JPS6334384B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar water heater, in which an upper hot water supply pipe 2 and a lower hot water supply pipe 3 connected to the upper and lower parts of a hot water storage tank 1, respectively, are connected to a hot water supply pipe 5 connected to a hot water faucet 4. , a water supply pipe 6 is connected to the hot water storage tank 1, and a fluid pressure operating means A that operates by the fluid pressure from the water supply is provided in a part of the water supply pipe 6, and when the fluid pressure operating means A is operated by the fluid pressure from the water supply. The upper hot water supply communication port 7 of the upper hot water supply pipe 2 to the hot water supply pipe 5 is opened, and the lower hot water supply communication port 8 of the lower hot water supply pipe 3 to the hot water supply pipe 5 is closed, and the fluid pressure operating means A
The hot water supply pipe 5 is provided with a valve mechanism B that closes the upper hot water supply communication port 7 and opens the lower hot water supply communication port 8 when the fluid pressure operating means A does not operate.
is formed by a flow switch 13 provided in the water supply pipe 6, and a valve mechanism B is operated by turning the flow switch 13 on and off to switchably open and close the upper hot water supply communication port 7 and the lower hot water supply communication port 8. The present invention relates to a solar water heater characterized in that it is formed of 14.

A solar water heater is formed as shown in Fig. 1 by a heat collection tank 21 that collects solar heat and a hot water storage tank 1 that stores hot water heated by the heat collection tank 21, and is installed on a rooftop or the like. In this case, an upper hot water supply pipe 2 and a lower hot water supply pipe 3 are connected to the upper and lower parts of the hot water storage tank 1, respectively, and the upper and lower hot water supply pipes 2 and 3 are connected to a hot water supply pipe 5 having a hot water faucet 4. be. In this type of solar water heater, the hot water tank 1 is connected to the upper hot water pipe 2.
When taking out the hot water inside, close the hot water supply valve 22 provided in the lower hot water supply pipe 3 and open the water supply valve 23 of the water supply pipe 6 connected to the hot water tank 1. The water level is raised to overflow, the hot water is allowed to flow into the upper hot water supply pipe 2, and hot water is taken from the hot water supply faucet 4. In this way, hot water comes out at first, but then a mixture of hot water and cold water comes out, making it possible to use more hot water than the capacity of the hot water storage tank 1. In addition, if you want to use only hot water or drain the water from the hot water tank 1 to prevent water from corroding, the hot water in the hot water tank 1 is taken out from the lower hot water supply pipe 3. In this case, the water supply valve 23 It is necessary to close the water supply valve 22 and open the hot water supply valve 22. In this way, conventionally, the upper hot water supply pipe 2 and the lower hot water supply pipe 3 are connected to the hot water storage tank 1, respectively.
When taking out the hot water, it is necessary to open and close the hot water supply valve 22 and the water supply valve 23, respectively, which makes operating the valves troublesome and there is a risk of making mistakes in each operation.

The present invention has been made in view of the above points, and utilizes solar heat to automatically change the hot water supply system between the upper hot water supply pipe and the lower hot water supply pipe and use hot water by simply operating the water supply valve. The purpose is to provide water heaters.

The present invention will be explained in detail below with reference to Examples. FIG. 2 shows a schematic configuration of an embodiment of the present invention. An upper hot water supply pipe 2 and a lower hot water supply pipe 3 are connected to the upper and lower parts of the hot water storage tank 1, respectively. , 3 are connected to the hot water supply pipe 5. A hot water faucet 4 is provided at the tip of the hot water pipe 5. Further, the water supply pipe 6 is connected to the hot water storage tank 1 via a water supply device 25 having a ball tap 24. A part of the water supply pipe 6 is provided with a fluid pressure operating means A that operates with fluid pressure from water supply.
is constituted by a flow switch 13. As shown in FIG. 3, the flow switch 13 includes a guide rod 32 disposed inside the water supply pipe 6, a slider 33 containing a magnet slidably attached to the guide rod 32, and a fixed contact 34 connected to a power source. It is formed of a switch section 43 composed of a movable contact 35 connected to the valve mechanism B. Incidentally, the water supply pipe 6 is provided with a sloped portion 44 at the part where the flow switch 13 is provided, and even when the slider 33 of the flow switch 13 is not operated, there is a gap 45 between the slider 33 and the water supply pipe 6. is formed so that the water in the water supply pipe 6 can be easily drained to prevent freezing in winter. Further, when the fluid pressure operating means A is activated by the fluid pressure caused by water supply, it opens the upper hot water supply communication port 7 of the upper hot water supply pipe 2 to the hot water supply pipe 5, and also opens the lower hot water supply communication port 7 of the lower hot water supply pipe 3 to the hot water supply pipe 5. The hot water supply pipe 5 is provided with a valve mechanism B that closes the pipe communication port 8 and closes the upper hot water supply communication port 7 and opens the lower hot water supply communication port 8 when the fluid pressure operating means A does not operate. . The valve mechanism B is formed by an electromagnetic valve 14. As shown in FIG. 4, the electromagnetic valve 14 includes a switching valve 36, a movable magnetic plate 39 that can slide freely within a cylinder 38 attached to the switching valve 36 via a connecting rod 37, and a movable magnetic plate 39 that can be freely attracted to the switching valve 36. A power line 41 and a lead wire 42 connected to the flow switch 13 are connected to the electromagnet 40.

However, when the water supply valve 23 is closed in this case, the slider 33 of the flow switch 13 does not move because there is no flow of water in the hot water supply pipe 5 and remains in the state shown in FIG. 43 is turned off. When the flow switch 13 is off, the electromagnet 40 of the electromagnetic valve 14 is not energized, and the spring 46 closes the switching valve 36 as shown in FIG. 4a.
is pushed, and the upper hot water supply communication port 7 is closed by the switching valve 36, and the lower hot water supply communication port 8 is opened.
Therefore, when the hot water supply faucet 4 is opened, hot water in the hot water storage tank 1 can be taken out from the lower hot water supply pipe 3. Next, when the water supply valve 23 is opened to supply water to the hot water tank 1, the flow of water in the water supply pipe 6 pushes up the slider 33 of the flow switch 13 as shown in FIG. 3b and approaches the switch section 43. However, the movable contact 35 is attracted by the magnet in the slider 33 and comes into contact with the fixed contact 34, and the flow switch 13 is turned on. When the flow switch 13 is turned on, the electromagnet 40 of the electromagnetic valve 14 is excited, and the movable magnetic plate 39 is attracted to the electromagnet 40 against the spring 46 as shown in FIG. 4b, causing the movement of the movable magnetic plate 37. Along with this, the switching valve 36 also moves, and the upper hot water supply communication port 7 opens and the lower hot water supply communication port 8 is closed by the switching valve 36. Therefore, when the hot water faucet 4 is opened, hot water can be drawn from the hot water storage tank 1 through the lower hot water supply communication port 8. Also,
Open the water supply valve 23 when the hot water tank 1 is full,
When you open the hot water faucet 4, hot water initially comes out from the lower hot water pipe 3, but when the water level in the hot water tank 1 drops, water flows from the water supply pipe 6 to the hot water tank 1 by the action of the ball tap 24, so the flow switch 13 and the electromagnetic valve are activated. 14 is activated, and hot water now comes out from the upper hot water supply pipe 2. When the hot water faucet 4 is closed and the water level in the hot water storage tank 1 rises again, the original state returns.

In the present invention, the water supply valve 23 is installed in the bathroom or the like.
If you install a water supply pipe in several places (for example, kitchen, bath, water heater, etc.), you can freely operate the water supply valve while taking a bath. By simply operating 23, hot water can be supplied from the upper hot water supply pipe 2 or hot water from the lower hot water supply pipe 3.

As described above, in the present invention, the opening and closing of the upper hot water supply communication port and the lower hot water supply communication port can be automatically switched by operating the water supply valve by the action of the fluid pressure operating means and the valve mechanism. With simple operations, you can take out hot water from the upper hot water pipe or from the lower hot water pipe. Moreover, the fluid pressure operating means is formed by a flow switch installed in the water supply pipe, and the valve mechanism is an electromagnetic valve that is operated by turning the flow switch on and off to freely switch between the upper and lower hot water supply communication ports to open and close them. Because of this, the fluid pressure operating means can be placed at any position on the water supply pipe, regardless of the location where the valve mechanism of the hot water supply pipe is installed, and the valve mechanism can be mechanically operated directly by the fluid pressure operating means. There is no need to locate the fluid pressure operating means next to the valve mechanism, and there is no need to extend the water supply pipe next to the valve mechanism.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the conventional example, FIG. 2 is a front view of the present invention, FIGS. 3 a and b are sectional views of the main parts of the same, and FIG.
Figures a and b are sectional views of other important parts of the same as above. 1 is a hot water storage tank, 2 is an upper hot water supply pipe, 3 is a lower hot water supply pipe, 4 is a hot water supply faucet, 5 is a hot water supply pipe, 6 is a water supply pipe, 7
is the upper hot water supply communication port, 8 is the lower hot water supply communication port, 1
3 is a flow switch, and 14 is an electromagnetic valve.

Claims (1)

[Claims] 1. Connect the upper and lower hot water pipes connected to the upper and lower parts of the hot water tank, respectively, to the hot water pipe connected to the hot water faucet, and also connect the water pipe to the hot water tank, and apply fluid pressure due to water supply to a part of the water pipe. A fluid pressure actuating means is provided which operates by the fluid pressure from the water supply, and when the fluid pressure actuating means is actuated by the fluid pressure from the water supply, the upper hot water supply communication port to the hot water supply pipe of the upper hot water supply pipe is opened and the communication port for the upper hot water supply to the hot water supply pipe of the lower hot water supply pipe is opened. The hot water supply pipe is provided with a valve mechanism that closes the lower hot water supply pipe communication port, and closes the upper hot water supply communication port and opens the lower hot water supply communication port when the fluid pressure actuation means does not operate. The means is formed by a flow switch provided in the water supply pipe, and the valve mechanism is formed by an electromagnetic valve that is operated by turning the flow switch on and off to switchably open and close the upper hot water supply communication port and the lower hot water supply communication port. A solar water heater characterized by: