JPH07256264A - Apparatus for purification of water in bathtab - Google Patents

Abstract

PURPOSE:To obtain an apparatus for purification of water in a bathtab with a sterilization apparatus wherein sterilization can be performed conveniently, harmlessly to a human body and effectively. CONSTITUTION:Being independent from a main purification pipeline 14 wherein filtration is performed as a main function in such a way that hot water 2 in a bathtab 1 sucked through a hot water suction pipe 3 is treated by a purification treatment such as filtration by means of a filter tank 5 and is returned again into the bathtab 1 from a water ejecting pipe 9, an electrolytical sterilization pipeline 15 wherein the hot water in the bathtab 1 is pumped up from a sterilization hot water suction pipe 16 by means of a sterilization circulation pump 17 to store it in an electrolytic sterilization tank 18 and after it is electrolytically sterilized by energizing an electrode 21 from an electric source 22 for electrolysis for a specified time while it is stirred with air ejected from an air scattering plate 23 and it is ejected again into the bathtab 1 from a sterilization hot water ejecting pipe 19, is provided. As it is possible thereby that the hot water is treated by electrolytic sterilization with a strength of electrolysis and a time in accordance with the level of contamination of the hot water in the electrolytic sterilization pipeline, having no relation with purification in the main purification pipeline, sterilization can be performed with no possibility of harmful effects to the health caused by toxic gas in the hot water and electric shock to a person taking a bath.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water cleaning device, and more particularly to a sterilization device for this device.

[0002]

2. Description of the Related Art Bath water forcibly circulated in a bathtub by using a circulation pump to remove dirt from the hot water by a filtration device provided in a circulation path and then activated in an activated stone tank The purifying device has been conventionally developed.

More recently, in addition to simply removing dirt and activating it in hot water, it is heated by a heater to always maintain an appropriate temperature so that the user can take a bath at any time for 24 hours.

In this case, it is of course necessary to keep the hot water clean, but sterilization is also necessary in order to prevent the generation of bad odors and the growth of bacteria such as Escherichia coli.

In the past, sterilization of hot water was conventionally performed by chlorine sterilization with chemicals, but recently, a small high-pressure discharge type ozone generator, so-called ozonizer, was developed.
As shown in FIG. 8, most devices use an ozonizer for easy sterilization.

In this apparatus, the hot water 2 in the bathtub 1 is sucked up by a circulating pump 6 from a hot water pipe 3 having a prefilter 10 attached to the tip thereof to a main body 4 of the apparatus in which various cleaning treatment devices are collectively housed. The cleaning process is performed, and the hot water after the cleaning process is ejected again into the bathtub 1 from the spout tube 9 having the jet nozzle 11 attached to the tip thereof.

[0007] The apparatus body 4 is filled with various granular filter media such as activated carbon, barley stone, zeolite, etc., a circulating pump 6 for forcibly circulating hot water, and a heater 7 for keeping the hot water at an appropriate temperature. Etc. are connected in series by connecting pipes, and one end of the hot water pipe 3 is connected to the inlet of the filtering device 5 and one end of the jet pipe 9 is connected to the outlet of the circulation pump 7, respectively. A series of circulation circuits for the hot water 2 is formed.

The jet nozzle 11 attached to the tip of the spout tube 9 is provided with an ejector portion for inhaling air by using a negative pressure formed by accelerating the flow velocity of the hot water to mix air into the hot water. An intake pipe 12 having a solenoid valve 13 at its intake port is connected to the intake pipe 12, and an ozonizer 8 for ozone-izing the sucked air is attached to the intake pipe 12.

In the above apparatus, the hot water 2 in the bathtub 1 is sucked up from the hot water pipe 3 while the dirt is removed by the prefilter 10 by the operation of the circulation pump 6 and the apparatus main body 4
First, after being filtered by the filtering device 5, the temperature is kept warm by the heater 7, and then jetted again into the bathtub 1 from the jet nozzle attached to the tip of the spout tube 9.

At this time, air is sucked into the intake pipe 12 when the solenoid valve 13 provided at the intake port is open, and a jet flow mixed with air is jetted from the jet nozzle 11 into the bathtub 1.
It becomes a so-called bubble bath that is jetted into the interior, and when the ozonizer 8 is operating, the air that is drawn in is ozoned,
The hot water 2 in the bathtub 1 is sterilized by ozone.

[0011]

However, as described above, when ozone is sterilized by directly mixing ozone into the hot water circulating in the cleaning pipe, the reaction is completed with a short reaction time according to the circulation rate of the hot water. Since it has to be sterilized, excess ozone is inevitably mixed in the hot water.

As a result, a large amount of unreacted ozone remains in the hot water, and when hot water containing a large amount of unreacted ozone is jetted into the bathtub, a large amount of ozone is discharged from the bathtub to the bathroom. It is released into the bath and the bather not only becomes uncomfortable by sniffing the unique ozone odor, but it is also anxious about the health hazard if inhaled.

As described above, in order to prevent ozone from being released into the bathroom and harming the bather, ozone is mixed into the hot water in a pipe line upstream from the bathtub to remove the ozone from the hot water before entering the bathtub. It is also conceivable that unreacted ozone is separated by a gas-liquid separation device, the separated ozone is decomposed by a decomposition device to be harmless, and then exhausted.

However, since the gas-liquid separation device is provided, the cleaning device itself becomes complicated and expensive, and the ozone separated from the hot water cannot be easily decomposed because it is moist, and the decomposition is completely completed. In order to do so, a fairly large-scale and expensive disassembling device is required, which is not practical as a device for cleaning bath water.

Recently, in order to overcome the drawbacks of the ozone sterilization method in which ozone generated by the ozonizer is directly mixed with the hot water circulating in the cleaning pipeline, ultraviolet sterilization is often used.

In this sterilization method, an ultraviolet irradiating device having an ultraviolet irradiating lamp is installed in a cleaning conduit of bath water together with other cleaning equipment such as a filtering device in series, and the cleaning conduit is circulated. It is a method of sterilizing hot water by irradiating it with ultraviolet rays.

When the ultraviolet sterilizer is arranged in series in the cleaning pipe as described above, the sterilization time is determined by the circulation speed of the hot water and the size of the ultraviolet irradiation device, and the effect of other cleaning treatments such as filtration. Considering the above, the circulation speed of the hot water cannot be so slow, and the ultraviolet irradiation device cannot be made so large considering the size of the device, so the sterilization time was naturally shortened and it was difficult to completely sterilize the hot water.

Further, even in ultraviolet sterilization, oxygen in the air mixed in the hot water is turned into ozonization, so that there is a problem that ozone is mixed in the hot water.

The present invention solves the above-mentioned drawbacks of the prior art, and provides a bath water purifying device which has no fear of harming the human body due to unreacted ozone and is capable of completely sterilizing hot water. The purpose is to do.

[0020]

That is, the present invention is a bathtub hot water purifying device for cleaning hot water in a bathtub by forcibly circulating the hot water in a bathtub through a circulation path provided with various cleaning devices. In, independent of the main cleaning pipe which mainly sucks the hot water in the bathtub from the hot water pipe and filters it by the filter device, further heats it with a heater and then jets it again from the hot water pipe into the bathtub, An apparatus for cleaning bathtub hot water, which is provided with an electrolytic sterilization pipeline for sucking hot water in a bathtub from a sterilization hot water pipe, storing it in an electrolytic sterilization tank for electrolytic sterilization, and then ejecting it from the sterilization hot water pipe into the bathtub The electrolytic sterilization conduit is connected to the main cleaning conduit via a sterilizing spray pipe for spraying hot water after sterilization.

[0021]

The present invention is constructed as described above, and since the electrolytic sterilization pipeline is independent of the main purification pipeline mainly for filtration, it is not affected by the hot water treatment rate of the main purification pipeline. Thus, sufficient electrolytic sterilization can be performed by taking the necessary time depending on the degree of dirt in the hot water.

Further, since the electrolytic sterilization pipeline is independent of the main cleaning pipeline, it is not necessary to circulate the hot water during electrolytic sterilization through the bath, and the hot water stored in the electrolytic sterilization tank ends electrolytic sterilization and is electrolyzed. Just turn off the power and let it gush into the bathtub.

Therefore, if the electrolytic sterilization tank is completely insulated, there is no fear that the bather will get an electric shock even if electrolytic sterilization is performed during bathing.

When the sterilization spout tube of the electrolytic sterilization pipeline is connected to the main cleaning pipeline, if the connection position is the suction side pipeline of the circulation pump, the suction force of the circulation pump is used as it is, and the connection position is the circulation pump. In the case of the discharge side pipeline, the suction force of the ejector part that narrows the pipe diameter and speeds up the flow rate of hot water is used, and the sterilization pipeline does not need to be equipped with a circulation pump. The circulation pump works enough to circulate hot water.

[0025]

Embodiments of the present invention will now be described with reference to the drawings.

First, the basic construction of the present invention will be described with reference to the basic block diagram of FIG.

In the present invention, the circulation path for the hot water 2 in the bathtub 1 is a main purification line 14 which mainly comprises filtration by the filtration device 5.
And an electrolytic sterilization pipeline 15 provided with an electrolytic sterilization tank 18 for electrolytic sterilization.

The main cleaning pipeline 14 is a pipeline obtained by removing the sterilizing function from the above-mentioned conventional cleaning pipeline, so that the description thereof will be omitted, but the electrolytic sterilization pipeline 15 stores the hot water 2 in the bathtub 1. Sterilization hot water pipe 16 with circulation pump 17 installed in the middle of pumping
And electrolytic sterilization tank 18 for electrolytic sterilization by storing hot water for sterilization
And a sterilization spout tube 19 in which a filtering device 20 is provided while the hot water electrolytically sterilized in the electrolytic sterilization tank 18 is jetted to the bath 1 again.

The electrolytic sterilization tank 18 is connected to an electrode 21 for electrolysis to which an electrolysis power source 22 is connected, an air pump 25 for agitating the hot water during electrolysis, and an air supply pipe 24 provided with an electromagnetic valve 26. A board 23 is provided.

Reference numeral 27 is a control device for controlling the device as a whole by using a micro computer. The control device 27 stores hot water in the electrolytic sterilization tank 18,
Alternatively, driving the sterilization circulation pump 17 for ejecting the stored hot water after sterilization to the bathtub 1, energizing the electrolytic power supply 22 to the electrode 21 to electrolytically sterilize the stored hot water, and agitating the hot water for electrolysis Air pump 25 provided in the air supply pipe 24 for ejecting air from the air diffuser 23
And all operations of electrolytic sterilization of the hot water 2 in the bathtub 1 via the electrolytic sterilization pipeline 15 such as opening and closing of the solenoid valve 26 are controlled.

Next, a specific configuration of the present invention will be described based on the piping diagram.

FIG. 2 shows a first embodiment of the present invention,
The main cleaning line 14 mainly for filtration is a line obtained by removing the sterilizing function from the conventional cleaning line, and the ozonizer 8 is removed from the intake pipe 12 connected to the jet nozzle 11.

Reference numeral 15 is an electrolytic sterilization line that is completely independent of the main cleaning line 14, and this electrolytic sterilization line 15 is used for the bath 1.
A sterilization hot water pipe 16 in which a prefilter 28 is attached to the tip for pumping the hot water 2 inside, and a sterilization circulation pump 17 and a check valve 29 are provided on the way, and an electrolytic sterilization tank 18 for collecting hot water for sterilization and performing electrolytic sterilization. A sterilizing spout tube 19 provided with a filtering device 20 is connected in series while hot water stored in the electrolytic sterilization tank 18 and sterilized is jetted again into the bath 1.

In the electrolytic sterilization tank 18, a plate or rod-shaped cathode 30 is provided in the center as an electrode 21, and a plurality of plate-shaped anodes 31 are provided around the cathode 30. Reference numeral 31 is connected to the negative pole and the positive pole of the electrolytic power source 22, respectively.

As the above-mentioned electrode 21, a zinc or lead electrode having a low hydrogen overvoltage is used for the cathode 32, or an insoluble electrode such as a platinum-coated plate in which the surface of graphite, stainless steel, ferrite or titanium is coated with platinum. Of course, an insoluble electrode such as the platinum-coated plate as described above is used as the anode, and the cathode 30 is used to increase the oxidization area and increase the sterilization efficiency.
However, it is preferable to increase the area of the anode 31.

At the bottom of the electrolytic sterilization tank 18, the hot water reserved for electrolysis is uniformly stirred, and at the same time, the hydrogen gas generated during electrolysis is jetted with air for diluting it to a non-hazardous concentration and exhausting it. An air diffuser 23 is provided, and the air diffuser 23 is connected to the air pump 25 having an air pump 25 at its tip and subsequently an electromagnetic valve 26.

Further, on the upper surface of the electrolytic sterilization tank 18, a solenoid valve 33 is provided on the way to dilute the hydrogen gas generated during the electrolysis with the air jetted from the diffuser plate 23 and exhaust the hydrogen gas.
Is connected to the exhaust pipe 32.

In the apparatus of this embodiment constructed as described above, the hot water 2 in the bathtub 1 is first pumped by the operation of the circulation pump 6 while filtering large contaminants from the hot water pipe 3 by the prefilter 10. After being filtered by the filtering device 5 and kept at an appropriate temperature by the heater 7, it is circulated in the main cleaning pipe line 14 mainly composed of the filter which is again jetted from the molten metal pipe 9 into the bath 1.

In the circulation of the main cleaning pipe line 14, since the jet nozzle 11 to which the suction pipe 12 is connected to the negative pressure portion is attached to the tip of the spout pipe 9, the solenoid valve 13 should be opened to suck air from the suction pipe 12. As a result, a jet flow containing air is ejected from the jet nozzle 11 to form a bubble bath.

The hot water 2 in the bathtub 1 is the circulating pump 6 described above.
In addition to the circulation of the main cleaning line 14 by the operation of (1), the sterilization circulation pump 17 is operated to remove the large dirt with the prefilter 28 in the sterilization hot water suction pipe 16 and is electrolyzed in the electrolytic sterilization line 15.

That is, the sterilization circulation pump 17 is first operated for a time such that the hot water 2 in the bath tub 1 is stored in the electrolytic sterilization tank 18 up to a predetermined water level, and is automatically activated if the hot water is stored in the electrolytic sterilization tank 18 up to the predetermined water level. Stop.

If hot water is stored in the electrolytic sterilization tank 18 up to a predetermined water level and the sterilization circulation pump 17 is stopped, the solenoid valve 2
At the same time as 6 opens, the air pump 25 is activated and the air pipe 24
The air sent from is jetted from the diffuser plate 23 to stir the hot water 2, and at the same time, the electrolytic power source 22 is energized to the electrode 21 for a predetermined time to perform electrolytic sterilization.

As the electrolysis method, constant current electrolysis with a constant current, constant voltage electrolysis with a constant voltage, direct current electrolysis using direct current, alternating current electrolysis using alternating current, alternating direct current electrolysis using both alternating current and direct current, Although various methods such as high-frequency electrolysis using high frequency can be used, sufficient sterilization effect can be obtained even by direct current constant current electrolysis with simple equipment, as described later.

During this electrolytic sterilization, the hydrogen gas generated at the cathode 30 is exhausted while being diluted to a dangerous concentration with the air jetted to agitate the hot water so that concentration polarization does not occur from the diffuser plate 23. Therefore, the solenoid valve 33 of the exhaust pipe 32 is placed open.

When the sterilization for a predetermined time is completed, the solenoid valve 26
At the same time as closing, the operation of the air pump 25 is stopped to stop the ejection of air from the air diffuser plate 23, the power supply from the electrolysis power source 22 to the electrode 21 is stopped, and the solenoid valve 3 of the exhaust pipe 32 is stopped.
Also close 3.

After that, the circulation pump 17 is again operated for a predetermined time, and the electrolytically sterilized hot water in the electrolytic sterilization tank 18 is jetted from the sterilization spout pipe 19 into the bath 1 and, at the same time, the hot water 2 for the next sterilization is taken from the bath 1. Pump up.

Since the oxides such as metal ions generated by electrolytic oxidation are mixed in the hot water after the electrolytic sterilization as dirt, the dirt is filtered by the filtering device 20 provided in the middle of the sterilization spout tube 19. To do.

The above-described operation is repeatedly performed under the control of the control device 27, and the hot water 2 in the bath 1 circulates in the electrolytic sterilization conduit 15 and is continuously filtered mainly in the main cleaning conduit 14. Electrolytic sterilization is performed by a batch process regardless of the simple cleaning process.

Therefore, the time of the electrolytic sterilization treatment is completely independent of the circulation rate of the hot water in the main purification line 14 for the continuous purification treatment mainly consisting of filtration, and depends on the degree of contamination of the hot water. It is possible to sterilize completely no matter how dirty the hot water is, because it allows sufficient electrolytic sterilization time.

The time and current amount of this electrolytic sterilization treatment can of course be adjusted manually, but, for example, the sterilization time interval,
The turbidity of the hot water, the number of people bathing, etc. can also be automatically controlled by the control device 27 as an index.

Further, during electrolytic sterilization, no harmful gas is generated at all, and the hot water to be sterilized is not circulated in the bath tub. Therefore, even if electrolytic sterilization is performed during bathing, the bather can be healthy. No fear of harm or electric shock.

Next, a second embodiment will be described with reference to FIG.

The basic construction of this embodiment is the same as that of the first embodiment, and an ejector section for forming a negative pressure by increasing the flow velocity of the hot water by making the diameter of the molten metal pipe 9 of the main cleaning pipe 14 small. 34 is provided, and the end of the sterilization spout tube 19 of the electrolytic sterilization pipeline 15 is connected to the edger portion 34.

In this embodiment, since the hot water 2 in the bathtub 1 is circulated to the electrolytic sterilization pipeline 15 by the suction force of the ejector section 34, the electrolytic sterilization circulation path 15 has the same structure as in the first embodiment. It is not necessary to provide the sterilization circulation pump 17, and instead, the sterilization hot water pipe 16 has an electromagnetic valve 35 for opening and closing the hot water suction passage.
Is provided.

Therefore, in this embodiment, the main cleaning line 1
Under the control of the controller 27 when hot water is circulating in 4,
The electromagnetic valve 35 is opened for a predetermined time, the hot water 2 in the bath 1 is stored in the electrolytic sterilization tank 18 to a predetermined water level, the air pump 25 is operated, and at the same time, the electromagnetic valve 26 is opened to eject the air from the air diffuser plate 23 for a predetermined time. A predetermined current is supplied from the electrolysis power source 22 to the electrode 21, and the electromagnetic valve 33 is opened to evacuate the cell for electrolytic sterilization.

Next, a third embodiment will be described with reference to FIG.

In this embodiment, the jet nozzle 11 of the electrolytic sterilization conduit 15 serves also as the jet nozzle 11 having the ejector portion 34 provided at the tip thereof in the middle of the spray pipe 9 of the main cleaning conduit 14 in the second embodiment. Is the jet nozzle 11
Of the second embodiment, and the sterilization operation in this embodiment is exactly the same as that in the second embodiment.

In this embodiment, the solenoid valve 3 of the sterilizing hot water suction pipe 16 is used.
5 is closed so that the electrolytic sterilization tank 18 is not filled with hot water and the electrode 21 is not energized from the electrolytic power source 22, and the solenoid valve 33 is closed.
When the air pump 25 is opened and the air pump 25 is operated, a jet flow mixed with air is jetted from the jet nozzle 11 at the tip of the spout tube 9 to form a bubble bath.

Next, a fourth embodiment will be described with reference to FIG.

In this embodiment, in the second and third embodiments, the sterilization spout pipe 16 of the electrolytic sterilization pipe 15 is connected to the spout pipe 9 which is the discharge side of the circulation pump 6 of the main cleaning pipe 14. On the other hand, it is connected to the suction pipe 3 on the suction side through the three-way switching valve 36.

Therefore, the circulation of the hot water 2 in the bathtub 1 to the electrolytic sterilization pipeline 15 can be performed by utilizing the suction force of the circulation pump 6 of the main cleaning pipeline 14, and therefore, the second and third embodiments. As described above, it is not necessary to provide the germicidal spout tube 19 of the electrolytic sterilization pipeline 15 at the connecting portion of the main cleaning pipeline 14 with an edger section.

Therefore, in the present embodiment, under the control of the control device 27, the three-way switching valve 36 of the hot water suction pipe 3 of the main cleaning pipe 14 is moved in the direction of the sterilization hot water pipe 19 of the electrolytic sterilization pipe 15 for a predetermined time. If it is switched so that the hot water 2 in the bathtub 1 is circulated through the main cleaning pipe line 14 at the same time, it is pumped up to a predetermined water level in the electrolytic sterilization tank 18, and the air pump 25 is operated, and at the same time the solenoid valve 26 is turned on. Open and diffuser plate 2
3, air is ejected, and a predetermined current is supplied from the electrolysis power supply 22 to the electrode 21 for a predetermined time, and the electromagnetic valve 33 is opened to evacuate and electrolyze.

Further, in this embodiment, the sterilization hot water pipe 19 is connected to the hot water suction pipe 3 of the main cleaning line, and the hot water electrolytically sterilized in the electrolytic sterilization tank 18 is filtered by the filter device 5. It is not necessary to provide the filtering device 20 in the middle of the pipe 19.

As shown in the above second to fourth embodiments, the electrolytic sterilization pipeline 15 can be connected to the main purification pipeline 14 by connecting the sterilization spout tube 19 at any position. 14
Electrolytic sterilization can be performed in the electrolytic sterilization pipeline 15 independently of the cleaning mainly in the above, and the hot water 2 in the bathtub 1 can be electrolytically sterilized without a special circulation pump provided in the electrolytic sterilization pipeline 15. It is convenient to circulate in the pipe line 15 as needed.

The control relating to the electrolytic sterilization of the control device 27 of the device of the present invention configured as described above will be described with reference to the control block diagram of FIG.

The control device 27 is basically a microcomputer including a CPU 37 which is a central processing unit, a program ROM 38 which stores a control program, and a RAM 39 which temporarily stores data for arithmetic processing.

The input device is provided with a sterilization condition setting key 40 for setting the sterilization condition, which includes an automatic / manual switching key and an electrolytic strength setting key for setting the electrolysis strength by current or voltage. , Electrolysis time setting key for setting the electrolysis time, hot water stain degree setting key for determining the degree of dirt of hot water to automatically determine the interval of electrolysis sterilization, electrolysis strength and electrolysis time according to the degree of dirt of hot water Alternatively, a bathing person number setting key or the like for setting the bathing person number for one day to be determined by the bathing person number is provided.

Further, the sterilization interval and the sterilization time are automatically determined depending on the turbidity which is the degree of contamination of the hot water. For example, the transparency of the hot water is optically detected by a combination of a light emitting element and a light receiving element. A turbidity sensor 41 is installed in the bathtub 1,
Further, a sterilization interval and a sterilization time are set, and a timer 42 for measuring the elapsed time is also provided.

Reference numeral 43 denotes a sterilization control data storage device. This device stores data in which the relationship between the degree of contamination of hot water and the sterilization condition is previously obtained by an experiment or the like and programmed, and based on this data, the electrolytic sterilization pipe 15 The whole can be controlled automatically.

That is, the sterilization control day storage device 43 is
The sterilization time interval depending on the degree of contamination of the hot water, and the sterilization circulation pump 17 of the sterilization hot water pipe 16 or the solenoid valve 35, or the three-way switching valve of the hot water pipe 3 in order to make the amount of hot water absorption according to the capacity of the electrolytic sterilization tank 18. Various sterilization control data such as hot water absorption time after operating 36, electrolysis intensity and time are stored.

In the control device constructed as described above, the CPU 37 controls the sterilization conditions such as the degree of contamination of hot water set by the sterilization condition setting key 40, medium, small, and the number of people bathing, and the turbidity sensor 41. Sterilization control data corresponding to the sterilization conditions such as turbidity of the sterilization control data storage device 43 is called, and the sterilization circulation pump 17 of the sterilization hot water suction pipe 16 is used to circulate the hot water in the electrolytic sterilization pipe line 15 based on this data. Alternatively, the operation of the solenoid valve 35 or the three-way switching valve 36 of the hot water pipe 3 is first controlled.

The CPU 33 controls the current or voltage of the electrolysis power source 22 and the energization time in accordance with the set sterilization condition, and further operates the air pump 25 for air supply, opens and closes the solenoid valve 26, and exhausts air. The opening / closing of the solenoid valve 33 is also controlled based on the sterilization control data called from the sterilization control data storage device 39 so that complete electrolytic sterilization can be performed according to the degree of contamination of the hot water.

Next, according to FIG. 7 showing the relationship between the treatment conditions and the sterilizing effect when electrolytically sterilizing the bath water, according to FIG. 7, direct current electrolysis is carried out for about 5 to 10 minutes at a current density of about 1.5 A per square dm of the anode. Most of the general bacteria in the bath tub are removed,
It can be seen that bath water can be completely sterilized by electrolytic sterilization.

[0074]

The present invention has the above-described structure and operation, and is provided with an electrolytic sterilization conduit provided with an electrolytic sterilization tank independent of the main cleaning conduit mainly composed of filtration. Therefore, the sterilization can be completely carried out as a batch process by taking a sufficient time depending on the contamination of the hot water, regardless of the cleaning in the main cleaning line.

Moreover, since this electrolytic sterilization is carried out in a state where the bath water is not circulated in the bath, there is no fear of electric shock to the bather even if it is carried out during bathing, and of course no harmful gas is generated. There is no need to worry about any damage to your health.

Further, the structure of the apparatus can be made extremely inexpensive and simple by connecting the sterilization spout tube of the electrolytic sterilization pipeline to the main cleaning pipeline without the need for a special circulation pump in the electrolytic sterilization pipeline. it can.

Further, in this apparatus, when the sterilization time is adjusted by using the control device of the micro computer which uses the turbidity of the hot water or the number of bathers as an index, the sterilization time of the optimum time according to the dirt of the hot water can be obtained. It can be done automatically.

[Brief description of drawings]

[Figure 1] Basic block diagram,

FIG. 2 is a first embodiment,

FIG. 3 is a second embodiment,

FIG. 4 shows a third embodiment,

FIG. 5 is a fourth embodiment,

FIG. 6 is a control block diagram,

FIG. 7 is a table of electrolytic sterilization effect,

FIG. 8 shows a conventional example.

[Explanation of symbols]

 1 Bathtub 2 Hot water 3 Hot water pipe 4 Device body 5 Filtration device 6 Circulation pump 7 Heater 8 Ozonizer 9 Hot water pipe 11 Jet nozzle 14 Main cleaning pipe line 15 Electrolytic sterilization pipe line 16 Sterilization water suction pipe 17 Sterilization circulation pump 18 Electrolytic sterilization Tank 19 Sterilizing fountain tube 21 Electrode 22 Electrolytic power source 23 Air diffuser plate 24 Air supply pipe 27 Control device 30 Cathode 31 Anode 34 Ejector section 36 Three-way switching valve

Claims (2)

[Claims] Claim: What is claimed is: 1. A bathtub hot water purifying device which forcibly circulates hot water in a bathtub by a circulation pump in a circulation path provided with various cleaning devices to clean the hot water. Sterile hot water in the bathtub, independent of the main cleaning line that mainly sucks the water from the pipe, filters it with a filter, heats it with a heater, and then jets it again from the hot water pipe into the bath. An apparatus for cleaning bathtub hot water, which is provided with an electrolytic sterilization pipe line that sucks up from the sterilization tank and stores it in an electrolytic sterilization tank for electrolytic sterilization and then ejects it from a sterilization hot water pipe into the bathtub. 2. The apparatus for purifying bath water according to claim 1, wherein the electrolytic sterilization pipeline is connected to the main cleaning pipeline via a sterilizing jet pipe for spraying hot water after sterilization.