JPH0326269A - Exhaust nozzle structure in bubble generating bathtub - Google Patents

Abstract

PURPOSE:To prevent an abnormal jet state by providing a position detecting sensor on a nozzle valve body opening/closing operation motor for opening and closing an exhaust nozzle, and detecting abnormality of said motor. CONSTITUTION:In order to control a position of an exhaust quantity control valve body 22 without causing an error, the valve body 22 is pressed against a valve seat 1a being in a completely closed position being a reference position, brought to step-out and initialized, and by a control part C, the number of pulses from the reference position of a nozzle valve body opening/closing operation motor M1 is calculated and a valve body position is controlled. A valve body reference position detecting sensor 23f converts a magnetic force variation between a valve body position Hall element 23i and a valve body position detecting magnet 23j, which is varied in accordance with an advance/retreat operation of a valve body supporting rod 23d, to an electrical variation and sends it to the control part C, and decides whether the value body position is normal or not. As a result, if a result obtained by calculating the number of pulses and a result of detection of the valve reference position detection sensor 23f are different from each other, an operation of the exhaust quantity control valve body 22 is stopped, and also, it is warned to be in a fault state.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a jet nozzle structure in a bubble-generating bathtub. (B) Conventional technology Conventionally, as described in Japanese Patent Application Laid-open No. 59-135058, bubble-generating bathtubs have a system in which bath water is sucked between the bathtub body and a circulation pump installed outside the bathtub body. A bath water circulation path consisting of a vibrator and a forced bath water supply pipe is provided, and an air intake part is provided in the middle of the forced bath water pipe. Some bathtubs are designed to eject water from a nozzle into the bathtub body, and at the same time mix it with air sucked in from an air intake to eject bath water mixed with bubbles. In such a bubble-generating bathtub, the circulation pump is operated by the bather to circulate the bathwater, and at the same time, the bathwater is spouted from the bathwater forced-feeding pipe through the spout nozzle, and at the same time from the air intake section. Air is inhaled and mixed to produce a jet stream containing bubbles. Furthermore, various forms of the jet flow containing bubbles can be obtained by combining the rotational speed of the circulation pump and the opening degree of the opening/closing valve body of the jet nozzle. (C) Problems to be Solved by the Invention However, since the operation of the opening/closing valve body of the jet nozzle is performed using a valve body opening/closing motor attached to each nozzle,
If such a motor operates abnormally, an unexpected amount of bubble jet and
A bubble jet pressure was generated. Then, the amount of bubble jet
The pressure caused discomfort to bathers and was also extremely dangerous to the elderly and young children. (two)! Means for Solving Problem II In the present invention, a bath water circulation flow path consisting of a bath water suction vibrator and a bath water forced-feeding pipe is interposed between the bathtub body and the circulation pump, and the bath water forced-feeding pipe is inserted between the bathtub body and the circulation pump. The terminal end of the vibrator is opened inside the bathtub body to form a jet nozzle, and the air intake part is connected to the bath water circulation flow path so that bubble-filled bath water can be jetted from the nozzle into the bathtub body. In the bubble-generating bathtub, the motor for opening and closing the nozzle valve body, which opens and closes the jet nozzle,
The present invention aims to provide a jet nozzle structure for a bubble-generating bathtub that is configured to be able to prevent abnormal jet flow conditions by providing a position detection sensor and detecting abnormalities in the motor. (e) Functions and Effects In the present invention, the circulation pump is operated by the bather operating the operation panel section, and while the bath water is being forcedly circulated, air is taken in from the air intake section and a jet of bubbles is emitted from the jet nozzle. It is to be ejected as appropriate. By adjusting the degree of opening and closing of the motor for opening and closing the nozzle valve body provided in each jet nozzle, and by combining this with the rotation speed of the circulation bomb to obtain various types of jet flow, it is possible to take a comfortable bubble bath. I'm trying to make it possible. In particular, in the present invention, since the motor for opening and closing the valve body for the nozzle is provided with a position detection sensor, if an abnormality occurs in the motor, bath water with an unexpected amount and pressure is ejected from the ejection nozzle. When doing so, the position detection sensor detects an abnormality in the motor in advance and takes necessary measures such as issuing a warning or
Alternatively, by reducing the operation of the circulation bomb or opening the jet nozzle, the danger or discomfort to the bather etc. can be eliminated, and a comfortable and safe bubble bath can be performed. (f) Embodiment An embodiment of the present invention will be explained in detail based on the drawings. First, the overall structure of the bubble-generating bathtub according to the present invention will be explained in detail. A shown in FIG. 1 is a bubble-generating bathtub according to the present invention, and the bubble-generating bathtub A is equipped with feet that automatically vary the amount of ejection, respectively, on the front and rear walls and left and right side walls of the bathtub body 1, which is formed in a box shape with an open top. Six lateral, transgressive, and ventral jet nozzles 2.2.3, 3, and 4.4 are provided. The bathtub main body 1 has a brim-shaped green part 1a of a constant width formed on the periphery, an air intake part 5 at the foot side corner of the green part 1a, and a raised part approximately at the center of the left and right side walls. Part 1b. 1b, and ventral jet nozzles 4, 4 are provided on the inclined surfaces 1b' and lb' facing the rear wall (dorsal side).
is installed facing the rear wall. Moreover, the ventral side jet nozzle 4 is installed at a higher position than the other foot side and dorsal side jet nozzles 2.3, so that bath water can be reliably applied to the legs, chest, and other parts of the human body. It is configured so that it can be done. In addition, such a bubble-generating bath f! A pump protection case 6 is provided outside A, and inside the case 6 are a circulation bomb P that circulates the bath water, a filter 7 that filters the bath water circulated by the bomb P, and a filter 7 that filters the bath water that is circulated by the pump P. Pump P
A pump drive motor M that drives the motor M, a motor for opening and closing the valve body for the nozzle, which will be described later, and an air intake part 5.
A control unit C is provided for controlling the motor for opening and closing the valve body for adjusting the amount of air bubbles provided therein, and the driving of the electric three-way valve 8 and the like.

Further, a bath water circulation channel is interposed between the circulation pump P and the bubble generating bath FA.

That is, the bath water circulation flow path includes a bath water suction pipe 9 for sending bath water from the bubble generating bathtub A to the circulation pump P, and a bath water forced feeding pipe for sending bath water from the circulation pump P to the bath bath A. It consists of a pipe 10. The bath water suction pipe 9 has one end connected to the suction port 11 opened at the bottom of the bathtub body l, and the tth end connected to the water intake port 11 of the circulation pump P to supply bath water to the circulation pump P. On the other hand, the bath water forcing pipe 10 has one end communicating with the water outlet of the circulation pump P, and the other end communicating with the jet nozzle 2, 3, 4, respectively. In addition, the above-mentioned suction port 1l is connected to the foot side/dorsal side jet nozzle 2.
, 3 is installed at a lower position. Further, an inverter E is interposed between a pump drive motor M that drives the circulation pump P and the control unit C, and the rotation speed of the circulation bomb P is controlled by changing the output frequency of the inverter E. This allows the rotational speed of the circulation bomb P to be changed smoothly and reliably. In addition, in the middle of the bathtub forced vibrator 10, the same vibrator 10
Pressure detection sensor l that detects the water pressure of bath water being pumped into the interior
2, and the detection results from the sensor 12 are sent to the control unit C.
The control unit C controls the jetting pressure of the bath water spouted from each jetting nozzle 2.3.4 by changing the rotation speed of the pump driving motor M and the opening/closing amount of each jetting nozzle 2.3.4. , and is configured to perform that control. In addition, in the middle of the bathtub forced vibrator 10, the same vibrator lO
A bath water temperature detection sensor T is installed to detect the temperature of the bath water pumped into the interior, and the detection result from the sensor is sent to a control section C, which controls the pump driving motor M and each jet nozzle 2, 3.4 control is performed. By using such a bath water temperature detection sensor T, the control unit C starts and stops blowing operation, sintering prevention operation, filter cleaning operation, and automatic filter cleaning operation according to the temperature condition of the bath water. I try to do this. As described above, the blow operation, sintering prevention operation, filter cleaning operation, and automatic filter cleaning operation by the control unit C are set so that they will not start if the bath water does not reach a certain water level and water temperature. I have to.

Next, the structure of control section C will be explained in detail. The control unit C includes a microprocessor MPυ, an input/output interface alb, a ROM, and an I? It consists of memory C consisting of AM and timer d. In the above structure, the input interface a is connected to each sensor and the operation panel l5, and the output interface b is connected to each motor M, Ml,
The electric three-way valve 8 and the drive part of the filter 7 are connected. The memory C also stores information about each motor M based on the output signals from each sensor and the drive signal from the remote controller l7. It stores a drive sequence program for driving M1, electric three-way valve 8, filter 7, etc. Furthermore, in this embodiment, a plurality of intake pipes 13 are interposed between the air intake section 5 and each of the jet nozzles 2, 3.4, as shown in FIG. Intake pipe 13
Forms a branch pipe 14 extending from the middle toward each of the jet nozzles 2, 3.4, and connects the tip of each branch pipe 14 to each jet nozzle 2, 3.4.

Then, using the negative pressure generated when the bath water is spouted from each jet nozzle 2, 3.4, the air taken in from the air intake part 5 is
It passes through each branch pipe 14 of the above-mentioned intake pipe 13 and is sucked into each jet nozzle 2, 3.4, so that bath water mixed with air bubbles can be jetted out. Further, in the vicinity of the bathtub body 1, that is, at the foot-side corner of the edge 1a, as shown in FIG. It allows you to perform driving operations. Reference numeral 16 denotes an infrared receiving section provided in the operation panel section 15, which receives infrared rays emitted from the remote controller 17. Furthermore, the foot side, betrayal, and ventral side jet nozzles 2, 3, and 4 each use the same automatic variable jet volume jet nozzle that is configured to be able to automatically change the jet volume and jet pressure of bath water. Based on the following, the structure of the foot-side jet nozzle 2 will be explained. That is, the one leg side jet nozzle 2 is
A cylindrical nozzle casing 20 is connected to the foot-side spout nozzle connection port tg of the bathtub body 1 in a cantilevered manner on the outside of the bathtub body 1, and a bath water forced-feeding vibrator lO is inserted into the nozzle casing 20. A jet forming part 50 that forms incoming bath water into a jet communicates with the air intake part 5 through an intake pipe l3, and air mixes into the bath water spouted from the jet forming part 50. The mixing section 70 and the throat section 60, which determines the direction in which the bath water mixed with air bubbles is spouted from the air mixing section 70 into the bathtub body 1, are on guard. As shown in FIG. 3, the nozzle casing 20 has its front end connected in a watertight manner to the circular foot-side jet nozzle connection port 1g opened at the lower part of the front wall of the bathtub body 1, and its rear end extended rearward approximately horizontally. It's being stretched. Ih is foot side jet nozzle connection port 1g
11 is a ring-shaped female threaded part attached to the rear surface of the packing lb, 20a is an outer peripheral male threaded part formed on the outer peripheral surface of the front end of the nozzle casing 20, and 20c is a ring-shaped female threaded part fitted to the periphery of the nozzle casing 20. This is a pipe connection part that removably connects forced hot water pipes. 26 indicates a cosmetic cover. The throat portion 60 also includes a throat 24 and a throat fixing member 25 that supports the throat 24 in a swing-adjustable manner.
and the front part of the valve seat forming cylinder 2l. 24a is a throat base having a spherical outer peripheral surface;
5a is the inner jlffi of the throat fixing member 25 and the valve seat-shaped cylinder body 2 to slidably support the throat base 24a.
Throat support surfaces 24b each formed on the inner circumferential surface of 1.
is a cylindrical throat tip whose outer diameter is smaller than that of the throat base 24a, and the throat tip 24b can be manually adjusted to swing in any direction up, down, left or right around the base 24a.

Moreover, the throat base 24a has a throat support surface 25.
A constant sliding resistance acts from a, allowing the throat 24 to be stopped at any swing angle.

S represents the outer peripheral surface of the throat tip 24b and the decorative cover 26.
This is the space for throat swing operation formed between the inner peripheral surface of the Further, the throat fixing member 25 is attached to the nozzle casing 20
The throat 24 is fitted onto the front inner peripheral surface of the decorative cover 24 through a positioning groove, and the front surface is fixed to the rear end of the decorative cover 26 via a fixing ring 28. The front outer peripheral surface of the base 24a is slidably supported. Further, the valve seat forming cylinder 2l is inserted into and taken out from the center of the nozzle casing 20 through the front end opening of the nozzle casing 20, and the rear end surface is attached to the forced-feeding vibe connecting portion 2.
0c, and a protruding step 2lb formed on the front outer circumferential surface engages with a concave step 201 formed on the inner circumferential surface of the nozzle casing 20 to restrict backward sliding. ．． Then, the throat base 24a is fitted onto the throat support surface 25b formed on the front inner circumferential surface of the valve seat-shaped command cylinder 2l,
The throat base 24a, whose forward sliding is restricted by the throat fixing member 25, restricts the forward sliding of the valve seat-shaped cylindrical body 2l. In addition, the jet-type control part 50 includes a valve seat 21a having a jet-type flow path 27 therein, and a valve seat 21a having a jet-type flow path 27 therein.
an ejection amount regulating valve body 22 that approaches and separates from 1a to adjust the opening/closing amount (adjusts the ejection amount and ejection pressure) of the jet flow forming channel 27;
It consists of a nozzle valve opening/closing motor Ml that opens and closes the jetting amount regulating valve 22, and a rear wall forming plate 29 that supports the motor 1. In addition, 21d is an air inflow path formed in an annular shape along the outer peripheral surface of the valve seat forming cylinder 2l, and 21e and 21f are connected to the intake pipe connecting portion 2Ob side in the air inflow path 21d and the connecting portion 20b. These are air inlets provided on opposite sides, and communicate between the inside of the valve seat-shaped cylinder 21 and the intake pipe connecting part 20b through the air inlets 21e and 21f, and the valve seat-shaped cylinder 2l An air mixing section 70 is formed inside. m
indicates the direction of air inflow. In addition, the old nozzle valve body opening/closing operation motor is a stepping motor that operates step by step for each input pulse, and a cylindrical motor casing 23 is removably attached to the rear wall forming plate 29.
3, a cylindrical coil 23a is inserted into the nozzle casing 20.
A cylindrical magnet 23b is disposed within the coil 23a, and by exciting the coil 23a, the magnet 23b can be rotated forward and backward, and a cylindrical rotor nut 23c is disposed within the magnet 23b. The rotor nut 23c is mounted concentrically and integrally, and the rotor nut 23c is rotatably supported by a bearing 23e.
A valve body support rod 23d, which has a valve body 22 for adjusting the jetting amount attached to its tip, is inserted into the inside of the valve body 3c so as to be slidable forward and backward. A spiral rotor nut side ball groove 23k is formed on the inner peripheral surface of the rotor nut 23c, while a rotor nut side ball groove 23k is formed on the outer peripheral surface of the valve body support rod 23d.
A spiral rond side ball groove 23m is formed in the same direction as the rotor nut side ball groove 23m, and a plurality of balls 23n are freely disposed between the rotor nut side ball groove 23k and the rond side ball groove 23p which are opposed to each other.

23g, the valve body support loft 23d is attached to the rotor nut 2.
This is a rotation regulating piece that prevents rotation with 3c. In addition, in this embodiment, in order to control the position of the injection amount regulating valve body 22 without error, the valve body 22 is pressed against the valve seat 21a, which is in the fully closed position as the reference position, and is caused to step out of alignment. The controller C calculates the number of pulses (rotation angle) from the old reference position of the motor for opening and closing the nozzle valve body to control the position of the valve body. Further, at the rear end of the valve body support rod 23d, the amount of movement of the valve body support rod 23d, that is, the opening/closing amount of the valve body 22 for adjusting the jet amount due to the forward and backward movement of the valve body support rod 23d (the amount of opening and closing of the valve body 22 for adjusting the jet amount) A valve body reference position detection sensor 23f is installed to detect the ejection pressure (tyun), and the same detection sensor 2
3f is composed of a valve body position Hall element 23i and a valve body position detecting magnet 23J attached to the rear end position of the valve body support ring 23d opposite to the same position Hall element 23i. 23h is a cord connected to the coil 23a and the valve body position detection sensor 23f. The valve body reference position detection sensor 23f converts the change in magnetic force between the valve body position Hall element 23i and the valve body position detection magnet 23j, which changes according to the movement of the valve body support rod 23d back and forth, into an electrical change. The data is converted and sent to the control unit C to determine whether the valve body position is normal. As a result, if there is a difference between the result obtained by calculating the number of pulses and the detection result of the valve body reference position direct detection sensor 23f, the operation of the valve body 22 for regulating the ejection amount is stopped, and the failure occurs. I am trying to warn you of the situation. In addition to the above-mentioned structure, a valve body position Hall element 23i that changes according to the forward and backward movement of the valve body support iron 23d by a valve body reference position detection sensor 23f, and a valve body position detection magnet} 23j. It is also possible to convert the change in the magnetic force between them into an electrical change and send it to the control unit C to detect the reference position (for example, the fully closed position). With this structure, the old motor for opening and closing the valve body for the nozzle energizes the coil 23a to rotate the rotor nut 23c together with the magnet 23b, and moves the valve body support rod 23d forward and backward in conjunction with the rotation of the rotor nut 23c. Then, the spout adjustment valve body 22 attached to the tip of the valve body support rod 23d is moved toward and away from the valve seat 21a, so that the spout amount and spout pressure of bath water into the bathtub body 1 can be adjusted. ing. In addition, as the old nozzle valve body opening/closing operation motor, the jet amount adjustment valve body 22 is moved forward and backward steplessly over a minute distance,
It only needs to be able to finely adjust the amount and pressure of the bath water, and a piezoelectric actuator can also be used. Further, 40 is a bellows-shaped waterproof cover that is integrally formed with the valve body 22 for regulating the amount of ejection, and 20■ is an air breathing port. Also,
The rear wall of the nozzle casing 20 described above is formed by a rear wall forming plate 29 that is separate from the nozzle casing 20, and the rear wall forming plate 29 has a diameter that is approximately the same as the inner diameter of the rear end of the nozzle casing 20. It has a disk shape and is fitted into the front end opening of the nozzle casing 20 so that it can be installed and removed freely. 20g is a rear wall or plate regulating piece 21 formed on the inner peripheral surface of the rear end of the nozzle casing 20.
29a is a packing provided on the circumferential surface of the rear wall-shaped restraining plate 29. Further, the outer diameter of the motor casing 23 is smaller than the inner diameter of the rear end opening 20k of the nozzle casing 20 formed by the inner peripheral surface of the rear wall type plate 29. With the above configuration, the foot side jet nozzle 2 can be disassembled from inside the bathtub body 1. In addition, the dorsal and ventral jet nozzles 3 and 4 are constructed in the same manner as the jet nozzle 2 described above, and are used to adjust the amount of hot water spouted and the hot water spout pressure. ) 1 section.

In the present invention, the valve body reference position detection sensor 23f provided on the nozzle valve body opening/closing operation motor h1 is capable of detecting abnormalities in the old motor. That is, as shown in FIG. 4, the nozzle valve element opening/closing operation motor Ml is provided with a valve element support rod 23d that moves forward and backward the ejection amount adjusting valve element 22, and the base of the support rod 23d. A valve body reference position detection sensor 23F is attached to the end. The valve body reference position detection sensor 23f converts the change in magnetic force between the valve body position Hall element 23i and the valve body position detection magnet 23j, which changes according to the movement of the valve body support rod 23d back and forth, into an electrical change. The data is converted and sent to the control section C, which then determines the position of the valve body. Further, if the valve body position is not normal, based on the determination, abnormal jet flow from the jet nozzle is prevented.

In this embodiment, an alarm H is connected to the control unit C, and the control unit C
Based on the determination, an activation signal is sent to the alarm H from the output interface, the alarm H issues an alarm to the bather, and the bather stops the blow operation.

In addition, as another embodiment, the operation of the bomb drive motor M of the circulation pump P is controlled by the control unit C, and the motor M
is rotated at a low speed to reduce the amount of hot water spouted out. Furthermore, the control unit C operates the nozzle valve element opening/closing operation motor Ml to open the valve element and lower the bath water ejection pressure.

In addition, in the present invention, the motor h1 for opening and closing the valve body for the nozzle
A coil 23a for moving the valve body forward and backward is provided,
It is also possible to detect abnormalities in the current flowing through the coil 23a.

By detecting an abnormality in the current, an abnormality in the nozzle valve opening/closing motor H1 is detected, and the above-mentioned means are used to prevent abnormal jet flow from the jet nozzle. Further, in the present invention, the valve body reference position detection sensor 23F is
Although the valve body position Hall element 231 and the valve body position detecting magnet 23j are used as the structure, other embodiments include a ribot switch, a microswitch, a potentiometer, a rotary encoder, etc.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a bubble-generating bathtub according to the present invention, and FIG.
The figure is a conceptual diagram of the bubble generating bathtub, FIG. 3 is a sectional view of the jet nozzle, and FIG. 4 is an enlarged sectional view of the main parts. In the figure, A: Bubble generating bathtub p: IIi 1-ring pump C: Control unit 1: Bathtub body 2: Foot side jet nozzle 3: Back side jet nozzle 4: Ventral side jet nozzle Ml: Nozzle valve body opening/closing motor 23f : Valve body reference position detection sensor

Claims (1)

[Claims] 1. A bath water circulation flow path consisting of a bath water suction pipe and a forced bath water supply pipe is interposed between the bathtub body and the circulation pump, and the terminal end of the forced bath water supply pipe is provided. A bubble-generating bathtub, which has an opening in the bathtub body to form a spouting nozzle, and an air intake part is connected in communication with a bathwater circulation flow path, so that bathwater mixed with bubbles can be spouted from the nozzle into the bathtub body. A spout nozzle structure for a bubble-generating bathtub in which a position detection sensor is provided on a motor for opening and closing a nozzle valve body that opens and closes a spout nozzle, and an abnormal jet state can be prevented by detecting an abnormality in the motor. .