JP2001208427A - Hot water supply bath device provided with purifying function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the bad electrolysis caused by an electrode coming out of the liquid level, and also to stabilize the cohesive action by the electrode. SOLUTION: Hydrogen gas which arises and stays when electrolyzed by cohesion means 13 is displaced and discharged from above a filtering means by injecting the hot water supplied from a hot water heating means 14 from the top of the filtering means 12. Hereby, the electrolysis can be performed stably without the electrode comming out of the liquid level, and the purifying performance is secured, too.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification apparatus for purifying bath water for business use or home use.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional filtering apparatus of this type aggregates a suspended substance containing water and aggregates the suspended substance, and filters the enlarged suspended substance. There is a filter provided with a filtration unit and a water temperature control unit, and has a quick and stable filtration performance by filtering and separating a suspended substance contained in water in a short time (for example, Japanese Patent Application Laid-Open No. H8-11773).
No. 7).

In FIG. 1, reference numeral 1 denotes a pump which circulates hot water in a bathtub 2 through a flow path 3. Reference numeral 4 denotes a hydrogen ion concentration adjusting means provided in the flow path 3. Reference numeral 5 denotes an aggregating means for eluting aluminum ions and aggregating suspended substances in water, and is provided in the channel 3. Reference numeral 6 denotes a filtering means for filtering the aggregated suspended substance, and is provided with a filter medium 7 and a filter medium support plate 8 therein. Reference numeral 9 denotes an ultraviolet lamp serving as a sterilizing unit, and reference numeral 10 denotes an electric heater serving as a heating unit.
Reference numeral 11 denotes an arrow indicating the flow of hot water.

In this apparatus, water in a bath 2 kept at a constant temperature by an electric heater 10 is sent by a pump 1 through a flow path 3 and a hydrogen ion concentration adjusting means 4 to a flocculating means 5. At this time, aluminum ions are added in the aggregation means 4, and aluminum hydroxide is generated. Aluminum hydroxide is electrically positively charged, and electrically adsorbs to electrically negatively charged bacteria and suspended substances in hot water, whereby the suspended substance is enlarged. The large-sized suspended substance is supplied to the filter medium 7 filled in the filtration means 6.
And sterilized by the ultraviolet lamp 9 and returned to the bathtub 2.

[0005]

However, in the configuration of the water purifier as described above, hydrogen gas and oxygen gas are generated during the electrolysis of the aggregating means and accumulate in the aggregating means. An electrode for aggregating the suspended substance is built in the aggregating means, and the generated gas may lower the liquid level in the aggregating means and expose the electrode to the gas layer from below the liquid level.

[0006] Electrolysis cannot be performed at the electrode portion coming out of the liquid surface, and the electrolysis area is substantially reduced. When the electrolysis is performed with a constant current, the required electrolysis voltage increases or the power supply voltage of the electrolysis is exceeded. In such a case, there is a problem that the amount of electrolysis of the molten metal decreases and the purification performance due to aggregation decreases. The same can be considered for the case where the aggregating means is incorporated in the filtering means.

[0007]

In order to solve the above-mentioned problems, the present invention provides a circulating means comprising a circulating pump and a circulating path for circulating bath water, and a method for producing a metal hydrate by electrolyzing molten metal. An aggregating means for aggregating suspended substances contained in the bath water, a filtering means provided in the circulation path for physically filtering the agglomerated suspended substances, and pouring the water into the bathtub and keeping the temperature of the bath water through the circulation path. A hot water supply heating means for boiling the water; a coagulation means is provided on an upper inside of the filtration means; and hot water supplied from the hot water supply heating means is injected from an upper part of the filtration means, so that a gas generated at the time of electrolysis is removed above the filtration means. Is replaced and discharged.

According to the above invention, when hot water supplied from the hot water supply heating means is injected from above the filtering means, the gas generated during the electrolysis is pushed out from above the filtering means to the outside through the discharge pipe in the filtering means, The generated gas is replaced with hot water. Therefore, by injecting water according to the amount of electrolysis of the aggregating means, the electrodes are not exposed to the gas layer from the liquid surface, and the electrolysis can be stably continued.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot water supply bath apparatus with a purifying function according to a first aspect of the present invention comprises a circulating means comprising a circulating pump and a circulating path for circulating bath water, and metal hydration by electrolyzing molten metal. Agglomeration means for generating a substance and aggregating suspended matter contained in the bath water, a filtration means provided in a circulation path for physically filtering the agglomerated suspended matter, and passing water in a direction opposite to the filtration direction. It consists of backwashing means for washing the filtration means, and heating and heating means for pouring the water into the bathtub or keeping and boiling the bathwater through the circulation path. By injecting hot water supplied from the means from the upper part of the filtering means, gas generated during electrolysis is replaced and discharged from above the filtering means.

Then, when water is injected from above the filtering means,
The gas generated during the electrolysis is pushed out from the discharge pipe from above the filtering means, and the generated gas is replaced with hot water. Therefore, by injecting water according to the amount of electrolysis of the aggregating means, it is possible to prevent the electrodes from being exposed to the gas layer from the liquid surface, and to stably perform electrolysis, thereby stabilizing the aggregating effect and stabilizing the purification performance. I do.

[0011] A hot water supply bath apparatus with a purifying function according to a second aspect of the present invention degass with water supplied from a hot water supply heating means.

Since the hot water supply heating means is supplied to the filtration means without burning, the amount of water dissolved in the air does not change. In other words, there is no excess air (air precipitation due to a change in saturated vapor pressure) generated when the temperature of the water is increased. Degassing can be performed efficiently. In addition, since the hot water supply heating means is not burned, there is no regulation of the amount of tap water to make the combustion range of the water heater, and it is possible to reduce the flow rate of water supply at the time of degassing as much as possible.
The amount of waste water generated during degassing can also be reduced.

According to a third aspect of the present invention, there is provided a hot water supply bath apparatus having a purifying function, in which the hot water supplied from the hot water supply heating means is degassed when the bath water is kept warm.

[0014] Since the hot water supply heating means is burned and heated to the heat retention temperature and supplied to the filtration means, the water temperature in the filtration means does not decrease. That is, cold water is not sent into the bathtub immediately after the start of the filtering operation after the degassing operation. Therefore, the bather can comfortably take a bath.

In the hot water supply bath apparatus with a purifying function according to a fourth aspect of the present invention, hot water is intermittently supplied from the hot water supply heating means to the filtration means.

Since hot and cold water is intermittently supplied to the filtering means, when hot water supply is stopped, the generated gas moves above the filtering means. In addition, since the hot water is supplied after the movement, the gas generated in the filtering means can be reliably discharged to the outside. In addition, the amount of wastewater used for degassing can be reduced.

According to a fifth aspect of the present invention, in the hot water supply bath apparatus having a purifying function, when the electrolysis time in the aggregating means reaches a predetermined time, the degassing operation of the filtering means is performed.

When the electrolysis time is carried out for a predetermined time, a gas corresponding to the electric time is generated and stays in the upper part of the filtering means, but after a predetermined time, water is automatically injected from above the filtering means. By doing so, the gas generated during the electrolysis is pushed out from the discharge pipe to the outside from above the filtering means. Therefore, the electrode is not exposed to the gas layer from the liquid surface, and the electrolysis is stably continued.

A hot water supply bath with a purifying function according to a sixth aspect of the present invention includes gas detecting means for detecting a generated gas amount by detecting a voltage or a current at the time of electrolysis.

When electrolysis is performed using a constant current circuit, when the electrodes are exposed to the gas layer from below the liquid level, the electrode area usable for electrolysis is reduced, and the electrolysis voltage is increased. . In the case where electrolysis is performed using a constant voltage circuit, when the electrodes are exposed to the gas layer from below the liquid level, the electrode area usable for electrolysis is reduced, and the electrolytic current is reduced. That is, by detecting a change in voltage or current during electrolysis, it is possible to detect a state in which the electrode is exposed to the gas layer from below the liquid level. When it is detected that the electrode is exposed from the liquid surface, a gas releasing operation is performed, and the molten metal dissolution amount is stabilized by immersing reliably.

[0021]

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

(Embodiment 1) FIG. 1 is a schematic structural view of a hot water supply bath apparatus having a purification function according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 9 denotes a circulation pump which is a forced circulation means for circulating water in a bathtub 10, and reference numeral 11 denotes a circulation circuit. Reference numeral 12 denotes a filtering means provided in the circulation circuit 11, which supports a cylindrical casing 12a, a granular filter medium 12b mainly containing alumina, having a specific gravity of 3 to 4, and a granular filter medium 12b. It is composed of a filter bed 12c, an upper lid 12d and a lower lid 12e that connect circulation circuits 11 provided above and below the housing 12a, respectively. Reference numeral 13 denotes an aggregating means for generating a metal hydrate by electrolysis and aggregating a suspended substance contained in bath water, and an anode 13a made of aluminum and a stainless steel provided opposite the anode 13a via a predetermined gap. A negative electrode 13b and a power supply 13 for applying a voltage between the anode 13a and the cathode 13b and supplying a constant current.
c. The aggregating means 13 is a cathode 13b
So that the filter means 12 and the housing 12a form a predetermined gap.
It is provided inside and above. The anode 13a and the cathode 13
b and the housing 12a each have a circular cross section and are provided concentrically.

Numeral 14 is a hot water supply heating means provided in the circulation circuit 11 for keeping warm and reheating the circulating water, pouring the water into the bathtub 10, supplying hot water at the time of back washing of the filtering means 12, and supplying water at the time of air purging. , A burner 14a, a heat exchanger 14b, a pouring solenoid valve 14c, a flow control valve 14d, a check valve 14e, and a hot water supply pipe 14g having a thermistor 14f for detecting a pouring temperature.
It is composed of The hot water supply pipe 14g is connected to the circulation pump 9
Is connected to the circulation circuit 11 on the discharge side.

Reference numeral 15 denotes a circulation two-way valve provided between a position where the hot water supply pipe 14g is connected to the circulation circuit 11 and the discharge side of the circulation pump 9. Reference numerals 16 and 17 denote a water level sensor provided in the circulation circuit 11 between the circulation two-way valve 15 and the bathtub 10 for detecting a bathtub water level, and a thermistor for detecting the temperature of hot water in the bathtub 10. Reference numeral 18 denotes a first flow path switching valve (electrically operated three-way valve), which is provided so as to be connected to the outlet side of the circulation pump 9, the upper side of the filtering means 12, and the bypass pipe 19.

Reference numeral 20 denotes a second flow path switching valve (electrically operated three-way valve), which is connected to the downstream side of the filtration means 12, the entrance side to the bathtub 10, and the bypass pipe 19. The bypass pipe 19 forms a circulating circuit that can switch the first flow path switching valve 18 and the second flow path switching valve 20 to bypass the filtering means 12 and can supply hot water from below the filtering means 12. It has become.

Reference numeral 21 denotes a drain pipe connecting the upper side of the filtration means 12 and the downstream side of the second flow path switching valve 20, and a drain two-way valve 22 is provided. 23 is a circulation pump 9, a first flow path switching valve 18, a second flow path switching valve 20, a circulation two-way valve 1
5, drainage two-way valve 22, flow control valve 14d, solenoid valve 14
c, operation of burner 14a, power supply 13 of aggregating means 13
c, water level sensor 16, thermistor 14f, thermistor 1
The controller controls operations such as filtration, backwashing, hot water filling, hot water, additional heating, heat retention, and air purging.

Next, the operations and actions of the fully automatic bath operation will be described with reference to FIG. When the automatic bath operation is performed in a state where the drain cock of the bathtub 10 is closed, an air purge operation for discharging air from the filtering means 12 and the filtering means 12 are performed.
Are continuously performed.

That is, the circulation two-way valve 15 is closed by the operation instruction of the controller 23 and the first flow path switching valve 18
Is connected to the bypass pipe 19 and the hot water supply heating means 14, the second flow path switching valve 20 is connected to the bypass pipe 19 and the filtering means 12, and the drainage two-way valve 22 is switched from closed to open. .

In this state, the operation of opening the solenoid valve 14c for about one second and closing it for several seconds is performed, and the water that has passed through the hot water supply pipe 14g passes through the bypass pipe 19 and flows from below the filtering means 12 below. Come. The flowing water passes through the filter bed 12c and starts passing through the filter medium layer formed by the granular filter medium 12b, and the water level in the filter means 12 rises stepwise, and the inside of the filter means 12 is filled with water.

In this way, even when the filter medium layer formed of the granular filter medium 12b is in a relatively solid state, the water flows intermittently, and the filter medium layer is impacted several times by the water pressure. The filter media layers are separated.

Even if the particulate filter medium 31b rises temporarily, it will settle down by its own weight as soon as the flow stops. In addition, air remains in the filter medium layer formed by the granular filter medium 12b and in the vicinity of the filter bed 12c, and the flow is intermittent even when rising as bubbles, the bubbles are separated from the particulate filter medium 12b, and only the bubbles are removed. It will rise upward.

Therefore, the particulate filter medium 12b is not discharged from the filter means 12 to the outside. During this operation, the water flowing into the filtration means 12 passes through the drainage two-way valve 22 and is discharged to the outside from the drainage pipe 21.

Thereafter, when the number of opening / closing operations of the solenoid valve reaches a predetermined number, the solenoid valve 14c is opened, the amount of hot water is set to a predetermined value by the flow control valve 14d, and the thermistor 14f and the burner 14
In a, the water temperature is adjusted to about 50 ° C., respectively, and the process proceeds to the backwashing operation of the filtering means 12.

Since the filtration means supplements dirt in the bath water, which becomes nutrients such as bacteria at the same time as bacteria during filtration, the inside of the filtration means is a favorable environment for breeding of bacteria. It is difficult to achieve zero, and bacterial growth may progress while reporting.

Also, the amount of metabolites generated during the process of growing bacteria increases. Therefore, the inside of the filtration unit 12 is washed in advance so that the dirt increased inside the filtration unit 12 is not returned to the bath 10 from below the filtration unit 12. The wastewater used for washing is discharged from the drain pipe 21 to the outside.

When a predetermined time has elapsed for the backwashing operation, the solenoid valve 14c is closed, and the first flow path switching valve 18 is brought into a state in which the bypass pipe 19 and the circulation pump 9 are communicated with each other. In a state where the valve 20 communicates the bypass pipe 19 and the bathtub 10,
The circulation two-way valve 15 is switched to the open state, and the backwash operation ends.

Next, when the backwashing operation is completed, the operation proceeds to a hot water filling operation (including an additional hot water / reheating operation). Controller 2
According to the operation instruction of 3, the circulation two-way valve 15 is changed from the open state to the closed state, and the drainage two-way valve 22 is changed from the open state to the closed state, with the second flow path switching valve 20 communicating the bypass pipe 19 and the bathtub 10. Can be switched. Thereafter, when the solenoid valve 14c is opened, the burner 14a is burned, and the hot water heated by the heat exchanger 14b starts flowing through the hot water supply pipe 14g.

Thereafter, the circulation circuit 11 via the circulation two-way valve 15 and the circulation pump 9, and the circulation circuit 11 via the first passage switching valve 18, the bypass pipe 19 and the second passage switching valve 20.
Are supplied to the bathtub 10 from two directions.

In order to detect the water level and hot water temperature in the bathtub 29, the solenoid valve 14c is closed and the circulation pump 9 is operated to completely discharge the air in the circulation circuit 11 to the bathtub. The circulation pump 9 is stopped, the circulation two-way valve 15 is closed, and the water level sensor 17 checks the water level in the bathtub 10.

After checking the water level, if the water level is below the set water level, the filling operation is performed again. If the water level has been reached, the solenoid valve 14c is opened and the circulating pump 9 is operated.
The temperature of the hot water flowing in the circulation circuit 11 is detected by the thermistor 16 to check the water temperature.

After checking the water temperature, if the water temperature is lower than the set water temperature, the burner 14a is burned while the circulation pump 9 is operated, the heat is received by the heat exchanger 14b, and the water in the bathtub 10 is additionally heated. When the set water temperature is reached, burner 1
The combustion of 4a and the operation of the circulation pump 9 are stopped.

When the filling operation is completed, the filtering operation, the coagulation operation, and the degassing operation are continuously performed. The operation and function of filtration, coagulation, and degassing will be described with reference to FIGS.

In response to an operation instruction from the controller 23, the two-way drainage valve 22 is closed, the first flow-path switching valve 18 communicates the bypass pipe 19 with the hot water supply pipe 14d, and the second flow-path switching valve 20 is turned on. The state is switched to a state in which the lower side of the filtering means 12 is closed. Further power 13c is ON, a constant current is controlled so as flowing between a cathode 13b made of an anode 13a and stainless made of aluminum, the predetermined time t ₁
Electrolyzed. In this case, aluminum is dissolved from the anode 13a and aluminum ions are eluted in water.

This aluminum ion chemically reacts with a hydroxyl group (OH ⁻ ) in the water to be present in the water as an aluminum hydroxide which is electrically positively charged. At this time, hydrogen gas (H ₂ ) is generated from the anode 13 a and accumulates above the filtering means 12.

At the time of this electrolysis operation, the circulation two-way valve 15
Is closed, the water level sensor 17 detects the bathtub water level, the circulation two-way valve 15 is opened, and the circulation pump 9 circulates the bathwater to simultaneously detect the bathtub temperature. If the water level is lower than the set water level and temperature,
Hot water is added.

When the electrolysis time reaches a predetermined time t ₁ ,
Move to degassing operation. In response to an operation instruction from the controller 23, the first flow path switching valve 18 turns the filtering means 12 and the hot water supply pipe 14 on.
The second flow path switching valve 20 is switched to a state in which the lower side of the filtration means 12 is closed, in a state where the d side is communicated,
The opening degree of the flow control valve 14d is adjusted so that the flow required for the degassing operation flows. Thereafter, the drainage two-way valve 22 is opened, and at about the same time, the solenoid valve 14c is turned on for a predetermined time t _2.
Only open, it starts the operation to close a predetermined time t _3.

By performing the degassing operation, the hot water supplied from the hot water supply heating means is poured from above the filtering means,
The gas generated and retained during the electrolysis from above the filtering means is pushed out of the filtering means 12 due to the difference in specific gravity, and the retained gas is replaced with hot water.

The replaced gas is discharged from the drain pipe 21 to the outside. After the loop during this operation for a predetermined time t _4, the filtration unit 12 becomes as filled with hot water again,
A filtering operation is performed.

Next, the operation and operation at the time of filtration will be described. In response to an operation instruction from the controller 23, the drainage two-way valve 22 is closed, the circulation two-way valve 15 is opened, and the first flow path switching valve 18 is connected to the filtration means 12 and the circulation pump 9 side. The path switching valve 20 is switched to a state in which the filtration means 12 and the bathtub 10 are communicated, and the circulation pump 9 is operated.

In this case, electrically negatively charged suspended substances such as dirt and bacteria contained in the bath water flow into the filtering means 12.

Electrolytically positively charged aluminum hydroxide generated by the electrolysis stays in the filtration means 12, and is mixed and stirred in the filtration means 12 by the inflow of the suspended matter, whereby Agglomerated flocs of the neutralized suspended matter are formed.

We have confirmed that the particle size of the aggregated floc is several tens to several hundreds μm.

In this case, the flocculent floc is separated by filtration in the filter medium layer composed of the particulate filter medium 12b having a particle diameter of 0.3 to 0.5 mm filled in the filter means 12. That is, the suspended matter contained in the bath water is removed and returned to the bathtub 10.

[0055] If done this filtration operation for a predetermined time t _5, the flow returns to agglomeration operation.

The degassing operation is controlled so as to automatically shift when electrolysis is performed for a predetermined time t _1. However, if the air is accumulated or the degassing does not go well, the anode degassing operation is stopped. When the electrode 13a and the cathode 13b are exposed to the gas layer from below the liquid level, the usable electrode area decreases, and the power supply 13c
The electrolysis voltage at increases. In this case, the electrolysis is stopped by the gas generation detecting means 23a built in the gas sensor 23, a gas releasing operation is performed, and the gas is surely immersed below the liquid level.

[0057] Further aggregation operation, if passed the total electrolysis time is t _6, as the aggregation behavior does not perform the electrolysis ends, if a predetermined period of time t ₇ elapsed after the hot water filling the end, warm-plus hot water, filtration The operation is controlled to end.

When the power of the hot-water supply bath is turned on and the fully automatic operation is released, the additional heating / additional hot water operation is not performed. Also, since the burner 14a is controlled so as not to burn even when pouring the water into the filtering means 12,
The opening degree of the flow control valve 14d is controlled to be small so that a small amount of water is supplied from the hot water supply heating means as compared to when the burner 14a is burning.

Further, from the upper layer to the middle layer of the filter medium layer formed by the particulate filter medium 12b inside the filter means 12 after the filtration operation, dirt such as flocculated floc is deposited. It is necessary to perform a washing operation.

The backwashing operation is performed for a predetermined time t _{8 after the} completion of filling.
Is controlled so that it is automatically performed when the time elapses. The operation is as described above, and the description is omitted.

As described above, the present embodiment has the following effects.

(1) At the start of the coagulation operation, the level of the bath water is detected and the temperature of the hot water is checked, and the fully automatic operation of reheating and adding hot water is performed, so that the filtration time is increased as much as possible. Therefore, the purification performance is improved.

(2) By performing the backwashing operation prior to filling with hot water, it is possible to prevent the contamination due to bacterial growth in the filtering means accompanying the standing after the backwashing of the filtering means from returning to the bathtub.

(3) When the granular filter medium is composed of alumina having a large specific gravity, the outflow of the granular filter medium can be reduced, and the particle size of the granular filter medium can be made relatively small, so that the filtration performance can be improved. .

(4) By supplying warm water from the hot water supply heating section to the filtration means, the washing efficiency of the filtration means is improved.

[0066]

As is apparent from the above description, the following effects can be obtained according to the present invention.

In the hot water supply bath with a purifying function according to the first aspect of the present invention, the gas generated during the electrolysis can be replaced and discharged by injecting water from above the filtering means, and the electrode is exposed to the gas layer from below the liquid level. Can be prevented. Therefore, the stabilization of the electrolysis ensures the coagulation effect and the purification performance.

In the hot water supply bath apparatus with the purifying function according to the second aspect of the present invention, since the hot water supply heating means is supplied to the filtering means without burning, the amount of water dissolved in the air does not change and the hot water supply means can be used at a high temperature. Surplus air generated in the air can be suppressed. Further, the flow rate of the supplied water at the time of degassing can be set without providing a restriction on the amount of tap water for setting the combustion range of the hot water supply heating means. Therefore, the amount of waste water generated at the time of degassing can be reduced.

Further, in the hot water supply bath apparatus with the purifying function according to claim 3 of the present invention, the hot water heated by the hot water supply heating means is supplied to the filtering means, so that the water temperature in the filtering means does not decrease. Therefore, even if the filtering operation is performed immediately after the degassing operation, the cold water is not circulated in the bath water, and the bather can comfortably take a bath.

Further, in the hot water supply bath apparatus with the purifying function according to claim 4 of the present invention, the hot water is intermittently supplied to the filtering means, so that when the hot water supply is stopped, the generated gas can easily move above the filtering means. Become. Further, since the hot and cold water is supplied after the movement, the gas in the filtering means can be reliably discharged. In addition, the amount of water used for degassing can be reduced.

Further, the hot water bath apparatus with a purifying function according to claim 5 of the present invention is characterized in that water is automatically injected from above the filtering means when the electrolysis operation has passed for a predetermined time, so that the electrolyzing operation is performed from above the filtering means. Can be replaced and discharged. That is, the state in which the electrode is below the liquid level can be maintained, and the aggregation effect by electrolysis can be stabilized.

Further, the hot water bath apparatus with a purifying function according to claim 6 of the present invention can grasp the positional relationship between the electrode and the liquid level by detecting a voltage change during electrolysis. Even if it is exposed to the gas layer from below the liquid level,
By performing the degassing operation, it is possible to reliably immerse the liquid under the liquid level, and it is possible to stabilize the coagulation action by electrolysis.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water supply device with a purification function according to a first embodiment of the present invention.

FIG. 2 is a sequence diagram showing a state from a hot water filling operation to a backwashing operation of the apparatus.

FIG. 3 is a schematic configuration diagram of a conventional water purification device.

[Explanation of symbols]

 Reference Signs List 9 circulation pump 11 circulation circuit 12 filtering means 13 aggregating means 13a anode 13b cathode 13c power supply 14 hot water supply heating means 15 circulation two-way valve 18 first flow path switching valve (electric three-way valve) 19 bypass pipe 20 second flow path switching Valve (Electric three-way valve) 21 Drain pipe 22 Drain two-way valve 23 Controller 23a Gas generation detecting means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/465 B01D 35/02 J F24H 1/14 C02F 1/46 102 9/00 (72) Inventor Miyata Hajime 1006 Kadoma, Kazuma, Kazuma, Osaka Prefecture F-term (reference) in Matsushita Electric Industrial Co., Ltd. BB03 3L036 AD32 4D061 DA07 DB15 EA06 EB01 EB14 EB27 EB28 EB37 FA01 FA03 FA07 FA13 GA12 GA14 4D064 AA11 BF32 BF33 BF34 BF36 BF40

Claims (6)

[Claims] A circulating means comprising a circulating pump and a circulating path for circulating bath water; an aggregating means for forming a metal hydrate by electrolyzing a molten metal and aggregating suspended substances contained in the bath water; , A filtration means for physically filtering the suspended substance, and pouring into the bathtub and warming the bath water via the circulation path.
A hot water supply heating means for boiling water, wherein the aggregating means is provided above the inside of the filtration means, and hot water supplied from the hot water supply heating means is injected from above the filtration means, and a gas generated during electrolysis is formed. Hot water bath apparatus with a purifying function for replacing and discharging water from above the filtering means. 2. A hot-water supply bath apparatus with a purifying function according to claim 1, wherein degassing is performed with water supplied from the hot-water supply heating means. 3. The hot-water supply bath apparatus with a purifying function according to claim 1, wherein the hot-water supply heating means is burned during the bath-water keeping operation, and the hot water supplied from the hot-water supply heating means is degassed. 4. A hot water supply bath with a purifying function according to claim 1, wherein hot water is intermittently supplied from the hot water supply heating means to the filtration means. 5. The hot-water supply bath device with a purifying function according to claim 1, wherein the degassing operation of the filtering means is performed when the electrolysis time in the coagulating means reaches a predetermined time. 6. The hot-water supply bath apparatus with a purifying function according to claim 1, further comprising gas detection means for detecting a generated gas amount by detecting a voltage or a current at the time of electrolysis.