JPH0639370A - Bath tub water filtering apparatus - Google Patents

Abstract

PURPOSE:To provide a bath tub water filtering apparatus which can capture small substances and water-soluble substances and also suppress propagation of germs. CONSTITUTION:A pump and a filtering apparatus 23 are set in the middle of a circulation route to filter bath tub water and a cylindrical filter 28 made of a hard porous body is built in the filtering apparatus 23. The inside of the filter 28 is filled with activated carbon fibers 29. A positive electrode rod 37 is electrically connected with the activated carbon fibers 29 and a negative electrode rod 38 is connected with the water in the filtering apparatus 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a filter capable of capturing even small substances or water-soluble substances in bath water, and prevents the growth of various bacteria in the filter. The present invention relates to a filtration device.

[0002]

2. Description of the Related Art As a filtering device capable of filtering bath water and backwashing the inside of a filtering device, there is one described in Japanese Utility Model Publication No. 4-10893 shown in FIGS. 4 and 5.
This filtering device is a technique previously filed by the applicant.
In the filtration device, a pump 5 is connected in the middle of a pipe line 4 connected between a suction port 2 and a jet port 3 of a bath 1. Further, a pipe line 8 connecting the inflow port 6 and the outflow port 7 of the pump 5
A filter 9 is connected midway, and three-way valves 12 and 13 are arranged on the inlet 10 side and the outlet 11 side of the filter 9, respectively. Further, the three-way valve 13 on the outflow port 11 side and the outflow port 7 of the pump 5 are connected by a backwash passage 14. Furthermore, a drainage passage 15 for backwashed dirty water is connected to the three-way valve 12 on the inlet 10 side of the filter 9.

In the filtering device according to the prior application having such a configuration, the state of the filtering operation is as shown in FIG. That is, when the switch 16 provided in the bathtub 1 is turned on, the pump 5 is driven via the controller 17. Further, the controller 17 switches the three-way valve 12 so that the outflow port 7 of the pump 5 and the inflow port 10 of the filter 9 are in communication with each other,
The three-way valve 13 is switched so that the outflow port 11 of the filter 9 and the inflow port of the pump 5 are in communication with each other. for that reason,
A part of the hot water in the bathtub 1 is ejected from the ejection port 3 through the suction port 2 and the pump 5. At that time, air is sucked into the nozzle 18 provided in the jet port 3 from the air introduction pipe 19 and mixed, and is jetted into the bathtub 1 together with the circulating water of the hot water. That is, the bubbles are ejected.

On the other hand, part of the hot water in the bathtub 1 is
From the outflow port 7 through the three-way valve 12 into the filter 9, and passes through a granular filter medium 20 made of ceramics such as alumina, activated carbon, and a heavy metal-supporting granular substance, and a porous filtration cylinder 21 such as ceramics. It is filtered by the pump 5
To return to the suction port 6 side. That is, a part of the hot water in the bath 1 is filtered.

In the filtration device according to the applicant's earlier application, the backwash operation is as shown in FIG. In this case, as shown in the figure, the backwash switch 2 provided on the wall surface of the bathroom.
Turn 2 ON. As a result, the pump 5 is driven, and at the same time, the three-way valve 12 allows the inflow port 10 of the filter 9 and the drainage passage 15 to communicate with each other, and the three-way valve 13 causes the outflow port 7 of the pump and the flow of the filter 9 to flow. It comes to communicate with the outlet 11.

Therefore, a part of the hot and cold water sucked from the suction port 2 of the bathtub 1 is jetted from the jet port 3 into the bathtub 1, and the remaining part of the hot water passes through the backwash passage 14 and the filter 9
Will flow into the discharge port 11 side. Then, it flows through the inside of the filter 9 in the direction opposite to that during the filtration operation, and the filtration material 20
The substances adhering to and are washed off and discharged from the drainage passage 15.

[0007]

The stains in bath water include, for example, secretions from the body, stains adhering to the body, components such as soap, shampoo, and cosmetics, and bath agents and dust in the air. A wide variety of things are included. Thus, the filter material of the conventional filtration device is a ceramic such as alumina,
Granular filter material 2 made of activated carbon, granular material supporting heavy metals, etc.
0 and a porous filter tube 21 made of ceramic or the like, which are merely filters. Therefore, there is a drawback that a substance smaller than the pore size of this filter or a water-soluble substance cannot pass through the filter and be trapped. If the pore diameter of the filter is reduced, smaller substances can be captured, but on the contrary, there is a problem that pressure loss in the filter portion increases and clogging easily occurs.

Further, such a filtering device is always provided with the pump 5
There is no problem if the pump is driven to circulate in each pipeline, but the pump is often not driven in some cases. Therefore, the filter 9 is left in a state in which dirt is captured, and various bacteria propagate in the filter 9, and when the filtration operation is performed next time, the propagated bacteria are sent out into the bath 1. Not only can the bathtub 1 be virtually unusable unless it comes back and is contaminated and the hot and cold water in the bathtub 1 is replaced.
There was a problem that it was not good for hygiene.

[0009]

SUMMARY OF THE INVENTION The present invention has been made by improving the above-mentioned problems in view of the above-mentioned problems, and is capable of capturing even small substances and water-soluble substances and suppressing the growth of germs. It is intended to provide a bath water filtering device that can be used.

The first means adopted by the present invention to solve the above-mentioned problems is to install a filter in the middle of the circulation system path for extracting hot water from the bath by the pump and returning it to the bath again. A switching valve is provided on each of the inlet side and the outlet side of the filter, and these switching valves are connected to each other by a backwash passage. In the bathtub water filtration device connected to the drainage passage of
The filter is a bath water filtering device characterized in that a container has a cylindrical filter made of a hard porous body and activated carbon fibers mounted in the cylindrical filter.

The second means adopted by the present invention is to install a filter in the middle of the circulation system path for extracting hot water from the bath by the pump and returning it to the bath again, and the inlet side and outlet side of the filter. And a switching valve respectively, and these switching valves are connected to each other through a backwash passage, and a switch valve on the inlet side of the filter is connected to a drainage passage for waste water from which the filter is backwashed. In the above, the filter comprises a cylindrical filter made of a hard porous material in a container, activated carbon fibers mounted in the cylindrical filter, and a power supply device for applying a voltage to the activated carbon fibers, The power supply device is a bath water filtering device characterized in that a positive electrode is connected to the activated carbon fiber and a negative electrode is connected to the water in the filter.

[0012]

In the first means of the present invention, a cylindrical filter made of a hard porous material is mounted in the filter, and the filter is filled with activated carbon fiber. The hot and cold water in the bathtub that has flowed into the filter is first filtered by the cylindrical filter to remove impurities that are solid components, and then the small impurities and water-soluble substances that have passed through the filter are activated carbon fibers. Is attached and absorbed. In other words, the dirt component that could not be captured by the filter is captured by the activated carbon fiber in the filter to improve the filtration performance. Further, in the second means of the present invention, a positive electrode is connected to the activated carbon fiber and a negative electrode is connected to the water in the filter. When the filtration operation is not performed, a voltage is applied to the activated carbon fiber to control the propagation of various bacteria in the filter.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members. 1 to 3 relate to an embodiment of the present invention. FIG. 1 is a vertical cross-sectional view showing the entire filter 23, FIG. 2 is a system diagram of the entire apparatus showing a filtration operation state, and FIG. It is a system diagram of the whole apparatus which shows a washing operation state. As shown in FIG. 1, the filter 23 is formed by connecting an upper casing 24 and a lower casing 25 with bolts 26, and three types of filtering materials 27, 28, 29 are arranged inside. An inlet 30 is formed on the upper casing 24 side, and an outlet 3 is formed on the lower casing 25.
1 is formed.

The above three kinds of filtration materials 27, 28, 29
In the center, a cylindrical filter 28 formed of ceramic, which is a hard porous body, is arranged, and ceramic beads 27 are filled between the filter 28 and the casings 24, 25. Activated carbon fibers 29 are filled in the cylindrical filter 28. Cylindrical filter 2
8 has a bottom plate 33 having a large number of small holes 32 formed in the bottom, and a lid 34 is covered on the upper side. And the lid 34
The long bolt 35 is screwed into the lower casing 25 through the bottom plate 33, and the nut 36 is attached to the upper end of the long bolt 35 to fix the long bolt 35 to the lower casing 25.

On the other hand, a positive electrode rod 37 for applying a positive voltage to the activated carbon fiber 29 in the cylindrical filter 28 is attached to the lower casing 25 so as to penetrate therethrough, and to the upper casing 24. Is equipped with a negative electrode rod 38 for applying a negative voltage to the water in the filter 23 so as to penetrate therethrough.

By the way, the construction of the electric circuit and the whole flow path of the filtration apparatus of this embodiment is shown in FIGS. 4 and 5, except that the whole equipment can be controlled by the operation panel 39 of the remote control. Since this is the same as the conventional case, the description thereof is omitted here.

Next, the operation mode of the filtration device configured as described above will be described from the case of filtration operation. First, as shown in FIG. 2, the switch of the remote control operation panel 39 is operated to switch the three-way valve 12 so that the outflow port 7 of the pump 5 and the inflow port 30 of the filter 23 communicate with each other, and the three-way valve 1
3 is switched so that the outflow port 31 of the filter 23 and the inflow port 6 of the pump 5 communicate with each other. Then, when the pump 5 is driven in this state, part of the hot water in the bath 1 is sucked into the suction port 2
Is ejected to the ejection port 3 through the pump 5. At that time, the air introduction pipe 19 is connected to the nozzle 18 provided at the jet port 3.
The air is sucked from the air and mixed in, and is jetted into the bathtub 1 together with the circulating water of the hot water, and the bubble operation state is established.

On the other hand, a part of the hot water in the bathtub 1 is
Through the three-way valve 12 into the filter 23. In this filter 23, as shown in FIG. 1, first, relatively large contaminants are captured and filtered by the ceramic beads 27. Then, by passing through a cylindrical filter 28 made of a hard porous material such as ceramic, smaller contaminants are captured and filtered.

However, very fine contaminants and water-soluble dirt pass through the cylindrical filter 28 and flow into the inside thereof. The activated carbon fiber 29 filled in the filter 28 adsorbs and removes the contaminants that have passed through the filter 28 and water-soluble stains that cause white turbidity. Therefore, a very excellent filtering action can be obtained. Hot water passing through the activated carbon fiber is
It flows through the outlet 31 and the three-way valve 13 to the inlet 6 side of the pump 5 and circulates.

The backwash operation state of the filtration apparatus of the embodiment is as shown in FIG. As shown in the figure, in this case, the remote control operation panel 39 is operated to switch the three-way valve 12 so that the inflow port 30 of the filtering device 23 and the drainage passage 15 communicate with each other, and the three-way valve 13 moves the flow of the pump 5. The outlet 7 and the outlet 31 of the filter 23 are switched so as to communicate with each other.
Then, the pump 5 is driven.

As a result, part of the hot and cold water sucked from the suction port 2 of the bathtub 1 is jetted from the jet port 3 into the bathtub 1, and the remaining part of the hot water passes through the backwash passage 14 and the filter. It comes to flow into the outlet 31 side of 23. Then, the contaminants adhering to the cylindrical ceramic filter 28 and the ceramic beads 27, which are hard porous bodies, flow through the filter 23 in the direction opposite to that during the filtration operation, and are washed out and discharged from the drainage passage 15. I have to. In this way, the inside of the filter 23 is backwashed.

However, activated carbon fiber 29, which is one of the filtering materials filled in the cylindrical filter 28, is used.
Since small impurities and water-soluble dirt are removed by adsorption, it is impossible to wash off the adsorbed impurities and water-soluble dirt even in the case of backwashing operation. For this reason, the adsorption function is reduced as the usage period becomes longer, and thus the activated carbon fiber 29 needs to be replaced regularly.

The replacement may be performed by removing the bolts 26, removing the upper casing 24, then loosening the nuts 36 and opening the lid 34, and the ceramic beads 27 arranged on the outermost side may be scattered. There is no. That is, it is possible to replace the activated carbon fibers 29 very easily.

Further, in the filtering device of this embodiment, the pump 5
Is in a non-driving state, a weak voltage is applied between the positive electrode rod 37 and the negative electrode rod 38 in the filter 23 to perform an antibacterial action for killing various bacteria. The program is set so that this operation is automatically performed according to an instruction from the controller 17. When a weak voltage is applied, various bacteria such as Escherichia coli charged to a negative voltage are electrically attracted to the activated carbon fibers connected to the positive electrode rod 37 and are collected. In this state, when a weak voltage of, for example, about 0.7 to 1 v is momentarily applied for one pulse, the coenzyme in the miscellaneous bacteria is oxidized by the voltage and the substance metabolism function of the cell membrane of the miscellaneous bacteria is disturbed and the cells die. Therefore, even when it is reused after being unused for a long time, various bacteria do not propagate in the filter 23, and a part thereof does not spout into the bath 1. .

By the way, the present invention is not limited to the above-mentioned embodiments, but can be appropriately modified. For example, the target bathtub may be a bubble bathtub or a hot water supply system capable of additional cooking. Further, the granular ceramic beads 27 may be glass beads, activated carbon, a heavy metal-supporting granular substance, or the like, and the ceramic cylindrical filter 27 may be another hard porous body.

[0026]

As described above, according to the first aspect of the present invention, the inside of the cylindrical filter made of the hard porous material that performs the filtering action is filled with the activated carbon fiber that performs the adsorption action. It is possible to filter and capture impurities as a solid component with a tubular filter, and then to adsorb and capture very small impurities and water-soluble substances that have passed through the filter with activated carbon fibers. Therefore, it becomes possible to capture the dirt component that could not be captured by the conventional filter material, and it is possible to significantly remove the dirt. Moreover, by mounting the activated carbon fiber in the filter, the replacement work can be performed by simply pulling it out of the filter, which is extremely easy. Further, in the second means of the present invention, a positive electrode is connected to the activated carbon fiber, and a negative electrode is connected to the water in the filter to apply a voltage to the activated carbon fiber when the pump is not driven. By doing so, the substance metabolism function of the miscellaneous bacteria in the filter is destroyed and killed, and the propagation of miscellaneous bacteria in the filter is suppressed. Moreover, such electronic sterilization is programmed so as to be performed automatically when the pump is in a non-driven state, and it is not necessary to use useless electric energy.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an entire filter according to the present invention.

FIG. 2 is an overall system diagram during a filtration operation of the filtration device according to the present invention.

FIG. 3 is an overall system diagram of a filtration device according to the present invention during a backwash operation.

FIG. 4 is an overall system diagram during a filtration operation of a conventional filtration device.

FIG. 5 is an overall system diagram of a conventional filtration device during a backwash operation.

[Explanation of symbols]

1 ... Bathtub 5 ... Pump 6 ... Pump inlet 7 ... Pump outlet 12 ... Three-way valve 13 ... Three-way valve 14 ... Backwash passage 15 ... Drainage passage 17 ... Controller 23 ... Filter 27 ... Ceramic beads 28 ... Hard porous body Tubular filter 29 ... Activated carbon fiber 30 ... Filter inlet 31 ... Filter outlet 37 ... Positive electrode 38 ... Negative electrode

Claims (3)

[Claims] 1. A filter is provided in the middle of a circulation path for extracting hot water from a bath by a pump and returning it to the bath again, and a switching valve is provided at each of an inlet side and an outlet side of the filter. In the bath water filtering device, the switching valves are connected to each other through a backwash passage, and the drain valve for backwashing the filter is connected to the switching valve on the inlet side of the filter. A cylindrical filter made of porous material,
A bath water filtering device comprising: an activated carbon fiber mounted in the tubular filter. 2. A filter is provided in the middle of a circulation path for extracting hot water from the bathtub and returning it to the bathtub by a pump, and switching valves are provided on the inlet side and the outlet side of the filter, respectively. In the bath water filtering device, the switching valves are connected to each other through a backwash passage, and the drain valve for backwashing the filter is connected to the switching valve on the inlet side of the filter. A cylindrical filter made of porous material,
The activated carbon fiber is mounted in the tubular filter, and a power supply device for applying a voltage to the activated carbon fiber. The power supply device has a positive electrode connected to the activated carbon fiber. A bath water filtering device, wherein a negative electrode is connected. 3. The controller, wherein the power supply device deenergizes the activated carbon fibers when the pump in the circulation system is in an operating state and energizes the activated carbon fibers when the pump is in a stopped state. The bathtub water filtering device according to claim 2, further comprising: