JPH07530Y2 - Water supply time adjustment device in hot water storage tank - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention automatically determines the hot water storage tank by automatically supplying tap water to the hot water storage tank with a ball tap provided inside the hot water storage tank such as a solar water heater. When the water level (constant water volume) is maintained, when the water level in the hot water storage tank drops, tap water is not immediately supplied to the hot water storage tank by the ball tap, but after a certain period of time, it automatically The present invention relates to a device for supplying tap water to a hot water storage tank.

(Prior Art) As shown in FIG. 7, in a hot water storage tank 8 of a conventional solar water heater or the like, a float 1a floating on the hot water storage surface, a connecting rod 1b fixed to the float 1a, and the float 1a. There is provided a ball tap 1 including a faucet 1c for supplying / stopping tap water W to / from the hot water storage tank 8 through the connecting rod 1b by the vertical movement of the tap.

When hot water is taken from the hot water storage chamber 8a of the hot water storage tank 8 through the hot water sampling pipe 9a, the water level in the water storage tank 8 is lowered by this hot water collection, the float 1a is lowered in conjunction with this, and the faucet 1c is lowered by the connecting rod 1b. Is opened and tap water W is supplied into the tap water supply chamber 8b of the hot water storage tank 8 through the water pipe 9b, and when the hot water storage tank 8 reaches the original constant water level (constant water volume), the float 1a rises and the faucet 1c closes. Therefore, the hot water storage tank 8 always keeps a constant water level. In FIG. 7, reference numeral 8c denotes a partition plate provided in the hot water storage tank 8 and separating the hot water storage chamber 8a and the tap water supply chamber 8b.

By the way, in such a conventional device, even if there is a partition plate 8b, the hot water in the hot water storage chamber 8a and the low-temperature water in the tap water supply chamber 8b are mixed with each other, and the hot water temperature in the hot water storage chamber 8a is time-consuming. It gradually decreased as time passed, and in many cases, the hot water in the hot water storage room 8a could not be used as hot water at the bathhouse.

Therefore, some methods have been considered for delaying the supply time of the tap water W to the hot water storage tank 8.

For example, in the device disclosed in Japanese Utility Model Publication No. 60-38840, the ball tap is kept closed until the water level in the hot water storage tank of the solar water heater falls below a certain level. This is because the connecting rod of the ball tap is penetrated through the key-shaped long hole, and the weight and spring attached to the plate with this long hole support the connecting rod at the horizontal portion of the long hole when the weight is submerged. When the weight is not submerged by the hot water, the plate rotates to lower the connecting rod, and the connecting rod opens the tap to supply tap water to the tap water supply chamber of the hot water storage tank. is there.

In the device shown in Japanese Utility Model Publication No. 58-29417, a water supply tank having pores is separately provided in the hot water storage tank, the float of the ball tap is floated in this water supply tank, and the water level in the hot water storage tank is suddenly increased by taking hot water. Even if it goes down, the water in the water supply tank flows out only a small amount from the pores,
After all, the faucet is to be opened after a certain period of time.

However, these devices have drawbacks in that the structure is complicated and the manufacture is not easy.

(Object of the Invention) The present invention solves the above-mentioned drawbacks and makes it possible to automatically supply water after the water supply to the hot water storage tank 8 by the ball tap 1 is suppressed for a certain time by a simple device.

(Outline of the Invention) In this invention, a water shutoff container 2 is separately provided in a hot water storage tank 8, and a float 1a of a ball tap 1 is floated in the water shutoff container 2.
Further, the water absorbing body 3 is attached to the water blocking container 2, one end 3a of the water absorbing body 3 is positioned inside the water blocking container 2 with the float 1a floating, and the other end 3b is hung outside the water blocking container 2. By lowering the water level in the container 2 over time, the water is not immediately supplied even if the water level in the hot water storage tank 8 is lowered.

(Embodiment of the Invention) As shown in FIG. 1, a water shutoff container 2 having an upper opening is separately provided in the hot water storage tank 8 (fixed to the faucet 1c portion), and the float 1a of the ball tap 1 is placed in this water shutoff container 2. The water absorbent body 3 is attached to the water shutoff container 2, and one end 3a of the water absorbent body 3 is floated.
Was positioned inside the water shutoff container 2, and the other end 3b was hung outside the water shutoff container 2.

This water stop container 2 is installed below the ball tap 1,
As shown in FIG. 2 and FIG. 3, the float 1a is moved up and down only by the change in the water level in the container 2, and the connecting rod 1b of the ball tap 1 controls the opening and closing of the faucet 1c. The upper end surface of the container 2 is set higher than the boundary water level p at which the faucet 1c opens and closes, and the water is stopped from the full state of the container 2 (second illustration) to this boundary water level p, and water is supplied at the water level below the boundary water level p. To set.

Therefore, in FIG. 2, the water is stopped, and in FIG. 3, the water is supplied. Then, in this device, water is gradually discharged from the container 2 to the outside by the siphon principle by using the water absorbing body 3 that causes the capillary phenomenon, and the decrease in the water level in the container 2 is slowed until the water absorbing state is reached to the water absorbing state. Slow down the time.
As a result, even if the water level in the hot water storage tank 8 is lowered, the water stop state by the ball tap 1 is maintained for a certain period of time, and for example, hot water that can be sufficiently used as hot water without being supplied during bathing is taken from the hot water storage tank 8. It becomes possible.

When the water level of the water shutoff container 2 is lowered by the water absorbing body 3 and the state shown in FIG. 3 is reached, water supply is started from the faucet 1c, the water level of the hot water storage tank 8 rises, and the hot water flows from above the water shutoff container 2 to the inside. The water-stop container 2 becomes full of water as shown in FIG. 2, and water supply from the faucet 1c is stopped.

The water absorbent body 3 may be, for example, cotton cloth, hemp string, vinyl string,
Glass fiber woven fabric or the like is used.

FIGS. 4 and 5 show another embodiment of the present invention, in which a water container 2 is a float receiver 2a for floating a float 1a of a ball tap 1 and an adjusting container 2b is shallower than the float receiver 2a.
It is divided into The upper end of the container 2 is aligned at the same height, the one end 3a of the water absorbent body 3 is located at the bottom of the float receiver 2a, and from there, through the horizontal portion 3c located at the height of the upper end of the container 2, the adjustment is performed. The abutment portion 3d that once comes into contact with the bottom of the container 2b, and then the horizontal portion 3e positioned at the height of the upper end of the container 2 again, the other end 3b goes out of the container 2 and the float receiver 2a. It is hung down to a position lower than the bottom.

The water in the float receiver 2a of the container 2 and the adjusting container 2b flows out to the outside through the water absorbing body 3.

FIG. 4 is a state diagram immediately after the hot water in the hot water storage tank 8 and the water shutoff container 2 are full and the hot water in the hot water storage tank 8 is used (collected) to lower the water level in the container 2. Float received at this point
Both 2a and the control container 2b are still full of water, and the ball tap 1
Is still in a water-stop state. From this point, water starts to flow out through the water absorber 3, but this outflow is initially performed only through the horizontal portion 3e, that is, the path from the adjusting container 2b to the outside, and then the water level in the adjusting container 2b decreases to some extent. Then, the outflow from the float receiver 2a via the horizontal portion 3c also starts. However, the outflow velocity via the horizontal portion 3c is much smaller than that of the horizontal portion 3e because the difference in water level is small, and the drop in water level in the float receiver 2a becomes extremely slow. Therefore, the water stop state by the ball tap 1 is maintained for a certain time.

Then, after a certain period of time, all the water in the control container 2b flows out to the outside and is emptied. From this point, the water outflow does not distinguish between the horizontal portions 3c and 3e, and the entire water absorbing body 3 is the same. It becomes the outflow speed and simply flows out from the float receiver 2a.

In this case, the outflow speed is higher than that in the horizontal portion 3c, and the water level of the float receiver 2a lowers faster than in the stopped state. As a result, the float 1a descends quickly and the faucet 1c quickly becomes fully open. Then, the water level in the float receiver 2a also reaches the boundary water level p, and the water supply from the faucet 1c to the hot water storage tank 8 starts. FIG. 5 shows the state at this time.

Even if the water level rises due to the water being supplied into the hot water storage tank 8 and the boundary water level p is reached, only a small amount of water will enter the float receiver 2a through the water absorber 3, so the float 1a will not move much and the faucet 1c will not move. Water supply will continue. And float receiving
When the water level of the hot water storage tank 8 reaches the upper end of 2a, water flows into the container 2 and becomes a full state, and the float 1a floats and becomes a water stopped state again.

The outflow rate through the water absorbent body 3 decreases as the path length increases. Therefore, by adjusting the length of the path of the horizontal portions 3c and 3e, the water level lowering speed changes and the water stop time can be changed.

FIG. 6 is a view showing the case where the water shutoff container 2 is attached to the hot water storage tank 8.

The faucet 1c of the ordinary ball tap 1 was passed through the central hole 4b of the U-shaped metal fixing plate 4 and tightened with a nut so as to be fixed.

The fixing plate 4 has a plurality of connecting holes 4a so that the connecting plate 7 and the end of the frame 5 can be aligned with the connecting holes 4a having a proper height and bolt nuts can be tightened. The frame 5 is a metal L-shaped angle with a long hole and bolts and nuts so that the water blocking container 2 can be placed and fixed at an appropriate position. For fine adjustment of the height, a spacer is sandwiched between the frame 5 and the water blocking container 2.

The water-stopping container 2 is formed by dividing a shallow rectangular parallelepiped container into two, one of which is a float receiver 2a having a semi-oval bottom and the other of which is a control container 2b provided with a ladder-like cloth stopper 2c.

Then, a cotton cloth, a hemp string, a vinyl string or the like is used for the water absorbent body 3, and the water absorbent body 3 is alternately passed through the cloth stopper 2c so as to be knitted up and down, and once hung on the bottom of the adjustment container 2b at an appropriate position, the contact portion. 3d and knit again with cloth stopper 2 and the other end
3b was hung outside.

The adjusting container 2c has a depth of 5 mm, a length of 80 mm, and a width of 100 mm, and the water absorber 3 is a cotton cloth of 80 mm in width, and the cloth stopper 2c
As a result of conducting experiments with the lengths of the parts attached to each being 80 mm, the water-stop state was maintained for about 2 hours, and after the start of the water supply, the water level dropped quickly and the ball taps were fully opened in a short time.

In the embodiment, the number of adjusting containers 2b is one, but a plurality of adjusting containers 2b may be provided to prolong the water stop time. Although the water absorbent body 3 may be located above the water shutoff container 2, it is better to be constantly exposed to fresh water by circulating the water in the hot water storage tank in a immersed state when the water absorption capacity is drastic because the water absorption power changes significantly with time. In this sense, if the heights are the same, a part of the container may be out of the control container 2b. Further, if the water absorbing body 3 has a large water absorbing force from the bottom to the edge of the container, it is possible to mitigate the gradual decrease in the outflow rate due to the decrease in water level.

(Effect of the Invention) As described above, according to the present invention, the water supply container is provided with a water-stop container and the water-absorbing body is attached to the water-stop container to keep the water supply to the hot-water tank constant. This has the effect of suppressing time.

[Brief description of drawings]

FIG. 1 is a sectional view of a hot water storage tank in which the device according to the present invention is implemented, FIGS. 2 and 3 are sectional views of an embodiment of the device according to the present invention, and FIGS. 4 and 5 are of the device according to the present invention. FIG. 6 is a cross-sectional view of another embodiment, FIG. 6 is an exploded perspective view of a case where a water shut-off container is attached to a hot water storage tank, and FIG. 1 ... Ball tap, 1a ... Float, 1b ... Connecting rod,
1c ... faucet, 2 ... still water container, 2a ... float receiver, 2b ...
… Adjusting container, 2c… Cloth stopper, 3… Water absorber, 4… Fixing plate, 4a… Connection hole, 5… Frame, 5a… Fixing long hole, 6… Container fixing bolt and nut , 7 ... Connecting plate

Claims (1)

[Scope of utility model registration request] 1. A water shutoff container 2 is provided in a hot water storage tank 8, a float 1a of a ball tap 1 is floated in the water shutoff container 2, and the float 1a moves up and down due to a change in water level of the water shutoff container 2. Water is supplied to the hot water storage tank 8 and water is stopped, the water absorbent body 3 is attached to the water absorbent container 2, and one end 3a of the water absorbent body 3 is positioned inside the water absorbent container 2. The other end portion 3b of the water is suspended outside the water shutoff container 2, and the siphon principle of the water absorbent body 3 causes the water in the water shutoff container 2 to flow out to the water level of the water shutoff container 2. A device for adjusting the water supply time in a hot water storage tank, which is characterized by being changed.