JPH03224568A - Bubble generating bathtub being capable of safety control of initial jet - Google Patents

Abstract

PURPOSE:To precisely execute the position control of an exhaust nozzle by moving a valve body to a valve seat in a fully closed position, allowing it to abut thereon and allowing it to execute step-out, whenever the exhaust nozzle is operated by depressing an operation switch. CONSTITUTION:When an operation switch is turned on, exhaust nozzles 2-4 are moved in the closed direction, and a valve body 22 is allowed to abut on a valve seat 21f, and also, it is allowed to execute step-out. Thereafter, the exhaust nozzles 2-4 are moved in the closed valve direction, stopped in a fully opened position, and in the case the exhaust nozzles 2-4 move to a fully opened position and a valve driving detection sensor S1 is turned on, the initial operation is completed, and thereafter, a mild blow operation is started. However, in the case the valve driving detection sensor S1 is not turned on, it is decided that a nozzle valve body opening/closing operation motor M1 is abnormal and the motor is stopped. In such a way, even in the initial operation at the time of operation switch, abnormality of the exhaust nozzles 2-4 can be detected surely, therefore, the certainty and the safety of a blow operation can be secured in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a bubble-generating bathtub in which the initial jet flow can be safely controlled.

(b) Prior art The present applicant previously proposed in Japanese Patent Application No. 63-230065 that a bath water suction channel and a bath water Bath water circulation Tf consisting of a flow path
A J flow path is provided, and the end of the forced bath water flow path is opened into the bathtub body to form a jet nozzle, and an air intake part is connected to the bath water supply flow path to form the jet nozzle. A bubble-generating bathtub has been disclosed that is configured to be able to spray bathwater containing more bubbles into the bathtub body.

With this configuration, the circulation pump sucks the bath water in the bathtub body through the bath water suction pipe, and the i-ring pump causes the bath water to pass through the bath water bullet delivery pipe and squirt it into the bathtub body from the discharge blow of the same pipe. At this time, the air intake is mixed with the air sucked in by using the negative pressure caused by the hot water jetting out from the air intake, so that the hot water mixed with bubbles can be jetted out. I have to.

Furthermore, by opening and closing the jet nozzle, the jet amount and jet pressure can be changed, and the jetting location can be arbitrarily selected in cooperation with the circulation pump.

(c) Problems to be Solved by the Invention However, such bubble-generating bathtubs still have the following problems to be solved.

That is, the nozzle valve body opening/closing motor for opening and closing the jet nozzle uses a position detection sensor for detecting the current operating position or opening position.

However, there are limits to the repeatability and resolution of the position detection sensor, and there is a risk that accumulated detection errors may occur after years of use, and such errors may make it impossible to precisely control the drive of the jet nozzle. .

In addition, when the jet nozzle is driven at high output, when the valve body comes into contact with the valve seat, the valve body may bite into the valve seat, damaging the internal structure of the motor for opening and closing the nozzle valve body. , which may result in a decrease in output.

In addition, the above-mentioned jet nozzle does not have an abnormality detection function, so if a failure occurs in the motor for opening and closing the valve body for the nozzle, the motor continues to operate.
There was a possibility of personal injury due to burnout or electrical leakage to the bathtub body.

An object of the present invention is to provide a bubble-generating bathtub that can solve the above-mentioned problems. 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 circulation pump, and the end of the bath water forced flow path is opened into the bathtub body to form a spout nozzle. In addition, in a bubble-generating bathtub configured such that an air intake part is connected in communication with the bath water filling channel so that bath water mixed with bubbles can be spouted from the spouting nozzle into the bathtub body, the spouting nozzle is configured to have a jetting amount The present invention relates to a bubble-generating bathtub capable of safely controlling the initial jet flow, which is characterized by having an automatically variable nozzle and a control unit including the following jet nozzle initial drive program.

That is, when the operation switch is turned on, the control unit applies a drive voltage lower than the normal drive voltage to the motor for opening and closing the valve body for the jet nozzle, rotates it in the valve closing direction, and brings the valve body to the fully closed position. It moves to and contacts the valve seat to cause it to step out, and then applies normal drive voltage to perform drive control to retract the valve body to the set open position.Furthermore, during the execution of the above initial drive program, the valve drive is constantly detected. A sensor detects whether or not there is an abnormality in the automatically variable jet nozzle, and if there is an abnormality, the drive of the motor for opening and closing the nozzle valve body is stopped.

(E) Actions and Effects According to the present invention, the following actions and effects occur.

That is, in the present invention, each time the operation switch is pressed to operate the jet nozzle, the valve element can be moved to and abutted against the valve seat which is in the fully closed position, thereby causing step-out. Therefore, it is possible to reliably detect the completely closed state, and also to periodically cancel the accumulation error, and to precisely control the position of the ejection nozzle.

In addition, when the operation switch is ON, a drive voltage lower than the normal drive voltage is applied to the motor for opening and closing the valve body of the jet nozzle to rotate it in the valve closing direction and move the valve body to the valve seat which is in the fully closed position. - Since they are brought into contact with each other, damage to the valve body part and damage to the internal structure of the nozzle motor can be prevented as much as possible.

Furthermore, in the present invention, since a valve drive detection sensor is provided that can detect the presence or absence of an abnormality in the nozzle valve element opening/closing motor by the forward and backward movement of the valve element support rod of the motor, it is easy to turn on the operation start switch. Moreover, it is possible to reliably detect whether or not the motor for opening and closing the nozzle valve body is abnormal.

Therefore, maintenance of the motor for opening and closing the nozzle valve body becomes easy, and it also reliably prevents electric leakage accidents to the bathtub body that would occur if a malfunctioning motor for opening and closing the nozzle valve body was continued to operate. be able to.

(F) Example Hereinafter, the structure of the bubble-generating bathtub capable of safely controlling the initial jet flow according to the present invention will be specifically explained based on the example shown in the attached drawings.

(Overall structure of bubble-generating bathtub) First, the overall structure of the bubble-generating bathtub according to the present invention will be described.

In FIGS. 1 to 3, A is a bubble-generating bathtub, and the bubble-generating bathtub A has feet on the front and rear walls and left and right side walls of the bathtub body 1, which is formed into a box shape with an opening on the top surface, and which can automatically vary the amount of spray. A total of six lateral, dorsal, and ventral jet nozzles 2.2.3, 3, and 4.4 are provided.

The bathtub body 1 has a flange-like edge 1 having a constant width on the periphery.
a, an air intake portion 5 is provided on the same edge portion 1a, and vertically elongated gate portions 1b, l having a crosswise simplified V-shape are provided approximately at the center of the left and right side walls.
The ventral jet nozzle 4.4 is attached to the inclined surface of the concave portion 1b facing the rear wall (dorsal side) of the concave portion 1b, facing toward the center of the rear wall.

Moreover, the ventral side jet nozzle 4.4 is installed at a higher position than the other leg side and dorsal side jet nozzles 2, 2, 3.3, so that it can spray bath water to the ventral side, chest side, and other parts of the human body. We make sure that you can hit it.

Furthermore, a functional unit 9 is disposed outside the bubble-generating bathtub A, and within the functional unit 9 there is a circulation pump P that circulates the bath water, and a circulation pump P that circulates the bath water. A filter 43 that filters bath water, a pump drive motor M that drives the pump P, a nozzle valve opening/closing motor H6 (described later), and a bubble volume adjustment valve opening/closing motor! and a control section C that controls the driving of the electric three-way valve 45.

Moreover, between the circulation pump P and the bubble generating bathtub A,
A bath water circulation flow path passing through the bathtub chamber wall W is interposed.

That is, as shown in FIGS. 1 and 3, the bath water circulation flow path includes a bath water suction pipe IO for sending bath water from the bubble generating bathtub A to the circulation pump P, and from the circulation pump P. It is composed of a bath water bullet delivery pipe 11 for sending bath water to the bathtub A.

One end of the bath water suction pipe 10 is connected to the suction port 1- opened at the bottom of the bathtub body l, and the circulation pump P
The other end of the hot water blast pipe 11 communicates with the water inlet of the circulation pump P to draw bath water into the circulation pump P, while the other end of the hot water blast pipe 11 communicates with the water outlet of the circulation pump P and connects the jet nozzles 2, 2. ．．
The other ends are connected to 3.3 and 4.4 for communication.

In addition, the above-mentioned suction port 1m is connected to the foot side/dorsal side jet nozzle 2.
．． It is installed at a lower position than 2.3.3.

In addition, a pump drive motor M that drives the circulation pump P
As shown in FIG. 4, an inverter E is interposed between the inverter E and the control unit C, and the output frequency of the inverter E is changed to control the rotational speed of the circulation pump P. The discharge amount and discharge pressure of P can be changed smoothly and reliably.

There are also mild blow operations where the amount of bubbly bath water is relatively high and the jet pressure is relatively low, and spots where the amount of bubbly bath water is relatively low and the jet pressure is relatively high. Plow operation, pulse blow operation in which bath water mixed with bubbles is intermittently ejected, and wave blow operation in which the ejection amount and ejection pressure are varied in a wave-like manner are possible.

In addition, a pressure detection sensor 48 is attached to the middle part of the bath water suction pipe lO (which can also be the suction side in the circulation pump P), as shown in FIG. In addition to detecting the amount, that is, the water level, the pressure of the bath water sucked into the circulation pump P through the bath water suction pipe 10 can be detected.

The water level measured by the output from the pressure detection sensor 48 is configured to control the start and stop of the blow operation, antifreeze operation, filter cleaning operation, and automatic filter cleaning operation by the control unit C. There is.

The details of each of these operations are the same as those described in Japanese Patent Application No. 1-73367 previously filed by the present applicant.

In addition, as shown in FIG. 4, a bath water temperature detection sensor T is installed in the middle of the bath water bullet conveying pipe 11 to detect the temperature of the bath water being pumped through the pipe 11. The detection results are sent to the control unit C to control blow operation, antifreeze operation, filter cleaning operation, and automatic filter cleaning operation.

By using such bath water temperature detection sensor T, when the hot water supply does not meet the specified water temperature, the control unit C starts blowing operation, anti-freezing operation, filter cleaning operation, and automatic filter cleaning operation. I'm trying not to.

In addition, the air intake part 5 and each jet nozzle 2.2.3 described above are
．． As shown in FIGS. 1 and 5, intake pipes 12a, 12b, and 12c are interposed between the intake pipes 3 and 4. It is communicatively connected to the jet nozzles 2, 2, 3, 3, 4.4.

Then, by utilizing the negative pressure generated when the bath water is spouted from each spout nozzle 2, 2, 3, 3, 4.4, the operation panel section 6, which will be described later,
The air taken in through the air intake port 6a provided at the top and the air intake section 5 connected to the lower part of the operation panel section 6 is passed through the intake pipes 12a, 12b, and 12c to each of the jet nozzles 2, 2.3, 3, and 4. .4, and the bath water mixed with air bubbles can be spouted into the bathtub body 1 from each spout nozzle 2, 2, 3, 3, 4.4.

Further, as shown in FIGS. 1 and 3, an operation panel section 6 is provided near the bathtub body 1, and the operation of the bubble-generating bathtub A can be performed using the operation panel section 6. I'm trying to make it possible.

Note that the amount of mixed air is controlled by the operation of the motor M2 for opening and closing the valve body for adjusting the amount of air bubbles.

In FIG. 1, 30b is an infrared receiving sensor provided on the operation panel section 6, which receives infrared rays emitted from the remote controller 3σ. 30c is a reception indicator lamp provided on the operation panel section 6'', and 30'' is a wall holder for the remote controller 30.

1 Structure of the ejection nozzle 1 Next, the structure of the ejection nozzle 2, 2, 3.3, 4.4 used in the ejection nozzle drive control method which is the gist of the present invention is shown in the attached drawings, particularly in FIGS. This will be explained in detail with reference to FIG.

The foot side, dorsal side, and ventral side jet nozzles 2, 2.3, and 3.4.4 are automatic variable spout nozzles with the same configuration that can automatically change the spout volume and jet pressure of bath water, respectively. The structure of the foot-side jet nozzle 2 will be described below with reference to FIGS. 5 to 11.

(Overall configuration of the jet nozzle) As shown in FIG. 6, the foot jet nozzle 2 is essentially a cylindrical nozzle that is cantilevered to the foot jet nozzle connection port 1g of the bathtub body l. Inside the casing 20, there are: (1) a jet forming part 50 that forms the bath water flowing from the hot water bullet pipe into a jet; and (2) a mixing effect due to an ejector effect and turbulence on the bath water in a jet state from the jet forming part 50. an air mixing section 70 that mixes air using the air mixing section 70, ■ a throat section 59 that determines the spouting direction of the bath water mixed with bubbles that is jetted into the bathtub body 1 from the air mixing section 70, and ■ a jet flow forming section. Valve body 2 for controlling the ejection amount forming a part of 50
2, a motor for opening and closing the valve body for the nozzle that advances and retreats; ■ electrical insulation measures and structure for the bathtub body 1, such as the water leak sensor 23v, and ■ a motor for opening and closing the valve body for the nozzle, etc. It is constructed by arranging an electrical connection structure for power supply and control.

■Also, in order to facilitate inspection and repair, the jet nozzle 2 according to the present embodiment includes the throat section 59, the air mixing section 70, the jet flow forming section 50, and the nozzle valve from the nozzle casing 20 described above. Another feature is that the body opening/closing motor and the electrical connection structure can be integrally removed from the bathtub body.

Hereinafter, the jet nozzle 2 having the above basic configuration will be explained in Figs.
Each component will be explained with reference to FIG.

(Nozzle casing) As shown in FIG. 6, the nozzle casing 20 is formed from a long cylindrical body disposed horizontally, and has a female threaded portion 20a formed on the inner surface and a flange portion 2 at the end.
0b and the bathtub mounting portion 20c.
An intake pipe connection part 20e (see Fig. 8) that is connected to the rear of the intake pipe connection part 20e and has an air inflow cylinder part 20d on the outer peripheral surface; Attach a hot water bullet feed pipe connecting portion 20g (see Fig. 7) provided with a section 20f, and a motor M1 for opening and closing the nozzle valve body, which is formed at the rearmost part and advances and retreats a valve body 22 for regulating the amount of ejection, which will be described later. A motor etc. attachment part 20h is provided.

Bathtub body 1 of nozzle casing 20 having such a configuration
The mounting structure will be explained below.

In FIG. 6, lh is a ring-shaped gasket fitted around the periphery of the leg-side jet nozzle connection port tg.

Further, li is a nozzle mounting cylinder extending from the inside to the outside of the bathtub main body l by penetrating the spout nozzle connection port 1g to which the above-mentioned ring-shaped gasket 1h is attached, and the nozzle mounting cylinder 1i is The inner end is provided with an enlarged diameter flange portion 13, and the outer peripheral surface of the outer end of the bathtub is provided with a male threaded portion 1k.

The nozzle mounting cylinder 1i presses the end face of the enlarged diameter flange portion 1j against the inner surface of the ring-shaped packing lh, and connects the male threaded portion 1k to the nozzle casing 20.
It is tightly screwed into a female threaded portion 20a provided on the inner surface of the bathtub attachment portion 20c.

This screwing allows the bathtub attachment part 20c of the nozzle casing 20 to be firmly and watertightly attached to the lower part of the front wall of the bathtub body l.

Further, the bathtub attachment portion 20c is substantially hidden by a decorative cover 26, which will be described below.

That is, the decorative cover 26 consists of a bathtub-side flange portion 26a having a size that can hide the enlarged diameter flange portion 1j of the nozzle mounting cylinder 11, and a cylindrical portion 26b that penetrates the spout nozzle connection port 1g. A male threaded portion 26c is formed on the outer peripheral surface of the shaped portion 26b.

Then, connect this male threaded portion 26c to the nozzle casing 20.
A female threaded portion 20I formed on the inner circumferential surface of the front end of the! It is removably screwed onto the

Further, the rear end of the decorative cover 26 allows a throat fixing member 25, which will be described later, to be fixed inside the nozzle mounting cylinder 1i.

Next, the configuration of the intake pipe connecting portion 20e provided behind the bathtub attachment portion 20c of the nozzle casing 20 will be described.

As shown in FIGS. 6 and 8, the nozzle casing 20
The air inflow cylinder part 20d protruding from the outer circumferential surface of the air inflow cylinder part 20d has a female thread part 20i on its inner surface, and can be threadedly connected to one end of the intake pipe 12a. Note that 20s indicates an auxiliary air inflow cylinder.

Furthermore, as shown in FIGS. 6 and 8, the intake pipe connecting portion 20e has an air inlet 20j formed therein, and through the air inlet 20j, the air is removed by the ejector effect and turbulence. Utilizing the mixing effect, it can be mixed into the jet bath water flowing through an air mixing space 21d formed in the front portion 21g of the valve seat forming cylinder 21, which will be described later.

In addition, in FIGS. 6 and 7, 20g indicates a connecting portion of the hot water bullet conveying pipe, and one end of the hot water bullet conveying pipe 11 is in a watertight state at the bath water inflow cylinder portion 20f of the connecting portion 20g. They are detachably connected to each other, and a bath water inlet 20k is formed inside thereof.

With this configuration, the bath water from the bath water bullet conveying pipe 11 passes through the bath water inlet 20k, and passes through the valve seat forming cylinder 2, which will be described later.
The water flows into the bath water inflow space 2Op formed at the rear of the bath water.

In addition, in the figure, arrow n indicates the inflow direction of bath water.

Next, the valve driving device mounting part 20h provided at the rearmost part of the nozzle casing 20 will be explained.As shown in FIG. , the expanded diameter extension part 20- cooperates with a lid body 20n connected to its rear end in a watertight state, and has a motor for sealingly storing therein a motor M1 for opening/closing a nozzle valve body, etc., which will be described later. A storage space 20Q is formed.

(Throat Portion) Next, the specific configuration of the throat portion 59 will be described with reference to FIG. 5.

The throat part 59 is substantially arranged in the front part of the nozzle casing 20, and includes a throat 24 having a jet flow path formed therein, and a throat fixing member 25 that supports the throat 24 in a swing-adjustable manner. , and a throat concave support surface 21a formed on the front portion 21g of the valve seat forming cylinder 21 disposed in the center of the nozzle casing 20.

The throat 24 has a spherical throat base 24a whose outer peripheral surface is supported within the throat concave support surface 21a of the valve seat forming cylinder 21 so as to be swingable in vertical and horizontal directions, and a spherical throat base 24a whose outer circumferential surface is supported within the throat concave support surface 21a of the valve seat forming cylinder 21 so as to be swingable in the vertical and horizontal directions. It is formed from a cylindrical throat tip 24b with a reduced diameter, and the throat tip 24b can be manually oscillated in any direction up, down, left, or right about the base 24a.

Moreover, since a certain sliding resistance is provided in advance between the outer peripheral surface of the throat base 24a and the throat concave support surface 21a of the valve seat forming cylinder 21, the throat 24 can be moved to any swing angle position. can be retained.

Further, the throat fixing member 25 is attached to the nozzle casing 20
The decorative cover 26 is held at a predetermined position on the inner peripheral surface of the front portion thereof via the rear end of the decorative cover 26 and the fixing ring 28.

(Air Mixing Unit) Next, the configuration of the air mixing unit 70 will be specifically described with reference to FIGS. 6 and 8.

As described above, the intake pipe connecting portion 20e of the nozzle casing 20 has an air inlet 20j formed therein, as shown in FIGS. 6 and 8.

On the other hand, the central reduced diameter portion 21b of the valve seat forming cylinder 21, which is disposed at a position corresponding to the intake connecting portion 20e, is provided with a plurality of inner air inflow ports 21c, as shown in FIG. .

An annular air communication path 21e is formed between the nozzle casing 20 and the valve seat forming cylinder 21.

With this configuration, air is passed through the air inlet 20j provided in the nozzle casing 20, the annular air communication passage 21e, and the inner air inlet 21c provided in the valve seat forming cylinder 21, and is freed from the ejector effect and turbulence. Utilizing the mixing effect, it is possible to mix effectively and uniformly from the entire circumference into the jet bath water flowing in the air mixing space 21d formed in the valve seat forming cylinder 21.

Note that m indicates the air inflow direction.

(Jet Formation Section) Next, the configuration of the jet formation section 50 will be specifically described with reference to FIGS. 6 and 7.

As is clear from FIG. 6, the jet flow forming section 50 substantially includes a jet flow forming channel 27 provided at the center of the rear wall 21i of the valve seat forming cylinder 21 disposed within the nozzle casing 20; The valve seat 21f formed in the jet flow forming flow path 27 approaches and separates from the same valve seat 211 to open and close the jet flow forming flow path 27! (Adjusts the jetting amount and jetting pressure), and the front surface of a motor mounting block 29 that supports the valve body 22 so that it can move forward and backward toward the valve seat 21f. .

First, the configuration of the jet metering i1 valve body 22 will be explained. As shown in FIG. It is for forming a jet bath in the channel 27,
By advancing and retreating, it is possible to form a jet bath water and also adjust the amount of jet bath water mixed with bubbles that is jetted out from the throat 24 of the jet nozzle 2.

The ejection amount adjusting valve body 22 is firmly connected to the tip of a valve body support rod 23d of a nozzle valve body opening/closing motor n1, which will be described later, via an insert fitting 22a.

Further, the valve body 22 has a conical portion 22b formed on its distal end side, which bulges out while gradually reducing its diameter toward the valve seat 21f.

Such a conical portion 22b can generate a linear rod-shaped bath water jet flow in the jet flow forming channel 27, and the ratio of jet pressure to jet amount is relatively high, making it possible to create a spot blower having an acupressure effect. can be obtained easily.

Next, to explain the watertight structure provided around the valve body 22 for adjusting the amount of jet, the tip of a bellows-shaped waterproof cover 22c is integrally connected to the rear part of the valve body 22 for adjusting the amount of jet. The base end of the cover 22c is connected to the motor mounting block 2.
9 through an O-ring 22d.

Further, a cylindrical waterproof cover 22e is provided concentrically around the jet amount adjusting valve body 22.
e has its base end attached to the motor attachment block 29, and supports the ejection amount adjusting valve body 22 in a slidable manner on the inner circumferential surface of an annular projection 22f provided at its distal end.

Further, as shown in FIG. 6, an O-ring 21h is interposed between the inner peripheral surface of the nozzle casing 20 and the outer peripheral surface of the rear wall 21i of the valve seat forming cylinder 21.

Due to the presence of the O-ring 21h, the bath water inflow space 2
From 0p, the bath water enters the air communication path 21e through the gap between the inner circumferential surface of the nozzle casing 20 and the outer circumferential surface of the rear wall 21i of the valve seat forming cylinder 21, and enters the air communication path 21e.
By forming a water film on the interface between the air inlet 20j and the air inlet 20j, it is possible to reliably prevent the air from flowing into the aeration space 21d.

(Motor for opening/closing the valve body for a nozzle) Next, the configuration of the motor H9 for opening/closing the valve body for the nozzle will be explained. The cylindrical motor casing 23 forming the outer shell of the motor M1 is As shown in FIG. 9, it is detachably attached to the rear surface of the motor attachment block 29.

A cylindrical coil 23a is provided in the motor casing 23 concentrically with the nozzle casing 20, a cylindrical magnet 23b is provided in the coil 23a, and by exciting the coil 23a, the magnet 23
b is closed so that it can be rotated in forward and reverse directions.

In addition, there is a cylindrical rotary rotor (2) inside the magnet 23b.
3C are attached concentrically and integrally, the rotor nut 23c is rotatably supported by a bearing 23e, and the valve body support rod 23d, which has the valve body 22 for adjusting the jetting amount at its tip, is slid forward and backward in the rotor nut 23C. Insert freely
I support it.

A spiral rotor-side ball groove 23k is formed on the inner circumferential surface of the rotor nut 23C, while a spiral rod-side ball groove is formed on the outer circumferential surface of the valve body support ring 23d in the same direction as the rotor nut-side ball groove 23. 23m, and a plurality of balls 23n are interposed between the opposing rotor land side ball groove 23 and the rod side ball groove 23m so as to be freely transferable.

Furthermore, 23g represents the rotational movement of the rotor nut 23c,
In order to convert the valve body support rod 23d into linear motion,
This is a rotation restriction piece that restricts rotation of the valve body support rod 23d.

In this embodiment, the rotation regulating piece 23g is formed by a ball that is fitted and held by a screw 23ν into a pair of grooves 23χ provided at 1806 opposing positions on the rear outer peripheral surface of the valve body support rod 23d. has been done.

With this configuration, the motor M for opening and closing the nozzle valve body is operated based on the drive output from the control unit C.

When the magnet 23b is energized, as shown in FIG.
At the same time, rotor nut 23c rotates, and on the same day - rotor nut 2
3c, the valve body support rod 23d, whose rotation is regulated by the rotation regulating piece 23g, advances and retreats, and the valve body 22 for adjusting the jetting amount attached to the tip of the valve body support rod 23d moves forward and backward.
By moving the valve toward and away from the valve seat 21f, 11 adjustments can be made to the amount and pressure of hot water jetted into the bathtub body l.

In the operation of the jet nozzle 2, the amount of opening and closing of the jet flow forming channel 27 corresponds to the amount of movement of the valve body support rod 23d, and the amount of movement of the rod 23d corresponds to the amount of movement of the valve body support rod 23d. It is proportional to the number of times a voltage pulse is applied to the nozzle valve opening/closing operation motor h1 from the fully closed valve position, which is the maximum advanced position of the valve.

Therefore, by controlling the drive pulse amount of the nozzle valve body opening/closing operation motor M1 by the control unit C, the opening/closing amount of the jet flow forming channel 27, that is, the amount of bath water spouted from the spout nozzle 2, is adjusted accurately and finely. This allows fine adjustment of the amount and pressure of hot water jetted into the bathtub body 1.

Further, the nozzle valve body opening/closing motor M1 may be any motor as long as it can move the jet volume regulating valve body 22 forward and backward steplessly over a minute distance to finely adjust the jet volume and jet pressure of the bath water. In addition, piezoelectric actuators, ultrasonic motors, etc. can also be used.

Furthermore, a valve drive detection sensor S1 is provided at the rear end of the valve body support rod 23d to detect whether or not the nozzle valve body opening/closing motor h is operating normally.

Then, the sensor S1 detects that the valve body support rod 23d is at the reference position (for example,
When the valve body support rod 23d retreats a certain distance backward from the maximum extended position (i.e., the fully closed position), a sensor output is output, and based on the sensor output, the control unit C controls the nozzle valve body opening/closing operation motor i. Normal operation can be confirmed, and subsequent blow operation control including valve opening/closing control can be started.

On the other hand, if the above-mentioned valve drive detection sensor Sl does not output an on output even if the operation start switch is turned on, the control unit C
It is determined that an abnormality has occurred in the nozzle valve body opening/closing motor M1, and subsequent various operations are disabled.

Therefore, maintenance of the nozzle valve body opening/closing operation motor H1 becomes easy, and electric leakage accidents to the bathtub body l, etc., which are assumed to occur if a malfunctioning nozzle valve body opening/closing operation motor 11 is operated as is, are ensured. can be prevented.

Various types of sensors can be used as the valve drive detection sensor S, but in this embodiment, a Hall element is attached to the inner surface of the cover board 23q forming the rear wall of the motor casing 23 via a bracket 23K. 23i and
Valve body support rod 23d facing the Hall element 23+
It consists of a magnet piece 23j attached to the rear end position.

(Electrical insulation measures and structure for the bathtub body such as water leak sensor) Furthermore, in this embodiment, as an electrical insulation measure to reliably prevent electrical leakage from the jet nozzle 2 to the bathtub body 1, The following means or structures are adopted.

First, as shown in FIGS. 6, 7, and 10, the motor casing 23 of the nozzle valve opening/closing motor M1 is
A water leak sensor 23ν is attached to the outer surface of the lid body/substrate 23q provided at the rear of the lid body.

In this way, in the unlikely event that the motor M for opening and closing the valve body for the nozzle,
Even if water enters the motor storage space 20q that stores the
The water leak sensor 23v immediately detects this and stops the blowing operation, and all the jet nozzles 2.2,
In addition to stopping the operations of 3.3 and 4.4, a nozzle abnormality signal can be output to the operation panel section 6 side.

That is, the presence of the water leak sensor 23v can prevent personal injury caused by electrical leakage from the nozzle valve opening/closing motor M1 to the bathtub body l.

Furthermore, in this embodiment, in view of the importance of the water leak sensor 23ν in preventing personal accidents, the water leak sensor 2'3
In order to ensure the reliability of the operation of b, the same water leak sensor 23 is installed.
If the sensor cord i to b is short-circuited or disconnected due to environmental or mechanical causes, the blowing operation is stopped and all of the ejection nozzles 2, 2 . 3, 3, 4.4 are controlled to return to the fully closed position.

Further, as shown in FIGS. 10 and 11, the motor casing 23 of the motor M1 for opening and closing the nozzle valve body is coated with a conductive metal coating made of chrome plating on the front and back surfaces of the BS resin material, that is, on both surfaces. 80, and the metal coating 80 is connected to a ground terminal 81 of a ground cord h connected to the lid/substrate 23q.

Therefore, in the unlikely event that due to deterioration of the backing, etc., a part of the bath water in the bath water inflow space should
Even if it gets into the motor casing 23 → ground cord h
Connect it to the ground cord h of another jet nozzle through
Earth leakage current can be grounded, and leakage to the bathtub body can be reliably prevented, thereby reliably preventing personal accidents.

Further, as shown in FIG. 6, a pair of O-rings 29a and 29b are interposed between the outer circumferential surface of the motor mounting bronck 29 and the inner circumferential surface of the nozzle casing 20 with an interval in the axial direction. There is.

The O-rings 29a and 29b can reliably prevent bath water from entering the motor storage space 20Q from the bath water inflow space 20ρ.

In addition, in the configuration of the jet nozzle 2 shown in FIG. 6, a decorative cover 26, a nozzle mounting cylinder 14 for attaching the decorative cover 26, and a motor M1 for opening and closing the valve body for the nozzle.
Except for all other components of the jet nozzle 2, i.e., the nozzle casing 20. Valve seat forming cylinder 21. The motor mounting block 29 and the like are made of a non-metallic material, preferably a highly insulating synthetic resin.

Therefore, from this point of view, the motor M for opening and closing the valve body for the nozzle
1 to the bathtub body 1 can be reliably prevented.

In this embodiment, the throat 24, decorative cover 26, etc.
It is made of metal, emphasizing the pItI feeling that metal has.

Furthermore, as shown in FIG.
The other end of the cord protection cable 23s provided with the code 1 is connected to the control unit C and power source in the functional unit 9, whose humidity is kept low by a built-in motor cooling fan.

Therefore, since the humidity inside the functional unit 9 is kept low by the built-in motor cooling fan, the air conduction pipe 2
Through 3g-1, the humidity inside the motor storage space 20Q is also low (
Therefore, the electrical insulation of the jet nozzle 2 can be improved from this point of view as well.

(Electrical connection structure for power supply and control to the nozzle valve body opening/closing motor, etc.) As shown in Figures 6 and 9, the electrical connection structure for power supply and control to the nozzle valve body opening/closing motor M1, etc. Electrical connection is substantially performed by the edge connector 23ρ, the cover plate-cum-substrate 23Q, the bendable flat cable 23r folded multiple times, and the multicore cord protection cable 23g.

As shown in FIG. 9, the connector 23p has a socket 23t connected to the cover board 23q, and a plug 23u that is removably inserted into the socket 23t.
One end of the plug 23u is connected to a coil 23a of a motor H1 for opening and closing the nozzle valve body.

In addition, as shown in FIG. 9 and FIG.
A power supply cord, a control cord, and a total of nine cords a+l)+C+d+e+f+g+lI+1 are connected to i and 23q.

Among these cords, four power supply cords a, b,
c, d are for the drive circuit, and three control codes e, f,
g is for the valve drive detection sensor s1, one ground cord h is for the conductive metal coating 8o, and one control cord i is for the water leak sensor 23v.

In addition, as shown in FIGS. 6 and 13, the bendable flat cable 23, which is folded multiple times, is
The code aJ) + c + d + e + f, g + h + i is joined into a flat plate shape, and as described later, when taking out the old motor for opening and closing the valve body for the nozzle from the nozzle casing 20, it is extended in an accordion style to take out the motor. This is to make it easier.

Further, the flat cable 23r has a polyester film 23r-1 attached to at least one side surface thereof, thereby reliably preventing twisting of the flat cable 23r during expansion and contraction.

In addition, the electrical connection structure for power supply and control to the nozzle valve body opening/closing operation motor M1 etc. described in "1" is similar to the nozzle valve body opening/closing operation motor M1, etc.
The motor is housed in a watertight state in a motor housing space 20q formed at the rear of the motor.

Next, the configuration of the cord protection cable 23s having a multicore structure will be described.

As shown in FIGS. 6 and 12, the cord protection cable 23s to the jet nozzle 2 has the aforementioned nine power supply/control cords a+b+c+d+e inside.
*f+g are arranged radially or annularly.

Further, the cord protection cable 23s is preferably provided with an air conduction tube 231 made of a polybdenum tube at its center.

One end of the cord protection cable 23s is connected to a control section C disposed within the functional section unit 9, a power source, etc.

Therefore, the motor storage space 20q and the space inside the functional unit 9 are communicated with each other through the air passage pipe 23s-1, and as will be described later, the nozzle valve body opening/closing operation is performed from the nozzle casing 23. motor M1 etc. can be easily taken out.

Further, the cord protection cable 23g is surrounded by a stainless steel protection spring 23s-2 on its outer peripheral surface, and the protection spring 23s-2 prevents the cord protection cable 23s from being damaged by mice or the like. can.

(Integrated removal structure of components in the nozzle casing from the bathtub body side) In this embodiment, the present embodiment further includes inspection and repair of the jet nozzle 2, particularly a mortar for opening and closing the nozzle valve body.

The nozzle casing 20
The throat part 59, the air mixing part 70, the jet forming part 50, the motor stand for opening and closing the nozzle valve body, and the electrical connection structure are integrated into the bathtub body 1! ! It is configured so that it can be taken out from 4.

That is, as is clear from FIG. 6, the nozzle casing 20 is divided into four stages from the bathtub body 1 side to the nozzle valve element opening/closing operation motor M1 side.
, 02. D4+ os is gradually decreased.

Then, a motor mounting block 29 with the minimum outer diameter, which has the nozzle valve body opening/closing motor M1 attached thereto, is installed at the fourth inner diameter D4, and a valve seat forming block with an intermediate outer diameter is installed at the third inner diameter D3. A rear wall 21 of the cylindrical body 21 is installed, and a front portion 21g of the valve seat forming cylindrical body 21 having the maximum outer diameter and a throat fixing member 25 are installed at the second inner diameter Df.

Therefore, first, the decorative cover 26 can be easily attached to the nozzle mounting cylinder 1 by rotating it in the loosening direction using a wrench or the like.
After removing it from i, if you pull the throat 24, the fixing ring 28 and the throat fixing member 2 will be inserted into the bathtub body l.
Both 5 and t can be removed from the nozzle casing 20.

Thereafter, as shown in FIG. 6a, insert your finger into the inner air inlet 21c of the valve seat forming cylinder 21, and connect the cylinder 21, the jet Il1 node valve body 22, the motor mounting block 29, and the nozzle valve body. The opening/closing motor can be physically removed from the nozzle casing 20.

In the above configuration, the motor storage space 20Q located at the rear of the nozzle casing 20 is kept watertight, so if it is left as it is, the bathtub body of the motor mounting block 29 to which the nozzle valve opening/closing operation motor M1 is attached I
Removal to the side is difficult because negative pressure is generated within the motor storage space 20q.

However, in this embodiment, as described above, even if the inside of the motor storage space 2Oq is maintained in a watertight state, when the motor M for advancing and retracting the valve body is taken out from the nozzle casing 20 into the bathtub body l, air is removed. is the cord protection cable 23
Since the air flows into the motor storage space 20q of the nozzle casing 20 through the air conduction pipe 23s-2 provided in the air conduit 23s-2, it is possible to reliably prevent negative pressure from being generated in the space 2Oq. The opening/closing motor M1 can be easily removed.

Similarly, the nozzle valve body opening/closing operation motor M is connected to the cord protection cable 23s via the multiple folded flat cable 23r. , the nozzle casing 2o of the nozzle valve body opening/closing operation motor M1 can be easily removed and attached.

In this way, inspection and repair work of the nozzle valve body opening/closing operation motor h can be easily and reliably performed.

In addition, after the inspection and repair work is completed, the jet nozzle 2 can be easily assembled by following the above-mentioned procedure in reverse.

On the other hand, since the watertightness of the nozzle casing 20 is sufficiently ensured, the safety of the bather inside the bathtub body 1 can also be sufficiently ensured.

The foot side jet nozzle 2.2 has been described above, but the dorsal and ventral other jet nozzles 3, 3, 4.4 are also configured in the same manner as the jet nozzle 2.2, and are equipped with a water leak sensor. 2
Due to the presence of 3ν, the motor M for opening and closing the valve body for the nozzle
Personal accidents due to electrical leakage from the bathtub body 1 to the bathtub body 1 can be prevented.

[Ejection nozzle drive control method]

Hereinafter, a method of controlling the drive of the jet nozzles 2, 2.3, 3, and 4.4 having the above configuration, which constitutes the gist of the present invention, will be explained.

(Initial operation when power is turned on) First, jet nozzles 2, 2, 3, 3, 4 when 111m is turned on.
．． The initial operation of step 4 will be explained.

Here, when the power is turned on refers to when the plug is connected to an AC power outlet, and normally after the bubble generating bathtub A is shipped from the factory and installed in a home or hotel, the plug is not removed. Since there are many cases, this is essentially the time when such a bubble-generating bathtub A is installed.

The initial operation will be specifically described below with reference to the flowchart shown in FIG.

First 1. When the plug is connected to the outlet and the power is turned on (211), each jet nozzle 2, 2.3, 3°4
．． When the valve drive detection sensor S1 in 4 is turned on (
Normally, the jet nozzles 2, 2, 3, 3, 4, 4 are set in the open position at the factory) (212Y), and as will be described later, the jet nozzle 2 is operated in A operation with high voltage and low speed and high torque. , 2, 3, 3.4.4 in the valve closing direction (213
).

As a result, oil and the like stuck to the spout amount regulating valve body 22 and the like when the bubble generating bathtub A is shipped from the factory is peeled off, thereby ensuring normal operation of the spout nozzles 2, 2, 3.3, and 4.4 thereafter. be able to.

Next, as a result of driving in the valve closing direction in A operation for a predetermined time (for example, 2.9 seconds), the valve drive detection sensor S1 turns OFF.
If (215Y), the jet nozzles 2, 2, 3 are operated in B operation with low voltage, high speed, and small torque as described later.
．． 3.4.4 is driven in the valve closing direction 216) to cause step-out.

Therefore, gush i! To! The Ii valve element 22 can be brought into soft contact with the valve seat 21f, and damage to the injection amount adjusting valve element 22 and the valve seat 21f can be prevented.

In addition, after the step-out, a predetermined number of pulses of voltage is applied to the nozzle valve body opening/closing operation motor M, 4 to drive the ejection nozzles 2, 2.3, 3.4.4 in the valve opening direction, Stop the jet nozzle 2.2.3.3.4.4 at the fully open position (the valve body 22 for adjusting the jetting amount is located 6 mm apart from the valve seat 21f) (217). If the valve drive detection sensor s1 detects and outputs ON, the power-on initial operation is completed.

Next, by pressing the operation switch, an initial operation at the time of turning on the operation switch, which will be described later, is performed.

On the other hand, in the initial operation when the power is turned on, the valve drive detection sensor S1 in each jet nozzle 2, 2.3, 3, 4.4 is turned on due to poor maintenance at the time of factory shipment to the bubble generating bathtub, etc. If the current position of the jet nozzle 2.2°3.3.4.4 is unknown (212N), the jet nozzle 2.
2.3.3 and 4.4 are driven in the valve closing direction for a very short time (214).

By doing this, as much as possible, the oil and the like that stuck to the spout amount adjusting valve body 22 etc. when the bubble generating bathtub A was shipped from the factory is peeled off, and the subsequent spout nozzles 2.2, 3, 3.4.4
In addition, it is possible to prevent the valve body 22 and the valve seat 21f from being damaged by IR by inadvertently bringing the valve body 22 into contact with the valve seat 21f with a strong torque.

Then, the process moves to step (216) and the subsequent power-on initial operation is completed (217) (218)
.

In addition, if any of the valve drive detection sensors Sl is ONL in the above steps (215) and (218), the nozzle valve body opening/closing operation of the jet nozzles 2, 2, 3, 3, and 4. It is determined that there is an abnormality in the motor M1, and the operation of the motor M1 is stopped.

In this way, during the initial operation when the power is turned on, it is possible to reliably detect abnormalities in the jet nozzles 2, 2, 3, 3, 4.4, thereby increasing the reliability and safety of the subsequent blowing operation. can be guaranteed in advance.

Note that the jet nozzles 2, 2.
For example, the basic operations of 3, 3.4.4 are as follows:
Various driving modes can be set.

A operation・B operation・C operation・・・IOV±1. OV 50pps (1,25nv+/s) ・7v±0.5v 200pps (5ml++/s) -・IOV +1.0. V 150ρρs (3,75m/5) (i!!Initial operation when the switch is turned on) This initial operation when the operation switch is turned on is when the switch for bubble generation is turned on at the beginning of operation of the bubble generation bathtub. However, if a strong jet is suddenly ejected from the jet nozzles 2, 2, 3, 3, 4.4, accidents such as children and the elderly falling over inside the bathtub body are likely to occur, so no matter what type of jet is used, At the initial stage when the operation switch is turned on, the operation is performed in a mild manner (weak jet a>) that does not affect children, the elderly, etc., and the initial operation when the operation switch is turned on is the initial operation for the safety of such bathers. Refers to action.

Based on the flowchart shown in FIG. 15 and the time chart shown in FIG. , the operations in this flowchart are common and apply to the operations of each nozzle).

First, when the operation switch is turned on (311), the jet nozzles 2, 2.3, 3, and 4.4 are operated in the B operation mode for a time t1.
(for example, 1.6 m11) in the closing direction to bring the valve body 22 into contact with the valve seat 21f and step out (31 m11).
2).

Then, after a period of time (for example, 0.2 seconds) has passed, (3
13) , this time, time ti (for example,
For only 1.2 seconds, the jet nozzles 2.2, 3.3, 4.4
Move in the valve opening direction and stop at the fully open position (314)
.

When the jet nozzles 2, 2.3, 3, and 4.4 move to the fully open position and the valve drive detection sensor S1 turns on, (315
), the initial operation is completed.

After that, mild blow operation starts.

However, if the valve drive detection sensor S1 is not ONL (
315N), the motor M for opening and closing the nozzle valve body is determined to be abnormal and the morph is stopped (31G).

In this way, it is possible to reliably detect abnormalities in the blow nozzles 2.2.3 and 3.4.4 even during the initial operation when the operation is switched on, thereby ensuring the reliability and safety of the blow operation in advance. be able to.

(Speed control of the jet nozzle when the blow mode changes in blow operation? 11) Furthermore, in the present invention, when the blow operation changes from - one blow mode to another blow mode,
As shown in the figure, the rotational speed of the nozzle valve body opening/closing operation motor M1 of the jet nozzles 2, 2.3, 3.4.4 starts changing at the same time as the rotational speed of the driving i-ring pump P.
), in any blow mode, the speed changes in the following operating manner.

Therefore, the transition between blow modes can be made smooth, and the feeling of bathing is less likely to be affected.

D operation...10V+1. O.V. 63GIGI3 (1,575mm/s)

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall configuration of the bubble generating bathtub according to the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is a side view showing the state of connection between the jet nozzle and the functional unit by piping and a cord protection cable. Figure 4 is a block diagram showing the conceptual configuration of the bubble generating bathtub, Figure 5 is an explanatory diagram showing the air suction structure to the jet nozzle, Figure 6 is an enlarged sectional view of the jet nozzle, and Figure 6a is the jet nozzle. An explanatory diagram of removal work inside the nozzle, Fig. 7 is a side view of the jet nozzle, Fig. 8 is a cross-sectional view taken along line 1-1 in Fig. 6, and Fig. 9 is an enlarged cross-section of the motor for opening and closing the valve body for the nozzle. Figure 1θ is a front view of the motor casing, Figure 11 is a sectional view taken along line ■-■ in Figure 10, Figure 12 is a cross-sectional view of the cord protection cable, Figure 13 is a cross-sectional view of the flat cable, FIG. 14 is a flowchart of the initial operation when the power is turned on, FIG. 15 is a flowchart of the initial operation when the operation switch is turned on, and FIG. 16 is a timing chart of the initial operation. In the figure, A: Bubble generating bathtub MI = Nozzle valve body opening/closing operation motor P: Circulation pump Sl: Valve drive detection sensor l: Bathtub body 2.2.3, 3.4, 4: Spout nozzle lO: Bath Hot water suction flow path Bath hot water forced flow flow path Nozzle casing Cylindrical body for forming valve seat Valve body for adjusting spout amount

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. Then, the end of the forced bath water flow path is opened into the bathtub body to form a jet nozzle, and an air intake part is connected in communication with the forced bath water flow path, so that bath water mixed with air bubbles is discharged from the jet nozzle. In a bubble-generating bathtub configured to be able to eject water into the bathtub body, the ejection nozzle is an automatically variable ejection amount nozzle, and the automatically variable ejection amount nozzle is provided with a sensor for detecting valve drive, and the control section has the following features. A bubble-generating bathtub capable of safely controlling an initial jet flow, characterized by being equipped with a jet nozzle initial drive program. ``When the operation switch is turned on or the power is turned on, a drive voltage lower than the normal drive voltage is applied to the motor for opening and closing the valve body for the jet nozzle to rotate it in the valve closing direction, and the valve body is placed in the fully closed position. The valve body is moved to the valve seat and brought into contact with the seat to cause it to step out, and then the normal drive voltage is applied to retract the valve body to the set open position. During the execution of the above initial drive program, the valve drive detection sensor constantly controls the amount of ejection automatically. It detects whether or not there is an abnormality in the variable nozzle, and if there is an abnormality, it stops driving the motor that opens and closes the nozzle valve body.