JPH031866A - Filter apparatus in bubble generating bathtub - Google Patents

Abstract

PURPOSE:To perform backwashing at a proper time by a method wherein a pressure detecting sensor or a flow rate sensor is provided to either one of a suction pipe feeding bath hot water in a filter and a return pipe returning bath hot water to a bath hot water recirculation flow passage from the filter and, when the detection value of said sensor becomes lower than a definite value, this effect is informed. CONSTITUTION:A filter 43 is allowed to communicate with the recirculation pump P arranged to the outside of a bathtub main body 1 to filter the bath hot water flowing through a bath hot water recirculation flow passage D. A pressure detecting sensor 48 or a flow rate sensor F is provided to either one of a suction pipe 41 feeding bath hot water in the filter 43 and a return pipe 11 returning bath hot water to the bath hot water recirculation flow passage D from the filter 43 and, when the detection value of said sensor becomes lower than a definite value, a washing warning lamp F1 is allowed to light to urge the backwashing operation of a filter material 43c. By this constitution, the use of an inefficient filter used in a state lowered in filtering capacity because of the clogging of the filter material 43c or subjected to washing operation at necessary frequency or more can be prevented.

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 bullet delivery pipe was interposed between the bathtub body and a circulation pump installed outside the bathtub body. In a bubble-generating bathtub in which an air intake part is provided in the middle of a hot water supply pipe to spray bubble-mixed bathwater into the bathtub, a filter is connected to the bathwater circulation flow path to purify the bathwater. There is something I did.

(c) Problems to be solved by the invention However, as a filter is used, the filter material gradually becomes clogged and the filtration ability decreases.
It is necessary to perform cleaning operations such as backwashing in a timely manner.

However, since there is no means to notify the user of the clogged condition of the filter, the filter may be used with the filter clogged and its filtration capacity reduced, or it may be washed more frequently than necessary. The drawback was that it required manual operation and in any case inefficient use.

(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. The hot water circulation flow path is energized, a jet nozzle is provided at the discharge portion of the bath water forced flow path into the bathtub body, and the jet nozzle is configured to be able to jet bathwater mixed with air bubbles into the bathtub body. , a filter is communicated with the circulation pump,
In a bubble-generating bathtub configured to filter bathwater flowing through a bathwater circulation channel, a lead-in pipe that sends bathwater to a filter or returns bathwater from a filter to a bathwater circulation channel. A pressure detection sensor or a flow rate sensor is provided on either of the return vibrators, and the detection value of the sensor is lower than a certain value.
It is an object of the present invention to provide a filtration device for a bubble-generating bathtub, which is characterized in that it is configured to notify this fact when the bubble generation occurs.

(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 TFI (A) is the front and rear walls of a bathtub body (1) formed in a box shape with an opening at the top. And on the left and right side walls, there are jet nozzles (2) on the foot side, dorsal side, and ventral side, respectively (
2) (3) (3) (4) A total of six (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 long parts (1b) (1b) with a substantially V-shaped cross section are formed approximately in the center of the left and right side walls, and the same four parts (1b) (1
b) On the inclined surface (1°b) facing the rear wall (dorsal side),
The ventral side jet nozzle (4) (4) is attached toward the center of the rear wall.

In addition, such a bubble-generating bath t! A pump protection case (9) is installed outside of (A), and inside the case (9) are a circulation pump CP') that circulates bath water, and a pump (CP') that circulates the bath water.
A filter (43) that filters the bath water circulated by the pump (P), and a pump drive motor (43) that drives the pump (P).
M), a control unit that controls the drive of the same motor (M), a motor (Ml) for driving the nozzle valve body forward and backward, a motor (M2) for driving the valve body for adjusting bubble m, and an electric three-way valve (45), which will be described later. (C).

In addition, the above circulation pump (P) and the bubble generating bath 1ff (A)
A bath water circulation flow path (D) is interposed between the two.

That is, the bath water circulation flow path (D) is connected to the bubble generating bathtub (A).
A bath water suction vibrator (10) for sending bath water from the circulation pump (P) to the circulation pump <p>, and the bath water +ff1 from the circulation pump <p>.
It consists of a bath water blast vibrator (11) for sending bath water to (A).

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 communicated with the water intake port of the circulation pump (P) so that bath water is sucked into the circulation pump (P). (P
), one end of which communicates with the spout of the nozzle (2).
(3) The other end is connected to (4) for communication.

In addition, in Figure 1, (A) is the outlet connected to the power supply,
(30b) is an infrared receiving sensor that receives infrared rays emitted from a remote controller (30) to 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) for detecting the pressure of the bath water being pumped through the vibrator (11) is installed in the middle of the bath water bullet conveying pipe (11). The detection results from the sensor (48) are input to the control section (C), which will be described later, and the control section (C) controls each Futa nozzle (2) (3
) (4) The water level in the bathtub body (1) is detected while exceeding the pressure of the bath water ejected from the bathtub body (1) by t.

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 attached to the hot water bomb feeding vibe (11). A plunger (48c) is connected to the other side, and the displacement of the diaphragm (48b) is controlled by the pressurized conductive rubber (48e) via the suppressor (48d). ).

Note that the suppressor (48d) is biased by a spring <48r), and therefore the diaphragm (48b) is displaced to the point where the above pressure and the biasing force of the spring (48f') are balanced. Become.

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 the causes of problems such as contact corrosion4, hysteresis of contact opening/closing, and flat spring fatigue, which were unavoidable with conventional switch-type pressure sensors. It has a long life and can perform accurate and stable pressure detection.

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 jet nozzle (2) is a cylindrical nozzle body (
20), a valve seat forming cylinder (21) fitted into the front part of the nozzle body 20), and a valve seat (21a) formed at the rear of the valve seat forming cylinder 21) from the rear. A valve body (22) for adjusting the jetting amount that approaches and separates, a motor (old) for driving the valve disc for a nozzle that removably supports the valve disc (22) for adjusting the jetting amount and moves it forward and backward, and the valve seat. It consists of a throat (24) swingably supported in front of a forming cylinder (21).

The nozzle body (20) has a gasket (1
It is removably fixed to the wall surface of the bath 10 body (1) by a mounting screw (11) screwed through the nozzle body (1), and one end is attached to the central peripheral wall of the nozzle body (20).
The other end of the suction pipe (12) connected to the nozzle body (20) is connected to the other end of the suction pipe (12), and a bath water bullet feeding vibe (11) 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 into the front edge of the nozzle body 20).

The valve seat-forming cylindrical body (21) has its rear end surface located in the vicinity of the bullet-feeding vibe connecting portion (20c) inside the nozzle body 20).

In addition, a throat support surface (21c) having a substantially concave spherical surface is formed on the front inner peripheral surface of the valve seat forming cylinder (21), so that the throat (24) having a spherical outer peripheral 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 (old) for driving the nozzle valve body forward and backward is attached to the rear wall (20g) of the nozzle body (20), and has a coil (23a) and a permanent magnet installed inside the motor casing (23). It is configured to perform stepping operation with the armature (23b), and the motor (23b) is configured to perform stepping operation.
The rotating shaft of the motor (Hl) is formed into a hollow shaft, and a ball screw (23C) is configured inside the shaft to convert the rotational motion of the same motor (old) into linear motion in the axial direction, and the valve body support rod (
23d), the jet filtg valve body (22) is moved forward and backward.

(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 (old) for driving the nozzle valve body forward and backward is equipped with a magnet (
A valve body base position detection sensor (23f') consisting of a Hall element (23j) and a Hall element (231) is installed.
231) is converted into an electrical change and manually inputted to the control unit (C), which controls the ejection amount adjusting 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 portion (5) has an air intake port (1r) on the edge (1a) of the bathtub body (1).
) and open the rectangular box-shaped air intake body (8
0), the top opening of the air intake main body (80) is covered with the lid (82), and the air intake port (82a) formed only on the outside of the lid (82) is inserted. This communicates the outside air with the inside of the air intake unit body (80).

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

In addition, inside the air intake body (80), a cylindrical 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, a sintered polypropylene body) is used. A plurality of silencers (92) are provided.

An air bubble amount adjusting valve (87) is provided in the intake pipe connecting portion (83) to open and close a communication path (86) between the connecting portion (83) and the intake body (80). The amount control valve (87) has a cylindrical valve body (88) whose upper end edge communicates with the bottom of the air intake body (80), and a valve body (88).
8) The motor for driving the valve body for the nozzle (
A motor for driving the valve body for adjusting the amount of air bubbles with the same configuration as Ml)
(82), the valve body support tip (89) attached to the same motor (M2), and the valve seat (88b) attached to the tip of the same rod (89) and formed on the upper edge of the valve body (88). It is composed of a valve body 90) which can be freely moved towards and away from the valve body.

A valve position detection sensor (91) having the same configuration as the valve body reference position detection sensor (23f') is disposed in the bubble volume adjustment valve body drive motor (M2).

In Fig. 7, (84) is a V-actance type silencer, (
85) is a reverse valve for preventing bath water from flowing back into the intake pipe (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 pipe (10) via the bath water suction passage (32a) provided on the lower side of the pump casing (32), and The bath water bullet feed pipe (
11), and one end of a lead-in pipe (41) of a filter (43), which will be described later, via a forced filtration passage (32c) provided on one side of the upper impeller chamber (33). (32e) 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, the impeller shaft (35) is supported so as to vertically penetrate the central part of the upper and lower impeller chambers (33) and (34), and the upper impeller (33a) is mounted on the impeller shaft (35).
) and a lower impeller (34a) are installed coaxially within the upper and lower impeller chambers (33) and (34), respectively, and the impeller shaft (35) is mounted on the pump casing (32) in an integral and watertight manner. Drive motor ()1)
The drive shaft (39) is interlocked with the drive shaft (39).

The pump drive motor () 1) is an inverter-controlled fully enclosed external fan-type induction motor, and the drive shaft (39) is equipped with a control section (
A rotation speed detection sensor (6) connected to C) is provided.

(36) 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 water suction pipe (10) -
Water intake (32e) - Bath water suction passage (32a) - Lower impeller chamber (34) - Bath water supply passage (32b) - Lower spout (
32r) - The bathtub body (1) via the bathtub sending vibrator (11)
).

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) <82g
), a part of the bath water sucked into the lower impeller chamber (34) is sent to the filter (43), and the bath water filtered by the filter (43) is returned. Pass the bathing bullet sending vibe (I) through the pipe (42).
L), and is made to join the bath water forced into the bath water bullet delivery pipe (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 FIG. 10, the filter (43) has an acrylic mesh (43b) stretched on the lower part of the filter body (43a), and a 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. (43
In d), the upper surface of the granular filter material (43c) is washed during bath water filtration. This is a baffle for preventing the granular filter material (43c) from flowing out during backwashing, which will be described later.

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 (46) can communicate with each other.

When the electric three-way valve (45) is set in such a state that the drain pipe (46) is blocked and the lead-in pipe (41) is in flow, a portion of the bath water is transferred to the lower impeller of the circulation pump (P). Chamber (34) Series of 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) It is filtered, passes through the return pipe (42), passes through the bath water bullet sending vibe (11), and then returns to the bathtub body (1).
It joins the bath 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 drain pipe (4B), 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 remote controller (30), which will be described later.

In such a filter (43), a lead-in pipe (41)
A flow rate sensor (F) is installed in the middle of the flow rate sensor (P).
) is input to the control unit (C), and when this detected value falls below a certain value, the infrared receiving sensor (31
) The cleaning warning lamp (pi) provided in b) is lit to prompt the backwashing operation of the filter material (43c).

In other words, when the filter material (43c) becomes contaminated with filter slag while filtering bath water, the filter material (43c) becomes progressively more clogged, resistance increases, and the flow rate gradually decreases.

Therefore, clogging of the filter material (43c) can be detected from the decrease in the flow rate, and if a backwash operation is performed when the flow rate has decreased below a certain limit, the filter material (43c) can be detected in a timely manner.
3c), the filter material (43c) is clogged and the filtering capacity is reduced, and the filtering material (43c) is clogged, resulting in inefficient use of the filter (43c) or cleaning more frequently than necessary. ), and the filter (43) can always be used in an efficient manner.

The above-mentioned flow rate sensor (F) includes one in which a propeller is installed in the flow path of the lead-in pipe (41) and the flow rate is detected from the rotational speed of the propeller, or one in which a throttle part is installed in the flow path. 1. There are devices that detect the flow rate from the differential pressure between the upstream side and the downstream side of the constriction part, and the point is that the flow rate of bath water passing through the filter (43) is detected when the filter material (43c) is clogged. Any device that can detect with sufficient accuracy is sufficient.

Further, the flow rate of bath water flowing through the lead-in pipe (41) and the flow rate of bath water flowing through the return pipe (42) are equal to each other.
Therefore, even if the flow rate sensor (F) is provided in the return pipe (42), the same effect as described above can be obtained.

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, and a timer (53).

The input interface (50) detects the rotation speed detection sensor (6), the valve body base position detection sensor (23r), the valve position detection sensor (91), and the water pressure in the bath water bullet delivery pipe (11). a pressure detection sensor (48), an infrared receiving sensor (30b), a bath water temperature detection sensor (T) and a flow rate sensor (T) that detect the temperature of the bath water in the bath body (1).
F) is connected.

The output interface (51) includes an inverter (+),
Connect the motor for driving the valve body for the nozzle (Ml), the motor for driving the valve body for adjusting the amount of air bubbles (M2), the electric three-way valve (45), and the cleaning warning lamp (Fl) provided on the infrared receiving sensor (30b). ing.

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

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 (61) which is a preferred jet mode switch,
Shiatsu plow switch (62), pulse plow switch
(63), pine surge plow switch (64), wave plow switch (65), air pulse plow switch (79), and bubble volume increase/decrease switch (8B) (8
7), bath water spout strength switch (88) (69),
Periodic increase/decrease switch (70) (71), switch for all jet nozzles usage pattern switch (72), circulation usage pattern switch (73), and dorsal jet nozzle usage pattern switch (72) for changing your favorite jet nozzle usage pattern (74), foot side jet nozzle usage pattern switch (7
5), and ventral jet nozzle usage pattern switch (76
) 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 a power lamp, (60a) is an operation indicator lamp, (61a) (62a) (63a) (64a
) (65a) (79a) is each mode switch display lamp, (66a) ([t7a) is bubble volume setting lamp,
(68a) ([19a) is a bath water jet strength setting lamp,
(70a) (71a) are bath water spout cycle setting lamps, (γ
2a) (73a) (74a) (75a) (76a
) is the jet nozzle usage pattern setting lamp, and (7
7a) 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), is sent to the input interface (50) of the control unit (C), and is sent to the memory (50).
A desired drive device is driven based on the control program read from 2).

Furthermore, the remote controller (30) is constructed so that it can float on the surface of the bath water, so that it can be operated by a bather 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 bath If! (A) is controlled by a remote controller (30) that can be operated on the bath surface.
The control unit (C) controls the rotation speed of the circulation pump (P), the opening/closing amount and opening/closing speed of the jet volume regulating valve body (22) provided in each jet nozzle (2) (3) (4), and the air intake. Joining the club (5)
It is possible to adjust the opening/closing amount and opening/closing speed of the bubble volume control valve (87) provided in the air bubble volume control valve (87), and to switch the electric three-way valve (45). By adjusting the opening/closing amount and opening/closing speed of the valve body (22), adjusting the opening/closing amount and opening/closing speed of the air bubble amount control valve (87), and the combination thereof, the amount and amount of bath water spouted from each jet nozzle can be adjusted. 6￥'f:L with different pressure and amount of air bubbles mixed in
Various jet modes (mild blow, pressure blow, pulse blow, pine surge blow, wave blow, and air pulse blow) can be set, and each jet mode can be set with a favorite jet mode switch (61) provided on the remote controller (30). (65) can be selected by turning ON/OFF.

Moreover, for each mode, there are bubble volume increase/decrease switches (813) (87), and bath water spout strong/east side switch (6).
fl) (69) and period increase/decrease switch (7G)
By turning on and off (71), it is possible to increase or decrease the amount of bubbles, adjust the intensity of the hot water spout, and adjust the period of the hot water spout.

Furthermore, by turning ON/OFF each selector switch (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.

Further, by turning on and off the filter cleaning switch (77), an electric three-way valve (45) is operated to perform backflow cleaning of the filter (43).

That is, when the filter cleaning switch (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 vibe (
46), so that the bath water is connected to the bath water bullet conveying pipe (1
1) - Return pipe (42) - Filter main body (43a) - Downstream lead-in pipe (41) → Electric three-way valve (45) -
The water flows through the drain pipe (46) in this order, and at this time, the filter body (4
3a) The water flows inside 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 vibrator (46) together with the bath water.
) can be discharged outside 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 notice lamp (Fl) provided on the infrared receiving sensor (30b) lights up, by performing the above cleaning operation as soon as possible, you can prevent the filter from becoming clogged and reducing its filtration capacity. This prevents them from being used as they are or from being washed more frequently than necessary.

(f) Effects According to the present invention, a flow rate sensor is provided in either the lead-in pipe that sends bath water to the filter or the return pipe that returns bath water from the filter to the bath water circulation flow path. By configuring the system to notify you when the detected value of the flow rate sensor falls below a certain value, the filter can be cleaned in a timely manner and the filter can be used in an efficient manner at all times. be able to.

[Brief explanation of drawings]

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 bath tff. 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. :Bubble generating bathtub:Circulation pump:Control partBath water circulation flow pathBath water temperature detection sensorBathtub bodyFoot side spout nozzleDorsal side spout nozzleVentral side spout nozzleBath water suction pipeBath water bullet feed vibratorPressure detection sensor

Claims (1)

[Claims] 1) A bath water circulation flow path consisting of a bath water suction flow path and a bath water forced flow path is interposed between the bathtub body and a circulation pump installed outside the bathtub body, and a bath water forced flow flow path is provided. A jet nozzle is provided at the discharge part of the passageway into the bathtub body, and the jet nozzle is configured to be able to jet bubble-mixed bath water into the bathtub body, and a filter is connected to the circulation pump to circulate the bath water. In a bubble-generating bathtub configured to filter bathwater flowing through a flow path,
A compression detection sensor or a flow rate sensor is installed in either the lead-in pipe that sends bath water to the filter, or the return pipe that returns bath water from the filter to the bath water circulation flow path, and the sensor detects the flow rate. 1. A filtration device for a bubble-generating bathtub, characterized in that the filtration device is configured to notify when the value falls below a certain value.