JPH10227521A - Bath water circulating and purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an installing space for a filter device to be reduced and further to facilitate a maintenance work of the filter device in a bath water circulating and purifying device for use in always keeping the bath water in clean state while the bath water in a bath tub is externally circulated and purified. SOLUTION: This bath water circulating device is operated such that bath water in a bath tub 10 externally circulated through a bath water circulating pipe passage 12 is flowed into a filter device 20 connected to the bath water circulating pipe passage 12 and purified, thereby the water is returned back to the bath water circulating pipe passage 12. An this filter device 20, a first filter film 26 having fine hole diameters and a second filter film 28 having relatively large rough hole diameters are stored in a common filter tank 24. Then, a solenoid opening or closing valve 60 is closed to cause bath water to be selectively passed through the first filter film 26 and germs invisible with naked eyes are removed there. In addition, the solenoid opening or closing valve 60 is opened, the bath water is passed through the second filter film 28 and then dusts of relative large size are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water circulating / purifying apparatus for purifying bath water in a bath tub while circulating the bath water to keep the bath water clean.

[Background of the Invention] In recent years, a bathtub device called a 24-hour bath has been widely used. This bathtub device
A bath water circulation purifying device is provided so that the bath water in the bath tub is circulated externally and returned to the bath tub so that the bath water can be bathed at any time throughout the 24 hours.

FIG. 5 shows an example of a bath water circulation purifying apparatus. In the figure, 200
Reference numeral 202 denotes a bathtub, and reference numeral 202 denotes a bathwater circulation line for externally circulating the bathwater in the bathtub 200. The bathwater circulation line 202
A circulating pump 204 and a heater 206 for warming circulating water (bath water) and keeping it warm are provided above.

[0004] A bypass line 208 is connected to the bath water circulation line 202. A filtration device 210 is provided on the bypass line 208, and the filtration device 210
Electromagnetic valves 212 are provided on the upstream side and the downstream side of, respectively.

[0005] A filtration membrane 214 is provided inside the filtration device 210, and dirt is removed and purified by passing bath water through the filtration membrane 214.

[0006] In this bath water circulation purification apparatus, the bathtub 2
The bath water in 00 is taken out to the bath water circulation line 202, circulates and circulates in the same part, and is returned to the bath tub 200 again. At this time, by opening the electromagnetic valve 212 of the bypass pipe 208, a part of the circulating water branches into the bypass pipe 208 and flows into the filtration device 210, and the filtration membrane 214
, After being purified and passed through the bath water circulation line 202 again.
Specifically, the bypass line 20 in the bath water circulation line 202
8 flows downstream from the connection portion 8 and circulates again in the bath water circulation pipeline 202. Thus, the bathtub 200
The bath water in the bath tub is purified while being circulated outside, so that the bath tub 20
Bath water within 0 is always kept clean.

Reference numeral 216 denotes a sterilizing heater for sterilizing bacteria attached to the filtration membrane 214, and 218 denotes a filtration membrane 21.
4 is an air pump for blowing off dirt and dead bacteria adhered to the filter membrane 4 by air blow, and an air vent pipe 220 for releasing air at that time. An electromagnetic valve 212 is provided on the air vent pipe 220, and the electromagnetic valve 212 is opened when air is blown.

[0008] In the case of this bath water circulation purifier, the filtration membrane 21
After the dirt and dead bacteria are removed from the filter 4 by the air blow, by switching the three-way valve 222, the bath water is supplied to the filtration device 210 through the supply line 224, and the water containing the dirt and the like in the filtration device 210 is supplied. Is the discharge line 226
Through the system.

An electromagnetic valve 212 is also provided on the discharge pipe 226, and the electromagnetic valve 212 is opened when water in the filtration device 210 is discharged.

By the way, in the case of the bath water circulating purification apparatus of this embodiment, a fine filtration membrane having a small pore size is used as the filtration membrane 214 so that bacteria and the like in addition to dirt in the bath water can be filtered and removed. This causes the following inconvenience.

That is, the filtration membrane 214 having such a fine structure
In the case of filtering the bath water using the filter, the flow rate of the bath water passing through the filtration membrane 214 is limited, so that there is no particular problem when bathing is not performed for a long time at midnight or the like. In the case where the process is performed continuously, there is a problem that rapid filtration of the bath water cannot be performed and dirt in the bath water cannot be quickly removed.

Therefore, the present inventors use a combination of a coarse and a fine filtration membrane as a filtration membrane, and in a case where bathing is performed continuously, a relatively large dirt or the like is obtained by rapid filtration. A circulating water purifying device has been devised which can remove water and filter invisible bacteria and the like in the bath water at midnight when there is no bather.

FIG. 6 shows an example. This bath water circulation purifying apparatus is configured such that the bypass line 208 is connected to the two branch lines 2.
08A and 208B, each of which is connected to the bath water circulation line 202, and one filtration device 228, 230 on each branch line 208A and 208B.
And a large-diameter filtration membrane 232 in the filtration tank of one filtration device 228 and a small-diameter filtration membrane 21 in the filtration tank of the other filtration device 230.
In the case of this bath water circulation purifying apparatus, the three-way valve 22 provided at the branch of the bypass pipe 208 is provided.
By switching 2 to the side of the filtration device 228, it is possible to purify the bath water through the coarse filtration membrane 232. That is, the bath water can be rapidly filtered.

On the other hand, by switching the three-way valve 222 to the filtration device 230 side, the filtration of the bath water, that is, the removal of bacteria and the like contained in the bath water can be performed by using the fine filtration membrane 214. it can.

However, this device requires two filtration devices 228 and 230 and thus requires a large space.
Since 30 is installed, two sets of filtration tanks, sterilization heaters, air jet nozzles, etc., which are associated with the filtration devices 228 and 230 are required, which inevitably increases the cost, and maintenance such as replacement of the filtration membrane is also required. There is a problem that the filtering operation has to be performed separately for each filtering device, and the maintenance work is troublesome.

[0016]

The bath water circulation purifying apparatus of the present invention has been devised to solve such a problem. Thus, the bath water circulation purifying device of claim 1 is
(A) a bath water circulation pipe for taking out the bath water in the bath tub and circulating the bath water again, and then returning the bath water to the bath tub again; and (b) a circulation pump for externally circulating the bath water through the bath water circulation pipe.
(C) a filtration membrane is housed in a filtration tank, connected to the bath water circulation pipe to allow the bath water to flow into the inside, and the bath water is purified by passing through the filtration membrane; A filtration device that returns to the downstream side of the connection site in the water circulation pipeline, in a bath water circulation purification device, wherein a common filtration tank has a large pore size relatively to the first filtration membrane having a small pore size. A coarse filter membrane is housed together to allow the bath water to pass through one of the two types of filter membranes. It is characterized by comprising switching means capable of switching between a flow passing through one filtration membrane and a flow passing through the second filtration membrane.

The bath water circulation purifying apparatus according to the second aspect is the first aspect of the invention.
In the above, while forming a bag-like body by the first and second filtration membranes themselves or together with other members, the filtering device has a bath which flows into the inside of the bag-like body through the first or second filtration membrane. A pipe for collecting water and returning it to a downstream side of the connection site in the bath water circulation pipe, provided on the pipe;
A valve for switching the flow of the bath water between a flow passing through the first filtration membrane and a flow passing through the second filtration membrane,
The switching means is constituted by the valve.

[0018] The bath water circulation purifying apparatus of claim 3 is claim 2.
In the pipe, a first branch pipe for flowing the bath water that has passed through the first filtration membrane, a second branch pipe for flowing the bath water that has passed the second filtration membrane, And a main conduit for merging and circulating the bath water in the second branch conduit, and blocking or opening the flow of the bath water in the second branch conduit on the second branch conduit. An on-off valve as the switching means is provided.

[0019]

As described above, in the bath water circulation purifying apparatus of the first aspect, both the fine first filtration membrane and the coarse second filtration membrane are accommodated in a common filtration tank. In addition to allowing water to pass through either of the two types, the filtration device is provided with a switching means to change the flow of bath water into a flow passing through the first filtration membrane and a flow passing through the second filtration membrane. In the case of this purifying device, rapid filtration can be performed by filtering the bath water with a coarse second filtration membrane, and the bath water can be filtered with a fine first filtration membrane. By performing filtration in the normal mode, filtration in a normal mode for removing invisible bacteria and the like can be performed.

In addition, in the case of this apparatus, since these two types of filtration membranes are housed together in a common filtration tank, only one filtration apparatus is required, and therefore, it is necessary to provide a filter as compared with the apparatus shown in FIG. In addition to requiring only a small space, a set of various functional components provided in the filtration device, such as a filtration tank and a sterilization heater, is sufficient, and the cost can be reduced.

In addition, in the case of the present apparatus, when performing maintenance work such as replacement of a filtration membrane, only two types of filtration membranes can be replaced at the same time. Good, and the advantage that the work becomes easy is obtained.

According to a second aspect of the present invention, the bag-like body is constituted by the filtration membrane itself or together with the filtration membrane and other members, and the bath water flowing into the inside of the bag-like body through the filtration membrane is subjected to bath water circulation. A pipe that allows the flow of the bath water to flow downstream of the filter device connection part in the pipe, and a valve that switches a flow of the bath water between a flow passing through the first filtration membrane and a flow passing through the second filtration membrane are provided as the switching means. According to this device, it is possible to satisfactorily switch between the filtering action by the coarse second filtration membrane and the filtering action by the fine first filtration membrane, while using a single filtration device. Both normal filtration mode for rapid filtration and removal of bacteria and the like can be performed well.

According to a third aspect of the present invention, there is provided an apparatus wherein a first branch pipe through which the bath water has passed through the first filtration membrane and a second branch pipe through which the bath water has passed through the second filtration membrane. And a common trunk line, and an on-off valve is provided on the second branch line. In the case of this device, the on-off valve is selectively opened by opening the on-off valve. The bath water can be filtered through the coarse second filtration membrane, and the bath water can be selectively filtered through the first fine filtration membrane by closing the on-off valve.

According to the device of the third aspect, the structure of the switching means can be simply and simply constructed, and the filtering action by the first filtration membrane and the filtering action by the second filtration membrane are
Switching can be easily performed only by opening and closing the on-off valve.

Here, when the on-off valve is opened, the filtering of the bath water can be selectively performed through the coarse second filtration membrane because the first filtration membrane and the second filtration membrane are used to filter the bath water. This is because there is a large difference in the passage resistance when water passes through the filtration membrane.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; In FIG. 1, 10 is a bathtub, and 12 is a bathtub 10.
This is a bath water circulation line for externally circulating the bath water inside.
A circulation pump 14 and a heater 16 for warming and keeping the bath water warm are provided on the bath water circulation pipe 12.

A bypass pipe 18 is connected to the bath water circulation pipe 12 in parallel with the bathtub 10 (in parallel with the circulation pump 14), and a filtering device 20 is provided on the bypass pipe 18. The bypass pipe 18 is provided with an electromagnetic on-off valve 22 on each of the upstream side and the downstream side of the filtration device 20.

The filtration device 20 accommodates both a first filtration membrane 26 having a small pore size and a second filtration membrane 28 having a relatively large pore size inside a common filtration tank 24, and Water is filtered by passing it through one of these two types of filtration membranes.

The first and second filtration membranes 2 are provided in the filtration tank 24.
Sterilization heater 30 for sterilizing bacteria attached to 6, 28
Is further provided, and the air line 3
An air jet nozzle 36 for jetting the air supplied through 4 into the bath water of the filtration tank 24 is provided.

From the filtration tank 24, the air vent line 3
An electromagnetic on-off valve 22 is provided on the air vent line 38. Further, a discharge line 40 extends from the filtration tank 24, and the electromagnetic on-off valve 22 is provided on the discharge line 40.

A three-way valve 42 is provided on the bath water circulation line 12 at an upstream side of a branching portion of the bath water to the bypass line 18.
Is provided. A supply pipe 44 for supplying bath water into the filtration tank 24 extends from the three-way valve 42, and the tip thereof is connected to the filtration tank 24.

FIG. 2 shows the inside of the filtration tank 24 in this embodiment. In FIG. 2, reference numeral 46 denotes a first filtration membrane unit, and 48 denotes a second filtration membrane unit. The first filtration membrane unit 46 is made up of a plurality of first filtration membranes 26 having small pores and fine eyes, and a second filtration membrane unit 48
Are a plurality of second filtration membranes 2 having a relatively large pore size.
It consists of eight.

Here, the first filtration membrane 26 has a pore size of 0.1 to
The second filter membrane 28 has a fine mesh of 1.0 μm (0.4 μm in this example), and has a coarse mesh with a pore diameter larger than 1 μm.

Each of the first filtration membrane 26 and the second filtration membrane 28 has a bag-like shape as a whole,
4 are arranged in parallel with each other in a state of communicating with the inside (pipe) and in a state of being immersed in the bath water in the filtration tank 24.

The tube 54 collects and circulates the bath water that has passed through the first filtration membrane 26 and the second filtration membrane 28, and is located at the boundary between the first filtration membrane unit 46 and the second filtration membrane unit 48. The inside is blocked by a partition 56, and the inside of the pipe 54 passes through the first branch pipe 50 for flowing the bath water passing through the first filtration membrane 26 and the second filtration membrane 28 by the partition 56. Branch pipe line 52 for flowing the bath water
And divided into

The first branch line 50 and the second branch line 52
Join at the downstream part and continue to the main conduit 58. Here, the main line 58 forms a part of the bypass line 18.

The electromagnetic valve 60 is provided on the second branch line 52.
Is provided. The electromagnetic on-off valve 60 is a switching unit that switches between the filtering operation by the first filtration membrane 26 and the filtering operation by the second filtration membrane 28.

That is, when the electromagnetic on-off valve 60 is kept open, the bath water in the filtration tank 24 is selectively supplied to the first filter membrane 26 and the second filter membrane 28 based on the difference in filtration resistance between them. After passing through the two-filtration membrane 28, it flows into the second branch line 52, then flows into the main line 58, and flows into the bath water circulation line 12.

On the other hand, when the electromagnetic on-off valve 60 is closed, the flow of bath water passing through the second filtration membrane 28 is cut off,
As a result, the bath water in the filtration tank 24 passes through the first filtration membrane 26, flows through the first branch pipe 50, and flows into the bath water circulation pipe 12 through the main pipe 58.

That is, according to the present embodiment, the filtration operation by the first filtration membrane 26 and the filtration operation by the second filtration membrane 28 are switched only by switching the electromagnetic on-off valve 60 to either the open state or the closed state. Can be. Incidentally, a suction pump 61 may be provided on the main conduit 58 as necessary as shown by a two-dot chain line in FIGS. 1 and 2.

Next, the purifying action of the bath water by the bath water circulation purifying apparatus of this embodiment will be described. In the bath water circulation purification device of this example, when there is no bather at midnight, the normal mode filtration for removing invisible bacteria and the like is performed, and when there is a bather, rapid mode filtration is performed. In addition, the bath water can be purified by selectively switching each of them.

First, the case of performing the filtration in the normal mode will be described. In this case, the three-way valve 42 is switched in a direction in which the bath water circulates through the bath water circulation line 12. The electromagnetic on-off valve 22 on the upstream side of the filtration device 20 and the electromagnetic on-off valve 22 on the downstream side provided on the bypass line 18 are each opened, and the electromagnetic on-off valve 60 on the second branch line 52 is further opened. Are closed.

In this state, the bath water flowing through the bath water circulation pipe 12 by the operation of the circulation pump 14 passes through the circulation pump 14, the heater 16, and the three-way valve 42,
And a part of the bypass pipe 18
Through the filtration tank 24 of the filtration device 20.

The bath water that has flowed into the filtration tank 24 flows through the fine first filtration membrane 26 because the electromagnetic on-off valve 60 on the second branch pipe 52 is in a closed state. Sometimes invisible bacteria and the like are removed. The bath water that has passed through the first filtration membrane 26 flows to the first branch line 50 side, and is again downstream of the bypass line 18, that is, through the main line 58.
Returned to 2.

Next, the case of performing the filtration in the rapid mode will be described. In this case, the three-way valve 42 and the bypass line 18
The upper electromagnetic on / off valves 22 and 22 are set in the same direction and open state as in the case of performing the filtration in the normal mode, while the electromagnetic on / off valve 60 on the second branch conduit 52 is switched to the open state.

In this state, the bath water that has flowed into the filtration tank 24 is selectively supplied to the filter tank 24 based on the difference in passage resistance between the fine first filtration membrane 26 and the coarse second filtration membrane 28. After flowing through the bifiltration membrane 28, relatively large debris and the like are removed therefrom, and then returned to the bath water circulation line 12 through the second branch line 52 and the main line 58.

In the bath water circulating / purifying apparatus of this embodiment, bacteria, dust and the like adhering to the first and second filtration membranes 26 and 28 can be sterilized and separated and then discharged from the filtration tank 24.

The operation at that time is as follows. That is, first, the bath water in the filtration tank 24 is heated to a high temperature (about 65 ° C.) by the sterilization heater 30, and the first and second filtration membranes 26 and 2 are heated.
Bacteria attached to 8 are sterilized. Subsequently, the air pump 32 is operated to vigorously eject air from the air ejection nozzle 36 into the filtration tank 24 through the air pipe 34, and dead bacteria and garbage, etc., of the bacteria adhered to the first and second filtration membranes 26 and 28. Are separated from the membranes and the membranes are washed. At this time, the electromagnetic on-off valve 22 on the air vent pipe 38 is opened, and the air blown into the tank is released to the outside through the air vent pipe 38.

Next, the three-way valve 42 is switched so that the bath water circulating in the bath water circulation line 12 flows into the filtration tank 24 through the supply line 44 and the electromagnetic on-off valve 22 on the discharge line 40 is opened. By setting the valve state, dead bacteria and garbage of the bacteria are discharged to the outside through the discharge pipe 40 together with the bath water in the filtration tank 24.

As described above, in the bath water circulation purifying apparatus of the present embodiment, the filtration in the normal mode for removing invisible bacteria and the like can be performed by the fine filtration membrane 26, and the coarse filtration filter can be used. Rapid filtration can be performed in the two-filtration membrane 28.

In addition, in the bath water circulation purifying apparatus of this embodiment, since two types of filtration membranes, the first and second filtration membranes 26 and 28, are accommodated in one filtration tank 24, one filtration apparatus 20 is used. And therefore requires less space for installation than the conventional device shown in FIG.
Each functional component provided in the filtration device 20 such as the filtration tank 24 and the sterilization heater 30 may be a single set, and the required cost can be reduced.

Further, in the case of the bath water circulation purifying apparatus of this embodiment, when performing maintenance work such as replacement of the first and second filtration membranes 26 and 28, the first and second filtration membranes 26 and 28 are simultaneously
For example, it is only necessary to perform maintenance work on a single filtration device 20, for example, two types of filters 28 can be replaced, and the maintenance work is easy.

In the bath water circulation purifying apparatus of this embodiment, the bath water is selectively filtered through the first filter membrane 26 having a fine structure by keeping the electromagnetic on-off valve 60 on the second branch pipe line 52 closed. By opening the electromagnetic on-off valve 60, the second filtration membrane 28 having a coarse mesh can be selectively provided.
The bath water can be filtered through.

Therefore, according to the present embodiment, means for switching between the filtering action by the first filtration membrane 26 and the filtering action by the second filtration membrane 28 can be constituted with a simple and simple structure. The filtering operation and the filtering operation by the second filtration membrane 28 can be easily switched only by opening and closing the electromagnetic on-off valve 60.

FIG. 3 shows another embodiment of the present invention. In this embodiment, an electromagnetic on-off valve 60 is provided on the second branch line 52.
Instead of providing a three-way valve 62 at the junction of the first branch line 50 and the second branch line 52, that is, at the junction between the first branch line 50, the second branch line 52 and the main line 58. The three-way valve 62 selectively switches the flow of bath water from the first branch pipe 50 to the main pipe 58 and the flow of bath water from the second branch pipe 52 to the main pipe 58. It is made to switch to.

Also in this example, the filtering action of the bath water by the first filtration membrane 26 and the filtering action of the bath water by the second filtration membrane 28 can be selectively performed. That is, by switching the three-way valve 62 so that the flow of the bath water flows from the first branch line 50 to the main line 58, the normal mode filtration by the first filtration membrane 26 can be selectively performed. By switching the three-way valve 62 so that the flow of the bath water flows from the second branch conduit 52 to the main conduit 58, rapid filtration by the second filtration membrane 28 can be selectively performed.

FIG. 4 shows still another embodiment of the present invention. In this embodiment, a chemical solution tank 64 is provided in the filtration device 20 so that a chemical solution is injected into the filtration tank 24 for sterilization and purification. ing. Here, from the chemical solution tank 64, the filtration tank 24
An injection pipe 66 for a chemical solution extends inside, and the electromagnetic on-off valve 22 is provided on the injection pipe 66. Then, the electromagnetic on-off valve 22 is opened to inject a chemical solution into the filtration tank 24 to sterilize bacteria adhering to the first and second filtration membranes 26 and 28.

Although the embodiments of the present invention have been described in detail above, these are merely examples. For example, in the case of the above-mentioned embodiment, a bypass line 18 is provided in the bath water circulation line 12 so that the filtration device 20 Although the present invention is arranged in parallel with the bathtub 10, the present invention has variously changed within a range not departing from the gist of the present invention. For example, it is also possible to provide the filtering device 20 in series on the bath water circulation line 12. Configurable in form.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a bath water circulation purifying apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing a structure of a main part in the bath water circulation purifying apparatus of FIG. 1;

FIG. 3 is a diagram showing a main part of another embodiment of the present invention.

FIG. 4 is a diagram showing still another embodiment of the present invention.

FIG. 5 is a diagram showing an example of what is considered as a bath water circulation purification device.

FIG. 6 is a view showing an example of a bath water circulation purifying apparatus according to the prior application of the present application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bathtub 12 Bath water circulation pipe 14 Circulation pump 20 Filtration device 24 Filtration tank 26 First filtration membrane 28 Second filtration membrane 50 First branch pipe 52 Second branch pipe 54 Pipe 58 Main pipe 60 Electromagnetic on-off valve ( Switching means) 62 Three-way valve

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI F24H 9/00 B01D 35/02 J (72) Inventor Tatsuro 5-1, Koiehonmachi, Tokoname-shi, Aichi Pref.

Claims (3)

[Claims] 1. A bath water circulation pipe for taking out bath water in a bath tub, circulating the bath water outside, and returning the bath water to the bath tub again.
(B) a circulation pump for externally circulating the bath water through the bath water circulation line; and (c) a filtration membrane housed in a filtration tank, connected to the bath water circulation line to allow the bath water to flow into the inside. In addition,
A filtration device that purifies the bath water by passing through the filtration membrane and then returns the bath water downstream of the connection site in the bath water circulation line. A small-mesh first filtration membrane and a relatively large-pore-size second filtration membrane are accommodated together, and the bath water is passed through one of the two types of filtration membranes. A bath characterized in that the filtering device is provided with switching means for switching a flow of the bath water between a flow passing through the first filtration membrane and a flow passing through the second filtration membrane. Water circulation purification device. 2. The bag according to claim 1, wherein the first and second filtration membranes themselves or together with other members form a bag-like body, while the filtration device passes the first or second filtration membrane through the first or second filtration membrane. A pipe for collecting the bath water flowing into the interior of the body and returning the collected water to a downstream side of the connection portion in the bath water circulation pipe; and a pipe provided on the pipe, and configured to flow the bath water through the first filtration membrane. And a valve for switching between a flow passing through the first filtration membrane and a flow passing through the second filtration membrane, and the switching means is constituted by the valve. 3. The line according to claim 2, wherein the conduit is a first branch conduit for flowing the bath water passed through the first filtration membrane, and a second branch conduit for flowing the bath water passed through the second filtration membrane. A branch conduit, and a main conduit for merging and circulating the bath water in the first and second branch conduits, and on the second branch conduit, in the second branch conduit. An on-off valve as the switching means for shutting off or opening the flow of bath water is provided.