JPH07195068A - Water purifying device - Google Patents

Abstract

PURPOSE:To provide a water purifying device lowering pressure loss of air supplied to the purifying device from an air supply means, having high filter media washing performance in a small sized device and also capable of enhancing the washing effect by periodically supplying water at the time of washing the purifying device. CONSTITUTION:Air supplied from a blower 110 is distributed to a purifying sterilization cylinder 11 and a bath 50 by a branch connection 203, and besides distributed to an ejection plate 51 and a returning port 52 by a branch connection 204. The water purified by the purifying sterilization cylinder 11 is flown back to the bath 50 by an electric operated valve 201. Since the air supplied from the blower 110 is distributed to the purifying sterilization cylinder 11 and bath 50 by the branch connection 203 and an air passage from the blower 110 is linearly connected to a bath 50 side requiring sufficient air quantity the pressure loss is low and the sufficient air volume can be supplied to the bath 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification device for purifying water.

[0002]

2. Description of the Related Art In a bath for home use or for business use, it is necessary to replace hot water or clean the bathtub because dirt, floating scales, and bacterial growth occur every time a bath is taken. As a purification device of a water purification device for purifying water in such a bath, there is known a device that combines a photoexcited catalyst and ultraviolet rays to perform purification and sterilization at the same time. Further, for example, a purifying device having a porous ceramic and an ultraviolet sterilizing device having an ultraviolet lamp are combined to adsorb and decompose organic substances in wastewater by microorganisms propagated in the porous ceramic, and sterilize by ultraviolet rays emitted from the ultraviolet lamp. Things are known.

[0003]

However, according to such a conventional water purifier, a method for rotating a stirring rod buried in a filter medium by a drive motor is disclosed as an automatic cleaning technique for the purifier. However, in this technique, the filter medium is liable to be broken, and when the filter medium is fixed, a failure or breakage of the stirring rod due to the eccentricity of the bearing of the drive motor is likely to occur.

The present invention has been made in order to solve such a problem. The filter medium deposits of the purifying device are separated and floated by aeration, and the filter substance deposits are discharged to the outside of the purifying device by a water flow. It is an object of the present invention to provide a water purification device which has a high filter medium cleaning performance in a small device by reducing the pressure loss of the air supplied from the air supply means.

Another object of the present invention is to provide a method for controlling a water purifier which prevents the water level from being lowered by cleaning bubbles in the purifier and improves the cleaning effect of the purifier.

[0006]

According to a first aspect of the present invention, there is provided a water purifying apparatus, a water purifying apparatus, a water source for purifying water by the purifying apparatus, and the purifying apparatus. Air supply means capable of supplying air to the water circulation path on the water inlet side and the water source, air distribution means capable of simultaneously distributing air to both the water circulation path on the water inlet side of the purifying device and the water source, and the purifying device It is characterized by comprising a water nozzle capable of ejecting the water purified in (1) to the water source, and an air nozzle capable of ejecting the air supplied from the air supply means to the water source.

In the water purifying apparatus according to the second aspect of the present invention, it is preferable that the air nozzle is located at the center of the jet outlet of the water nozzle and protrudes toward the jet side of water from the water nozzle. Further, in the method for controlling a water purifying apparatus according to claim 3 of the present invention, it is desirable that water be periodically replenished in the cleaning mode for cleaning the inside of the purifying apparatus.

Furthermore, in the water purifying apparatus according to claim 4 of the present invention, the purifying apparatus is provided with an ultraviolet lamp having a sterilizing effect and is provided around the ultraviolet lamp, and exhibits an oxidizing effect by irradiation of ultraviolet rays. Along with this, a photoexcited catalyst that blocks transmission of ultraviolet rays from the ultraviolet lamp, a porous ceramic that is provided around the photoexcited catalyst and that propagates microorganisms to decompose organic substances, the ultraviolet lamp, the photoexcited catalyst and the porous ceramic. And a support plate provided below the case for mounting the photoexcited catalyst and the porous ceramic, and having a communication hole communicating with the porous ceramic,
It is desirable to include a partition plate that closes the gap between the ultraviolet lamp and the photoexcited catalyst, partitions at least the porous ceramic in the axial direction, and has a communication hole that communicates with the porous ceramic.

Further, in the water purifying apparatus according to claim 5 of the present invention, the purifying apparatus includes a plurality of baskets that can be put in and taken out from the purifying apparatus, and a water purifying unit filled in the baskets. desirable.

[0010]

According to the constitution of claim 1 of the present invention, when the dirt component which cannot be completely decomposed due to water quality or the like is gradually deposited on the surface of the filter medium, the biological purification function of the filter medium is deteriorated. Air is mixed into the circulating water by the air supply means. Then, during purification, oxidation purification in the purification device is promoted. At the time of cleaning, organic substances and microorganisms adhering to the purification device are cleaned by a mixed flow of water and air. Furthermore, since aeration is provided around the filter medium, the deposit can be effectively separated and floated by the large increase in the flow rate (flow velocity) due to air mixing and the surface tension of the bubbles, and the deposit on the filter medium can be effectively dropped. Further, since the air supplied from the air supply means can be simultaneously distributed to the purifying device and the water source by the air distributing means, pressure loss in the air supply path is reduced, so that a sufficient amount of air is supplied to the purifying device and the water source. be able to.

According to the second aspect of the present invention, in order to prevent the water from flowing back to the air nozzle due to the pressure of the water jetted from the water nozzle, the mixed flow of water and air is jetted well to the water source. be able to. According to the control method of the third aspect of the present invention, in the cleaning mode for cleaning the inside of the purifying device, the purifying device is regularly replenished with water, so that the water level is prevented from being lowered and the inside of the purifying device is favorably improved. Because it can be washed
The purification capacity of the purification device can be maintained well.

According to a fourth aspect of the present invention, there is provided an ultraviolet lamp and a photoexcited catalyst excited by ultraviolet rays.
The purification device is provided with a porous ceramic in which microorganisms are propagated, and at least the porous ceramic is partitioned by a partition plate having a communication hole communicating with the porous ceramic. Flowing in. For this reason, the purification effect of the porous ceramic is improved, and the local blockage of the porous ceramic is reduced, so that the purification effect can be maintained for a long period of time.
Further, since the exfoliation of foreign matter adhering to the porous ceramic is promoted by the vibration of the porous ceramic, a high purification effect can be maintained.

According to the structure of claim 5 of the present invention, at the time of assembly, the purification units are inserted one by one inside the case of the purification device. In addition, since each cleaning unit is removed upon removal, each cleaning unit can be easily washed by hand during cleaning, and the assembling and disassembling operations are easy.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 4 show a first embodiment in which the water purification apparatus of the present invention is applied to a water purification apparatus for a bathtub.

As shown in FIG. 1, a purification and sterilization system 1
Is a purification / sterilization cylinder 11, a water circulation pump 101, an air supply device 102, a water motorized valve 201 for switching a water flow path,
Air solenoid valve 202 for opening and closing the air flow path to the purification and sterilization cylinder 11, blower 110 for supplying air, blower 110
It is composed of a branch joint 203 for distributing the air supplied from the purifying / sterilizing cylinder 11 and the bath 50.

The purifying / sterilizing cylinder 11 has a double bottom so that water can be introduced from a water inflow pipe 26 into a region 25 between the fumarolic plate 24 and the inner bottom plate 16. Insole 1
6 is made of mesh-like punching metal and has a water inflow pipe 26
The water that has flowed into the region 25 from is uniformly applied to the porous ceramic balls 21 and the supported filter medium 22. The purification and sterilization cylinder 11 is
The side surface is covered with a cylindrical container 13 made of resin or metal. At the upper part of the cylindrical container 13, the outflow pipe 2 for discharging water
7, the lid 12 on the upper portion of the purification / sterilization cylinder 11 is provided with an air vent valve 17 for adjusting the air pressure in the purification / sterilization cylinder 11.

The purification / sterilization cylinder 11 is composed of a porous ceramic ball 21 for adhering and propagating microorganisms to the porous ceramic from the outside inside the cylindrical container 13 to adsorb and decompose the scale of water, and a porous ceramic having a pore diameter of 1 μm or less. Molded into corrugated plate or honeycomb shape, TiO ₂ , ZnO, W
It comprises a filter medium 22 that carries a photoexcited catalyst such as O ₃ to adsorb and decompose it, and a UV lamp 23 having a double tube structure with a shield 15 made of UV transparent glass such as quartz for blocking water.

At the bottom of the bath 50, there are provided a jet plate 51 for jetting air bubbles into the water, a return port 52 for jetting air into the water by mixing the air with the water, and a suction port 53 for taking in the water. There is. Since the space portion 31 formed by the supported filter medium 22 and the ultraviolet lamp 23 has a lower pressure loss than the porous ceramic balls 21 and the supported filter medium 22, the water inflow pipe 26
Further, the water flowing into the cylindrical container 13 through the mesh of the inner bottom plate 16 mainly flows into the space portion 31, is sterilized by the irradiation of the ultraviolet rays from the ultraviolet lamp 23, and flows to the supported filter medium 22 and the porous ceramic balls 21. At this time, the supported filter medium 2
In 2, the organic substances, the odorous molecules and the adsorbed substances are decomposed by the photoexcited catalyst excited by the irradiation of ultraviolet rays, and at the same time, the ultraviolet rays are blocked or the amount of transmitted ultraviolet rays is reduced to sterilize the microorganisms in the porous ceramic balls 21. To prevent. In the porous ceramic balls 21, organic matter is decomposed by the growing microorganisms and adsorbed by the porous filter medium. The water thus purified and sterilized is discharged from the purification and sterilization cylinder 11 through the outflow pipe 27.

The air supplied from the blower 110 is distributed to the purification / sterilization cylinder 11 and the bath 50 by the branch joint 203. The air supplied to the bath 50 is further distributed to the fumarolic plate 51 and the return port 52 by the branch joint 204. Each device of the purification and sterilization system 1 is switched according to four operation modes, that is, a filtration mode, a cleaning mode, a bubble mode, and a jet mode.

In the normal filtration mode, the water in the bath 50 taken in from the suction port 53 is purified by the purification / sterilization tube 11 and is returned to the bath 50 from the return port 52. At this time, for example, "cleaning" is displayed by a timer, and the cleaning switch is periodically turned on to operate in the cleaning mode. this is,
This is for periodically removing the filter material deposits that are gradually deposited in the filtration mode. In this cleaning mode, aeration is performed around the filter medium, so the flow rate (flow velocity) due to air mixing
And the surface tension of bubbles effectively separate and float the deposits. Furthermore, the suspended matter is discharged by the water flow into the outflow pipe 27.
It is discharged to the outside of the purification / sterilization cylinder 11. By repeating this alternately several times, the deposit can be effectively removed.

In the bubble mode and the jet mode, the air supplied from the blower 110 is jetted from the jet plate 51 and the return port 52. As a result, the inside of the bath 50 becomes a bubble bath and a comfortable bath can be performed. In the case of the jet mode, water mixed with air is ejected from the return port 52, so that the massage effect is increased. Next, the control flow of the operation of the water circulation pump 101, the water motorized valve 201, the air solenoid valve 202, and the blower 110 is shown in FIGS. 2 to 4, and a detailed description thereof will be given.

In the cleaning mode, as shown in FIG. 2, when the cleaning switch is turned on in step 301, step 3
As indicated by 02 and 303, the water circulation pump 101 operates in this control flow example for 2 minutes to completely fill the purification / sterilization cylinder 11 with water. Next, in step 304, the water circulation pump 101 is turned off, and in steps 305, 306, 307.
As shown in FIG. 2, by opening AC of the water motorized valve 201, turning on the blower 110, and opening the air solenoid valve 202, air is supplied to the fumarolic plate 24 in the purification / sterilization cylinder 11 through the branch joint 203. Then, the deposits on the surface of the porous porous ceramic balls 21 are washed. In this control example, step 30
As shown in 8, the air supply time is 5 minutes. After that, as shown in steps 309, 310, and 311, the air solenoid valve 202 is closed, the blower 110 is turned off, and the water circulation pump 101 is turned on. This on-time is set to 80 seconds, and the deposits on the surface of the filter medium are discharged to the outside of the purification / sterilization cylinder 11, and since the AC of the water motorized valve 201 is open, the deposits on the surface of the filter medium are outside the purification / sterilization system 1. Is discharged to. After that, as shown in steps 313 and 314, the water circulation pump 101 is turned off, and the AB of the water motor-operated valve 201 is opened.
Exit wash mode.

In the bubble mode, as shown in FIG. 3, when the bubble switch is manually turned on at step 321, the operation proceeds to step 322, the electromagnetic air valve 202 is closed, and the operation proceeds to step 323 to turn on the blower 110 and the branch joint 2
Air is supplied to the fumarolic plate 51 and the return port 52 installed in the bathtub 50 via 04. For example, in this control flow, when air is supplied for 5 minutes as shown in step 324, the blower 110 is turned off. After turning off the blower 110,
Bath water flows backward from the fumarolic plate 51 and enters, but in this case, there is no problem because it does not rise above the water surface.

In the jet mode, as shown in FIG. 4, when the jet switch is manually turned on at step 331, the routine proceeds to step 332, the air solenoid valve 202 is closed,
Proceeding to step 333, the water circulation pump 101 and the blower 110 are turned on, and air is supplied to the return port 52 of the fumarolic plate 51 via the branch joint 204. At the return port 52, the water purified by the purification / sterilization tube 11 and the air distributed by the branch joint 204 are mixed and ejected to the bath 50. For example, in this control flow, when air is supplied for 5 minutes as shown in step 334, the water circulation pump 101 and the blower 11
0 turns off. After the blower 110 is turned off, the bath water flows backward from the fumes plate 51 and enters, but in this case, there is no problem because it does not rise above the water level.

Next, the operation and effect of the present invention will be described by comparing the first embodiment of the present invention with the comparative example 1. Comparative Example 1
Is, as shown in FIG. 5, the air solenoid valve 202 of the first embodiment.
Further, the branch joint 03 is replaced with an air-operated valve 211 using a three-way valve, and the branch joint 204 is replaced with an air-operated valve 212 using a three-way valve. 6 to 8 show control flows of the cleaning mode, the bubble mode, and the jet mode of Comparative Example 1.

In the cleaning mode, as shown in FIG. 6, the cleaning switch is turned on to fill the purification / sterilization cylinder 11 with water,
As shown in steps 305, 306, and 401, by opening AC of the water motorized valve 201, turning on the blower 110, and opening 1-3 of the air motorized valve 211, the purification / sterilization cylinder 11
Air is supplied to the inner gas jet plate 24 through the air motorized valve 211 to clean the adhered substances on the surface of the porous ceramic balls 21. At this time, no air is supplied to the bathtub 50. In this control example, as shown in step 308, the air supply time is set to 5 minutes. Then steps 402, 4
03, 311, the blower 110 is turned off, the air motorized valve 211 is opened 1-2, and the water circulation pump 101
Turn on. This on-time is set to 80 seconds, and the deposits on the surface of the filter medium are discharged to the outside of the purification and sterilization cylinder 11, and the water-operated valve 2
Since 01 AC is open, the filter medium surface deposit is discharged to the outside of the purification and sterilization system 2. Then step 3
As shown in Nos. 13 and 314, the water circulation pump 101 is turned off, the water motor-operated valve 201 is opened AB, and the cleaning mode is ended.

In the bubble mode, as shown in FIG. 7, when the bubble switch is turned on, in step 411, 1-2 of the air motorized valve 211 and ac of the air motorized valve 212.
Open up. By proceeding to step 323 and turning on the blower 110, the air-operated valve 211 and the air-operated valve 2
Air is supplied to the fumarolic plate 51 installed in the bathtub 50 via 12. At this time, no air is supplied to the return port 52. For example, in this control flow, when air is supplied for 5 minutes as shown in step 324, the blower 110 is turned off. After the blower 110 is turned off, the bath water flows back from the fumes plate 51 and enters, but in this case, there is no problem because it does not rise above the water level.

In the jet mode, as shown in FIG. 8, when the jet switch is turned on, in step 421, 1-2 of the pneumatic valve 211 and a of the pneumatic valve 212 are operated.
-Open b. Proceed to step 333, water circulation pump 1
01 and the blower 110 are turned on, and the AB of the water motorized valve 201 is opened in step 422 to supply air to the return port 52 installed in the bathtub 50 via the air motorized valve 211 and the air motorized valve 212. Supply. At this time, air is not supplied to the fumarolic plate 51. At the return port 52, the water purified by the purification / sterilization tube 11 and the air are mixed, and the bath 5
Gush to 0. For example, in this control flow, step 3
When air is supplied for 5 minutes as indicated by 34, the water circulation pump 101 and the blower 110 are turned off. Blower 110
After turning off, the bathtub water flows backward from the fumes plate 51 and enters, but in this case, there is no problem because it does not rise above the water surface.

In Comparative Example 1, the air from the blower 110 is supplied to either one of the purification and sterilization cylinder 11 and the bath 50 by switching the air motorized valve 211, and the air motorized valve 212 is switched to install in the bath 50. Air from the blower 110 is supplied to either one of the blower plate 51 and the return port 52. In Comparative Example 1, since the air-operated valve 211 and the air-operated valve 212 are composed of three-way valves, as shown in FIG. 9, the pressure loss due to the three-way valve increases in the cleaning mode, bubble mode, and jet mode, and Blower 110 due to increased pressure loss
Winding temperature rises. For this reason, the amount of air is reduced, a sufficient amount of air cannot be supplied to the purification and sterilization cylinder 11 and the bath 50, and cooling of the blower 110 itself becomes incomplete. In order to supply a sufficient amount of air, it is necessary to take measures such as improving the coil insulation of the blower 110 or expanding the coil wire diameter.
There is a problem that the blower 110 becomes large and the cost increases.

On the other hand, in the first embodiment, the air supplied from the blower 110 is supplied to the purifying / sterilizing cylinder 1 by the branch joint 203.
No. 1 and the bath 50, and the air path from the blower 110 is linearly connected to the side of the bath 50 that requires a sufficient amount of air, so the pressure loss is low and a sufficient amount of air can be supplied to the bath 50. . The air supply to the purification / sterilization cylinder 11 is controlled by opening / closing the air solenoid valve 202. Furthermore, bathtub 50
The air supplied to the blower 110 is distributed to the jet plate 51 and the return port 52 by the branch joint 204, and the air path from the blower 110 is linearly connected to the side of the return port 52 which requires a sufficient amount of air in the jet mode operation. Therefore, the pressure loss is low, and a sufficient amount of air can be supplied to the return port 52 side.

According to the first embodiment, the purification / sterilization cylinder 11
Since air can be mixed around the filter medium inside, effective cleaning can be performed. For this reason, regular hand-washing maintenance is unnecessary. Furthermore, by switching between bubble mode and jet mode, a comfortable bath with a massage effect is possible. Further, according to the first embodiment,
In order to completely remove the contaminants in the bath water, in order to excite this photoexcited catalyst, a porous porous ceramic ball 21 having an organic substance decomposing action, a supported filter medium 22 carrying a photoexcited catalyst having a sterilizing and deodorizing action. Since it has a structure in which the ultraviolet lamp 23 having the sterilizing action is integrally formed, there is an effect that all contaminants such as organic substances and inorganic substances can be completely removed by a compact device.
It is characterized by the fact that it integrates a structure that has both biodegradation and chemical decomposition functions. Therefore, the water pumped up from the suction port 53 and returned to the inside of the bath 50 from the return port 52 is recirculated in a state where all the contaminants have been removed as described above.

Further, according to the first embodiment, the initial function of decomposing organic matter is lowered because microorganisms are not attached to the porous ceramic balls 21 at the initial stage, but Since the supported filter medium 22 having a photoexcited catalyst has a function of decomposing organic matter by the ultraviolet rays emitted from the ultraviolet lamp 23 from the beginning, the organic matter decomposing performance at the time of initial startup by the photoexciting catalyst 23 is good and stable purification performance is maintained. There is.

Furthermore, in the first embodiment, since the ultraviolet rays radiated from the ultraviolet lamp 23 are blocked by the carrying filter medium 22 to protect the microbes of the porous ceramic balls 21, a shielding body for blocking the ultraviolet rays is provided. Compared to things
There is an effect that the pressure loss is reduced from a small flow rate of the water flowing through the purification and sterilization cylinder 11 to a large flow rate, and the water circulation pump 101 can be made small and lightweight. In the present invention, it is possible to protect the microorganisms from the ultraviolet rays emitted from the ultraviolet lamp by providing a shield for blocking the ultraviolet rays between the photoexcited catalyst and the porous ceramic balls.

(Second Embodiment) A second embodiment of the present invention is shown in FIG.
0 to 12 are shown. As shown in FIG. 11, the purification / sterilization system 1 is attached to the top surface of a base 55 formed on the side of the bath 50. A specific configuration of the return port 400 for mixing water and air is shown in FIG.

The water purified by the purification / sterilization system 1 is supplied from the water jet pipe 401 to the water nozzle 402. The water nozzle 402 is formed such that the inner diameter of the hole through which water can flow is reduced so as to decrease in the water ejection direction, and the pressure of the ejected water is increased. A rectifying member 403 is fixed to a connecting portion between the water jet pipe 401 and the water nozzle 402. The rectifying member 403 has a through hole through which the air nozzle 404 can penetrate in the center, and a plurality of rectifying plates 403a are radially formed around the through hole in parallel with the flow of water.

The air nozzle 404 is provided at the center of the water nozzle 402, and the tip of the air nozzle 404 has a water nozzle 4
It projects by α from the tip of 02. Blower 110
The air supplied from the air is supplied from the air supply pipe 405 to the air nozzle 404. The water supplied from the water circulation pump 101 to the water supply pipe 401 becomes a turbulent flow at the curved portion 401 a, but is rectified by the rectifying plate 403 a of the rectifying member 403 and jetted into the bath 50. At this time, the air nozzle 40
The outlet end of 4 has a slight negative pressure. When the air supplied from the blower 110 is ejected from the air nozzle 404, the air is wrapped in the water ejected from the water nozzle 402, and ejected into the bath 50 while mixing the water and the air.

As shown in the graph 501 of FIG. 12, the second
In the embodiment, since the air to be mixed with water is supplied by the blower 110, a certain amount of air can be mixed regardless of the flow rate of water ejected from the water nozzle 402. It is also possible to adjust the amount of mixed air by adjusting the blower 110.
On the other hand, in the ejector-type return port that mixes air with water by the pressure of water ejected from the water nozzle 402, the graph 50
As shown in FIG. 2, the larger the pressure of the water ejected from the water nozzle, the larger the amount of air mixed, so that a large water circulation pump is required to mix a large amount of air with the water.

In the second embodiment, since the air nozzle 404 slightly protrudes from the water nozzle 402, the water nozzle 4
Due to the pressure of the water jetted from 02
4 is prevented from flowing backward and the mixed flow of water and air is satisfactorily ejected into the bath 50, so that the massage effect on the bather is increased. (Third Embodiment) The third embodiment of the present invention is an example of a control method for preventing the water level from being lowered when cleaning the inside of the purification / sterilization cylinder with bubbles. FIG. 13 shows the bubble cleaning control flow.

First, in step 503, the water circulation pump 101.
Is turned on, the washing LED is turned on, and the time is displayed on predetermined 7 segments. Next, at step 504, it is judged if the ON time of the water circulation pump 101 is 2 minutes or more. This is a device for confirming that the inside of the purification and sterilization cylinder 11 is full of water. Then water circulation pump 1
When it is determined that 01 is on for 2 minutes or more, the routine proceeds to step 505, the water circulation pump 101 is turned off, and the water motor-operated valve 201, which is a three-way valve, is switched to open the drain side AC. Next, in step 506, the motor that drives the blower 110 and the pneumatic solenoid valve 202 are opened. At this time, air bubbles are being washed. Therefore, air bubbles rise from the fumarolic plate 24 in the purifying and sterilizing cylinder 11, and the water inside the purifying and sterilizing cylinder 11 is pushed out from the outflow pipe 27 by the bubbles during the bubble cleaning and the water level inside the purifying and sterilizing cylinder 11 is increased. Is going down. During this time, for example, 58 seconds are counted by the timer, and after 58 seconds have elapsed as shown in step 507, the process proceeds to step 508, and the water circulation pump 101 is turned on again,
The air solenoid valve 202 is closed, and the water circulation pump 101 is in the meantime.
The ON duration of is set to, for example, 2 seconds. As a result, the inside of the purification / sterilization cylinder 11 is returned to a full state. Next, the routine proceeds to step 509, where the timer counts that 2 seconds have elapsed, and after 2 seconds has elapsed, the water circulation pump 101 is moved to step 511
Turn it off again as indicated by. The operation from step 506 to step 511 is repeated 5 times, and after repeating 5 times, the process proceeds to step 512, the air solenoid valve 202 is closed, the drive motor of the blower 110 is turned off, the water circulation pump 101 is turned on, and the timer is turned on for 80 seconds. To count. This is because the wastewater in the purification / sterilization cylinder is discharged from the outflow pipe 27 by supplying the water flow into the purification / sterilization cylinder 11. Next, in step 513, the timer is set to 8 as described above.
After measuring 0 seconds, the process proceeds to step 514, the water circulation pump 101 is turned off again, and the water motor-operated valve 201 which is a three-way valve A
-Open B. That is, the water-operated valve 201 is set on the purification side, and the cleaning operation is completed. At this time, the cleaning LED is turned off, and the cleaning control flow shown in FIG. 13 ends.

By performing the control during the cleaning operation, it is possible to efficiently perform the bubble cleaning by suppressing the decrease in the water level which causes the deterioration of the cleaning effect of the purification / sterilization cylinder 11. The control method shown in the third embodiment is merely a control method for cleaning the purifying / sterilizing cylinder which is the water purifying device, and in the cleaning mode for cleaning the inside of the purifying / sterilizing cylinder, water is periodically put into the purifying / sterilizing cylinder. If the cleaning effect can be improved by replenishing the
It can be changed according to the usage status of the water purification device.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be shown in FIGS. The circulating bath water purification system shown in FIG. 14 is basically the same as the configuration shown in FIG.
The structure of the purification / sterilization cylinder is different between that shown in FIG. 1 and this embodiment shown in FIG. A specific configuration of the purification / sterilization cylinder 600 of this embodiment is shown in FIG. A plan view of the support plate 621 shown in FIG. 15 is shown in FIG. 16, and a plan view of the partition plate 622 shown in FIG. 15 is shown in FIG.

In the purifying / sterilizing cylinder 600, a case lid 611a made of resin or the like is fixed to the opening of a cylindrical outer case 611 made of resin or the like. And the outer case 61
A rod-shaped ultraviolet lamp 23 having a bactericidal action is arranged at the position of the central axis in 1, and one end of the ultraviolet lamp 23 is fixed to the case lid 611a. On the outer circumference of the ultraviolet lamp 23, a cylindrical photoexcitation catalyst 613 is arranged with a gap D formed in an annular shape.

The photoexcited catalyst 613 is made of, for example, a honeycomb ceramic and has a thickness that does not transmit ultraviolet rays. The surface of the photoexcited catalyst 613 has an OH radical (free hydroxyl group) having a strong oxidizing action by irradiation of ultraviolet rays. The photocatalyst such as TiO ₂ which produces) is supported. Photoexcitation catalyst 613
Between the outer peripheral wall and the inner peripheral wall of the outer case 611, there is filled a porous ceramic ball 21 having a diameter of, for example, about 10 mm, which propagates microorganisms and biologically treats and decomposes organic substances.

A water inflow pipe 26 and an air ejection pipe 28 are connected below the outer case 611. Then, the unpurified water in the bathtub 50 pumped up by the water circulation pump 101 flows into the region 612 formed below the outer case 611 from the water inflow pipe 26, and the air supplied from the blower 110 is ejected from the air ejection pipe 28. To do. Below the inside of the outer case 611, a support plate 621 made of stainless steel or the like on which the photoexcited catalyst 613 and the porous ceramic balls 21 are placed.
16 is locked to a locking portion (not shown) in the outer case 611, and as shown in FIG. 16, the support plate 621 is not blocked by the porous ceramic balls 21 and has, for example, an oval shape. The communication hole 621a is the porous ceramic ball 2
It is opened in the part where 1 is placed.

Further, a partition plate 622 made of stainless steel or the like for axially partitioning the photoexcited catalyst 613 and the porous ceramic balls 21 placed on the support plate 621 is provided in the outer case 611 with an appropriate interval. The ultraviolet lamp 2 is locked to a locking part (not shown) in the 611.
The space D between the photocatalyst 613 and the photoexcited catalyst 613 is separated by the partition plate 622.
As shown in FIG. 17, the partition plate 622 is provided with, for example, an oval communication hole 622 a which is not blocked by the porous ceramic balls 21 in the partition plate 622. A circular communication hole 622 that has been established and communicates with the ultraviolet lamp 23.
b has been opened.

An outflow pipe 27 for discharging purified water or bubbly water is provided above the outer case 611, and above the inside of the outer case 611 communicating with the outflow pipe 27, a photoexcitation catalyst 613 and a porous ceramic. The pressing plate 616 made of stainless steel or the like for pressing and fixing the ball 21 is the outer case 6
It is locked to a locking portion (not shown) in the inside of 11, and the porous ceramic ball 21 is connected to the communication hole 616 in the holding plate 616.
A communication hole 616b is formed to connect the "a" and the ultraviolet lamp 23 with a slight gap therebetween.

A gap L of, for example, about 1 mm is provided between the partition plate 622 and the porous ceramic balls 21 below the partition plate 622, and the purification / sterilization cylinder 600 is configured as described above. Next, the operation of the above embodiment in the case of cleaning the porous ceramic balls 21 will be described. In FIG. 15, at the time of cleaning, the water flowing in from the water inflow pipe 26 and the air ejected from the air ejection pipe 28 are mixed in the region 612 to become bubble water. This bubbly water flows into the porous ceramic ball 21 from the region 612 through the communication hole 621a of the support plate 621, and most of the bubbling water that has flowed in is shown by the solid line arrow in the photoexcitation catalyst 61.
A part of the bubbling water flows between the porous ceramic balls 21 as indicated by the dotted arrow, and flows through the gap 3 into the gap D having a small flow resistance.

Since the gap D is closed by the partition plate 622 with an appropriate gap, the bubble water flowing into the gap D passes through the photoexcited catalyst 613 as shown by the solid arrow to form the porous ceramic. The light-excited catalyst 613 flows into the balls 21 and again through the communication holes 622a of the partition plate 622.
And flows into the gap D. Most of such bubbly water flows between the porous ceramic balls 21 while repeating the detoured flow as shown by the solid line arrow, and the holding plate 61.
6 through the communication hole 616a and the communication hole 616b
Outflow from 7.

Therefore, between the porous ceramic balls 21, the bubbly water having a high flow velocity and the bubbly water having a slow flow velocity indicated by the solid line arrow flow together, so that they are partitioned by the partition plate 622. In the areas A, B and C of the porous ceramic balls 21, bubbly water having a uniform flow rate is flowed and uniformly washed. Further, the partition plate 622 and the partition plate 62
By providing the gap L between the porous ceramic balls 21 below 2, the balls vibrate due to the buoyancy generated by the collision of the bubbles in the water bubbles flowing between the porous ceramic balls 21, so that the unpurified water is purified. At this time, the exfoliation of foreign matter attached to the porous ceramic balls 21 is promoted.

(Fifth Embodiment) FIG. 1 shows a fifth embodiment of the present invention.
8 and FIG. The fifth embodiment of the present invention shown in FIGS. 18 and 19 shows a modification of the purification / sterilization cylinder.
The fifth embodiment is an example of a purification and sterilization cylinder having a configuration which is different from the purification and sterilization cylinder 600 of the fourth embodiment shown in FIG. In this purification and sterilization cylinder 700, three baskets 701, 702 and 703 are inserted into an outer case 704, and a cylindrical photoexcitation catalyst 713 and a porous ceramic ball 21 are used as a unit for water purification in each basket. It is a filled example. The porous ceramic balls 21 are filled between the outer peripheral wall of the photoexcited catalyst 713 and the inner peripheral wall of the basket. The baskets 701, 702, 703 are divided in the axial direction of the purification / sterilization cylinder 700. That is, the individual baskets 701, 702, 703 are assembled by sequentially inserting them into the outer case 704. The ultraviolet lamp 723 has one end fixed by an upper lid 705 and is located at the axial center of each basket 701, 702 and 703. UV lamp 723 and baskets 701 and 702
And an inner peripheral wall of 703, an annular gap E is provided, and water or bubble water in which water and air are mixed can flow through the gap E. Upper wall 7 of third basket 703
A seal portion for the ultraviolet lamp 723 is formed on the inner peripheral portion of 03a. A water inflow pipe 711 and an air ejection pipe 7 are provided in an area 710 provided below the purification / sterilization cylinder 700.
Water 12 or bubbly water in which water and air are mixed flows from this region 710 toward the upper side of the purification / sterilization cylinder 700, and is discharged from the purification / sterilization cylinder 700 via the outflow pipe 714.

According to the fifth embodiment, the outer case 704 is
Assembling of each unit to the is improved. That is, it is preferable that the unit is as small as possible when performing hand washing. Therefore, from the outer case 704 to each basket 70
3, 702, and 701 are sequentially removed, and cleaning is performed for each individual unit. Since each basket is small, the cleaning operation is easy. Then, at the time of assembling, the baskets 701, 702, and 703 are assembled in this order to complete the assembly of the purification and sterilization cylinder 700.

In the fifth embodiment, the baskets divided for each unit are individually inserted into the outer case 704 at the time of assembly, so that there is an effect that the operability is improved. In addition, the flow of water bypasses the inside and the outside of the photoexcited catalyst 713 in order as shown by the solid line, so that the effect of uniform cleaning by the flow of a bubbly flow having a uniform flow velocity is also used. The fifth
In the exemplary embodiment, each basket 701, 702 and 703.
Was divided in the axial direction of the purification and sterilization cylinder 700, but in the present invention, it is possible to divide it in the circumferential direction of the purification and sterilization cylinder, and it is also possible to divide it into both holes in the axial direction and the circumferential direction. is there.

(Sixth Embodiment) A sixth embodiment of the present invention is shown in FIG.
It shows in 0-22. In the sixth embodiment of the present invention, the upper wall 70 of the third basket 703 of the purification / sterilization cylinder 700 shown in FIG.
It is an example of the purification and sterilization cylinder 800 from which the sealing part of 3a is removed. This is similar to the gap E provided between the ultraviolet lamp 723 and the partition plate of each basket shown in FIG. 22, and the upper wall 803 of the basket 803 for improving assembly.
A gap is formed between the inner peripheral wall of a and the ultraviolet lamp 723. That is, the fluid flows as shown by the dotted line 801.

According to the sixth embodiment, as in the fifth embodiment shown in FIG. 19, a unit of the purification and sterilization cylinder 800 is formed for each individual basket, so that each basket is taken out from the outer case 704. This allows each unit to be washed by hand. Therefore, there is an effect that maintenance at the time of hand washing becomes easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment in which a first embodiment of the present invention is applied to a water purification device for a bath.

FIG. 2 is a flowchart showing a control flow in a cleaning mode according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing a control flow in a bubble mode according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a control flow in a jet mode according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view showing an example in which Comparative Example 1 is applied to a water purification device for a bath.

FIG. 6 is a flowchart showing a control flow in a cleaning mode of Comparative Example 1.

7 is a flowchart showing a control flow in a bubble mode of Comparative Example 1. FIG.

8 is a flowchart showing a control flow in a jet mode of Comparative Example 1. FIG.

FIG. 9 is a characteristic diagram showing pressure loss of the first example of the present invention and the comparative example 1.

FIG. 10 is a sectional view showing a water purifier according to a second embodiment of the present invention.

FIG. 11 is a sectional view showing an embodiment in which the second embodiment of the present invention is applied to a water purification device for a bath.

FIG. 12 is a characteristic diagram showing the relationship between the amount of mixed air and the flow rate of water according to the second embodiment of the present invention.

FIG. 13 is a flowchart showing a control flow at the time of cleaning operation according to the third embodiment of the present invention.

FIG. 14 is a system configuration diagram showing an embodiment in which the fourth embodiment of the present invention is applied to a water purification device for a bathtub.

FIG. 15 is a sectional view of a water purifier according to a fourth embodiment of the present invention.

16 is a plan view of the support plate shown in FIG.

17 is a plan view of the partition plate shown in FIG. 15. FIG.

FIG. 18 is a plan view of a water purifier according to a fifth embodiment of the present invention.

FIG. 19 is a vertical sectional view according to a fifth embodiment of the present invention.

FIG. 20 is a plan view of a water purifier according to a sixth embodiment of the present invention.

FIG. 21 is a vertical sectional view of a water purifier according to a sixth embodiment of the present invention.

22 is a cross-sectional view of FIG. 21 according to a sixth embodiment of the present invention.
It is a sectional view taken along line I.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Purification and sterilization system 11 Purification and sterilization cylinder (purification device) 21 Porous ceramic balls (porous ceramic) 22 Supported filter media (photoexcited catalyst) 23 UV lamp 50 Bath (water source) 51 Fume plate 102 Air supply device (air supply means) 110 Blower (air supply means) 201 Water electric valve 202 Air solenoid valve 203 Branch joint (air distribution means) 402 Water nozzle 404 Air nozzle 611 Outer case (case) 613 Photoexcitation catalyst 621 Support plate 621a Communication hole 622 Partition plate 622a Communication hole 701 Basket 702 Basket 703 Basket 704 Outer case (case) 713 Photoexcited catalyst 723 UV lamp

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location // A47K 3/00 Z 7150-2D (72) Inventor Manabu Maeda 1-chome, Showa-cho, Kariya city, Aichi prefecture No. 1 in Nippondenso Co., Ltd

Claims (5)

[Claims] 1. A water purifying device, a water source of water purified by the purifying device, an air supply means capable of supplying air to the water circulation path on the water inlet side of the purifying device and the water source, and the purifying device. Is supplied from the air supply means, a water nozzle capable of simultaneously distributing air to both the water circulation path on the side of the water inlet and the water source, a water nozzle capable of ejecting the water purified by the purifying device to the water source, and the air supply means. A water purifying device, comprising: an air nozzle capable of ejecting fresh air to the water source. 2. The water purifier according to claim 1, wherein the air nozzle is located at the center of the jet outlet of the water nozzle and protrudes toward the jet side of water from the water nozzle. 3. The method of controlling a water purifier according to claim 1, wherein water is replenished periodically in a cleaning mode for cleaning the inside of the purifier. 4. The purification device is provided with an ultraviolet lamp having a bactericidal action, and is provided around the ultraviolet lamp, and exhibits an oxidizing action by irradiation of ultraviolet rays and photoexcitation that blocks transmission of ultraviolet rays from the ultraviolet lamp. A catalyst, a porous ceramic that is provided around the photoexcited catalyst and that propagates microorganisms to decompose organic substances, a case that accommodates the ultraviolet lamp, the photoexcited catalyst, and the porous ceramic, and a case that is provided below the case. A mounting plate on which the photoexcited catalyst and the porous ceramic are placed, and a support plate having a communication hole communicating with the porous ceramic; and a gap between the ultraviolet lamp and the photoexcited catalyst, and at least the porous ceramic in the axial direction. And a partition plate having a communication hole that divides and communicates with the porous ceramic. Claim 1, wherein the door
The described water purification device. 5. The water purification apparatus according to claim 1, wherein the purification apparatus includes a plurality of baskets that can be put in and taken out of the purification apparatus, and a water purification unit filled in the baskets.