JP2000317439A - Device for cleaning bathtub water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve a problem of proliferation of bacteria at an inner wall of a bathtub by cleaning harmful substances such as residual chlorine and trihalomethanes present in hot water to be fed to the bathtub with an installation type cleaning device, and feeding the hot water to the bathtub. SOLUTION: An installation plate is across on the upper part of the bathtub 11 at a hot water feed nozzle 12 side in a bath room, and a bathtub hot water cleaning device 14 is mounted on the upper part of the installation plate. A hot water feed port 3 of the bathtub hot water cleaning device 14 is connected with a hot water feed nozzle 12 of the bathtub 1 with a hot water feed hose 15, and a hot water feed faucet 16 of the hot water feed nozzle 12 is opened and hot water is fed into the bathtub hot water cleaning device 14. The feed hot water is fed to the upper part of an inner container provided inside a main body container 1 through the hot water feed port 3, and here the harmful substances such as chlorine or trihalomethanes are adsorbed or decomposed with coral sand filled in an inside cleaning region of the inner container. Thus, the problem of proliferation of bacteria at the inner wall if the bathtub 11 is dissolved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for purifying hot water in a bathroom, and more particularly to a safe and sanitary method for removing harmful substances such as chlorine and trihalomethane and preventing bacteria from growing in the bath. The present invention relates to a bath water purifying apparatus which is easy to install and can be manufactured at low cost.

[0002]

2. Description of the Related Art In recent years, a problem caused by chlorine injected into tap water for disinfection has been largely taken up. Chlorine has a number of important roles, including killing pathogens, removing ammonia, iron, manganese, and organics, and clogging filtration devices with plankton and bacteria.

However, on the other hand, chlorine combines with methane to produce trihalomethane. This trihalomethane is a harmful substance that the IARC (International Cancer Institute) has determined to be suspected of carcinogenicity. In addition, the trihalomethane has a property of being easily soluble in fats of the human body, and may be reliably accumulated in the body even in a small amount.

[0004] For this reason, various purifying apparatuses for drinking water have been developed. However, the problems caused by these harmful substances such as chlorine and trihalomethane are not limited to drinking water.

[0005] In other words, there are problems such as skin damage due to harmful substances such as residual chlorine contained in bath water in the bathroom that comes into direct contact with human skin, and harmful substances are absorbed from the skin into the body. It is also reported that much more is absorbed by baths and showers than in science news (Science News No. 103 / Jannet Larov).

[0006] As described above, the purification of chlorine and trihalomethane in bath water is a very important problem, and the purification developed mainly for removing these harmful substances such as chlorine and trihalomethane. There are few devices.

Conventionally, as a device for purifying hot water in a home bath, the hot water in the bath is circulated by a circulation pump.
A bath water purifying device called a 24-hour bath, which is provided with a purifying device for bath water such as a filtration device and a heating device for maintaining the temperature of the bath water at a set temperature, is provided in the circulation line. is there.

[0008] This purifying device can take a clean bath at any time of the day, without having to clean the bathtub every time bathing, it is very convenient, and requires special installation work. Without notice, it was easy to install, and attracted attention and spread rapidly.

[0009] However, with the announcement at the Japan Society for Environmental Infectious Diseases, the fact that Legionella bacteria were detected at a high rate of 70% or more in a 24-hour bathtub for home use became a serious problem.

As a result, a sterilizing function is provided in the cleaning device. Various sterilization functions have already been developed, including 1) chlorine sterilization, 2) ozone sterilization, 3) UV sterilization, and 4) heat sterilization.

In the case of 1) chlorine sterilization, general bacteria and Escherichia coli can be sterilized, but for Legionella bacteria, the injection of a considerably high concentration of chlorine is required. Also, the problem of trihalomethane is not solved.

Regarding 2) ozone sterilization, the disinfection efficiency is unstable compared to chlorine and does not remain in water.
Continuous sterilization effect cannot be expected. In addition, there is an effect of decomposing trihalomethane.

3) Ultraviolet sterilization has a problem in that the output is reduced due to turbidity of the bathtub, etc., and sterilization is performed only on the ultraviolet irradiation part, and there is no ripple effect and continuity of the sterilization effect.

4) For heat sterilization, at 70 ° C. or higher,
Although effective sterilization can be performed on Legionella bacteria and the like, ordinary bath water facilities are at about 60 ° C. and require a special heating device. Moreover, in actual bathing, if the temperature is not cooled down to about 45 ° C., there is a danger of burns and the bath cannot be used as it is.

[0015] In these 24-hour baths, dirt such as human body dirt and hair are mixed in the bathtub to purify while circulating dirty bath water, thereby preventing the propagation of bacteria and viruses. It is difficult to completely prevent it.

That is, although the bath water itself is purified, the bath water in the bath tub is drained and cleaned to prevent the bacteria from being completely removed.
It is inevitable that a biofilm such as “slimy” is formed on the inner wall of the bathtub or the inner wall of the pipe, and bacteria grow inside the biofilm.

On the other hand, instead of a circulating-type purifying apparatus such as a 24-hour bath, some purifying apparatuses for removing harmful substances such as residual chlorine and trihalomethane in hot water supplied to a bathtub have been proposed. In this case, since the bath water in the bath tub is drained and cleaned after use,
The problem of bacterial propagation in the bathtub is eliminated.

For example, in JP-A-10-18371,
There has been invented a water heater for heating tap water, which is provided with a purification device on the water supply side. In addition, actual opening Hei 6-400
No. 69 proposes a shower hose having a shower head provided with a detachable purifying material.

[0019]

As described above, in a circulation type purifying apparatus such as a 24-hour bath, there is a problem of bacterial propagation, and in order to solve this, a special method such as high-temperature sterilization is used. Equipment is required, and periodic cleaning is required due to biofilm problems.

Even if the bath is replaced every time, the bath is filled with the bath and then used for a certain period of time until the purification is completed, and then the cleaning is performed. The problem of bacteria growth in the plumbing system remains.

In Japanese Patent Application Laid-Open No. 10-108371, since the purifying device is installed on the upstream side of the water heater, chlorine is removed before the tap water reaches the water heater. The problem of bacterial growth in the piping system inside and at the outlet side remains. In addition, special construction for plumbing equipment is required.

In Japanese Utility Model Application Laid-Open No. 6-400069, the purifying material installed in the shower head has a limited capacity, so that the purifying capacity lasts for a short period of time. It is not suitable for hot water supply in the bathtub.

[0023] In the case of spraying and flushing the body directly like a shower, there is no problem of bacterial propagation,
In the case of hot water supply into the bathtub, it is necessary to take measures to prevent bacteria from entering the bathtub in consideration of safety.

The present invention has been made in view of the above-mentioned problems, and has no problem of bacterial propagation in a purification device or a bathtub, and has no harmful effects of bacteria and chlorine or trihalomethane in the bathtub. It is an object of the present invention to provide a bath water purifying apparatus which can prevent contamination of substances, is safe and sanitary, can be manufactured at low cost, and can be easily installed.

[0025]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention does not circulate bath water in a bath tub to purify it but to remove residual chlorine or trihalomethane present in warm water supplied to the bath tub. Such harmful substances are purified by an installation type purification device and supplied to the bathtub.

This eliminates the problem of bacterial propagation on the inner wall of the bathtub. Further, the bath water purifying apparatus uses a double-structured container in which an inner container is provided in a main container, and the inner container is a porous water-permeable container of 1 micron or less. The space between the inner container and the main container is filled with a purifying material.

As a porous water-permeable container, a porous ceramic can be used. Originally, porous porcelain has a low strength, and therefore, many are handled in a lump or spherical form, and used as an adsorption-type purifying material or as a medium for useful bacteria having a purifying ability. The present invention is characterized in that the porous porcelain is formed into a cylindrical container shape, and the inside and outside thereof are filled with a purifying material, and the wall of the porous container is firmly protected by the filled purifying material. And As a purifying material to be used, a natural purifying material is used.

In the purification procedure, hot water from the water heater is supplied to the inner container, and harmful substances such as residual chlorine are adsorbed and removed by the purifying material filled in the inner container. The purifying material may be any purifying material capable of removing residual chlorine and trihalomethane. Further, in addition to the action of adsorbing harmful substances, coral sand or Ryukyu limestone having an effect of adjusting mineral components may be used, and ceramic materials having a far-infrared effect may be used.

[0029] Coral sand is obtained by breaking dead coral skeletons into sand, and is porous, has high adsorption performance, and contains a lot of mineral components in seawater. It is mainly produced in Okinawa Prefecture, and has been used since ancient times as a purification material for rainwater storage tanks.

Ryukyu limestone is also produced in Okinawa Prefecture, and is a porous limestone containing a large amount of fossils such as corals. In Okinawa, it has been used as a purification material since ancient times in water tanks and the like.

For the inner container, a water-permeable container of 1 micron or less is used. As a result, bacteria such as Escherichia coli and Legionella bacteria are several microns in size, so that these bacteria do not pass through the inner wall of the water-permeable container and flow out to the main container side. In addition, bacteria contaminated from the water supply piping system can be removed. As the water-permeable container of 1 micron or less, a container made of porous ceramics can be used.

The porous porcelain is obtained by mixing a material which burns or evaporates during firing to produce an infinite number of pores with a base material and baked. This is an ideal lightweight pottery that has been developed for the purpose of reducing the weight of the pottery, mixing more mixed materials, increasing the pore size of the porous material, and maintaining the strength. Is being actively developed. In recent years, fire-resistant, high-strength hollow fine particles, fly ash balloons, and the like have been used as mixed materials.

In the present invention, the above-mentioned porous porcelain is applied as a purifying material. 2. Description of the Related Art Conventionally, porous ceramics have been used as a purification material for sludge or drinking water. These were made by using a myriad of microporous pores as breeding grounds for useful microorganisms and utilizing them as microbial purifying materials, or as spherical or granular materials that were purified using porous adsorption. .

In the present invention, a pot-shaped ceramic container is used, and the function as a porous filter having a pore diameter capable of removing bacteria is utilized by porous micropores.

Although porous, the strength is reduced.
Since the inner container and the space between the inner container and the main body container are filled with the purifying material, there is no fear of damage to the inner container.

The pore size of the porous material can be adjusted by adjusting the particle size of the mixed material to be mixed with the base material such as clay.

Further, since it is not necessary to intentionally increase the strength of the pottery, firing can be performed at a low firing temperature of about 800 ° C. to 1200 ° C., and there is no need to apply an overcoat for waterproofing. Available in condition.

As the mixed material, sawdust, straw, moon peach,
Dried plant powder made by drying pong, palm, etc.
Coral sand powder, Ryukyu limestone powder, and the like can be used.

These are adjusted to a fine powder of about 1 micron in particle size, mixed with the base material, shaped into a pot, and then fired, whereby the pore diameter is closed and a porous material having a water permeability of 1 micron or less is formed. Pottery is made.

The mixing ratio of the mixed material to the base material is as follows:
Although it depends on the mixed material, it is about 10 to 50%.
If it is 10% or less, the pores after firing will not be continuous, but will be single pores, and the water permeability will be low. If it is 50% or more, the shape becomes small and it is difficult to shape. Preferably,
It is about 20 to 30%.

In the main body container, an outlet for discharging the bath water after the purification treatment is provided at a lower portion of the main body container. When this main body container is a ceramic container, warm water is activated by the far-infrared ray effect, and the bath water has a high heat effect.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION The bath water purifying apparatus according to the present invention is designed so that people with sensitive skin such as atopy take a bath.
Focusing further on the worsening of the symptoms, finding that it can be improved by removing residual chlorine etc. in the bath water, repeated research and trial production, as a result of the porous permeable container and natural purification material Accordingly, the invention of a bath water purifying apparatus which is gentle on skin and effective on sensitive skin, and is small and easy to install has been completed.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an embodiment of a bath water purifying apparatus according to the present invention.

The bath hot water purifying apparatus has a cylindrical main body container 1.
A lid 2 is attached to the upper part of the container, and a hot water supply port 3 is provided at a central portion of the lid 2. The hot water supply port 3 is connected to a hot water supply nozzle provided in the bathroom by a hose or the like, Hot water is supplied into the bath water purification device. Further, the main body container 1 is made of ceramic, and a hot water discharge nozzle 4 is provided on a lower side surface, and is mounted and fixed on a fixing table 5.

FIG. 2 is a vertical sectional view of the bath hot water purifying apparatus according to the present invention, and FIG. 3 is a horizontal sectional view of AA section in FIG.

The bath hot water purifying apparatus has a double structure container, and an inner container 6 is provided inside the main body container 1. The inner container 6 is mounted on an installation table 7 installed at the center of the bottom inside the main body container 1. In addition, the installation table 7
A donut-shaped mesh plate 8 is attached to the upper outer peripheral portion of the horn.

The inner purification section 9 inside the inner container 6 is filled with coral sand, and the outer purification section 10 in the space between the inner container 6 and the main container 1 is made of Ryukyu limestone of which particle size has been adjusted. Is filled.

The coral sand is a unique one produced in Okinawa Prefecture, and is obtained by crushing the skeleton of a coral carcass and adjusting the particle size to about 5 to 10 mm.

The Ryukyu limestone is also produced only in Okinawa Prefecture, is a limestone containing a lot of fossils, and is very porous and contains a lot of minerals.

The above-described coral sand and Ryukyu limestone have long been used in household septic tanks as a purification material for purifying rainwater in the Okinawa region, and have a mineral replenishing effect as well as a water purifying effect.

The inner container 6 is made of porous porcelain. This porous porcelain is made by mixing a material that burns or evaporates at the time of firing the porcelain to generate an infinite number of pores with a base material of the porcelain, and baked. By adjusting and baking, it is a porous pottery having pores of 1 micron or less.

Since the particle size of the mixed material is adjusted to a fine powder, the mixed material can be easily mixed with the clay of the pottery material, and can be produced in the same manner as in the production of ordinary unglazed pottery. Since there is no need to apply an overcoat, there is no need to bake twice, and the baking temperature may be a relatively low temperature of about 800 ° C. to 1200 ° C. For this reason, it can be manufactured sufficiently with a small electric furnace or the like.

As the mixed material, dried plant powders such as straw, moon peach, penguin, and palm can be used. Straw is preferably rice straw or wheat straw. Moon peach and pong use leaves and stems. Palm uses skin and leaves. These plants are sufficiently dried and then pulverized to about 1 micron by a crusher to obtain a mixed material.

Moon peach has a deodorizing effect and an antibacterial effect. In addition, pong has an effect as a medicinal herb. In addition, the palm is a filtering material that has been used in rainwater septic tanks for a long time in the Okinawa prefecture region, and can be used for a long time without any mold. Has antibacterial effect. In fact, the mother of the inventor has lived in this palm water purifier for many years, is healthy, has no wrinkles, and has lived up to 101 years.

In addition, coral sand and Ryukyu limestone are crushed with a crusher.
It can be pulverized to about a micron and used as a mixed material. These have the effect of adjusting the mineral components in addition to the adsorption effect.

FIG. 4 is a schematic diagram showing an example of use of the bath water purifying apparatus according to the present invention. An installation plate 13 is laid over an upper portion of the bathtub 11 in the bathroom on the side of the hot water supply nozzle 12, and a bath water purification device 14 according to the present invention is mounted on the installation plate 13.

The hot water supply port 3 of the bath hot water purification device 14 and the bathtub 11
The hot water supply nozzle 12 is connected to the hot water supply nozzle 12 by a hot water supply hose 15.
Hot water is supplied into the bath water purification device 14.

The supplied hot water is first supplied to the upper part of the inner container 6 through the hot water supply port 3, as shown in FIG.
Here, harmful substances such as chlorine and trihalomethane are adsorbed or decomposed by the coral sand filled in the inner purification section 9 of the inner container 6.

Further, by passing through the container wall of the inner container 6 made of porous porcelain, bacteria (such as Escherichia coli and Legionella bacteria) of about several microns are removed, and the outer purification section 10 on the main container 1 side is removed. Flows out into the packed bed of Ryukyu limestone packed in the sea.

Here, the mineral component is dissolved in the warm water by the Ryukyu limestone. Further, even if the ability to adsorb coral sand in the inner purification section 9 is reduced due to long-term use, harmful substances such as chlorine and trihalomethane are adsorbed by the Ryukyu limestone, so that it is safe.

The warm water that has passed through the purifying material in the outer purifying section 10 finally passes through the mesh plate 8 installed at the lower part of the Ryukyu limestone filling tank, and flows into the lower section 17 in the lower part of the main container 1. Then, it flows into the bathtub 11 through the hot water discharge nozzle 4 provided on the lower side surface of the main body container 1.

The mesh plate 8 is provided so that the particles of Ryukyu limestone in the outer purification area 10 do not flow into the bathtub 11 together with the hot water, and is a mesh having a finer mesh than the particles of Ryukyu limestone.

In the present embodiment, the hot water discharge nozzle 4 is provided on the side surface.
Alternatively, a nozzle hole may be formed in the bathtub 3 so as to flow into the bathtub 11 through the nozzle hole. In addition, when the end of the bathtub 11 has a certain space, the bathwater purifying apparatus main body can be directly used without using the installation plate 13 and used as it is.

The fixing base 5 may be provided with a resin projection, a resin ring, or the like on its bottom surface, and may be subjected to a non-slip treatment.

The use period of the bath water purifying apparatus is set by the adsorbing ability of the purifying material in the inner container and the filtering ability of the inner wall.

In this embodiment, the filling amount of the purifying material (coral sand) in the inner purifying section 9 is 10 liters, and the outer purifying section 1 is filled.
The filling amount of zero purification material (Ryukyu limestone) was set to 7 liters. As the mixed material of the porous pottery used for the inner container 6, a dry powder of rice straw whose particle size was adjusted to 1 micron or less was mixed with pottery clay by 20% and fired at 1000 ° C.

The main container 1 was made of a ceramic having a far-infrared ray effect fired at 1300 ° C. Far-infrared rays are electromagnetic waves having a wavelength of 2.5 to 100 microns, which are absorbed by water, improve water quality, suppress the generation of common bacteria, and improve the effect of preventing decay of water and mellow taste. And far-infrared ceramics and ceramics are commercially available as water purification materials.

The bath water purifying apparatus 14 having the above configuration was installed in a bathroom, and 200 l of water was purified every day. The chlorine odor was completely eliminated, and the skin became clearly moist and softer than tap water. No clogging occurred even after 6 months of use.

The purifying material in the internal purifying section 9 was not coral sand, but activated carbon, which is frequently used as a purifying material for drinking water, was used by filling the same volume. In this case, about 3
It became clogged in about a month and became unusable. The inner container 6 was taken out, and the inside was examined. "Slime" was generated on the surface of the activated carbon, and bacteria were generated using the activated carbon as a double layer, giving off a bad smell. In addition, "slime" was also found on the inner wall surface of the inner container 6, which caused clogging.

On the other hand, when the purifying material in the internal purifying area 9 is coral sand, no "slimming" is observed on the surface of the coral sand or the inner wall surface of the inner container 6 even after 6 months, and the odor is not generated. No bacterial outbreaks were observed.

Ryukyu limestone was used in place of coral sand as a purification material in the inner purification section 9. After six months, as in the case of coral sand, there was no "sliminess" and no odor.

As a mixed material of the inner container 6 made of porous porcelain, dried fine powder of moon peach, pong, and palm was used. In the case of moon peach, in addition to having an antibacterial effect, the fragrance of moon peach was transferred to the bath, and the scent of moon peach could be enjoyed in the bath. Even in the case of a pong, the peculiar fragrance remains and a medicinal herb effect can be expected.
In the case of palm, there was no special scent. In each case, there was no problem such as "slimming" in use for 6 months.

Further, fine powder of coral sand and Ryukyu limestone was used as a mixed material for the porous porcelain. Since these fine powders are porous inorganic materials, they do not vaporize and burn by firing, but are sintered similarly to clay and have water permeability due to their original porosity. For this reason,
There is little expansion due to combustion or the like during firing, and the porosity becomes considerably dense. There was no problem such as "slimming" in use for 6 months.

In the production of the porous porcelain of the bath water purifying apparatus 14, a porous porcelain disk shaped and baked into a disc shape using a dry fine powder of rice straw as a mixed material is horizontally placed in the main container. Then, a septic tank was formed by alternately filling with a layer of coral sand so as to form a three-stage layer, and used similarly. One month after the start of use, it became clogged and could not be used.

This is because, since the porous disk is placed horizontally, fine powder such as crushed coral sand powder directly accumulates and closes the micropores of the porous disk. .

Further, even when the porous disk is formed in a plurality of layers, the first porous disk is clogged first. Many types of porous discs must be manufactured to be 1 micron per inch. Also, when comparing the surface area of the porous surface, the porous disk is less than 1/20 of the surface area of the container-shaped porous pottery, and the processing flow rate is too small.

It is preferable to replace the purifying material and the porous ceramic inner container of the bath water purifying apparatus in six months. It can be used for 6 months or more, but the processing capacity gradually decreases due to the calcium content in the warm water.

As described above, the present hot water purifying apparatus produces a special porous ceramic, but can be manufactured in the same manner as in the ordinary ceramic manufacturing process except that the mixed powder is mixed into the ceramic clay. Further, since a natural purifying material is used as the purifying material, there is no need to perform special processing only by adjusting the particle size. For this reason, the purifying material and the inner container made of porous porcelain, which are consumable parts, can be manufactured at low cost. In addition, it exhibits a reliable purification ability over a long period of six months.

If the skin is sensitive to atopic symptoms, it is advisable to use pure water for the first week without using tap water. During this one week, by using the bath water purifying apparatus according to the present invention, a sufficient mineral component is dissolved in pure water, and a bath water with very good skin can be provided. In recent years, pure water has become commercially available at a relatively low price, and effectively utilizes the elution ability of pure water and the mineral action of the bath water purifying apparatus of the present invention.

[0080]

The present invention described in detail above has the following effects. 1) It is small in size, does not require special installation work for installation, can be easily installed in a bathroom, and can be manufactured at low cost.

2) Since it has a double septic tank structure in which an inner container is provided inside the main body container, the purifying area can be made small and large.

3) Since it is a porous water-permeable container of 1 micron or less, bacteria can be removed and it is safe.

4) In the inner container made of porous porcelain, since the inside and outside of the container wall are filled with a purifying material, there is no fear of breakage due to external impact or the like.

5) Since it is not necessary to particularly increase the strength of the pottery and the firing temperature can be lowered, there is no problem of expansion during firing and there is no need for a high-temperature kiln, and it can be manufactured at low cost.

6) By using dry plant powder such as straw, moon peach, penguin, and palm as a mixed material for forming pores of porous porcelain, no harmful substances are generated at the time of firing, and porous materials can be produced at low cost. Pottery can be manufactured. In addition, the bath water has a unique good aroma, and the herbal effect is also exhibited.

7) By using fine powder of coral sand and Ryukyu limestone as a mixed material for forming pores of porous porcelain, porous porcelain can be manufactured in the same manufacturing process as ordinary porcelain, and inexpensively. . Also, there is no problem of thermal expansion, no deformation during firing, and dense pores are formed.

8) Since coral sand and Ryukyu limestone are used as a purifying material for filling the inner and outer purification areas, harmful substances such as chlorine and trihalomethane can be removed. In addition, it has an effect of adjusting mineral components and is safe because it is a natural purifying material.

As described above, according to the present invention, there is no problem of bacteria growing in the purifying apparatus or the bathtub, and it is possible to prevent bacteria and harmful substances such as chlorine and trihalomethane from being mixed into the bathtub, and furthermore, to control minerals. It is possible to provide a bath water purifying apparatus which can supply a safe and gentle skin bath, can be easily installed, and can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a bath water purifying apparatus according to the present invention.

FIG. 2 is a longitudinal sectional view showing an embodiment of a bath water purifying apparatus according to the present invention.

FIG. 3 is a diagram showing an embodiment of a bath water purifying apparatus according to the present invention, A-
It is an A section horizontal sectional view.

FIG. 4 is a schematic perspective view showing an example of use of a bath water purifying apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body container 2 Lid 3 Hot-water supply port 4 Discharge port 5 Fixed base 6 Inner container 7 Installation base 8 Net plate 9 Inner purification area 10 Outer purification area 11 Bathtub 12 Hot-water supply nozzle (bathroom equipment) 13 Installation plate 14 Bath water purification device 15 Hot water supply hose 16 Hot water tap

[Procedure amendment]

[Submission Date] March 3, 2000 (200.3.3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Detailed description of the invention

[Correction method] Change

[Correction contents]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for purifying hot water in a bathroom, and more particularly to a safe and sanitary method for removing harmful substances such as chlorine and trihalomethane and preventing bacteria from growing in the bath. The present invention relates to a bath water purifying apparatus which is easy to install and can be manufactured at low cost.

[0002]

2. Description of the Related Art In recent years, a problem caused by chlorine injected into tap water for disinfection has been largely taken up. Chlorine has a number of important roles, including killing pathogens, removing ammonia, iron, manganese, and organics, and clogging filtration devices with plankton and bacteria.

However, on the other hand, chlorine combines with methane to produce trihalomethane. This trihalomethane is a harmful substance that the IARC (International Cancer Institute) has determined to be suspected of carcinogenicity. In addition, the trihalomethane has a property of being easily soluble in fats of the human body, and may be reliably accumulated in the body even in a small amount.

[0004] For this reason, various purifying apparatuses for drinking water have been developed. However, the problems caused by these harmful substances such as chlorine and trihalomethane are not limited to drinking water.

[0005] In other words, there are problems such as skin damage due to harmful substances such as residual chlorine contained in bath water in the bathroom that comes into direct contact with human skin, and harmful substances are absorbed from the skin into the body. It is also reported that much more is absorbed by baths and showers than in science news (Science News No. 103 / Jannet Larov).

[0006] As described above, the purification of chlorine and trihalomethane in bath water is a very important problem, and the purification developed mainly for removing these harmful substances such as chlorine and trihalomethane. There are few devices.

Conventionally, as a device for purifying hot water in a home bath, the hot water in the bath is circulated by a circulation pump.
A bath water purifying device called a 24-hour bath, which is provided with a purifying device for bath water such as a filtration device and a heating device for maintaining the temperature of the bath water at a set temperature, is provided in the circulation line. is there.

[0008] This purifying device can take a clean bath at any time of the day, without having to clean the bathtub every time bathing, it is very convenient, and requires special installation work. Without notice, it was easy to install, and attracted attention and spread rapidly.

[0009] However, with the announcement at the Japan Society for Environmental Infectious Diseases, the fact that Legionella bacteria were detected at a high rate of 70% or more in a 24-hour bathtub for home use became a serious problem.

As a result, a sterilizing function is provided in the cleaning device. Various sterilization functions have already been developed, including 1) chlorine sterilization, 2) ozone sterilization, 3) UV sterilization, and 4) heat sterilization.

In the case of 1) chlorine sterilization, general bacteria and Escherichia coli can be sterilized, but for Legionella bacteria, the injection of a considerably high concentration of chlorine is required. Also, the problem of trihalomethane is not solved.

Regarding 2) ozone sterilization, the disinfection efficiency is unstable compared to chlorine and does not remain in water.
Continuous sterilization effect cannot be expected. In addition, there is an effect of decomposing trihalomethane.

3) Ultraviolet sterilization has a problem in that the output is reduced due to turbidity of the bathtub, etc., and sterilization is performed only on the ultraviolet irradiation part, and there is no ripple effect and continuity of the sterilization effect.

4) For heat sterilization, at 70 ° C. or higher,
Although effective sterilization can be performed on Legionella bacteria and the like, ordinary bath water facilities are at about 60 ° C. and require a special heating device. In addition, in actual bathing, if the temperature is not cooled to about 45 ° C., there is a risk of burns, and the bath cannot be used as it is.

[0015] In these 24-hour baths, dirt such as human body dirt and hair are mixed in the bathtub to purify while circulating dirty bath water, thereby preventing the propagation of bacteria and viruses. It is difficult to completely prevent it.

That is, although the bath water itself is purified, the bath water in the bath tub is drained and cleaned to prevent the bacteria from being completely removed.
It is inevitable that a biofilm such as “slimy” is formed on the inner wall of the bathtub or the inner wall of the pipe, and bacteria grow inside the biofilm.

On the other hand, instead of a circulating-type purifying apparatus such as a 24-hour bath, some purifying apparatuses for removing harmful substances such as residual chlorine and trihalomethane in hot water supplied to a bathtub have been proposed. In this case, since the bath water in the bath tub is drained and cleaned after use,
The problem of bacterial propagation in the bathtub is eliminated.

For example, in JP-A-10-18371,
There has been invented a water heater for heating tap water, which is provided with a purification device on the water supply side. In addition, actual opening Hei 6-400
No. 69 proposes a shower hose having a shower head provided with a detachable purifying material.

[0019]

As described above, in a circulation type purifying apparatus such as a 24-hour bath, there is a problem of bacterial propagation, and in order to solve this, a special method such as high-temperature sterilization is used. Equipment is required, and periodic cleaning is required due to biofilm problems.

Even if the bath is replaced every time, the bath is filled with the bath and then used for a certain period of time until the purification is completed, and then the cleaning is performed. The problem of bacteria growth in the plumbing system remains.

In Japanese Patent Application Laid-Open No. 10-108371, since the purifying device is installed on the upstream side of the water heater, chlorine is removed before the tap water reaches the water heater. The problem of bacterial growth in the piping system inside and at the outlet side remains. In addition, special construction for plumbing equipment is required.

In Japanese Utility Model Application Laid-Open No. 6-400069, the purifying material installed in the shower head has a limited capacity, so that the purifying capacity lasts for a short period of time. It is not suitable for hot water supply in the bathtub.

[0023] In the case of spraying and flushing the body directly like a shower, there is no problem of bacterial propagation,
In the case of hot water supply into the bathtub, it is necessary to take measures to prevent bacteria from entering the bathtub in consideration of safety.

The present invention has been made in view of the above-mentioned problems, and has no problem of bacterial propagation in a purification device or a bathtub, and has no harmful effects of bacteria and chlorine or trihalomethane in the bathtub. It is an object of the present invention to provide a bath water purifying apparatus which can prevent contamination of substances, is safe and sanitary, can be manufactured at low cost, and can be easily installed.

[0025]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention does not circulate bath water in a bath tub to purify it but to remove residual chlorine or trihalomethane present in warm water supplied to the bath tub. Such harmful substances are purified by an installation type purification device and supplied to the bathtub.

This eliminates the problem of bacterial propagation on the inner wall of the bathtub. Further, the bath water purifying apparatus uses a double-structured container in which an inner container is provided in a main container, and the inner container is a porous water-permeable container of 1 micron or less. The space between the inner container and the main container is filled with a purifying material.

As a porous water-permeable container, a porous ceramic can be used. Originally, porous porcelain has a low strength, and therefore, many are handled in a lump or spherical form, and used as an adsorption-type purifying material or as a medium for useful bacteria having a purifying ability. The present invention is characterized in that the porous porcelain is formed into a cylindrical container shape, and the inside and outside thereof are filled with a purifying material, and the wall of the porous container is firmly protected by the filled purifying material. And As a purifying material to be used, a natural purifying material is used.

In the purification procedure, hot water from the water heater is supplied to the inner container, and harmful substances such as residual chlorine are adsorbed and removed by the purifying material filled in the inner container. The purifying material may be any purifying material capable of removing residual chlorine and trihalomethane. Further, in addition to the action of adsorbing harmful substances, coral sand or Ryukyu limestone having an effect of adjusting mineral components may be used, and ceramic materials having a far-infrared effect may be used.

[0029] Coral sand is obtained by breaking dead coral skeletons into sand, and is porous, has high adsorption performance, and contains a lot of mineral components in seawater. It is mainly produced in Okinawa Prefecture, and has been used since ancient times as a purification material for rainwater storage tanks.

Ryukyu limestone is also produced in Okinawa Prefecture, and is a porous limestone containing a large amount of fossils such as corals. In Okinawa, it has been used as a purification material since ancient times in water tanks and the like.

For the inner container, a water-permeable container of 1 micron or less is used. As a result, bacteria such as Escherichia coli and Legionella bacteria are several microns in size, so that these bacteria do not pass through the inner wall of the water-permeable container and flow out to the main container side. In addition, bacteria contaminated from the water supply piping system can be removed. As the water-permeable container of 1 micron or less, a container made of porous ceramics can be used.

The porous porcelain is obtained by mixing a material which burns or evaporates during firing to produce an infinite number of pores with a base material and baked. This is an ideal lightweight pottery that has been developed for the purpose of reducing the weight of the pottery, mixing more mixed materials, increasing the pore size of the porous material, and maintaining the strength. Is being actively developed. In recent years, fire-resistant, high-strength hollow fine particles, fly ash balloons, and the like have been used as mixed materials.

In the present invention, the above-mentioned porous porcelain is applied as a purifying material. 2. Description of the Related Art Conventionally, porous ceramics have been used as a purification material for sludge or drinking water. These were made by using a myriad of microporous pores as breeding grounds for useful microorganisms and utilizing them as microbial purifying materials, or as spherical or granular materials that were purified using porous adsorption. .

In the present invention, a pot-shaped ceramic container is used, and the function as a porous filter having a pore diameter capable of removing bacteria is utilized by porous micropores.

Although porous, the strength is reduced.
Since the inner container and the space between the inner container and the main body container are filled with the purifying material, there is no fear of damage to the inner container.

The pore size of the porous material can be adjusted by adjusting the particle size of the mixed material to be mixed with the base material such as clay.

Further, since it is not necessary to intentionally increase the strength of the pottery, firing can be performed at a low firing temperature of about 800 ° C. to 1200 ° C., and there is no need to apply an overcoat for waterproofing. Available in condition.

As the mixed material, sawdust, straw, moon peach,
Dried plant powder made by drying pong, palm, etc.
Coral sand powder, Ryukyu limestone powder, and the like can be used.

These are adjusted to a fine powder of about 1 micron in particle size, mixed with the base material, shaped into a pot, and then fired, whereby the pore diameter is closed and a porous material having a water permeability of 1 micron or less is formed. Pottery is made.

The mixing ratio of the mixed material to the base material is as follows:
Although it depends on the mixed material, it is about 10 to 50%.
If it is 10% or less, the pores after firing will not be continuous, but will be single pores, and the water permeability will be low. If it is 50% or more, the shape becomes small and it is difficult to shape. Preferably,
It is about 20 to 30%.

In the main body container, an outlet for discharging the bath water after the purification treatment is provided at a lower portion of the main body container. When this main body container is a ceramic container, warm water is activated by the far-infrared ray effect, and the bath water has a high heat effect.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION The bath water purifying apparatus according to the present invention is designed so that people with sensitive skin such as atopy take a bath.
Focusing further on the worsening of the symptoms, finding that it can be improved by removing residual chlorine etc. in the bath water, repeated research and trial production, as a result of the porous permeable container and natural purification material Accordingly, the invention of a bath water purifying apparatus which is gentle on skin and effective on sensitive skin, and is small and easy to install has been completed.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an embodiment of a bath water purifying apparatus according to the present invention.

The bath hot water purifying apparatus has a cylindrical main body container 1.
A lid 2 is attached to the upper part of the container, and a hot water supply port 3 is provided at a central portion of the lid 2. The hot water supply port 3 is connected to a hot water supply nozzle provided in the bathroom by a hose or the like, Hot water is supplied into the bath water purification device. Further, the main body container 1 is made of ceramic, and a hot water discharge nozzle 4 is provided on a lower side surface, and is mounted and fixed on a fixing table 5.

FIG. 2 is a vertical sectional view of the bath hot water purifying apparatus according to the present invention, and FIG. 3 is a horizontal sectional view of AA section in FIG.

The bath hot water purifying apparatus has a double structure container, and an inner container 6 is provided inside the main body container 1. The inner container 6 is mounted on an installation table 7 installed at the center of the bottom inside the main body container 1. In addition, the installation table 7
A donut-shaped mesh plate 8 is attached to the upper outer peripheral portion of the horn.

The inner purification section 9 inside the inner container 6 is filled with coral sand, and the outer purification section 10 in the space between the inner container 6 and the main container 1 is made of Ryukyu limestone of which particle size has been adjusted. Is filled.

The coral sand is a unique one produced in Okinawa Prefecture, and is obtained by crushing the skeleton of a coral carcass and adjusting the particle size to about 5 to 10 mm.

The Ryukyu limestone is also produced only in Okinawa Prefecture, is a limestone containing a lot of fossils, and is very porous and contains a lot of minerals.

The above-described coral sand and Ryukyu limestone have long been used in household septic tanks as a purification material for purifying rainwater in the Okinawa region, and have a mineral replenishing effect as well as a water purifying effect.

The inner container 6 is made of porous porcelain. This porous porcelain is made by mixing a material that burns or evaporates at the time of firing the porcelain to generate an infinite number of pores with a base material of the porcelain, and baked. By adjusting and baking, it is a porous pottery having pores of 1 micron or less.

Since the particle size of the mixed material is adjusted to a fine powder, the mixed material can be easily mixed with the clay of the pottery material, and can be produced in the same manner as in the production of ordinary unglazed pottery. Since there is no need to apply an overcoat, there is no need to bake twice, and the baking temperature may be a relatively low temperature of about 800 ° C. to 1200 ° C. For this reason, it can be manufactured sufficiently with a small electric furnace or the like.

As the mixed material, dried plant powders such as straw, moon peach, penguin, and palm can be used. Straw is preferably rice straw or wheat straw. Moon peach and pong use leaves and stems. Palm uses skin and leaves. These plants are sufficiently dried and then pulverized to about 1 micron by a crusher to obtain a mixed material.

Moon peach has a deodorizing effect and an antibacterial effect. In addition, pong has an effect as a medicinal herb. In addition, the palm is a filtering material that has been used in rainwater septic tanks for a long time in the Okinawa prefecture region, and can be used for a long time without any mold. Has antibacterial effect. In fact, the mother of the inventor has lived in this palm water purifier for many years, is healthy, has no wrinkles, and has lived up to 101 years.

In addition, coral sand and Ryukyu limestone are crushed with a crusher.
It can be pulverized to about a micron and used as a mixed material. These have the effect of adjusting the mineral components in addition to the adsorption effect.

FIG. 4 is a schematic diagram showing an example of use of the bath water purifying apparatus according to the present invention. An installation plate 13 is laid over an upper portion of the bathtub 11 in the bathroom on the side of the hot water supply nozzle 12, and a bath water purification device 14 according to the present invention is mounted on the installation plate 13.

The hot water supply port 3 of the bath hot water purification device 14 and the bathtub 11
The hot water supply nozzle 12 is connected to the hot water supply nozzle 12 by a hot water supply hose 15.
Hot water is supplied into the bath water purification device 14.

The supplied hot water is first supplied to the upper part of the inner container 6 through the hot water supply port 3, as shown in FIG.
Here, harmful substances such as chlorine and trihalomethane are adsorbed or decomposed by the coral sand filled in the inner purification section 9 of the inner container 6.

Further, by passing through the container wall of the inner container 6 made of porous porcelain, bacteria (such as Escherichia coli and Legionella bacteria) of about several microns are removed, and the outer purification section 10 on the main container 1 side is removed. Flows out into the packed bed of Ryukyu limestone packed in the sea.

Here, the mineral component is dissolved in the warm water by the Ryukyu limestone. Further, even if the ability to adsorb coral sand in the inner purification section 9 is reduced due to long-term use, harmful substances such as chlorine and trihalomethane are adsorbed by the Ryukyu limestone, so that it is safe.

The warm water that has passed through the purifying material in the outer purifying section 10 finally passes through the mesh plate 8 installed at the lower part of the Ryukyu limestone filling tank, and flows into the lower section 17 in the lower part of the main container 1. Then, it flows into the bathtub 11 through the hot water discharge nozzle 4 provided on the lower side surface of the main body container 1.

The mesh plate 8 is provided so that the particles of Ryukyu limestone in the outer purification area 10 do not flow into the bathtub 11 together with the hot water, and is a mesh having a finer mesh than the particles of Ryukyu limestone.

In the present embodiment, the hot water discharge nozzle 4 is provided on the side surface.
Alternatively, a nozzle hole may be formed in the bathtub 3 so as to flow into the bathtub 11 through the nozzle hole. In addition, when the end of the bathtub 11 has a certain space, the bathwater purifying apparatus main body can be directly used without using the installation plate 13 and used as it is.

The fixing base 5 may be provided with a resin projection, a resin ring, or the like on its bottom surface, and may be subjected to a non-slip treatment.

In addition, in the present embodiment, an example of hot water supply from the hot water supply nozzle 12 in the hot water supply to the hot water purifying apparatus 14 has been described. However, when shower equipment is provided, the hot water is directly supplied from the shower nozzle. Alternatively, hot water may be supplied to the upper part of the inside purification section 9 of the bath water purification device 14.

For example, the shower nozzle is inserted into the upper part of the inner container 6 by providing an insertion opening for a shower nozzle in the lid 2 of the bath water purifying apparatus 14 or by removing the lid 2 and inserting the shower nozzle. Hot water can be supplied from this shower nozzle for use.

The use period of the bath water purifying apparatus is set by the adsorbing ability of the purifying material in the inner container and the filtering ability of the inner container wall.

In this embodiment, the filling amount of the purifying material (coral sand) in the inner purifying section 9 is 10 liters, and the outer purifying section 1 is filled.
The filling amount of zero purification material (Ryukyu limestone) was set to 7 liters. As the mixed material of the porous pottery used for the inner container 6, a dry powder of rice straw whose particle size was adjusted to 1 micron or less was mixed with pottery clay by 20% and fired at 1000 ° C.

The main container 1 was made of a ceramic having a far-infrared ray effect fired at 1300 ° C. Far-infrared rays are electromagnetic waves having a wavelength of 2.5 to 100 microns, which are absorbed by water, improve water quality, suppress the generation of common bacteria, and improve the effect of preventing decay of water and mellow taste. And far-infrared ceramics and ceramics are commercially available as water purification materials.

The bath water purifying apparatus 14 having the above configuration was installed in a bathroom, and 200 l of water was purified every day. No clogging occurred even after 6 months of use.

The purifying material in the internal purifying area 9 was not filled with coral sand but activated carbon, which is frequently used as a purifying material for drinking water, was used by filling the same volume. In this case, about 3
It became clogged in about a month and became unusable. The inner container 6 was taken out, and the inside was examined. "Slime" was generated on the surface of the activated carbon, and bacteria were generated using the activated carbon as a double layer, giving off a bad smell. In addition, "slime" was also found on the inner wall surface of the inner container 6, which caused clogging.

On the other hand, when the purifying material in the internal purifying area 9 is coral sand, no "slimming" is observed on the surface of the coral sand and the inner wall surface of the inner container 6 even after 6 months, and the odor is not generated. No bacterial outbreaks were observed.

Ryukyu limestone was used in place of coral sand as the purifying material in the inner purifying area 9. After six months, as in the case of coral sand, there was no "sliminess" and no odor.

As the mixed material of the inner container 6 made of porous porcelain, dried fine powder of moon peach, pong, and palm was used. In the case of moon peach, in addition to having an antibacterial effect, the fragrance of moon peach was transferred to the bath, and the scent of moon peach could be enjoyed in the bath. Even in the case of a pong, the peculiar fragrance remains and a medicinal herb effect can be expected.
In the case of palm, there was no special scent. In each case, there was no problem such as "slimming" in use for 6 months.

Further, fine powder of coral sand and Ryukyu limestone was used as a mixed material of the porous porcelain. Since these fine powders are porous inorganic materials, they do not vaporize and burn by firing, but are sintered similarly to clay and have water permeability due to their original porosity. For this reason,
There is little expansion due to combustion or the like during firing, and the porosity becomes considerably dense. There was no problem such as "slimming" in use for 6 months.

In the production of the porous porcelain of the bath hot water purifying apparatus 14, a porous porcelain disk which has been shaped into a disk using the dried fine powder of rice straw as a mixed material and fired is horizontally placed in the main container. Then, a septic tank was formed by alternately filling with a layer of coral sand so as to form a three-stage layer, and used similarly. One month after the start of use, it became clogged and could not be used.

This is because, since the porous disk is installed horizontally, fine powder such as crushed coral sand powder directly accumulates and closes the micropores of the porous disk. .

Further, even when the porous disk is formed in a plurality of layers, the first porous disk is clogged first. Many types of porous discs must be manufactured to be 1 micron per inch. Also, when comparing the surface area of the porous surface, the porous disk is less than 1/20 of the surface area of the container-shaped porous pottery, and the processing flow rate is too small.

It is preferable that the purifying material and the porous ceramic inner container of the present bath water purifying apparatus be replaced every six months. It can be used for 6 months or more, but the processing capacity gradually decreases due to the calcium content in the warm water.

As described above, the present hot water purifying apparatus produces a special porous pottery, but can be manufactured in the same manner as a normal pottery manufacturing process except that the mixed powder is mixed into the pottery clay. Further, since a natural purifying material is used as the purifying material, there is no need to perform special processing only by adjusting the particle size. For this reason, the purifying material and the inner container made of porous porcelain, which are consumable parts, can be manufactured at low cost. In addition, it exhibits a reliable purification ability over a long period of six months.

If the skin has sensitive symptoms such as atopy, it is preferable to use pure water for the first week without using tap water. During this one week, by using the bath water purifying apparatus according to the present invention, a sufficient mineral component is dissolved in pure water, and a bath water with very good skin can be provided. In recent years, pure water has become commercially available at a relatively low price, and effectively utilizes the elution ability of pure water and the mineral action of the bath water purifying apparatus of the present invention.

[0082]

The present invention described in detail above has the following effects. 1) It is small in size, does not require special installation work for installation, can be easily installed in a bathroom, and can be manufactured at low cost.

2) Since it has a double septic tank structure in which an inner container is provided inside the main body container, the purifying area can be made small and large.

3) Since it is a porous water-permeable container of 1 micron or less, bacteria can be removed and it is safe.

4) Since the inside of the container wall and the outside of the container are filled with a purifying material, there is no fear of breakage due to an external impact or the like.

5) Since it is not necessary to particularly increase the strength of the pottery and the firing temperature can be lowered, there is no problem of expansion during firing and there is no need for a high-temperature kiln, and it can be manufactured at low cost.

6) By using a dry plant powder such as straw, moon peach, penguin, or palm as a mixed material for forming pores of porous porcelain, no harmful substances are generated at the time of firing, and the porous material can be produced at low cost. Pottery can be manufactured. In addition, the bath water has a unique good aroma, and the herbal effect is also exhibited.

7) By using fine powder of coral sand and Ryukyu limestone as a mixed material for forming pores of porous porcelain, porous porcelain can be manufactured in the same manufacturing process as ordinary porcelain, and inexpensively. . Also, there is no problem of thermal expansion, no deformation during firing, and dense pores are formed.

8) Since coral sand and Ryukyu limestone are used as a purifying material to be filled in the inner purifying area and the outer purifying area, harmful substances such as chlorine and trihalomethane can be removed. In addition, it has an effect of adjusting mineral components and is safe because it is a natural purifying material.

As described above, according to the present invention, there is no problem of bacteria growing in the purification device or the bath tub, and it is possible to prevent bacteria and harmful substances such as chlorine and trihalomethane from being mixed in the bath tub, and furthermore, to control minerals. It is possible to provide a bath water purifying apparatus which can supply a safe and gentle skin bath, can be easily installed, and can be manufactured at low cost.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 39/20 B01D 29/10 510G 530A 35/02 E

Claims (11)

[Claims] 1. An apparatus for purifying hot water for purifying hot water and supplying the purified water to a bathtub, wherein an inner container is provided inside the main container, and an inner purification area inside the inner container and a space between the inner container and the main container. Each of the outer purifying sections is filled with a purifying material, and the inner container is a porous water-permeable container of 1 micron or less,
A hot water purifier comprising a double septic tank structure provided with an inlet for hot water at an upper portion and an outlet for hot water in the main body container. 2. The bath hot water purifying apparatus according to claim 1, wherein the water-permeable inner container is a porous ceramic. 3. The bath hot water purifying apparatus according to claim 2, wherein the porous pottery is baked by mixing a dried plant powder with a base material. 4. The apparatus for purifying bath water according to claim 3, wherein the dried plant powder is dried straw powder. 5. The bath water purifying apparatus according to claim 3, wherein the dried plant powder is dried moon peach powder. 6. The bath hot water purifying apparatus according to claim 3, wherein the dried plant powder is dried pong powder. 7. The apparatus for purifying bath water according to claim 3, wherein the dried plant powder is dried palm powder. 8. The bath hot water purifying apparatus according to claim 2, wherein said porous porcelain is baked by mixing a coral sand powder with a base material. 9. The bath hot water purifying apparatus according to claim 2, wherein the porous porcelain is baked by mixing Ryukyu limestone powder with a base material. 10. The method according to claim 1, wherein coral sand is filled as a purifying material filled in the inner purifying section and the outer purifying section. Bath water purification device. 11. The method according to claim 1, wherein Ryukyu limestone is filled as a purifying material filled in the inner purifying section and the outer purifying section. Bath water purification device.