WO2007141957A1

WO2007141957A1 - Water purifying device, and water-ozone mixing device

Info

Publication number: WO2007141957A1
Application number: PCT/JP2007/058147
Authority: WO
Inventors: Naoki Hiro; Yozo Kawamura; Sachiko Migiwa; Toshiyuki Hirata; Yoshihiro Inamoto; Toru Kamimura; Tatsuya Hirota
Original assignee: Sanyo Electric Co., Ltd.
Priority date: 2006-06-08
Filing date: 2007-04-13
Publication date: 2007-12-13

Abstract

Provided is a water purifying device, which can be easily maintained, which can improve water quality satisfactorily with a simple constitution, which can be made compact, which has an easy operability, and which can prevent electrical parts from being submerged. The operations, controls and actions of the device are performed in a place related to a casing (27), by arranging an operation indication unit (55), an ozone generating unit (21), an ozone mixer (7) and a control unit (49) in the casing (27), so that the device can be easily maintained and made compact. On the basis of the water pressure on the discharge side of a pump (5), moreover, the control unit (49) controls the operations of the pump (5) and the ozone generating device (21) in a ganged manner so that the operability is improved. The electrical parts such as the ozone generating unit (21) and the control unit (49) are positioned above a water passage (187), and are isolated from the water passage (187) by a partition (180), so that those electrical parts can be reliably prevented from being submerged.

Description

Specification

Water purification device and water ozone mixing device

Technical field

The present invention relates to a water purification apparatus for purifying water and a water ozone mixing apparatus for mixing ozone with water.

Background art

[0002] Conventionally, there has been a demand to use water and rain water drawn from water sources such as wells and rivers as washing water and bath water, or to spray water for plant cultivation.

However, recently, due to changes in the strata itself and the infiltration of pollutants into the groundwater veins, it has become difficult to use well water that has been drawn by well water quality. Similarly, river water often produces bad water quality. The term “poisonous water quality” as used herein means, for example, that the turbidity and chromaticity of water is increased, or that an odor is generated from water.

[0003] As such a water quality defect, for example, as described in Patent Document 1, there is a case where well water is so-called "red water". “Red water” refers to water in which the well water extracted from the well is changed to red as time passes because iron and manganese components are contained as ions. Therefore, “red water” is not suitable for use as washing water or bath water, and also has a problem of adversely affecting plant cultivation.

[0004] In order to improve the quality of polluted water such as well water and river water with deteriorated water quality as described above, the iron treatment removes iron from the water by ozone treatment and oxidizes ozone. On the other hand, a water-receiving-type well improvement device that can sterilize germs, E. coli, viruses and the like in well water has been proposed (see, for example, Patent Document 1).

In addition, ozone water is mixed with tap water to generate ozone water, and the ozone water is used, for example, for sterilization washing of hands and feet, sterilization 'deodorization' removal of toro boxes containing fresh fish, etc. There is also a request.

[0005] In order to generate ozone water as described above, an ozone water generation system having excellent sterilization and deodorization performance by mixing tap water and ozone has been proposed (for example, a patent (Ref. 2).

Patent Document 1: Japanese Patent No. 2715244

Patent Document 2: Japanese Patent Laid-Open No. 2003-305348

Disclosure of the invention

Problems to be solved by the invention

[0006] The water quality improvement device described in Patent Document 1 is a device in which a large water receiving tank, a first stage treatment machine, and a second stage treatment machine are combined in a complex manner.

By the way, in Indonesia, for example, there are areas where water supply infrastructure is not in place, and in such areas, well water or river water containing red water pumped out by dredging, accumulated rainwater, etc. Etc. are used for domestic use. For this reason, it is desirable that the structure of the water quality improvement device, which is highly demanded to introduce the water quality improvement device in such areas, is preferably as simple as possible, but it has a large and complex configuration like the water quality improvement device described above. In the device, it is difficult to introduce.

[0007] Further, in the water quality improvement apparatus, the ozone generator is disposed below the ozone addition section.

Generally, an ozone generator has a configuration that generates ozone by taking in ambient air and discharging it at a high voltage, so that it cannot be discharged if the ozone generator is exposed to water. There is a problem that. In addition, if the ozone generator exposed to water is turned on, there is a risk of electric leakage or electric shock, which also causes handling problems. Of course, not only the ozone generating device but also other electrical components such as a control device are the same. For this reason, it is desirable to prevent water from entering the ozone generator. However, in the configuration in which the ozone generator is disposed below the ozone addition unit, as in the case of the water quality improvement device described above, Water may invade the ozone generator through the ozone introduction pipe due to its own weight.

[0008] Therefore, in order to improve these problems, like the ozone water generation system described in Patent Document 2, it can be used universally regardless of the flow path conditions, and further, the ozone generator It is proposed that the system configuration provided above the injector, which is the inlet that mixes ozone with the water flowing in the water supply line, be introduced to the water quality improvement device. . However, even if this system configuration is introduced, if the water supply line is filled with water when the system is turned off, the check valve provided in the injector Water leaks and water may still enter the ozone generator. Also, if the flow of water flowing in the water supply line is stopped tightly, V, a so-called water hammer phenomenon occurs, the water pressure in the water supply line rises, and there is a check valve, but there is a check valve in the water supply line. There is a risk that water may flow backward and reach the ozone generator.

[0009] In addition, such a water quality improvement device requires maintenance such as parts replacement and repair, so that it is desired that maintenance can be easily performed.

The present invention has been made based on a strong background, and its main object is to provide a water purification apparatus that can be easily maintained.

Another object of the present invention is to provide a water purification apparatus that can improve water quality satisfactorily with a simple configuration when purifying water.

[0010] Another object of the present invention is to provide a water purification apparatus capable of achieving compactness.

Another object of the present invention is to provide a water purification apparatus with good operability. Another object of the present invention is to provide a water purification apparatus that can prevent the infiltration of electrical components.

[0011] Another object of the present invention is to provide a water purification apparatus that can operate safely when purifying water.

Another object of the present invention is to provide a water-ozone mixing apparatus that can suppress a decrease in ozone mixing efficiency with a simple configuration when ozone is mixed with water.

Means for solving the problem

[0012] The invention according to claim 1 includes a pump for drawing water and a purification device for purifying water.

And an introduction path for introducing water pumped by the pump into the purification apparatus, and a purified water supply path for outputting purified water purified by the purification apparatus, wherein the purification apparatus includes a housing, and An operation unit provided on an outer surface of the housing; an ozone generator disposed in the housing; a gas-liquid mixer for mixing ozone generated by the ozone generator with water; and And a control device for controlling the operation of the pump and the ozone generator.

[0013] According to such a configuration, the operation 'control' operation of the water purification apparatus is performed at a location related to the casing (on the casing surface or inside the casing). As a result, for example, it is possible to easily perform maintenance such as periodic replacement of parts and repair of failed parts. Further, the water purifier can be made compact by combining the ozone generator, the gas-liquid mixer, and the control device in a casing.

[0014] The invention described in claim 2 is that the pump is for drawing raw water from a water source, and the purified water supply path has a lead-out path for taking out purified water purified by the purification apparatus. The water purification device according to claim 1, comprising:

According to such a configuration, the operation “control” operation of the water purification apparatus is performed at a location related to the casing (on the casing surface or inside the casing). As a result, for example, it is possible to easily perform maintenance such as periodic replacement of parts and repair of failed parts. Further, the water purifier can be made compact by combining the ozone generator, the gas-liquid mixer, and the control device in a casing.

[0015] The invention of claim 3 is characterized in that the control device controls the operation of the pump and the ozone generator in conjunction with each other based on the water pressure on the discharge side of the pump. Or it is the water purification apparatus of 2 description.

According to such a configuration, it is possible to provide a water purification device that is easy to handle, and further, the water pressure discharged to the user side is always properly maintained, and the water purification device has good operability. It can be a device.

[0016] The invention according to claim 4 is that the pump is for drawing water from a storage source of the water to be purified, and the purified water supply channel supplies the purified water purified by the purification device to the storage source. The water purification apparatus according to claim 1, further comprising a return path for returning.

According to such a configuration, the operation “control” operation of the water purification apparatus is performed at a location related to the casing (on the casing surface or inside the casing). As a result, for example, it is possible to easily perform maintenance such as periodic replacement of parts and repair of failed parts. The purified water is returned to the water storage source again. Therefore, store purified water in the water storage source. It is possible to use purified water easily. In addition, when the device is operated by solar energy, water can be made during the daylight hours and prepared for use at night.

[0017] The invention according to claim 5 is characterized in that the water storage source includes a water storage tank that stores domestic water, and the water storage tank is provided with a water supply pipe for a user for taking out water from the water storage tank. The tank is arranged at a high place so that water is discharged by gravity when the user water supply pipe is opened, and the pump and the purification device are arranged at a position lower than the water storage tank. The water purification apparatus according to claim 4, wherein the water purification apparatus is characterized.

[0018] According to such a configuration, when the user uses the water stored in the water storage tank, for example, it is only necessary to open the faucet. Moreover, the purification apparatus is arranged at a low position. Therefore, the purification apparatus can be easily operated, and maintenance can be performed more easily.

The invention according to claim 6 is provided with a member to be assembled to which the purification device and the pump are assembled, the water storage tank is disposed above the member to be assembled, and the purification device comprises the assembly 6. The water purification apparatus according to claim 5, wherein the water purification apparatus is disposed at an upper end portion of an attachment member, and the pump is disposed at a position lower than the purification apparatus.

According to such a configuration, the purification device is disposed as close as possible to the water storage tank disposed above the assembled member by being disposed at the upper end portion of the assembled member. Therefore, the height difference between the water purification device and the water storage tank can be reduced, and the loss of the water head when the water stored in the water storage tank reaches the water purification device can be suppressed. As a result, the pressure loss of the water flowing through the gas-liquid mixer of the purification device can be prevented, so that the suction flow rate of ozone into the gas-liquid mixer is reduced. Can be suppressed, and a decrease in the efficiency of gas-liquid mixing can be prevented. Therefore, this water purification apparatus can improve the water quality satisfactorily with a simple configuration.

[0020] In addition, since the pump is generally disposed at a position lower than a pump power purification device that is a heavy object, the posture of the water purification device can be stabilized.

The invention according to claim 7 is characterized in that a filter is provided in the middle of the introduction path to capture foreign matter in the water introduced into the purification device. 6. The water purification apparatus according to 6. [0021] According to such a configuration, since the foreign matter is trapped by the filter and introduced into the hydraulic purification device, the foreign matter is clogged in a portion where water flows inside the purification device, such as a gas-liquid mixer. Can be prevented.

And since this filter is provided in the middle of the introduction path, it is arrange | positioned upstream from the purification apparatus seeing in the direction through which water flows. Generally, when water passes through the filter, the filter becomes a resistance, so that pressure loss occurs in the water near the filter. Therefore, in the case where the filter is disposed on the downstream side of the water purification apparatus, the pressure loss described above occurs on the downstream side of the purification apparatus, so that the ozone mixed into water in the gas-liquid mixer is reduced. There is a concern that the suction flow rate to the gas-liquid mixer may decrease. However, in the present invention, the filter is arranged on the upstream side of the purification apparatus! Therefore, the above-described decrease in the ozone suction flow rate into the gas-liquid mixer can be suppressed, and the decrease in gas-liquid mixing efficiency can be prevented. Thereby, in this water purification apparatus, the water quality can be satisfactorily improved with a simple configuration.

[0022] The invention according to claim 8 is a pressure sensor for detecting a pressure of water flowing between the pump force and the filter, and an eye of the filter according to a pressure value detected by the pressure sensor. The control device for judging clogging, and a notifying means for notifying the clogging of the filter when the clogging of the filter is judged by the control device. 7. The water purification apparatus according to 7.

[0023] According to such a configuration, when the filter is clogged, the flow of water in the introduction path and the purification device is deteriorated, so that the ozone mixed with water in the gas-liquid mixer of the purification device is reduced. There is concern about a decrease in the suction flow rate into the gas-liquid mixer. However, in the present invention, the clogging state of the filter can be managed by the pressure sensor detecting the pressure of water flowing between the pump force and the filter. Then, the control means determines the filter clogging according to the pressure value detected by the pressure sensor, and the notification means notifies the filter clogging according to the determination, so that the filter is accidentally clogged. Therefore, the above-described decrease in the ozone suction flow rate can be suppressed, and the decrease in gas-liquid mixing efficiency can be prevented.

[0024] In addition, as the water storage tank is arranged at a higher position, there is a concern that the ozone suction flow rate into the gas-liquid mixer decreases as described above. If the filter becomes clogged there, gas-liquid mixing There is concern about further decline in the ozone suction flow rate into the vessel. Therefore, it is desirable to detect filter clogging as early as possible in order to prevent a decrease in the ozone suction flow rate due to filter clogging, but in a configuration where the pump is arranged at a position lower than the water storage tank. The higher the water storage tank is located, the higher the pressure value is detected by the pressure sensor. Therefore, the filter is clogged earlier than the actual one and is notified to the user. As a result, it is possible to prevent a decrease in the suction flow rate of ozone into the gas-liquid mixer due to filter clogging.

[0025] In the invention according to claim 9, the casing is partitioned above the water channel, a water channel having one end connected to the introduction channel and the other end connected to the purified water supply channel. An electrical component region and a blocking wall for blocking the electrical component region from the water channel, the gas-liquid mixer is coupled to the water channel, and the ozone generator and the control device include: 9. The water purification apparatus according to claim 1, wherein the water purification apparatus is disposed in the electrical component region.

[0026] According to such a configuration, the electrical components such as the ozone generator and the control device are arranged in the electrical component region partitioned above the water channel, so that even if water leaks from the water channel, Water is unlikely to reach the ozone generator and controller due to its own weight. In addition, this electrical component area is blocked by water barriers, so for example, even if water is splashed during maintenance, the water is reliably prevented from entering the ozone generator and the control device. can do.

[0027] In the invention of claim 10, the water channel extends substantially horizontally in the left-right direction in the housing, and one end projects outwardly from one side surface of the housing and is connected to the introduction channel outside. 10. The water purification device according to claim 9, wherein the other end protrudes outwardly from the other side surface of the housing and is connected to the purified water supply channel on the outside.

According to such a configuration, there is no refracting portion in the water channel extending substantially horizontally in the left-right direction in the housing. If there is a refracted part, it is necessary to separately provide a connecting part such as an elbow tube.In that case, there is a risk that water leakage may occur from the connecting part between the connecting part and the water channel, which is just an increase in the number of parts. These fears are eliminated by the water channel of the present invention, and the ozone generator and the control device can be more reliably prevented from being flooded. [0028] In addition, one end of the water channel protrudes outwardly from one side surface of the casing and is connected to the introduction channel at the outer side, and the other end protrudes outwardly from the other side surface of the casing. It is connected to the. There is a risk of water leakage at one end and the other end of the water channel that is the connection part between the introduction channel and the purified water supply channel, but both one end and the other end protrude outward from the side of the housing. It is not located inside the housing. Therefore, even if water leakage occurs at one end and the other end of the water channel, it is possible to more reliably prevent the ozone generator and the controller inside the casing from being flooded.

[0029] Since the water channel is supported on one side surface and the other side surface of the housing, the water channel can be stably disposed in the housing, and the water channel can be easily assembled to the housing.

The invention according to claim 11 is the water purification apparatus according to claim 10, wherein the gas-liquid mixer is coupled to the water channel so as to constitute the one end or the other end of the water channel. It is.

[0030] According to such a configuration, since the gas-liquid mixer is coupled to the water channel so as to constitute one end or the other end of the water channel, the gas-liquid mixer is coupled in the middle of the water channel and Compared with this, it is possible to reduce the portion where the gas-liquid mixer and the water channel are connected, that is, the portion where water leakage may occur, and it is possible to more reliably prevent the ozone generator and the control device from being flooded. The invention according to claim 12 is characterized in that the blocking wall is disposed above the coupling portion of the water channel and the gas-liquid mixer. This is the water purification device described.

[0031] According to such a configuration, since the blocking wall is disposed above the portion where water leakage may occur, such as the coupling portion of the water channel and the gas-liquid mixer, the ozone generator and the control device Inundation can be prevented more reliably.

The invention according to claim 13 is characterized in that the water channel includes a part that can be removed during maintenance, and the blocking wall is disposed above the part. No! Is the water purification device described in any one of them.

[0032] According to such a configuration, there is a coupling portion between the water channel and a part that can be removed during maintenance, and there is a possibility that water leakage may occur at the coupling portion. Because it is placed above the parts !, so that the ozone generator and the controller can be further submerged. It can be surely prevented.

The invention according to claim 14 is characterized in that the gas-liquid mixer has a water inflow port at one end, a water outflow port at the other end, a water flow path communicating the inflow port and the outflow port, and one end A gas passage having a gas inlet at the other end and a gas passage where the gas outlet is joined in the middle of the water flow path, and ozone generated by the ozone generator is supplied from the gas inlet to the gas A drainage passage for draining water flowing out of the gas passage when the water in the water passage enters the gas outlet and flows through the gas passage, and is provided in the drainage passage. 2. An air inflow suppression means for suppressing air from flowing in a direction opposite to a direction in which water flows out of the drainage channel during ozone supply to the passage. It is a water purification device.

[0033] According to such a configuration, even when the gas enters the gas passage from the hydraulic gas outlet in the water flow path of the gas-liquid mixer, the water does not enter the ozone generator and drains. Drain through the road. Thus, since it is possible to prevent water from entering the ozone generator, it is possible to prevent the ozone generator from being exposed to water and becoming unable to discharge, and to supply ozone stably. During ozone supply to the gas passage, the drainage channel is blocked by the air inflow suppression means, so that external air does not flow into the gas channel, reducing the ozone concentration. Can be prevented, and ozone can be efficiently supplied to the gas passage.

[0034] The invention according to claim 15 is characterized in that the gas-liquid mixer has a water inflow port at one end, a water outflow port at the other end, and a water flow path communicating the inflow port and the outflow port, In addition, a gas inlet having a gas inlet at one end and a gas outlet at the other end, extending upward from the gas inlet toward the gas outlet, and having the gas outlet joined in the middle of the water flow path is provided. The ozone generated by the ozone generator is supplied from the gas inlet to the gas passage, is provided in the gas passage, and is allowed to pass ozone from below to above from the gas inlet to the front gas outlet. However, it includes a check valve for preventing the passage of water in the reverse direction. The check valve opens the gas passage by the supply pressure of ozone when ozone is supplied, and by its own weight when ozone is not supplied. A valve body for closing the gas passage; The water purification device according to claim 1, comprising: [0035] According to such a configuration, the valve body of the check valve opens the gas passage by ozone supply pressure (for example, a negative pressure generated in the gas passage) during ozone supply, whereby the gas inlet port The ozone supplied from the gas passage to the gas passage can be allowed to pass toward the gas outlet. On the other hand, when ozone is not supplied, the valve body closes the gas passage by its own weight, thereby preventing water from passing in the reverse direction (back flow). In this gas-liquid mixer, there is a possibility that water in the water channel leaks downward into the gas channel from the gas outlet joined to the water channel. Even without this operation, the gas passage can be automatically opened and closed to prevent backflow of water.

[0036] The invention of claim 16 has a water inlet at one end, a water outlet at the other end, a water flow path communicating the inlet and the outlet, a gas inlet at one end, and the like. A gas outlet at the end, and the gas outlet is joined in the middle of the water flow path !, a gas-liquid mixer having a gas passage, and generating ozone, and the generated ozone is An ozone supply device for supplying to the gas passage; a drainage passage for draining water flowing out of the gas passage when water in the water passage enters the gas outlet and flows through the gas passage; Air inflow suppressing means for suppressing air from flowing in the direction opposite to the direction of water flowing out of the drainage channel during ozone supply to the gas passage. This is a water ozone mixing device.

[0037] According to such a configuration, even when the gas enters the gas passage from the hydraulic gas outlet in the water flow path of the gas-liquid mixer, the water is drained without entering the ozone supply device. Drain through the road. Thus, since it is possible to prevent water from entering the ozone supply device, it is possible to prevent the ozone supply device from being exposed to water and becoming unable to discharge, and to supply ozone stably. During ozone supply to the gas passage, the drainage channel is blocked by the air inflow suppression means, so that external air does not flow into the gas channel, reducing the ozone concentration. Can be prevented, and ozone can be efficiently supplied to the gas passage.

[0038] The invention according to claim 17 is characterized in that the gas-liquid mixer has a throttle part in which the middle of the water flow path is throttled, and the gas outlet is joined to the throttle part. The water purification device according to claim 16. According to such a configuration, the gas-liquid mixer has the throttle part in which the middle of the water channel is throttled, and the outlet of the gas passage is joined to the throttle part. Therefore, ozone can be taken into the water channel by using the negative pressure generated by the flow of water whose flow velocity increases at the throttle part by the water channel bench action. More specifically, the ozone generated by the ozone supply device is mixed using the negative pressure generated by the water flowing through the throttle, so that, for example, a device such as a blower is not provided and the water flow path is configured with a simple configuration. Can be mixed with ozone.

[0039] The invention described in claim 18 is characterized in that the air inflow suppressing means operates by a pressure change in the drainage channel that changes when ozone is sucked into the throttle portion. It is a water purification apparatus of description.

According to such a configuration, the blocking of the drainage channel by the air inflow suppression means is performed by a pressure change in the drainage channel that changes as the ozone is sucked into the throttle portion. For example, the negative pressure generated in the throttle portion is used. In this way, there is no need to perform a separate operation from the outside, and the drainage channel can be automatically shut off with a simple configuration to prevent the inflow of air.

[0040] The invention according to claim 19 is characterized in that the air inflow suppressing means has an inlet at one end and an outlet at the other end, and the inlet and the outlet are connected to the drainage channel, so that the middle of the drainage channel A storage chamber inserted in the storage chamber, and the storage chamber is flexible and has flexibility, and the pressure entry in the drainage channel that changes when ozone is sucked into the throttle portion closes the front entry port and A blocking member that blocks the drainage channel, and the blocking member is an inner wall of the storage chamber except when water flows out of the drainage channel and when ozone is sucked into the throttle portion. When the water flows out of the drainage channel, a gap is formed between the inner wall of the storage chamber and the blocking member because the blocking member is bent by being pressed by the flowing water. Said by Wherein the water channel is opened, a MizuKiyoshii匕 apparatus of claim 18.

[0041] According to such a configuration, in the air inflow suppression means, the blocking member has a housing chamber except when water flows out of the drainage channel (when draining) and when ozone is sucked into the throttle portion. It is in contact with or close to the inner wall. Therefore, even if the pressure change in the drainage channel is small, the blocking member operates reliably and can block the drainage channel by closing the inlet. Therefore, the inflow of air can be reliably prevented.

[0042] Further, the blocking member has flexibility, and when water flows out of the drainage channel (during drainage), the blocking member is pressed against the flowing water and swallows it, so that Since the drainage channel is opened by forming a gap with the blocking member, smooth drainage in the drainage channel can be maintained.

The invention according to claim 20 is characterized in that it includes a receiving member that is provided in the storage chamber, has a receiving surface that is convexly curved in the opposite direction, and receives the blocking member on the receiving surface. The water purification apparatus according to claim 19.

[0043] According to such a configuration, in the receiving surface of the receiving member that is convexly curved in the direction opposite to the direction in which water flows during drainage (outflow direction), the peripheral side of the receiving surface is located on the center side of the receiving surface. In comparison, since it is located downstream in the water outflow direction, a gap can be secured between the receiving surface and the inner wall of the storage chamber in this peripheral side portion. Therefore, during drainage, the drainage channel can be reliably opened by bending the blocking member until contact between the inner wall of the storage chamber and the blocking member is eliminated in this gap.

[0044] The invention according to claim 21 is a water detection sensor for detecting drainage water, and ozone for stopping the ozone supply device in response to detection by the water detection sensor. 21. The water purification apparatus according to claim 16, further comprising supply control means.

According to such a configuration, the ozone supply device is stopped by the ozone supply control means in response to detection by the water detection sensor. In this way, if the ozone supply device is stopped in response to detection by the water detection sensor, even if water enters the ozone supply device, it is possible to prevent electric leakage or electric shock, and It can be operated safely.

[0045] The invention described in claim 22 has a water inlet at one end, a water outlet at the other end, a water flow path communicating the inlet and the outlet, a gas inlet at one end, and the like. A gas outlet at the end, extending upward from the gas inlet toward the gas outlet, and the gas outlet is joined in the middle of the water flow path! And an ozone supply device that supplies the generated ozone from the gas inlet to the gas passage, and is provided in the gas passage, and is installed from the lower side toward the front gas outlet from the gas inlet. And a check valve for preventing the passage of water in the reverse direction, and the check valve allows the gas passage to be opened by ozone supply pressure when ozone is supplied. A water-ozone mixing apparatus comprising a valve body that is opened and closes the gas passage by its own weight when ozone is not supplied.

[0046] According to such a configuration, when the check valve body supplies ozone, the supply pressure of ozone

By opening the gas passage by (for example, negative pressure generated in the gas passage), it is possible to allow ozone supplied from the gas inlet to the gas passage to pass toward the gas outlet. On the other hand, when ozone is not supplied, the valve body closes the gas passage by its own weight, thereby preventing water from passing in the reverse direction (back flow). In this gas-liquid mixer, there is a possibility that water in the water channel leaks downward into the gas channel from the gas outlet joined to the water channel. Even without this operation, the gas passage can be automatically opened and closed to prevent backflow of water.

[0047] The invention according to claim 23 is characterized in that the valve element is accommodated in the gas passage in a freely movable state, and has an upper surface that is convexly curved upward. 22. The water purification apparatus according to 22.

According to such a configuration, the valve body is accommodated in the gas passage in a freely movable state. That is, the valve body is not supported by another member in the gas passage. Since the operation frequency of the valve body is relatively high for the use of the check valve, there is a possibility that the support portion may be damaged when it is supported by other members in the gas passage. Since the valve body is not supported by another member in the gas passage, the above-described support portion does not exist and there is no possibility of damage.

[0048] Further, the valve body has an upper surface convexly curved upward. As described above, in this gas-liquid mixer, it is assumed that water in the water channel leaks downward into the gas channel from the gas outlet joined to the water channel and pressurizes the upper surface of the valve body. Since the upper surface of the valve body is convexly curved upward, the pressure of water from the water flow path can be released to the surroundings on this upper surface. For example, if this upper surface is flat evenly from the outer edge to the inner center, the pressure of water from the water flow path cannot be released to the surroundings, so the inner part of the upper surface cannot withstand the pressure. The valve body may not be able to close the gas passage completely and may cause backflow of water There is. However, as described above, the upper surface of the valve body of the present invention is convexly curved in the direction opposite to the direction in which water leaks (upward). Even if water pressure is applied to the upper surface of the valve body, the valve body can maintain its overall shape without being squeezed by releasing the pressure to the surroundings. Therefore, the valve body can completely close the gas passage and reliably prevent the back flow of water.

[0049] The invention according to claim 24 is characterized in that a protrusion in contact with the upper surface of the valve body is provided in the gas passage in order to prevent the position of the valve body from shifting. The water purifier according to claim 23.

According to such a configuration, since the position of the valve body is prevented from being shifted by the protrusion provided in the gas passage, the valve body can always be disposed at an appropriate position where the gas passage can be opened and closed. Therefore, the operation reliability of the check valve can be improved.

Brief Description of Drawings

FIG. 1 is a schematic perspective view of a water purification apparatus 1 according to a first embodiment of the present invention.

FIG. 2 is a system diagram showing a configuration example of the water purification apparatus 1.

FIG. 3 is an illustration of the ozone mixer 7.

[Fig. 4] An illustration of the check valve 17. Fig. 4 (a) shows a normal state, and Fig. 4 (b) shows a state during suction.

FIG. 5 is an illustrative view showing one example of a drain valve 36, FIG. 5 (a) shows a normal state, and FIG. 5 (b) shows a state during suction.

FIG. 6 is an illustrative view showing an example of a drain valve 36, FIG. 6 (a) shows a normal state, and FIG. 6 (b) shows a state during suction.

FIG. 7 is a block diagram showing an electrical configuration of the water purification apparatus 1 and shows a portion related to the present invention.

FIG. 8 is a flowchart showing a control operation of the control unit 49 related to the purified water supply of the water purification apparatus 1.

FIG. 9 is a flow chart showing the control operation of the control unit 49 related to water leak abnormality detection of the water purification apparatus 1. FIG. 10 is a schematic perspective view of a water purification apparatus 1 according to a second embodiment of the present invention.

FIG. 11 is a system diagram showing a configuration example of a water purification apparatus 1 according to a second embodiment.

FIG. 12 is a schematic plan view of the operation display unit 55 of the water purification apparatus 1 according to the second embodiment.

FIG. 13 is a block diagram showing an electrical configuration of a water purification apparatus 1 according to a second embodiment, showing a portion related to the second embodiment.

FIG. 14 is a flowchart showing a control operation of the control unit 49 related to purified water supply of the water purification apparatus 1 according to the second embodiment.

FIG. 15 is a system diagram showing a configuration example of a water purification apparatus 1 according to a third embodiment.

FIG. 16 is a system diagram showing a configuration example of an ozone water generator 70 according to a fourth embodiment.

FIG. 17 is a front perspective view of a casing 27 in a water purification apparatus 1 according to a fifth embodiment.

FIG. 18 is a front perspective view of the inside of the casing 27.

FIG. 19 is a plan view of the inside of the housing 2.

FIG. 20 shows a mode in which the ozone generator 21 is arranged above the control unit 49 in FIG.

FIG. 21 is a front perspective view of a water purification apparatus 1 according to a sixth embodiment.

FIG. 22 is a side sectional view of an ozone mixer 7 according to a seventh embodiment.

[FIG. 23] In the check valve 17 used in the ozone mixer 7 according to the seventh embodiment, the valve chamber

It is the figure which looked at 29 inside from the bottom.

24 is an upper perspective view of the arch valve 81. FIG.

FIG. 25 is an upper perspective view of the inside of the valve chamber 29 in a state where the arch valve 81 is arranged.

FIG. 26 is an illustrative view of a check valve 17 according to a seventh embodiment. FIG. 26 (a) shows a normal state, and FIG. 26 (b) shows a state during suction.

FIG. 27 shows the drain valve 36 extracted from FIG. 22, where FIG. 27 (a) shows the normal state, FIG. 27 (b) shows the state during suction, and FIG. ) Indicates the state during drainage.

28 is an upper perspective view of the stopper 47 inside the valve chamber 38. FIG.

Explanation of symbols

1 Water purification device Water ozone mixing device Water source

Suction pipe Pump

Raw water supply pipe Ozone mixer Ozone supply equipment Purified water supply pipe Zon deodorization column Pressure sensor Inlet Outlet Water flow path Restriction part

Gas passage check valve

3-way entrance

Exit

Ozone generator Ozone supply tube Enclosure

Valve chamber

entrance

Drain port Drain pipe Drain valve Water tray 38 Valve chamber

40 entrance

42 Exit

45 Water leak sensor

46 Disc valve

47 Stopper

48 Clearance

49 Control unit

55 Operation display

61 Open / close valve

65 tanks

67 User water pipe

69 Water storage pipe

81 Arch valve

89 protrusion

99 Pressurized surface

100 Sealing surface

101 Elastic convex

103 Reception surface

180 barrier

181 Electrical component area

187 waterway

189 Huinoleta

190 frames

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Configuration of water purification device 1) FIG. 1 is a schematic perspective view of a water purification apparatus 1 according to the first embodiment of the present invention. FIG. 2 is a system diagram showing a configuration example of the water purification apparatus 1. When referring to the direction, refer to the arrow indicating the direction shown. In the system diagram of FIG. 2, solid arrows indicate the flow of water, and broken arrows indicate the flow of electricity.

Referring mainly to FIG. 2, this water purification apparatus 1 includes a water ozone mixing apparatus 2 according to the present invention, and ozone is mixed with water by the water ozone mixing apparatus 2 to produce water. No purification process is performed. More specifically, the water purification apparatus 1 includes a pump 5 for sucking raw water from a water source 3 such as a well or a river through a suction pipe 4, and a water supply channel and an introduction channel that are raw water channels discharged from the pump 5. The raw water supply pipe 6 and the raw water supply pipe 6 are connected to the raw water supply pipe 6 and the ozone mixer 7 as a gas-liquid mixer that mixes ozone with the raw water, and ozone is generated and the generated ozone is supplied to the ozone mixer 7 The ozone supply device 8 (the ozone mixer 7 and the ozone supply device 8 are included in the water ozone mixing device 2), and the purified water mixed with ozone in the ozone mixer 7 is supplied to the user side. Purified water supply pipe 9 (leading path, purified water supply path and ozone water output pipe) and ozone deodorizing column inserted into the purified water supply pipe 9 as an ozone decomposing unit for decomposing ozone remaining in the purified water With 10 And these water water source 3 is Kiyoshii spoon by further residual ozone is decomposed and supplied to the user as raw utilize water.

[0054] The pump 5 includes a pressure sensor 11 for detecting the flow path pressure (discharge-side flow path pressure) of the raw water supply pipe 6, an impeller (not shown), and a rotation sensor for rotating the impeller. A motor (not shown) is provided. The pressure sensor 11 is a sensor that is turned off when the discharge-side flow path pressure is equal to or higher than a predetermined pressure, and is turned on when it is lower than the predetermined pressure. The ONZ OFF signal of the pressure sensor 11 is given to the control unit 49 described later. When the pressure sensor 11 is turned on by the control signal, the pump 5 is driven. Therefore, the raw water is always sent to the ozone mixer 7 at a predetermined pressure or higher.

Here, the configuration of the ozone mixer 7 will be described with reference to FIG. FIG. 3 is an illustration of the ozone mixer 7. In FIG. 3, the solid line arrows represent the water flow, and the broken line arrows represent the gas flow.

The ozone mixer 7 has a water flow path 1 having a water inlet 12 at one end and a water outlet 13 at the other end. 4 is provided.

[0056] The water channel 14 has a constricted portion 15 that is constricted in the middle and narrowed in inner diameter. A gas passage 16 is connected to the throttle portion 15. The gas passage 16 has a check valve 17 in the middle thereof and a three-way branch 18 below the check valve 17. An inlet 19 as a gas inlet that opens to the side of the three-way branch 18 is an inlet for ozone, and an outlet 20 as a gas outlet at the upper end of the ozone exit is connected to the throttle 15. It communicates in a T shape.

[0057] The flow rate of water flowing in from the inflow port 12 is increased in the throttle portion 15. Due to the flow of water with the increased flow velocity, the inside of the throttle portion 15 becomes a negative pressure. Due to this negative pressure, the ozone that has flowed into the gas passage 16 is sucked into the water flow path 14 from the outlet 20 and has a diameter of, for example, Is mixed into water as ultrafine bubbles (so-called microbubbles) of 50 m or less. In this way, when the throttle portion 15 is provided in the water flow path 14 to form a bench-lily structure, for example, a device such as a blower is not provided, and the water flow path 14 is utilized by utilizing the negative pressure generated by the water flow in the throttle portion 15. The ozone can be taken in efficiently.

In this embodiment, the ozone mixer 7 has been described as a bench-lily structure. However, for example, a T-shaped tube can be used as the ozone mixer 7. In the case of a T-shaped tube, there is no portion with a small diameter in the water channel formed by the throttling portion 15, so that the water channel can be prevented from being clogged with foreign substances.

Referring to FIG. 2, ozone supply device 8 has an ozone generator 21 that converts oxygen in the air into ozone by discharging the air.

The ozone generator 21 has a discharge element circuit (not shown) and a discharge electrode plate (not shown) inside, and is electrically connected to a control unit 49 (described later).

Also, the ozone supply device 8 includes an intake pipe 22 for sucking air outside the casing 27, which will be described later, a filter 23 inserted in the intake pipe 22, an ozone supply pipe 24 serving as a supply pipe and an ozone supply path, an ozone supply A check valve 17 inserted into the pipe 24 is included, the intake pipe 22 is connected to the inlet 25 of the ozone generator 21, and the ozone supply pipe 24 is connected to the exhaust 26 of the ozone generator 21. ing. When the ozone generator 21 is turned on by the control unit 49 (described later), the air taken into the ozone generator 21 from the intake port 25 is discharged by an electrode plate (not shown) (for example, creeping discharge, (Such as silent discharge) To do. Dust contained in the air flowing in from the air inlet 25 is captured by the filter 23, so that dust enters the ozone generator 21 and damages the discharge element (not shown) and the electrode plate (not shown). This can be prevented.

[0060] The generated ozone flows out from the exhaust port 26, and can be supplied to the inlet 19 of the three-way branch 18 through the check valve 17 and the ozone supply pipe 24 (see FIG. 3).

Ozone is supplied from the ozone mixer 7, and the water purified by sterilization and sterilization by ozone flows through the purified water supply pipe 9, and the residual ozone is decomposed in the ozone deodorizing column 10, and the user uses it. Supplied. Specifically, ozone decomposition in the ozone deodorization column 10 is described. The ozone deodorization column 10 is filled with activated carbon, for example, and this activated carbon and unreacted ozone remaining in the purified water undergo an oxidation reaction. As a result, unreacted ozone is decomposed. By being decomposed in this way, ozone does not exist in the water supplied to the user side, and the user can use the purified water with peace of mind.

[0061] Water purification is performed according to the flow described above, and the purified water is supplied to the user.

In the water purification apparatus 1, such water purification is performed in a casing 27 in which the water ozone mixing apparatus 2 is accommodated (see FIG. 1).

The casing 27 is disposed above the pump 5, and on the surface thereof, an operation display section 55 is formed as an operation section for performing various operations and various displays related to the operation of the water purification device 1. The operation display unit 55 is electrically connected to a control unit 49 (described later). Therefore, the user can operate the water purification apparatus 1 by operating the operation display unit 55 to give an instruction to the control unit 49 (described later) and know the operation state.

[0062] Further, as described above, the casing 27 accommodates the control unit 49 that is electrically connected to the pump 5 and the ozone generator 21. As described above, the operation display unit 55 is formed in the casing 27 as a purification device related to the operation 'control' operation of the water purification, and the ozone generation device 21, the ozone mixer 7 and the control unit 49. Is housed in the casing 27, for example, the user can easily perform maintenance such as periodic replacement of parts and repair of a failed part. The electrical configuration of the control unit 49 will be described in detail later with reference to FIG.

Further, an ozone deodorizing column 10 is attached to the outer surface of the casing 27. Ozone desorption Since the odor column 10 is provided in the vicinity of the casing 27, maintenance of the ozone deodorization column 10, such as replacement of activated carbon filled in the ozone deodorization column 10 or replacement of the ozone deodorization column 10 main body, etc. Can be easily performed. Furthermore, since it is provided outside the housing 27, there is no need to open the lid of the housing 27 during maintenance.

In the casing 27, the ozone generator 21 is disposed above the three-way branch 18. For this reason, even if water enters the three-way branch 18, it can be prevented that the water enters the ozone generator 21.

For example, as shown in FIG. 1, the raw water supply pipe 6 (downstream of the elbow pipe 28) and the purified water supply pipe 9 (upstream of the ozone deodorizing column 10) can be attached and detached, and the casing 27 must be purified. It can also be configured to be portable where needed.

Referring to FIG. 3 again, a check valve 17 is interposed in the gas passage 16 connected to the water channel 14. The check valve 17 is for preventing a flow (especially a flow of water) flowing from the bottom to the top in the gas passage 16 (especially a flow of ozone) from an upper side to a lower side.

Here, a configuration example of the check valve 17 will be described with reference to FIG. Fig. 4 is an illustrative view of the check valve 17. Fig. 4 (a) shows the state when water is not flowing in the water flow path 14 (hereinafter referred to as normal time), and Fig. 4 (b) The state when water is flowing in the water channel 14 (hereinafter referred to as suction) is shown. In FIG. 4, the dashed arrows indicate the gas flow.

[0066] The check valve 17 includes a valve chamber 29, a ball valve 30 that can move in the valve chamber 29, one side (for example, the lower side) and the other side (for example, the upper side) of the valve chamber 29. The inlet 31 and the outlet 32 are formed as fluid passage holes, and the spring 33 is urged so that the ball valve 30 always closes the inlet 31. The shape of the valve chamber 29 is not limited to the force that is a rocket shape that tapers upward in this example. The point is that the ball valve 30 can move in the valve chamber 29 and the fluid can move between the inlet 31 and the outlet 32 when the inlet 31 is not blocked.

[0067] The ball valve 30 is, for example, a known sphere such as rubber or resin, and has a diameter larger than that of the inlet 31.

The spring 33 has a biasing force that allows the ball valve 30 to move upward due to negative pressure during suction. ing. The spring 33 may be a force exemplifying a coil spring, such as a bar spring or a plate spring.

As shown in FIG. 4A, the check valve 17 is normally closed at its inlet 31 by the weight of the ball valve 30 and the biasing force of the spring 33. Therefore, even if water has entered the valve chamber 29, the water is blocked in the valve chamber 29.

On the other hand, at the time of suction, as shown in FIG. 4B, the ball valve 30 is sucked by negative pressure, and the blocked inlet 31 is in communication with the inside of the valve chamber 29. For this reason, the route connecting the ozone generation device 21 → the ozone supply pipe 24 → the inlet 19 of the three-way branch 18 → the gas passage 16 is connected, and ozone is supplied to the gas passage 16. At the time of suction, since water flows in the water channel 14, the water does not leak from the outlet 20 to the gas passage 16.

[0069] If the check valve 17 is provided, for example, the suction state force is also switched to the normal state, and a water hammer phenomenon or the like caused by suddenly stopping the flow of water in the water flow path 14 may occur. For this reason, even if water in the water flow path 14 enters the gas passage 16 from the outlet 20, the inlet 31 of the valve chamber 29 is blocked by the ball valve 30, so that the water that has entered the check valve Can be blocked at 17. Therefore, it is possible to prevent water from entering the downstream side of the check valve 17, that is, the ozone generator 21 side. Even if the check valve 17 inserted in the gas passage 16 is damaged and water passes through the check valve 17, the ozone supply pipe 24 is further reversed. Since the stop valve 17 is inserted, the check valve 17 can block water and prevent the water from entering the ozone generator 21.

[0070] Note that a plurality of check valves 17 in the gas passage 16 may be arranged in series if necessary.

Referring to FIG. 3, the three-way branch 18 is provided with a drain outlet 34 as a drain opening that opens downward in addition to the inlet 19 described above. A drain pipe 35 is connected as a drainage channel for draining water that has entered the gas passage 16 (see Fig. 2).

The drain pipe 35 extends downward from the three-way branch 18, and in the middle of the drain pipe 35 serves as an air inflow suppression means for suppressing air from flowing through the drain pipe 35 during ozone supply. All drain valves 36 are provided. In addition, the outlet at the lower end of the drain pipe 35 is provided with a water tray 37 as a water receiver for receiving water flowing out from the outlet (see Fig. 2).

The drain pipe 35 is for draining water that has entered the gas passage 16 to the outside. As described above, since the check valve 17 is inserted in the gas passage 16, normally, the infiltrated water is blocked by the ball valve 30. Even if it is a strong gap force with 1, water leaks out and may flow down to the drain pipe 35 via the three-way branch 18. Even in such a case, since the drain pipe 35 is provided, the powerful water that cannot be blocked by the check valve 17 can be drained to the outside.

[0072] Further, the flow path diameter of the drain pipe 35 is designed so as to be able to drain a water amount greater than or equal to the amount of water leaking from the outlet 20 to the gas passage 16 per certain time (for example, 10 minutes). Therefore, for example, even if the check valve 17 is not provided or the check valve 17 is damaged, the water leaked into the gas passage 16 does not stagnate in the drain pipe 35 and smoothly flows. Drained outside. In other words, it is possible to prevent water from stagnating in the drain pipe 35 and flowing out from the inlet 19 of the three-way branch 18 to the ozone generator 21 side.

The drain valve 36 is a valve for suppressing the inflow of air in the direction opposite to the direction of water flow in the drain pipe 35 during ozone supply.

Here, referring to FIG. 5, a configuration example of the drain valve 36 and the water tray 37 will be described. FIG. 5 is an illustrative view showing an example of the drain valve 36. FIG. 5 (a) shows a normal state, and FIG. 5 (b) shows a state during suction. In FIG. 5, solid arrows indicate the flow of water, and broken arrows indicate the flow of gas. In FIG. 5 (b), the illustration of the configuration of the water tray 37 shown in FIG. 5 (a) is omitted.

Referring to FIG. 5, drain valve 36 has a valve chamber 38 as a storage chamber and a ball valve 39 stored in valve chamber 38.

An inlet 40 is formed on the upper surface of the valve chamber 38. A recess 41 in which the ball valve 39 is located by its own weight is formed on the lower surface of the valve chamber 38, and an outlet 42 is formed on the lower surface avoiding the recess 41. The drain valve 36 is inserted into the drain pipe 35 so as to be a part of the channel of the channel force drain pipe 35 that allows the inlet 40 and the outlet 42 to communicate with each other. [0075] The ball valve 39 is, for example, a known sphere such as rubber or resin, and is formed to be larger in diameter than the inlet 40.

Normally, the ball valve 39 is positioned in the recess 41 in the valve chamber 38 due to its own weight, as shown in FIG. Therefore, the water falling through the drain pipe 35 is drained through the drain valve 36.

On the other hand, at the time of suction, as shown in FIG. 5 (b), the ball valve 39 is sucked by negative pressure, and the inlet 40 is blocked. Therefore, the drain pipe 35 located upstream from the drain valve 36 is blocked from the outside through the drain valve 36.

The interior of the water tray 37 is divided into two rooms by a partition wall 73 that is lower than the height of the peripheral wall of the water tray 37, and the output of the room power drain pipe 35 of the two rooms is also It is a water receiving chamber 74 that receives the drained water, and an overflow chamber 75 into which the water overflowing from the other chamber strength water receiving chamber 74 beyond the cutting wall 73 enters. The overflow chamber 75 is connected with a discharge pipe 76 that leads to the outside of the casing 27 (see FIG. 2). The water drained from the drain pipe 35 is once received in the water receiving chamber 74, and when the water level is below the height of the partition wall 73, it does not overflow into the overflow chamber 75 and evaporates over time. To do. On the other hand, if the water level exceeds the height of the partition wall 73, the excess amount overflows into the overflow chamber 75 as shown by the solid line arrow in FIG. Discharged.

[0077] Further, a water leak sensor 45 as a water detection sensor is provided at a position slightly lower than the upper end of the partition wall 73 on the peripheral surface wall of the water tray 37!

The water leak sensor 45 is turned on when it detects that the water level force of the water stored in the water receiving chamber 74 is higher than a predetermined water level (for example, the height of the broken line in Fig. 5 (a)). It is a sensor to FF. The ONZOFF signal of the water leak sensor 45 is given to the control unit 49. When the water leak sensor 45 is turned ON by the control signal and a predetermined time elapses, the pump 5 and the ozone generator 21 are turned OFF by the control unit 49. The The flow of detection by the water leak sensor 45 will be described in detail later with reference to FIG.

A second configuration example of the drain valve 36 will be described with reference to FIG.

The drain valve 36 of the second configuration example has a valve chamber 38 and a disc valve 46 as a blocking member accommodated in the valve chamber 38. The valve chamber 38 has a stopper for receiving the disc valve 46. 47 is provided. The valve chamber 38 has an inlet 40 formed on the upper surface and a large outlet 42 formed on the lower surface below the stopper 47.

[0079] The disc valve 46 is, for example, a known disc-shaped valve such as rubber or grease, and is formed with a diameter larger than the diameter of the inlet 40.

The stopper 47 is disposed at such a height that a gap 48 is formed between the periphery of the disc valve 46 and the inner wall of the valve chamber 38 when the disc valve 46 is received.

The disc valve 46 is normally received by a stopper 47 by its own weight as shown in FIG. 6 (a). Therefore, the drain pipe 35 on the inlet 40 side and the drain pipe 35 on the outlet 42 side communicate with each other through the drain valve 36, and the leaked water is drained through the drain pipe 35.

On the other hand, at the time of suction, as shown in FIG. 6 (b), the disc valve 46 is sucked by negative pressure, and the inlet 40 is closed. A drain pipe 35 located upstream from the drain valve 36 is shut off from the outside through the drain valve 36.

Thus, during suction, that is, during ozone supply to the inlet 19, the drain pipe 35 is shut off from the outside through the drain valve 36, and the external air passes through the drain pipe 35 through the three-way branch 18, Since it does not flow into the gas passage 16, it is possible to prevent the supplied ozone concentration from being lowered, and to supply ozone at a constant concentration stably. As a result, water purification can be performed efficiently. In addition, since the drain pipe 35 can be shut off by using the negative pressure generated in the throttle portion 15, it is possible to automatically prevent the inflow of air from the outside without any separate operation. .

Note that in this embodiment, a force that prevents the inflow of air during ozone supply by the drain valve 36, for example, an electromagnetic valve is provided instead of the drain valve 36, and is controlled by the control unit 49 (described later). It can also be controlled. In this case, when the water purification apparatus 1 is in operation, the electromagnetic valve is closed so that air does not flow in. When the water purification apparatus 1 is stopped, the electromagnetic valve is opened so that water leaking from the outlet 20 can be drained.

The water purification apparatus 1 is provided with, for example, an ozone supply control means for controlling the pump 5, the ozone generator 21 and the like, and a control unit 49 as a control device. Is housed inside the casing 27 and connected to an external power source 50 (see FIG. 2). This Now, the controller 49 will be described with reference to FIG.

The control unit 49 is composed of, for example, a microcomputer, and includes a CPU 51, a ROM 52, a RAM 53, and a timer 54. The control unit 49 is electrically connected to the operation display unit 55, the ozone generator 21, the pump 5, the water leak sensor 45, and the pressure sensor 11, respectively.

The operation display unit 55 includes a power switch 56 for ONZOFF of the control unit 49, an ozone switch 57 for ONZOFF of the ozone generator 21, and a power LED 58 for performing various displays to the user, ozone LED59, abnormal LED60, etc. are provided respectively.

[0084] In the configuration of the water purification apparatus 1 described above, the portion composed of the ozone mixer 7, the ozone supply device 8, the drain pipe 35, and the drain valve 36 is the water according to the present invention. It functions as the ozone mixing device 2, and in the water purification device 1, the user operates the operation display unit 55 so that the water ozone mixing device 2 is controlled by the control unit 49, so that ozone is added to the water. Water is purified by mixing.

(Control of water purification equipment 1)

FIG. 8 is a flowchart showing the control operation of the control unit 49 related to the water purification water supply of the water purification apparatus 1. Hereinafter, with reference to FIG. 8, the control regarding water purification water supply of the water purification apparatus 1 is demonstrated.

[0085] When the power switch 56 is turned on by the user (Yes in step S1), it is determined whether or not the ozone switch 57 is turned on (step S2). If the ozone switch 57 is not turned ON (No in step S2), the pump 5 is controlled independently (step S9). That is, only the pump 5 is turned on, and ozone is not supplied to the water of the water source 3, but is supplied to the user side as it is. On the other hand, when the ozone switch 57 is turned on (Yes in step S2), the pump 5 and the ozone generator 21 are controlled in conjunction (step S3). In other words, when the user opens the faucet or the like, the water pressure in the flow path drops, and when the pressure sensor 11 is turned on (Yes in step S4), both the pump 5 and the ozone generator 21 are turned on (step S5). Water source 3 Purified water supply in which water is purified and supplied by ozone is performed.

[0086] Then, when the pressure sensor 11 is turned OFF during purification water supply (Yes in step S6), it is determined whether or not the pressure sensor 11 is turned OFF and the force is also T1 seconds, for example, 1 second (step S7). . When T1 seconds have elapsed (Yes in step S7), the pump 5 and the ozone generator 21 are turned off (step S8), and the purified water supply is terminated. Further, the user can also end the purified water supply by turning off the power switch 56. When the user wants to use the purified water again after the above water supply is completed, it is only necessary to open the faucet. In other words, when the user opens the faucet, the pressure sensor 11 is turned on again (Yes in step S4), and the pump 5 and the ozone generator 21 are automatically turned on in conjunction with this, so the user Can be used.

As described above, by controlling the pump 5 and the ozone generator 21 in conjunction with each other, it is possible to provide the water purification apparatus 1 that is easy to operate and easy to handle. In addition, since the water pressure in the flow path is controlled by the pressure sensor 11, the water pressure discharged to the user use side is always properly maintained, and the water purification device 1 with good operability can be obtained. it can.

FIG. 9 is a flowchart showing the control operation of the control unit 49 relating to the detection of water leakage abnormality of the water purifier 1. Hereinafter, with reference to FIG. 9, the control relating to the water leakage abnormality detection of the water purification apparatus 1 will be described. In this case, the abnormality detection of water leakage refers to detecting that there is a possibility that water leaked from the gas passage 16 may enter the ozone generator 21.

[0088] During the purification water supply to the user shown in FIG. 8, when water of a predetermined level or more is accumulated in the water receiving chamber 74 and the water leak sensor 45 is turned on (Yes in step S11), the water leak sensor 45 is turned on. Then, it is determined whether or not the force has also elapsed for T2 seconds, for example, 1 second (step S12). When T2 seconds elapse (Yes in step S12), the pump 5 and the ozone generator 21 are turned off (step S13), the abnormality LED 60 is lit, the ozone LED 59 flashes (step S14), and the user is notified. Water supply is stopped.

If the user uses purified water again after the water supply is stopped, the water purification apparatus 1 can be restarted by turning on the power switch 56 again. At this time, the water leakage sensor 45 is reset to the initial state. In other words, even if the water supply is stopped while the water leak sensor 45 is ON, it is reset to the OFF state after restarting. In addition, If water of a predetermined level or more remains in the water receiving chamber 74 even after the water supply is stopped, the above processing and determination (steps Sl to 14) are performed again immediately after the restart, and the water supply is stopped.

[0090] Thus, by stopping the pump 5 and the ozone generator 21 in response to the detection of the water leak sensor 45, it is possible to prevent electric leakage and electric shock, etc. It can be operated safely.

At the same time, the user is notified of the abnormality by turning on the abnormality LED 60 or blinking the ozone LED 59, so that the user can quickly cope with the water leakage abnormality detection. Further, if the water level in the water receiving chamber 74 is lower than a predetermined water level (for example, the height of the broken line in FIG. 5 (a)), the water leak sensor 45 does not detect that the water leak is abnormal, and further the water leak sensor Even when 45 is turned on, if T2 seconds have not elapsed (No in step S12), water leakage abnormality detection is not performed. For this reason, it is possible to prevent the user from being forced to deal with an abnormal water leak, and to efficiently perform the water purification process.

[0091] As described above, in this water purification apparatus 1, even when leaking from the hydraulic inlet 19 in the water flow path 14, the water is generated from the inlet 19 in the three-way branch 18. The water is drained from the drain outlet 34 through the drain pipe 35 without entering the device 21 side. In this way, since water can be prevented from entering the ozone generator 21, it can be prevented that the ozone generator 21 is exposed to water and cannot be discharged, and ozone can be supplied stably. it can. That is, it is possible to prevent a reduction in water quality improvement efficiency (ozone mixing efficiency).

[0092] Further, during the ozone supply to the inlet 19, the drain pipe 35 is shut off from the outside through the drain valve 36, and the outside air flows from the drain pipe 35 through the three-way branch 18 into the gas passage 16. Therefore, the concentration of ozone to be supplied can be prevented from being lowered, and ozone with a certain concentration can be stably supplied. As a result, water can be efficiently purified.

[0093] Furthermore, since the pump 5 and the ozone generating device 21 are stopped when the water leakage sensor 45 detects the water leakage abnormality, it is possible to prevent a leakage current and an electric shock and to operate the water purification device 1 safely. be able to.

(Configuration of water purification device 1) FIG. 10 is a schematic perspective view of the water purification apparatus 1 according to the second embodiment of the present invention. FIG. 11 is a system diagram showing a configuration example of the water purification apparatus 1 according to the second embodiment. 1 and 2 are denoted by the same reference numerals and description thereof is omitted. In the system diagram of FIG. 11, solid arrows indicate the flow of water, and broken arrows indicate the flow of electricity.

Referring mainly to FIG. 11, the water purification apparatus 1 according to the second embodiment is not provided with the pump 5 and the pressure sensor 11 as shown in FIG. The pipe 6 is provided with an open / close valve 61 as an open / close valve for opening and closing the raw water supply pipe 6.

The open / close solenoid 61 is, for example, a valve such as an electromagnetic valve that is electrically opened and closed, and is electrically connected to the control unit 49. Therefore, the user can use purified water by connecting the raw water supply pipe 6 to, for example, a faucet of a water supply and opening and closing the opening / closing valve 61 as appropriate. The purified water supplied to the user is generated by the same method as in the first embodiment.

FIG. 12 is a schematic plan view of the operation display unit 55 of the water purification apparatus 1 according to the second embodiment. FIG. 13 is a block diagram showing an electrical configuration of the water purification apparatus 1 according to the second embodiment, and shows a portion related to the second embodiment. Note that parts that are the same as those in FIG.

The control unit 49 of the water purification apparatus 1 according to the second embodiment is composed of, for example, a microcomputer. The control unit 49 is electrically connected to the operation display unit 55, the ozone generator 21, the open / close valve 61, and the water leak sensor 45, respectively.

[0096] In addition to the power switch 56, the power LED 58, the ozone LED 59, and the abnormal LED 60, the operation display unit 55 includes a coarse switch 62 for selecting whether ozone is mixed in the water to be supplied, and an open / close valve 61. A water supply switch 63 for performing the opening / closing operation and a water supply LED 64 for displaying whether or not the water is being supplied are provided. Therefore, the user can operate the operation display unit 55 to open and close the open / close valve 61 to supply water, or to mix ozone with the supplied water to generate purified water.

(Control of water purification equipment 1)

FIG. 14 shows the control of the control unit 49 regarding water purification water supply of the water purification apparatus 1 according to the second embodiment. It is a flowchart which shows operation | movement. Hereinafter, with reference to FIG. 14, the control regarding the purified water supply of the purified water apparatus 1 which concerns on 2nd Embodiment is demonstrated.

When the power switch 56 is turned on by the user (step S21), the course setting is read from the ROM 52 (step S22). Here, the course setting is, for example, the program content in which the amount of ozone supplied to the water in the water supply is set, and the user can change the course setting by appropriately changing the content of ROM52. Can do. When the course switch 62 is turned on (Yes in step S23), the ozone generator 21 is turned on (step S24).

[0098] Then, when the water supply switch 63 is turned on (step S25) and the water supply is started by opening the open / close valve 61 (step S26), ozone is supplied to the ozone mixer 7 by the negative pressure. The At this time, water supply is started even if the water supply switch 63 is turned on without the course switch 62 being turned on (No in step S23). At this time, water not mixed with ozone is sent to the user side. Further, even when the user starts water supply without turning on the coarse switch 62, the user can supply ozone to the ozone mixer 7 by turning on the coarse switch 62 during the water supply. Thereafter, when the power switch 56 is turned off (step S27), the clean water supply ends.

[0099] As described above, if the raw water supply pipe 6 is provided with the opening / closing valve 61 and can be supplied with purified water by a user's appropriate operation, for example, a water source (for example, a well, a river, etc.) Even if the user's place of use is remote, if the pump is driven near the water source and the open / close valve 61 is provided near the user's place of use, the pump will be driven each time it is used. Purified water can be used simply by operating the open / close valve 61 in accordance with the use.

[0100] Further, since the pump 5 is not driven by the pressure sensor 11 as in the first embodiment, there is no need to provide a channel opening / closing component such as a faucet on the user side. That is, regardless of the situation (for example, the presence or absence of a faucet) where the ends of the raw water supply pipe 6 and the purified water supply pipe 9 are connected, the water purification plant according to the second embodiment is used. Device 1 allows the use of purified water.

[0101] Regarding the control of the water leakage abnormality detection of the water purification apparatus 1 according to the second embodiment Since this is the same as in the first embodiment, description thereof is omitted here.

(Configuration of water purification device 1)

FIG. 15 is a system diagram showing a configuration example of the water purification apparatus 1 according to the third embodiment. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted.

[0102] In the water purification device 1 according to the third embodiment, the water source 3 shown in Fig. 2 is a tank 65 as a water storage tank for storing water.

The tank 65 is installed on the same height as the roof of the house 77, for example, a dedicated steel tower. The tank 65 is connected to a water storage pipe 69 including a tank pump 66 for pumping water from a water source (for example, a well or a river). The tank 65 is driven by the driving force of the tank pump 66. Water is collected.

[0103] In addition, the pump 5 is installed at a position lower than the tank 65, more specifically, on the floor 78 of the house 77, and the casing 27 is installed on the inner wall 79 of the house 77. 27 (more specifically, the ozone mixer 7 (see Fig. 1)) is connected by the raw water supply pipe 6.

A suction pipe 4 extending downward from the inside of the tank 65 is connected to the pump 5. The casing 27 (more specifically, the ozone mixer 7 (see FIG. 1)) has a purified water supply pipe 9 as a return path. The other end of the purified water supply pipe 9 is connected to the inside of the tank 65 from above the tank 65.

[0104] For this reason, the water in the tank 65 is driven by the driving force of the pump 5 as follows: tank 65 → suction pipe 4 → pump 5 → raw water supply pipe 6 → housing 27 → purified water supply pipe 9 → tank 65 The circulation channel) is circulated while being purified in the casing 27. In this way, since the water in the tank 65 is circulated through the purified water, the purified water can be stored in the tank 65. In addition, since the pump 5 and the casing 27 are installed at low positions such as the floor 78 and the inner wall 79, the user can easily perform the operation and maintenance of the water purification apparatus 1.

[0105] Further, one end of a user water supply pipe 67 that extends downward from the tank 65, bends in the middle, and extends into the house 77 is connected to the tank 65, and the other end of the user water supply pipe 67 is connected to the other end of the user water supply pipe 67. A faucet 68 is provided. Therefore, when the user uses water, for example, Users who do not need to install a special device such as a tap can use the water in the tank 65 simply by opening the faucet 68.

[0106] Further, when the water purification apparatus 1 is operated by solar energy, it is prepared for use at night by creating purified water during daylight hours.

In the third embodiment, the tank 65 is installed on a dedicated steel tower or the like, but may be installed on the roof of the house 77, for example. Further, the water stored in the tank 65 is not limited to the water source pumped up by the tank pump 66. For example, rainwater can be stored in the tank 65. Furthermore, the tank 65 was taken as an example. However, if the water storage pipe 69 and the user water supply pipe 67 were omitted and the tank 65 was replaced with, for example, a pool or a bathtub, the tank 65 could be stored in the pool or the bathtub. Since germs contained in the water can be removed through the purification process, clean water can be stored without periodic water replacement.

FIG. 16 is a system diagram showing a configuration example of an ozone water generator 70 according to the fourth embodiment. Note that portions overlapping those in FIGS. 1 and 2 are denoted by the same reference numerals and description thereof is omitted. In the system diagram of FIG. 16, the solid arrows indicate the flow of water and the broken arrows indicate the flow of electricity.

[0107] The ozone water generating apparatus 70 according to the fourth embodiment includes a tank 65 for storing tap water, a pump 5 for sucking the water stored in the tank 65 through the suction pipe 4, and a pump. A water ozone mixing device 2 for mixing ozone with water discharged from the pump 5 and sent through the raw water supply pipe 6, and a purified water supply pipe 9 for releasing the ozone water generated by the water ozone mixing device 2, It has. In the present invention, the purified water supply pipe 9 corresponds to an ozone water output pipe.

More specifically, the water source 3 of the water purification apparatus 1 shown in FIG. 2 is replaced with a tank 65, and the ozone deodorizing column 10 is omitted. The tank 65 stores, for example, tap water. Therefore, the tap water stored in the tank 65 is mixed with ozone in the water ozone mixing device 2 and released from the purified water supply pipe 9 as ozone water with excellent sterilization * deodorizing function. Further, in the water purification apparatus 1 shown in FIG. 2, the pump 5 is installed outside the casing 27. However, in the ozone water generating apparatus 70, the parts including the tank 65 and the pump 5 are, for example, And the ends of the purified water supply pipe 9 and the intake pipe 22 are exposed from the mobile casing 72. Therefore, when the user wants to use ozone water, for example, a faucet or a shower nozzle is attached to the end of the purified water supply pipe 9 to wash hands and feet with ozone water or to spray ozone water. can do.

[0109] Furthermore, when the mobile casing 72 is used as described above, it can be easily carried. For example, after placing the fresh fish on a loading platform such as a truck for transporting fresh fish, and then sprinkling the fresh fish into the box, the sanitary box can be sterilized, deodorized, slimmed, etc. can do. The ozone water used by the user is generated by the same method as in the first embodiment.

FIG. 17 is a front perspective view of the casing 27 in the water purification apparatus 1 according to the fifth embodiment. FIG. 18 is a front perspective view of the inside of the housing 27. FIG. 19 is a plan view of the inside of the housing 2. FIG. 20 shows a mode in which the ozone generator 21 is arranged above the control unit 49 in FIG.

[0110] In the water purification apparatus 1 according to the fifth embodiment, as shown in Fig. 17, the casing 27 has a longitudinal direction extending in the left-right direction (a direction connecting the front side and the rear side of the casing 27). ) Is formed in a thin box shape, and the operation display unit 55 described above is arranged on the upper right side of the front. In the case 27, the back portion on the back side is fixed to a wall or the like as an installation surface. The inlet 12 of the ozone mixer 7 is provided so as to protrude outward from the right side of the casing 27, and the outlet 13 of the ozone mixer 7 (see FIG. 18) is provided on the left side of the casing 27. ) Is connected to the connecting pipe 183 (described later) so as to protrude outward from the left side surface of the housing 27.

As shown in FIG. 18, the inside of the casing 27 is partitioned into a substantially rectangular parallelepiped shape, and a blocking wall 180 extending in the horizontal direction is provided at a substantially central position in the vertical direction. The blocking wall 180 is a rectangular thin plate having a size substantially equal to the planar shape of the casing 27 in plan view. Thus, the inside of the casing 27 is partitioned into two regions arranged in the vertical direction by the blocking wall 180. In the following, of the two areas partitioned inside the casing 27, the upper area is referred to as an electrical component area 181 and the lower area is referred to as a water channel area 182.

[0112] The water channel region 182 includes an ozone mixer 7 and a connecting pipe 183 (collectively referred to as a water channel 187). As shown in FIG. 19, the front side of the casing 27 (that is, the front side, the lower side in FIG. 19) ). The connecting pipe 183 is a circular pipe extending substantially horizontally in the left-right direction, and the above-described connecting-side outlet 184 is provided at the left end, and the connecting-side inlet 185 is provided at the right end. In the connecting pipe 183, the connecting side outlet 184 is connected to the purified water supply pipe 9 (see FIG. 2) outside the housing 27, and the connecting side inlet 185 is connected to the outlet 13 of the ozone mixer 7. . The inlet 12 of the ozone mixer 7 is connected to the raw water supply pipe 6 (see Fig. 2) outside the casing 27, and in this water channel 187, water flows from the right side to the left side.

[0113] The water flow path 14 of the ozone mixer 7 is also formed to extend substantially horizontally in the left-right direction, like the connecting pipe 183. Therefore, the water channel 187 is formed so as to extend substantially horizontally in the left-right direction as a whole.

In the ozone mixer 7, the check valve 17 and the drain valve 36 shown in FIG. 18 can be removed during maintenance!

[0114] The electrical component region 181 is blocked from the water channel 187 by the blocking wall 180, and the above-described ozone generating device 21 and the control unit 49 are connected to the rear side (that is, the back) of the casing 27 as shown in FIG. It is arranged on the surface side, the upper side in FIG. Specifically, as shown in FIG. 18, in front view, the ozone generator 21 is disposed on the left side of the electrical component region 181, and the control unit 49 is arranged on the right side of the ozone generator 21 such that In addition, it is disposed above the ozone mixer 7 with the blocking wall 180 interposed therebetween.

[0115] The ozone supply pipe 24 of the ozone generator 21 is made of a flexible material, specifically, Teflon (registered trademark) or silicon rubber having excellent durability against ozone degradation. It extends downward from the ozone generator 21, passes through a through hole 191 formed in the blocking wall 180, extends obliquely downward to the right, and is connected to the inlet 19 of the ozone mixer 7. Thus, in the fifth embodiment, the electrical components such as the ozone generator 21 and the control unit 49 are arranged in the electrical component region 181 partitioned above the water channel 187. Even if water leaks out, the leaked water will not reach the ozone generator 21 and the control unit 49 by its own weight. Furthermore, since the electrical component region 181 is blocked from the water channel 187 by the blocking wall 180, for example, even if water scatters from the water channel 187 during maintenance, the water remains in the ozone generator 21 and the control unit 49. It is possible to reliably prevent water from entering the water.

[0117] In particular, the blocking wall 180 is disposed above a portion where water leakage may occur, such as a coupling portion between the water channel 187 and the ozone mixer 7 (that is, the vicinity of the outflow port 13 and the connection side inlet 185). Therefore, the ozone generator 21 and the control unit 49 can be more reliably prevented from being flooded. In addition, as described above, in the ozone mixer 7, the check valve 17 and the drain valve 36 can be removed during maintenance. Therefore, there is a coupling portion between these removable parts and the water channel 187. Exists. Although there is a risk of water leakage at these joints, the blocking wall 180 is disposed above the check valve 17 and the drain valve 36, so that the ozone generator 21 and the control unit 49 are further submerged. It can be surely prevented. Note that the through-hole 191 of the blocking wall 180 through which the above-described ozone supply pipe 24 penetrates is located at a position where the above-mentioned coupling partial force is also separated, so that even if water leaks, water is electrically connected through this through-hole 191. There is no risk of entering product area 181.

[0118] The water channel 187 extending substantially horizontally in the left-right direction in the housing 27 has no refracting portion. If there is a refracted part, it is necessary to provide a separate connecting part such as an elbow tube. In addition, the water channel 187 of the present invention eliminates these defects, and can more reliably prevent the ozone generator 21 and the control unit 49 from being flooded.

[0119] In addition, the inlet 12 of the ozone mixer 7 forming one end of the water channel 187 protrudes outward from the right side surface of the housing 27 and is connected to the raw water supply pipe 6 (see Fig. 2) outside the housing 27. The connection side outlet 184 of the connection pipe 183 forming the other end in the water channel 187 protrudes outward from the left side surface of the housing 27 and is connected to the purified water supply pipe 9 (see FIG. 2) outside the housing 27. ing. In this way, the inlet 12 and the connection that are connected to the raw water supply pipe 6 and the purified water supply pipe 9 are connected. The side outlet 184 may cause water leakage, but both the inlet 12 and the connecting side outlet 184 are provided so as to protrude outward from the side surface of the casing 27. It is not located inside. Therefore, even if water leakage occurs at the inlet 12 and the connection-side outlet 184, it is possible to more reliably prevent the ozone generator 21 and the controller 49 inside the casing 27 from being flooded.

[0120] In addition, since the inlet 12 of the ozone mixer 7 is provided on the right side of the casing 27 and the connection side outlet 184 of the connecting pipe 183 is provided on the left side of the casing 27, the water channel 187 Is supported on both side surfaces of the casing 27 in the left-right direction, so that it can be stably disposed in the casing 27, and the water channel 187 can be easily and assembled to the casing 27. The ozone mixer 7 has a boss portion 192 that extends upward. The boss portion 192 is fixed to the blocking wall 180 with a screw or the like. Are also supported (see Figure 18).

[0121] Further, since the inlet 12 of the ozone mixer 7 is coupled to the water channel 187 so as to constitute one end of the water channel 187, compared with the case where the ozone mixer 7 is coupled in the middle of the water channel 187. It is possible to reduce the portion where the ozone mixer 7 and the water channel 187 are joined, that is, the portion where water leakage may occur, and more reliably prevent the ozone generator 21 and the control unit 49 from entering the water. it can. In order to achieve the same effect, the outlet 13 of the ozone mixer 7 may constitute the other end of the water channel 187 (that is, the connection side outlet 184 in FIG. 18). In this case, the connecting pipe 183 is omitted, and the water flow path 14 of the ozone mixer 7 is extended so that the outlet 13 protrudes outward from the left side surface of the casing 27. Of course, if the water flow path 14 force water flow path 187 of the ozone mixer 7 is configured, the above-described connecting portion can be eliminated, and the ozone generator 21 and the control unit 49 can be more reliably prevented from being flooded. .

[0122] In addition, the electrical components such as the ozone generator 21 and the control unit 49 have a back side of the casing 27 (that is, the rear side, the upper side in FIG. 19) as shown in FIG. It is desirable to be arranged in. On the other hand, since the water channel 187 is arranged on the front side (that is, the front side, the lower side in FIG. 19), maintenance can be easily performed. In addition, due to such an arrangement relationship, there is a gap between the ozone generator 21 and the control unit 49 arranged on the back side and the water channel 187 arranged on the near side, so that water leaked from the water channel 187. Even so, it is possible to reliably prevent the ozone generator 21 and the control unit 49 from being flooded. [0123] When the ozone generator 21 is disposed above the ozone mixer 7, the distance between the ozone generator 21 and the ozone mixer 7 is relatively narrow. In this case, the ozone supply pipe 24 cannot be connected between the ozone generator 21 and the ozone mixer 7 with an appropriate curvature, and is bent unnaturally on the way. There is a risk that the mixer 7 cannot be supplied smoothly. However, in the present invention, as shown in FIG. 18, the control unit 49 is arranged above the ozone mixer 7, and the ozone generator 21 is arranged so as to be arranged on the left side of the control unit 49. ing. As a result, the distance between the ozone generator 21 and the ozone mixer 7 can be made relatively wide, so that the ozone supply pipe 24 connects the ozone generator 21 and the ozone mixer 7 with an appropriate curvature. The ozone from the ozone generator 21 can be smoothly supplied to the ozone mixer 7.

[0124] Further, the water in the water passage 18 7 (specifically, the water passage 14) that has entered the gas passage 16 from the outlet 20 of the ozone mixer 7 shown in FIG. However, as shown in FIG. 18, the inlet 19 is connected to the ozone supply pipe 24 obliquely upward. Therefore, the water that has entered the gas passage 16 does not reach the ozone generator 21 via the inlet 19 and the ozone supply pipe 24. Therefore, the ozone generator 21 can be reliably prevented from entering the water, and the water that has entered the gas passage 16 can be reliably drained by the drain pipe 35 shown in FIG.

Further, as shown in FIG. 18, in the electrical component region 181, the ozone generator 21 and the control unit 49 are arranged in the left-right direction. Instead, as shown in FIG. The ozone generator 21 may be disposed above the control unit 49. The ozone generator 21 is placed above the force control unit 49 that needs to take measures against flooding more than other electrical components. Infiltration of water can be prevented more reliably. Furthermore, since the casing 27 can be made smaller (narrower) in the left-right direction than the configuration shown in FIG. 18, the water channel 187 can be configured only by the ozone mixer 7.

FIG. 21 is a front perspective view of the water purification device 1 according to the sixth embodiment. [0126] As shown in FIG. 21, in the water purification apparatus 1 according to the sixth embodiment, the above-described purification is arranged inside a lattice-shaped frame 190 as a member to be assembled, which forms a rectangular parallelepiped that is long in the vertical direction.匕 Equipment (case 27, operation display 55 located in case 27, ozone generator 21, ozone mixer 7 and controller 49), suction pipe 4, pump 5 and raw water supply pipe 6 are assembled. It has been. Note that the casing 27 and the internal structure of the casing 27 according to the sixth embodiment are the same as those shown in the fifth embodiment. In FIG. 21, the ozone generator 21, the ozone mixer 7, and the control unit 49 are not shown (see FIG. 18).

[0127] The casing 27 is disposed at the upper end on the front side of the frame 190. The pump 5 is disposed at a lower position than the casing 27, specifically, at the lower right end of the frame 190. Note that the pressure sensor 11 described above is disposed adjacent to the upper left side of the pump 5.

In the right side view, the raw water supply pipe 6 extends from the pump 5 to the left side while winding a clockwise spiral three times. Each spiral portion of the raw water supply pipe 6 is formed in a substantially rectangular shape that is long in the vertical direction when viewed from the right side, and a long cylindrical filter 189 in the vertical direction is formed on the back side of each spiral portion. One by one is inserted. That is, in the raw water supply pipe 6, three filters 189 are arranged in series. Here, the pressure sensor 11 described above detects the pressure of water flowing from the pump 5 to the filter 189 located at the right end in the frame 190. The pressure value detected by the pressure sensor 11 is given to the control unit 49 described above.

The raw water supply pipe 6 extends downward from the filter 189 located at the left end in the frame 190, refracts and extends upward, and is connected to the water channel 187 of the casing 27. A manual valve 188 is inserted in the vicinity of the portion connected to the water channel 187 in the raw water supply pipe 6. By manually opening and closing the manual nozzle 188, the raw water supply pipe 6 can be opened or shut off. The manual valve 188 is also inserted in the raw water supply pipe 6 in the vicinity of the pressure sensor 11.

[0129] Although not shown, the tank 65 shown in the third and fourth embodiments is disposed above the frame 190, and the suction pipe 4 extends downward from the tank 65 and is pumped. Connected to 5. The casing 27 described above is adjacent to the tank 65 below. In the water purification apparatus 1, the water stored in the tank 65 flows downward in the suction pipe 4, is sucked into the power pump 5, and is discharged to the raw water supply pipe 6. The water then spirals along the shape of the raw water supply pipe 6 in the raw water supply pipe 6 and further flows to the left while removing foreign substances (iron, manganese components, etc.) by the filter 189. Reach 27 waterways 187. As shown in FIG. 18, the water that has reached the water channel 187 is purified by being mixed with ozone in the ozone mixer 7, and then the purified water supply pipe 9 connected to the water channel 187 (see FIGS. 2, 15, and 16). ) And supplied to the user use side as described above.

Thus, in the water purification apparatus 1 according to the sixth embodiment, as shown in FIG. 21, the purification apparatus (the casing 27 and the operation display unit 55 arranged in the casing 27, As described above, the ozone generator 21, the ozone mixer 7, and the control unit 49) are disposed as close as possible to the tank 65, so that the height difference between the purification apparatus and the tank 65 can be reduced. It is possible to reduce the loss of the head when the water stored in the tank 65 reaches the purifier. As a result, the pressure loss of the water flowing through the ozone mixer 7 of the purification device can be prevented, so that the decrease in the suction flow rate of ozone into the ozone mixer 7 can be suppressed and the efficiency of gas-liquid mixing can be prevented from decreasing. be able to. Therefore, this water purification device 1 can improve the water quality satisfactorily with a simple configuration.

[0131] Further, since the pump 5 which is generally a heavy object is disposed at a position lower than the purification device, the posture of the water purification device 1 can be stabilized.

In addition, since the water in which foreign matter has been captured by the filter 189 is introduced into the purification device, it is possible to prevent the foreign matter from being clogged in a portion where water flows inside the purification device, such as the ozone mixer 7.

And since this filter 189 is provided in the middle of the raw | natural water feed pipe 6, it is arrange | positioned upstream from the purification apparatus seeing in the direction through which water flows. Generally, when water passes through the filter 189, the filter 189 becomes a resistance, so that pressure loss occurs in water near the filter 189. Therefore, in the case where the filter 189 is disposed downstream of the purification apparatus, the pressure loss described above occurs on the downstream side of the purification apparatus, so that the ozone suction flow rate into the ozone mixer 7 is reduced. Concerned. However, in the present invention, since the filter 189 is disposed upstream of the purification apparatus, the ozone suction flow rate to the ozone mixer 7 is reduced. And the above-described reduction in the efficiency of gas-liquid mixing can be prevented. As a result, the water purification apparatus 1 can improve the water quality satisfactorily with a simple configuration.

[0132] Further, as described above, the pressure sensor 11 detects the pressure of water flowing from the pump 5 to the filter 189 positioned at the right end in the frame 190, and this pressure value is To the control unit 49. Since the pressure value increases when the filter 189 is clogged, the control unit 49 determines that the filter 189 is clogged when the pressure value detected by the pressure sensor 11 rises to a predetermined value. When the control unit 49 determines that the filter 189 is clogged, a filter clogging LED (not shown) provided in the operation display unit 55 is turned on to notify the user of the clogging of the filter 189. Here, the operation display unit 55 functions as a notification unit. Instead of a filter clogging LED (not shown), a buzzer or the like may be used to notify the user with sound.

[0133] That is, when the filter 189 is clogged, the flow of water in the raw water supply pipe 6 and the purification device deteriorates, so that ozone mixed with water in the ozone mixer 7 is transferred to the ozone mixer 7. There is concern about a decrease in the suction flow rate. However, in the present invention, the pressure sensor 11 can manage the clogged state of the filter 189 by detecting the pressure of the water flowing between the pump 5 and the filter 189. Then, the control unit 49 determines that the filter 189 is clogged according to the pressure value detected by the pressure sensor 11, and the operation display unit 55 notifies that the filter 189 is clogged according to the determination. Therefore, the filter 189 can be prevented from being accidentally clogged, so that the above-described decrease in the ozone suction flow rate can be suppressed, and the decrease in the gas-liquid mixing efficiency can be prevented.

[0134] Further, as the tank 65 is arranged at a higher position, as described above, there is a concern that the ozone suction flow rate into the ozone mixer 7 decreases. If the filter 189 is clogged there, there is a concern that the ozone suction flow rate into the ozone mixer 7 may further decrease. Therefore, in order to prevent a decrease in the ozone suction flow rate due to the clogging of the filter 1 89, it is desirable to detect the clogging of the filter 189 as soon as possible, but the pump 5 is disposed at a position lower than the tank 65. In this configuration, the higher the tank 65 is located, the higher the pressure value is detected by the pressure sensor 11, so that the filter 189 is determined to be clogged earlier than the actual one and notified to the user. As a result, the ozone mixer 7 caused by clogging of the filter 189 It is possible to prevent a decrease in the suction flow rate.

(Ozone mixer)

FIG. 22 is a side sectional view of the ozone mixer 7 according to the seventh embodiment. In FIG. 22, solid line arrows represent water flow, and broken line arrows represent gas flow. In addition, the same parts as those in FIG.

[0135] As shown in FIG. 22, the inlet 19 of the three-way branch 18 is preferably directed obliquely upward. Further, it is desirable that the ozone generator 21 is disposed above the connection portion between the ozone supply pipe 24 (see FIG. 2) and the inlet 19.

As a result, even if the water in the water flow path 14 that has entered the gas passage 16 through the outlet 20 reaches the inlet 19, the water passes through the inlet 19 and the ozone supply pipe 24 (see FIG. 2). There should be no fault reaching generator 21 (see Figure 2). Therefore, the ozone generator 21 is reliably prevented from being flooded, and the water in the water passage 14 that has entered the gas passage 16 is surely drained through the drain 34 through the drain 35 (see Fig. 5). Can do.

(Check valve)

FIG. 23 is a view of the inside of the valve chamber 29 as viewed from below in the check valve 17 used in the ozone mixer 7 according to the seventh embodiment. FIG. 24 is an upper perspective view of the arch valve 81 arranged in the valve chamber 29. FIG. FIG. 25 is an upper perspective view of the inside of the valve chamber 29 in a state where the arch valve 81 is arranged. FIG. 26 is an illustrative view of the check valve 17 according to the seventh embodiment, and FIG. 26 (a) shows a state when water is not flowing in the water flow path 14 (hereinafter, normal time). FIG. 26 (b) shows a state when water is flowing through the water flow path 14 (hereinafter referred to as suction). In FIG. 26, the broken arrow indicates the gas flow.

In the check valve 17 according to the seventh embodiment, the valve chamber 29 has a divided structure. As shown in FIG. 22, the upper part 82 and the lower part 83 are arranged in order from the water channel 14 side. In the valve chamber 29, instead of the above-described ball valve 30 and spring 33 (see FIG. 4), a arch valve 81 as a valve body is accommodated.

The upper part 82 is formed in a substantially hollow cylindrical shape, and its upper end is connected to the water flow path 14. A screw portion is formed on the outer peripheral surface of the upper part 82. And the upper part 82 The hollow portion is composed of a substantially conical region (conical region 85) tapered toward the upper side and a substantially cylindrical region (referred to as cylindrical region 86) continuing downward from the conical region 85. It is configured.

[0137] Further, in detail, at the upper end of the conical region 85, a substantially cylindrical region (referred to as a small cylindrical region 87) extending upward, and a water flow path extending upward from the upper end of the small cylindrical region 87. As shown in FIG. 23, a slit-like region (referred to as a slit region 88) that is rectangular in a bottom view is formed. Note that, as shown in FIG. 22, the connecting partial force between the slit region 88 and the throttle portion 15 is the outlet 20 described above.

[0138] On the inner peripheral surface of the upper part 82, as shown in FIG. 23, four protrusions 89 are spaced at equal intervals on the periphery so as to form a cross around the small cylindrical region 87 in the bottom view. Each provided protrusion 89 is formed in a thin plate shape of a substantially parallelogram that is long in the vertical direction (see FIG. 22), and the upper end corresponds to the conical region 85 of the inner peripheral surface of the upper part 82. Connected to Further, the outer end of each protrusion 89 in the radial direction of the inner peripheral surface of the upper part 82 is connected to a portion corresponding to the cylindrical region 86 on the inner peripheral surface of the upper part 82. The lower end edge of each projection 89 is formed so as to incline downward in the middle after extending horizontally from the inside to the outside as seen in the radial direction of the inner peripheral surface of the upper part 82 described above. Hereinafter, the horizontally extending portion of the lower edge of each projection 89 is referred to as a horizontal portion 90, and the inclined portion is referred to as an inclined portion 91.

[0139] As shown in Fig. 22, the lower part 83 includes a substantially hollow cylindrical large-diameter cylindrical portion 92 larger in diameter than the upper part 82, and the inlet 31 of the check valve 17 described above (see Fig. 4). It is integrally formed with a narrow tube 93 that is connected to the lower end portion of the large-diameter cylindrical portion 92 through and extends downward.

A threaded portion is formed on the inner peripheral surface of the large-diameter cylindrical portion 92. The bottom wall (lower side wall) of the large-diameter cylindrical portion 92 is formed with an inlet 31 at the center position in the radial direction, and a valve mounting surface 95 surrounding the inlet 31 is formed. The valve mounting surface 95 is formed in an annular shape in a plan view and flat in the horizontal direction, and a contact portion 96 that protrudes upward along the outer peripheral edge thereof is integrated with the valve mounting surface 95. Is formed.

The narrow pipe 93 is connected to the drain pipe 35 (see FIG. 5) described above. As shown in FIG. 24, the arch valve 81 is formed in a substantially disk shape made of Teflon (registered trademark) or silicon rubber having excellent durability against ozone degradation, and has an upper surface (pressurized surface 99). Is formed so as to be convexly curved when directed upward, and the lower surface (referred to as sealing surface 100) is formed flat in the horizontal direction. The pressurized surface 99 is provided with an annular inertial convex portion 101 that protrudes upward in a plan view.

When assembling such a check valve 17, first, as shown in FIG. 25, the arch valve 81 is mounted on the mounting surface 95 of the lower part 83. At this time, the sealing surface 100 of the arch valve 81 uniformly contacts the valve mounting surface 95 to seal the inlet 31. Then, the lower part 83 is assembled to the upper part 82 by screwing the screw part formed on the inner peripheral surface of the lower part 83 into the screw part formed on the outer peripheral surface of the upper part 82.

[0142] When the lower part 83 is assembled to the upper part 82, the contact part 96 of the lower part 83 is fitted to the lower end of the inner peripheral surface of the upper part 82, so that the lower part 83 becomes the upper part 82. It is positioned with respect to it. Further, on the outer side in the radial direction from the contact part 96, the upper surface of the bottom wall of the lower part 83 is pressed against the lower end surface of the upper part 82 with a notch 102 interposed therebetween without any gap. As a result, the inside of the valve chamber 29 described above is separated from the outside by the hollow part (conical region 85 and cylindrical region 86) of the upper part 82 and the valve mounting surface 95 and the contact part 96 of the lower part 83. It is formed airtight and liquidtight.

Then, as shown in FIG. 26 (a), the arch valve 81 accommodated in the valve chamber 29 is slightly lowered downward by the horizontal portion 90 of each projection 89 of the upper part 82 as shown in FIG. Other than being pressed, the valve chamber 29 is arranged in a free state that can move up and down. That is, the arch valve 81 is not supported by other members in the valve chamber 29 (that is, the gas passage 16). Since the operation frequency of the arch valve 81 is relatively high for the use of the check valve 17, the support portion is damaged in the case of being supported by V and other members in the valve chamber 29. However, since the arch valve 81 of the present invention is not supported by other members in the valve chamber 29, the above-described supporting portion does not exist, and there is no risk of damage.

In addition, the inertial convex portion 101 of the arch valve 81 is surrounded by the inclined portion 91 of each projection 89 in the horizontal direction so that the horizontal position of the arch valve 81 is defined by each projection 89. It is prevented from shifting. Therefore, the arch valve 81 is sealed in the valve chamber 29. The stop surface 100 can always be disposed at an appropriate position where the inlet 31 can be sealed (that is, a gas passage 16 to be described later can be opened and closed), and the operation reliability of the check valve 17 can be improved.

[0145] In a state where the arch valve 81 is disposed in the valve chamber 29, the inertial convex portion 101 is in the normal state (see Fig. 26 (a)), as described above, the horizontal portion 90 of each projection 89 The arch valve 81 itself, more specifically, the sealing surface 100 is urged toward the inlet 31. Further, the weight of the arch valve 81 is also used to bias the sealing surface 100 toward the inlet 31. As a result, the inlet 31 is sealed by the sealing surface 100 and the gas passage 16 is blocked (closed). Therefore, even if water from the water flow path 14 (see FIG. 22) enters the valve chamber 29, the water is blocked in the valve chamber 29.

Specifically, as described above, the arch valve 81 has a pressurized surface 99 that is convexly curved upward. Due to the structure of the ozone mixer 7, the water in the water channel 14 may leak downward into the gas channel 16 from the outlet 20 that joins the water channel 14 (see FIG. 22). Force assumed to pressurize the pressurizing surface 99 Since the pressurized surface 99 is convexly curved upward, the pressurized surface 99 can release the water pressure from the water flow path 14 to the surroundings. For example, when the pressurized surface 99 is uniformly flat from the outer edge (radially outer side) to the inner center, the pressure of water from the water channel 14 cannot be released to the surroundings. For this reason, if the inner portion of the pressure-receiving surface 99 cannot withstand the pressure, the arch valve 81 as a whole stagnate and the arch valve 81 cannot completely close the gas passage 16 (that is, the sealing surface 100 and the inlet 31 of the valve chamber 29). There is a possibility that a back flow of water may occur. However, as described above, the pressurized surface 99 of the arch valve 81 of the present invention is convexly curved in the direction (upward) opposite to the direction in which water leaks out. Even if the pressure of water that has risen rapidly is applied to the surface 99 to be pressurized, the pressure is released to the surroundings, so that the arch valve 81 can maintain its entire shape without stagnation. Therefore, the arch valve 81 completely closes the gas passage 16 (that is, the sealing surface 100 seals the inlet 31 without a gap), and can reliably prevent backflow of water. If the pressurized surface 99 is formed so as to release the pressure of water that pressurizes the pressurized surface 99 to the surroundings, it may be convexly curved as described above! .

[0147] Then, as described above, the inertial convex portion 101 of the pressed surface 99 is pressed against each projection 89. And the arch valve 81 is urged to close the gas passage 16. For example, in the case of extremely low pressure water, contrary to the water hammer phenomenon described above, this water is connected between the arch valve 81 closing the gas passage 16 and the gas passage 16 (see May flow back through a minute gap between the sealing surface 100 and the inlet 31). However, the inertial convex portion 101 is pressed by the projections 89 to urge the arch valve 81 to close the gas passage 16 (that is, the sealing surface 100 is directed toward the inlet 31). Therefore, the minute gap described above is eliminated, and the backflow of water can be reliably prevented.

[0148] Therefore, the reverse flow of water can be reliably prevented by the inertial convex portion 101 and the pressurized surface 99 convexly curved upward regardless of the water pressure.

Further, the inertial convex portion 101 is pressed locally by each projection 89 (that is, at four positions on the circumference corresponding to each projection 89), so that the pressing force is concentrated and acted on locally. Therefore, it can be easily elastically deformed even with a small pressing force, and the sealing surface 100 is urged toward the inlet 31 to reliably eliminate the gap between the sealing surface 100 and the inlet 31.

On the other hand, at the time of suction, as shown in FIG. 26 (b), the arch valve 81 is sucked by negative pressure.

As a result, the arch valve 81 floats upward against the biasing force of the inertial convex portion 101 pressed by each projection 89, and the inlet 31 sealed by the sealing surface 100 is connected to the inside of the valve chamber 29. As a result, the gas passage 16 is completed (opened). Therefore, as with the check valve 17 in Fig. 4 (b), the ozone generator 21 → the ozone supply pipe 24 → the inlet 19 of the three-way branch 18 → the gas passage 16 and the force path communicate with each other. Is supplied to the gas passage 16.

[0150] Thus, in the check valve 17 according to the seventh embodiment, the arch valve 81 is driven by the ozone supply pressure (the negative pressure described above) during ozone supply (see FIG. 26 (b)). By opening the gas passage 16, as shown in FIG. 22, it is possible to allow ozone supplied from the inlet 19 of the three-way branch 18 to the gas passage 16 to pass upward toward the outlet 20. On the other hand, when ozone is not supplied (see Fig. 26 (a)), the arch valve 81 closes the gas passage 16 by its own weight and the urging force of the inertial convex portion 101, so that the reverse direction of water (Fig. 26). The passage (backward flow) in the downward direction in (a) can be prevented. In other words, the check valve 17 having such a simple configuration can automatically open and close the gas passage 16 and prevent back flow of water without any external operation. (Drain valve)

Fig. 27 shows the drain valve 36 extracted from Fig. 22, where Fig. 27 (a) shows the normal state, Fig. 27 (b) shows the state during suction, and Fig. 27 (c ) Indicates the state when draining. In FIG. 27, the direction of the inlet 19 is shown in the opposite direction to that shown in FIG. FIG. 28 is an upper perspective view of the stopper 47 inside the valve chamber 38.

In the drain valve 36 according to the seventh embodiment, as shown in FIG. 27, the inside of the valve chamber 38 as a storage chamber is formed in a cylindrical shape whose upper portion is convexly curved upward. Further, the above-described outlet 42 is formed in a circular shape at the center position of the bottom wall of the valve chamber 38. A stopper 47 as a receiving member provided in the valve chamber 38 is similar to the internal shape of the valve chamber 38 in a side sectional view and is formed to be convexly curved upward. Specifically, as shown in FIG. 28, the stocker 47 is configured by six pairs of ribs 105 provided radially on the bottom wall of the valve chamber 38 so as to surround the outlet 42. Each of the ribs 105 is formed so as to gently descend as the radial force of the upper surface force outlet 42 is directed outward (see FIG. 27). To do. That is, the receiving surface 103 forms the convex curved portion of the stopper 47 described above. A drainage groove 104 is formed between the pair of ribs 105.

[0152] As shown in Fig. 27, the disc valve 46 serving as a blocking member is made of a flexible material. Normally, as shown in Fig. 27 (a), in the valve chamber 38, It is received by the stopper 47 so as to be placed on the receiving surface 103. In this state, the peripheral edge of the disc valve 46 is in contact with or close to the inner wall of the valve chamber 38, for example, with a gap of less than 1 mm, preferably about 0.3 mm.

[0153] At the time of suction, as shown in Fig. 27 (b), the disk valve 46 is sucked by negative pressure and the inlet 40 is closed, so that the drain pipe 35 is opened as in the first embodiment. It is blocked (see Fig. 6 (b)). At this time, the disc valve 46 is held so as to conform to the above-described top surface shape of the internal shape of the valve chamber 38. Here, at the position on the inner peripheral surface of the drain pipe 35 close to the inlet 40, three detachment prevention ribs 106 are projected on the same circumference so as to protrude toward the center of the drain pipe 35. These separation prevention ribs 106 are provided at intervals, and the disk valve 46 is prevented from being sucked into the drain pipe 35 during suction. [0154] As described above, in this drain valve 36, in the normal state shown in Fig. 27 (a), the disk valve 46 force S is in contact with or close to the inner wall of the valve chamber 38. There is almost no gap between the inlet 40 and the outlet 42 (corresponding to the gap 48 in FIG. 6). However, since the receiving surface 103 on which the disc valve 46 is placed is convexly curved upward, the peripheral side (the portion of the upper surface of each rib 105 away from the outlet 42) is the center side (each rib 105). Compared with the portion on the outlet 42 side of the upper surface), a gap can be secured between the receiving surface 103 and the inner wall of the valve chamber 38 at the peripheral portion. Therefore, at the time of draining as shown in FIG. 27 (c), the water flowing into the valve chamber 38 from the inlet 40 presses the disc valve 46, so that the peripheral partial force of the disc valve 46 stagnates in the gap described above. As a result, contact between the inner wall of the valve chamber 38 and the disc valve 46 is eliminated, and the gap 48 described above is formed between the inner wall of the valve chamber 38 and the disc valve 46. As a result, the inlet 40 and the outlet 42 communicate with each other and the drain pipe 35 is opened, so that the water flowing into the valve chamber 38 passes through the drain grooves 104 and reaches the outlet 42, and the drain pipe 35 It is drained through.

That is, according to the drain valve 36 according to the seventh embodiment, the disc valve 46 is in contact with or close to the inner wall of the valve chamber 38 during normal times (except during draining and during suction). Therefore, even if the pressure change in the drain pipe 35 during suction (the negative pressure described above) is small, it can operate reliably, the inlet 40 can be blocked and the drain pipe 35 can be shut off. Can be reliably prevented.

[0156] Further, the disc valve 46 is flexible, and when drained, the disc valve 46 is pressed against the flowing water and squeezed between the inner wall of the valve chamber 38 and the disc valve 46. Since the drain pipe 35 is opened by forming the gap 48 described above, smooth drainage in the drain pipe 35 can be ensured.

In addition, in the receiving surface 103 that is convex upward in the direction opposite to the direction in which water flows out during drainage (outflow direction), the peripheral side of the receiving surface 103 is downstream in the water outflow direction compared to the center side ( Therefore, a gap can be secured between the receiving surface 103 and the inner wall of the valve chamber 38 at the peripheral edge portion. Therefore, at the time of drainage, the drain valve 35 can be reliably opened by bending the disc valve 46 until the contact between the inner wall of the valve chamber 38 and the disc valve 46 is eliminated in this gap. <Eighth embodiment>

As shown in FIG. 3, in the check valve 17 (see FIG. 4), when foreign matter is clogged in the valve chamber 29, the check valve 17 causes the gas passage 16 (for details 3 There is a risk that it will be difficult to prevent the backflow of water (water leakage) to the side branch 18). If the amount of water flowing back is relatively large, the water may reach the ozone generator 21 from the inlet 19 of the three-way branch 18 and the ozone generator 21 may get wet (see Fig. 2). ). If the ozone generating device 21 is turned on in this state, there is a risk that electric discharge cannot be performed or electric leakage occurs as described above.

[0157] Here, when water is flowing in the water flow path 14, the inside of the throttle portion 15 has a negative pressure. In other words, backflow is likely to occur when water is not flowing through the water channel 14. Therefore, by using this negative pressure, the water that has reached the ozone generator 21 can be returned into the throttle section 15. Specifically, the control unit 49 is set for a predetermined time (for example, 10 seconds or more, assuming that the flow of water at the throttle unit 15 is the slowest) before turning on the ozone generator 21. Meanwhile, the pump 5 is driven to allow water to flow through the water flow path 14 (throttle section 15) (see FIG. 7). As a result, the inside of the throttle 15 becomes negative pressure, so that the water that has reached the ozone generator 21 that communicates with the throttle 15 via the ozone supply pipe 24 (see FIG. 2) and the gas passage 16 It can be returned to the aperture 15. That is, before the ozone generator 21 is turned on, moisture inside the ozone generator 21 is surely removed. This can reliably prevent the ozone generator 21 from being turned on in a wet state.

[0158] The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. For example, the configuration of the water ozone mixing device 2, the water purification device 1 or the ozone water generation device 70 according to the present invention may be used in a washing machine that performs washing using bath water. It can be used for processing. Further, the configurations shown in the fifth, sixth, seventh and eighth embodiments are not limited to the water purification device 1 but can be applied to the water ozone mixing device 2.

[0159] Further, in the present embodiment, the ozone mixer 7 configured to mix ozone with water is illustrated, but the present invention is not limited thereto, and the ozone mixer 7 can be used as a general-purpose gas-liquid mixer. . The check valve 17 using the arch valve 81 shown in the seventh embodiment is related to the present invention. The present invention can be applied not only to the ozone mixer 7, the water ozone mixing device 2, the water purification device 1, and the ozone water generating device 70, but also to any mechanism that needs to prevent the backflow of fluid.

Claims

The scope of the claims

[1] a pump for drawing water;

Purification equipment for purifying water,

An introduction path for introducing water pumped by the pump into the purification apparatus, and a purified water supply path for outputting purified water purified by the purification apparatus,

The purification device comprises:

A housing, an operation unit provided on an outer surface of the housing, an ozone generator disposed in the housing, a gas-liquid mixer for mixing ozone generated by the ozone generator with water, and the And a control device for controlling the operation of the pump and the ozone generator.

[2] The pump is used to draw raw water.

2. The water purification apparatus according to claim 1, wherein the purified water supply path includes a lead-out path for taking out purified water purified by the purification apparatus.

[3] The water purification according to claim i or 2, wherein the control device controls the operation of the pump and the ozone generator in conjunction with each other based on the water pressure on the discharge side of the pump. apparatus.

[4] The pump is for storing water to be stored as well.

2. The water purification apparatus according to claim 1, wherein the water purification water supply path includes a return path for returning the purified water purified by the purification apparatus to the water storage source.

[5] The water storage source includes a water storage tank for storing domestic water,

The water storage tank is provided with a user water supply pipe for taking out water from the water storage tank,

The water storage tank is arranged at a high place so that water is discharged by gravity when the user water supply pipe is opened,

The pump and the purification device are lower than the water storage tank! 5. The water purification apparatus according to claim 4, wherein the water purification apparatus is disposed at a heel position.

[6] A member to be assembled to which the purification apparatus and the pump are assembled,

The water storage tank is disposed above the assembled member, The purification device is disposed at an upper end of the member to be assembled,

6. The water purification apparatus according to claim 5, wherein the pump is disposed at a position lower than the purification apparatus.

[7] The water purification apparatus according to claim 5 or 6, wherein a filter for capturing foreign matter in water introduced into the purification device is provided in the middle of the introduction path. Equipment

[8] a pressure sensor for detecting the pressure of water flowing between the pump force and the filter;

A control device for judging clogging of the filter according to a pressure value detected by the pressure sensor;

8. The water purifier according to claim 7, further comprising a notifying unit for notifying the clogging of the filter when the control device determines that the filter is clogged.

[9] In the housing,

A water channel having one end connected to the introduction channel and the other end connected to the purified water supply channel;

An electrical component area partitioned above the waterway;

A barrier wall for blocking the electrical component region from the water channel, the gas-liquid mixer is coupled to the water channel, and the ozone generator and the control device are disposed in the electrical component region. The water purifier according to claim 1, wherein the water purifier is characterized by the above.

[10] The water channel extends substantially horizontally in the left-right direction in the housing, and one end projects outwardly from one side surface of the housing and is connected to the introduction channel at the outside, and the other end is the housing. 10. The water purification apparatus according to claim 9, wherein the water purification apparatus protrudes outward from the other side surface and is connected to the purified water supply channel outside.

11. The water purification apparatus according to claim 10, wherein the gas-liquid mixer is coupled to the water channel so as to constitute the one end or the other end of the water channel.

[12] The blocking wall is disposed above the coupling portion of the water channel and the gas-liquid mixer. The water purifier according to claim 9, wherein the water purifier is V.

[13] The waterway includes parts that can be removed during maintenance,

13. The water purification apparatus according to claim 9, wherein the blocking wall is disposed above the component.

[14] The gas-liquid mixer has a water inlet at one end, a water outlet at the other end, a water flow path communicating with the inlet and the outlet, a gas inlet at one end, and the like. A gas outlet having a gas outlet at an end, the gas outlet being joined in the middle of the water flow path;

The ozone generated by the ozone generator is supplied from the gas inlet to the gas passage,

A drainage channel for draining water flowing out of the gas passage when water in the water channel enters from the gas outlet and flows through the gas passage;

An air inflow suppression means for suppressing air from flowing in a direction opposite to the direction in which water flows out of the drainage channel, provided in the drainage channel and supplying ozone to the gas passage. The water purification device according to claim 1, characterized in that:

[15] The gas-liquid mixer has a water inlet at one end, a water outlet at the other end, a water channel communicating the inlet and the outlet, a gas inlet at one end, and the like. A gas outlet at the end, extending upward from the gas inlet toward the gas outlet, and having a gas passage that joins the gas outlet in the middle of the water flow path;

A pressure valve provided in the gas passage, including a check valve for preventing the passage of water from the lower side to the upper side from the gas inlet to the front gas outlet;

2. The check valve according to claim 1, wherein the check valve includes a valve body that opens the gas passage by an ozone supply pressure when ozone is supplied and closes the gas passage by its own weight when ozone is not supplied. Water purification device.

[16] It has a water inlet at one end and a water outlet at the other end. A water flow path that communicates, a gas-liquid mixer having a gas inlet at one end, a gas outlet at the other end, and a gas passage where the gas outlet is joined in the middle of the water flow path; An ozone supply device for supplying the generated ozone from the gas inlet to the gas passage;

An air inflow suppression means for suppressing air from flowing in a direction opposite to the direction in which water flows out of the drainage channel, provided in the drainage channel and supplying ozone to the gas passage. A water ozone mixing device.

[17] The gas-liquid mixer is:

Having a throttle part that is throttled in the middle of the water flow path;

17. The water purifier according to claim 16, wherein the gas outlet is joined to the throttle portion.

[18] The air inflow suppressing means includes:

18. The water purifier according to claim 17, wherein the water purifier is operated by a pressure change in the drainage channel that changes when ozone is sucked into the throttle portion.

[19] The air inflow suppression means includes:

A storage chamber having an inlet at one end and an outlet at the other end, and being inserted in the middle of the drainage channel by connecting the inlet and the outlet to the drainage channel,

A blocking member that is accommodated in the storage chamber, has flexibility, and blocks the drainage path by closing the inlet by a pressure change in the drainage path that changes due to ozone being sucked into the throttle portion. And including

The blocking member is in contact with or close to the inner wall of the storage chamber except when water flows out of the drainage channel and when ozone is sucked into the throttle portion, and water flows out of the drainage channel. In some cases, the drainage channel is opened by being pressed by the flowing water and bending the blocking member to form a gap between the inner wall of the storage chamber and the blocking member. The water purification apparatus according to claim 18.

[20] The water according to claim 19, further comprising a receiving member provided in the accommodation chamber, wherein a receiving surface convexly curved in the opposite direction is formed, and includes a receiving member for receiving the blocking member on the receiving surface. Purification equipment.

[21] a water detection sensor for detecting water drained from the drainage channel;

21. The water purification apparatus according to claim 16, further comprising an ozone supply control means for stopping the ozone supply apparatus in response to detection by the water detection sensor.

[22] A water inlet at one end, a water outlet at the other end, a water flow path communicating the inlet and the outlet, a gas inlet at one end, and a gas outlet at the other end, A gas-liquid mixer having a gas passage that extends upward from the gas inlet toward the gas outlet, and the gas outlet joins in the middle of the water flow path;

An ozone supply device for generating ozone and supplying the generated ozone from the gas inlet to the gas passage;

A check valve provided in the gas passage, for allowing passage of ozone from below to above from the gas inlet to the front gas outlet, and preventing passage of water in the reverse direction;

The check valve includes a valve body that opens the gas passage by ozone supply pressure when ozone is supplied and closes the gas passage by its own weight when ozone is not supplied.

[23] The water purification apparatus according to claim 22, wherein the valve body is accommodated in the gas passage in a freely movable state so as to move up and down, and has an upper surface convexly curved upward. .

[24] The water purification apparatus according to claim 23, wherein a protrusion in contact with the upper surface of the valve body is provided in the gas passage in order to prevent the position of the valve body from shifting. Equipment