JP2855642B2 - Bathtub water circulation device - Google Patents

Description

The present invention relates to a bath tub water circulation device.

(B) Conventional technology Conventionally, a hot-water circulation path comprising a hot-water suction pipe and a hot-water bath is provided between a bathtub main body and a circulation pump installed outside the bathtub main body. An air intake section is provided in the middle of the hot water supply pipe, and in a bubble generation bathtub as a bathtub water circulation device in which bubbles are mixed into the bathtub and the bathwater is jetted out, a filter is connected to a bathwater circulation flow path, and a bath is formed. There is an apparatus for purifying hot water, and such a filter is provided with an air vent pipe for discharging air bubbles mixed in the hot water and excessively supplied hot water.

(C) Problems to be Solved by the Invention However, the separation of the hot water from the air bubbles is not sufficient, and air bubbles are mixed in the hot water passing through the filtering material, causing pulsation and impairing the accuracy of the filtration. However, there was a drawback in that the filter material flew up and flowed out of the machine together with excess bath water from the air vent pipe.

(D) Means for Solving the Problems The present invention provides a bath water circulation flow comprising a bathtub body, a circulation pump, a bathwater suction flow path and a bathwater high-pressure flow path communicating the bathtub body and the circulation pump. A bath, a filter connected in communication with the bath water circulation flow path, and a jet nozzle provided in the bathtub main body, wherein the bathtub water circulation device is capable of jetting bathwater containing air bubbles into the bathtub main body. And a swirling flow generating means for generating a swirling flow in the bath water flowing into the bathtub.

The present invention is also characterized in that a flow straightening means is provided downstream of the swirling flow generating means of the filter and upstream of the filtering medium.

(E) Example Hereinafter, a bubble generating bathtub as a bathtub water circulation device according to the present invention will be described in detail with reference to the accompanying drawings.

First, the overall configuration of the bubble generating bath according to the present invention will be described.

(A) shown in FIG. 1 and FIG. 2 is a bubble generation bathtub according to the present invention. The bubble generation bathtub (A) includes a front and rear wall of a bathtub body (1) formed in a box shape having an upper surface opening. Foot side, back side, and ventral side jet nozzles on the left and right side walls (2) (2)
(3) (3) (4) (4) are provided in total of six.

The bathtub body (1) has a flange-shaped edge (1a) having a constant width at the periphery, and the air intake section (5) is formed at the edge (1a).
Are formed at substantially central portions of the left and right side walls, and have vertically elongated recesses (1b) and (1b) each having a substantially V-shaped cross section, and the recesses (1b) and (1b) on the side facing the rear wall (back side). The ventral ejection nozzles (4) and (4) are attached to the inclined surface (1'b) toward the center of the rear wall.

Further, a pump protection case (9) is provided outside the bubble generation bathtub (A). Inside the case (9), a circulation pump (P) for circulating bath water and a pump (P) are provided. Filter (43) for filtering the bath water circulated by P)
A pump driving motor (M) for driving the pump (P); a motor (M1) for driving the pump (P); ) And a control unit (C) for controlling the driving of the electric three-way valve (45).

Further, a bath water circulation path (D) is interposed between the circulation pump (P) and the bubble generation bath (A).

That is, the bath water circulation flow path (D) includes a bath water suction pipe (10) for sending bath water from the bubble generation bath tank (A) to the circulation pump (P), and the bath pump circulation pipe (P). It is composed of a hot water bath pipe (11) for sending hot water to (A).

And the bath water suction pipe (10) is the bathtub body (1)
One end is opened at the lower part of the pump, and the other end is connected to the water suction port of the circulation pump (P) so that the bath water is sucked into the circulation pump (P). (P)
One end is connected to the water outlet of the nozzle, and the jet nozzles (2) and (3)
The other ends are connected and connected to (4).

In FIG. 1, (7) is an outlet connected to a power source, (30b) is an infrared receiving sensor for receiving infrared rays transmitted from a remote controller (30) described later, and (30b).
c) is a reception indicator lamp provided in the infrared sensor.

Also, as shown in FIG. 3, the circulation pump (P)
A rotation speed detection sensor (6) for detecting the rotation speed of the circulation pump (P) is attached, and the detection result from the sensor (6) is
It is sent to a control unit (C) described later, and the control unit (C)
The number of rotations of the circulation pump (P) is controlled.

Further, as shown in FIG. 3, a pressure sensor (48) for detecting the pressure of the bath water pumped through the pipe (11) is attached to the middle part of the bath hot water pipe (11). The detection result from (48) is input to a control unit (C) to be described later, and the control unit (C) detects the ejection pressure of the bath water ejected from each ejection nozzle (2) (3) (4). At the same time, the water level in the bathtub body (1) is detected.

As shown in FIG. 4, the pressure detection sensor (48) has a diaphragm (48b) made of a semiconductor material stretched in a sensor case (48a), and one surface of the diaphragm (48b) is connected to a hot water supply pipe ( The diaphragm (48b) is distorted by receiving the pressure in the pipe (11) by communicating with the pipe (11).

The diaphragm (48b) is made of a semiconductor in which impurities are diffused, and as shown in FIG. 5, the diaphragm (48b)
Has a bridge (48d) composed of four strain gauges (48c) having different resistance values depending on strain.

Therefore, when a constant current is passed through the bridge (48d), the diaphragm (48b) is distorted due to pressure fluctuations, and when the resistance value of the strain gauge (48c) changes, the output voltage of the bridge (48d) changes. In other words, the pressure can be detected by calculating backward from this output voltage.

The output voltage is increased by connecting four strain gauges (48c) with a Wheatstone bridge.

In the figure, (48e) is a thick film resistor for temperature compensation built on the diaphragm (48b).

(48f) is a constant voltage circuit, (48g) is a voltage-current conversion circuit that allows a constant current to flow through the bridge (48d) using the constant voltage of the constant voltage circuit (48f), and (48h) is a bridge. (48d) is a differential amplifier for amplifying the output voltage at a constant amplification factor, and (48i) is an amplifier for adjusting the level with the control device (C) connected to the output terminal (48j).

The output of the pressure detection sensor (48) is AD-converted and input to the control unit (C) described later, whereby the pressure is detected in an extremely large number of stages (to a degree that can be regarded as a continuous amount in practical use). The water level in the bathtub body (1) and the discharge pressure of the circulation pump (P) are detected.

That is, when the circulation pump (P) is stopped, the pressure detected by the pressure detection sensor (48) indicates the head of the bath water level in the bathtub body (1), and the circulation pump (P) ) Is operating, the pressure detected by the pressure detection sensor (48) indicates the sum of the head at the water level and the discharge head of the circulation pump (P). Since the difference between the head and the head at the water level is extremely large, it can be regarded as a discharge head of the circulation pump (P) in practical use.

As described above, this pressure detection sensor (48) is a non-contact type, eliminating the problems of contact corrosion, contact opening / closing hysteresis, leaf spring set, etc., which were inevitable with the conventional switch type pressure sensor, and the service life. Is long, and accurate and stable pressure detection can be performed.

The jet nozzles (2), (3), and (4) use automatic variable jet nozzles that can change the jet amount and jet pressure of the bath water, respectively, and each jet nozzle (2), (3), (4). Have the same configuration, the foot-side jet nozzle (2) will be described as an example with reference to FIG.

The foot-side jet nozzle (2) fits into the cylindrical nozzle body (20) connected to the foot-side jet nozzle connection port (1g) of the bathtub body (1) and the front part inside the nozzle body (20). The valve seat forming cylinder (21), the valve seat (21a) formed at the rear part of the valve seat forming cylinder (21), and the valve body (22) for adjusting the amount of jetting that comes into contact with and separates from the rear. Nozzle valve body drive motor (M1) for detachably supporting and reciprocating the adjustment valve element (22), and a throat which is swingably supported in front of the valve seat forming cylinder (21). (24).

The nozzle body (20) has a gasket (1
h), is detachably fixed to the wall surface of the bathtub body (1) by a mounting screw (1i) screwed through, and one end of the air intake section (5) is attached to a central peripheral wall of the nozzle body (20). )
The other end of the intake pipe (12) connected to the
On the rear peripheral wall of the nozzle body (20),
1) is connected and connected.

A cylindrical decorative cover (26) having a front portion turned outward is fitted and attached to the front end edge of the nozzle body (20).

The valve seat forming cylinder (21) has a rear end face located in the vicinity of the high-feed pipe 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 inner peripheral surface of the front portion of the valve seat forming cylinder (21), and the throat (24) having the outer peripheral surface of the base formed into a spherical shape can be swung. Has been fitted. (25) is a throat fixing member.

In the center of the rear end of the valve seat forming cylinder (21), a valve seat (21a)
The valve body (22) for adjusting the ejection amount is brought into contact with and separated from the valve seat (21a), and the opening / closing amount (the ejection amount) of the bath water flow passage (27) is controlled by the valve member (22) for adjusting the ejection amount. And adjust the ejection pressure).

The motor (M1) for driving the nozzle valve forward and backward is mounted on the rear wall (20g) of the nozzle body (20), and has a coil (23a) and a permanent magnet provided in the motor casing (23). The motor (M1) is configured to perform a stepping operation with the armature (23b). The rotation shaft of the motor (M1) is formed as a hollow shaft, and a ball screw (23c) is formed therein. ) Is converted into a linear motion in the axial direction, and the ejection amount adjusting valve element (22) is moved forward and backward through the valve element support rod (23d).

(23g) is a rotation restricting piece for preventing the valve body support rod (23d) from swaying with the ball screw (23c). (22e) is a peripheral edge of a rear end edge of the ejection amount adjusting valve body (22).
A bellows-shaped waterproof cover made of a synthetic resin material such as polytetrafluoroethylene or nylon 11 integrally formed with the valve body (22).

In addition, the motor (M1) for driving the nozzle valve
The magnet (2) attached to the rear end of the valve support rod (23d)
3j) and a valve element reference position detection sensor (23f) consisting of a Hall element (23i), and the magnetic flux passing through the Hall element (23i) that changes according to the advance / retreat operation of the valve element support rod (23d) Control unit (C) that converts the change in density into an electrical change
To detect the deviation of the ejection amount adjusting valve body (22) from the reference position.

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

As shown in FIGS. 7 and 8, the air intake section (5)
Air inlet fitting (1f) at the edge (1a) of the bathtub body (1)
With a rectangular box-shaped air intake unit with a top opening (80)
The upper surface opening of the air intake unit body (80) is covered with a lid (82), and the air is introduced to the outside air through an air intake (82a) formed only outside the lid (82). It communicates with the inside of the air intake section main body (80).

An intake pipe connecting part (83) is provided at the center of the bottom surface of the air intake part body (80), and one end of each of the intake pipes (12) and (12) communicates with the front and rear walls of the connecting part (83). The air that has been connected and taken into the air intake unit body (80) is blown out through the respective suction pipes (12) and (12) through the respective jet nozzles (2) and (3).
(4).

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

In the intake pipe connection part (83), there is provided a bubble amount control valve (87) for opening and closing a communication path (86) between the connection part (83) and the intake part body (80). Volume control valve (87)
Is the same as the cylindrical valve body (88) with its upper edge communicating with the bottom of the inlet section body (80) and the motor (M1) for driving the nozzle valve body reciprocating drive attached to the valve body (88). The valve body drive motor (M2) for adjusting the amount of air bubbles, the valve body support rod (89) attached to the motor (M2), and the tip of the rod (89) are attached to the valve body (88). A valve body (90) that can freely contact and separate from a valve seat (88b) formed at the upper end edge.

A valve position detection sensor having the same configuration as that of the valve position detection sensor (23f) is provided in the valve volume driving motor (M2) for adjusting the amount of air bubbles.

In FIG. 7, (84) is a reactance 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 described.

As shown in FIG. 9, the circulation pump (P) communicates the upper impeller chamber (33) and the lower impeller chamber (34) in the pump casing (32) via the interlocking flow path (32d). The lower impeller chamber (34) communicates with a hot water suction pipe (10) through a hot water suction passage (32a) provided on one side of a lower portion of the pump casing lower portion (32). (32) is communicated with a hot water bath pipe (11) through a hot water bath (32b) provided on the other side of the lower part, and is provided with a filtration strong water path (1) provided on one side of the upper impeller chamber (33). Through 32c), it communicates with one end of a suction pipe (41) of a filter (43) described later. (32e) is the water intake,
(32f) indicates the lower outlet, (32g) indicates the upper outlet, (z1) indicates the circulating flow direction, and (z2) indicates the filtration flow direction.

Then, the impeller shaft (35) is suspended from the upper and lower impeller chambers (33) and (34) so as to penetrate the center vertically.
The upper impeller (33a) and the lower impeller (34a) are respectively mounted on the upper and lower impeller chambers (3) on the impeller shaft (35).
3) Mounted coaxially in (34), and linked the impeller shaft (35) to the drive shaft (39) of the pump drive motor (M) mounted integrally and watertightly on the pump casing (32). Has been established.

The pump drive motor (M) is a fully-closed fan-type induction motor controlled by an inverter (I) described later, and a rotation speed detection sensor (6) connected to the control unit (C) on the drive shaft (39). Is arranged.

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

With this configuration, the upper and lower impellers (33a) (34a)
When the is rotated, the bath water is turned into the bath water suction pipe (10) → water inlet (32e) → bath water suction passage (32a) → lower impeller room (34)
→ Forced bathing water path (32b) → Lower spout (32f) → Forced feeding into bathtub body (1) via forcible bathing pipe (11).

In addition, the upper impeller chamber of the circulation pump (P) (33)
As shown in FIG. 10, the suction pipe (41) is connected to the filter (43) through the suction pipe (41), and the suction pipe (32g) connected to the upper impeller chamber (33) is connected to the suction pipe (32g). 41) Through the inside, part of the bath water sucked into the lower impeller chamber (34) is sent to the filter (43), and the filter (43)
The hot water filtered by the filter is sent through the return pipe (42) into the hot water supply pipe (11), and is forced from the lower water discharge port (32f) of the lower impeller chamber (34) into the strong water supply pipe (11). It is made to join the bath water sent.

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

 Next, the configuration of the filter will be described.

As shown in FIG. 11, the filter (43) has an acrylic mesh (43b) stretched at a lower portion in a substantially cylindrical filter body (43a) having upper and lower surfaces closed, and the filter (43b) has an upper surface. The granular filter material (43c) is placed on the filter and the bath water is filtered to the filter body (43a).
The bath water can be filtered by passing the filter medium (43c) downward from above.

(43f) is an inflow port which communicates with the suction pipe (41) and opens at the upper inner surface of the filter body (43a).
As shown in Fig. 2, the inlet (43f) is connected to the filter body (43a).
Are opened in the tangential direction of the inner surface of the filter body, so that a swirling flow around the axis of the substantially cylindrical filter body (43a) is generated in the bath water flowing into the filter body (43a).

In order to generate the above-mentioned swirling flow, a baffle (43d) formed in a substantially bowl shape as shown in FIG. 13 can be used as a swirling flow generating means other than the above.
The kinetic energy of the bath water flowing into a) is
a) What is necessary is just to cause a swirling flow in the middle bath.

(43e) is an air vent pipe, one end of which communicates with the upper part of an air reservoir (43g) provided at the center of the inner surface of the upper wall of the filter body (43a), and the other end of which is a hot water supply pipe (1).
It communicates with 1).

A rectifying unit is provided downstream of the swirling flow generating unit of the filter (43) and upstream of the filtering medium (43c). That is, in the middle stage of the filter body (43a),
A rectifying plate (43h) as rectifying means is stretched substantially horizontally above the filled filter material (43c) to rectify the swirling flow.

The current plate (43h) has a thick circular plate (43j) with a large number of through holes (43k), as shown in FIG.
As shown in FIGS. 15 and 16, a honeycomb core (43m) or a bundle of a number of short small-diameter cylinders (43n) bundled and each cylinder is opened on the upper and lower surfaces of a rectifying plate (43h) is used. What is essential is that the swirling flow generated on the upper surface of the flow straightening plate (43h) be straightened and flowed to the lower surface.

Then, return the pipe (4) to the lower end of the filter body (43a).
One end of 2) is connected and connected, and an electric three-way valve (45) is provided in the middle of the lead-in pipe (41). A drain pipe (46) is connected to one end of the electric three-way valve (45). The connecting pipe (41) and the drain pipe (46) can communicate with each other via the valve (45).

When the electric three-way valve (45) is set in a state where the drain pipe (46) is closed and the suction pipe (41) flows, a part of the hot water flows into the lower stage of the circulation pump (P). Impeller room (34) → Interlocking flow path (32d) → Upper impeller room (33) → Strong filtration path (32c) → Upper spout (32g)
→ Retraction pipe (41) → Electric three-way valve (45) → Sent to the filter (43) via the retraction pipe (41) and filtered.
It passes through the return pipe (42) and joins the bath water strongly fed into the bathtub body (1) through the bath hot water pipe (11).

During the bubble generation operation of the bubble generating bath (A), bubbles mix into the bath water sucked into the circulation pump (P), and the bubbles are sent to the filter body (43a) together with the bath water. However, it is separated in the filter main body (43a) and discharged to the bathing strong feed pipe (11) through the air vent pipe (43e) so as not to hinder the function of the filter (43). Excess bath water sent to the filter body (43a) is discharged to the bath hot water pipe (11).

In particular, the inlet (43f) is opened in the upper inner surface of the filter body (43a) in the tangential direction of the filter body (43a) to generate a swirling flow about the axis of the filter body (43a). By doing so, the hot water and the air bubbles are separated by the centrifugal force of the swirling flow, and the air bubbles are concentrated in the upper center of the filter body (43a) provided with the air reservoir (43g). Can be effectively separated and discharged.

Furthermore, the rectifying plate (43h) is stretched above the filled filter medium (43c) to rectify the swirl flow, so that the swirl flow causes the filter medium (43c) on the surface to flow laterally or soar. If the excess hot water is sent to the filter body (43a) and the excess hot water is discharged from the air bleeding pipe (43e), it is mixed with the hot water and filtered. The material (43c) can be prevented from flowing out.

Further, by switching the electric three-way valve (45), the upstream suction pipe (41) is closed, and the upstream suction pipe (4) is closed.
When the 1) and the drain pipe (46) are in communication with each other, part of the bath water in the hot water supply pipe (11) is returned to the return pipe (42).
The filter medium (43c) passes through the inside of the filter medium (43a) from the lower side to the upper side, so that the filter medium (43c) can be backwashed.

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

 Next, the control unit (C) will be described.

As shown in FIG. 3, the control unit (C) includes a microprocessor (MPU) and an input / output interface (50) (5).
1), a memory (52) including a ROM and a RAM, and a timer (53).

The input interface (50) detects the water pressure in the rotational speed detection sensor (6), the valve body reference position detection sensor (23f), the valve position detection sensor (91), and the hot water supply pipe (11). Pressure detection sensor (48), infrared receiving sensor (30
b) A bath water temperature detection sensor (T) for detecting the temperature of the bath water in the bathtub body (1) is connected.

The output interface (51) includes an inverter (I),
The motor for driving the nozzle valve advance / retreat (M1), the motor for driving the valve for adjusting the amount of air bubbles (M2), and the electric three-way valve (45) are connected.

The memory (52) stores the motors (M) (M1) (M2) and the electric three-way valve (45) based on the output signals from the above-described sensors and the signals from the remote controller (30). A control program for controlling the driving unit is stored.

In particular, in controlling the rotation speed of the circulation pump (P), the frequency of the AC power supply (S) is converted by the inverter (I) controlled by the control unit (C) and supplied to the pump driving motor (M). It is done by doing.

In particular, a routine for preventing the freezing of the filter (43) is stored in the memory (52) of the control unit (C), and the detection value of the bath water temperature detection sensor (T) is a constant temperature (for example, 5 ° C.). When it falls below, this routine is executed.

That is, when the temperature of the bath water falls below the certain temperature and the water level in the bathtub body (1) detected by the pressure detection sensor (48) is higher than the suction port of the bath water suction pipe (10), the inverter A low-frequency AC output from (I) is output to a pump driving motor (M), and a circulation pump (P) is rotated at a low speed, so that the bath water in the filter body (43a) flows and the bathtub is turned on. The freezing is prevented by heating the bathtub body (1) with the residual heat of the bath water in the body (1).

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

As shown in FIG. 16, the remote controller (30) includes an ON / OFF switch (60), a mild flow switch (61) which is a favorite injection mode switch, a finger pressure blow switch (62), and a pulse blow switch ( 63), Massage blow switch (64) Wave blow switch (6)
5) and air pulse blow switch (79), bubble amount increasing / decreasing switches (66) (67), bath water spouting intensity switch (68) (69), cycle increasing / decreasing switch (70) (7)
1) and the pattern switch (72), the pattern switch (73), the pattern pattern switch (74), and the pattern pattern (foot) A switch (75), an abdominal ejection nozzle use pattern switch (76), and a filter washing switch (77) are provided.

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

Also, (78) is a power lamp, (60a) is an operation display lamp, (61a) (62a) (63a) (64a) (65a) (79a) are mode switch display lamps, and (66a) (67a) are air bubbles Amount setting lamps, (68a) and (69a) are bathwater jet intensity setting lamps,
(70a) and (71a) are bath water ejection cycle setting lamps, (72a) and (7
3a) (74a), (75a) and (76a) are discharge nozzle use pattern setting lamps, and (77a) is a filter cleaning switch display lamp.

Further, as shown in FIG. 11, the remote controller (30) includes an infrared irradiator (30a) at a front end thereof, and operates a switch to operate a preset multi-frequency seattone modulation system (MFTM).
An infrared signal modulated in accordance with the operation of each switch is transmitted from the infrared irradiator (30a), and the infrared signal is received by the infrared receiving sensor (30b) (see FIG. 1) installed in the bathroom, The desired driving device is driven based on the control program sent to the interface (50) of the control section (C) and read from the memory (52).

In addition, the remote controller (30) is configured to be able to float on the surface of the bath so that a bather can operate in a bathing state.

In addition, infrared receiving sensor (30b) and air intake unit (5)
May be integrally formed.

With the above configuration, the air bubble generation bath (A) is controlled by the remote controller (30) operable on the surface of the bath water, through the control unit (C), the rotation speed of the circulation pump (P), and the ejection nozzles (2) ( 3) A valve body (22) for adjusting the ejection amount provided in (4)
The opening / closing amount and opening / closing speed of the valve, the opening / closing amount and opening / closing speed of the bubble amount control valve (5d) provided in the air intake section (5), and the switching operation of the electric three-way valve (45) can be performed. By adjusting the rotation speed of the pump (P), adjusting the opening and closing amount and opening / closing speed of the valve body (22) for adjusting the ejection amount, adjusting the opening and closing amount and opening / closing speed of the bubble amount adjusting valve (5d), and a combination thereof. , Six types of jet modes (mild blow, finger pressure blow, pulse blow, massage blow,
Wave blow and air pulse blow) can be set, and each jet mode can be set by turning on / off the favorite jet mode switches (61) to (65) provided on the remote controller (30).
It can be selected by the OFF operation.

In addition, for each mode, the bubble amount increase / decrease switches (66) and (67) and the bath water jet strong / weak side switch (68)
By turning ON / OFF the (69) and the cycle increase / decrease switches (70) and (71), respectively, the increase / decrease adjustment of the bubble amount, the strength adjustment of the spout bath, and the increase / decrease adjustment of the spout bath cycle Can be performed.

Further, by turning on / off each of the switches (72) to (76) of the favorite ejection nozzle use pattern, the use pattern of the six ejection nozzles to which the jet mode is applied can be selected. I have.

Further, by turning on and off the filter washing switch (77), the electric three-way valve (45) is switched to operate, so that the filter (43) can be backwashed.

(F) Effects According to the present invention, the following effects are produced.

A bath water circulation path comprising a bathtub body, a circulation pump, a bathwater suction flow path for communicating the bathtub body with the circulation pump, and a hot water flow path, and a filter connected to the bathwater circulation flow path And a jet nozzle provided in the bathtub main body, wherein a swirling flow generating a swirling flow in the bathwater flowing into the filter is provided in a bathtub water circulating device capable of jetting bathwater mixed with bubbles into the bathtub main body. By providing the means, the air bubbles mixed in the bath water can be effectively separated, and the function of the filter is not hindered. In particular, it is effective when jetting bath water containing air bubbles from the jet nozzle.The hot water is filtered during the air bubble generation operation, and even if air bubbles are mixed in the hot water sent to the filter body, Due to the centrifugal force of the swirling flow generated in the hot water in the filter body, the hot water and the air bubbles are effectively separated, preventing the air bubbles from entering the filter medium, and preventing the filtration accuracy from being reduced due to pulsation. .

By providing the rectification means on the downstream side of the swirling flow generating means of the filter and on the upstream side of the filtering material, the swirling flow of the bath water is rectified by the rectifying means and reaches the filtering material, Of the filter material can be prevented from flowing up and the outflow of the filter material can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bubble generating bathtub according to the present embodiment. FIG. 2 is a plan view of the bubble generating bathtub. FIG. 3 is an explanatory view of a conceptual configuration of the bubble generating bath. FIG. 4 is an explanatory sectional view of a pressure detection sensor. FIG. 5 is a block diagram showing a configuration of the sensor. FIG. 6 is an enlarged sectional view of an ejection nozzle. FIG. 7 is an enlarged sectional view of an air intake section. FIG. 8 is a piping diagram of an intake pipe. FIG. 9 is a partially cutaway front view of a pump driving motor and a circulation pump. FIG. 10 is a piping diagram between a circulation pump and a filter. FIG. 11 is a longitudinal sectional view of a filter. FIG. 12 is a sectional view taken along the line II of FIG. 11; FIG. 13 is a sectional view showing a modification of the swirling flow generating means. FIG. 14, FIG. 15, and FIG. 16 are partial plan views of the current plate. FIG. 17 is a plan view of a remote controller. (A): Bubble generation bath (P): Circulation pump (C): Control unit (D): Bath water circulation flow path (I): Inverter (2): Foot side ejection nozzle (3): Back side ejection nozzle ( 4): Ventral jet nozzle (10): Bath water suction pipe (11): Bath water forced-feed pipe

Continuation of the front page (72) Inventor Mitsuaki Hashida 2-81-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kiki Co., Ltd. Chigasaki Plant (72) Inventor Koichi Uchiyama 2-81-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Toto (72) Inventor Kenji Moriyama 2-81-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Equipment Co., Ltd. Chigasaki Factory (58) Field surveyed (Int. Cl. ⁶ , DB name) A61H23 / 00

Claims (2)

(57) [Claims] 1. A bath water circulation flow path comprising a bathtub body, a circulation pump, a bathwater suction flow path and a bathwater high-pressure flow path communicating the bathtub body and the circulation pump, and a bathwater circulation path. A bathtub water circulation device comprising a communicating filter and a jet nozzle provided in the bathtub main body and capable of jetting hot water mixed with air bubbles into the bathtub main body, wherein a swirling flow is applied to the bathwater flowing into the filter. A bath tub water circulating device comprising a swirling flow generating means for generating. 2. The bathtub water circulation device according to claim 1, wherein a rectifying means is provided downstream of the swirling flow generating means of the filter and upstream of the filtering material.