JPH0416178B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention involves sucking the water in the bathtub from the bathtub, mixing air into it, and spraying it back into the water in the bathtub from the side of the bathtub. The present invention relates to a bathtub system configured as follows.

<Conventional technology> Conventionally, as a special function in a bathtub system,
There is a jet mode in which a foam jet flow mixed with air is ejected from two opposing sides (dorsal side and foot side) of the bathtub. In this jet mode, the dorsal and leg sides are used independently, or both at the same time, allowing the bather to choose between turning them on and off using independent switches. .

As a bathtub system in which the water in the bathtub can be filtered at the same time when the jet mode is activated, the applicant of the present application is considering, for example, a bathtub system as shown in FIG. 4.

As shown in the figure, the bathtub 1 is provided with a suction port 2 on one side wall 1a of the opposing side walls 1a and 1b, and a suction port ₂ for guiding water inside the bathtub to the outside. Two walls are provided on each of the walls 1a and 1b for mixing air and bathtub return water (the supply system for these will be described later) and jetting jet flows Ja and Jb for foamy pine surge into the bathtub water _W0 . Jet nozzles 3a and 3b are provided.

Individual air supply pipes 5a, 5b are connected to each jet nozzle 3a, 3b, and each air supply pipe 5
A common air control valve 6 is interposed between a and 5b. The suction port 2 and the suction side of the circulation pump 8 are connected via an upstream circulation pipe 7c, and the discharge side of the circulation pump 8 and each jet nozzle 3a, 3b are connected via downstream circulation pipes 7a, 7b, respectively. The circulation pipe 7 is composed of the upstream circulation pipe 7c and the downstream circulation pipes 7c and 7b. Return water control valves 9a and 9b are interposed in each of the downstream circulation pipes 7a and 7b, respectively.

A steam/water separation tank 1 is connected to a branch pipe 10 from a branch part 7d of the circulation pipe 7 on the downstream side of the circulation pump 8.
An inlet of a filter tank 15 is connected to one outlet of the steam/water separation tank 11 via a pipe 12, a first three-way valve 13, and a pipe 14. The outlet of the filtration tank 15 is connected to the circulation pipe 7 via the pipe 16, the second three-way valve 17, and the confluence pipe 18.
It is connected to a confluence section 7e of an upstream circulation pipe 7c between the suction port 2 and the circulation pump 8. A drain pipe 19 is connected to the first three-way valve 13, and the second three-way valve 17 and the other outlet of the steam/water separation tank 11 are connected via a pipe 20.

A plurality of air blow nozzles 2 are installed on the bottom wall 1c of the tank 1.
1, these air blow nozzles 21 are connected to an air pump 24 for air blowing via a header 22 and an air blow pipe 23, and an air blow control valve 25 is interposed in the air blow pipe 23.

The remote control operation section 26 includes a driving switch S ₁ , a dorsal jet switch S ₂ , and a foot jet switch S 2 .
S ₃ , Backwash switch S ₄ , Air blow switch S ₅ , Up-down key for adjusting the amount of jet water on the back side S ₆ , Up-down key for adjusting the amount of water on the leg side jet S ₇ , Up-down key for adjusting the amount of jet foam S ₈ , Air blow An up-down key _S9 for adjusting the amount of foam and a liquid crystal display panel 27 are provided.

Based on various commands from the remote control operation unit 26, the sequence controller 28 controls the air control valve 6, circulation pump 8, return water control valves 9a, 9b, first and second three-way valves 13, 17, air pump 24,
The corresponding elements of the air blow control valve 25 are sequentially controlled. The two-dot chain line indicates those control systems.

Next, the operation of this conventional bathtub system will be explained.

Pressing the run switch _S1 activates the sequence controller 28.

Therefore, when the dorsal side jet switch _S2 or the foot side jet switch _S3 is pressed, the sequence controller 28 executes the dorsal side or foot side jet mode. That is, the bathtub water sucked out from the bathtub 1 flows as shown by the solid line arrow, a part of which is purified by filtration, and this purified water is mixed with air and becomes a jet stream for foamy pine surge. The water in the bathtub is refluxed into water _W0 . In addition, dorsal jet switch S ₂ or foot jet switch S ₃
When is pressed again, the sequence controller 28 stops the circulation pump 8 and exits the jet mode.

Then, when the backwash switch _S4 is pressed, the sequence controller 28 executes a backwash mode for washing the filtration tank 15. That is, the bathtub water sucked out from the bathtub 1 flows as shown by the broken line arrow, removes dirt accumulated in the filter tank 15, regenerates the filter tank 15, and drains the dirt-containing bath water. Note that when the backwash switch _S4 is pressed again, the sequence controller 28 turns the circulation pump 8
and exit backwash mode.

Furthermore, when the air blow switch S ₅ is pressed, the sequence controller 28 opens the air blow control valve 25 and drives the air pump 24 to blow water in the bathtub W ₀ from the air blow nozzle 21.
An air blow is applied that envelops the entire body of the bather. Note that when the air blow switch _S5 is pressed again, the air blow mode operation is stopped.

<Problems to be Solved by the Invention> In the conventional bathtub system described above, the bathtub water is filtered and cleaned while the jet mode is being executed, and the filtration cannot be performed for the next bather after bathing. It's summery.

However, in the case of this conventional example, although it is possible to perform filtration by specifying the jet mode, for example, when both the dorsal side and leg side jet modes are being executed, both jet streams are The water in the bathtub may interfere with water and become irregularly disturbed.
The applicant has confirmed through experiments that the dirt in W ₀ tends to stay in the center of the bathtub 1 and is difficult to be sucked out from the suction port 2, making it difficult for cleaning to proceed. . On the other hand, when only one jet mode is running,
Even with the jet flow in the bathtub, the water in the bathtub W ₀
It has been confirmed that since the water in the bathtub is circulated in one direction, the dirt in the bathtub water W ₀ is easily sucked out from the suction port 2, making it easier to clean the bathtub.

However, this is not something the user knows about, and it is inconceivable for the user to perform a selective operation to execute one jet mode when filtration is desired. It has been pointed out that the functions are insufficient.

It has also been pointed out that when bath water is filtered, a jet stream is ejected, and the sound generated by this jet stream becomes harsh. This jet stream should be unnecessary if we focus only on filtration.

The present invention was devised in view of these circumstances, and its first objective is to provide a high filtration capacity while making the filtration operation easy and clear. The second
The purpose of the system is to allow users to arbitrarily select between a rapid filtration mode that increases filtration capacity at the expense of some noise, and a silent filtration mode that allows for quiet filtration of bathtub water without jet flow. The goal is to improve the functionality of bathtub systems and increase added value.

<Means for Solving the Problems> In order to achieve such objects, the present invention has the following features:
A suction port provided in the bathtub to guide water in the bathtub to the outside, and a suction port provided in each of the side walls facing the bathtub to mix air and return water in the bathtub and jet a jet stream for foamy pine surge into the water in the bathtub. one jet nozzle, an air supply pipe connected to each jet nozzle, an air control valve interposed in the air supply pipe, a circulation pump interposed in a circulation pipe connecting the suction port and both jet nozzles, and a circulation pump interposed in the circulation pipe connecting the suction port and both jet nozzles. a reflux water control valve that is interposed in the circulation piping between the pump and each of the jet nozzles and controls the supply of reflux water to each jet nozzle; and a filtration that is connected to the circulation piping in parallel with the circulation pump. A part of the bathtub water sucked in from the suction port is guided from the circulation pump to the filtration tank to be filtered, and the clean water is returned to the bathtub from the circulation pump to each jet nozzle together with the bathwater from the suction port. A bathtub system configured to introduce flowing water, mix air and bathtub return water in each jet nozzle, and jet the water into the bathtub water as a jet stream for foamy pine surge, has the following configuration.

The first bathtub system of the present invention includes a designating means for designating the rapid filtration mode, and when designating the rapid filtration mode, opens the air control valve and opens the return water control valve leading to the one jet nozzle. It is characterized by having a sequence controller on the side.

A second bathtub system of the present invention includes a filtration mode selection means for selecting between a silent filtration mode and a rapid filtration mode, and when the silent filtration mode is selected, the air control valve is closed, and when the rapid filtration mode is selected, the air control valve is closed. It is characterized in that it includes a sequence controller that opens the control valve and opens the flow path leading to one jet nozzle.

<Operation> The operation of the above configuration of the present invention is as follows.

According to the first bathtub system, when the rapid filtration mode is specified, the flow path leading to one jet nozzle is opened, but the flow path leading to the other jet nozzle is closed. Water is circulated in one direction, making it easier to suck out foreign substances to the outside. Although some noise is generated by the jet flow, the agitation of the water in the bathtub is strengthened, so the filtration ability is strengthened. Since the filtration function is provided separately from the jet function in this way, when performing filtration, it can be specified unconsciously, eliminating confusion in operation.

According to the second bathtub system, there are two modes for performing filtration, so any one can be selected depending on the situation. Moreover, one rapid filtration mode is similar to the one described above, and although quietness is sacrificed, efficient filtration can be performed and time can be shortened. Further, in the other silent filtration mode, the air control valve is closed, so that the return water becomes a simple water flow without air being mixed in, and no harsh sound is generated.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic diagram of a bathtub system according to an embodiment of the present invention. Here, a bathtub system is exemplified that has two jet functions, a back side jet function and a foot side jet function, as well as an air blow function.

In the figure, 1 is a bathtub, 1a and 1b are bathtubs 1
1c is a bottom wall part, 2 is a suction part, 3a, 3b are jet nozzles, 5a, 5b are air supply pipes, 6 is an air control valve, 7 is a circulation pipe,
7a and 7b are downstream circulation pipes, 7c is upstream circulation pipes, 7d is a branch part, 7e is a confluence part, 8 is a circulation pump, 9a and 9b are reflux water control valves, 10 is a branch pipe, and 11 is a steam/water separation Tank, 12, 14, 16,
20 is a pipe, 13 is a first three-way valve, 15 is a filtration tank, 17 is a second three-way valve, 18 is a confluence pipe, 19
is a drain pipe, 21 is an air blow nozzle, 22 is a header, 23 is an air blow pipe, 24 is an air pump for air blow, 25 is an air blow control valve, 26a
2 is a remote control operation unit, 27a is a liquid crystal display panel, 2
8a is a sequence controller, Ja and Jb are jet flows, and _W0 is water in the bathtub. These configurations are
Since it is the same as the conventional example explained in FIG. 4 except for the remote control operation section 26a and the sequence controller 28a, the same reference numerals are given here, and the explanation thereof will be omitted.

The configuration of this embodiment that differs from the conventional example is as follows.

The remote control operation section 26a includes a liquid crystal display panel 27.
a, as well as an operation key K ₁ , a dorsal jet key K ₂ , a foot jet key K ₃ , and a backwash key
K ₄ , Air blow key K ₅ , Back jet water volume selection key K ₆ , Leg side jet water volume selection key K ₇ , Jet foam volume selection key K ₈ , Air blow foam volume selection key K ₉
and filtration mode selection key _K10 .

The back side and foot side jet water volume switching keys K ₆ , K ₇ , jet foam volume switching key K ₈ , and air blow foam volume switching key K ₉ are used to switch the water volume or foam volume into three levels, and also switch the filtration mode. selection key
₁₀ is for switching between three states: rapid filtration mode, silent filtration mode, and filtration stop. Switching between these three stages or three states is performed by up-counting and resetting a 2-bit counter in the sequence controller 28a. For example, if you press the filtration mode selection key _K8 once, the count value will change to the initial value [0,0]
When pressed twice, the count value changes to [1,0] and silent filtration mode is selected; when pressed three times, the counter is reset to initialization. The value returns to [0,0] and filtration stops.

The sequence controller 28a controls the air control valve 6, the circulation pump 8, the reflux water control valves 9a and 9b, and the first and second three-way valves 13 based on the operations of various keys _K1 to _K10 on the remote control operation section 26a. ,1
7. Corresponding elements of the air pump 24 for air blowing and the air blow control valve 25 are sequentially controlled.

Next, the operation of this embodiment will be explained.

Pressing the run key _K1 activates the sequence controller 28a.

[1] Jet mode Dorsal jet key K ₂ or foot jet key
When K ₃ is pressed, the sequence controller 28
a is the air control valve 6 and the return water control valves 9a, 9;
Set b to the open side. The opening amount of the air control valve 6 can be switched to three levels depending on the number of times the jet foam amount switching key _K6 is pressed.
The opening amount can be changed to three levels depending on the number of times the jet water amount switching key _K5 is pressed.

Next, the sequence controller 28a puts the first three-way valve 13 into communication between the pipes 12 and 14, and connects the second three-way valve 17 with the pipe 1.
6. After the merging pipes 18 are connected to each other, the circulation pump 8 is driven.

Then, as shown by the solid arrow, the water in the bathtub W ₀
is sucked into the upstream circulation pipe 7c from the suction port 2 by the suction force of the circulation pump 8, and the bath water reaches the branch part 7d from the circulation pump 8, where it is connected to the downstream circulation pipes 7a, 7b and the branch pipe 10 side. It is divided into

Some of the bath water diverted to the branch pipe 10 side is
After passing through the steam/water separation tank 11, the piping 12,
The water flows from the forward direction into a filtration tank 15 via the first three-way valve 13 and piping 14, and dirt contained in the bathtub water is removed in the filtration tank 15. The clean water that has passed through the filter tank 15 reaches the confluence part 7e via the pipe 16, the second three-way valve 17, and the confluence pipe 18,
At this merging portion 7e, the bath water from the suction port 2 joins with the bath water and reaches the circulation pump 8 again.

The bathtub water in which the bathtub water from the suction port 2 and the clean water are combined flows through downstream circulation piping 7a, 7b,
It reaches both jet nozzles 3a, 3b via the return water control valves 9a, 9b, where it is mixed with the air supplied via the air supply pipes 5a, 5b and the air control valve 6, and the water in the bathtub W ₀ It is ejected as jet streams Ja and Jb for foamy pine surge.

The duration of operation in the jet mode is 15 minutes, but if the same operation continues for 5 minutes, the filter tank 15 is automatically backwashed. That is, sequence controller 2
8a, when the internal timer counts 5 minutes, the jet mode is temporarily interrupted and the first three-way valve 13 is turned on.
The filtration tank 15 is backwashed by bringing the pipe 14 and the drain pipe 19 into communication with each other, and by switching the second three-way valve 17 into communication with the pipes 20 and 16. This backwashing is carried out for one minute, and when it is finished, the jet mode is returned to.

If the jet key _K3 is pressed again, the circulation pump 8 will stop. Even if you do not press it, the circulation pump 8 will automatically stop when the jet mode operation has exceeded the continuous operation time (15 minutes).

[2] Rapid filtration mode When selecting the filtration mode, if you want to select the rapid filtration mode, press the filtration mode selection key _K10 only once. Then, the counter in the sequence controller 28a is incremented from the initial value [0, 0] to [0, 1], and the rapid filtration mode is set. As a result, the sequence controller 28a opens the air control valve 6 and one of the return water control valves 9a, and opens the other return water control valve 9a.
Set b to the closed side. In this case, the air control valve 6 is fully open, the return water control valve 9a is at a middle opening, and the return water control valve 9b is fully closed.

Next, the sequence controller 28a puts the first three-way valve 13 into communication between the pipes 12 and 14, and connects the second three-way valve 17 with the pipe 1.
6. After the merging pipes 18 are connected to each other, the circulation pump 8 is driven.

Then, the water in the bathtub _W0 is sucked into the upstream circulation pipe 7c from the suction port 2 by the suction force of the circulation pump 8, and some of the bathwater water flows from the circulation pump 8 to the branch part 7d and the air-water separation tank 11. filtration tank 15
The dirt contained in the bathtub water is removed. The clean water that has passed through the filter tank 15 joins with the bath water from the suction port 2 at the confluence section 7e, and flows from the circulation pump 8 into the downstream circulation pipe 7a on the side where the suction port 2 is present. Since the return water control valve 9b is fully closed, no water flows into the downstream circulation pipe 7b on the opposite side from the suction port 2.

As shown in FIG. 2, the partially purified bath water that has flowed into the downstream circulation pipe 7a reaches the jet nozzle 3a on the side where the suction port 2 is present via the return water control valve 9a, where the air is It is mixed with the air supplied via the supply pipe 5a and the air control valve 6, and is ejected into the bathtub water _W0 as a jet flow Ja for foamy pine surge on the foot side. On the contrary,
There is no jet stream Jb ejected from the jet nozzle 3b on the side opposite to the suction port 2.

The jet flow Ja ejected from the jet nozzle 3a on the side where the suction port 2 is present reaches the side wall portion 1b on the opposite side from the suction port 2 from the central portion of the bathtub 1.
Since the bathtub water W 0 causes a large convection flow W _C that detours from there and passes under the central part of the bathtub 1 to the suction port 2, dirt in the bathtub water _{W 0 is} efficiently taken out from the suction port 2. Can be filtered.

Figure 3 shows the filtration time-turbidity characteristic A in the case of the jet mode in which jet streams Ja and Jb are jetted from both jet nozzles 3a and 3b, and the case in the rapid filtration mode in which the jet flow Ja is jetted only from the jet nozzle 3a. Filtration time-turbidity characteristics B
and As is clear from this figure, the time required to purify the water W ₀ in the bathtub until the turbidity falls below a certain level is much shorter in the rapid filtration mode.

However, since the jet flow Ja is ejected from one jet nozzle 3a, quietness is sacrificed compared to the silent filtration mode described later.
Still, it has the advantage of being quieter than the jet mode in which both jet streams Ja and Jb are ejected, and can be filtered more rapidly.

The operating duration of the rapid filtration mode is 15 minutes, but as in the case of the jet mode, the filtration tank 15 is backwashed for 1 minute every 5 minutes, and once that is finished, the mode returns to the rapid filtration mode. do.

When the continuous operation time in rapid filtration mode has elapsed,
Circulation pump 8 stops. If you want to switch to silent filtration mode while operating in rapid filtration mode,
If you want to press the filtration mode selection key _K10 again and stop the operation, you can press the filtration mode selection key _K10 twice in succession.

[3] Silent filtration mode When selecting the filtration mode, if you want to select the silent filtration mode, press the filtration mode selection key _K10 twice in succession. Then, the counter in the sequence controller 28a becomes the initial value [0, 0]
The value is counted up from [1, 0], and the silent filtration mode is set. Thereby, the sequence controller 28a opens one of the return water control valves 9a and closes the air control valve 6. In this case, the opening amount of the return water control valve 9a becomes the middle opening amount of the three stages, and the air control valve 6 becomes fully open.

Next, the sequence controller 28a puts the first three-way valve 13 into communication between the pipes 12 and 14, and connects the second three-way valve 17 with the pipe 1.
6. After the merging pipes 18 are connected to each other, the circulation pump 8 is driven. However, if the mode is switched to the silent filtration mode during operation in the rapid filtration mode, the conditions of the three-way valves 13 and 17 and the circulation pump 8
continues to be driven.

The combined water of a part of the bathtub water purified by the filter tank 15 and the bathtub water from the suction port 2 is sent to one side from the circulation pump 8 via both downstream circulation piping 7a and the return water control valve 9a. The water is returned to the bathtub water _W0 from the jet nozzle 3a. In this case, since the air control valve 6 is fully closed, the jet nozzle 3
In case a, there is no mixing of air with the reflux water, and what is refluxed into the bathtub water W ₀ is a different water flow without foam. Therefore, the bathtub water can be purified quietly without generating any harsh noise. In addition, in this silent filtration mode, both jet nozzles 3
Although it is possible to flow back into the bathtub from a and 3b, it is better to flow back from only one of them in order to suppress the flow rate for quietness.

The operation duration of the silent filtration mode is also 15 minutes, but the filter tank 15 is backwashed for 1 minute every 5 minutes as in the case of the jet mode, and when that is finished, the silent filtration mode is switched back on. Return.

When the continuous operation time in silent filtration mode has elapsed,
Circulation pump 8 stops. When the filtration mode selection key _K10 is pressed during operation in the silent filtration mode, the circulation pump 8 is stopped and the execution of the silent filtration mode is ended.

[4] Backwash Mode The control performed by the sequence controller 28a when the backwash key _K4 is pressed is the same as that of the conventional example, so the explanation will be omitted. The flow of water in the bathtub is as indicated by the dashed arrow. Note that the duration of operation in the backwash mode is 5 minutes.

[5] Air Blow Mode When the air blow key _K5 is pressed, the sequence controller 28a opens the air blow control valve 25. The opening amount of the air blow control valve 25 varies depending on the number of times the air blow foam amount switching key _K9 is pressed.
You can switch to stages. In this case, the control performed by the sequence controller 28a is the same as in the conventional example, so the explanation will be omitted. In addition, the operation continuation time in air blow mode is 15 minutes.

The jet mode, rapid filtration mode, or silent filtration mode can be executed simultaneously with the air blow mode.

In the above embodiment, selection switching between the rapid filtration mode and the silent filtration mode was performed by the number of times the filtration mode selection key _K10 was pressed. Each key may be provided. Further, a common three-way valve may be used in place of the return water control valve in the above embodiment, and the air control valves may be provided individually in each air supply pipe.

<Effect of the invention> According to the present invention, the following effects are achieved.

In the first bathtub system, it is possible to specify a rapid filtration mode in which purified bathwater water is jetted out as a jet stream from one jet nozzle, so that the user can specify filtration easily and clearly. Moreover, although quietness is sacrificed in this rapid filtration mode, based on the large convection of the water in the bathtub, the bathtub water can be efficiently taken out from the suction port and cleaned in a short time.

In the second bathtub system, multiple modes such as the above-mentioned rapid filtration mode and a silent filtration mode in which the bathtub water is purified and returned to the bathtub water in a simple water flow without bubbles from the jet nozzle are used to remove dirt from the bathtub water. Since the bathtub system can be used as desired depending on the user's judgment depending on the situation, it is possible to improve the functionality and add value of the bathtub system.

In particular, in the silent filtration mode, the bathtub water can be purified quietly without generating harsh sounds such as the jet stream.

[Brief explanation of drawings]

Figures 1 to 3 relate to an embodiment of the present invention, with Figure 1 being a schematic diagram of the bathtub system, Figure 2 being a diagram showing convection occurring in the water in the bathtub during rapid filtration mode, FIG. 3 is a diagram showing the relationship between filtration time and turbidity characteristics in jet mode and rapid filtration mode. Moreover, FIG. 4 is a schematic configuration diagram of a bathtub system according to a conventional example. DESCRIPTION OF SYMBOLS 1... Bathtub, 1a, 1b... Side wall part, 2... Suction port, 3a, 3b... Jet nozzle, 5a,
5b...Air supply piping, 6...Air control valve, 7...
...Circulation piping, 8...Circulation pump, 9a, 9b...
Return water control valve, 15...filtration tank, 28a...sequence controller, _K2 ...dorsal jet key,
_K3 ...Foot side jet key, _K10 ...Filtration mode selection key.

Claims (1)

[Scope of Claims] 1. A suction port provided in the bathtub for guiding the water in the bathtub to the outside, and a suction port provided in each of the side walls facing the bathtub to mix air and return water in the bathtub to produce a jet stream for foamy pine surge. two jet nozzles that eject water into the bathtub; air supply piping connected to each of the jet nozzles; an air control valve interposed in the air supply piping; and a circulation piping interposed between the suction port and both jet nozzles. a circulation pump; a return water control valve interposed in the circulation pipe between the circulation pump and each of the jet nozzles to control supply of return water to each jet nozzle; and a return water control valve for controlling the supply of return water to each jet nozzle; and a filtration tank connected in parallel with the suction port, a part of the bathtub water sucked from the suction port is guided from the circulation pump to the filtration tank and filtered, and the clean water is passed through the circulation pump together with the bathtub water from the suction port. The bathtub system is configured to introduce the bathtub return water from the bathtub to each jet nozzle, mix the air and the bathtub returnwater in each jet nozzle, and jet the mixture into the bathtub water as a jet stream for foamy pine surge, the bathtub system comprising: rapid filtration; It is characterized by comprising a designating means for designating a mode, and a sequence controller that opens the air control valve and opens the return water control valve leading to the one jet nozzle when the rapid filtration mode is designated. bathtub system. 2. A suction port provided in the bathtub to guide the water in the bathtub to the outside, and a suction port provided in each of the side walls facing the bathtub to mix air and return water in the bathtub and spray a jet stream for foamy pine surge into the water in the bathtub. two jet nozzles; an air supply pipe connected to each of the jet nozzles; an air control valve interposed in the air supply pipe; a circulation pump interposed in a circulation pipe connecting the suction port and both jet nozzles; a reflux water control valve that is interposed in the circulation piping between the circulation pump and each of the jet nozzles and controls the supply of reflux water to each jet nozzle; and a reflux water control valve that is connected to the circulation piping in parallel with the circulation pump. A part of the bathtub water sucked through the suction port is guided from the circulation pump to the filtration tank and filtered, and clean water is sent from the circulation pump to each jet nozzle in the bathtub together with the bathwater from the suction port. The bathtub system is configured to introduce reflux water, mix air and bathtub reflux water in each jet nozzle, and jet the water into the bathtub water as a jet stream for foamy pine surge, which has a silent filtration mode and a rapid filtration mode. filtration mode selection means for selecting a filtration mode selection means; when selecting the silent filtration mode, the air control valve is closed; when the rapid filtration mode is selected, the air control valve is opened, and the flow path leading to one jet nozzle is opened; A bathtub system characterized by comprising a sequence controller.