JPH031867A - Filter apparatus in bubble generating bathtub - Google Patents

Abstract

PURPOSE:To perform washing operation such as backwashing at a proper time by a method wherein an integrating timer measuring the integration time of bath hot water jet operation is provided and, when the integrated time reaches a definite time, this effect is informed. CONSTITUTION:In a control part C, during the operation of a recirculation pump P, an integrating timer 54 is turned ON to measure the operating time of the recirculation pump P, that is, the integrated use time of a filter 43 and, when this integrated time reaches a definite value, the washing warning lamp F1 provided to an infrared receiving sensor 30b lights and that effect is informed to user to urge the washing operation of the filter 43. By this information, an electromotive three-way valve 45 is changed over and the suction pipe 41 on the upstream side is closed and, when the suction pipe 41 on the upstream side and a drain pipe 46 are brought to a communication state, a part of the bath hot water in a bath hot water forcible feed pipe 11 passes through a return pipe 42 and also passes through the filter material 43c of the filter main body 43a from below to above to make it possible to backwash the filter material 43c.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a filtration device for a bubble-generating bathtub.

(b) Conventional technology In the past, a bath water circulation flow path consisting of a bath water suction pipe and a bath water delivery pipe was interposed between the bathtub body and a circulation pump installed outside the bathtub body. In the bubble-generating bathtub, an air intake part is provided in the middle of the bathwater bullet conveying pipe, and a filter is connected to the bathwater circulation flow path to blow out the bathwater mixed with bubbles into the bathtub. There are things that purify it.

(c) Problems to be Solved by the Invention However, as a filter is used, the filter material gradually becomes clogged and the filtering capacity decreases, so cleaning operations such as backwashing must be carried out in a timely manner. need to be done.

However, since there is no means to notify the user of the state of clogging of the filter material, the user may continue to use the filter while it is clogged and its filtration capacity has decreased, or perform cleaning operations more frequently than necessary. However, it had the disadvantage of being forced to use it inefficiently.

(d) Means for Solving the Problem Therefore, in the present invention, a bathtub consisting of a bath water suction channel and a bath water forced flow channel is provided between the bathtub body and a circulation pump installed outside the bathtub body. A hot water circulation flow path is provided, a jet nozzle is provided at the discharge portion of the forced bath water flow path into the bathtub body, and the jet nozzle is configured to be able to jet the bath water mixed with air bubbles into the bathtub main body, In a bubble-generating bathtub configured to connect a filter to the circulation pump to filter the bathwater flowing through the bathwater circulation flow path, an integration timer is provided to measure the cumulative time of the bathwater spouting operation, and the above-mentioned integration It is an object of the present invention to provide a filtration device for a bubble-generating bathtub, characterized in that it is configured to notify when the time reaches a certain value.

(e) Examples The bubble-generating bathtub according to the present invention will be explained in detail below with reference to the accompanying drawings.

First, the overall structure of the bubble-generating bathtub according to the present invention will be explained.

(A) shown in FIGS. 1 and 2 is a bubble-generating bathtub according to the present invention, and the bubble-generating bath 1ff (A) is the front and back of the bathtub body (1,) formed in a box shape with an opening on the top. Foot, dorsal, and ventral jet nozzles (2) are installed on the wall and left and right side walls, respectively.
2) A total of six (3) (3) (4) (4) are provided.

The bathtub body (1) has a flange-like edge (1a) of a constant width formed on the periphery, and an air intake portion (5) on the edge (1a).
), and four vertically elongated parts (lb) (lb) in a crosswise V-shape are formed approximately in the center of the left and right side walls, and the same recessed parts (lb) (
1b) Sloped surface (1'l) on the side facing the rear wall (dorsal side)
The ventral side jet nozzles (4) (4) are attached toward the center of the rear wall.

In addition, a pump protection case (9) is arranged outside the bubble generating bathtub (A), and inside the case (9),
A circulation pump (P) that circulates the bath water and the same pump (,P
); a filter (43) that filters the bath water circulated by the filter;
The pump drive motor that drives the same pump (P) (the old motor, the same motor (M), the motor for driving the valve body for the nozzle (Ml) (described later), the motor for driving the valve body for air bubble ffi adjustment (H2), and the electric A control section (C) that controls driving of the three-way valve (45) is provided.

Moreover, a bath water circulation channel (D) is interposed between the circulation pump (P) and the bubble generating bathtub (A).

That is, the bath water circulation flow path (D) is connected to the bubble generating bathtub (A).
A bath water suction pipe (10) for sending bath water from the circulation pump (P) to the bathtub (A)
Bath water bullet delivery pipe (11,) for sending bath water to,! : It is composed of more.

The bath water suction pipe (10) is connected to the bathtub body (1).
One end is opened at the bottom of the circulation pump (P), and the other end is connected to the water intake port of the circulation pump (P) to suck hot water into the circulation pump (P). (P
), one end of which communicates with the spout of the spout nozzle (2) (3).
) and (4), the other ends of which are connected in communication.

In addition, in Figure 1, (7) is the outlet connected to the power supply,
(30b) is an infrared receiving sensor (8) that receives infrared rays emitted from a remote controller (30), which will be described later.
0c) is the reception indicator lamp installed on the same infrared reception sensor,
(Fl) is a cleaning warning lamp.

In addition, as shown in Figure 3, the circulation pump (P) is equipped with a rotation speed detection sensor (6) that detects the rotation speed of the circulation pump (P), and the detection results from the sensor (6) are , is sent to a control section (C) which will be described later, and the control section (C) controls the rotation speed of the circulation pump (P).

In addition, as shown in Fig. 3, a pressure detection sensor (48) is installed in the middle of the bath water pumping vibrator (11) to detect the pressure of the bath water being pumped through the pipe (11). The detection results from the sensor (48) are manually inputted to the control section (C), which will be described later, and the control section (C) controls each ejection nozzle (2) (3).
) (4) The water level in the bathtub main body (1) is detected as well as the pressure of the bath water ejected from the bathtub body (1).

As shown in Fig. 4, the pressure detection sensor (48) has a diaphragm (48b) stretched in a sensor case (48a), and the negative side of the diaphragm (48b) is connected to the bath water bullet conveying pipe (11). The pressure inside the vibrator (11) is communicated with the other side, and the plunger (48c) is connected to the other side, and the suppressor (48c) is connected to the other side.
48d), the displacement of the diaphragm (48b) is transmitted to the pressurized conductive rubber (48e).

Note that the suppressor (Hld) is biased by a spring (480), so the diaphragm (48b) is displaced to the point where the above pressure and the biasing force of the spring (48r) are balanced. Note that (48g) is an adjustment screw.

As shown in FIG. 5, the pressurized conductive rubber (48e) is configured so that its electrical resistance value changes depending on the amount of deformation of the rubber (48e). )
By detecting the resistance value, it is possible to detect the pressure inside the bath water blast vibrator (11).

In particular, since the differentiation of the resistance value with respect to the amount of deformation changes rapidly with a constant amount of deformation as the threshold value (481), the amount of deformation of the pressurized conductive rubber (48e) at the set pressure is set to the threshold value (481).
481), a switching output can be obtained with a simple circuit.

As mentioned above, this pressure detection sensor (48) is non-contact, eliminating causes of problems such as corrosion of contacts, hysteresis of contact opening/closing, and flat spring fatigue, which were unavoidable with conventional switch-type pressure sensors, and has a long service life. It is possible to perform accurate and stable pressure detection over a long period of time.

The jet nozzles (2), (3), and (4) each use an automatic variable jet nozzle configured to be able to change the jet amount and jet pressure of bath water, and each jet nozzle (2) (3) (4)
Since they have the same configuration, the foot side jet nozzle (2) will be taken as an example and explained with reference to FIG.

The foot side spout nozzle (2) is fitted into a cylindrical nozzle body 20) connected to the foot side spout nozzle connection port (Ig) of the bathtub body (1) and the front part of the nozzle body (20). a valve seat-forming cylinder (21) formed at the rear of the valve seat-forming cylinder (21); a valve element (22) for adjusting the jetting amount that approaches and separates from the rear from the valve seat (21a) formed at the rear of the valve-seat-forming cylinder (21); A nozzle valve advancing/retracting motor (old) that removably supports the regulating valve element (22) and moves it forward and backward, and a throat swingably supported in front of the valve seat forming cylinder (21). (24).

The nozzle body (20) has a gasket (l) on the outer peripheral surface of the front end.
It is removably fixed to the wall surface of the bathtub body (1) by a mounting screw (11) screwed through the nozzle body (20), and one end is attached to the central peripheral wall of the nozzle body (20).
) is connected to the other end of the suction vibrator (12), and a hot water bomb delivery pipe (1) is connected to the rear peripheral wall of the nozzle body (20).

Further, a cylindrical decorative cover (2B) whose front portion is folded outward is fitted onto the front edge of the nozzle body (2G).

The valve seat forming cylinder (21) has a rear end surface located in the vicinity of the bullet feed pipe connecting portion (20c) inside the nozzle body (20).

In addition, a throat support surface (21e) having a substantially concave spherical surface is formed on the front inner circumferential surface of the valve seat forming cylinder (21), so that the throat (24) having a spherical outer circumferential surface at the base can swing freely. It is attached to. (25) is a throat fixing member.

At the center of the rear end of the valve seat forming cylinder (21) is a valve seat (21a).
), and a valve body (2
2) are moved toward and away from each other, so that the amount of opening and closing of the bath water flow passage (27) (adjusting the amount of ejection and the ejection pressure) can be adjusted by the valve body (22) for adjusting the amount of ejection.

The motor (Ml) for driving the nozzle valve body forward and backward is attached to the rear wall (20g) of the nozzle body (20), and is equipped with a coil (23a) and a permanent magnet provided inside the motor casing (23). The rotary shaft of the motor (Ml) is formed into a hollow shaft, and a ball screw (23c) is formed inside the shaft. )
The rotational motion of the valve body (22) is converted into a linear motion in the axial direction, and the ejection amount adjusting valve body (22) is moved forward and backward via the valve body support rod (23d).

(23g) is a rotation regulating piece that prevents the valve body support rod (23d) from rotating with the ball screw (23c), and (22e) is the rear end periphery of the valve body (22) for adjusting the amount of jetting and the jet nozzle. This is a bellows-shaped waterproof cover interposed between the front surface of the rear wall (20g) of the main body (20).

Furthermore, the motor (Ml) for driving the nozzle valve body forward and backward,
A valve body reference position detection sensor (23f) consisting of a magnet (23j) and a Hall element (231) attached to the rear end of the valve body support rod (23d) is installed, and the valve body support rod (23d) moves forward and backward. Hall element that changes according to operation (
231) is converted into an electrical change and inputted to the control unit (C), and the ejection i regulating valve body (22)
The deviation from the reference position is detected.

Next, the air intake section (5) will be explained.

As shown in FIGS. 7 and 8, the air intake section (5) has an air intake section attachment port (1r) on the edge (1a) of the bathtub body (1).
) and open the rectangular box-shaped air bubble inlet main body (8) with an opening on the top.
0), the top opening of the air intake main body (80) is covered with the lid (82), and the air intake (82a) is formed only on the outside of the lid (82). The outside air and the inside of the air bubble entry main body (80) are communicated with each other.

An intake vibe connection part (83) is provided at the center of the bottom of the air bubble inlet main body (80), and one end of the intake vibe (12) (12) is connected to the front and rear walls of the connection part (83), respectively. Air taken into the air bubble entry main body (80) is supplied to each of the ejection nozzles (2), (3), and (4) via each intake vibrator (12) (12).

In addition, inside the air bubble entry main body (80), a sound absorbing material having a sound absorbing function and an air purifying function such as a porous sintered plastic body (for example, a sintered polyethylene body or a sintered polypropylene body) is formed into a cylindrical shape. A plurality of silencers (92) are provided.

An air bubble control valve (87) is provided in the intake vibe connection part (83) to open and close the communication path (86) between the connection part (83) and the intake body (80). The air bubble volume control valve (87) has its upper edge connected to the air bubble entry body (80).
A cylindrical valve body (88) with a communicating opening at the bottom of the valve body (88), and a valve body drive motor for adjusting the amount of air bubbles having the same configuration as the nozzle valve body advancing/retracting motor (Ml) attached to the valve body (88). (Ml), a valve body support rod (89) attached to the motor (Ml), and a valve seat (g) attached to the tip of the rod (89) and formed on the upper edge of the valve body 88
sb) and a valve body (90) that can freely move toward and away from the valve body (90).

A valve position detection sensor (91) having the same configuration as the valve position detection sensor (23'') is disposed in the air bubble amount adjustment valve body drive motor (Ml).

In Fig. 7, (84) beam actance type silencer, (
85) is a check valve for preventing bath water from flowing back into the intake vibe (12).

Next, the circulation pump (P) will be explained.

As shown in FIG. 9, the circulation pump (P) has an upper impeller chamber (33) and a lower impeller chamber (34) connected to each other through a flow path (32d) in the pump casing (32).
The lower impeller chamber (34) is communicated with the bath water suction vibe (10) via a bath water suction path (32a) provided on the lower side of the pump casing (32), and The hot water bullet feed pipe (
11), and one end of a retractable vibe (41) of a filter (43), which will be described later, via a forced filtration passage (32c) provided on the - side of the upper impeller chamber (33). (3Ze) is the water inlet, (32r) is the lower water outlet, (
32g) is the upper spout, (zl) is the circulation flow direction, (z
2) indicates the filtration flow direction.

Then, an impeller shaft (35) is mounted so as to vertically pass through the central part of the upper and lower impeller chambers (33) (34), and the upper impeller (33) is mounted on the impeller shaft (35).
a) and the lower impeller (34a) are installed coaxially within the upper and lower impeller chambers (33) and (34), respectively, and the impeller shaft (35) is integrally mounted on the pump casing (32) in a watertight manner. Pump drive motor (M)
The drive shaft (39) is interlocked with the drive shaft (39).

The pump drive motor (M) is driven by an inverter 1. It is a J-controlled fully enclosed external fan type induction motor, and a rotation speed detection sensor (6) connected to a control section (C) is disposed on the drive shaft (39).

(3B) is a sealing material attached to the impeller shaft (35).

With this configuration, the upper and lower impellers (33a) (34
When a) is rotated, the bath water flows through the bath temperature suction pipe (10) -
Water intake (82e) - Bath water suction path (32a) - Lower inflator chamber (34) - Bath water forced flow path (32b) -> Lower spout (32f') - Via the bath water bullet feed vibe (11) It is sent into the bathtub body (1).

Furthermore, as shown in Fig. 9, a filter (43) is connected to the upper impeller chamber (33) of the circulation pump (P) via a lead-in pipe (41) and a return pipe (42). , upper spout of upper impeller chamber (33) (32g
), a part of the bath water sucked into the lower impeller chamber (34) is sent to the filter (43), and the filtered bath water is filtered by the filter (43). Pass the hot water bullet sending vibe (1) through the return pipe (42).
1) It is sent into the bath water and is made to join with the bath water that is forcibly sent into the bath water bullet feeding vibe (11) from the lower spout (32r) of the lower impeller chamber (34).

Note that (39a) is an armature, (39b) is a field coil, and (39c) is a cooling fan.

Next, the configuration of the filter will be explained.

As shown in Figure 1O, the filter (43) has an acrylic mesh (43b) stretched over the lower part of the filter body (43a), and granular filter material (43c) is placed on the mesh (43b).
) is mounted, and the bath water is passed through the filter material (43c) from above to below the filter body (43a), thereby making it possible to filter the bath water. (4
3d) is a baffle that prevents the upper surface of the granular filter material (43c) from being washed away during bath water filtration, and also prevents the granular filter material (43c) from flowing out during backwashing, which will be described later. be.

The upper end of the filter body (43a) is connected to the lead-in pipe (4).
1) One end is connected in communication, one end of the return pipe (42) is connected in communication with the lower end of the filter main body (43a), and an electric three-way valve (45) is provided in the middle of the lead-in pipe (41). , connect the drainage vibe (46) to one end of the same electric three-way valve (45), and connect the lead-in pipe (4) through the electric three-way valve (45).
1) and the drain pipe (4B) can communicate with each other.

When the electric three-way valve (45) is set in such a state that the drainage vibrator (46) is closed and the lead-in pipe (41) is in flow, a portion of the bath water flows through the lower impeller of the circulation pump (P). Chamber (34) Continuous communication channel (32d) - Upper impeller chamber (33) - Filter pellet feed channel (32c) - Upper water spout (32g) - Sends to the filter (43) via the lead-in pipe (41) filtered, return pipe (42)
through the bathtub body (1) via the bathtub sending vibrator (11).
) joins the bathing water that is forced inside.

In addition, when the electric three-way valve (45) is switched to close the upstream lead-in pipe (41) and communicate the upstream lead-in pipe (41) and the drainage vibe (46), the bath water A part of the bath water in the bullet feed pipe (11) passes through the return pipe (42), passes from the bottom to the top of the filter body (43a), passes through the filter material (43c), and passes through the filter material (43c).
43c) backflow cleaning can be performed.

The switching operation of the electric three-way valve (45) can be performed by a skirt controller (30), which will be described later.

Next, the control section (C) will be explained.

As shown in FIG. 3, the control unit (C) includes a microprocessor (MPU) and an input/output interface (50) (
51), a memory (52) consisting of ROM and RAM, a timer (53), and an integration timer (54) that integrates the operating time of the circulation pump (P).

The input interface (50) includes the rotation speed detection sensor (6), the valve body position sensor (23f'),
A valve position detection sensor (91), a pressure detection sensor (48) that detects the water pressure in the bathtub body (11), an infrared receiving sensor (30b), and a temperature of the bathwater in the bathtub body (1). A bath water temperature detection sensor (T) is connected.

The output interface (51) includes an inverter (1) motor for driving the valve body for the nozzle (old), a motor for driving the valve body for adjusting the amount of air bubbles (M2), an electric three-way valve (45), and an infrared receiving sensor (30b). Cleaning warning lamp (F
l) is connected.

In addition, the memory (52) stores each motor (M) (Ml) (M2), electric three-way valve (45), etc. based on the output signal from each sensor described above and the signal from the remote controller (30). A control program for controlling the drive unit is stored.

In particular, the control of the circulation pump (P) rotation speed is
) is controlled by an inverter (C) controlled by a control unit (C).
1) to convert the frequency and convert the pump drive motor (M)
We are trying to do this by supplying the

In this control section (C), the present invention includes a circulation bomb (
While P) is in operation, the integration timer (54) is turned on to measure the operating time of the circulation pump (P), that is, the cumulative usage time of the filter (43), and when this cumulative time reaches a certain value. Then, a cleaning warning lamp (Fl) provided on the infrared receiving sensor (30b) is turned on to notify the user of this fact and prompt him to clean the filter (43).

In other words, while the filter (43) is filtering bath water, the filter material (43c) gradually becomes clogged and the filtration efficiency decreases. It is closely related to the operating time, and the operating time of the filter (43) installed in the bubble generating bathtub (A) is equal to the operating time of the circulation pump (P). By integrating the operating time, the cumulative operating time of the filter (43) can be measured, and when this cumulative time reaches a certain value, the filtration capacity of the filter (43) increases to that of the filter material (43c). It is assumed that the water level has dropped to a level that requires cleaning, and prompts a backwash operation.

Next, the remote controller (30) for mediating between the control unit (C) and the user will be explained.

As shown in Fig. 11, the remote controller (30) has an ON/OFF switch (60), a mild plow switch (81) which is a preferred jet mode switch, a shiatsu plow switch (62), and a pulse plow switch (
63), pine surge plow switch (64), wave plow switch (65), air pulse plow switch (79), and bubble volume increase/decrease switch (BB) (6
7), bath water spout strength switch (68) (69), cycle increase/decrease switch (70) (71), and all spout nozzle usage pattern switch (72) which is a switch for changing your favorite spout nozzle usage pattern. , circulation usage pattern switch (73), dorsal jet nozzle usage pattern switch (74), foot jet nozzle usage pattern switch (7
5), and ventral jet nozzle usage pattern switch (7B
) and a filter cleaning switch (77).

Then, by turning on the ON/OFF switch (60), the control section (C) is activated.

In addition, (78) is the mK clamp (60a) is the operation indicator lamp, (Eila) (82a) (63a) (64
a) (fi5a) (79a) is each mode switch display lamp, (68a) (87a) is a bubble volume setting lamp, (68a) (89a) is a bath water jet strength setting lamp,
(70a) (71a) are bath water spout cycle setting lamps, (
72a) (73a) (74a) (75a) (76
a) is the jet nozzle usage pattern setting lamp, and (
77a) is a filter cleaning switch indicator lamp.

Moreover, such a remote controller (30)
As shown in the figure, the front end is equipped with an infrared irradiation section (30a), and by operating each switch, a preset multi-frequency tone modulation system (MF
TM), an infrared signal modulated according to the operation of each switch is transmitted from the infrared irradiation section (30a),
The same infrared rays are detected by an infrared receiving sensor (30b) installed in the bathroom.
) (see Figure 1), and is sent to the human interface (50) of the control unit (C) and sent to the memory (50).
A desired drive device is driven based on the control program read from 2).

Moreover, the remote controller (30) is configured to be able to float between the baths, so that the bather can make a bath while taking a bath.

In addition, an infrared receiving sensor (30b) and an air intake part (5)
and can also be configured externally.

With the above configuration, the bubble generating bathtub (A) is controlled by the remote controller (30) that can be operated on the bath water surface, controlling the rotation speed of the circulation pump (P) through the control unit (C), and controlling the rotation speed of the circulation pump (P) and each jet nozzle (2) ( 3) Adjustment of the opening/closing amount and opening/closing speed of the jet m adjustment valve body 22) provided in (4), and the opening/closing amount and opening/closing speed of the air bubble amount adjusting valve (87) provided in the air intake part (5),
It can switch the electric three-way valve (45), adjust the rotation speed of the circulation pump (P), adjust the opening/closing amount and opening/closing speed of the jet m adjustment valve body (22), and the air bubble amount adjustment valve. By adjusting the opening/closing amount and opening/closing speed of (87), and the combination thereof, we have created differences in the amount of bath water spouted from each jet nozzle, the jet pressure, and the amount of air bubbles mixed in. Six types of jet modes (mild Blow Shiatsu Plow, Pulse Plow, Pine Surge Blow Wave Plow, and Air Pulse Plow) can be set, and each jet mode can be set using the favorite jet mode switch (61) provided on the remote controller (30).
) to (65) can be selected by ON/OFF operation.

Moreover, for each mode, there is a bubble volume increase/decrease switch (66) (87), and a bath water spout strength/four side switch (6).
8) (69) and period increase/decrease switch (70) (
71) and by turning them on and off, respectively.
It is possible to increase or decrease the amount of air bubbles, to adjust the strength of the hot water jetting out, and to increase or decrease the period of the hot water jetting out.

Furthermore, by turning ON/OFF each of the selector switches (72) to (76) for the desired jet nozzle usage pattern, it is possible to select the usage pattern of the six jet nozzles to which the jet mode is applied. I have to.

In addition, by turning on the filter cleaning switch (77), the electric three-way valve (45) is operated to perform backflow cleaning of the filter (43), and after a certain period of time in this state, the electric three-way valve (45) is operated. The system is designed to return to the state before backwashing.

In other words, when the filtration type cleaning button (77) of the remote controller (30) is operated, the electric three-way valve (45) performs a switching operation to close the upstream lead-in pipe (41) and close the downstream lead-in pipe. (41) and drainage pipe (4
6), so that the bath water is connected to the bath water bullet conveying pipe (11).
) - Return pipe (42) - Filter main body (43a) - Downstream side lead-in pipe (41) - Electric three-way valve (45) - Drain pipe (46), and at this time, the filter main body (43
a) The water flows from the bottom to the top, and the filtering material (43c) moves due to this water flow, and the filtering material (43c) moves during bath water filtration.
Remove the filter slag that has accumulated on the drain pipe (46) together with the bath water.
can be ejected from the machine.

In addition, a timer is started at the same time as the electric three-way valve (45) is switched, and when the set time of the timer has elapsed, the circulation pump (P) is stopped and the electric three-way valve (45) is returned to its original position to perform backflow cleaning. Terminate it.

In particular, when the cleaning warning lamp (Fl) installed on the infrared receiving sensor (30b) lights up, perform the cleaning operation described in 1 as soon as possible to backwash the filter (43) in a timely manner. This prevents the filter from being used in a state where the filter is clogged and has reduced filtration ability, or from performing cleaning operations more frequently than necessary.

(f) Effects According to the present invention, an integration timer is provided to measure the cumulative time of the bath water spouting operation, and when the cumulative time reaches a certain value, a notification to that effect is provided. The filter can be cleaned in a timely manner, preventing it from being used with reduced filtration capacity due to clogging, and from cleaning more frequently than necessary, ensuring that the filter is always efficient. Can be used in any condition.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a bubble-generating bathtub according to the present invention. FIG. 2 is a plan view of the bubble-generating bathtub. FIG. 3 is an explanatory diagram of the conceptual structure of the bubble-generating bathtub. FIG. 4 is a cross-sectional explanatory diagram of the pressure detection sensor. FIG. 5 is a graph showing the relationship between the amount of deformation of pressurized conductive rubber and the electrical resistance value. FIG. 6 is an enlarged sectional view of the jet nozzle. Figure 7 is a piping diagram of the intake pipe. FIG. 8 is an enlarged sectional view of the air intake section. FIG. 9 is a partially cutaway front view of the pump drive motor and circulation pump. FIG. 10 is a sectional view of the filter. FIG. 11 is a plan view of the remote controller. Air bubble generation Bathtub circulation pump control section Bath water circulation flow path Bath water temperature detection sensor Bathtub body Foot side spout nozzle Back side spout nozzle Vent side spout nozzle Bath water suction pipe Bath water bullet feed pipe Filter machine (48): Pressure detection sensor

Claims (1)

[Claims] 1) A bath water circulation channel consisting of a bath water suction channel and a bath water forced flow channel is interposed between the bathtub body and a circulation pump installed outside the bathtub body. A jet nozzle is provided at the discharge part of the bath water forced flow channel into the bathtub body, and the jet nozzle is configured to be able to jet the bath water mixed with air bubbles into the bathtub body, and a filter is connected to the circulation pump. In the bubble-generating bathtub configured to filter the bathwater flowing through the bathwater circulation flow path, an integration timer is provided to measure the cumulative time of the bath water spouting operation, and when the cumulative time reaches a certain value, A filtration device for a bubble-generating bathtub, characterized in that it is configured to notify this fact.