JP7162256B2 - Electrolyzed water generator - Google Patents

Description

The present invention relates to an electrolyzed water generator.

BACKGROUND ART Conventionally, an electrolyzed water generator provided with a backflow prevention tank is known (for example, Patent Literature 1).

When the electrolyzed water generator is used in the kitchen, most parts of the electrolyzed water generator, including the anti-backflow tank, are generally placed under the sink.

In such an electrolyzed water generator, when the water level inside the backflow prevention tank rises above the overflow port, the air in the internal space (edge cut space) above the overflow port in the backflow prevention tank is Compressed. As a result, the air pressure in the internal space above the overflow port in the backflow prevention tank rises, pushing up the water in the overflow channel connected to the overflow port, and promoting the drainage to the outside of the backflow prevention tank.

JP 2015-192967 A

In order to increase the air pressure in the internal space above the overflow port in the backflow prevention tank so that the water in the overflow channel is pushed up, the water level inside the backflow prevention tank must be kept above the overflow port. must be raised to position. Therefore, depending on the volume of the internal space above the overflow port in the backflow prevention tank, the water stored inside the backflow prevention tank may come into contact with the water supply port.

The present invention has been made in view of such problems of the prior art. It is another object of the present invention to provide an electrolyzed water generator that more reliably prevents water stored inside a backflow prevention tank from coming into contact with a water supply port.

In order to solve the above problems, an electrolyzed water generating apparatus according to an aspect of the present invention includes an electrolyzed water generating mechanism that generates electrolyzed water, and an electrolyzed water generating mechanism that is upstream of the electrolyzed water generating mechanism or integrated with the electrolyzed water generating mechanism. and a backflow prevention tank for preventing backflow. The anti-backflow tank has an upper tank portion and a lower tank portion. The upper tank portion includes an upper top surface that constitutes the top surface of the backflow prevention tank, an upper peripheral surface that is continuous with the upper top surface, an upper bottom surface that is at least partially an opening surface, and the upper top surface and the upper peripheral surface. It has a water supply port formed in either. The lower tank portion includes a lower bottom surface forming the bottom surface of the backflow prevention tank, a lower peripheral surface connected to the lower bottom surface, a spout formed in either the lower bottom surface or the lower peripheral surface, and formed in the lower peripheral surface. and an overflow port. The overflow port overlaps the interface between the upper peripheral surface of the upper tank portion and the lower peripheral surface of the lower tank portion. The horizontal area of the space enclosed by the upper peripheral surface in the upper tank portion is smaller than the horizontal area of the upper bottom surface in the upper tank portion.

According to the present disclosure, it is possible to provide an electrolyzed water generator that more reliably prevents water stored inside a backflow prevention tank from coming into contact with a water supply port.

It is a perspective view which shows typically the principal part of the electrolyzed water generator which concerns on this embodiment. It is a block diagram which shows typically the principal part of the electrolyzed water generator which concerns on this embodiment. FIG. 3 is an explanatory view when the backflow prevention tank shown in FIG. 2 overflows; FIG. 10 is an explanatory view of a backflow prevention tank according to a conventional example when it overflows;

The present embodiment will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2 , the electrolyzed water generator 10 includes an electrolyzed water generator 11 and a backflow prevention tank 12 .

The electrolyzed water generating mechanism 11 is also called an ozone device, and is for generating electrolyzed water from supplied water. Since the electrolyzed water generating mechanism 11 may have a known structure, detailed description of the electrolyzed water generating mechanism 11 is omitted.

The backflow prevention tank 12 is for preventing backflow of water to the water supply port 13 side. The backflow prevention tank 12 is arranged upstream of the electrolyzed water generating mechanism 11 . In addition, unlike the present embodiment, the backflow prevention tank 12 may be arranged integrally so as to include the electrolyzed water generating mechanism 11 therein.

The anti-backflow tank 12 has an upper tank portion 14 and a lower tank portion 15 .

A water supply channel 16 is connected to the upper tank portion 14 , and a discharge channel 17 and an overflow channel 18 are connected to the lower tank portion 15 .

The upper tank portion 14 constitutes the upper portion of the anti-backflow tank 12 .

The upper tank portion 14 stores air having a constant air pressure in order to allow the water stored in the lower tank portion 15 to flow into the overflow passage 18 when water continues to be supplied from the water supply port 13 due to some abnormality. do.

The upper tank portion 14 is formed in a thin disc shape and has an upper top surface 19 that constitutes the top surface of the backflow prevention tank 12 . Although the upper top surface 19 is formed in a flat shape in this embodiment, it is not limited to this, and may be formed in a curved surface shape that protrudes upward.

The upper tank portion 14 is formed in the shape of a thin disc, and has an upper bottom surface, which is an opening surface in which at least a portion is open. and an upper peripheral surface 20 contiguous with the outer edge of the. The upper peripheral surface 20 is formed in a thin cylindrical shape.

As shown in FIG. 2, the upper bottom surface in this embodiment is entirely open and has no substance. In addition, when there is a substance, the upper bottom surface may be formed in a planar shape or may be formed in a curved shape.

The space surrounded by the upper peripheral surface 20 in this embodiment is formed in a truncated cone shape, as shown in FIG. That is, as shown in FIG. 1, the horizontal area A of the space surrounded by the upper peripheral surface 20 in the upper tank portion 14 decreases from bottom to top.

Although the water supply port 13 is formed on the upper ceiling surface 19 in this embodiment, it is not limited to this and may be formed on the upper peripheral surface 20 . A water supply passage 16 is connected to the water supply port 13 , and an on-off valve 21 is arranged in the water supply passage 16 . As the on-off valve 21, for example, a normally closed solenoid valve can be used.

A weir 22 is arranged inside the upper tank portion 14 between the water inlet 13 and the upper bottom surface. That is, the weir 22 is arranged below the water supply port 13 inside the upper tank portion 14 . The weir 22 is, for example, a rib formed on the inner surface of the upper top surface 19 or the upper peripheral surface 20 .

The weir 22 is preferably positioned at a height of 50% or more of the height of the upper tank section 14 . In this embodiment, the weir 22 is positioned at 50% of the height of the upper tank section 14 .

The lower tank portion 15 constitutes the lower portion of the backflow prevention tank 12 .

The lower tank portion 15 normally discharges the water stored inside the backflow prevention tank 12 from the spout 23 to the water discharge passage 17, and in the event of some abnormality, the water stored inside the backflow prevention tank 12 overflows. The outlet 24 discharges into the overflow channel 18 .

The lower tank portion 15 is formed in the shape of a thin disk and has a lower bottom surface 25 that constitutes the bottom surface of the backflow prevention tank 12 . Although the lower bottom surface 25 is formed in a flat shape in this embodiment, it is not limited to this, and may be formed in a curved surface shape that protrudes downward.

The lower tank portion 15 is formed in the shape of a thin disk, and has a lower top surface which is an opening surface in which at least a portion is open, a lower end portion which is connected to the outer edge portion of the lower bottom surface 25, and an upper end portion which is connected to the lower top surface. and a lower peripheral surface 26 contiguous with the outer edge of the surface. The lower peripheral surface 26 is formed in a thin cylindrical shape.

As shown in FIG. 2, the lower top surface of the present embodiment is entirely open and has no substance. In addition, the lower top surface when there is an entity may be formed in a planar shape or may be formed in a curved shape.

The space surrounded by the lower peripheral surface 26 is formed in a cylindrical shape as shown in FIG. That is, as shown in FIG. 1, the horizontal area C of the space surrounded by the lower peripheral surface 26 in the lower tank portion 15 is constant from the lower bottom surface to the lower top surface (boundary surface 27).

Although the spout 23 is formed on the lower bottom surface 25 in this embodiment, it is not limited to this and may be formed on the lower peripheral surface 26 . A water discharge passage 17 is connected to the water discharge port 23. The water discharge passage 17 includes, in order from the upstream side, a pump 28 for water supply, a check valve (non-return valve) 29, an electrolyzed water generation mechanism (an ozone device). ) 11 are arranged.

An overflow hole 24 is formed in the lower peripheral surface 26 . The overflow port 24 is provided in the lower tank portion 15 so as to partially overlap the lower top surface and the lower bottom surface. That is, as shown in FIG. 2, the overflow port 24 is formed in the lower tank portion 15 so that a portion thereof overlaps the boundary surface 27 between the upper peripheral surface 20 of the upper tank portion 14 and the lower peripheral surface 26 of the lower tank portion 15. be provided. In this embodiment, the uppermost edge 24a of the overflow port 24 overlaps the interface 27 between the upper peripheral surface 20 of the upper tank portion 14 and the lower peripheral surface 26 of the lower tank portion 15, as shown in FIG. It is provided in the tank part 15 . An overflow channel 18 is connected to the overflow port 24 .

A water supply stop sensor 30 and a water supply sensor 31 are arranged inside the space surrounded by the lower peripheral surface 26 . Inside the space surrounded by the lower peripheral surface 26, a water supply stop sensor 30 and a water supply sensor 31 are arranged in order from the higher position.

The water supply stop sensor 30 detects the presence of water and sends a signal for closing the water supply port 13 (on-off valve 21) to the controller (processor) 32 shown in FIG. Further, the water supply sensor 31 transmits a signal for opening the water supply port 13 (on-off valve 21) to the control unit 32 shown in FIG. 2 by detecting the absence of water. Signals from the water supply stop sensor 30 and the water supply sensor 31 are sent to the controller 32 shown in FIG. 2, and the controller 32 controls opening and closing of the water supply port 13 (on-off valve 21).

As shown in FIG. 1, the horizontal area A of the space surrounded by the upper peripheral surface 20 in the upper tank portion 14 is smaller than the horizontal area B of the upper bottom surface (boundary surface 27) of the upper tank portion 14. It is necessary.

By the way, the “horizontal area of the space surrounded by the upper peripheral surface of the upper tank portion” is the surface in the space sandwiched between the upper top surface 19 and the upper bottom surface (boundary surface 27) of the upper tank portion 14. It is the area of the surface parallel to the upper bottom surface (boundary surface 27).

Further, as shown in FIG. 2, the sum (total) of the volume of the portion of the discharge channel 17 above the boundary surface 27 and the volume of the portion of the overflow channel 18 above the boundary surface 27 is It should be smaller than the volume of the upper tank part 14 .

[Installation of backflow prevention tank]
A backflow prevention tank 12, shown in FIGS. 1 and 2, is mounted under a kitchen sink. At this time, the backflow prevention tank 12 is arranged so that the upper top surface and the lower bottom surface (boundary surface 27 between the upper peripheral surface 20 of the upper tank portion 14 and the lower peripheral surface 26 of the lower tank portion 15) are substantially horizontal. be done.

Necessary wiring and piping (water supply channel 16 , discharge channel 17 , overflow channel 18 , etc.) are attached to the backflow prevention tank 12 .

[Operation during normal water discharge]
There is no water inside the backflow prevention tank 12 when it is first installed.

When the water supply sensor 31 detects the absence of water inside the anti-backflow tank 12 , the control unit 32 opens the water supply port 13 (on-off valve 21 ).

Water is supplied from the water supply port 13 to the inside of the backflow prevention tank 12, and the water supply stop sensor 30 detects that the water level inside the backflow prevention tank 12 has exceeded the position of the water supply stop sensor 30. 32 closes the water supply port 13 (on-off valve 21).

When the use of water is started, the pump 28 is driven by the control unit 32, and water is spouted from the spout 23 to the outside of the backflow prevention tank 12 (spout passage 17).

When the use of water is stopped, the pump 28 is stopped by the control unit 32, and water spouting from the water spout 23 to the outside of the backflow prevention tank 12 (water spouting passage 17) ends.

When the water supply sensor 31 detects the absence of water while water is being discharged from the water discharge port 23 to the outside of the backflow prevention tank 12 (the water discharge path 17), the control unit 32 supplies water at the same time as the water is being discharged. Water supply may be started by opening the port 13 (on-off valve 21).

Thereafter, water supply and water discharge are repeated in the same manner as described above.

[Operation at overflow]
Even if water is supplied from the water supply port 13 to the inside of the backflow prevention tank 12 and the water level inside the backflow prevention tank 12 exceeds the position of the water supply stop sensor 30 due to some abnormality, the water supply port 13 (on-off valve 21) may not be closed.

As the water level inside the backflow prevention tank 12 rises, the air inside the backflow prevention tank 12 is discharged to the outside of the backflow prevention tank 12 (overflow passage 18) through the overflow port 24.

The water level inside the backflow prevention tank 12 further rises, and the water inside the backflow prevention tank 12 rises to the upper bottom surface and the lower top surface (the upper peripheral surface 20 of the upper tank portion 14 and the lower peripheral surface 26 of the lower tank portion 15). reaches the boundary surface 27) with In this state, the overflow port 24 is completely submerged and the air inside the backflow prevention tank 12 cannot be discharged through the overflow port 24 .

When the water level inside the backflow prevention tank 12 further rises beyond the upper bottom surface and the lower top surface (boundary surface 27), the air inside the upper tank portion 14 is compressed, and the air pressure inside the upper tank portion 14 rises. do.

The air inside the upper tank portion 14, which has a certain pressure or more, pushes out the water inside the lower tank portion 15, and the water inside the lower tank portion 15 flows through the overflow port 24 to the outside of the backflow prevention tank 12 ( It is discharged to the overflow channel 18).

As with the overflow port 24 and the overflow channel 18, the water discharge port 23 and the water discharge channel 17 are also open. It is discharged to the discharge channel 17).

The effects of this embodiment will be described below.

(1) The electrolyzed water generating device 10 is disposed upstream of the electrolyzed water generating mechanism 11 for generating electrolyzed water, or integrally with the electrolyzed water generating mechanism 11, and is for preventing backflow of water. and a tank 12 . The anti-backflow tank 12 has an upper tank portion 14 and a lower tank portion 15 . The upper tank portion 14 includes an upper top surface 19 that constitutes the top surface of the backflow prevention tank 12, an upper peripheral surface 20 that continues to the upper top surface 19, an upper bottom surface that is at least partially open, and an upper top surface. 19 and a water supply port 13 formed in one of the upper peripheral surfaces 20 . The lower tank portion 15 includes a lower bottom surface 25 forming the bottom surface of the backflow prevention tank 12, a lower peripheral surface 26 connected to the lower bottom surface 25, and a spout 23 formed in either the lower bottom surface 25 or the lower peripheral surface 26. and an overflow port 24 formed in a lower peripheral surface 26 . The overflow port 24 overlaps the interface 27 between the upper peripheral surface 20 of the upper tank portion 14 and the lower peripheral surface 26 of the lower tank portion 15 . The horizontal area A of the space surrounded by the upper peripheral surface 20 in the upper tank portion 14 is smaller than the horizontal area B of the upper bottom surface (boundary surface 27 ) in the upper tank portion 14 .

As shown in FIG. 1 , the horizontal area A of the space surrounded by the upper peripheral surface 20 in the upper tank portion 14 is smaller than the horizontal area B of the upper bottom surface (boundary surface 27 ) in the upper tank portion 14 . As a result, as shown in FIG. 3, the rise in the water level required for compressing the air to a certain atmospheric pressure inside the upper tank portion 14 is reduced compared to the conventional anti-backflow tank 112 shown in FIG. can be kept low.

In the backflow prevention tank 112 shown in FIG. 4, reference numeral 114 indicates an upper tank portion, reference numeral 115 indicates a lower tank portion, reference numeral 127 indicates a boundary surface between the upper tank portion 114 and the lower tank portion 115, Reference numeral 124 indicates an overflow port. In the conventional backflow prevention tank 112 shown in FIG. 4, the horizontal area from the upper tank portion 114 to the lower tank portion 115 is constant.

For example, the backflow prevention tank 12 shown in FIG. 3 is compared with the conventional backflow prevention tank 112 shown in FIG. Assume that the horizontal area of the lower tank portion 15 shown in FIG. 3 is the same as the horizontal area of the lower tank portion 115 shown in FIG. Further assume that the volume in the upper tank portion 14 shown in FIG. 3 is the same as the volume in the upper tank portion 114 shown in FIG. In the case of the anti-backflow tank 12 shown in FIG. On the other hand, in the case of the backflow prevention tank 112 shown in FIG. 4, the water level rises to 50% of the upper tank portion 114 . Therefore, as shown in FIG. 3, the distance a from the water supply port 13 to the water surface when the air is compressed to a certain atmospheric pressure inside the upper tank portion 14 is ensured to be larger than the distance b shown in FIG. be able to.

In short, according to the electrolyzed water generator 10 according to the present embodiment, it is possible to more reliably prevent the water stored inside the backflow prevention tank 12 from coming into contact with the water supply port 13 .

(2) A weir 22 is placed below the water inlet 13 inside the upper tank portion 14 .

As a result, the momentum when the water from the water supply port 13 comes into contact with the water stored inside the backflow prevention tank 12 is relieved, and the air bubbles inside the backflow prevention tank 12 can be reduced. By reducing air bubbles, leakage of air inside the upper tank portion 14 through the overflow channel 18 can be suppressed. Therefore, air for pushing water out to the overflow passage 18 can be secured, so that the possibility that the water stored inside the backflow prevention tank 12 comes into contact with the water supply port 13 can be further reduced.

(3) The electrolyzed water generator 10 is connected to the water supply port 13 of the upper tank portion 14 , the water supply passage 16 for supplying water to the inside of the backflow prevention tank 12 , and the water discharge port 23 of the lower tank portion 15 . , and a water discharge passage 17 for discharging water to the outside of the backflow prevention tank 12 . The electrolyzed water generator 10 also includes an overflow channel 18 connected to the overflow port 24 of the lower tank portion 15 and discharging water to the outside of the anti-backflow tank 12 . The sum of the volume of the portion of the discharge channel 17 above the boundary surface 27 and the volume of the portion of the overflow channel 18 above the boundary surface 27 is smaller than the volume of the upper tank portion 14 .

In the electrolyzed water generator 10 , the sum of the volume of the portion above the boundary surface 27 in the discharge passage 17 and the volume of the portion above the boundary surface 27 in the overflow passage 18 is the volume of the upper tank portion 14 . Smaller than volume. As a result, when some kind of negative pressure acts on the water supply channel 16, the water in the portion of the water discharge channel 17 and the overflow channel 18 on the higher side than the boundary surface 27 flows into the backflow prevention tank 12 at once. Even if it is pulled back, the possibility of coming into contact with the water supply port 13 is reduced.

It should be noted that the above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiments, and various other embodiments may be used depending on the design etc. as long as they do not deviate from the technical idea of the present invention. is of course possible to change.

10 electrolyzed water generator 11 electrolyzed water generator (ozone device)
12 backflow prevention tank 13 water supply port 14 upper tank portion 15 lower tank portion 16 water supply channel 17 water discharge channel 18 overflow channel 19 upper ceiling surface 20 upper peripheral surface 22 dam plate 23 water discharge port 24 overflow port (overflow hole)
25 Lower bottom surface 26 Lower peripheral surface 27 Boundary surface 33 Lower top surface

Claims (3)

an electrolyzed water generating mechanism for generating electrolyzed water;
A backflow prevention tank disposed upstream of the electrolyzed water generation mechanism or integrally with the electrolyzed water generation mechanism to prevent backflow of water,
The backflow prevention tank has an upper tank portion and a lower tank portion,
The upper tank portion includes an upper top surface that constitutes the top surface of the backflow prevention tank, an upper peripheral surface that continues to the upper top surface, an upper bottom surface that is at least partially an opening surface, the upper top surface, and the top surface. a water supply port formed in one of the upper peripheral surfaces,
The lower tank portion includes a lower bottom surface forming a bottom surface of the backflow prevention tank, a lower peripheral surface connected to the lower bottom surface, a spout formed in either the lower bottom surface or the lower peripheral surface, and the an overflow port formed in the lower peripheral surface;
The overflow port overlaps a boundary surface between the upper peripheral surface of the upper tank portion and the lower peripheral surface of the lower tank portion,
The electrolyzed water generator, wherein the horizontal area of the space surrounded by the upper peripheral surface in the upper tank portion is smaller than the horizontal area of the upper bottom surface in the upper tank portion. The electrolyzed water generator according to claim 1, wherein a dam is arranged below the water inlet inside the upper tank portion. a water supply passage connected to the water supply port of the upper tank portion and supplying water to the inside of the backflow prevention tank;
a water discharge passage connected to the water discharge port of the lower tank portion for discharging water to the outside of the backflow prevention tank;
an overflow channel connected to the overflow port of the lower tank portion and draining water to the outside of the backflow prevention tank;
The sum of the volume of the portion of the discharge channel above the boundary surface and the volume of the portion of the overflow channel above the boundary surface is smaller than the volume of the upper tank portion. 3. The electrolyzed water generator according to 1 or 2.

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