JPH0326261A - Bubble generating bathtub - Google Patents

Abstract

PURPOSE:To reduce an electric shock accident caused by a high frequency component and to obtain the bubble generating bathtub at a low cost by forming a pump driving device connected to a circulating pump by a DC motor which can control a speed by a field control. CONSTITUTION:In a bubble generating bathtub A, a DC motor which can vary the speed of revolution of a circulating pump P by a field control is used as a pump driving device for driving the circulating pump P. That is, an AC power source 50 is connected to a DC motor and a field coil 55 for forming the pump driving device M through lines 51, 52 to which a rectifier 53 and an exciting device 54, and also, to the exciting device 54, a phase delay adjusting circuit 57, and to this adjusting circuit 57, a control part C is connected. According to such a constitution, by adjusting the phase delay quantity (d) at the time of rectification, a DC voltage after the rectification can be adjusted freely, and by adjusting the number of times of oscillation and time, a chopper control is executed, and also, by connecting a variable resistor to the exciting device 54 and controlling it by a control signal from the control part C, a voltage becomes variable, and the speed of revolution of the DC motor can be variable freely.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a bubble-generating bathtub which is highly safe during bathing and is capable of blowing at low cost.

(B) Conventional technology Conventionally, as one form of bathtub, there is a bubble-generating bathtub that is equipped with a bubble-generating device separate from the bathtub body, and the bubble-generating bathtub uses the bubble-generating device to generate bubbles in the bathtub. As a result, air bubbles can cause the body's ma. 7 surge, etc.
It is used to enhance the feeling of bathing.

That is, such a bubble-generating bathtub is provided with a spout on the side wall of the bathtub body, a circulation pump that circulates bath water via a circulation pump is connected to the spout, and an ejector effect is installed near the spout. An air suction unit is installed that allows air to be mixed into the bath water.

With this structure, bath water can be spewed out from the spout on the side wall of the bathtub body by operating the circulation pump, and when the water is spouted, air is suctioned under negative pressure from the air suction part, so that the water can be soaked in the bath water. By mixing air into the bathtub and ejecting the air-mixed bath water from the spout, bubbles are generated in the bathtub and applied to the body of the bather, thereby increasing the massage effect. In recent years, as described in Utility Model Application No. 63-100035, the ejection force of bath water can be changed periodically by controlling the electric motor used as a pump drive device for driving the W1 ring pump using an inverter. There are also proposals that can be made. (c) Problems to be Solved by the Invention However, the above-mentioned bubble-generating bathtub still had the following drawbacks. That is, in the above-mentioned bubble-generating bathtub, when the electric motor is controlled by an inverter in order to change the spouting amount and jetting pressure of bath water, the high frequency generated during the switching operation of the switching element causes the communication between the bathtub and the circulation pump to be reduced. If the insulation is not sufficient, current will leak to the bathtub side, increasing the risk to the human body. Furthermore, since inverters are still expensive, bubble generating bathtubs are also expensive. An object of the present invention is to provide a bubble-generating bathtub that can solve the above problems. (2) Means for Solving the Problems The present invention provides a bath water circulation flow path consisting of a bath water suction flow path and a bath water forced flow path between the bathtub body and the circulation pump. An air intake section is connected in communication with the forced flow channel, and the air taken in by the air intake section is mixed into the bath water in the bath water forced flow channel, and air bubbles are mixed into the bathtub body from each jet nozzle. This invention relates to a bubble-generating bathtub capable of spouting bath water, characterized in that the pump drive device connected to the circulation pump is formed by a DC motor whose speed can be controlled by field control. (e) Functions and Effects In the present invention, the rotation speed of the circulation pump is changed by field control using a thyristor rectifier, a phase delay adjustment circuit, an oscillator, and a variable resistor as a pump drive device for driving the circulation pump. It is formed by a DC motor that can.

Therefore, by adjusting the amount of phase delay during rectification, the number of oscillations, and the resistance, the rotation speed of the circulation pump can be easily changed, and the amount and pressure of the bath water spouted can be arbitrarily changed. You can enjoy various blow types. See you again, Kai! Since it uses a DC motor based on ffill, it is possible to change the blow mode without inverter control, and the possibility of life-threatening electric shock accidents caused by high frequency vibrations can be reduced as much as possible. Furthermore, since an expensive inverter is not required, the bubble generating bathtub can be manufactured at low cost. (f) Example Hereinafter, the bubble-generating bathtub A according to the present invention will be specifically explained with reference to the example shown in the attached drawings. Figures 1 and 2 show the overall structure of the bubble-generating bathtub A. The bubble-generating bathtub A has a box-shaped bathtub body L with an opening on the top, and a foot-side wall on the front and rear walls and on the left and right side walls, respectively. Spout nozzle 2, dorsal spout nozzle 3. A ventral jet nozzle 4 is provided.

The bathtub body 1 has a flange-like edge 1 having a constant width on the periphery.
a, and an air intake portion 5 is provided on the same edge portion 1a. Further, the air intake portion 5 is provided with a bubble Nm regulating valve Va and a bubble amount regulating valve element driving motor M2 that drives the regulating valve Va. In addition, the bubble-generating bathtub A is provided with a pump protection case 9 on the outer periphery of the bathtub body 1. Inside the case 9, there is a circulation pump P that circulates the bath water in the bathtub body 1, and a pump protection case 9. a filter R that filters the bath water circulated by the circulation pump P;
A pump drive device M that drives the pump P, and a motor M that drives the pump drive device M and a nozzle valve body forward and backward, which will be described later.
1. A control unit C that controls the driving of the motor M2 for driving the valve body for adjusting the amount of air bubbles and the electric three-way valve Q is provided.

Note that Ql is a waste pipe for discarding part of the bath water during backwashing. And between the bathtub body 1 and the circulation pump P mentioned above, there is a bath water? A reflux path D is interposed therebetween.

That is, the bath water circulation flow path D includes a bath water suction pipe (bath water suction flow path) 10 for sending bath water from the bubble-generating bathtub A to the circulation pump P, and a bath water suction pipe (bath water suction flow path) for sending bath water from the bubble generation bathtub A to the circulation pump P. It consists of a 1 liter forced bath water pipe (bathtub forced flow channel) for sending hot water.

The bath water suction pipe 10 has one end opened at the bottom of the bathtub body l to form a suction port 22, and the other end communicates with the water supply port of the circulation pump P to suck bath water into the circulation pump P. That's what I do.

On the other hand, the forced bath water pipe 11 has one end connected to the circulation pump P.
The other end is connected to the spout nozzle 2, 3, and 4 on the foot side, dorsal side, and ventral side, respectively. Furthermore, as shown in FIG. 3, the pump driving device M of the circulation pump P is equipped with a rotation speed detection sensor 6 for detecting the rotation speed of the circulation pump P, and the detection output from the detection sensor 6 is It is sent to a control section C which will be described later, and the rotation speed of the circulation pump P is controlled by the control section C.

Furthermore, as shown in FIG. 3, a pressure detection sensor 12 for detecting the pressure of the bath water being forced into the pipe 11 is installed in the middle of the pipe 11. Then, a detection signal from the pressure detection sensor l2 is sent to a control section C, which will be described later, and the control section C controls the ejection pressure of the bath water ejected from each ejection nozzle 2.3.4 of the pump drive device M. It is controlled by changing the rotational speed and the position of the valve body for adjusting the jet amount of the foot, dorsal, and ventral jet nozzles 2, 3, and 4. Moreover, the pressure detection sensor 12 can also be used as a water level sensor for detecting the level of bath water in the bathtub body 1. These jet nozzles 2, 3.4 are capable of automatically changing the jet amount and jet pressure of bath water, respectively. It uses a jet nozzle that automatically adjusts the jet amount and has the same structure as the original. Further, as shown in FIG. 3, an intake pipe 5a from an air intake section 5 is connected to the jet nozzles 2, 3.4.

Then, by using the ejector effect by the ejector pressure generated by operating the circulation pump P, air is mixed into the bath water through the intake pipe 5a, and the bath water with bubbles is sent to the spout nozzle 2. , 3.4. Next, the structure of the control section C for controlling the pump drive device M and the foot, dorsal, and ventral jet nozzles 2, 3.4 will be explained.

As shown in FIG. 3, the control unit C includes a microprocessor M
PU and input/output interface 13. 14 and ROM
and IIA? It takes over from the memory 15 consisting of 1 and the timer 16. In the above structure, the input interface 13
The rotation speed detection sensor 6 detects the rotation speed of the circulation pump P, the valve body reference position detection sensor 17 detects the opening/closing amount of the valve body for regulating the amount of ejection, and the valve reference position detecting sensor 17 detects the opening/closing amount of the bubble volume regulating valve. Infrared drive signals from the position detection sensor l8, the pressure detection sensor 12 that detects the water pressure of the bath water forced pipe l1, the bath water temperature detection sensor T that detects the temperature of the bath water in the bathtub body l, and the remote controller 20 are transmitted. A light receiving section 21 which also serves as an operation section for receiving data is connected.

Note that in this embodiment, the light receiving section 21 is connected to the air intake section 5.
It is placed on top. On the other hand, the output interface l4 has a pump drive device M
M, old motor for driving the forward and backward movement of the valve body for the nozzle, bubble ffi! I
The motor gate 2 for driving the valve body for the il-section is connected to the electric three-way valve Q.

In addition, the memory 15 stores the above-mentioned pump drive device M, the motor for driving the valve body for the nozzle back and forth, and the valve for adjusting the amount of air bubbles based on the output signals from each of the above-mentioned sensors and the drive signal from the remote controller 20. A drive sequence program for driving the body drive motor M2 and the drive section of the electric three-way valve Q is stored.

The above-mentioned bubble-generating bathtub A, except for the structure of the pump driving device M described below, is based on Japanese Patent Application No. 63-331772.
The structure can be similar to the structure disclosed in this issue.

The present invention uses a DC motor capable of changing the rotational speed of the circulation pump P by field control as the pump drive device M for driving the circulation pump P in the bubble generating bathtub 8 constructed as described above. It has particular characteristics.

By controlling the field using a rectifier, a phase delay device, an oscillator, and a variable resistor, which will be described later, it is possible to easily change the rotation speed of the circulation pump P and arbitrarily change the amount and pressure of the bath water. Yes, bathers can use the special @@63-3
You can enjoy various types of blows disclosed in No. 31772, such as mild blows, acupressure blows, pulse blows, and mansage blows.

Furthermore, since a direct current motor controlled by a field is used, the blow mode can be changed without inverter control, and the possibility of a life-threatening electric shock accident due to a high wave command can be reduced as much as possible.

Furthermore, since an expensive inverter is not required, the bubble generating bathtub A can be manufactured at low cost. Next, to briefly explain field control, in this embodiment, a field control circuit using phase delay is shown in FIGS. 4 and 5, and a field control circuit 111 using chopper control is shown in FIGS. 6 and 7. It shows.

That is, in FIG. 4, 50 indicates AC 1ta, and lines 5 to which rectifiers 53 and excitation devices 54 are attached, respectively.
1.52 to the DC motor driving the pump drive device M and to the field coil 55.

Further, the excitation device 54 is further connected to a phase lag adjustment circuit 57 via a line 56, and a control section C is connected to the same phase lag adjustment circuit 57.

With this structure, as shown in FIG. 5, by adjusting the phase delay amount d during rectification, the DC voltage after rectification can be freely adjusted, and the pump drive device M
The rotational speed of the DC motor can be freely changed.

Further, in FIG. 6, an oscillator 5 is connected to the excitation device 54 instead of the phase delay adjustment circuit 57.

With this structure, as shown in FIG. 7, during rectification, the rotation speed of the DC motor that is the pump drive device M can be freely changed by controlling the oscillation frequency or time by adjusting the number of oscillations.

Further, although not shown, a variable resistor is connected to the excitation device 54, and the variable resistor is controlled by a control signal from the control unit C to make the voltage variable, thereby controlling the DC motor that is the pump driving device M. It is also possible to freely change the rotation speed.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the bubble-generating bathtub of the present invention, Fig. 2 is a plan view of the same bathtub, Fig. 3 is a block diagram of the piping system and control system of the bubble-generating bathtub, and Fig. 4 is a phase delay that allows field control. A conceptual explanatory diagram of a field control circuit equipped with an adjustment circuit, FIG. 5 is an explanatory diagram of the rectification effect by the field control circuit, FIG. FIG. 7 is an explanatory diagram of the rectification effect by the same field control circuit. (A): Bubble generating bathtub (D): Bath water circulation flow path (P): Circulation pump (M): Pump drive device

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 the circulation pump, and the bath water forced flow flow path is The air intake parts are connected in communication, and the air taken in by the air intake parts is mixed into the bath water in the bath water forced flow path, so that the bath water mixed with air bubbles can be spouted from each jet nozzle into the bathtub body. 1. A bubble-generating bathtub characterized in that the pump drive device connected to the circulation pump is formed by a DC motor whose speed can be controlled by field control.