JPH11239788A - Bath water cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely and immediately achieve cleaning function after the arrange ment of a machinery and to keep purifying capacity even during operation by filtering a contaminant or bacterial contained in a colloidal particulate state by using a precise filter. SOLUTION: A bathtub water purifying apparatus has the circulating pump 3 circulating the water in a bathtub 2 and precise filter 4 filtering the water in the bathtub 2 provided in a circulating flow channel 1 and is equipped with the washing nozzle 6 having a flowing water emitting port 5 arranged on the primary side of the precise filter so as to be freely revolved by a revolving means. In this case, the washing nozzle 6 having the flowing water emitting port 5 as the bath water purifying circulating flow channel 1 is constituted as a flow channel allowing bath water to flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying apparatus for purifying bath water in a bath tub by filtering or the like so as to keep the bath water constantly clean.

[0002]

2. Description of the Related Art In recent years, bath water in a bathtub has been sucked up by a circulation pump, filtered by a filtration device, heated by a heater to constantly maintain an appropriate temperature, and further kept in a clean state in a filtration bath.
Bath water purifiers that enable bathing at any time of the day have been developed and are widely used.

[0003] As this bath water purifying device, a device as shown in FIG. 15 is widely used.
The suction port 14 at one end and the discharge port 15 at the other end are immersed in bath water in the bathtub 2, and the bath water is forced into the circulation channel 1 in order from the suction port 14 side to the discharge port 15 side. A circulation pump 3 for circulation, a filtration tank 70 filled with various filter media such as fiber balls, activated carbon, and filtration membranes, a heater 19 for keeping the bath water at an appropriate temperature, and the like are arranged in series. The suction port 14 is provided with a pre-filter 17 using a sponge or the like as a filter medium for removing large dirt in the bath water. The pre-cleaning-treated bath water is discharged from the discharge port 15 at a high flow rate. Nozzle 71 is provided.

Then, the bath water in the bathtub 2 is sucked into the circulation flow path 1 by the circulation pump 3, and is cleaned in the filtration tank 70.
The bath water after the cleaning treatment is discharged from the discharge port 15 to the bathtub 2 again.
It is configured to squirt in and return.

[0005]

In the above-mentioned conventional bath water purifying apparatus, when the bath water is sterilized, the biological cleaning function is impaired. If the biopurification function is inhibited, general bacteria increase, and this kind of bacteria cannot be filtered.Therefore, there is a problem that such stains cause the bath water to become cloudy, especially if the sterilization performance is improved. The more the biological purification function is inhibited, the more likely it is to cause cloudiness.

[0006] The dirt of the bath water in the bathtub 2 is sand, mud,
Not only general substances such as hair and dirt, but also soaps, cosmetics and pastes dissolved in bath water,
It is made of various substances such as secretions from the body, insolubles in tap water, general bacteria, etc., and their sizes vary. Among them, the particle size is 1-10
Large dirt of more than micron can be filtered by the filtration capacity of the sponge which is the filter material of the pre-filter 17 and the fiber ball in the filtration tank 70, and extremely fine dirt of 0.001 micron or less or dissolved dirt is filtered in the filtration tank. Is removed by the purifying ability of bacteria.

[0007] This is because, if a fine filtration filter is used as a filtration device so as to remove dirt and bacteria in the form of colloidal particles, the filtration membrane is immediately clogged, and each time the device is stopped, an expensive fine filtration filter is stopped. Must be replaced, which is troublesome and time consuming, maintenance is difficult, and the amount of circulating bath water is reduced due to the large resistance to the flow rate of bath water. This is because various problems such as lowering occur, so that only a coarse filter material can be used.

When ordinary filter media having a coarse mesh is used for the filtration device, dirt on the colloidal particles can be completely removed immediately after the device is installed or when the filter media is not clogged by washing or replacing the filter media. Filtration is not possible, filter media becomes dirty and clogs to some extent, and the function of purifying bio-purifying bacteria can reduce the amount of soluble organic matter in the bath water in a short time, reduce the growth of bacteria, and filter. Until I had to put up with the bath water or change the bath water.

Further, conventionally, it takes a long time to wash the filter medium of the filtration device, during which time the circulation purification operation of the bath water is stopped, turbidity is generated, and the discharge of the bath water into the bath tub is also difficult. There is a problem in that the bath stops, and the temperature of the bathtub tends to be uneven, and the unsuitable time for bathing increases.

Further, after the filter medium is washed, the water is drained into the bathroom by a water pipe (drain hose). At this time, the water is scattered into the bathroom from the drain pipe to contaminate the bathroom. The sound is loud and annoying, and the dirt that has separated from the filter medium that has settled and deposited at the bottom of the filtration tank after washing is drained while stirring with the force of running water. There was a problem that the filtration capacity of the filtration filter was reduced.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to surely clean colloidal particulate dirt and bacteria using a microfiltration filter immediately after installation of the equipment. The cleaning function can be maintained during the operation, the cleaning ability can be maintained, the maintenance is easy, the washing time of the filter medium can be shortened, the stable bath water purification operation can be performed, and the bathroom dirt during drainage is small, An object of the present invention is to provide a bath water purifying apparatus having low noise and good purifying ability.

[0012]

In order to solve the above-mentioned problems, a bath water purifying apparatus according to the present invention comprises a circulating pump 3 for circulating water in a bath tub 2 through a circulating flow path 1, and a filter for filtering water in the bath tub 2. A microfiltration filter 4 that performs
In the bath water purifying apparatus provided with the washing nozzle 6 having the running water discharge port 5 rotatably installed on the primary side by the rotating means, the cleaning nozzle 6 having the running water discharge port 5 as a bath water purification circulation flow path. The flow path is configured so that the bath water flows. With such a configuration,
A running water discharge port 5 provided in a rotatable and rotatable cleaning nozzle 6
The flow rate of the microfiltration filter 4 can be recovered by washing the microfiltration filter 4 with flowing water from the filter.

Further, it is preferable that the cleaning nozzle 6 be rotated at the time of bath water circulation purification and that the circulating bath water be ejected from the flowing water discharge port 5 of the cleaning nozzle 6 to collide with the microfiltration filter 4. With such a configuration, it is possible to prevent dirt from adhering to and fixing on the surface of the microfiltration filter 4 by applying running water to the microfiltration filter 4 even during bath water circulation purification. Then, even during the circulation cleaning of the bath water, the surface of the microfiltration filter 4 is cleaned with the continuous or temporary rotation of the rotatable cleaning nozzle, so that the cleaning operation of the bath water purification device is not stopped. In addition, the dirt on the surface of the microfiltration filter 4 can be removed at the same time as the bath water circulation purification. At this time, the fine filtration filter 4
The dirt filtered by the above temporarily adheres to the surface of the microfiltration filter 4, but is separated by the jet of running water from the washing nozzle 6 and floats in the tank on the primary side of the microfiltration filter 4. Thus, the filtration hole on the surface of the microfiltration filter 4 is not closed, and the flow rate of the microfiltration filter 4 does not decrease.

A suction port 1 at one end of the circulation channel 1
4, the bath water in the bathtub 2 is sucked and purified, and
A bath water purification circulation channel returned to the bathtub 2 from a discharge port 15 at the other end of the bathtub, and a bathwater in the bathtub 2 sucked from the suction port 14 of the circulation channel 1 to the outside through the primary side of the filtration device. And a filter membrane cleaning drainage channel that drains water to the bathwater purification circulation channel and the filtration membrane cleaning drainage channel. It is preferable that the washing nozzle 6 be rotated when the bath water flows, and that the bath water be jetted from the flowing water discharge port 5 of the washing nozzle 6. By adopting such a configuration, the cleaning nozzle 6 is rotated when the dirt separated from the microfiltration filter 4 is drained after cleaning the microfiltration filter 4 or during normal bath water circulation filtration. By increasing the relative speed (speed) between the microfiltration filter 4 and the water in the filtration tank 9 and stirring, when draining the contaminated water, the water in the microfiltration filter 4 is accumulated in a short time by drainage (residence). The dirt can be reliably drained, so that the amount of drain water can be reduced. Also, after switching to the normal bath water purification circulation channel after washing and draining, the dirt remaining in the bath water purification circulation channel is reduced, so switching to the bath water purification circulation channel is performed. Later, the filtration flow rate does not decrease rapidly, and the purification flow rate can be maintained at a large value. Further, when bath water is supplied to the filtration membrane cleaning drainage channel, the cleaning nozzle 6
Is rotated and the bath water is jetted from the flowing water discharge port 5 of the washing nozzle 6, so that the dirt on the surface of the microfiltration filter 4 can be peeled off by the flowing water jetted from the flowing water discharge port 5 even during drainage. It is.

Further, it is preferable that the primary side of the microfiltration filter 4 be used as an air layer so that the bath water jetted from the flowing water discharge port 5 of the washing nozzle 6 collides with the microfiltration filter 4 in the air. In this way, by switching the flow path or draining the water in the filtration layer 9 where the microfiltration filter 4 is arranged, the primary side of the microfiltration filter 4 is used as an air layer to form an air layer in the filtration layer 9. Form. By impinging the bath water on the microfiltration filter 4 in the air, the impact force of the water jet ejected from the flowing water discharge port 5 can be larger in the air than in the water even at the same flow rate. It can reliably remove and remove surface dirt.
In addition, what is discharged from the flowing water discharge port 5 of the cleaning nozzle 6 may be only the cleaning water, or the cleaning power may be improved by mixing air into the bath water with an air pump or the like and the impact force of the air to be released. It is.

Further, it is preferable that the rotating direction of the cleaning nozzle 6 can be switched between a counterclockwise direction and a clockwise direction.
In this way, by switching the rotation direction of the washing nozzle 6 to the left or right, the relative speed between the microfiltration filter 4 and the washing water in the filtration tank 9 can be largely switched to the left or right. Thus, the microfiltration filter 4 can be largely twisted right and left. In other words, dirt can be easily removed by the surface friction due to the twist of the microfiltration filter 4 itself, and by twisting the microfiltration filter 4, the way of contacting the flowing water discharged from the flowing water discharge port 5 of the cleaning nozzle 6 can be adjusted in various directions. It can be applied to the filtration filter 4.

Further, it is preferable that a drain port is provided at a lower portion on the primary side of the microfiltration filter 4. With such a configuration, the dirt component that has been peeled off by washing the microfiltration filter 4 and accumulated in the lower portion (the dirt component normally accumulates in the lower portion when no water flow is generated) is reliably circulated or drained. As a result, the flow maintenance time of the microfiltration filter 4 after washing can be extended. In addition, the air on the primary side of the microfiltration filter 4 provided for improving the washing power during circulation washing or drainage does not get caught in the circulation pump 3 (circulation flow decreases when air is caught). is there.

It is preferable that the primary side of the microfiltration filter 4 is filled with washing water during drainage. With such a configuration, the cleaning water is spread to various parts inside the microfiltration filter 4, and the dirt separated from the surface of the microfiltration filter 4 by the impact force of the cleaning nozzle 6 is dissolved in the cleaning water. The dirt can be reliably separated and drained.

Further, it is preferable to supply an oxidizing agent to the primary side of the microfiltration filter 4 and to rotate the washing nozzle 6. With such a configuration, dirt on the surface of the microfiltration filter 4 can be easily oxidized and peeled off with an oxidizing agent such as hypochlorous acid, and the cleaning nozzle 6 can be rotatably moved. The added oxidizing agent such as hypochlorous acid can be surely mixed, and does not remain in the filtration tank 9 on the primary side of the microfiltration filter 4. It is used for the recovery of the microfiltration filter 4 at the time of the recovery of the filter, and used for the sterilization of the bathtub 2 at the time of the circulation purification of the bath water, and simultaneously for the recovery and the recovery of the microfiltration filter 4 and the sterilization of the bathtub 2 at the same time. It can be used.

Further, it is preferable to supply an oxidizing agent to the primary side of the microfiltration filter 4 from the flowing water discharge port 5 of the washing nozzle 6. With such a configuration, the flow path such as the flowing water discharge port 5 is sterilized by the oxidizing agent.
Is not clogged with dirt (slime) or the like. Further, by rotating the cleaning nozzle 6 simultaneously with the introduction of the oxidizing agent, the stirring can be performed, and the mixing of the oxidizing agent can be surely performed.

Further, a normal operation mode in which bath water is filtered by the microfiltration filter 4, a membrane circulation cleaning mode in which the microfiltration filter 4 is washed, and a mode for discharging the drainage of the membrane washing to the outside after the membrane washing. It is preferable that the output of the circulation pump 3 in the membrane circulation cleaning mode for cleaning the microfiltration filter 4 be larger than that in the normal operation mode. With such a configuration, in the membrane circulation cleaning mode, it is possible to improve the purification ability by removing more and more of the deposits attached to the microfiltration filter 4 in a short time, and to clean the microfiltration filter 4 in a short time. Thus, the time for stopping the normal operation can be shortened, the inappropriate time for bathing can be shortened, and a stable bath water purification operation can be performed.

Further, a normal operation mode in which bath water is filtered by the microfiltration filter 4, a membrane circulation cleaning mode in which the microfiltration filter 4 is washed, and a mode in which drainage of the membrane washing is discharged to the outside after the membrane washing. It is preferable that the output of the circulating pump 3 in the drainage cleaning mode be smaller than the output of the circulating pump 3 in the normal operation mode or the membrane circulation cleaning mode. With such a configuration, the power of the drainage is weakened at the time of drainage, so that scattering to the bathroom is eliminated, noise at the time of drainage is reduced, and dirt deposited at the bottom of the filtration tank 9 is smoothly stirred without being stirred. Can be discharged to

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 is a schematic piping diagram showing the entire bath water purification apparatus of the present invention, and FIG. 5 is a cross-sectional view showing a specific configuration of the bath water purification apparatus. The bath water purification device is provided with a circulation channel 1, and a suction port 14 at one end of the circulation channel 1 and a discharge port 15 at the other end are immersed in bath water in the bathtub 2. The suction port 14 is provided with a pre-filter 17. The circulation flow path 1 is provided with a circulation pump 3 and a heater 19 for keeping the temperature of the bath water flowing in the circulation flow path 1 constant by heating the bath water from the suction port 14 side to the discharge port 15 side. In addition, this circulation flow path 1
May be provided with a bacteriostatic device. Circulation pump 3 and heater 19
A bypass flow path 20 is provided between the two. In the middle of the bypass flow path 20, a filtration tank 9 in which the precision filtration filter 4 is provided is provided. A valve means 21 such as a solenoid valve is provided in the outlet side pipe portion 23 of the bypass flow path 20 downstream of the microfiltration filter 4. Further, a portion of the circulation channel 1 that communicates with the inflow-side tube portion 22 that is the start end of the bypass channel 20, and an outflow-side tube portion 2 that is the end portion of the bypass channel 20.
A valve means 24 such as a solenoid valve is provided between the communication section 3 and the communicating section. A portion of the circulation flow path 1 on the upstream side of the circulation pump 3 and the lower end of the filtration tank 9 are connected to each other through a communication passage 25. The drain pipe 27 is connected via the. A chlorine injection device 50 is provided in the middle of the inflow-side pipe portion 22 which is the start end of the bypass flow passage 20.

The microfiltration filter 4 is provided with a filtration membrane 12 such as a hollow fiber membrane, and is opened from the upper opening of a container-shaped filtration tank 9 having a circular cross section with an upper opening and a closed lower surface. The microfiltration filter 4 is inserted and the microfiltration filter 4 is mounted on the upper opening of the filtration tank 9. The filtration membrane 12 such as a hollow fiber membrane provided in the microfiltration filter 4 has a substantially columnar shape and is long in the vertical direction, uses a heat-resistant material, and can select a pore diameter and a thread diameter as needed. One end 1
2a is fixed with resin.

As shown in FIG. 5, a bearing portion 28 connected to the inflow side pipe portion 22 is provided on a lower surface portion in the filtration tank 9, and a rotary cylinder 29 is rotatably supported on the bearing portion 28. I have. The rotating cylinder 29 is rotated by a rotating means such as a motor M. A communication pipe 30 is provided in communication with the rotary cylinder 29 near the lower surface in the filtration tank 9, and the communication pipe 30 is provided with a plurality of cleaning nozzles 6.
In the embodiment shown in FIG. 5, a central portion of the communication pipe 30 is provided so as to communicate with the rotary cylinder 29, and the cleaning nozzles 6 project upward from both ends of the communication pipe 30, respectively. The cleaning nozzle 6 is long in the vertical direction, and is disposed outside the filtration membrane 12 along the longitudinal direction of the fine filtration filter 4 elongated in the vertical direction. Therefore, the cleaning nozzle 6 is rotatable about the bearing 28. The washing nozzle 6 is placed in the up-down direction (that is, the filtration membrane 1).
2 in the longitudinal direction), and one or a plurality of flowing water discharge ports 5 are provided, and the flowing water discharge ports 5 are opened toward the fine filtration filter 4 side, and the washing water is sprayed toward the fine filtration filter 4 side. By rotating a washing nozzle 6 provided with a plurality of flowing water discharge ports 5 in the longitudinal direction of the microfiltration filter 4, the periphery of the microfiltration filter 4 can be washed over each of the upper and lower portions. As a result, the entire outer peripheral surface of the vertically long filtration membrane 12 can be cleaned.

In the bath water purifying apparatus having the above structure, the valve means 21 and the valve means 24 are usually opened and the flow path switching valve 2 is opened.
6 to prevent water from flowing into either of the communication passage 25 and the drain pipe 27, and in this state, by operating the circulation pump 3, as shown by the arrow in FIG. The bath water in 2 is sucked into the circulation flow path 1 (at this time, large-sized suspended matter is removed by the pre-filter 17),
Part of the bath water passes through the circulation channel 1 and is discharged from the discharge port 15 to the bathtub 2.
The other part of the bath water flows into the bypass flow path 20 and is discharged from the flowing water discharge port 5 of the washing nozzle 6 and passes through the microfiltration filter 4 (at this time, the bath water is filtered by the microfiltration filter 4). Of fine suspended solids, fungi, and fungi are removed by filtration), and then flows to the circulation flow path 1 and is discharged from the discharge port 15 to the bathtub 2.
The bath water in the bathtub 2 is thereby purified (this is a circulation purification mode).

By using the microfiltration filter 4 as the filtration device, the particle diameter of the colloidal impurities can be filtered to some extent, thereby preventing the clouding and purifying the device immediately after installing the device. Further, at this time, by discharging from the flowing water discharge port 5 of the washing nozzle 6 and hitting the microfiltration filter 4, the microfiltration filter 4 is hardly clogged, and the trouble of replacing the microfiltration filter 4 can be omitted. Further, even if the microfiltration filter 4 is clogged, the amount of water flowing through the bypass flow path 20 is reduced and the number of flow paths flowing through the circulation flow path 1 is increased, so that the flow rate can be reliably ensured. In addition, the flow rate for stirring the inside of the bathtub 2 can be ensured, so that the cleaning is not poor due to partial stagnation of bath water.

Further, by cleaning the microfiltration filter 4 with flowing water discharged from the flowing water discharge port 5 provided in the rotating cleaning nozzle 6, the recovery of the flow rate of the microfiltration filter 4 can be increased, and the bath water purification device can be improved. The purifying ability can be increased, and the life of the microfiltration filter 4 can be prolonged by washing and recovering the microfiltration filter 4, thereby prolonging the life of the bath water purifying device. Further, at the time of bath water purification circulation shown in FIG. 2, bath water is ejected from the washing nozzle 6 as shown in FIG. Also at the time of purification, the running water is applied to the microfiltration filter 4 to prevent (or reduce) contamination and fixation on the surface of the microfiltration filter 4 and prevent (delay) the reduction of the purification flow rate of the microfiltration filter 4. ) To maintain the purification performance for a long time.

Therefore, even when the bath water is circulated and purified, the dirt on the surface of the microfiltration filter 4 can be removed by the continuous or primary rotation of the rotatable cleaning nozzle 6, and the bath water purification apparatus can be used. Without stopping the purifying operation, the dirt on the surface of the microfiltration filter 4 can be removed at the same time as the circulation of the bath water, so that the washing and peeling can be performed at any time without limiting the user's bathing time. The operation time is such that cleaning and peeling can be performed in accordance with dirt and clogging of the microfiltration filter 4. Here, the dirt filtered by the microfiltration filter 4 temporarily adheres to the surface of the microfiltration filter 4, but is separated by the jet of running water from the washing nozzle 6, and is filtered on the primary side of the microfiltration filter 4. Since it floats in the tank 9 and does not close the filtration holes on the surface of the filtration membrane 12 such as the hollow fiber membrane constituting the microfiltration filter 4, a decrease in the flow rate of the microfiltration filter 4 is reduced. .

As shown in FIG. 2, as a flow path during the circulation purification operation of the bath water, even if water is not supplied from the flowing water discharge port 5 of the washing nozzle 6 to the primary side of the microfiltration filter 4, By rotating the washing nozzle 6, the relative speed (flow velocity) between the microfiltration filter 4 and the bath water on the primary side of the microfiltration filter 4 can be obtained. The dirt on the surface of the filtration filter 4 can be removed.

On the other hand, at the time of periodic membrane cleaning, the valve means 21 and the valve means 24 are closed, the flow path switching valve 26 formed of a three-way valve is switched to open the communication path 25, and the communication path 25 is opened.
Makes the circulation channel 1 communicate with the filtration tank 9 (in this case,
By operating the circulation pump 3 in this state, the bath water in the bathtub 2 is transferred from the suction port 14 to the circulation flow path 1 as shown by an arrow in FIG. Suction (at this time, the suspended matter with a large eye is removed by the pre-filter 17), all of the sucked bath water flows into the bypass flow path 20, and is spouted from the flowing water discharge port 5 of the washing nozzle 6 to remove the filtration membrane 12. After passing through, it flows into the communication path 25, passes through the flow path switching valve 26, and flows again into the circulation pump 3 (this is the membrane circulation cleaning mode). The cleaning nozzle 6 may also be rotated during the membrane circulation cleaning mode.

Since the entire amount of the bath water sucked by the circulation pump 3 is jetted from the plurality of flowing water discharge ports 5 of the cleaning nozzle 6 in the purification membrane circulation washing mode, the jet flow becomes steep, and the vertically long filtration is performed. The outer peripheral portion of the membrane 12 is washed in a vertical direction by a jet flow from the flowing water discharge port 5, whereby dirt and deposits adhering to the surface of the filtration membrane 12 are separated, and the filtration membrane 12 made of a hollow fiber membrane is washed. Will be promoted. Then, a flow switching valve 2 composed of a three-way valve 2
6, the communication path 25 is communicated with the drain pipe 27 (in this case, the flow is not allowed to flow from the communication path 25 to the circulation flow path 1), and as shown by the arrow in FIG. Drain it. Thus, the switching valve 26
, The bath tub 2 → the pre-filter 17 → the circulation pump 3 → the chlorine injection device 50 → the microfiltration filter 4
The drainage is performed by forming a filtration membrane cleaning drainage flow path consisting of a secondary side → a switching valve 26 → a drainage pipe 27 (this is a drainage cleaning mode). In this case, FIG.
After the step of forming a closed loop filtration membrane washing circulation channel for washing the filtration membrane by passing through the filtration device as shown in FIG. 4, the bath water in the bathtub is sucked through the suction port of the circulation channel as shown in FIG. Although an example in which the filtration membrane cleaning drainage channel drained to the outside through the primary side of the device is shown, the circulation channel as shown in FIG. It is also possible to constitute a filtration membrane washing drainage channel that sucks bath water in the bathtub from the suction port and drains the water outside through the primary side of the filtration device.

The water in the circulation flow path is temporarily switched by the switching valve 26 and flows through the primary side of the microfiltration filter 4 to the drainage side. By doing so, the dirt floating in the filtration tank 9 on the primary side of the microfiltration filter 4 can be reliably discharged to the outside and discarded, and the purification ability of the microfiltration filter 4 can be restored. It is.

When forming and draining the over-membrane washing / draining passage, the washing nozzle 6 may be rotated as shown in FIG. That is, after forming the filtration membrane cleaning circulation channel shown in FIG. 3 and cleaning the microfiltration filter 4,
Alternatively, by rotating the washing nozzle 6 when draining dirt separated from the microfiltration filter 4 at the time of forming the normal bath water purification circulation channel shown in FIG. When the dirty water is drained by increasing the relative speed (speed) between the filter 4 and the water in the filter tank 9 and stirring, the water in the microfiltration filter 4 can be drained for a short period of time. Dirt) can be reliably drained, so that the amount of drainage water can be reduced and the dirt can be drained reliably.

After cleaning and drainage, when the bath water purification circulation channel shown in FIG. 2 for normal purification circulation is formed and switched to the flow channel for bath water, it remains in the bath water purification circulation channel. Since the amount of dirt is reduced, the filtration flow rate does not decrease rapidly after switching to the bath water purification circulation flow path shown in FIG. 2, and the purification flow rate can be kept large.

Further, by discharging the washing wastewater from the flowing water discharge port 5 of the washing nozzle 6 at the time of the drainage, the dirt on the surface of the microfiltration filter 4 can be peeled off by the impact force of the discharged flowing water even at the time of the drainage. , More surely wash,
The dirt can be removed and discharged to the outside.

When cleaning the microfiltration filter 4 by forming the filtration membrane cleaning circulation channel shown in FIG. 3, or by sucking bath water in the bathtub from the suction port of the circulation channel shown in FIG. In any case of forming and draining a filtration membrane cleaning drainage channel drained to the outside through the primary side of the device,
The water in the filtration filter 4 in which the microfiltration filter 4 is disposed is switched by the flow path switching 26 or an air pump 51 is provided as shown by an imaginary line in FIG. The primary side of the filtration filter 4 may be an air layer 52, and the flowing water jetted from the flowing water discharge port 5 of the washing nozzle 6 may collide with the precision filtration filter 4 in the air. Thus, the cleaning nozzle 6
By colliding the flowing water ejected from the flowing water discharge port 5 with the microfiltration filter 4 in the air, the impact force of the flowing water ejected from the flowing water discharge port 5 can be larger in the air than in the water even at the same flow rate. The dirt on the surface of the microfiltration filter 4 can be reliably removed and removed. Therefore, by jetting the running water spouting from the running water discharge port 5 of the washing nozzle 6 in the air, the flow rate recovery of the microfiltration filter 4 can be increased, and the purifying ability of the bath water washing apparatus can be increased. Further, since the cleaning power can be increased by increasing the impact force, the cleaning time of the microfiltration filter 4 can be shortened and the purification time of the bath water can be increased. In other words, it is possible for the user to be less concerned about the cleaning time of the microfiltration filter 4.

The cleaning water is ejected from the flowing water discharge port 5 of the cleaning nozzle 6 only with the cleaning bath water, or air is mixed into the bath water by an air pump or the like to improve the cleaning power by the impact force of the air being repelled. It may be.

Further, in the present invention, the rotating operation of the cleaning nozzle 6 can be rotated leftward as shown in FIG.
It is also possible to switch freely so as to be able to turn to the right, as shown in FIG. As described above, by switching the rotation direction of the cleaning nozzle 6 between the left direction and the right direction,
Since the relative speed (velocity) of the washing water in the microfiltration filter 4 and the filtration layer 9 can be largely switched between left and right, the filtration filter 4 can be largely twisted right and left. That is, dirt can be easily removed by the surface friction due to the twist of the microfiltration filter 4 itself, and by twisting the microfiltration filter 4, the way of contacting the running water ejected from the running water discharge port 5 of the washing nozzle 6 can be changed from various directions. The filter can be applied to the microfiltration filter 4, the water flow can be applied to a wide surface of the microfiltration filter 4, and the flow recovery of the microfiltration filter 4 can be improved. The reason why the rotation direction of the cleaning nozzle 6 is alternately switched is that in the circulation purification mode shown in FIG.
This can be performed in any of the modes in the membrane circulation cleaning mode shown in FIG. 4 and in any of the drain cleaning modes shown in FIG.

By providing a drainage port 55 on the lower surface of the filtration tank 9, the filtration membrane cleaning circulation channel shown in FIG. 3 is formed to clean the microfiltration filter 4, or the circulation flow shown in FIG. When the bath water in the bath tub is sucked in from the suction port of the road and drains to the outside through the primary side of the filtration device to form a filtration membrane washing drainage channel, the microfiltration filter 4 is peeled off by washing. , Dirt components accumulated in the lower part of the filtration tank 9 (usually, dirt components accumulate in the lower part if no water flow is generated)
Can be reliably circulated or drained from the drain port 55 provided at the lower part of the filtration tank 9, so that the flow maintenance time of the microfiltration filter 4 after cleaning can be lengthened, and the filtration and cleaning performance can be maintained long. Further, in this case, the air on the primary side of the microfiltration filter 4 provided for improving the detergency at the time of circulation cleaning or drainage does not entrap air into the circulation pump 3 (when air is entrained into the circulation pump 3). (Circulation flow rate is reduced), a high circulation flow rate can be secured, and a large detergency can be maintained.

Further, when the microfiltration filter 4 is cleaned by forming the filtration membrane cleaning circulation channel shown in FIG.
When the bath water in the bathtub is drawn in from the suction port of the circulation flow path shown in (1) and drained to the outside through the primary side of the filtration device, the filtration membrane cleaning and drainage flow path is constructed and drained. The primary side of the filter 4 is filled with cleaning water, and circulating cleaning and drainage are performed, whereby the cleaning water is distributed to various parts inside the microfiltration filter 4, and the impact force of the water jet ejected from the cleaning nozzle 6 is applied. The dirt separated from the surface of the microfiltration filter 4 is dissolved in the washing water, so that the dirt can be surely separated and drained. Thereby, the flow rate of the microfiltration filter 4 after washing can be maintained long,
Purification performance can be maintained for a long time.

In any of the above embodiments, an oxidizing agent such as hypochlorous acid is introduced into the primary side of the microfiltration filter 4. Here, the cleaning nozzle 6 having the flowing water discharge port 5 is continuously or temporarily rotated at or after the supply of the oxidizing agent such as hypochlorous acid to the primary side of the microfiltration filter 4. Is also good. By doing so, dirt on the surface of the microfiltration filter 4 can be easily oxidized and peeled off by an oxidizing agent such as hypochlorous acid. For example, after the wastewater washing mode shown in FIG. 4, the oxidizing agent is introduced while the purification circulating mode shown in FIG. The oxidizing agent is then returned to the bathtub 2 in a state where the oxidizing agent is mixed in the bath water, and the inner wall of the circulation channel 1 and the inner wall of the bathtub 2 are sterilized by the purifying circulation mode shown in FIG. Avoid it.

Here, when the oxidizing agent is introduced, the washing nozzle 6 is rotatably moved so that the introduced oxidizing agent such as hypochlorous acid can be surely mixed. All of the oxidizing agent added is used for cleaning and recovering the microfiltration filter 4 when the microfiltration filter 4 is washed and recovered, and for disinfecting the bathtub 2 when the cleaning of the bath water is circulated, without remaining in the primary-side filtration tank 9. The filter can be used for simultaneous recovery and cleaning of the filter and the sterilization in the bathtub 2. By rotating and stirring the washing nozzle 6, the chance of contact between the microfiltration filter 4 and an oxidizing agent such as hypochlorous acid can be increased to shorten the reaction time (shortening the immersion time). Can be). Furthermore, the microfiltration filter 4
Since chlorine passes through the microfiltration filter 4, the inside of the microfiltration filter 4 can be sufficiently oxidized by passing chlorine into the microfiltration filter 4, so that the recovery of the flow rate of the microfiltration filter 4 can be improved.

As described above, when the oxidizing agent is injected into the primary side of the microfiltration filter 4, the chlorine injection device 50 is provided in the middle of the inflow side pipe portion 22 which is the starting end of the bypass flow path 20. Then, hypochlorous acid is injected into the primary side of the microfiltration filter 4 from the flowing water discharge port 5 of the washing nozzle 4. An oxidizing agent such as hypochlorous acid is supplied from the flowing water discharge port 5 of the cleaning nozzle 4
Into the primary side of the tank, the oxidizing agent causes
Flow path is sterilized, and the running water discharge port 5 becomes dirty (slimy).
This ensures that the flow rate of the washing can always be reliably ensured without being clogged by such factors. When the cleaning nozzle 6 is simultaneously rotated when the cleaning water containing the oxidizing agent is discharged from the flowing water discharge port 5, the oxidizing agent and the cleaning water can be further mixed, and the reaction time and cleaning time can be improved. It can shorten the time.

In the above embodiments, when the oxidizing agent is charged, the above description shows an example in which the oxidizing agent is charged after the waste water washing mode shown in FIG. 4 and then the mode is shifted to the circulation purification mode. In the membrane circulation washing mode in which the filtration membrane washing circulation channel shown in (1) is formed to wash the microfiltration filter 4, chlorine may be supplied to the primary side of the microfiltration filter 4 and the washing nozzle 4 may be rotated. In addition, the drainage washing mode in which the bath water in the bathtub is sucked from the inlet of the circulation passage shown in FIG. 4 and drained to the outside through the primary side of the filtration device to form a drainage washing mode in which drainage is performed. At this time, chlorine may be supplied to the primary side of the fine filtration filter 4 and the washing nozzle 4 may be rotated. Also, a bath water purifying circulation channel is constructed in which the bath water in the bathtub is sucked and purified from the suction port at one end of the circulation channel shown in FIG. 2 and returned into the bathtub from the discharge port at the other end of the circulation channel. In the circulation purification mode in which the bath water is filtered and circulated, chlorine may be supplied to the primary side of the microfiltration filter 4 and the washing nozzle 4 may be rotated. Further, a separate stirring means may be provided for the washing nozzle 6 to stir the inside of the filtration tank 9. In addition, when the cleaning nozzle 6 is rotated after the oxidizing agent is supplied or when the oxidizing agent is supplied, the cleaning nozzle 6 may be rotated only in one direction.
It is also possible to switch the rotation between the left direction and the right direction and rotate alternately. Further, in the above embodiment, the example in which the cleaning nozzle 6 is rotated after the oxidizing agent is supplied or when the oxidizing agent is supplied is described. However, the cleaning nozzle 6 may not be rotated.

By the way, in the present invention, as described above, the normal operation mode in which the bath water shown in FIG. A membrane circulation washing mode in which bath water flows through the filtration membrane washing drainage channel shown in FIG. 4 to wash the microfiltration filter 4, and a drainage washing mode in which the membrane washing drainage is discharged to the outside after the membrane washing shown in FIG. And

Then, the output of the circulation pump 3 in the membrane circulating washing mode in which the bath water flows into the filtration membrane washing drainage channel shown in FIG. 3 to wash the microfiltration filter 4 during normal washing shown in FIG. (During normal operation mode). In this way, by increasing the output of the circulation pump 3 when cleaning the microfiltration filter 4 as compared with the normal cleaning, in the membrane circulation cleaning mode, more and more of the deposits adhering to the microfiltration filter 4 are separated and removed in a short time. As a result, the recovery of the purification ability of the microfiltration filter 4 can be improved more like a hollow fiber membrane. In addition, as described above, the purification ability of the equipment can be improved, and the cleaning time of the microfiltration filter 4 can be shortened, and the purification operation stops when the microfiltration filter 4 is washed. As a result, the discharge of bath water into the bathtub 2 stops, the temperature of the bathtub 2 tends to be uneven, and the unsuitable time for bathing does not increase, so that a stable bathwater purification operation can be performed.

After the microfiltration filter 4 has been washed in the above-mentioned membrane circulation washing mode, the wastewater is washed in the drainage washing mode as shown in FIG. At this time, the output of the circulation pump 3 in the drain cleaning mode is controlled to be smaller than the output of the circulation pump 3 in the normal operation mode or the membrane circulation cleaning mode. As described above, by making the output of the circulation pump 3 in the drain cleaning mode smaller than the output of the circulation pump 3 in the normal operation mode or the membrane circulation cleaning mode, the force of the drain during drainage is weakened, and the drain pipe (drain hose) is provided.
When draining into the bathroom from 27, it is possible to eliminate the scattering to the bathroom, and because the momentum of the drainage is weak, it is possible to reduce the noise at the time of drainage.
Since the momentum of the drainage is weak, the dirt deposited on the bottom of the filtration tank 9 can be smoothly discharged without stirring, and the dirt does not remain in the filtration tank 9 and the membrane flow rate of the fine filtration filter 4 is good. Can be maintained.

FIGS. 11 to 14 show another embodiment of the apparatus of the present invention. In the present embodiment, the second bypass channel 60 is further branched from the downstream side of the branch portion of the circulation channel 1 with the bypass channel 20, and the second bypass channel 60 is further switched via the switching valve 61. Electric field electrode tank 6
The flow path 60a flowing to the second side and the flow path 6 flowing to the salt dissolving tank 63
0b, the salt dissolving tank 63 and the electric field electrode tank 62 are communicated with each other by a communication path 60c, and the electric field electrode tank 62 and the bypass flow path 20 are connected by a connection flow path 60d.
An on-off valve 64 is provided in the connection flow path 60d. Valve means 24 and 24a are provided on the upstream side and the downstream side of the branch part of the second bypass flow path 60 of the circulation flow path 1, respectively. Further, in the present embodiment, the outflow side pipe portion 23 for discharging the filtered bath water from the filtration tank 9 is communicated near the discharge port 15 of the circulation flow path 1 as shown in FIG. FIG. 14 shows an example in which the suction port 14 and the discharge port 15 are provided in one suction / water discharge unit 65.

In this embodiment, as shown in FIG. 11, in the normal operation mode in which the bath water flows through the bath water purification circulation channel and the bath water is filtered by the microfiltration filter 4, the valve means 21 and the valve means 21 are provided. The means 24 and 24a are both opened, the flow path switching valve 26 is closed (closed so that bath water in the filtration tank 9 does not flow toward the communication path 25), and the switching valve 61 is closed (the salt dissolving tank 63, the electric field electrode tank 62). Then, the circulating pump 3 is operated with the on-off valve 64 closed, and the bath water sucked from the suction port 14 flows as shown by the arrow in FIG. The water is purified by the filtration tank 9 and flows to the discharge port 15, and another part of the bath water is heated by the heater 19 and flows to the discharge port 15, merges near the discharge port 15, and is returned to the bathtub 2. Things. Also, when performing membrane cleaning periodically, as shown in FIG. 12, both the valve means 21, the valve means 24 and 24a are closed, and the switching valve 61 is closed (bath water is supplied to the salt dissolving tank 63 and the electric field electrode tank 62). Closed so as not to flow), the on-off valve 64 is closed, and the flow path switching valve 26 is switched so that the communication path 25 communicates with the circulation flow path 1 and the drain pipe 2
7 is closed, the circulation pump 3 is operated in this state, and the bath water in the bathtub 2 is sucked from the suction port 14 as shown by an arrow in FIG. The filter film 12 is jetted from the flowing water discharge port 5 of the washing nozzle 6, and the dirt and adhered substances adhering to the surface of the filtration membrane 12 are peeled off. In the membrane circulation cleaning mode, the output of the circulation pump 3 is made larger than in the normal cleaning mode when the microfiltration filter 4 is washed, as in the above-described embodiment. When the cleaning of the microfiltration filter 4 is completed, the valve means 21, the valve means 24 and 24a are both closed as shown in FIG.
The switching valve 61 is closed (closed so that bath water does not flow into the salt dissolving tank 63 and the electric field electrode tank 62), the on-off valve 64 is closed, and the flow path switching valve 26 is switched to connect the communication path 25 and the drain pipe 27. The circulating pump 3 is operated to drain the bath water contaminated by the cleaning from the drain pipe 27. The output of the circulating pump 3 in the drain cleaning mode is set to the normal operation mode or the membrane circulation mode as in the above-described embodiment. This is to make the output of the circulation pump 3 smaller in the cleaning mode. In FIGS. 11 to 13, each valve shown in black indicates a closed state, and each valve shown in white indicates an open state.

In the present embodiment, the switching valve 61 is switched so that the bath water flows from the second bypass channel 60 to the salt dissolving tank 63 side. The salt solution is supplied to the electrode tank 62.
A pair of electrodes are provided in the electric field electrode tank 62, and by applying a voltage between the electrodes, chlorine and hypochlorite ions are generated in the electric field electrode tank 62, and the bath water can be given a sterilizing power. it can. Therefore, by temporarily flowing the chlorine water generated in the electric field electrode tank 62 during the normal operation to the filtration tank 9 side, the filtration tank 9 and the piping can be sterilized, and the chlorine water is also supplied to the bathtub 2. It can sterilize Legionella bacteria and the like. Of course, sterilization cleaning may be performed by supplying chlorine water also in the membrane circulation cleaning mode.

[0053]

According to the first aspect of the present invention, as described above, the circulation pump for circulating the water in the bathtub through the circulation channel and the microfiltration filter for filtering the water in the bathtub are provided. A bath water purifying apparatus provided with a washing nozzle having a running water discharge port rotatably provided on a primary side of the microfiltration filter by a rotating means, having a running water discharge port as a bath water purification circulation channel. Since the flow path is configured so that the bath water flows through the washing nozzle, the washing microfiltration filter can be washed with running water from a running water discharge port provided on the rotatable washing nozzle, and the microfiltration filter can be washed. To improve the purification capacity of the bath water purifier, and to clean and recover the microfiltration filter with a simple configuration, so that the life of the microfiltration filter can be extended, Water purification Location of life is also made long.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the cleaning nozzle is rotated at the time of bath water circulation purification and circulated from the flowing water discharge port of the cleaning nozzle. Since the bath water is blown out and collides with the microfiltration filter, it can prevent dirt from adhering to and fixing on the surface of the microfiltration filter by applying running water to the microfiltration filter even during bath water circulation purification. In addition, the cleaning operation of the bath water purification device is stopped because the dirt on the surface of the microfiltration filter is removed by the continuous or temporary rotation of the rotatable cleaning nozzle even during the circulation cleaning of the bath water. Without diluting the bath water circulation and simultaneously removing the dirt on the surface of the microfiltration filter. At this time, the dirt filtered by the microfiltration filter temporarily adheres to the surface of the microfiltration filter, but is separated by the jet of running water from the washing nozzle 6 and floats in the tank on the primary side of the microfiltration filter. As a result, the filtration hole on the surface of the microfiltration filter is not closed, the flow rate of the microfiltration filter does not decrease, and the flow path of the microfiltration filter can be recovered satisfactorily.

According to the third aspect of the present invention, in addition to the effects of the first aspect of the present invention, the bath water in the bathtub is sucked and purified by sucking bath water from the suction port at one end of the circulation flow path. A bath water purification circulation channel that returns to the bathtub from the discharge port at the other end of the channel, and a bathwater in the bathtub is suctioned from the suction port of the circulation channel and drained to the outside through the primary side of the filtration device. A filtration membrane cleaning drainage flow path, and the flow of bath water can be switched between the bath water purification circulation flow path and the filtration membrane cleaning drainage flow path. Since the washing nozzle is rotated when flowing, and the bath water is spouted from the running water discharge port of the washing nozzle, after washing the microfiltration filter,
Or, the relative speed (speed) between the microfiltration filter and the water inside the filtration tank is increased by rotating the washing nozzle when draining dirt separated from the microfiltration filter during normal bath water circulation filtration. By agitation, when dirt water is drained, dirt inside the microfiltration filter (retained) can be reliably drained with a short time of drainage, and the amount of drainage water can be reduced. . Also, after switching to the normal bath water purification circulation channel after washing and draining, the dirt remaining in the bath water purification circulation channel is reduced, so switching to the bath water purification circulation channel is performed. The purification flow rate can be maintained at a high level without a rapid decrease in the filtration flow rate later. In addition, by rotating the washing nozzle when flowing the bath water into the filtration membrane washing drainage flow path, and by ejecting the bath water from the flowing water discharge port of the washing nozzle, the water flowing from the flowing water discharge port can be more precise even during drainage. It can remove dirt on the surface of the filtration filter. As a result, the flow rate of the microfiltration filter can be restored, and the purification ability of the bath water purification device can be improved.

According to the fourth aspect of the present invention, in addition to the effect of the first aspect of the present invention, the primary side of the microfiltration filter is blown out from the flowing water discharge port of the washing nozzle as an air layer. Since the bath water collides with the microfiltration filter in the air, the bath water can collide with the microfiltration filter in the air. Can be made larger, and the dirt on the surface of the microfiltration filter can be reliably peeled off and removed. Therefore, the flow rate recovery of the microfiltration filter can be increased, the purification capacity of the bath water purification device can be increased, and the impact force can be increased to increase the cleaning power, and the cleaning time of the microfiltration filter can be reduced. In addition, bath water purification time can be extended.

According to a fifth aspect of the present invention, in addition to the effects of the first aspect of the present invention, the rotating direction of the cleaning nozzle is set to a counterclockwise direction or a clockwise direction. The relative speed between the microfiltration filter and the washing water in the filtration tank can be switched to the left or right by switching the direction of rotation of the washing nozzle to the left or right. This makes it possible to twist the microfiltration filter to the left and right greatly.As a result, dirt can be easily removed by surface friction due to the twist of the microfiltration filter itself, and by twisting the microfiltration filter, the cleaning nozzle can be cleaned. The water flowing from the flowing water discharge port can be applied to the microfiltration filter from various directions, and the water flow is applied to a large area of the microfiltration filter Bets are made, in which more can improve the flow recovery, can maintain a large washing power.

According to the sixth aspect of the present invention, in addition to the effects of the first to fifth aspects of the present invention, a drain port is provided at a lower portion on the primary side of the microfiltration filter. Since it is provided, it can be separated by washing the microfiltration filter, and the dirt component accumulated in the lower part (the dirt component normally collects in the lower part if there is no water flow) can be circulated and drained reliably, so that the fine filtration can be performed. It can extend the flow maintenance time after washing the filter and maintain the filtration and purification performance for a long time. Also, the primary filter of the microfiltration filter provided to improve the washing power during circulation washing or drainage Since the air on the side does not get caught in the circulation pump (the circulation flow decreases when the air is caught), a high circulation flow can be ensured, so that a large detergency can be maintained.

According to the seventh aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, since the primary side of the microfiltration filter is filled with washing water when draining, The washing water can be distributed to each part inside the microfiltration filter, and the dirt separated from the microfiltration filter surface can be dissolved in the cleaning water by the impact force of the cleaning nozzle, and the dirt can be separated and drained reliably. Thereby, the flow rate of the microfiltration filter after washing can be maintained long, and the purification performance can be maintained long.

According to the eighth aspect of the present invention, in addition to the effects of the first to seventh aspects, an oxidizing agent is supplied to the primary side of the microfiltration filter. As the cleaning nozzle is rotated, the dirt on the surface of the microfiltration filter can be easily oxidized and peeled off with an oxidizing agent such as hypochlorous acid. Oxidizing agents such as hypochlorous acid can be mixed securely, and there is no stagnation in the filtration tank on the primary side of the microfiltration filter. It can be used for cleaning and recovery of the filtration filter, used for sterilization in the bathtub at the time of circulating purification of the bath water, and can be used simultaneously for both recovery and sterilization of the microfiltration filter and sterilization in the bathtub, Also, Parts By stirring, is capable to shorten the reaction time by increasing the chance of contact oxidizing agent such as fine filter and hypochlorous acid.

According to the ninth aspect of the present invention, in addition to the effect of the eighth aspect, an oxidizing agent is supplied from the flowing water discharge port of the washing nozzle to the primary side of the microfiltration filter. In addition, the flow outlet of the cleaning nozzle is not clogged with dirt (slime) due to the oxidizing agent, so that the cleaning flow path can always be reliably ensured, and by rotating the cleaning nozzle simultaneously with the supply of the oxidizing agent. Since the stirring can be performed and the oxidizing agent can be surely mixed, the reaction time can be shortened and the washing time can be shortened.

In the invention according to claim 10,
In addition to the effects of the first aspect of the present invention, in addition to the normal operation mode in which the bath water is filtered by the microfiltration filter, the membrane circulation cleaning mode in which the microfiltration filter is cleaned, and the drainage of the membrane cleaning after the membrane cleaning. It has a drainage washing mode for discharging to the outside, and the output of the circulation pump in the membrane circulation washing mode for washing the microfiltration filter is larger than that in the normal washing mode. The amount of deposits on the filter can be removed and removed in a short time in a short time to improve the purification ability.In addition, the microfiltration filter can be cleaned in a short time, the time to stop the normal operation can be shortened, and the improper bathing time can be reduced. The bath water purification operation can be made short and stable.

In the invention according to claim 11,
In addition to the effects of the first aspect of the present invention, in addition to the normal operation mode in which the bath water is filtered by the microfiltration filter, the membrane circulation cleaning mode in which the microfiltration filter is cleaned, and the drainage of the membrane cleaning after the membrane cleaning. Equipped with a wastewater washing mode for discharging to the outside, and the circulation pump output in the wastewater washing mode is made smaller than the circulation pump output in the normal operation mode and the membrane circulation washing mode, so the momentum of the wastewater at the time of drainage is weakened Therefore, it is possible to eliminate the scattering to the bathroom, and also to reduce the noise at the time of drainage because the momentum of the drainage is weakened at the time of drainage. The dirt deposited on the surface can be discharged smoothly without stirring, and as a result, the purification ability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic piping diagram showing an entire embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a flow of water in a circulation cleaning mode according to the first embodiment.

FIG. 3 is an explanatory diagram showing a flow of water in a membrane circulation cleaning mode according to the first embodiment.

FIG. 4 is an explanatory diagram showing a flow of water in a wastewater washing mode according to the first embodiment.

FIG. 5 is a sectional view showing a specific example of the above device.

FIG. 6A is an explanatory view of a main part showing a flow of water in a circulation purification mode according to the embodiment, and FIG. 6B is an explanatory view of an example in which a washing nozzle is rotated.

FIG. 7A is an explanatory view of a main part showing a flow of water in a circulation cleaning mode according to the first embodiment, and FIG. 7B is an explanatory view of an example in which a cleaning nozzle is rotated.

FIG. 8A is an explanatory view of a main part showing a flow of water in a wastewater washing mode according to the embodiment, and FIG. 8B is an explanatory view of an example in which a washing nozzle is rotated.

FIG. 9A is an explanatory view of a main part showing a flow of water when air is mixed in the embodiment, and FIG. 9B is an explanatory view of an example in which the washing nozzle is rotated.

FIG. 10 is an explanatory diagram showing an example in which the cleaning nozzle is rotated leftward and rightward.

FIG. 11 is an explanatory diagram showing a flow of water in a normal operation mode of the device according to another embodiment of the present invention.

FIG. 12 is an explanatory diagram showing a flow of water in a membrane circulation cleaning mode according to the embodiment.

FIG. 13 is an explanatory diagram showing a flow of water in a waste water washing mode according to the embodiment.

FIG. 14A is a front view showing the whole of the same,
(B) is a sectional view of the suction / water discharge unit.

FIG. 15 is a piping diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circulation flow path 2 Bath tub 3 Circulation pump 4 Microfiltration filter 5 Running water discharge port 6 Washing nozzle 9 Filtration tank 14 Suction port 15 Discharge port

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 35/22 B01D 65/02 61/14 500 29/38 520C 65/02 35/02 J (72) Inventor Tsutomu Amaki Osaka 1048, Kazuma, Kadoma, Kadoma City, Matsushita Electric Works, Ltd. Inside the Denko Corporation (72) Inventor Koji Osada 1048 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside the Matsushita Denko Corporation (72) Inventor Yoshihiko Ujiie 1048 Odaka Kadoma, Kadoma City, Osaka Prefecture Inside the Matsushita Denko Corporation

Claims (11)

[Claims] 1. A circulating pump for circulating water in a bathtub in a circulation flow path, and a microfiltration filter for filtering water in the bathtub, wherein the primary side of the microfiltration filter is rotatable by a rotating means. In the bath water purifying apparatus provided with the washing nozzle having the installed flowing water discharge port, a flow path is configured so that the bath water flows through the washing nozzle having the flowing water discharge port as a bath water purification circulation flow path. Bath water purification equipment. 2. The bath according to claim 1, wherein the washing nozzle is rotated at the time of cleaning the circulation of the bath water, and the circulating bath water is ejected from the flowing water discharge port of the washing nozzle to collide with the microfiltration filter. Water purification device. 3. A bath water purification and circulation channel for sucking and purifying bath water in a bathtub from a suction port at one end of the circulation channel and returning it to the bathtub from a discharge port at the other end of the circulation channel. A filtration membrane cleaning drainage channel that draws in the bathwater in the bathtub from the suction port of the flow passage and drains to the outside through the primary side of the filtration device. And the drainage flow path for the filtration membrane cleaning drainage channel, so that when the bathwater flows through the filtration membrane cleaning drainage channel, the cleaning nozzle is rotated and the bathwater is ejected from the flowing water discharge port of the cleaning nozzle. The bath water purifying device according to claim 1, characterized in that: 4. The bath water according to claim 1, wherein the primary side of the microfiltration filter is used as an air layer, and the bath water spouted from the flowing water discharge port of the washing nozzle is caused to collide with the microfiltration filter in the air. Purification device. 5. The bath water purifying apparatus according to claim 1, wherein the rotating direction of the washing nozzle is switchable between a left-handed direction and a right-handed direction. 6. The filter according to claim 1, wherein a drain port is provided at a lower portion on a primary side of the microfiltration filter.
The bath water purification device according to any one of the above. 7. The bath water purifying apparatus according to claim 4, wherein when draining, the primary side of the microfiltration filter is filled with washing water. 8. The bath water purifying apparatus according to claim 1, wherein an oxidizing agent is supplied to the primary side of the microfiltration filter and the washing nozzle is rotated. 9. The bath water purifier according to claim 8, wherein an oxidizing agent is supplied to a primary side of the microfiltration filter from a flowing water discharge port of the washing nozzle. 10. A normal operation mode in which bath water is filtered by a microfiltration filter, a membrane circulation cleaning mode in which the microfiltration filter is washed, and a drainage cleaning for discharging the drainage of the membrane cleaning to the outside after the membrane cleaning. 2. The bath water purifying apparatus according to claim 1, wherein an output of the circulation pump in the membrane circulation cleaning mode for cleaning the microfiltration filter is made larger than that in the normal operation mode. 11. A normal operation mode in which bath water is filtered by a microfiltration filter, a membrane circulation cleaning mode in which the microfiltration filter is washed, and a drainage cleaning for discharging the drainage of the membrane cleaning to the outside after the membrane cleaning. 2. The bath water purifying apparatus according to claim 1, wherein the output of the circulation pump in the waste water washing mode is made smaller than the output of the circulation pump in the normal operation mode or the membrane circulation washing mode.