JP3155945B2 - Bath water purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bath water purifying apparatus for purifying bath water while circulating the bath water.

[0002]

2. Description of the Related Art Conventionally, there has been known a bath water purifying apparatus which is capable of heating and purifying bath water in a bath tub while circulating the bath water by a circulation pump, a heater and a filtering apparatus, so that the bath water can be taken at any time for 24 hours. (Publication No. 3-57358) And at present, the working hours of each individual vary, and this bath water purifying device is becoming widespread in general households.

[0003]

However, in the above-mentioned bath water purifying apparatus, the bath water is always heated and kept warm by a heater so that the temperature does not decrease during bathing. It's easy, but it doesn't have a function that can notify other people of it. If you feel sick and get sick, you can't notify other people. This is due to the fact that the bathroom is closed and it is hard to hear due to the driving sound of the circulation pump of the bath water purification device. Then, if the consciousness is reduced as it is, the bather may be in a dangerous state. In particular, care should be taken when a weak person such as an elderly person takes a bath. An object of the present invention is to provide a bath water purification device that can solve the above-described problems.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a bath water circulation passage having a bath water inlet port (12) and a bath water jet port (16) at both ends. A circulation pump (14), a filtration device (17) for the purpose of adsorbing and removing human body dirt components in the bath water and a heating device (18) for heating the bath water are provided, and the circulation pump (14), A main body (H) is constituted by a filtration device (17), a heating device (18), and a protective case (25) for accommodating them, and the bath water flowing from the bath water suction port (12) is passed through the filtration device ( 1
After passing through 7), the filtration device discharged from the bath water outlet (16) and the bath water flowing from the bath water inlet (12) are passed through the filtration device (17) by flow passage switching means. The backflow is then made to flow back, and then the backwash flow path discharged from the backwash drain pipe 48, which is a separate flow path from the bath water jet (16), can be selectively switched. From the main body (H), The bath hot water suction pipe (13) for installing the bath hot water inlet (12) in the bath tub (10) and the bath hot water jet (16) are connected to the bath tub (1).
0), and a hot water supply pipe (15) for installation inside the main body (H) is disposed near the front of the main body (H) and is suspended in the axial direction of the main body (H). ) Can be placed on the upper edge (11) of the bathtub (10), and the backwash drain pipe 48 is located at a position away from the bathwater suction pipe (13) and the bathwater pressure feed pipe (15). Derived from the main body (H),
An emergency switch (49) is provided on the front side of the main body (H) on the outlet side of the bath water suction pipe (13) and the bath water pressure feeding pipe (15), and an alarm device is provided outside the bathroom away from the main body (H). (50) is provided so that the alarm device (50) can be driven by operating the emergency switch (49). Since the switch (49) is arranged on the surface which is the shortest distance from the bather in the bathtub (10), the operability is improved, and therefore, the other person (for example, the housewife D in the kitchen) can quickly and reliably operate. ) Can be notified of danger.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bath water purifying apparatus according to the present invention.

[0006]

(Embodiment 1) In this embodiment, a bath water purifying apparatus A according to the present invention is installed on a part of an upper edge 11 of a bathtub 10, as shown in FIG.

First, the basic structure of a bath water purifying apparatus A will be described with reference to FIGS. 1 and 2. A bath hot water suction pipe having one end facing the bath water in a bathtub 10 via a suction port 12 will be described. 13
The other end is connected to the water inlet of the circulation pump 14. In addition, the circulation pump 14 has one end of a bath water pumping pipe 15 connected to the water discharge port thereof.
The other end faces the bathwater in the bathtub 10 via the spout 16.

When the circulating pump 14 is operated, the bath water in the bathtub 10 is sucked by the circulating pump 14 through the suction port 12 and the bath water suction pipe 13, and thereafter, the bath water discharged from the circulating pump 14 is discharged. Is jetted into the bathwater in the bathtub 10 through the hot water supply pipe 15 and the jet port 16, and a main circulation flow path is formed.

Further, as shown in FIG. 1, a physical filtration device 17a made of activated carbon and bacteria are used in the bath hot water supply pipe 15 which forms a part of the main circulation flow path from the upstream side to the downstream side. Biological filtration device 17b capable of biological filtration
And a heating device 18 such as a sheathed heater are mounted in order. Note that the heating device 18 can be provided on the upstream side of the filtration device 17.

On the other hand, the bath water purifying apparatus A is provided with a sterilization bypass flow path arranged in parallel with the above-mentioned main circulation flow path, and a bypass pipe 1 forming the sterilization bypass flow path.
Numeral 9 connects the upstream end and the downstream end to a portion on the bath hot-water supply pipe 15 constituting the main circulation flow path, which is an upstream side and a downstream side of the biological filtration device 17b. The bypass pipe 19 is provided with an ultraviolet sterilizer 20 composed of an ultraviolet light emitting lamp or the like in the middle thereof.

Further, in the present embodiment, as shown in FIGS. 1 and 2, the upstream end and the downstream end of the bypass pipe 19 are connected to the hot-water supply pipe 15 respectively at the passage switching valve 2.
1, 21a are provided.

As shown in FIG. 3, the flow path switching valves 21 and 21a are driven based on a control signal output from the control unit 22. And a sterilization mode in which the hot water from the bathtub 10 is passed through the main circulation flow path and the hot water from the bathtub 10 is passed through the sterilization bypass flow path.

That is, for example, during the time when the bath is not taking a bath, the flow path switching valve 2 is controlled based on the output from the control unit 22.
1 and 21a, and communicates the upstream side of the flow path switching valve 21 and the downstream side of the flow path switching valve 21a with the main circulation flow path,
Move to a valve position that blocks communication with the sterile bypass flow path. Since the circulation pump 14 is always in operation based on the output from the control unit 22, the bath water in the bathtub 10 is discharged from the bathtub 10 through the circulation pump 14 → the flow path switching valve 21 → the biological filtration device 17 b → the heating device 18. And the filtration mode is executed.

In the above-described configuration, the hot water flowing in the circulation channel can be heated by the heating device 18 so that the temperature of the hot water can be constantly maintained at a bathable temperature, and the biological filtration device 17b can be used to supply the hot water. The BOD and COD can be reduced, the clean state can be maintained at all times, and bathing can be enjoyed for a long time without replacing the bath water. In addition, as a filter medium of the biological filtration device 17b, granular porous stone such as barley stone, zeolite, or ceramic is used.

In this case, only the filtration of the bath water is performed,
Since sterilization is not performed, there is no need to energize the ultraviolet sterilizer 20. In this filtration mode, a weak current is applied to the ultraviolet sterilizer 20 to perform sterilization with a weak sterilizing power. Thereafter, in the sterilization mode described later, a strong current is applied to the ultraviolet sterilizer 20 to sterilize with a strong sterilizing power. You may make it.

In this case, since no human is in the bathtub 10, the growth of bacteria in the biological filtration device 17b due to nutrients such as sweat, lipids and proteins secreted from the human body is small. The outflow of bacteria from 17b is small, and the bacteria in the bath water in the bathtub 10 are relatively reduced, and are stabilized at 10 4 to 10 5 cells / ml.

Next, at the time of bathing, the flow path switching valves 21 and 21a are manually driven before bathing, and the upstream side of the flow path switching valve 21 and the downstream side of the flow path switching valve 21a are separated by a sterilizing bypass flow path. And moves to a valve position for cutting off the communication with the bath hot water supply pipe 15 of the main circulation flow path to which the biological filtration device 17b is attached. Since the circulation pump 14 is always in operation, the bath water in the bathtub 10 is recirculated into the bathtub 10 through the circulation pump 14, the flow path switching valve 21, and the ultraviolet sterilizer 20, and the sterilization mode is executed. Will be.

As described above, in this embodiment, before or during bathing, only bath water is sterilized. In this case, the output of the ultraviolet sterilizer 20 is made variable in conjunction with the driving of the flow path switching valves 21 and 21a.

At this time, even if the bath water in the bathtub 10 contains a large amount of bacteria due to the bacteria attached to the bather's body peeling off, the outflow of the bacteria from the biological filtration device 17b does not occur. Since there is no sterilization only in the bath water in the bathtub 10, the sterilization efficiency is good and the number of bacteria can be rapidly reduced. In addition, the sterilization time, that is, the irradiation time of the ultraviolet sterilization apparatus 20 can be shortened, and the economical effect of reducing the electricity consumption can be achieved.

Further, as the ultraviolet sterilizer 20, a device having a normal output can be used without using a large-scale ultraviolet sterilizer 20 having a large output, so that the bath water purifying apparatus A can be made compact.

In addition, the output of the ultraviolet sterilizer 20 is increased only in the sterilization mode, that is, when the flow path switching valves 21 and 21a are switched to the valve positions of the sterilization bypass flow paths. Since it is sufficient to drive the vehicle only when taking a bath, the amount of electricity used can be significantly reduced from this aspect, and an economic effect can be obtained.

Next, referring to FIGS. 4 (a) to 4 (c), operation modes in the filtration mode and the sterilization mode will be described.

FIG. 4A shows a typical operation mode, in which the operation mode is switched by a user pressing a mode selection switch on an operation panel such as a remote controller before bathing. is there.

At this time, each time the mode selection switch is pressed by the timer, the sterilization mode may be continued for, for example, 30 minutes, and then automatically returned to the filtration mode.

However, instead of manually operating the mode selection switch, the operation time in the filtration mode and the operation time in the sterilization mode may be set in advance by a timer. In this case, the operation time is automatically set to the time set by the control unit 22. A drive signal is supplied to the flow path switching valves 21 and 21a, so that the operation in the filtration mode and the operation in the sterilization mode can be performed alternately.

FIGS. 4B and 4C show a case where the so-called control unit 22 is provided with a learning function or a learning program.

That is, since the sterilization mode is substantially a bathing mode, as shown in FIG. 4B, the mode selection switch is frequently pressed in the evening or before going to bed.
In consideration of a certain tendency based on the lifestyle of the user, the time when the mode selection switch is pressed is recorded, and this is statistically processed. By performing sterilization for a certain period of time before the time required for the sterilization effect to appear, the bacteria in the bath water in the bathtub 10 can be reduced without pressing the mode selection switch at the time of bathing. Can be.

In this case, the preceding time is, as described later, the time required to circulate the hot water in the bathtub 10 (for example, the bathtub capacity) since the flow rate in the sterilization mode is 8 to 12 liters / minute. For 30 minutes to 1 hour).

Further, in addition to or instead of the mode selection switch, as shown in FIG.
A temperature sensor T is attached to the side wall of the bath, and the temperature sensor T detects a drop in the temperature of the bath water when the bather enters the bathtub 10, and based on the detected value, the control unit 22 sends a flow path switching valve. A drive signal may be sent to the motor 21, 21 a, or the like so that operation in each mode can be performed.

Incidentally, instead of such a temperature sensor T,
A water level sensor that detects an increase in bath water level when a bather enters the bathtub 10, an ultrasonic sensor or an infrared sensor that detects a bather entering a bathroom can be used.

In the present embodiment, the bath water purifying apparatus A comprises:
There is provided a flow rate adjusting means for setting a flow rate of the bath water flowing in the sterilization bypass flow path in the sterilization mode to be lower than a flow rate of the bath water flowing in the main circulation flow path in the filtration mode.

More specifically, the flow rate adjusting means is constituted by an inverter for controlling the rotation speed of the rotation motor of the circulation pump 14.

When the mode selection switch is pressed, a control signal is sent from the control unit 22 to the inverter, so that the rotation speed of the rotary motor of the circulating pump 14 is reduced, and the bath flowing through the sterilization bypass flow path is reduced. The flow rate of the hot water can be made lower than the flow rate of the bath water flowing through the main circulation channel in the filtration mode.

As described above, in the sterilization mode, by reducing the flow rate of the bath water, the bath water passing through the ultraviolet sterilizer 20 can be sterilized over a sufficient time, and the sterilization efficiency is high.

FIG. 5 shows the correlation between the flow rate and the viable cell rate. As shown in FIG. 5, the viable cell rate is significantly reduced when the flow rate is set to 8 to 12 liters / minute. Therefore,
The flow rate is desirably in the range of 8 to 12 liters / minute.

Further, since it is sufficient to reduce the flow rate only in the sterilization mode, a sufficient flow rate can be secured in the filtration mode, so that the filtering function of the biological filtration device 17b is not reduced. As will be described later, air can be effectively mixed into the hot spring water using the ejector effect, and the bather can obtain a desired massage effect.

In this embodiment, an inverter is used as the flow velocity adjusting means.
A configuration in which a stepping motor, a DC motor or a servo motor capable of substantially steplessly controlling the rotation speed is used, or a mechanical reduction mechanism such as a planetary gear device is provided between the rotation motor and the output shaft of the circulation pump 14. It may be.

Further, the flow rate adjusting means is provided with an ultraviolet sterilizer 2.
And a flow control valve such as a ball valve, a ball valve, or a needle valve, which is provided on the upstream side of the motor 0, and the flow control valve is driven and controlled by a drive signal from the control unit 22 to the ultraviolet sterilizer 20. The flowing velocity of the flowing bath water may be reduced.

Next, another configuration in the illustrated embodiment (FIGS. 1 and 2) will be described as follows.

As shown in FIGS. 1 and 2, in the present embodiment, safety is ensured, appearance is improved, and the bath water purifying device A is used.
The circulation pump 14, the filtration device 17, the heating device 18, and the ultraviolet sterilizer 20 are housed in a rectangular box-shaped protective case 25 placed on the upper edge 11 of the bathtub 10 in a watertight state in order to make the device compact. are doing. The main body H is constituted by the circulating pump 14, the filtering device 17, the heating device 18, the ultraviolet sterilizing device 20, and the protective case 25 containing them.

As shown in FIGS. 1 and 2, the hot-water suction pipe 13 has a hair catcher 2 at a suction port 12 at the tip thereof.
6, and a filter device 27 to which the filter element 28 is detachable is mounted in the middle.

FIGS. 6 and 7 show a specific configuration of the filter device 27. FIG.

As is apparent from FIG.
Reference numeral 7 denotes an apparatus main body 31 formed of an L-shaped box in a side view, having a hot water inflow cylindrical portion 29 and a hot water outflow cylindrical portion 30 provided on an upper surface and a lower surface, respectively. And a cassette type filter replacement cartridge 32
A filter element 28 made of a rectangular sponge or the like is detachably attached to the filter replacement cartridge 32. As the attaching / detaching means, a well-known connecting means such as a bayonet or a toggle latch can be used, but is not shown in this embodiment.

The apparatus main body 31 includes a ceiling plate 31a and a bottom plate 31.
b, left and right side plates 31c, 31d, front and rear side plates 31e, 31f
Rear space 33 defined by the bottom plate 31g,
A front space 34 of an upper surface opening defined by left and right plates 31h and 31j and front and rear plates 31j and 31k is provided.

On the other hand, the filter replacement cartridge 32
Ceiling plate 32a, left and right side plates 32b, 32c, front and rear side plate 32
d, 32e, and a filter mounting space 3 formed at the rear of the rear side plate 32e.
6 is provided.

The front space 34 is provided with the bath water inflow cylinder 2.
9 communicates with the upstream side of the hot-water suction pipe 13, while the rear space 33 communicates with the downstream side of the hot-water suction pipe 13 via the hot-water outlet tube 30.

Therefore, when the filter replacement cartridge 32 is mounted on the apparatus main body 31, as shown in FIG. 6, the upstream side of the bath hot water suction pipe 13 → the bath hot water inflow cylindrical portion 29 →→ the front space 34 → the rear space. 35 → filter element 28 → rear space 33 → bath water outflow cylinder part 30 → bath water flows through the upstream side of bath hot water suction pipe 13 and, at this time, large dust is collected by filter element 28. Become.

At this time, the rear spaces 33, 35 and the front space 34 may be filled with a physical adsorption filter medium to assist the filter element 28.

In this embodiment, the filter device 2
Since the filter 7 is disposed above the bath water level in the bathtub 10, the replacement of the filter element 28 can be easily performed.

As shown in FIGS. 1, 2 and 6, the hot water suction pipe 13 is provided with a check valve 40 upstream of the filter device 27.
When replacing the filter element 28,
It is possible to prevent the bath water staying in the circulation pump 14 from flowing out and to wet the hands. Further, even when the self-contained circulation pump 14 is not used, the presence of the check valve 40 can eliminate the need for priming work.

An ejector device 41 is provided on the bath hot-water supply pipe 15 at a position between the flow path switching valve 21 and the biological filtration device 17b.
Is connected to the other end of an air suction pipe 43 having an air suction port 42 open to the atmosphere at one end.

With this configuration, a negative pressure is generated in the ejector device 41 by the flow of hot water flowing through the hot water supply pipe 15, and air is mixed into the hot water flowing through the ejector device 41 through the air suction pipe 43. After that, the hot water containing air bubbles can flow into the biological filtration device 17b.

Therefore, the aerobic bacteria in the biological filtration device 17b can be activated, the filtration function can be enhanced, and the propagation of anaerobic bacteria can be prevented.

The bypass pipe 19 which forms the bypass channel for sterilization is connected to a portion between the ultraviolet sterilizer 20 and the flow switching valve 21 through the flow switching valve 44 through the biological filtration device 1.
It is in communication with a physical filtration device 17a mounted on 7b.

With this configuration, the bath water in the bathtub 10 is supplied to the circulation pump 14 → the flow path switching valve 21 → the bypass pipe 1
9 → physical filtration device 17a → biological filtration device 17b → a main circulation channel consisting of a heating device 18 will be formed,
By recirculating the bath water into the bathtub 10 through the main circulation channel, a two-stage filtration mode of physical filtration and biological filtration is executed. This two-stage filtration mode is executed, for example, when the bacteria in the biological filtration device 17b cannot stably absorb and decompose organic substances, for example, at the start-up of the initial operation. That is, the physical filtration device 1
7a plays an auxiliary role of the biological filtration device 17b.

The bath hot-water supply pipe 15 is also provided with an ejector device 45 at the jet port 16 at the end thereof, and the ejector device 45 has an air suction port 4 at one end which is open to the atmosphere.
6 is connected to the other end of the air suction pipe 47.

With this configuration, a negative pressure is generated in the ejector device 45 by the flow of hot water flowing through the hot water supply pipe 15, and air is mixed into the hot water flowing through the ejector device 45 through the air suction pipe 47. After that, hot water mixed with air bubbles can be spouted into the bathtub 10, and a desired massage effect can be obtained.

In this embodiment, as shown in FIG. 1, one end of a backwash drain pipe 48 is connected to the flow path switching valve 21 and the flow path switching valves 21 and 21a are driven by a drive signal from the control unit 22. By this, the hot water in the bathtub 10 is supplied to the circulation pump 1
4 → Flow path switching valve 21 → Bypass pipe 19 → Sterilizer 20
→ The flow path switching valve 21a → the biological filtration device 17b → the bath hot water supply pipe 15 → the flow path switching valve 21 → the water can flow out to the outside through the backwash drain pipe 48. That is, a backwash mode for backwashing the filtration device 17 becomes possible.

In the present embodiment, since the heating device 18 is disposed downstream of the ultraviolet sterilizer 20, the heat retention and heating of the bath water can be ensured not only in the filtration mode but also in the sterilization mode. .

As shown in FIGS. 1 and 8, the bath water purifier A includes a main body H installed in the bathroom and an alarm device 50 installed outside the bathroom. An emergency switch 49 is attached to the front of and below the protective case 25 constituting the main body H. The switch 49 is provided on the back side of one side wall of the bathroom, for example, an alarm device 50 provided in the kitchen and a lead wire. 51 are connected. Therefore, when the elderly person C becomes sick during bathing, the alarm device 50 can be driven and alarmed by pressing the emergency switch 49, and the housewife D in the kitchen can be notified of the alarm. Thereby, housewife D can quickly take appropriate measures. The emergency switch 49 is provided on the front surface of the main body H installed in the bathroom, that is, on the side surface of the bath water suction pipe (13) and the bath water pressure supply pipe (15) on the outlet side into the bathtub 10, so that the bather can take a bath. Emergency switch 49
Can be confirmed immediately, and the operability is improved because it is arranged on the surface which is the shortest distance from the bather in the bathtub (10), so that other people (for example, in the kitchen) can be quickly and reliably. The danger can be notified to the housewife D). Further, since the emergency switch 49 is provided below the main body H, the bather can easily operate the emergency switch 49 from the bathtub 10. In consideration of the radio wave interference, an alarm device 50 using the conductor 51 is used.
It is preferable to use a wireless alarm device as long as it can notify the danger from the bathroom to the outside of the bathroom.

In FIGS. 1 and 2, S is a flow rate sensor, and 52 is a power supply box. In addition, as shown in FIG. 8, a conducting wire connecting the power supply box 52 and the bath water purification device A is provided.
The wire 52a extends into the bathroom through the single opening 53 provided in the bathroom wall together with the wire 51 connected to the alarm device 50, so that the wiring work of the wires 51 and 52a can be easily performed. That is, when the bath water purifying device is installed, the opening 53 is originally formed in the bathroom wall for passing the conducting wire 52a for the power supply, but the conducting wire 51 can be passed outside the bathroom by using the opening 53. Therefore, there is no need for new additional work.

[0062]

As described above, according to the present invention, a circulating pump (14) is provided in the middle of a bathwater circulation channel having a bathwater inlet (12) and a bathwater outlet (16) at both ends. Filtration device (1) for the purpose of adsorbing and removing human dirt components in bath water
7) and a heating device (18) for heating the bath water, the circulation pump (14), the filtration device (17), the heating device (18), and a protective case (25) for accommodating these.
And a filtration channel for discharging the hot water flowing from the hot water inlet (12) through the filtering device (17) and then discharging the hot water from the hot water jet (16). ,
The bath water flowing in from the bath water inlet (12) is caused to flow back through the filtration device (17) by the flow path switching means, and then the backwash drainage is provided in a separate flow path from the bath water jet port (16). A hot water suction pipe for selectively switching the backwash flow path discharged from the pipe 48 and installing the hot water suction port (12) in the bathtub (10) from the main body (H). (13)
And a hot-water supply pipe (15) for installing the hot-water jet port (16) in the bathtub (10), in the axial direction of the main body (H) near the front of the main body (H). The main body (H) is arranged in a hanging form so that the main body (H) is placed in a bathtub (10).
The backwash drain pipe 4 is configured so that it can be placed on the upper edge (11).
8 is drawn out from the main body (H) at a position separated from the bath hot water suction pipe (13) and the bath hot water pumping pipe (15), and is derived from the bath hot water suction pipe (13) and the bath hot water pumping pipe (15). An emergency switch (49) is provided on the front side of the main body (H), and an alarm device (50) is provided outside the bathroom away from the main body (H). The alarm device (50) is connected to the emergency switch (50). By making it drivable by the operation of (49), the emergency switch (49) can be immediately checked even if the user is in a hurry, and the emergency switch (49) is connected to the bathtub (1).
0) The operability is improved because it is arranged on the surface which is the shortest distance from the bather in the room, and therefore, it is possible to quickly and reliably notify other people (for example, housewife D in the kitchen) of danger. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bath water purification device according to the present invention.

FIG. 2 is a conceptual configuration diagram of the bath water purification device.

FIG. 3 is a control block diagram.

FIG. 4 is a timing chart showing an operation mode.

FIG. 5 is a graph showing a correlation between a flow rate of bath water flowing in a bacterial device and a viable cell rate.

FIG. 6 is a sectional front view of the filter device.

FIG. 7 is an exploded perspective view of the filter device.

FIG. 8 is an explanatory view of the entire installation state of the bath water purification device according to the present invention.

[Brief description of reference numerals]

 A Bath water purification device H Body 10 Bath tub 12 Bath hot water inlet 13 Bath hot water suction pipe 14 Circulating pump 15 Bath hot water supply pipe 16 Bath hot water jet 17 Filtering device 18 Heating device 25 Protection case 49 Emergency switch 50 Alarm device 51 Lead wire

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification code FI F24H 9/00 F24H 9/00 W (56) References JP-A-63-1221 (JP, A) JP-A-4-1360 ( JP, A) JP-A-3-57358 (JP, U) JP-B-5-1012 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01D 35/027 A47K 3/00

Claims (1)

(57) [Claims] 1. A circulating pump (14) and adsorption of a human body component in a bath water in the middle of a bath water circulation channel having a bath water inlet (12) and a bath water jet (16) at both ends. A filtration device (17) for removal and a heating device (18) for heating the bath water are provided, and the circulation pump (14), the filtration device (17), the heating device (18), and The main body (H) is constituted by the protective case (25) to be stored, and the hot water flowing from the hot water inlet (12) is filtered by the filtration
After passing through the device (17),
Flow from the hot water inlet (12)
The bath water that has entered is filtered by the flow path switching means into the filtration device (1).
7) Backflow, and then the bath water jet (16)
The backwash channel discharged from the backwash drain pipe 48, which is a separate channel,
It is selectively switchable , and the bath water inlet (12) is connected to the bathtub from the main body (H).
(10) a bath water suction pipe (13) for installation inside;
Install the bath water jet (16) in the bathtub (10)
And a hot-water supply pipe (15) for
Arranged in the form of hanging forward in the axial direction of the body (H)
By installing, the main body (H) is placed on the upper edge of the bathtub (10).
(11), and the backwash drain pipe 48 is connected to the hot water suction pipe (13) or the upper part.
From the main body (H) at a position away from the hot water supply pipe (15)
Derived and derived the bath hot water suction pipe (13) and bath hot water supply pipe (15)
Emergency switch (49) on the front of the main unit (H)
And a warning device (50) provided outside the bathroom away from the main body (H), and the warning device (50) can be driven by operating the emergency switch (49). Water purification device.