JP2000343082A - Circulating warming bath device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circulating warming bath device excellent in maintenance, capable of preventing that the maintenance is forgotten, capable of maintaining stable purifying performance over a long period of time and also capable of improving the deturbiding property of bath tub water and capable of previously preventing the sticking of slime on the wall of a bath tub. SOLUTION: In the warming bath device, the bath tub water 2 is purified by aluminum electrolysis 18 by circulating the bath tub water 2 to a filter tank 14 having an aluminum electrode 18. In such a case, a flocculating agent is filled in a filter cartridge 6 disposed on the upstream side of the filter tank 14, and the flocculating agent is deposited on a cellulose bead with wax to slowly release, and sodium alginate is used as the flocculating agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating warm water bath having a function of coagulation (purification) by aluminum electrolysis and a function of heating and keeping heat, and circulating bath water in a bath for reuse.

[0002]

2. Description of the Related Art In recent years, bath water used once is circulated through a pre-filter (hair catcher), a filtration tank, an activation tank, a heater for keeping heat, etc. using a circulation pump to remove dirt from the bath water. A circulating warm bath for activating, heating and keeping warm has come to be used also in a general household bath.

At present, most circulating warm water baths in the market purify and deodorize bath water using biological treatment, but attention has also been paid to coagulation treatment by aluminum electrolysis. Also, besides removing dirt in the bath water, it also has bad odors and E. coli,
Because it is necessary to prevent the occurrence of Legionella spp., Staphylococcus aureus, Pseudomonas aeruginosa, etc., those equipped with an ultraviolet antibacterial device for antibacterial treatment, those equipped with a small ozone generator to perform ozone treatment, silver-based Further, those having an antibacterial agent and those having an electrolytic cell for electrolyzing bath water and returning acidic water to the bath water have been developed.

[0004] A conventional circulating warm bath using aluminum electrolysis will be described below with reference to the drawings. FIG. 8 is a system schematic diagram of a conventional circulating warm water bath. In the figure, 1 is a bathtub, 2
Is a bathtub water, 3 is a nozzle unit arranged in the bathtub 1,
4 is a water supply port for supplying bathtub water 2 into the nozzle unit 3, 5 is a check valve for preventing backflow of the bathtub water 2 supplied from the water supply port 4, 32 is a sponge, a mesh made of resin such as polypropylene, A prefilter (hair catcher) 7 composed of a wound filter or the like is a circulating warm water bath main body connected to the nozzle unit 3 via a circulating pipe 8.

Reference numeral 9 denotes a flow rate sensor which is disposed on the circulation pipe 8 and detects the flow rate of the bath water 2 from the nozzle unit 3.
0 is a temperature sensor, 11 is a circulating pump of the circulating warm bath body 7, 12 is a circulating pump 1 using ultraviolet light or ozone or the like.
An antibacterial device for antibacterial and deodorizing bathtub water 2 sent out from 1;
13 is a circulation pipe connecting the circulation pump 11 and the antibacterial device 12, 14 is a filtration tank, 15a and 15b are circulation pipes connecting the antibacterial device 12 and the filtration tank 14, and 16 is a circulation pipe 1.
A three-way valve disposed at the connection point of 5a 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, and 18 is an aluminum electrode disposed in the filtration tank 14. , 19 are SUs disposed in the filtration tank 14.
This is the S electrode.

Reference numeral 20 denotes a filter medium made of glass beads, ceramic balls, sand such as alumina, etc., disposed in the filtration tank 14, and has a particle size of about 0.3 to 0.5 mm. This particle size is a particle size at which aggregates formed by aluminum electrolysis and having a size of 70 μm or more can be filtered. Reference numeral 21 denotes a jet nozzle for returning the bathtub water 2 circulated in the circulating warm water bath main body 7 to the bath tub 1. Reference numerals 22a, 22b, and 22c denote circulating pipes connecting the circulating warm water bath main body 7 and the jet nozzle 21.
Is a three-way valve disposed at a connection point between the circulation pipes 22a and 22b, 24 is a three-way valve disposed at a connection point between the circulation pipes 22b and 22c, and 25 drains washing water that has washed the circulating warm bath body 7. A backwash drain port, 26 is a backwash pipe connecting the three-way valve 16 and the backwash drain port 25, 27 is a backwash pipe connecting the three-way valve 23 and the circulation pipe 13, and 28 is a connection between the three-way valve 24 and the circulation pipe 8. Reference numeral 29 denotes a power supply unit of the circulating hot water bath main body 7, 30 denotes a control unit (controller) of the circulating hot water bath main unit 7, and 31 denotes a display and operation unit of the circulating hot water bath main unit 7.

[0007] The operation of the conventional circulating warm bath constructed as described above will be described below with reference to the drawings. FIG. 9 is a diagram showing the flow of bath water during normal circulation of a conventional circulating hot water bath, FIG. 10 is a diagram showing an antibacterial state of the circulating hot water bath filtration tank, and FIG. FIG. 12 is a diagram showing a flow of bath water when the antibacterial heating is circulated, and FIG. 12 is a diagram showing a flow of bath water during back washing of the circulating hot water bath.

First, regarding the normal circulation of a 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 circulating pump 11 is driven to draw the bathtub water 2 in the bathtub 1 from the water supply port 4 of the nozzle unit 3 and the pre-filter 32.
And large dust such as hair contained in the bathtub water 2 is collected by the pre-filter 32, 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 a sponge or the like) 32 is periodically taken out once every one or two weeks to remove large dust such as attached hair. . Also, a pre-filter 32 composed of a wound filter is used.
In the case of (1), when the circulating flow rate of the bathtub water 2 drops below a certain flow rate, the control unit 30 detects it, and the display and the operation unit 31 indicate the cleaning or replacement time.

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.
A current of 0 to 40 mA is passed to perform aluminum electrolysis of the bath water 2 to elute aluminum ions into the bath water 2,
The aluminum hydroxide produced by this reaction with water aggregates small dirt, scale (organic substances such as inorganic substances, proteins and lipids), fungi, etc., which are suspended components (partially dissolved components) in the bathtub water 2. Next, agglomerates such as small dust and dirt (organic substances such as inorganic substances, proteins and lipids) which cannot be removed by the pre-filter 32 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 filtration tank 14 is supplied to the three-way valve 23,
It is returned to the bathtub 1 from the jet nozzle 21 via 24. Here, the circulating flow rate of the normal bathtub water 2 is 16 to 20 L.
/ Min, and the display and operation on the operation unit 31
Jet operation with a circulation flow rate of 22 to 28 L / min to obtain a massage effect and increase the filtration speed of dirt, a circulation flow rate of 22 to 28 L / min, and an electrolytic current of 100 to 300
A rapid purification operation can be performed to increase the aggregation efficiency and filtration speed of dirt at mA.

Next, the operation when the circulating warm water bath filtration tank 14 is heated at a high temperature will be described with reference to FIG. When the control unit 30 starts the antibacterial action of the circulating warm water bath filtration tank 14, the three-way valve 23 is switched in the direction of c → b by interruption during the normal circulation, and the circulation of the bath water 2 in the filtration tank 14 is stopped. . next,
The bath water 2 in the filtration tank 14 is heated by the heater 17 of the filtration tank 14.
Is heated to a temperature of 70-85 ° C.

The electrode may be washed by putting citric acid, acetic acid, malic acid or the like into the bath water 2 and circulating the scale as necessary, or by taking out the electrode and physically washing it by hand. Next, the time of heating antibacterial circulation of the circulating bath will be described with reference to FIG. When the heating and antibacterial circulation operation is started by the control unit 30, the three-way valve 23 switches in the c → a direction, and the three-way valve 24 switches in the c → b direction, and as shown in FIG.
A closed circuit circulation system is formed. By the circulation pump 11,
The bath water 2 in the filtration tank 14 heated to a temperature of 70 to 85 ° C. by the above-described high temperature heating of the filtration tank is supplied to the three-way valves 23 and 24.
Through the circulation pump 11 and the antibacterial device 12
4 again, circulates in the closed circuit circulation system and
Inside and circulation pipes 8, 13, 15a, 15b, 22a,
Antibacterial against Legionella, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like in 22b28. Thus, Legionella spp.
Temperature at which E. coli, Staphylococcus aureus, Pseudomonas aeruginosa, etc. can be antibacterial 7
The high temperature heating antibacterial circulation of the filtration tank 14 and the circulating temperature bath up to 0 to 85 ° C. is performed several times a day.

Next, FIG. 1 shows the time of back washing of the circulating warm bath.
2 will be described. When the backwash operation is started by the control unit 30, the three-way valve 23 moves in the direction b → c, and the three-way valve 16 moves 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 2.
7, filtration tank 14 via three-way valve 23 and circulation pipe 22a
Flows into The bathtub water 2 flowing 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 the accumulated dust, dirt, aluminum aggregates, etc., through the circulation pipe 15b, the three-way valve 16, and the backwash pipe 26. The water is drained from the drain 25 through the drain. The backwashing is performed at a flow rate (about 10 to 20 l / min) and a number of times (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.

Hereinafter, a conventional circulating warm water bath operating as described above will be described with reference to FIG. FIG. 7 is a flowchart showing the operation of the conventional circulating warm water bath. 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 circulating warm water bath is determined (S3), and the antibacterial operation of the circulating warm water bath is started.
→ Switch to direction b to stop circulation of bathtub water 2 (S
4), heating of the filtration tank (S5) is started.

Here, the antibacterial (S3) of the circulating warm water bath is interrupted during the normal circulation (S2) and is switched several times a day to operate. Also, when the electrode is washed, it has been interrupted to wash it by driving with citric acid or the like or to wash it manually. After the high temperature heating by the filtration tank heating (S5), the heating and antibacterial circulation (S6) is started by the control unit 30, and the inside of the filtration tank 14 and the circulation pipes 8, 13, 15a, 1
Heat antimicrobial treatment of Legionella spp., Escherichia coli, Pseudomonas aeruginosa and the like in 5b, 22a, 22b and 28 is performed. Heated antibacterial circulation (S
After the end of the heat antibacterial treatment in 6), backwashing (S7) is started by the control unit 30, and dirt and dirt accumulated in the circulation system of the bathtub water 2 including the inside of the filtration tank 14, and dirt such as aluminum aggregates. Is discharged from the drain port 25, and the antibacterial action of the circulating warm water bath ends (S8).

[0015]

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, the bath water is circulated using a circulation pump between the filtration tank having an aluminum electrode and a SUS electrode and the bath. Circulation, aluminum electrode in filtration tank is anode, SUS
Aluminum electrolysis is performed using the electrode as a cathode, and a current of about 10 to 40 mA is passed between the two electrodes to elute aluminum ions into the bath water, which is a suspended component (partially dissolved component) in the bath water. Aggregates small garbage, dirt (organic matter, organic matter such as protein and lipid), fungi, etc.
After that, small dust, dirt (organic substances such as inorganic substances, proteins and lipids), bacteria, etc., which are not removed by the pre-filter, are filtered out as aggregates by a filtration tank filled with filter media such as glass beads, ceramic balls, and sand such as alumina. During the cleaning (generally, purification), if there is a large amount of dirt such as small garbage and dirt (organic substances such as inorganic substances, proteins and lipids) (the aluminum ion concentration in the bath water is too low), there are dirt that cannot be coagulated with electrolytic aluminum. In this case (the cohesion balance cannot be obtained by charge neutralization), the cohesive force of the suspended component (partially dissolved component) is reduced, and it is difficult to maintain long-term stable purification including turbidity of the bath water. .

Further, since there is no stable turbidity performance, a large amount of metal soap insoluble in water formed by the reaction of the greasy lipids with Ca and Mg in the bath water, especially on the wall of the bath tub having poor bath water circulation efficiency. Small garbage and dirt (organic substances such as inorganic substances, proteins and lipids)
Have a problem that microorganisms including bacteria and protozoa are propagated by using them as a nutrient source, secrete sugars and proteins, and slime is generated on the wall of the bathtub. .

If the above problem occurs,
After bathing, an appropriate amount of polyaluminum chloride or a coagulant such as tomorrow or night is poured into the bath water about once a day to improve turbidity.
It is necessary to remove the slime that has physically adhered to the bathtub wall with a sponge etc. to remove slime about once a day. Problems such as troublesome maintenance and forgetting to maintain, and when slime adheres even after performing this work There is a problem that there is also.

The present invention has been made to solve the above-mentioned conventional problems, does not require maintenance, and prevents forgetting of maintenance.
Improves the turbidity of bath water, including bath water with insufficient cohesion due to lack of electrolytic aluminum ions and bath water that cannot be coagulated and clarified by electrolytic aluminum, and prevents slime from adhering to the walls of the bath tub. It is an object of the present invention to provide a circulating warm water bath capable of maintaining stable purification performance for a long period of time.

[0019]

In order to solve the above-mentioned conventional problems, a circulating bath in the present invention circulates bath water through a filtration tank having an aluminum electrode, and purifies the bath water by aluminum electrolysis. A circulating water bath, wherein a coagulant is introduced into the bath water to improve the filtration efficiency and prevent the bathtub from becoming slimey.

[0020] With this configuration, maintenance work is not required, maintenance is prevented, and bath tub water including bath tub water with insufficient cohesion due to insufficient aluminum ions and bath tub water that cannot be coagulated and clarified with electrolytic aluminum is prevented. The present invention can provide a circulating warm water bath capable of improving the performance, preventing slime from adhering to the bathtub wall, and maintaining a long-term stable purification performance.

[0021]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 is a circulating warm water bath for purifying the bath water by circulating bath water through a filtration tank having an aluminum electrode and purifying the bath water by aluminum electrolysis. It is designed to improve the filtration efficiency and prevent slime in the bathtub by being introduced into the tank water.

With this configuration, the turbidity component that is difficult to coagulate and filter by aluminum electrolysis and the turbidity component that cannot be coagulated due to lack of electrolytic aluminum ions are changed to an easily filterable size (to increase the cohesive strength), thereby improving the filtration efficiency. And prevent the slime of the bathtub.

The invention according to claim 2 is characterized in that the coagulant is
The circulating water bath according to claim 1, which is disposed in a filter cartridge portion disposed on an upstream side of the filtration tank. With this configuration, the coagulant can be prevented from being forgotten and an operation by a human operation (maintenance). Can be omitted.

According to a third aspect of the present invention, the coagulant is carried on wax by the cellulose beads and released for a predetermined period to prolong the coagulation period of the turbidity component in the bath water. The circulating warm bath according to claim 1 or 2, wherein the coagulant is carried by wax, and the coagulant is released as the wax is dissolved. And can maintain stable turbidity for a long period of time, and prevent slime in the bathtub.

The invention according to claim 4 is characterized in that the coagulant comprises:
The circulating warm water bath according to any one of claims 1 to 3, wherein sodium alginate is used. In addition to the effect of the flocculant, Ca and Mg in the bath water can be chelated by this configuration. It can be removed by the action, and the insoluble metal soap, which is the cause of slime generated by the reaction between the lipid of the scale and Ca, Mg in the bath water, is generated, and especially the circulation efficiency of the bath water is poor Prevents large amounts from adhering to the bathtub wall.

Hereinafter, a circulating warm bath according to 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, FIG. 2 (a) is a configuration diagram (cross-sectional view) of a filter cartridge of the circulating warm water bath, and FIG. FIG. 2 (c) is a cross-sectional view of the flocculant-containing cellulose beads in the filter cartridge, and FIG. 2 (d) is a manufacturing process diagram of the flocculant-containing cellulose beads. Note that the same components as those in FIG. 8 are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 1 and FIG. 2 (a), reference numeral 6 denotes a filter cartridge having a pre-filter (hair catcher) 32 made of a mesh made of a resin such as polypropylene, which contains an activated carbon 34 and a flocculant. Cellulose beads 33 are mixed and contained. The pre-filter 32 is for removing hair and large dust in the bathtub water 2 when the bathtub water 2 in the bathtub 1 is pumped up by the water inlet 4.

Next, the activated carbon 34 absorbs and removes debris (organic substances such as proteins and lipids, especially soluble organic substances), fungi, and ammonia and putrefactive odor contained in the bathtub water 2 from which hair and large dust have been removed by the pre-filter 32. The purpose is to deodorize. In this case, other adsorbents such as zeolite, deodorants or filter media may be used instead of activated carbon. When the pre-filter 32 is not a mesh net but a filter cartridge 6 for removing hair and large dust using a wound filter 35 (FIG. 2B), the flocculant-containing cellulose beads 33 are surrounded around the wound filter 35. Be deployed. In this case, a sponge may be used instead of the wound filter 35.

The flocculant-containing cellulose beads 33 change the turbidity component that is difficult to coagulate and filter by aluminum electrolysis and the turbidity component that cannot be coagulated due to lack of electrolytic aluminum ions to an easily filtered size (broadening the coagulation spectrum and increasing the cohesion force). ) Contains a flocculant that has the effect of changing to a size that is easy to purify. The coagulant containing aluminum is generally and chemically stable. Among them, Kali alum, aluminum sulfate,
PAC (polyaluminum chloride) or the like can be used.
Further, as a main coagulant of the present invention, sodium alginate, which is a coagulant having an ion exchange removal (chelating action) of metal ions such as Ca and Mg, may be mentioned.

Next, the structure of the flocculant-containing cellulose beads 33 will be described with reference to FIG. Since the flocculant 36 is slowly released over a predetermined period of time, the flocculant 36 is dissolved in the bath water 2 particularly in an amount of about 0.1 to 5 g per day (usually, 1 to 2 g has a flocculating power of easy filtration size). The following configuration is used in order to output. First, 38 is a flocculant 36
Is a nucleus for supporting nuclei. 37 is a wax having an action to carry the flocculant 55. According to the above-described configuration, a turbid component that is difficult to coagulate and filter by aluminum electrolysis and a turbid component that cannot be coagulated due to lack of electrolytic aluminum ions are changed to an easily filtered size by performing appropriate elution of the coagulant component (coagulation spectrum Spread,
By increasing the cohesive force), Ca, Mg, and the like, which are changed to a size that is easy to purify and prevent the generation of metal soap that easily adheres to the bathtub, which causes slime, are removed.

In this embodiment, a configuration is described in which the coagulant 36 is carried on the cellulose beads 38 by the wax 37 and slowly released over a predetermined period. Only 36 may be poured into the bath water 2 once a day (approximately 1 to 2 g usually has a cohesive strength of easy filtration size).

Further, with reference to FIG. 2 (d), an outline of the manufacturing process of the above-mentioned flocculant-containing cellulose beads 33 will be described. First, alum, aluminum sulfate, P
Fusing a coagulant such as AC (polyaluminum chloride) and sodium alginate and a natural wax as an embedding agent,
Impregnated with the melted, spherical cellulose that has a porous structure consisting of pores of several tens of μm, can be adjusted in the particle size range of 0.1 to 5 mm, has good biodegradability, and is easy to dispose. After that, by cooling, the flocculant-containing cellulose beads 33 in which the flocculant 36 is carried on the cellulose 38 by the wax 37 are obtained.

Reference numeral 24 'denotes a three-way valve provided at a connection point connecting the circulation pipe 22b downstream of the filtration tank 14 and the circulation pipe 28' upstream of the filter cartridge 6 to the jet nozzle 21, and 30 'a filtration tank. It is a control unit for controlling the heating means. 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 0.3 to 0.3.
The one having a size of about 0.5 mm is used. The particle size is set so that aggregates formed by aluminum electrolysis generated to a size of 70 μm or more can be filtered. Hereinafter, the operation of the circulating warm bath configured as described above will be described with reference to the drawings.

FIG. 3 is a diagram showing the flow of bath water during normal circulation of the circulating warm bath in one embodiment of the present invention, and FIG. 4 is a diagram showing the antibacterial state of the circulating warm bath filter tank. FIG. 5 is a diagram showing a flow of bath water when the antibacterial circulation of the circulating hot water bath is performed, and FIG. 6 is a diagram showing a flow of bath water during back washing of the circulating hot water bath.

As shown in FIG. 3, the normal circulation of the circulating hot water bath is the same as that of the conventional circulating hot water bath at the time of normal circulation (FIG. 9). The valve 16 is switched in the direction a → c, the three-way valves 23 and 24 ′ are switched in the direction c → a, and the bathtub water 2 is supplied from the jet nozzle 21 via the filter cartridge 6, the circulation pump 11, the antibacterial device 12 and the filtration bath 14. 1 is circulated between the bathtub 1 and the circulating warm bath main body 7 at a circulation flow rate of 16 to 20 L / min, and performs aluminum electrolysis with an electrolysis current of 10 to 40 mA to remove large dust such as hair in the bathtub water 2. It is removed by the pre-filter 32 of the filter cartridge 6, and small garbage and dirt (inorganic substances) which are suspended components (partially dissolved components) which cannot be removed by the pre-filter 32.
Organic substances such as proteins and lipids), fungi and the like are aggregated and filtered in the filtration tank 14.

To prevent slime in the circulating warm water bath, the bath water 2 is circulated through the filter cartridge 6 containing the flocculant-containing cellulose beads 33 and the activated carbon 34 as shown in FIG. About 0.1 to 5 g of flocculant 36 (particularly sodium alginate)
~ 2 g has cohesive power of easy filtration size) It is dissolved in bath water 2 and turbidity components that are difficult to coagulate and filter by aluminum electrolysis and turbidity components that cannot coagulate due to lack of electrolytic aluminum ions are easily filtered. By changing it (by broadening the cohesive spectrum and increasing the cohesive strength), it is changed to a size that is easy to purify and prevents the generation of metallic soap that easily adheres to the bathtub, which causes slime.
a, Mg and the like are removed. Activated carbon 3
4 assists the aluminum electrolysis and the coagulation filtration by the coagulant, removes debris (organic substances such as proteins and lipids, especially soluble organic substances), fungi and the like, and deodorizes ammonia, putrefaction odor and the like.

In the antibacterial operation of the circulating warm water bath, the control unit 30 'switches the three-way valve 23 in the direction of c → b.
The circulation pump 11 is stopped, and the circulation of the bathtub water 2 is stopped, as shown in FIG. Next, similarly to the conventional heating of the filter tank (FIG. 10), while the circulation of the bath water 2 is stopped, the heater 17 of the filter tank 14 (the filter tank heating means of the present embodiment) is used. 2 is heated to a high temperature of 70-85 ° C. The electrode may be washed with citric acid, acetic acid,
Malic acid or the like is placed in the bathtub water 2 and circulated to take scales, or the electrodes are taken out and hand-washed.

As shown in FIG. 5, the heating antibacterial circulation is the same as the heating antibacterial circulation of the conventional circulating warm bath (FIG. 11). When the heating antibacterial circulation is started by the control unit 30 ',
The three-way valve 23 is switched in the direction c → a and the three-way valve 24 ′ is switched in the direction c → b, and the circulation pump 11 is operated again to form a closed-circuit circulation system as shown in FIG. Bath water 2 in filtration tank 14 heated to 85 ° C
Returns to the filtration tank 14 via the filter cartridge 6, the circulation pump 11 and the antibacterial device 12 via the three-way valves 23 and 24 ', circulates in the closed circuit circulation system, and circulates in the filtration tank 14 and the circulation pipes 8 and 13. , 15a, 15b, 22a, 22
b, heat-bacterializes Legionella, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and the like in 28 ′. In this way, the heating antibacterial circulation of the filtration tank 14 and the circulating bath is performed several times a day to a temperature of 70 to 85 ° C. at which antibacterial Legionella, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa can be antibacterial.

As shown in FIG. 6, the backwashing is the same as that of the conventional circulating warm bath (FIG. 12). When the control unit 30 'starts backwashing, the three-way valve 23 is set to b. → The c-direction and the three-way valve 16 are switched in the c → b direction, and the bathtub water 2 supplied from the water supply port 4 is returned from the circulation pipe 8 to the backwash pipe 2.
7, filtration tank 14 via three-way valve 23 and circulation pipe 22a
Along with dust and dirt and aluminum agglomerates and the like adhering to and accumulating on the filter medium 20 in the filtration tank 14 through the circulation pipe 15b, the three-way valve 16, and the backwash pipe 26.
Drained from 5. The backwashing is performed at a flow rate (10 to 20 L / min) capable of removing dirt such as dust accumulated in the circulation system including the filter medium 20, aluminum aggregates, and aggregates formed by the flocculant.
Degree) and the number of times (about twice a day).

Hereinafter, the operation of the circulating warm bath in the embodiment that operates as described above will be described with reference to FIG. FIG. 7 is a flowchart showing the operation of the circulating warm water bath in one embodiment of the present invention. When the circulation of the bathtub water 2 is started (S1), the bathtub water 2 is normally circulated (S2).
Circulates between the bathtub 1 and the circulating warm bath body 7 in a flow rate of 16 to 20 L.
/ Min, and a current of about 10 to 40 mA is circulated to purify the bathtub water 2 by aluminum electrolysis. Next, when the antibacterial start of the circulating warm water bath is determined (S3) and the antibacterial operation of the circulating warm water bath filtering tank 14 is started, the three-way valve 23 is switched in the direction of c → b by the antibacterial step of the control unit 30 ′. , The circulation pump 11 stops and the filtration tank 14
The circulation of the bathtub water 2 in the inside is stopped (S4), and the heating of the filtration tank 14 (S5) is started, and the filtration tank 14 is filled with Legionella spp.
Temperature at which E. coli, Staphylococcus aureus, Pseudomonas aeruginosa, etc. can be antibacterial 7
Perform high temperature heating to 0-85 ° C. Here, the antibacterial (S3) of the circulating warm bath is interrupted during the normal circulation (S2) and is switched several times a day to operate.

Also, when cleaning the electrode, it is necessary to insert citric acid or the like in the operation to perform the cleaning or to perform the manual cleaning. After the high temperature heating by the filtration tank heating (S5), the heating and antibacterial circulation (S6) 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 are subjected to heat antibacterial treatment of Legionella, Escherichia coli, Pseudomonas aeruginosa and the like. After the end of the heating antibacterial treatment in the heating antibacterial circulation (S6), the backwashing (S7) is started by the control unit 30 and the bathtub water 2 including the inside of the filtration tank 14 is removed.
The dirt such as dust and dirt and aluminum agglomerates accumulated in the circulating system is discharged from the drain port 25, and the antibacterial action of the circulating warm bath ends (S8).

As described above, according to the present embodiment, the bath water 2 is circulated through the filter cartridge 6 containing the flocculant-containing cellulose beads 33 and the activated carbon 34. About 0.1 to 5 g (usually 1 to 2 g has easy cohesion of easy filtration size) of the agent is dissolved in bath water 2, and turbidity component which is difficult to coagulate and filter by aluminum electrolysis, due to lack of electrolytic aluminum ion By changing the turbidity component that cannot be coagulated to an easily filtered size (broadening the coagulation spectrum and increasing the cohesive strength), the turbidity component is changed to a size that is easy to purify. Soil such as small garbage and dirt (organic substances such as inorganic substances, proteins, and lipids), which are partly dissolved components, remains near the wall of the bathtub 1 and adheres to the wall of the bathtub 1 and further enhances them. Microorganisms, including bacteria and protozoa breeding as a source, has an action capable of preventing slime occurs bathtub wall.

In particular, when the coagulant 36 is sodium alginate, in addition to the above-mentioned coagulant action, removal of Ca, Mg, etc., which prevents the formation of metal soap, is performed.
It has the effect of preventing the adhesion of these to the walls and the propagation of microorganisms including bacteria and protozoa using them as nutrients, and the generation of slime on the walls of the bathtub 1. As specific data, the slime level of the conventional circulating warm bath was 3.0 at the average sensory level, but the slime level of the circulating warm bath of the present invention was improved to 1.5 at the average sensory level (sensory level). Level: 1: Feeling close to hot water 2: Feeling a little
3: Feel, 4: Feel fairly well, but can take a bath, 5: Feel so hard to take a bath).

If the bath water 2 is circulated through the filter cartridge 6 containing the flocculant-containing cellulose beads 33 and the activated carbon 34 in the present embodiment, the forgetting of the flocculant 36 can be prevented. It is possible to obtain the function and effect of saving maintenance work.

[0045]

According to the first aspect of the present invention, an appropriate amount of coagulant is added to bath water to broaden the coagulation spectrum and improve cohesion. By improving the filtration efficiency by changing the turbidity component that is difficult to filter and the turbidity component that cannot be aggregated due to lack of electrolytic aluminum ions to an easily filterable size (increases the cohesive strength), the turbidity of bathtub water is improved and Slime can be prevented from being generated on the wall of the bathtub, and it is not necessary to remove the slime physically attached to the wall of the bathtub with a sponge or the like to remove the slime about once a day as in the past. It has excellent maintainability and can maintain the purification performance of the circulating warm bath stably for a long period of time, and can perform efficient aluminum electrolysis to improve the purification performance (coagulation effect). That.

According to the second aspect of the present invention, since the flocculant is disposed in the filter cartridge portion disposed on the upstream side of the filtration tank, an effect of preventing the coagulant from being forgotten and a troublesome operation by a human operation. Maintenance work is eliminated, maintenance work is not required, and maintenance can be prevented. For this reason, bath water containing bath water with insufficient cohesion due to insufficient electrolytic aluminum ions and bath water that cannot be coagulated and clarified with electrolytic aluminum can be used. Turbidity can be prevented, slime can be prevented from adhering to the wall of the bathtub, and the reliability of maintaining long-term stable purification performance can be improved.

According to the third aspect of the present invention, since the flocculant is carried on the cellulose beads by the wax, the flocculant carried by the wax is released as the wax dissolves. Since the release period can be adjusted, the release period of the turbidity component in the bathtub water can be extended by performing release for a predetermined period, and stable turbidity over a long period of time Performance can be maintained,
In addition, the slime of the bathtub can be prevented, the turbidity of the bathtub water can be improved, and the generation of slime on the wall of the bathtub can be prevented.

According to the fourth aspect of the present invention, by using sodium alginate as the coagulant, in addition to the above-mentioned effect of the coagulant, Ca and Mg in the bath water can be removed by a chelating action. As a result, the insoluble metal soap, which is the cause of the slime formed by the reaction of the lipid of the scale and Ca and Mg in the bath water, is generated. Adhesion can be prevented beforehand, thereby further improving reliability.

[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. 2A is a configuration diagram (cross-sectional view) of a filter cartridge of a circulating warm water bath according to an embodiment of the present invention (cross-sectional view); and FIG. 2B is a configuration diagram of a filter cartridge using a wound filter according to an embodiment of the present invention. c) Cross-sectional view of flocculant-containing cellulose beads in the filter cartridge according to one embodiment of the present invention. (d) Manufacturing process diagram of flocculant-containing cellulose beads according to one embodiment of the present invention.

FIG. 3 is a diagram showing a flow of bathtub water during normal circulation of the circulating warm water bath in one embodiment of the present invention.

FIG. 4 is a diagram showing an antibacterial state of a circulating warm water bath filtration tank according to an embodiment of the present invention.

FIG. 5 is a diagram showing a flow of bathtub water at the time of heating antibacterial circulation of the circulating warm water bath in one embodiment of the present invention.

FIG. 6 is a diagram showing a flow of bathtub water during backwashing of a circulating warm water bath according to one embodiment of the present invention.

FIG. 7 is a flowchart showing the operation of the embodiment of the present invention and the operation of the conventional circulating warm water bath;

FIG. 8 is a schematic diagram of a conventional circulating warm water bath system.

FIG. 9 is a diagram showing the flow of bathtub water during normal circulation of a conventional circulating warm water bath.

FIG. 10 is a diagram showing a conventional circulating warm water bath filtration tank in an antibacterial state.

FIG. 11 is a diagram showing the flow of bathtub water at the time of heating antibacterial circulation of a conventional circulating warm water bath.

FIG. 12 is a diagram showing a flow of bathtub water during backwashing of a conventional circulating warm water bath.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bath tub 2 bath tub water 6 filter cartridge 7 circulating warm water bath main body 14 filtration tank 18 aluminum electrode 19 SUS electrode 20 filter medium 30 ′ control unit (controller) 32 prefilter (hair catcher) 33 flocculant-containing cellulose beads 34 activated carbon 35 thread-wound filter 36 Coagulant 37 Wax (embedding agent) 38 Cellulose

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B01D 35/027 C02F 1/52 Z 4D064 C02F 1/00 1/54 Z 1/52 F24H 1/00 602L 1/54 9 / 00 W F24H 1/00 602 B01D 35/02 J 9/00 F term (reference) 3L024 CC02 DD07 DD23 DD32 DD34 DD45 GG41 HH42 HH48 HH49 3L036 AD32 4D015 BA19 BB08 BB18 CA20 DA04 DA05 DA06 DB33 DC04 EA24 EA35 DB011 EA06 EB01 EB14 EB27 EB31 EB39 FA13 FA14 GC20 4D062 BA19 BB08 BB18 CA20 DA04 DA05 DA06 DB33 DC04 EA24 EA35 4D064 AA11 BF01 BF31 BF39 BF40 DC05

Claims (4)

[Claims] 1. A circulating bath for circulating bath water through a filtration bath having an aluminum electrode to purify the bath water by aluminum electrolysis, wherein a coagulant is introduced into the bath water to improve filtration efficiency. A circulating warm water bath characterized in that the tub is prevented from slime. 2. The circulating warm water bath according to claim 1, wherein the coagulant is disposed in a filter cartridge portion disposed upstream of the filtration tank. 3. The method according to claim 1, wherein the flocculating agent is carried on the cellulose beads with wax and released for a predetermined period to prolong the flocculating period of the turbidity component in the bathtub water. Circulating warm bath as described. 4. The circulating bath according to claim 1, wherein sodium alginate is used as the coagulant.