JPH11262770A - Slime preventing method and circulating warm bath device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slime preventing method excellent in the turbidity removing properties of bathtub water inclusive of bathtub water in the vicinity of the wall of a bathtub or the like, preventing the adhesion of slime to the wall of the bathtub or the like to enhance sanitariness and a circulating warm bath device capable of keeping stable purifying capacity over a long period of time and excellent in maintenance. SOLUTION: In a method for preventing the slime of a circulating warm bath device having a usual circulating step for circulating bathtub water 2 to a filter tank 14 having an aluminum electrode 18 to purify the bathtub water 2 by aluminum electrolysis, a stirring and circulating step wherein the circulating flow rate of the bathtub water 2 is raised at every definite time during the operation of a usual circulating step and the electrolytic current of aluminum electrolysis is raised to stir and circulate the bathtub water 2 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slimming prevention method for preventing slimming near walls such as a hot water pool, a public bath, and a home tub, and a bath tub provided with a function of coagulation treatment (purification) by aluminum electrolysis and heating and heat retention. The present invention relates to a circulating warm water bath for circulating and reusing bath water.

[0002]

2. Description of the Related Art In recent years, bath water used in a bath has been used.
A circulating hot water bath that circulates through a pre-filter (hair catcher), a filtration tank, an activation tank, and a heater for warming using a circulating pump to remove dirt, activate, and heat and maintain the water in the bath tub. Are also being used.

At present, circulating warm baths on the market include:
Most of them purify and deodorize bathtub water using biological treatment, but those that perform coagulation treatment by aluminum electrolysis have also attracted attention. In addition, it is necessary to prevent the generation of bad smell and Escherichia coli, Legionella spp., Staphylococcus aureus, Pseudomonas aeruginosa etc. in addition to removing the bathtub dirt.
An electrolyzer with an ultraviolet antibacterial device for antibacterial treatment, an ozone treatment with a small ozone generator, an antibacterial treatment with a silver-based antibacterial agent, and an electrolyzer for electrolyzing bath water And the like, which perform a process of returning acid water to bathtub water, have been developed.

[0004] A conventional circulating warm bath for performing coagulation treatment by aluminum electrolysis will be described below with reference to the drawings.

FIG. 7 is a schematic diagram of a conventional circulating warm bath system. In the figure, 1 is a bathtub, 2 is a bathtub water, 3 is a nozzle unit disposed in the bathtub 1, 4 is a water supply port for supplying the bathtub water 2 into the nozzle unit 3, and 5 is a water supply port from the water supply port 4. Check valve to prevent backflow of the bathtub water 2, 6 is a sponge,
A pre-filter (hair catcher) made of resin mesh such as polypropylene or a wound filter,
7 is a circulating warm water bath main body connected to the nozzle unit 3 via a circulating pipe 8, 9 is a flow rate sensor which is disposed on the circulating pipe 8 and detects the flow rate of the bathtub water 2 from the nozzle unit 3, 10 is a temperature sensor, Reference numeral 11 denotes a circulating pump of the circulating warm water bath main body 7, 12 denotes an antibacterial device for antibacterial and deodorizing bathtub water 2 sent from the circulating pump 11 using ultraviolet rays or ozone, and 13 connects the circulating pump 11 and the antibacterial device 12. Circulating pipe, 14 is a filtration tank, 15a and 15b are circulating pipes connecting the antibacterial device 12 and the filtration tank 14, 16 is a three-way valve arranged at a connection point of the circulating pipes 15a and 15b, 17
Is a heater for heating antibacterial and keeping the temperature of the filtration tank 14; 17a is a temperature sensor of the filtration tank 14; 18 is an aluminum electrode disposed in the filtration tank 14; 19 is a SUS electrode disposed in the filtration tank 14; Reference numeral 21 denotes a filter medium made of glass beads, ceramic balls, sand such as alumina, etc. disposed in the filtration tank 14, reference numeral 21 denotes a jet nozzle for returning the bath water 2 circulated in the circulating warm water bath main body 7 to the bath tub 1, 22a and 22b. , 22c
Is a circulation pipe connecting the circulating warm bath body 7 and the jet nozzle 21, 23 is a three-way valve arranged at a connection point of the circulation pipes 22a and 22b, and 24 is a three-way valve arranged at a connection point of the circulation pipes 22b and 22c. A valve, 25 is a backwash drain port for draining washing water that has washed the circulating warm water bath body 7, 26 is a three-way valve 1
6 is a backwash pipe connecting the backwash drain 25, 27 is a backwash pipe connecting the three-way valve 23 and the circulation pipe 13, 28 is a circulation pipe connecting the three-way valve 24 and the circulation pipe 8, 29
Is a power supply unit of the circulating warm water bath main body 7;
Is a display and operation unit of the circulating warm water bath main body 7.

The particle size of the filter medium 20 is about 0.3 mm to 1 mm, which is suitable for filtering the aggregate because the size of the aggregate formed by aluminum electrolysis is about 30 μm.
Is used.

[0007] The operation of the conventional circulating warm bath constructed as described above will be described below with reference to the drawings.

FIG. 8 is a view showing the flow of bathtub water during normal circulation of the circulating hot water bath, FIG. 9 is a view showing an antibacterial state of the filtration tank of the circulating hot water bath main body, and FIG. It is a figure which showed the flow of bathtub water at the time of heating antibacterial circulation of a vessel, and FIG. 11 is a figure which showed the flow of bathtub water at the time of backwashing of a circulating warm water bath.

First, for the normal circulation of the circulating warm bath,
This will be described with reference to FIG. When the normal circulation operation is started by the control unit 30, the three-way valve 16 moves in the a → c direction,
3, 24 are switched in the c → a direction. Next, the circulation pump 11 is driven to suck the bathtub water 2 in the bathtub 1 from the water supply port 4 of the nozzle unit 3, pass through the prefilter 6, and use the prefilter 6 to remove a large amount of hair and the like contained in the bathtub water 2. Dust is collected and further flows into the circulation pump 11 through the flow rate sensor 9 and the temperature sensor 10 via the circulation pipe 8.

Here, in order to prevent a decrease in the circulation flow rate, a pre-filter (particularly in the case of a sponge or the like) 6 is
Once every two weeks, they are regularly removed to remove large debris such as attached hair. Further, in the case of the pre-filter 6 composed of a wound filter, when the circulating flow rate of the bathtub water 2 becomes lower than a certain flow rate, the control unit 30 detects the circulating flow rate and the display and the operation unit 31 determine the cleaning or replacement time of the pre-filter 6. it's shown.

Next, the bathtub water 2 sent from the circulation pump 11 is supplied to the antibacterial device 12 using ultraviolet rays or ozone.
Antibacterial and deodorized by the filter tank 14 via the three-way valve 16
Flows into

In the filtration tank 14, an aluminum electrode 18 is used as an anode and a SUS electrode 19 is used as a cathode.
An electrolysis current of 0 mA to 20 mA is passed to perform electrolysis of aluminum in the bathtub water 2 to elute aluminum hydroxide in the bathtub water 2. The aluminum hydroxide is used as a suspension component (partially dissolved component) in the bathtub water 2. Aggregates certain small garbage and dirt (organic substances such as inorganic substances, proteins and lipids). Next, agglomerates such as small dust and dirt (organic substances such as inorganic substances, proteins and lipids) that cannot be removed by the pre-filter 6 by the filter medium 20 made of sand such as glass beads, ceramic balls, and alumina in the filtration tank 14. It is filtered (generally the current flow is called purification). The temperature of the bathtub water 2 is controlled by a heater 17 and a temperature sensor 17a for heating and antibacterial and keeping the temperature of the filter tank 14.

The bathtub water 2 purified in the filter tank 14 is returned to the bathtub 1 from the jet nozzle 21 via the three-way valves 23 and 24.

Here, the circulating flow rate during the normal circulation of the bathtub water 2 is approximately 16 l / min to 20 l / min, and the circulating flow rate is 22 l / min to 28 l by being manually operated by the display and operation unit 31. / Min to get a massage effect and increase the filtration speed of dirt, jet operation,
By setting the circulation flow rate to 22 l / min to 28 l / min and the electrolysis current to 100 mA to 300 mA, it is possible to carry out a rapid purification operation for increasing the efficiency of coagulation of dirt and the filtration speed.

Next, the antibacterial state of the filtration tank 14 of the circulating warm water bath body 7 will be described with reference to FIG.

When the control unit 30 starts the antibacterial action of the filtration tank 14 of the circulating warm water bath body 7, the three-way valve 23 is switched in the direction of c → b by interruption during the normal circulation operation, and the circulation pump 11 is stopped. Then, the circulation of the bath water 2 in the filtration tank 14 is stopped.

Next, the bath water 2 in the filter tank 14 is heated to a temperature of 70 ° C. to 85 ° C. by the heater 17 of the filter tank 14, and Legionella, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa in the filter tank 14 are heated. Antibacterial such as is performed.

The aluminum electrode 18 can be washed by circulating citric acid, acetic acid, malic acid or the like in the bath water 2 as necessary, or by taking out the aluminum electrode 18 and washing it manually. Electrode 18
The scale attached to is removed.

Next, a description will be given of the case of heating antibacterial circulation of the circulating warm bath with reference to FIG. When the heating antibacterial circulation operation is started by the control unit 30, the three-way valve 23 moves in the c → a direction,
The three-way valve 24 switches in the direction of c → b, and the circulation pump 11 operates to form a closed circuit circulation system as shown in FIG. 70 ° C. when the filtration tank 14 is in the antibacterial state
The bath water 2 in the filtration tank 14 heated to about 85 ° C. is circulated by the circulation pump 11, returns to the filtration tank 14 via the circulation pump 11 and the antibacterial device 12 via the three-way valves 23 and 24, and returns to the filtration tank 14. Antibacterial activities such as Legionella, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa in the filtration tank 14 and the circulation pipes 8, 13, 15a, 15b, 22a, 22b, 28 in the circulation system are performed.

As described above, in the conventional circulating warm water bath, the bath water 2 is heated to a temperature of 70 ° C. to 85 ° C. at which Legionella bacteria, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like can be antibacterial. The antibacterial and circulating warm baths are configured to perform heated antibacterial circulation several times a day.

Next, when the circulating warm bath is backwashed, FIG.
1 will be described. When the backwash operation is started by the control unit 30, the three-way valve 23 moves in the direction of b → c, and the three-way valve 16 moves in the direction of c →
It can be switched to the b direction.

The bath water 2 supplied from the water supply port 4 by the circulation pump 11 is supplied from the circulation pipe 8 provided with the flow rate sensor 9 and the temperature sensor 10 to the backwash pipe 27 and the three-way valve 2.
3. Flow into the filtration tank 14 via the circulation pipe 22a.

The bathtub water 2 that has flowed into the filtration tank 14 from the circulation pipe 22a adheres to and accumulates on the filter medium 20 in the filtration tank 14, along with accumulated dust and dirt and aluminum aggregates, etc. The circulation pipe 15b, the three-way valve 16, the backwash The water is drained from the drain 25 through the pipe 26.

The backwashing is performed at a flow rate (approximately 10 l / min to 20 l / min) and a frequency (several times a day) at which dirt such as dust and aluminum aggregates accumulated in the circulation system including the filter medium 20 can be removed. Is being done.

Hereinafter, a conventional circulating warm bath operating as described above will be described with reference to FIG.

FIG. 12 is a flow chart showing the operation of the conventional circulating warm bath. When the circulation of the bathtub water 2 is started (S1), the bathtub water 2 circulates between the bathtub 1 and the circulating warm bath main body 7 in the normal circulation (S2) to purify the bathtub water 2 by aluminum electrolysis. Next, the antibacterial start of the filtration tank 14 of the circulating warm bath main body 7 is determined (S3), and the circulating warm bath main body 7 is determined.
When the antibacterial activity of the filtration tank 14 is started, the control unit 30 switches the three-way valve 23 in the direction of c → b to stop the circulation of the bathtub water 2 and the circulation pump 11 (S4).
Filtration tank heating (S5) is started, and the antibacterial treatment in the filtration tank 14 is performed. Here, the filtration tank 14 of the circulating warm bath body 7
The determination (S3) of the start of antibacterial is interrupted during the normal circulation (S2) and is switched several times a day, and the antibacterial of the filtration tank 14 is performed. When the aluminum electrode 18 is to be washed, a circulating operation in which citric acid or the like is put into the bath water 2 or an operation of taking out the aluminum electrode 18 and washing it manually is interrupted.

After the antibacterial treatment by the heating of the filter tank (S5), the heating and antibacterial circulation (S6) is started by the control unit 30, and the inside of the filter tank 14 and the circulation pipes 8, 13, 15a, 15b, 2
Heat antimicrobial treatment of Legionella bacteria, Escherichia coli, Pseudomonas aeruginosa and the like in 2a, 22b and 28 is performed.

After the end of the heating and antibacterial treatment in the heating and antibacterial circulation (S6), the control unit 30 starts backwashing (S7), and dust and dirt accumulated in the circulation system of the bathtub water 2 including the inside of the filtration tank 14. Then, dirt such as aluminum agglomerates is discharged from the drain port 25, and the antibacterial action of the circulating warm bath ends (S8).

[0029]

However, the above-mentioned conventional circulating warm bath has the following problems.

In order to remove dirt such as small dust and dirt, which are suspended components (partially dissolved components) in the bath water, a circulation pump is used to separate the bath from the filtration bath having an aluminum electrode and a SUS electrode. Bath water is usually about 16 l / min to 20
At a circulation flow rate of 1 / min, an electrolytic current of about 10 mA to 20 mA is passed between the two electrodes to conduct aluminum electrolysis using the aluminum electrode in the filtration tank as the anode and the SUS electrode as the cathode, and aluminum hydroxide in the bath water. Small garbage and dirt (organic substances such as inorganic substances, proteins and lipids) that are suspended components (partially dissolved components) in the bath water
When the amount of suspended components in the bath water is large, the concentration of aluminum hydroxide in the bath water is too low, and the cohesive force of the suspended components is reduced. ), It is difficult to maintain the purification performance including stable turbidity, and there is a problem of lack of durability.

The speed (circulation flow rate) of bath water sent out from the jet nozzle during normal circulation is approximately 16 l / min.
２０20 l / min, but the actual circulating flow rate of the bathtub water near the bathtub wall is much less than 16 l / min-20 l / min, especially in the bathtub water near the bathtub wall. The aluminum concentration is low, the cohesive force of the suspended components is reduced, the bath water becomes turbid, the filtration efficiency is lacking, the suspended components remain near the wall of the bath, and the suspended components attached to the wall of the bath are converted into nutrient sources. As a result, microorganisms including bacteria and protozoa proliferate and slime occurs on the wall of the bath tub, thus causing a problem of poor hygiene.

A jet for increasing the coagulation efficiency of the suspended components in the bath water and the filtration speed by adjusting the circulation flow rate of the bath water and the electrolysis current of the aluminum electrolysis by manipulating the display and the operation section of the circulating warm bath artificially. Can perform operation and rapid purification operation, but cannot be performed regularly because it is operated and operated artificially, resulting in uneven purification of bathtub water and suspended components adhering to the bathtub wall There was a problem that slimming could not be prevented.

Also, in the event that the wall of the bathtub becomes slimy, an appropriate amount of a coagulant such as polyaluminum chloride or alum is poured into the bathtub water once a day to improve the turbidity performance after bathing. It is necessary to remove the slime that has physically adhered to the bathtub wall with a sponge etc.
The bathtub requires a lot of time and effort to maintain, and thus lacks in maintainability. In addition, there is a problem in that the bathtub cannot be reliably removed by slimming and lacks in hygiene.

The present invention solves the above-mentioned conventional problems and is excellent in turbidity of bathtub water including bathtub water near a wall of a bathtub or the like, and can prevent slimming adhering to a wall of a bathtub or the like beforehand. Providing anti-slimming method that can improve hygiene and maintaining stable purification performance over a long period (about 7 years)
An object of the present invention is to provide a circulating warm water bath having excellent maintainability.

[0035]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a method for preventing slime according to the present invention circulates bath water in a filter bath having aluminum electrodes and purifies the bath water by aluminum electrolysis. A method for preventing slimming of a circulating warm bath having a normal circulation step, wherein the circulating flow rate of the bath water is increased at regular intervals during the operation of the normal circulation step, and the electrolytic current of the aluminum electrolysis is increased. It is equipped with a stirring and circulating step of stirring and circulating bath water, which can prevent suspended components from adhering to the bath tub wall and causing slimming, and removing bath water including bath water near the bath tub wall. Turbidity can be improved.

The circulating warm water bath in the present invention is a circulating warm water bath for circulating bath water in a filtration tank having an aluminum electrode to purify the bath water by aluminum electrolysis. A control unit for increasing the circulating flow rate of the bathtub water and increasing the electrolytic current of the aluminum electrolysis to stir and circulate the bathtub water is provided, and periodically improves the aggregation efficiency of suspended components in the bathtub water. As a result, stable purification performance can be maintained for a long period (about 7 years), maintenance can be improved, and the durability of the circulating warm bath can be improved.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The slimming prevention method according to the present invention is directed to a circulating warm bath having a normal circulation step of circulating bath water through a filtration tank having an aluminum electrode and purifying the bath water by aluminum electrolysis. A method of preventing slimming, comprising: increasing a circulating flow rate of the bath water at regular intervals during the operation of the normal circulating step and increasing an electrolytic current of the aluminum electrolysis to stir and circulate the bath water. The concentration of aluminum hydroxide in the bathtub water can be increased by increasing the circulating flow rate of the bathtub water and the electrolytic current of the aluminum electrolysis, so that small debris that is a suspended component (partially dissolved component) in the bathtub water can be increased. It has the effect of being able to sufficiently aggregate dirt (organic substances such as inorganic substances, proteins and lipids). In addition, the concentration of aluminum hydroxide in the bathtub water near the wall of the bathtub can be increased, preventing the remaining suspended components from adhering to the vicinity of the bathtub wall and preventing bacteria that use the suspended components as a nutrient source. In addition, it has the effect of preventing the slimming of the wall of the bathtub, which is caused by the propagation of microorganisms including protozoa.

Here, the circulating flow rate of the bath water and the electrolytic current of the aluminum electrolysis are usually the circulation flow rate of 16 l / min to 20 l / min and the electrolytic current of 10 mA to 20 mA during the operation of the circulation step. If you have
The circulation flow rate is 20 l / mi during the operation of the stirring circulation step.
n to 35 l / min, preferably 22 l / min to 30
1 / min, and the electrolysis current is increased to 20 mA to 100 mA, preferably to 30 mA to 50 mA. Circulation flow rate is 20
When the electrolysis current is less than 1 mA / min and the electrolysis current is less than 20 mA, the concentration of aluminum hydroxide eluted into the bath water is too low to reduce the cohesive force of the suspended component, and particularly, the aluminum hydroxide near the wall of the bath tub. The concentration of the suspension is small and suspended components are likely to remain near the wall of the bathtub and cause slimming,
If the circulating flow rate is more than 35 l / min and the electrolytic current is more than 100 mA, aggregates generated in the bath water are destroyed at a strong circulating flow rate, or the concentration of aluminum hydroxide in the bath water becomes too large. Conversely, the cohesive strength decreases, and neither is preferable.

According to a second aspect of the present invention, there is provided a method for preventing slime according to the first aspect, wherein the stirring and circulating step comprises:
Instead of increasing the circulation flow rate or the electrolytic current, a coagulant such as polyaluminum chloride, alum, or citric acid is added to the bath water to stir and circulate the bath water, and about once a day. By adding an appropriate amount of coagulant such as polyaluminum chloride, alum, or citric acid to the bath water and stirring and circulating the bath water, it is possible to prevent suspended components from adhering to the walls of the bath bath and prevent slimming. This has the effect of improving the turbidity of bathtub water, including bathtub water near the wall of the bathtub.

In the case of a biological treatment type circulating warm water bath, an appropriate amount of a coagulant such as polyaluminum chloride, alum, or citric acid is added to the bath water and the bath water is circulated to adhere to the bath wall. Slicking can be prevented beforehand.

According to a third aspect of the present invention, there is provided a circulating hot water bath for circulating bath water through a filtration tank having an aluminum electrode to purify the bath water by aluminum electrolysis. A control unit is provided for increasing the circulating flow rate of the bathtub water every time and increasing the electrolytic current of the aluminum electrolysis to stir and circulate the bathtub water, thereby increasing the circulating flow rate of the bathtub water and the electrolytic current of the aluminum electrolysis. By stirring and circulating the bathtub water, the concentration of aluminum hydroxide in the bathtub water can be periodically increased, and small trash and dirt (inorganic substances, Organic matter such as proteins and lipids) can sufficiently coagulate, preventing suspended components from adhering to the bathtub wall and causing sliminess, and removing the bathtub water near the bathtub wall. An effect that can be improved clarification of free bath water. In addition, since the coagulation efficiency of the suspended components in the bathtub water can be periodically improved, there is an effect that stable purification performance can be maintained for a long period (about seven years).

Here, as the operation time for increasing the circulating flow rate of the bathtub water and increasing the electrolytic current of aluminum electrolysis to stir and circulate the bathtub water, the stirring and circulating is operated for about 10 minutes during the normal circulation operation for one hour. Is preferred. Thereby, it is possible to prevent the suspended components from adhering to the wall of the bathtub and causing slimming.

The circulating warm bath according to the fourth aspect is the third aspect of the present invention.
In the invention described in the above, a pre-filter consisting of a filter or the like disposed upstream of the circulation pump, and a three-way valve disposed at a connection point downstream of the filtration tank and upstream of the pre-filter By switching the three-way valve and circulating bath water in a closed circuit circulation system, the heating antibacterial of the pre-filter disposed upstream of the circulation pump during the heating antibacterial circulation of the circulating warm water bath. It also has the effect of being able to.

Hereinafter, a circulating warm bath in an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a circulating warm water bath system according to an embodiment of the present invention. Note that the same components as those in FIG. 7 are denoted by the same reference numerals and description thereof is omitted.

In the figure, reference numeral 24 'denotes a three-way valve, which is disposed at a connection point connecting the circulation pipe 22b downstream of the filtration tank 14, the circulation pipe 28' upstream of the prefilter 6, and the jet nozzle 21, and 30 '. Is a control unit having a normal circulation step, a stirring circulation step, and the like.

The particle size of the filter medium 20 such as glass beads, ceramic balls, and sand such as alumina in the filter tank 14 is approximately the size at which the aggregate formed to a size of about 30 to 40 μm by aluminum electrolysis can be filtered. 0.3mm ~
1 mm one is used.

Hereinafter, the operation of the circulating warm bath constructed as described above will be described with reference to the drawings.

FIG. 2 is a diagram showing the flow of bath water during normal circulation and stirring circulation of the circulating warm bath, and FIG. 3 is a diagram showing the antibacterial state of the filtration bath of the circulating warm bath main body. FIG. 4 is a diagram showing the flow of bathtub water during heating antibacterial circulation of the circulating hot water bath, and FIG. 5 is a diagram showing the flow of bathtub water during backwashing of the circulating hot water bath.

As shown in FIG. 2, the normal circulation of the circulating warm bath in the embodiment is the same as the normal circulation of the conventional circulating warm bath (FIG. 8), and the normal circulation is started by the control unit 30 '. Then, the three-way valve 16 moves in the direction a → c,
3, 24 'are switched in the direction of c → a, bath water 2 is discharged from the jet nozzle 21 to the bath 1 via the circulation pump 11, the antibacterial device 12, and the filtration tank 14, and between the bath 1 and the circulating warm bath body 7. At a circulation flow of 16 l / min to 20 l / mi
cycled with n. Here, an electrolysis current of 10 mA to 20 mA is passed between the aluminum electrode 18 and the SUS electrode 19 in the filtration tank 14 to perform aluminum electrolysis, and aluminum hydroxide is eluted into the bath water 2 and the bath water 2 Dust and dirt (organic substances such as inorganic substances, proteins and lipids), etc., which are suspended components (partially dissolved components), are aggregated and filtered.
The filter material 20 is filtered by the filter medium 20 of No. 4.

As shown in FIG. 2, during the stirring and circulation of the circulating warm bath in the embodiment, the three-way valve 16 moves in the direction a → c, and the three-way valves 23 and 24 'move toward the c as in the normal circulation of the circulating warm bath.
→ It remains in the a direction.

When the control unit 30 'interrupts the normal circulation operation and starts stirring circulation, the output of the circulation pump 11 rises and the circulation flow rate of the bathtub water 2 becomes 22 l / min.
1 / min, the electrolytic current in the aluminum electrolysis in the filtration tank 14 is increased to 30 mA to 50 mA, and the bath water 2 is circulated by the circulation pump 11, the antibacterial device 12,
The water is discharged from the jet nozzle 21 to the bathtub 1 through the filtration tank 14 and circulated between the circulating warm bath 7 and the bathtub 1. Here, the stirring and circulating operation is performed at regular time intervals during the normal circulation (for example, about 5 to 20 minutes per hour).

In the antibacterial action of the filtration tank 14 of the circulating warm water bath body 7 in the embodiment, the three-way valve 23 is switched by the control unit 30 ′ in the direction of c → b, and
Is stopped, and the circulation of the bathtub water 2 is stopped as shown in FIG. Next, the heater 17 of the filtration tank 14 is stopped while the circulation of the bathtub water 2 is stopped, similarly to the antibacterial state of the conventional filtration tank (FIG. 9).
The bath water 2 in the filter tank 14 is heated to a temperature of 70 ° C. to 85 ° C. by the filter tank heating means of the present embodiment, and Legionella, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa in the filter tank 14 are heated. Antibacterial such as is performed.

The heating antibacterial circulation in the embodiment is shown in FIG.
As shown in FIG. 10, the operation is the same as that of the conventional circulation warm water bath at the time of heating antibacterial circulation (FIG. 10).
4 ′ is switched in the direction of c → b, and the circulation pump 11 is operated again to form a closed-circuit circulation system as shown in FIG. 4, and the inside of the filtration tank 14 heated to a temperature of 70 ° C. to 85 ° C. Bath water 2 returns to the filter tank 14 via the pre-filter 6, the circulation pump 11 and the antibacterial device 12 via the three-way valves 23 and 24 ', and circulates in the closed circuit circulation system to circulate in the filter tank 14 and circulate. Pipes 8, 13, 15a, 15b, 2
Heat-bacterializes Legionella, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like in 2a, 22b, 28 '.

As shown in FIG. 5, the backwash in the embodiment is the same as that of the conventional circulating warm bath when backwashing is performed (FIG. 11). Valve 2
3 is switched in the direction b → c, the three-way valve 16 is switched in the direction c → b, and the bathtub water 2 supplied from the water supply port 4 is supplied to the circulation pipe 8.
Flows into the filtration tank 14 through the backwash pipe 27, the three-way valve 23, and the circulation pipe 22a, and adheres to and accumulates on the filter medium 20 in the filtration tank 14; 16, backwash pipe 26
The water is drained from the drain 25 through the drain.

Hereinafter, the operation of the circulating warm bath in the embodiment that operates as described above will be described with reference to FIG.

FIG. 6 is a flowchart showing the operation of the circulating warm bath in the embodiment. When the circulation of the bathtub water 2 is started (S10), the bathtub water 2 is circulated between the bathtub 1 and the circulating warm bath body 7 by the normal circulation (S11) at a flow rate of 16 l / m.
circulates at a rate of 20 to 20 l / min.
An electrolytic current of 10 mA to 20 mA flows between the aluminum electrode 18 and the SUS electrode 19 in the inside, aluminum hydroxide is eluted in the bath water 2, and the bath water 2 is purified by aluminum electrolysis.

Next, the normal circulation (S1
Bath water 2 by interrupting during 1) and stirring and circulating step 2
When the stirring circulation (S12) is started, the circulation pump 11
Output rises and the circulation flow rate becomes 22 l / min to 30 l / m
In, the electrolysis current at the time of aluminum electrolysis is raised to 30 mA to 50 mA, and bathtub water 2 circulates between bathtub 1 and circulating warm bath main body 7 to purify bathtub water 2 by aluminum electrolysis. Here, the stirring circulation (S12) is performed at regular intervals during the normal circulation (S11) (for example, about 5 to 20 minutes during an hour).

Next, it is determined (S13) whether or not the antibacterial operation of the filtration tank 14 of the circulating warm water bath main body 7 is started. The three-way valve 23 is switched in the direction of c → b, and the circulation pump 11 is stopped to stop the circulation of the bathtub water 2 in the filtration tank 14 (S14). Then, the filtration tank 14
Is determined (S15), and when the filtration tank 14 is to be heated, the heating of the filtration tank 14 is started by the control of the control unit 30 '(S16). , Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like are heated to a temperature of 70 ° C to 85 ° C to perform a heat antibacterial treatment.

After the antibacterial heating of the filtration tank 14 of the circulating warm water bath body 7, the heating and antibacterial circulation (S17) is started by the control unit 30 ', and the inside of the filtration tank 14 and the circulation pipes 8, 13, 15a,
15b, 22a, 22b, 28 'Legionella spp.
Heat antimicrobial treatment of Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like is performed. After the heat antibacterial treatment in the heat antibacterial circulation (S17), the backwashing (S18) is started by the control unit 30 ', and the filtration tank 14
Dirt and dirt accumulated in the circulating system of the bathtub water 2 including the inside and dirt such as aluminum aggregates are discharged from the drain port 25, and the antibacterial action of the circulating warm water bath ends (S19).

In the case of a biological treatment type circulating warm water bath, as described above, instead of increasing the circulation flow rate and the electrolytic current during stirring circulation, about once a day, an appropriate amount of polyaluminum chloride, alum or the like is aggregated. The agent may be introduced into the bath water to circulate the bath water.

As described above, according to the present embodiment, the output of the circulating pump is increased in the stirring and circulating step performed at regular intervals (for example, about 5 to 20 minutes per hour) during the normal circulating step. In addition to increasing the circulation flow rate, the electrolysis current during aluminum electrolysis is increased, and bath water is circulated between the bath tub and the circulating warm bath main body to perform aluminum electrolysis, so that bath water is provided, particularly near the wall of the bath tub. It can increase the concentration of aluminum hydroxide in the bathtub water, and can sufficiently coagulate small garbage and scale (organic substances such as inorganic substances, proteins, and lipids) that are suspended components (partially dissolved components) in the bathtub water. Has an action. In addition, it is possible to prevent suspended components from remaining near the wall of the bathtub and adhere thereto, and to prevent slimming of the wall of the bathtub caused by the propagation of microorganisms including bacteria and protozoa that use these suspended components as nutrients. It has the effect that it can be prevented.

Also, instead of increasing the electrolytic current in the case of a biological treatment type circulating warm bath or during stirring circulation, once a day,
A suitable amount of coagulant such as polyaluminum chloride, alum, citric acid, etc. is put into the bath water and the bath water is stirred and circulated to reduce the concentration of aluminum hydroxide in the bath water, especially near the wall of the bath. As a result, the cohesive force increases, and small garbage and dirt (organic substances such as inorganic substances, proteins and lipids), which are suspended components (partially dissolved components), in the bathtub water can be sufficiently coagulated, and the wall of the bathtub This has the effect of preventing slimming from occurring.

The function and effect of the present invention can be obtained also in the case of an apparatus for removing suspended components of drainage and kitchen garbage having the same configuration as the filter tank in this embodiment and a method for preventing slime.

[0065]

As described above, according to the present invention, the following excellent effects can be obtained.

According to the first aspect of the present invention, the concentration of aluminum hydroxide in the bath water can be increased by periodically increasing the circulating flow rate of the bath water and the electrolytic current of aluminum electrolysis in the stirring and circulating step. Small garbage and dirt (organic substances such as inorganic substances, proteins and lipids) which are suspended components (partially dissolved components) in water can be sufficiently aggregated,
The efficiency of aluminum electrolysis can be improved and the purification performance (coagulation effect) is excellent. In addition, by increasing the circulating flow rate of the bathtub water, the concentration of aluminum hydroxide in the bathtub water near the wall of the bathtub can also be increased, and it is possible to prevent suspended components from remaining near the wall of the bathtub and prevent them from adhering. The slimming of the wall of the bathtub, which is caused by the propagation of microorganisms including bacteria and protozoa using the suspended components as nutrients, can be prevented beforehand, and is excellent in hygiene.

According to the invention described in claim 2, according to claim 1
In addition to the effect of the above, once a day, an appropriate amount of coagulant such as polyaluminum chloride, alum, citric acid, etc. is put into the bath water and the bath water is stirred and circulated, so that it can be slicked on the bathtub wall. Can be prevented beforehand,
The turbidity of bathtub water including bathtub water near the wall of the bathtub can be improved, the filtration efficiency can be improved, and hygiene is excellent.

According to the third aspect of the present invention, since the control unit is provided with the stirring circulation which increases the circulation flow rate of the bath water and the electrolytic current of the aluminum electrolysis, the concentration of aluminum hydroxide in the bath water is reduced. It can be raised and can sufficiently coagulate small garbage and dirt (organic substances such as inorganic substances, proteins and lipids), etc., which are suspended components (partially dissolved components) in the bathtub water and suspended on the bathtub wall. Prevents slime from adhering to components, eliminating the hassle of removing slime adhering to the bathtub as in the past, has excellent maintainability, and bathtub water containing bathtub water near the wall of the bathtub Can also improve the turbidity, maintain stable purification performance for a long period of time (about 7 years), and excel in the durability of the circulating warm bath.

According to the invention set forth in claim 4, according to claim 3,
In addition to the effect of the above, the antibacterial heating of the pre-filter disposed upstream of the circulating pump can also be performed during the heating and antibacterial circulation in which the bathtub water is circulated by switching the three-way valve to a closed circuit circulation system. Excellent in nature.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a circulating warm water bath system according to an embodiment of the present invention.

FIG. 2 is a diagram showing the flow of bath water during normal circulation and stirring circulation of a circulating warm water bath.

FIG. 3 is a diagram showing an antibacterial state of a filtration tank of a circulating warm water bath body.

FIG. 4 is a diagram showing the flow of bathtub water during heating antibacterial circulation of a circulating warm water bath.

FIG. 5 is a diagram showing the flow of bathtub water during backwashing of a circulating warm water bath.

FIG. 6 is a flowchart showing the operation of the circulating warm bath in the embodiment.

FIG. 7 is a schematic diagram of a conventional circulating warm water bath system.

FIG. 8 is a diagram showing the flow of bath water during normal circulation of a circulating warm water bath.

FIG. 9 is a view showing an antibacterial state of the filtration tank of the circulating warm water bath body.

FIG. 10 is a diagram showing the flow of bathtub water during heating antibacterial circulation of a circulating warm water bath.

FIG. 11 is a diagram showing a flow of bathtub water during backwashing of a circulating warm water bath.

FIG. 12 is a flowchart showing the operation of a conventional circulating warm water bath;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Bathtub water 3 Nozzle unit 4 Water supply port 5 Check valve 6 Prefilter (hair catcher) 7 Circulating warm water bath body 8 Circulating pipe 9 Flow rate sensor 10, 17a Temperature sensor 11 Circulating pump 12 Antibacterial device 13 Circulating pipe 14 Filtration tank 15a, 15b Circulation pipe 16, 23, 24, 24 'Three-way valve 17 Heater 18 Aluminum electrode 19 SUS electrode 20 Filter medium 21 Jet nozzle 22a, 22b, 22c Circulation pipe 26, 27 Backwash pipe 28, 28' Circulation pipe 29 Power supply unit 30, 30 'control unit 31 display and operation unit

Claims (4)

[Claims] 1. A method for preventing slimming of a circulating warm bath having a normal circulation step of circulating bath water in a filtration tank having an aluminum electrode and purifying the bath water by aluminum electrolysis. A method for preventing slimming, comprising a stirring and circulating step of increasing a circulating flow rate of the bathtub water at regular intervals during operation and increasing an electrolytic current of the aluminum electrolysis to stir and circulate the bathtub water. 2. In the stirring and circulating step, instead of increasing the circulating flow rate or the electrolytic current, a flocculant such as polyaluminum chloride, alum, or citric acid is charged into the bath water to stir and circulate the bath water. The method according to claim 1, wherein the method is performed. 3. A circulating water bath for circulating bath water through a filtration bath having an aluminum electrode to purify the bath water by aluminum electrolysis, wherein the bath water is circulated at regular intervals during a normal circulation operation. And a controller for increasing the electrolysis current of the aluminum electrolysis and stirring and circulating the bath water. 4. A pre-filter comprising a filter or the like disposed upstream of the circulation pump, and a three-way valve disposed downstream of the filtration tank and at a connection point with the upstream of the pre-filter. 4. The device according to claim 3, wherein
The circulating warm bath described in 1.