JPS60162154A - Solar water heater - Google Patents

Abstract

PURPOSE:To enable to perform easily fixed temperature control of the temperature of water in a hot water storage tank with a device whose mechamisn and operation are simple, by forming a long hole extending in an axial direction of a pipe on one side of a double pipe in the hot water storage tank and a spiral long hole is formed on the other side of the same. CONSTITUTION:An inner pipe 13a of a double pipe 13 is built in the double pipe 13 under a state wherein an opening of the inner pipe 13a is put upon a water leading opening 14 formed on the bottom of a hot water storage tank 12, and an outer pipe 13b is fitted over rotatably the inner pipe 13a in its circumferential direction. Then an operation knob 15 is provided on the upper end of the outer pipe 13b. A long hole 17 extending in an axial direction of the inner pipe 13a is formed on the inner pipe 13a and a spiral long hole 18 is formed on the outer pipe 13b. As for the dual pipe 13. a water supply opening 19 to be formed on a mating part between the spiral long hole 18 of the outer pipe 13b and the long hole 17 of the inner pipe 13a can be moved in the vertical direction continously by mating those long holes 18, 17 at a position of an appropriate height with each other by turning the outer pipe 13b in the circumferential direction by operating a knob 15. With this construction, effective capacity in the hot water storage tank 12 can be varied continuously by making a quantity of a dead water layer 20 vary continously, through which fixed temperature control of the temperature of water in the hot water storage tank can be performed quite easily.

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to a solar water heater.

(Background Art) In general, a solar water heater has a structure as shown in Figs. The conduit section of the heat collector 3 housed in the heat collector case 3a is communicated with the water conduit pipe 2 (1), and the hot water intake port 4a formed at the bottom of the hot water storage tank 1 is connected to the heat collector 3. It had a structure in which the heat collecting part 3b and the hot water sampling pipe 4 communicated with each other.The ball tap 5 had a lever 7 attached to the water supply nozzle 6, and a float 8 was attached to the tip of the lever 7, so that the hot water could be stored. The amount of water supplied from the water supply nozzle 6 into the tank 1 is controlled.In this configuration, the water supplied from the water supply nozzle 6 into the hot water storage tank 1 passes through the water conduit 2 and enters the heat collector 3, where it is collected. The temperature is raised in the heat collection part 3b of the heater 3 and returned to the hot water storage tank 1 through the hot water sampling pipe 4.However, in a solar heat collector with such a structure, the effective volume of the hot water storage tank 1 is Since it cannot be changed, there has been a problem that the temperature of the water in the water storage tank 1 becomes low when the amount of sunlight irradiation is low, such as during cloudy or rainy days.Therefore, in order to solve this problem, A solar water heater with a structure as shown in Fig. 3 was developed.In Fig. 3, the first part of the hot water storage tank is shown in a sectional view from the front, and the third part of the heat collector is shown in a plan view. In this solar water heater, a branch pipe 9 is branched from the water conduit 2, and the (2) upper end 9a of the branch pipe 9 is positioned on one side -1 from the bottom of the hot water storage tank 1.
In addition, a valve 10 is provided in the water conduit 2 and the branch pipe 9, and the upper end of the hot water sampling pipe 4 is extended in one direction from the - end of the branch pipe 9 of the water conduit 2. With this configuration, water is supplied from the water conduit 2 to the heat collector 3 for fortune telling when there is a lot of sunlight irradiation, and on cloudy or rainy days when the amount of sunlight irradiation is low, water is supplied from the branch pipe 9 to the heat collector 3. 3. Becomes able to supply water to 3. Generally, in a hot water storage tank, water located below the opening 11 of the water conduit 2 or the branch pipe 9 becomes dead water (water that does not flow) and is not sucked into the water conduit 2 or the branch pipe 9.

Therefore, as shown in -1-, by varying the height position of the opening I of the water conduit 2 or the branch pipe 9, the amount of dead water layer can be changed, thereby increasing the effective volume of the hot water storage tank 1. (maximum water storage capacity of the hot water tank minus the volume of the dead water layer). For example, if water is taken from the water pipe 2 on sunny days, a dead water layer will not form, and the effective volume of the hot water tank 1 will increase, increasing the temperature of a large amount of water, and branching off on rainy days. If water is taken from the pipe 9 (3), the portion of water located below the upper end opening 9a of the branch pipe 9 becomes a dead water layer 11 as shown in Fig. 4, so the effective volume of the hot water storage tank 1 becomes small. A small amount of water? MA will be performed. Therefore, regardless of whether it is sunny or rainy,
The temperature of the water in the hot water tank 1 can be raised fairly appropriately.

Furthermore, in order to further finely change the effective volume within the hot water storage tank 1 and thereby enable more precise temperature control, it is also practiced to provide one more branch pipe 9 as shown in FIG.

U7, as in the above two examples, the water conduit 2 and branch pipe 9
Providing a valve 10 and controlling the flow path of each valve 10 has caused problems such as a complicated and expensive mechanism and complicated valve opening/closing operations. Furthermore, even if the branch pipes 9 are installed in a double-layered manner, the effective volume in the hot water storage tank 1 can only be changed in stages, and cannot be changed continuously. Problems such as difficulty in control also arose.

[Purpose of the invention]

An object of the present invention is to provide a solar water heater that has a simple mechanism and operation, and allows easy quantitative control of the water temperature in the hot water storage tank (4).

[Disclosure of the invention]

In this invention, one pipe of the double pipe is installed in a hot water storage tank with one end opening of the double pipe aligned with the water conduit [1] at the bottom of the hot water storage tank, and the other pipe is installed in a circle around this one pipe. The tube is fitted so as to be rotatable in the circumferential direction, and one of the one and the other tubes has an elongated portion extending in the axial direction of the tube, and the other tube has a spiral elongated portion formed therein. Its gist is solar water heaters.

Next, the present invention will be explained in detail based on examples.

FIG. 6 is an explanatory diagram of embodiments of the present invention.

In the figure, the heat collector is shown in a plan view, and the hot water storage tank is shown in a sectional view seen from the front. That is, in this solar water heater, the inner pipe 13a of the double pipe I3 is placed in the hot water tank 12, and one end opening of the double pipe I3 is aligned with the water inlet 14 formed at the bottom of the hot water tank 2. The outer tube 13b is fitted onto the inner tube 13a so as to be rotatable in the circumferential direction (5). Then, a double operation knob 15 is provided on the outer tube 131), and this operation knob 15 is
is positioned on the outer peripheral surface of the second part of the hot water storage tank 12, and the upper end of the hot water sampling pipe 16 is positioned at the upper part of the hot water storage tank 12. More specifically, the inner tube 13a is formed with a long hole 17 extending in the axial direction of the tube, as shown in FIG.
A spiral long hole 18 is formed in the outer tube 13b. That is, as shown in FIG. 8, for example, the outer tube 13b is constructed by winding a rectangular plate-like body in which an elongated portion 18 is formed diagonally around the outer peripheral surface of the inner tube 13a. FIG. 9 shows a state in which the inner tube 13a and outer tube 13b are combined. This double tube 13 is made by rotating the outer tube 13b in the circumferential direction by operating the knob 15, and rotating the outer tube 13b in the spiral long hole 1.
8 and the long hole 17 of the inner tube 13a at an appropriate height position, the water supply port 19 formed at the matching portion can be moved continuously in the vertical direction. It has become.

In this solar water heater, the water supply port 19 can be continuously moved in the vertical direction of the hot water tank 12 by operating the knob 15 of the outer tube 13b (6) in a double-like manner.

Therefore, in FIG. 6, the dead water layer 20 indicated by diagonal lines
It becomes possible to continuously increase and decrease the effective volume in the hot water storage tank 12 by increasing and decreasing the capacity of the hot water storage tank 12 continuously.

Figure 10 shows how the solar system automatically changes in the evening (tube 1) depending on the amount of sunlight irradiation.
3b is rotated by 1° to position the water supply port 19 at an appropriate height. FIG.

In the figure, a double pipe 13 consisting of a first pipe 13b and an inner pipe 13a is supported by support stands 21 provided at the top and bottom of the hot water storage tank 12. One end of a spring 22 is fixed to the lower end of the I-pipe 13b in a half-circular state. The other end of the spring 22 is supported by a support rod 23. This spring 22 acts to constantly rotate the outer tube 13t+ in the direction of arrow A, as shown in FIG. In addition, a rotation control spring 25 formed by connecting a plurality of shape memory alloy springs 24 has one end fixed to the second part of the hot water tank 2, and the other end rotated half a turn to the lower part of the outer pipe 13b via a pulley 26. (7) It is installed and fixed in the closed position. 27 is a support rod that supports the pulley. This rotation control spring 25 acts to rotate the outer tube 13b in the direction of arrow B as shown in FIG. 11, and is balanced with the spring force of the spring 22 at room temperature. The outer tube 13b has a U-shaped old man 18 and the inner tube 1.
The water supply port 19 formed by the matching portion of the elongated hole 17 extending in the axial direction of 3a is set to be located above the hot water storage tank 12 in the initial state.

In this configuration, the water temperature in the hot water storage tank 12 does not rise;
When tightened, the rise is performed from the top of the hot water storage tank 12, so the shape memory alloy spring 24 of the rotation control spring 25 located in the second part of the hot water storage tank 12 deforms to overcome the rotational force of the spring 22. As a result, the outer tube 13)) rotates, so the water supply port 19 moves downward. As a result, hot water tank 12
The effective volume inside increases. Furthermore, when the amount of solar irradiation increases and the water temperature in the hot water storage tank 12 becomes even higher, the lower spring 24' of the shape memory alloy spring 24 deforms, and this deformation causes the outer tube 13b to further rotate ( 8) As a result, the position of the water supply port I9 is further lowered. In this way, the effective volume within the hot water storage tank 12 is automatically adjusted according to the amount of sunlight irradiation, so that water at a constant temperature can be obtained at all times.

In addition, in the above embodiment, the spiral elongated hole 18 is formed in the outer tube 13b.
Although the elongated hole 17 extending in the axial direction is formed in the inner tube 13a, they may be formed in the opposite direction.

〔Effect of the invention〕

As described above, in the solar water heater of the present invention, one of the double pipes is installed in the hot water storage tank with one end opening of the double pipe aligned with the water inlet at the bottom of the hot water storage tank, and the other A tube is fitted into one of the tubes so as to be rotatable in the circumferential direction, and an elongated portion extending in the axial direction of the tube is formed in one of the one and the other tubes, and a spirally elongated portion is formed in the other tube. Because of this,
By rotating one pipe, the water supply port formed at the joint between the long length of one pipe and the spiral length of the other pipe can be continuously moved in the vertical direction of the hot water storage tank. Therefore, the effective volume (9) in the hot water storage tank can be changed continuously, thereby making it possible to extremely easily control the water temperature in the hot water storage tank. In addition, as mentioned above, the double pipe has an extremely simple structure,
Since there is no need to open and close valves like in the past, solar water heaters are cheaper and easier to operate.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional example, Fig. 2 is a configuration diagram thereof, Fig. 3 is a configuration diagram of a modified example thereof, Fig. 4 is an explanatory diagram of its operation, and Fig. 5
Figure 6 is a configuration diagram of another modification, Figure 6 is a configuration diagram of an embodiment of the present invention, Figure 7 is an exploded explanatory diagram of a double tube, Figure 8 is an exploded view of the outer tube, and Figure 9 is a configuration diagram of an embodiment of the present invention. FIG. 10 is a perspective view of a double pipe, FIG. 10 is a configuration diagram of a main part of another embodiment of the present invention, and FIG. 11 is an explanatory diagram of its operation. 3... Heat collector 12... Hot water storage tank 13... Double pipe 13a... Inner pipe 13b... Outer pipe 14... Water inlet 16... Heat collecting device ]7... Long hole 18...Spiral-like long agent Patent attorney Takehiko Matsumoto (10) - Yo dry - system Rokune city 1 - EE-i field: (spontaneous) 2゜ Name of invention Sun; Crystal water vessel 3 , Relationship with the five cases to be amended Special, 1'] Applicant's address Jingan 11゛1mon pr Yamainu Umon Vguchi () 48 Rule name (5 old) Matsucho 71i1 Stock Co., Ltd. 1 representative Representative Director Iku Kobayashi 4, Agent 6, Specification Subject to Amendment 7, Contents of Amendment (1) Page 3, Line 5 of the Specification] - Consisting of 1 and 1 -
During sunlight - 1, by operation of 1 half IO/), 1
Insert. (2) No. 9j for details! + 1 in the 8th line... You may do this. Insert the name of the sentence in F after 1]. -""l;L-- If you use the IIj tube shown in Figs. 12 to 14,
It is possible to move the water supply port almost continuously in the vertical direction. The 18th city pipe shown in FIG. 12 has a plurality of holes 11111 arranged in a spiral shape starting from a round hole 28, and an elongated hole 30 extending in the axial direction.1. : inner tube 2!] b, and the single tube shown in FIG.
a, and has an inner tube 32b with a plurality of round holes 33 along the axial direction, as shown in FIG. 2 Shown 1 1 times 1
Snake, the thin hole 34 extending in the circumferential direction is 11! There are multiple pipes 35a and long holes 36 extending in the axial direction.
It has an inner pipe 351) with installation number J. Outer tubes 29a, 32
a , :35 a (7) The operating knob 15 is dialed down at one end. In the case of the two-wheeled pipe (with this one), the water supply 1-1 is where the holes in the inner and outer pipes match. Therefore, when inserted inside either the inner tube or the outer tube, operate the knob to move the outer tube in the circumferential direction ζ.
If you turn it twice, you can move the water inlet one turn downwards continuously. (:() 1 for [-Explanatory drawings] on page 3, line 14 of the specification)
12 to 14 are exploded explanatory views of duality in which the water supply port can be moved almost continuously in the upward F direction.'' (Re-rod 1zA-7γ I'A-E X□'tie
,,w c bsd kao (3゜Fig. 12OFig. 13 8 29a °2 old 31 ,-:Fig. 14S1, 32a 30 ゛3P''' 9b

Claims (1)

[Claims] (11 In the hot water storage tank, one pipe of the double pipe is installed with one end opening of the double pipe aligned with the water inlet at the bottom of the hot water storage tank, and the other pipe is attached to this one pipe in the circumferential direction.) A solar hot water system which is rotatably fitted and is characterized in that one of the one and the other tubes has an elongated hole extending in the axial direction of the tube, and the other tube has an elongated spiral hole. vessel.