JPH031868A - Filter apparatus in bubble generating bathtub - Google Patents

Abstract

PURPOSE:To prevent that a strong bubble jet stream is issued from the jet nozzle directed toward the breast or abdomen with a lowering of a water level by closing a part of a plurality of jet nozzles when a filter is washed by allowing bath hot water to flow in a reverse direction. CONSTITUTION:When a filter 43 is washed by allowing bath hot water to flow in a reverse direction, a part of a plurality of the jet nozzles 2, 3, 4 arranged to a bathtub main body 1 is closed. Therefore, it can be prevented that the strong bubble jet streams from the jet nozzles 2, 3, 4 directed toward the breast or abdomen with a lowering of a water level and no strong jet stream pressure is imparted to a bathing person. When backwashing is continuously performed, if the lowering position of the water level is present at a position higher than the position set by a pressure detecting sensor 48 having to stop a recirculation pump P even when the water level is largely lowered, backwashing operation is performed as it is even when the water level is lower than the positions of the jet nozzles 2, 3, 4.

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 feed vibrator 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 the hot water bullet conveying pipe to eject bathwater mixed with bubbles into the bathtub, a pressure detection sensor is disposed in the bathwater forced flow path. It is possible to detect the water ejection pressure of the bath water and the water level of the bath water inside the bathtub body based on the detection value of the sensor, and the ejection of the bath water is controlled according to the water level inside the bathtub body. If it is lower than the
Some devices are designed to stop the jet stream.

On the other hand, a filter is interposed in the bath water circulation flow path to filter and purify the bath water during the bath water circulation, thereby making it possible to enjoy a comfortable bath.

(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.

Such backwashing is generally performed while consuming the remaining hot water in the bathtub body.

In order to improve the backwashing ability, it is possible to use a high-pressure jet of hot water, but if you perform such a backwashing operation while taking a bath, the high-pressure jet will accidentally hit your body, causing discomfort. It is also dangerous for bathers.

Furthermore, increasing the backwashing capacity means that a large amount of bathwater will be discharged in a short period of time.For example, when backwashing 11g of wastewater per minute, it will take approximately 5 minutes to drain a normal bathtub (approx. ~300 fI), approximately one-fifth of the amount of bath water during bathing will be drained out, the water level will drop significantly, the bubble jet will become stronger, and the body will be subjected to an unexpected squeezing jet. It will also happen.

Therefore, during backwashing, it is necessary to prevent or avoid an inadvertent increase in jet pressure due to a drop in water level.

This invention aims to prevent such a risk.

(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, and a plurality of spray nozzles that can be opened and closed are provided at the discharge part of the forced bath water flow channel into the bathtub body, and each spray nozzle blows bath water mixed with air bubbles into the bathtub body. A pressure detection sensor is disposed in the bath water forced flow path, and the pressure of the bath water ejected and the water level of the bath water in the bathtub body can be detected based on the detected value of the sensor. Further, a filter is connected to the circulation pump, the bath water in the bathtub body is passed through the filter in the forward direction to filter the bath water, and the bath water is passed in the reverse direction to filter the same. Filtration in a bubble-generating bathtub configured to wash a machine, in which a plurality of jet nozzles are partially blocked when bath water is circulated in the opposite direction to wash the filter machine. The aim is to provide the equipment.

(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 bathtub (A) includes front and rear walls of a bathtub body (1) formed in a box shape with an opening at the top; On the left and right side walls,
Feet side, dorsal side, and ventral side jet nozzles (2) (2)
(3) (3) (4) A total of six (4) are provided.

The bathtub body (1) has a flange-like edge (la) of a constant width formed on the periphery, and an air intake portion (5) on the edge (la).
), and a transverse V-shaped vertically long recess ob) (lb) is formed approximately in the center of the left and right side walls, and the same four parts (ib) (l
b) On the inclined surface (1°b) 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 a circulation pump (P) that circulates the bath water.
); a filter (43) that filters the bath water circulated by the filter;
Pump drive motor (M) that drives the same pump (P)
), a control unit ( C).

In addition, the circulation pump (P) and the bubble generating bath tff (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 pipe (10) for sending bath water from the circulation pump (P) to the bathtub (A)
It consists of a bath water bullet delivery pipe (11) for sending bath water to.

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) The other end is connected to (4) for communication.

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

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 ejection nozzle (2) (3).
) (4) The water level in the bathtub body (1) is detected as well as the pressure of the bath water spouted out 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 (48d) is biased by a spring (48f), so that the diaphragm (48b) is displaced to the point where the above pressure and the biasing force of the spring (48[') are balanced. become. 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 spout nozzles (2) (3) and (4) use automatic variable spout nozzles configured to be able to change the spout amount and jet pressure of bath water, respectively.
) 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 in communication with the foot side spout nozzle connection port (1g) 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 (1) 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 in communication with the other end of the intake pipe (12), and a bath water bullet feeding vibrator (11) is connected in communication with the rear peripheral wall of the nozzle body (20).

Further, a cylindrical decorative cover (26) 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 a rear end surface located inside the nozzle body (2o) in the vicinity of the tension pipe connecting portion (20c).

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 rotary shaft of the motor (old) is formed into a hollow shaft, and a ball screw (23c) is configured inside the shaft to convert the rotary motion of the motor (Ml) into linear motion in the axial direction, and the valve body support rod (
23d), the ejection amount regulating valve body (22) is moved forward and backward.

(23g) is a rotation regulating piece that prevents the above-mentioned 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 controlling the jet ffi 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 (23r) consisting of a magnet (23j) and a Hall element (23i) 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), 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 section (5) has an air intake section attachment port (If
) and open the rectangular box-shaped air intake body (8
0), the top opening of the air intake body (80) is covered with a lid (82), and the air intake (82a) formed only on the outside of the lid (82) is The outside air is communicated with the inside of the air intake section main body (80) through the air intake section.

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 jet 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) includes a cylindrical valve body (88) whose upper end edge communicates with the bottom of the intake body (80), and the valve body (88).
Motor for driving the valve body for the nozzle (old) installed on the
The motor for driving the valve body for controlling the amount of air bubbles (Ml) with the same configuration as
and the valve body support rod (
89), and a valve body (90) that is attached to the tip of the rod (89) and is movable toward and away from a valve seat (88b) formed on the upper edge of the valve body (88).

A valve position detection sensor (91) having the same configuration as the valve body reference position detection sensor (23r) is disposed in the bubble volume adjusting 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 pipe (12).

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

As shown in FIG. 9, the circulation pump (t) 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). (32e) is the water inlet, (321') is the lower water outlet,
(32g) is the upper spout, (zl) is the circulation flow direction, (
zl) indicates the filtration flow direction.

Then, the impeller shaft (35) is supported 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 mounted integrally and watertightly on the pump casing (32). Pump drive motor (M)
The drive shaft (39) is interlocked with the drive shaft (39).

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

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

With this configuration, the upper and lower impellers (33a) (34
When you rotate a), the bath water will flow through the bath water suction vibe (10) →
Water intake (32e) → Bath water suction path (32a) - Lower inflator chamber (34) - Bath water forced feed path (32b) - Lower spout (
32r) → The bathtub body (1) via the bathtub bullet 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 retraction vibrator (41) and a return vibrator (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 bath water filtered by the filter (43) is returned. Pass through the vibrator (42) and insert the bathing bullet vibrator (1
1) The water is sent into the bath water and is made to join with the bath water that is sent into the bath water bullet delivery pipe (1) from the lower spout (3B) of the lower impeller chamber (34).

Note that (39a) is an armature, (39b) is a field coil, and (398) 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), one end of the retractable vibrator (41) is connected in communication with the upper end of the filter body (43a) on which the granular filter material (43c) is applied during bath water filtration, and the vibrator (41) is returned to the lower end of the filter body (43a). 42) are connected for communication, and the retractable vibe (4
An electric three-way valve (45) is provided in the middle of I), and a drainage vibrator (46) is connected to one end of the electric three-way valve (45).
The retraction vibe (41) and the drainage vibe (4B) are enabled to communicate through the electric three-way valve (45).

Then, connect the electric three-way valve (45) to the drainage vibrator (4B).
When the circulation pump (P) is blocked and the retraction vibrator (41) is set to flow, a part of the bath water flows through the circulation pump (P).
Lower impeller chamber (34) continuous flow path (32d) -
Upper inflator chamber (33) - Forced filtration channel (32c) - Upper spout (32g) -> Sends to filter machine (43) via retraction vibrator (41) and is filtered, then returns to vibrator (42)
), the bathtub body (
1) It joins the bath water that is sent inside.

Furthermore, when the electric three-way valve (45) is switched to close the upstream retraction vibrator (41) and communicate the upstream retraction vibrator (41) and drain vibe (46), the bath A part of the bath water in the hot water bullet sending pipe (11) passes through the return vibrator (42), moves upward from the bottom of the filter body (43a), and passes through the filter material (43e). (
43c), backwashing 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.

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 reference position detection sensor (23r), the valve position detection sensor (91), and the water pressure in the bath water filling vibrator (11). A pressure sensor (48), an infrared receiving sensor (30b), and a bath water temperature detection sensor (T) that detects the temperature of bath water in the bathtub body (1) are connected.

Connected to the output interface (51) are a motor (Ml) for driving the valve body for the inverter (+) nozzle, a motor (M2) for driving the valve body for adjusting the amount of air bubbles, and an electric three-way valve (45).

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 0N-OFF switch (60), a mild plow switch (61) which is a preferred jet mode switch, a shiatsu flow switch (62), and a pulse plow switch (62).
3), pine surge plow switch (64), wave plow switch (65) and air pulse plow switch (
79) and bubble volume increase/decrease switch (66) (B7)
, bath water spout strength switch (68) (89), cycle increase/decrease switch (70) (71), all spout nozzle use pattern switch (72) which is a changeover switch for your favorite spout nozzle usage pattern, circulation Usage pattern switch (73), dorsal jet nozzle usage pattern switch (74L foot jet nozzle usage pattern switch (75)
, a ventral side 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) (84a
) (65a) (79a) indicates each mode switch display lamp, (Sea) (67a) indicates bubble volume setting lamp, (
138a) (69a) is the bath water jet strength setting lamp, (
70a) (71a) are bath water spout cycle setting lamps, (72
a) (73a) (74a) (75a) (78a)
is the jet nozzle usage pattern setting lamp, and (77
a) is the 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.

According to Kosei Joki, the bubble-generating bathtub (^) is controlled by a remote controller (30) that can be operated on the surface of the bathtub, and the rotational speed of the circulation pump (P) and each jet nozzle (2) are controlled via the control unit (C). ) (3) The valve body for adjusting the jet m provided in (4) (
22), the opening/closing amount and opening/closing speed of the bubble volume/control valve (87) provided in the air intake part (5), and the switching operation of the electric three-way valve (45). ,
Adjustment of the rotation speed of the circulation pump (P), adjustment of the opening/closing amount and opening/closing speed of the ejection amount regulating valve body (22), adjustment of the opening/closing amount and opening/closing speed of the bubble amount regulating valve (87), and these Depending on the combination, the amount of bath water spouted from each jet nozzle,
You can set six types of jet modes (mild blow, shiatsu blow, pulse blow, pine surge blow, wave blow, and air pulse blow) with different jet pressures and amounts of air bubbles mixed in, and each jet mode can be controlled with a remote controller (30 ) is the preferred jet mode switch (61
) to (65) can be selected by ON/OFF operation.

Moreover, for each mode, there is a bubble volume increase/decrease switch (13B) (67), and a bath water jet strong/local side switch (
H) (69) and period increase/decrease switches (70) (7
By turning on and off 1), it is possible to increase or decrease the amount of bubbles, adjust the strength of the hot water that spouts, and adjust the period of the hot water that spouts.

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.

Further, by turning on 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 (3o) is operated, the electric three-way valve (45) performs a switching operation to close the upstream retraction vibe (41) and close the downstream retraction pipe (41). ) and drainage vibrator (
46), so the bath water is connected to the bath water bullet sending vibe (1
1) - Return vibrator (42) - Filter body (43a) - Downstream intake pipe (41) - Electric three-way valve (45) - Drain pipe (46).
a) 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 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.

Therefore, the bath water is circulated in the opposite direction to the filter (43).
When cleaning the bathtub, some of the multiple jet nozzles (2), (3), and (4) arranged in the bathtub body (1) are closed. Even if the jet pressure is increased to increase the capacity, or even if backwashing is performed under normal jet pressure conditions, the jet nozzle (2) (3)
A part of (4) will be blocked.

Therefore, it is possible to prevent a strong jet of bubbles from coming out from the jet nozzles (2), (3), and (4) directed toward the chest or membrane as the water level decreases, and strong jet pressure is not applied to the bather.

In addition, if backwashing is performed continuously, even if the water level drops significantly, the lowered position will be higher than the position set by the pressure detection sensor (48) at which the circulation pump (P) should be stopped. If there is, even jet nozzle (2) (3) (4
) Even below the position, the backwashing operation continues as it is, and even in such a state, the jet nozzle (2) (3)
Since a part of (4) (the spout nozzle for the chest or membrane) is blocked, the strong jet flow that accompanies the lowering of the water level is not produced by some of the spout nozzles, so it is safe.

Under these conditions, the water level drops further and the circulation pump (
P) is automatically stopped, but despite the drop in the water level, the jet nozzle on the chest or abdomen is blocked and no strong jet is emitted, so the bather Because it is safe for water, drain the water for backwashing until the water level at which the circulation pump (P) stops, and thoroughly drain the bubble bath (
A) It is possible to take a bath.

(f) Effects In the present invention, when the bath water is circulated in the opposite direction to clean the filter, some of the jet nozzles among the plurality of jet nozzles arranged in the bathtub body are closed. Therefore, even if the jet pressure is increased to improve the backwashing ability, or even if backwashing is performed under normal jet pressure conditions, a part of the ejection nozzle will be blocked.

Therefore, it is possible to prevent a strong jet of bubbles from coming out from the jet nozzle directed toward the chest or membrane as the water level falls, and no strong jet pressure is applied to the bather.

In addition, when backwashing is performed continuously, even if the water level drops significantly, if the drop position is higher than the position set by the pressure sensor at which the circulation pump should be stopped, even if the jet nozzle position The backwashing operation continues even further down, and even in such a state, some of the jetting nozzles (the jetting nozzles for the chest or membrane) are blocked, so
It is safe because some jet nozzles do not generate strong jets as the water level falls.

In this state, the circulation pump automatically stops only when the water level drops further, but even though the water level drops, the jet nozzles on the chest or belly are blocked and a strong jet is generated. Since no water is emitted, it is safe for bathers, and it has the effect that it is possible to sufficiently bathe in the bubble bath while draining water for backwashing until the water level at which the circulation pump stops.

[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 vibe. 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. (A): Bubble generation bathtub (P): Circulation pump (C) Two control parts (D) (lO) Bath water circulation flow path Bathtub body Leg side spout nozzle Back spout nozzle Ventral spout nozzle Bath water suction vibrator Bath water Bullet-feeding vibrator filtration machine 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 plurality of spray nozzles that can be opened and closed are provided at the discharge portion of the bath water forced flow path into the bathtub body, and each spray nozzle is configured to be able to spray bubble-mixed bath water into the bathtub body; A pressure detection sensor is disposed in the hot water forced flow passage, and the pressure detection sensor is configured to be able to detect the ejection pressure of the bath water and the water level of the bath water in the bathtub body based on the detection value of the sensor. A bubble configured to communicate with a filter, flow bath water in the bathtub main body through the filter in a forward direction to filter the bath water, and flow the bath water in a reverse direction to wash the filter. A filtration device for a bubble-generating bathtub, comprising: a plurality of jet nozzles partially blocked when bath water is circulated in the opposite direction to wash a filter in the bubble-generating bathtub.