1 and 2. That is, in FIGS. 1 and 2, 1 is a hot water storage tank, and a water supply pipe 3 having a ball tap 2 is attached to the upper side wall of the hot water storage tank 1. Reference numeral 4 denotes a water guide pipe located below the water supply pipe 3 and arranged in the hot water storage tank 1, and this water guide pipe 4 guides water supplied from the water supply pipe 3 to the lower side of the hot water storage tank 1. Reference numeral 5 denotes a heat collecting section, and this heat collecting section 5 is connected to the hot water storage tank 1 through an outgoing pipe 6 and a return pipe 7. Reference numeral 8 denotes a hot water outlet provided at the bottom of the side wall opposite to the side wall to which the water supply pipe 3 of the hot water storage tank 1 is attached, and one end portion of the hot water guide pipe 10 having a bendable bellows portion 9 is attached to this hot water outlet 8. , and a float 11 is attached to the other end of the molten metal guide pipe 10, and the opening at the other end is used as a molten metal inlet 12.

In the above-mentioned conventional configuration, to explain its operation, water supplied from the water supply pipe 3 into the hot water storage tank 1 is guided into the heat collecting part 5 via the outgoing pipe 6, and the water is transferred to the heat collecting part 5. The hot water is heated by solar heat and enters the hot water storage tank 1 through the return pipe 7, and is stored sequentially from the upper part of the hot water storage tank 1. This hot water is then transferred from the hot water intake port 12 to the hot water pipe 1.
0 and taken out from the outlet 8. In this case, since the hot water pipe 10 has a bendable bellows part 9 and a float 11 is attached,
When the water level in the hot water storage tank 1 decreases due to hot water being taken out, the hot water supply pipe 10 also descends accordingly. Therefore, by providing such a movable hot water supply pipe 10, Regardless of the amount of hot water supply flow rate, the hot water supply pipe 10 can always be positioned below the water surface, so that the air trapping phenomenon that occurs due to the relationship between hot water supply flow rate and water supply capacity can be prevented.

However, since the conventional molten metal pipe 10 was installed using the configuration shown in FIG. 2, it had the following drawbacks. That is, to install it, as shown in FIG.
Attach the spout 8 with a fixing screw 14 through the spout 8, and fix one end of a flexible bellows part 9 made of a rubber material to the spout 8 with a hose band 15, and then fix the other end of the bellows part 9 to the spout 8. Since the synthetic resin or metal molten metal pipe 10 with the float 11 attached thereto is fixed with a hose band 16, the number of parts increases and the molten metal pipe 10 has a float 11 attached thereto.
The mounting part 0 is an opening 1 provided in the upper part of the hot water tank 1.
Since it is located far from 7, it is very difficult to install it.

Purpose of the Invention In view of the above-mentioned conventional problems, an object of the present invention is to provide a solar water heater having a structure in which a float type hot water pipe can be easily attached.

Structure of the invention In order to achieve the above object, the present invention includes a hot water outlet provided at the lower part of the side wall of the hot water storage tank, which is formed integrally with the hot water storage tank, and a protrusion for preventing slippage at the tip of one end of the float type hot water pipe. At the same time, a plurality of notches are provided in the axial direction from the tip, and one end of the float type hot water guide pipe is fitted into the hot water outlet from the inside of the hot water storage tank using the elastic force of the notches, In addition, the retaining protrusion is engaged with the outer end surface of the spout. According to this configuration, by simply pushing one end of the float-type molten metal pipe into the spout, it can be attached by elastic force. This has the practical effect of significantly improving the installation workability with a small number of parts because it is prevented from coming off.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 3 shows a side sectional view of a heat pipe type solar water heater in an embodiment of the present invention,
In addition, FIG. 4 shows a cross-sectional view taken along line A-A' in FIG.
A heat collecting part 23 is a hot water storage tank which is arranged in an inclined state above the heat collecting part 21, and the lowest part of the hot water storage tank 23 has the plurality of heat collecting parts 22a disposed therein. Condensing part 22b of book heat pipe 22
has been set up. 24 is a water supply pipe attached to the upper side wall of the hot water storage tank 23, and has a ball tap 25. 26 is a hot water storage tank 2 located below the water supply pipe 24;
This water guide pipe 26 is a water guide pipe disposed inside the hot water tank 3 and guides the water supplied from the water supply pipe 24 to the lower part of the hot water storage tank 23. Reference numeral 27 denotes a hot water outlet that is integrally formed in the lower part of the side wall of the hot water storage tank 23 opposite to the side wall to which the water supply pipe 24 is attached, so as to protrude outward. One end 2
8a is connected to the float 29, and a float 29 is attached to the other end 28b of the float-type molten metal guide pipe 28, and a molten metal sampling port 30 is provided on the upper surface.

The float type hot water supply pipe 28 has one end 2
8a is composed of a straight pipe made of synthetic resin such as polyethylene, and the other end 28b is composed of a molded pipe made of synthetic resin such as polyethylene having a plurality of bendable bellows parts 31 and straight pipe parts 32, This formed pipe is directly attached to the straight pipe by screwing.

Also, one end 28a of the float type hot water pipe 28
As shown in FIG. 5, a ring-shaped retaining protrusion 33 that protrudes outward is formed at the tip, and a plurality of notches 34 are provided in the axial direction from the tip. 34 gives it elasticity. Reference numeral 35 denotes a recess formed on the inner end surface of the hot water outlet 27 of the hot water storage tank 23, and a protrusion 36 is provided on the float type hot water pipe 28 to correspond to the recess 35.
By fitting this protrusion 36 into the recess 35 as shown in FIG. 6, the float type molten metal pipe 28 is prevented from rotating in the circumferential direction. 37 is the float type hot water pipe 28
This metal pipe 37 is a metal pipe such as stainless steel that is fitted into the inner surface of the straight pipe constituting the one end portion 28a.
8 a into the hot water outlet 27 from the inside of the hot water storage tank 23 using the elastic force of the notch 34 , and after engaging the retaining protrusion 33 with the outer end surface of the hot water tap 27 , the hot water storage tank 23 is fitted. It is driven into the inner surface of one end 28b of the float-type molten metal pipe 28 from the outside. Thereby, the attachment of the one end portion 28a of the float-type molten metal pipe 28 to the tap water outlet 27 is further improved. Also, this metal pipe 37
serves to prevent deformation of the outlet 27 and one end 28a of the float-type hot water guide pipe 28 when another hose 38 is fixed to the outside of the outlet 27 with a clamper 39, etc. Since the length is longer than the length of the plurality of notches 34 provided, the low-temperature hot water located at the bottom 23' of the hot water storage tank 23 and the hot water passing through the float type hot water guide pipe 28 can be mixed during hot water supply. It can be prevented.

In the above embodiment, the float-type hot water pipe mounting structure of the present invention is applied to a heat pipe type solar water heater, but it can also be applied to a natural circulation type solar water heater.

Effects of the invention As described above, according to the invention, the hot water outlet provided at the lower part of the side wall of the hot water storage tank is formed integrally with the hot water storage tank,
In addition, a protrusion for preventing slippage is formed at the tip of one end of the float-type molten metal guide pipe, and a plurality of notches are provided in the axial direction from the tip, and the elastic force of the notches is used to prevent the float-type molten metal from falling off. One end of the pipe is fitted into the hot water outlet from the inside of the hot water storage tank, and the retaining protrusion is engaged with the outer end surface of the hot water outlet. Just by pushing one end of the hot water pipe into the hot water outlet, it can be installed using elastic force, and
This provides a practical effect in that it can be prevented from coming off, and as a result, installation workability can be significantly improved with a small number of parts.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a part of a conventional natural circulation solar water heater, Fig. 2 is a vertical sectional view showing the installation structure of the hot water pipes of the water heater, and Fig. 3 is a cross-sectional view of a conventional natural circulation solar water heater. 4 is a sectional view taken along the line A-A' in FIG. 3; FIG. The figure is a sectional view taken along the line B-B' in FIG. 21... Heat collection part, 23... Hot water storage tank, 27... Hot water outlet, 28... Float type hot water guide pipe, 28a... One end, 28b... Other end, 29... Float, 3
3...Protrusion for retaining, 34...Notch.

Claims (1)

[Scope of utility model registration request] a heat collecting section, a hot water storage tank disposed in an inclined state above the heat collecting section, a hot water outlet provided at a lower part of a side wall of the hot water storage tank, one end connected to the hot water outlet, and a movable float-type molten metal guide pipe with a float provided at the other end, the outlet is formed integrally with the hot water storage tank, and a protrusion for preventing slippage is provided at the tip of one end of the float-type molten metal pipe. In addition to forming a plurality of notches in the axial direction from the tip,
The elastic force of the notch is used to fit one end of the float-type molten metal pipe into the spout from the inside of the hot water storage tank, and to engage the retaining protrusion with the outer end surface of the spout. solar water heater.