JPH09253416A - Apparatus for purifying bath water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce purified bath water which is highly purified by a method in which bath water filtered by a porous ceramic filter, after being sterilized, is adsorption-purified, and a storage part for purified bath water for washing the filter is installed in the lower part of an adsorption-purification means. SOLUTION: Usually, bath water in a bathtub 12 is kept clean by doing filtration, sterilization, and adsorption-purification in sequence while bath water being circulated by a pump 26. Besides, during the backwashing of a ceramic filter 36, valves 82, 66, 80 are opened, all the other valves are closed, the pump 26 is driven, the valve 82 is closed when the transfer flow velocity of bath water has become maximum, and simultaneously the valve 98 of a backwashing line 102 and the valve 46 of a drain line 44 are opened. In this way, the purified water in a storage tank 56 is jetted into the through holes of the filter 36 by generating a high speed jet water flow to remove a filtration auxiliary, etc., sticking to the outer wall of the filter 36 to discharge them outside from the drain line 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a bath water purifying apparatus which is suitable for a so-called 24-hour bath.

[0002]

2. Description of the Related Art So-called 24-hour baths have been attracting attention for the purpose of comfortable living in the bath at home and saving water and gas. Various types have been developed and sold. This bath water purification device is usually a pre-filter that roughly filters bath water to remove hair, dust, etc., a filter that highly filters bath water to remove redness and oil, sterilization using ultraviolet rays, ozone, etc. Means, adsorption and purification means for deodorization and removal of organic substances, heater (heater) for keeping bath water at a predetermined temperature, etc. are appropriately combined and constructed, pumping water in the bathtub and purifying it with a purification device. By heating with a heater and returning it to the bath, that is, circulating and purifying and heating the bath water, a clean bath is always realized at a constant temperature.

The filter used in the bath water purifying apparatus is required to have a high level of performance to remove red and oil from the bath water as described above, and a high performance filtration such as a porous ceramic filter or an activated carbon filter is required. Means are usually used, but it should be understood that these filters accumulate impurities that are separated from the bath water with use and gradually diminish their filtration capabilities. Therefore, in the bath water purifying apparatus, it is necessary to regularly clean the filter in order to stably exhibit the predetermined ability. In response to this, many bath water purifying devices having an automatic filter cleaning function are commercially available.

[0004]

Unless the user (service person) manually cleans the filter, such filter cleaning is usually backwashing, that is, in the direction opposite to the steady filtration direction. This is performed by a method of removing impurities deposited on the surface of the filter by flowing water. If backwashing with detergent etc. takes time to remove the residual detergent in the bath water purifier after backwashing, the bath water in the bathtub must be pumped up as the wash water for the filter backwash. Is usually used.

However, it cannot be said that the bath water in the bathtub is necessarily clean, and in such a filter cleaning method, dirty bathwater in the bathtub remains in the path through which the purified bathwater passes. In addition, contaminants in the bathtub adhere to pollute the path through which the purified bathwater passes. Therefore, the unpurified bath water mixes with the purified bath water, and the contaminants also mix and the water quality of the bath water deteriorates. There is a problem that the drop is large.

An object of the present invention is to solve the above-mentioned problems of the prior art, and it is possible to perform a high degree of filtration and obtain a highly purified purified bath water. (EN) Provided is a purifying device capable of highly purifying bath water according to a predetermined capacity of the device even immediately after backwashing and always realizing a clean 24-hour bath. .

[0007]

In order to achieve the above object, the present invention provides a porous ceramic filter for filtering bath water, and a sterilizing means for sterilizing the bath water filtered by the porous ceramic filter. An adsorption purification means for purifying the bath water treated by the sterilization means, a pump for transferring the bath water, a cleaning means for the porous ceramic filter, and the porous ceramic filter located under the adsorption purification means. Provided is a bath water purifying device characterized in that it has a purified bath water storage portion for cleaning.

[0008] Further, a large diameter one is partitioned by cylinders having different radii arranged to enclose a small one,
Has at least three spaces that are liquid-tightly separated from each other,
The pump is arranged in the innermost space, the porous ceramic filter is arranged in a space outside the space in which the pump is arranged, and the adsorption purification is performed in a space outside the space in which the porous ceramic filter is arranged. Preferably, a means and a plurality of said sterilization means are arranged.

Further, the space where the sterilizing means and the adsorbing and purifying means are arranged is separated into two by a weir having an open upper side, and the adsorbing and purifying means and the storage tank are located in one of the separated spaces. In addition, it is preferable that the bath water filtered by the porous ceramic filter flows into the other separated space.

Further, in the bath water purifying apparatus of the present invention, it is preferable that the bath water heating means is further arranged by partitioning a part of a space in which the sterilizing means and the adsorption purifying means are arranged.

Further, the bath water purifying apparatus of the present invention preferably has means for forming a filter aid layer of the porous ceramic filter.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The bath water purifying apparatus of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

The bath water purifying apparatus 1 of the present invention shown in FIG.
0 (hereinafter, referred to as a purifying device 10) is a device for circulating and purifying and heating bath water in the bathtub 12, and basically,
Purification unit 14, heating device 16, and filter aid supply unit 18
And a pipe connecting each part.

As shown in FIG. 1, the purifying section 14 has three spaces which are separated from each other and kept liquid-tight, that is, in FIG.
From the middle left, the pump unit 20, the filtration unit 22, and the sterilization / adsorption unit 24 are provided.

A pump 26 for transferring water in the purifying device 10 is arranged in the pump section 20. An inflow line 28 connected to an outflow port of the bathtub 12 is connected to an inlet (intake port) of the pump 26.
The bath water in the bathtub 12 is pumped up and discharged into the pump section 20. In the middle of the inflow line 28, a prefilter 30 for removing large impurities such as hair and dust, and a valve 32 are arranged. In addition, the pump unit 20 includes
An outflow line 34 for outflowing the bath water discharged from the pump 26 is connected. It should be noted that the pump unit 20 (the same applies to the sterilization / adsorption unit 24 described later) is connected to a discharge means (not shown) for discharging internal water as necessary.

The filter section 22 is a section for highly filtering the bath water using the porous ceramic filter 36. A porous ceramic filter (hereinafter referred to as a ceramic filter) has fine pores three-dimensionally, and has fine particles such as floating metal salts, organic matter such as oil and dirt, impurities, and bacteria such as 0.25 μm. It is possible to filter fine particles up to about 1 μm. Therefore, the purifying device 10 of the present invention using the ceramic filter 36 can purify the bath water at an extremely high level.

In the purification apparatus 10 of the illustrated example, the ceramic filter 36 has a cylindrical shape having a through hole at the center, and the bottom of the through hole is closed by the floor surface (or a predetermined closing member) of the filtering portion 22. It is fixed in the filter unit 22 by. The upper portion of the ceramic filter 36 is closed by the closing member 36a. As will be described in detail later, in the illustrated example, the bath water to be purified is highly filtered by the ceramic filter 36 by flowing through the outer wall surface and passing through the side wall of the ceramic filter 36 so as to reach the through hole. Contaminants such as red and oil are removed.

A weir 38 having an open upper portion is provided in the filtering portion 22.
Is installed, and the inside of the filtration unit 22 is divided into a space in which the ceramic filter 36 is arranged and a space in which the ceramic filter 36 is not arranged. An inflow line 40 connected to the outflow line 34 from the pump unit 20 is connected to the space in which the ceramic filter 36 partitioned by the weir 38 is not arranged, and the water discharged by the pump 26 is filtered in the filtering unit 22. Flow into. A valve 41 is arranged in the inflow line 40. Further, a transfer line 42 is formed so as to connect the inside of the through hole of the ceramic filter 36 and the sterilization / adsorption unit 24 described later. Further, a discharge line 44 for discharging the drainage or the like in the backwash described later is connected to the space where the ceramic filter 36 partitioned by the weir 38 is arranged. This discharge line 44
The valve 46 disposed at is basically closed except when backwashing.

The sterilization / adsorption unit 24 is for sterilizing and adsorbing and purifying the bath water filtered by the ceramic filter 36. As shown in FIG. 1, the sterilization / adsorption unit 2
The space 4 is divided into two spaces by a weir 48 that opens upward. An ultraviolet lamp 50 serving as a source of ultraviolet rays and ozone is provided on the upper surface of the space on the filter section 22 side of both spaces.
The bath water filtered by the ceramic filter 36 is sterilized by ultraviolet rays and ozone while passing through this space. An activated carbon layer 52 as an adsorption purification means is arranged in the other space. Incidentally, as the adsorption purification means, zeolite, silica gel, or a mixture of these or a plurality of them can be preferably used.

In the purification apparatus 10 of the illustrated example, it is not limited to generate ultraviolet rays and ozone by one ultraviolet lamp 50, and ultraviolet rays and ozone are generated by using dedicated ultraviolet lamps respectively. May be. Also,
The ozone generation source is not limited to the ultraviolet lamp, and various known methods can be used. Further, the use of ultraviolet light and ozone as the sterilizing means is not limited, and either one of them may be used as the sterilizing means, or a sterilizing means other than ultraviolet light and ozone may be used.

As described above, the activated carbon layer 52 is arranged in the other space of the sterilization / adsorption unit 24. Activated carbon layer 5
No. 2 adsorbs and removes contaminants and bacteria that could not be filtered by the ceramic filter 36, and organic substances (such as dead bodies of bacteria) generated by sterilization, and deodorizes the bath water to obtain the finally purified bath water. To do. Here, in the purification device 10 of the illustrated example, the space on the side of the activated carbon layer 52 formed by the weir 48 is divided into upper and lower parts by using the filter material 54 through which the water passes but the activated carbon does not pass, and the filter material 54 An adsorption purification means is formed by filling the activated carbon layer 52 on the upper side, and the space below the filter material 54 is filled with the storage tank portion 5.
It is 6.

The ceramic filter 36 will be described in detail later.
The bath water filtered by the above flows into the sterilization / adsorption unit 24 from the space on the side of the ultraviolet lamp 50, passes over the weir 48 and flows into the activated carbon layer 52 from above, passes through, and finally becomes the purified bath water. Then it is returned to the bathtub 12. Therefore, purified water is always stored in the storage tank portion 56 located below the activated carbon layer 52. In the purification device 10 of the present invention, a storage tank portion 56 is formed below the activated carbon layer 52 (that is, adsorption purification means), and the water stored in the storage tank portion 56 is used as cleaning water for cleaning the ceramic filter 36 (backwashing in the illustrated example). As a result, it is possible to prevent the inside of the device from being backwashed, which is possessed by the conventional bath water purifying device, and to purify the bath water to a predetermined state even immediately after the backwashing. It was done. Further, with this configuration, it is possible to store the purified bath water for cleaning without wasting the space in the device.

A transfer line 42 which connects the through hole of the ceramic filter 36 and the inside of the sterilization / adsorption unit 24.
Before connecting to the inside of the sterilization / adsorption unit 24, the line 4
2a and line 42b. This line 42
The line a communicates with the space on the ultraviolet lamp side of the sterilization / adsorption unit 24 via the valve 58, and the line 42b communicates with the storage tank unit 56 via the valves 60 and 62.

A return line 64 for returning the bath water purified by the activated carbon layer 52 to the bath 12 is connected to the storage tank 56. Here, in the middle of the return line 64, the valve 6
6 is arranged, and the heating device 16 is connected to the return line 64 in parallel with the valve 66.

The heating device 16 includes a control valve 6
8, a heat exchanger 70, valves 72 and 74. The control valve 68 branches from the return line 64 on the storage tank 56 side of the valve 66 and the valve 7
2. After passing through the heat exchanger 70 and the valve 74, join the return line 64 on the bathtub 12 side of the valve 66. In the purification device 10 of the illustrated example, the temperature of the bath water returning to the bathtub 12 is measured by the control valve 68, and the heating device 1
By adjusting the amount of water flowing into 6 and the amount of water advancing in the return line 64, the water branched and flowing into the heating device 16 is heated by the heat exchanger 70 and merged into the return line 64 again, so that the purified bath The bath water temperature in the bathtub 12 is maintained at a predetermined temperature by setting the water to a predetermined temperature. In the purifying device of the present invention, the method for heating bath water is not limited to this, and various known water temperature adjusting methods such as a method for adjusting the heating temperature in the heat exchanger to maintain the water temperature at a predetermined temperature can be used. Is.

In the return line 64, the heating device 16
A valve 76 is disposed closer to the bathtub 12 than the bath 12, and a bypass line 78 that connects to the inflow line 28 is connected by branching from between the valve 76 and the heating device 16. A valve 80 is arranged in the bypass line 78. Furthermore, the return line 64 is closer to the storage tank 56 than the heating device 16 and is the line 8 having the valve 82.
At 4 it is connected to the outflow line 34 previously described.

The purification apparatus 10 of the illustrated example has a filter aid supply section 18 as a preferred embodiment. As described above, since the ceramic filter 36 has an extremely fine filtration space (pore), if the bath water is directly filtered to filter the bath water, the fine pore will be blocked, and the processing capacity will be gradually reduced, and it will be extremely large. In this case, the expensive ceramic filter 36 cannot be regenerated. Therefore, a filter aid layer is formed on the outer wall surface of the ceramic filter 36, and the bath water flows into the ceramic filter 36 through the filter aid layer, whereby the ceramic filter 36
This prevents clogging of the ceramic filter itself and improves the cleaning effect by backwashing the ceramic filter 36 described later.

The filter aid supply unit 18 is connected in parallel with the valve 62 to the line 42b of the transfer line 42 described above. The filter aid supply unit 18 includes an auxiliary agent tank 86 and a supply unit 8.
8, a valve 90 and an outlet of the supply unit 88 and a line 42b
The valve 62 has a supply line 92 that connects it to the storage section 56 side, and an extrusion line 96 that has a valve 94 and connects the inlet of the supply section 88 and the valve 62 side of the valve 62 of the line 42b.

The filter aid is filled in the aid tank 86. As the filter aid, various known materials such as powdery filter aids such as diatomaceous earth and lime, fibrous filter aids such as cellulose, pulp fiber, asbestos, and silica gel capable of selectively removing proteins can be used. is there. Further, a fibrous filter aid is formed in the lower layer (formed on the surface of the ceramic filter 36).
It is also possible to use a plurality of filter aids such as a powdery filter aid as an upper layer. The supply unit 88 has a filling space having a predetermined volume according to the amount of the filter aid used for forming the filter aid layer,
As described above, the supply line 92 is provided at the outlet of this filling space.
However, extrusion lines 96 are connected to the inflow ports, respectively. Further, in this filling space, a powder (or gel) pump for transporting / filling the filter aid from the aid tank 86 is arranged. That is, in the filter aid supply unit 18 of the illustrated example, the filter aid is quantitatively cut out from the aid tank 86 by this pump and the filling space.

In the purification apparatus 10 of the illustrated example, bath water is circulated through a predetermined path including the pump section 20, the filtration section 22 and the storage tank section 56, the valve 62 is closed, and the valve 9 is closed.
By opening 0 and 94, the filter aid in the supply part 88 is supplied to this circulation path, and a filter aid layer is formed on the outer wall surface of the ceramic filter 36. The method for forming this filter aid layer will be described in detail later.

As the bath water is purified, the filter residue is accumulated on the surface of the ceramic filter 36 (filter aid layer), and the filtration and purification ability of the ceramic filter 36 is reduced. Therefore, the ceramic filter 36 is regularly
In the purification apparatus 10 of the illustrated example, the cleaning water (in the present invention, the purified bath water in the storage tank portion 56) and air are mixed by backwashing with a ceramic jet ceramic backwash. The filter 36 is washed.

In the purification apparatus 10 of the illustrated example, the outflow line 34 and the transfer line 42 are connected, and a backwash line 102 having a valve 98 and a jet nozzle 100 is arranged. The jet nozzle 100 is a so-called ejector having a nozzle portion where the flow path is sharply narrowed and an air introduction nozzle in this nozzle portion, and the flow velocity of the cleaning liquid introduced from the outflow line 34 by the pump 26 at the nozzle portion is rapidly increased. In addition, air is introduced from the air introduction nozzle by the suction force generated by the change in the velocity and mixed into the cleaning liquid to generate a high-speed jet water flow.
In the apparatus of the illustrated example, this jet water flow is jetted from the transfer line 42 into the through hole of the ceramic filter 36 and passed through the wall surface to the outside of the ceramic filter 36 to filter the filter residue adhering to the outer wall surface. The auxiliary agent layer is removed together, and the ceramic filter 36 is washed.

In the purifying apparatus 10 of the present invention, the method for producing the jet water flow is not limited to the method using the above ejector, and high pressure air is blown into the cleaning liquid that has been made to flow at high speed using a compressor or the like to produce the jet water flow. Various known methods such as a method of performing can be used. Further, the backwash may be performed only with the cleaning liquid without using the jet water stream, but in consideration of the cleaning effect, it is preferable to use the jet water stream. Furthermore, in order to perform a higher degree of cleaning, a shower nozzle for spraying a shower on the outer wall surface of the ceramic filter 36 may be arranged in the filtering unit 22, and backwashing and shower cleaning may be used in combination. Alternatively, the ceramic filter 36 may be washed only by shower washing, but backwashing is also preferably used together. In addition, such cleaning of the ceramic filter 36 is performed according to the operating time and the like.
0 may be performed automatically, or may be performed by the user giving an instruction according to the lighting of a warning lamp or the like or the user's judgment.

The purifying apparatus 10 according to the present invention basically has the above-mentioned structure. The functions of circulating purifying bath water, backwashing the ceramic filter 36, and forming a filter aid layer will be described below. To do.

In the purifying apparatus 10, while circulating the bath water between the bath 12 and the purifying apparatus 10 by the pump 26, the filtration by the ceramic filter 36, the sterilization by the ultraviolet lamp 50, and the adsorption purification by the activated carbon layer 52 are sequentially performed. By doing so, the bath water is purified to keep the bath water in the bathtub 12 clean.

In the purification apparatus 10 of the illustrated example, the valves 32, 41, 58, 66, 72, 74 and 76 are opened during the circulation purification of the bath water (that is, during the normal operation), and other than that. All valves are closed. In this state, the bath water in the bathtub 12 is pumped up by the pump 26, large foreign matters such as hair are filtered out by the prefilter 30, and the pump portion 20 is filled from the inflow line 26. The bath water flowing into the pump unit 20 flows into the space in the filtering unit 22 where the ceramic filter 36 is not arranged via the outflow line 34 and the inflow line 40, overflows the weir 38, and overflows the weir 38.
6 flows into the space in which 6 is arranged and is filled in the filter portion 22, and flows from the outer wall surface (filter aid layer) of the ceramic filter 36, passes through the side wall to reach the through hole, and is thus highly filtered. It

The bath water filtered by the ceramic filter 36 flows from the transfer line 42 communicating with the through hole of the ceramic filter 36 to the ultraviolet lamp 50 side of the sterilization / adsorption unit 24 through the line 42a and sterilized with ultraviolet rays and ozone. While flowing over the weir 48, it flows into the activated carbon layer 52 from the upper part, the remaining impurities are removed by passing, and it is deodorized to be highly purified bath water, which is filled in the storage tank portion 56. And flows into the return line 64. The purified bath water that has flowed into the return line 64 has its water amount flowing into the heating device 16 adjusted by the controller 68 in accordance with the water temperature, and the bath water heated by the heat exchanger 70 and the unheated bath water join together. By doing so, it is turned into bath water having a predetermined temperature, passes through the valve 76, and is returned to the bathtub 12.

On the other hand, when backwashing the ceramic filter, first, the valves 82, 66 and 80 are opened, and the other parts are closed to drive the pump 26. Therefore, the bath water in the system is circulated through a predetermined route of pump 26 → outflow line 34 → line 84 → return line 64 → bypass line 78 → inflow line 28 → pump 26.

When the circulation of the bath water by the pump 26 is maximized, the valve 82 is closed, and at the same time, the valve 98 of the backwash line 102 and the valve 46 of the discharge line 44 are opened. As a result, when the circulation is completed, the purified bath water in the storage tank 56 is supplied to the return line 64, and the pump 26 transfers the inflow line 28 from the bypass line 78 to the backwash line 10.
2, and the jet nozzle 100 forms a high-speed jet water stream as described above. The generated jet water flow is jetted from the transfer line 42 into the through hole of the ceramic filter 36, passes through the side wall, and reaches the outside to remove the filter residue and the filter aid adhering to the outer wall surface of the ceramic filter 36. To do. The filter cake and filter aid removed from the ceramic filter 36, and the cleaning water are discharged from the purification device 10 through the discharge line 44 to be discharged. In the above backwashing, since the purified bath water in the storage tank 56 is used as the washing liquid, there is no contamination due to the backwashing in the conventional device as described above.

In the purifying apparatus 10, the filter aid layer is formed on the surface of the ceramic filter 36 as follows. First, the valves 66, 80, 41, 60 and 62 are opened, all the other valves are closed, and the pump 26 is driven. As a result, the water in the system is stored in the storage tank 56, the return line 64, the bypass line 78, the inflow line 28, the pump 26, the outflow line 34, and the inflow line 40.
→ ceramic filter 36 (filtering section 22) → transfer line 42 → line 42b → reservoir section 56 is circulated through a predetermined path. On the other hand, in the filter aid supply unit 18, the aid layer 86
From the above, the supply unit 88 is filled with a predetermined amount of the filter aid.

While performing the circulation, the valve 62 is closed and the valves 90 and 94 are simultaneously opened. As a result, the bath water returning to the storage tank 56 flows into the supply unit 88 from the extrusion line 96, mixes the filter aid in the supply unit 88, and flows into the line 42b via the supply line 92. That is, the bath water circulates along the above-described circulation path (including the supply part 88) together with the filter aid. Here, in this circulation path,
Since the bath water is circulated from the outer wall surface of the ceramic filter 36 to the through holes as in the case of the circulation purification,
The filter aid mixed in the bath water is the ceramic filter 3
6 is supplemented by the outer wall surface, and a filter aid layer is formed as the circulation proceeds.

FIG. 2 shows a schematic top view of another example of the bath water purifying apparatus of the present invention. In the bath water purifying apparatus 110 shown in FIG. 2, members such as the pump 26 and the ceramic filter 36 are the same as those in the example shown in FIG.
The same members are denoted by the same reference numerals, and the description will be made mainly on different portions. Also in the bath water purifying apparatus 110 shown in FIG. 2, the circulation purification of bath water, the backwashing of the ceramic filter 36 and the formation of the filter aid layer, and the flow of bath water and the washing liquid in each of these operations are as follows. Basically, it is performed in the same manner as the purification device 10. Therefore, also in the bath water purifying apparatus 110 shown in FIG. 2, basically, the pipes that connect the respective parts are arranged similarly to the purifying apparatus 10 shown in FIG.

The bath water purifying apparatus 110 (hereinafter referred to as purifying apparatus 110) shown in FIG. 2 has three cylinders, that is, a cylinder 112 having the maximum diameter and a cylinder 11 enclosed in the cylinder 112.
4 and a cylinder 116 enclosed in a cylinder 114,
By the space that is liquid-tightly partitioned from each other by each cylinder,
A pump unit 1 similar to the purification device 10 shown in FIG.
18, a filtration unit 120 and a sterilization / purification unit 122 are formed. In the illustrated example, as a preferred mode, the cylinders are arranged with their axes aligned.

In the purifying device 110, the cylinder 1 having the smallest diameter
A space in 16 is a pump portion 118, and a pump 26 is arranged at the center of the space. The inflow port of the pump 26 is connected to a bathtub, and the bath water in the bathtub is pumped up to the pump portion 118. Fill.

The space formed by the cylinder 116 and the cylinder 114 is the filter section 120. In the purifying apparatus 110 of the illustrated example, the filtering section 120 is divided into two spaces by a weir 124 whose upper side opens like the purifying apparatus 10, and the outer space is used as the inflow side of the filtered bath water. , A total of eight ceramic filters 36 are arranged at 45 ° intervals in the inner space. The number of the ceramic filters 36 is not limited to this, and
A single ceramic filter having a diameter capable of containing the cylinder 116 may be used.

Further, the cylinder 114 and the cylinder 112 having the maximum diameter are
The space formed by and is the sterilization / purification unit 122. Similar to the purification device 10, the sterilization / purification unit 122 is partitioned by a weir 126 whose upper side is open. In the inner space, a total of seven ultraviolet lamps 50 are arranged at 45 ° intervals, and in the outer space. Form an activated carbon layer 52. Further, similarly to the purification device 10, the activated carbon layer 52
Needless to say, is placed on a filter through which activated carbon does not pass, and a storage tank portion 56 is formed under the filter. The purifying apparatus 110 of the illustrated example has seven ultraviolet lamps 50.
Both ozone generation and ultraviolet sterilization may be performed, or ultraviolet lamps for ozone generation and ultraviolet lamps for ultraviolet sterilization may be alternately arranged. Further, in the purification device 110 of the illustrated example, the heating device 16 is arranged by partitioning a part of the sterilization / purification unit 122 as a preferable mode for downsizing the device.

According to the purifying apparatus 110 shown in FIG. 2, there is no contamination due to backwashing, and a high-performance bath water purifying apparatus in which a large number of ceramic filters and ultraviolet lamps are arranged has a small and simple structure. It is possible to realize a high-quality 24-hour bath even in a small bathroom. Further, by forming the storage tank portion on the outermost side, it is possible to sufficiently secure the cleaning liquid used for backwashing or the like.

Although the bath water purifying apparatus of the present invention has been described in detail above, the present invention is not limited to the above-mentioned examples, and various improvements and modifications can be made without departing from the gist of the present invention. Of course it's good.

[0049]

As described above in detail, according to the bath water purifying apparatus of the present invention, it is a high-performance bath water purifying apparatus using a porous ceramic filter, which is free from contamination due to backwashing. Even immediately after backwashing, the bath water can be highly purified according to the specified capacity of the device and is always clean.
You can realize a 4-hour bath.

[Brief description of drawings]

FIG. 1 is a schematic view of an example of a bath water purification device of the present invention.

FIG. 2 is a schematic top view of another example of the bath water purifying apparatus of the present invention.

[Explanation of symbols]

10,110 (bath water) purification device 12 bathtub 14 purification unit 16 heating device 18 filter aid supply unit 20,118 pump unit 22,120 filtration unit 24,122 sterilization / adsorption unit 26 pump 28,40 inflow line 30 prefilter 32, 41, 46, 58, 60, 62, 66, 72, 7
4,76,80,82,90,94,98 Valve 34 Outflow line 36 Ceramic filter 38,48,124,126 Weir 42 Transfer line 44 Discharge line 50 Ultraviolet lamp 52 Activated carbon layer 54 Filter material 56 Reservoir part 64 Return line 68 Control valve 70 Heat exchanger 78 Bypass line 84 Line 86 Auxiliary tank 88 Supply section 92 Supply line 96 Extrusion line 100 Jet nozzle 102 Backwash line

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location C02F 1/50 520 C02F 1/50 520L 531 531R 540 540A 550 550H 560 560B 560C 560Z 1/78 1 / 78

Claims (5)

[Claims] 1. A porous ceramic filter for filtering bath water, a sterilizing means for sterilizing the bath water filtered by the porous ceramic filter, and an adsorption purification means for purifying the bath water treated by the sterilizing means. A pump for transferring bath water, a cleaning means for the porous ceramic filter, and a purified bath water storage tank for cleaning the porous ceramic filter, which is located below the adsorption cleaning means. Bath water purification device 2. A pump having at least three spaces that are liquid-tightly separated from each other and are separated from each other by cylinders having different radii arranged so as to have a large diameter and a small diameter included therein. Is disposed, the porous ceramic filter is disposed in a space outside the space in which the pump is disposed, and the adsorption purification means and the plurality of sterilization means are disposed in a space outside the space in which the porous ceramic filter is disposed. The bath water purification device according to claim 1, wherein and are arranged. 3. A space in which the sterilization means and the adsorption purification means are arranged is divided into two by a weir having an open upper side, and the adsorption purification means and the storage tank portion are located in one of the separated spaces. The bath water filtered by the porous ceramic filter flows into the other separated space.
Bath water purification device described in. 4. The bath water purifying apparatus according to claim 2 or 3, further comprising a bath water heating means that partitions a part of a space in which the sterilizing means and the adsorption purifying means are arranged. Bath water purification device. 5. The bath water purifying apparatus according to claim 1, further comprising means for forming a filter aid layer of the porous ceramic filter.