JPH02309946A - Bubble generating bathtub - Google Patents

Abstract

PURPOSE:To vary a blow type without controlling an inverter and to reduce the electric shock accident affecting a person's life caused by a high frequency component by varying a slip of an induction motor for driving a circulating pump and varying the number of revolution of the circulating pump. CONSTITUTION:A pump driving device M of a circulating pump P is provided with a revolution speed detecting sensor 6 for detecting the speed of revolution of the circulating pump P, its detection circuit is sent to a control part C, and the speed of revolution of the circulating pump P is controlled. Therefore, an induction motor which can vary the speed of revolution of the circulating pump by varying a slip used as the pump driving device M. Subsequently, by varying a slip by applying a secondary resistance method and a static Scherbius method, etc., the speed of revolution of the circulating pump P is varied. In such a way, the blow type can be varied without controlling an inverter, and an electric shock accident affecting a person's life caused by a high frequency can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a bubble-generating bathtub that is highly safe during bathing (and allows inexpensive blow control).

(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, the air bubbles can be used to massage the body, increasing the pleasure 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 configuration, by operating the circulation pump, bath water can be spewed out from the spout on the side wall of the bathtub body, and at the time of spouting, air is sucked under negative pressure from the air suction part and poured into the bath water. By mixing air and ejecting air-mixed bath water from the spout, bubbles are generated in the bathtub and applied to the body of the bather, thereby increasing the pine surge 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 an electric motor used as a pump drive device for driving a circulation 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 insulation between the bathtub and the circulation pump is caused by the high frequency components generated during the switching operation of the switching element. If this is not done properly, the leakage current will flow to the bathtub side, increasing the danger 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.

(d) 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, and An air intake part is connected to the hot water forced flow passage, and the air taken in by the air intake part is mixed into the bath water in the bath water forced flow passage, 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 an induction motor whose speed can be controlled by changing the slippage. be.

(E) Functions and Effects In the present invention, the pump drive device for driving the circulation pump is formed by an induction motor that can change the rotational speed of the circulation pump by changing the slip.

Therefore, as is clear from the equation shown below, by changing the slip, the rotation speed of the circulation pump can be easily changed, and the amount and pressure of hot water jetted out can be arbitrarily changed, and bathers can , you can enjoy various blow types.

120・f N = -(1-5) (Here, N: rotation speed of circulation pump P, f knee-order frequency, ρ: number of poles, S: slip) In addition, slip is calculated by changing the secondary resistance. When changing by the second resistance method, it is possible to change the blow form without performing inverter control <B, and it is possible to reduce as much as possible the possibility of life-threatening electric shock accidents caused by high frequency components.

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.

FIGS. 1 and 2 show the overall structure of the bubble-generating bathtub A. The bubble-generating bathtub A has foot-side spouts 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. Nozzle 2. A dorsal side jet nozzle 3 and a ventral side jet nozzle 4 are provided.

The bathtub body 1 has a flange-shaped 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 an air bubble amount adjustment valve Va and a bubble amount adjustment valve element driving motor M2 that drives the air bubble amount adjustment 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, and inside the case 9 is a circulation pump P that circulates the bath water in the bathtub body 1. a filter R that filters the bath water circulated by the circulation pump P;
A pump driving device M that drives the pump P, and a moke M for driving the pump driving device M and a nozzle valve body forward and backward, which will be described later.
1, a motor 2 for driving a valve body for regulating the amount of air bubbles, and a control section C for controlling the driving of an electric three-way valve Q.

Note that Ql is a single-use vibrator for discarding a portion of the bath water during backwashing.

A bath water circulation flow path is interposed between the bathtub body 1 and the circulation pump P described above.

That is, the bath water circulation flow path 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 generating bathtub A to the circulation pump P. It consists of a bathtub bullet sending vibe (bathtub bullet sending channel) 11 for sending hot water.

The bath water suction pipe 10 has one end opened at the bottom of the bathtub body 1 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 bath water bullet feeding vibe 11 has one end connected to the circulation pump P.
The other end is connected to the spout nozzle 2°3.4 on the foot side, ventral side, and dorsal side, respectively.

Further, as shown in FIG. 3, the pump driving device M of the circulation pump P is equipped with a rotation speed detection sensor 6 that detects the rotation speed of the circulation pump P, and the detection 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 is installed in the middle of the bath water pumping pipe 11 to detect the pressure of the bath water being pumped into the pipe 11. Then, a detection signal from the pressure detection sensor 12 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. The number of rotations and the amount of ejection S from the foot, dorsal, and ventral ejection nozzles 2, 3.4 are controlled by changing the position of the waste regulating valve body.

Further, the pressure detection sensor 12 can also be used as a water level sensor for detecting the amount of bath water in the bathtub body 1.

These jet nozzles 2, 3.4 each use a jet volume automatic adjustment jet nozzle having the same structure and configured to be able to automatically change the jet volume and jet pressure of bath water.

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 operating the circulation pump P, air is mixed into the bath water through the suction pipe 5a using the ejector effect by the ejection pressure generated, and the bath water mixed with bubbles is ejected from the jet nozzles 2 and 3. It can be ejected from .4.

Next, the configuration 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 described.

The control unit C includes a microprocessor M as shown in FIG.
PII and input/output interface 13.14 and ROM
It consists of a memory 15 consisting of a RAM, a timer 16, and a timer 16.

In the above configuration, the input interface 13
These include a rotation speed detection sensor 6 that detects the rotation speed of the circulation pump P, a valve body reference position detection sensor 17 that detects the opening/closing amount of the valve body for the jet 1ff1 node, and a valve reference position detecting the opening/closing amount of the air bubble amount adjustment valve. Receives infrared drive signals from the detection sensor 18, the pressure detection sensor 12 that detects the water pressure of the bath water delivery pipe 11, the bath water temperature detection sensor T that detects the temperature of the bath water in the bathtub body 1, and the remote controller 20. A light-receiving section 21 that also serves as an operation section is connected.

Note that in this embodiment, the light receiving section 21 is connected to the air intake section 5.
is placed above.

On the other hand, the output interface 14 includes a pump drive device M, a moke for driving the nozzle valve forward and backward, and a bubble 1! ] An electric three-way valve Q is connected between the motor for driving the regulating valve element.

In addition, in the January 5th memo, the pump driving device M, the motor M1 for driving the valve body for the nozzle, the air bubble amount adjustment, and the motor M1 for driving the nozzle valve body forward and backward, based on the output signals of the above-mentioned sensors and the drive signals of the remote controller 2o. A driving sequence program for driving the valve body driving motor M2 and the driving section of the electric three-way valve Q is stored.

Note that the bubble generating bathtub A described above, except for the pump drive device M(7) J4 configuration described below, is manufactured in Japanese Patent Application No. 63-331.
A configuration similar to that disclosed in No. 772 may be used.

In the bubble generating bathtub A configured as described above, the present invention uses an induction motor that can change the rotation speed of the circulation pump by changing the slip as the pump drive device M that drives the circulation pump P. It is characterized by its use.

Then, by applying the quadratic resistance method, static Servius method, etc., which will be described later, and changing the slip S shown in the following equation, the circulation pump can be easily changed and the amount and pressure of the bath water spouted can be adjusted as desired. The bather can enjoy a variety of blowout styles.

120・f N = -(1-3) (Here, N: rotation speed of circulation pump P, f knee-order frequency, p: number of poles, S: slip) In addition, slip S is the secondary resistance When changing by the secondary resistance method, it is possible to change the blow form without inverter control, and it is possible to reduce as much as possible the possibility of life-threatening electric shocks caused by high frequency components.

Furthermore, since an expensive inverter is not required, the bubble generating bathtub can be manufactured at low cost.

Next, to briefly explain the secondary resistance method and the static Servius method for changing the slip S, the secondary resistance method uses the circulating pump by changing the external secondary resistance 50 in the electric circuit conceptually shown in FIG. The purpose is to change the rotation speed of P.

On the other hand, the static Servius method is a method of converting external secondary loss (power) into a power source using an electric circuit conceptually shown in FIG.

In addition, in FIG. 5, 51 is a rectifier, 52 is a passive inverter for rotation operation, 53 is a transformer, 54 is a speed detector,
55 is a speed controller.

Further, depending on the purpose of generating bubbles, the primary voltage control method or the Kramer method may be adopted depending on the size of the bubbles.

[Brief explanation of the drawing]

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 two-dimensional diagram for changing the slippage. Fig. 5 is a conceptual electrical circuit diagram of the static Servius method for changing the slip. (A): Bubble generating bathtub (D): Bath water circulation flow path CP): W4 ring 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 an induction motor whose speed can be controlled by changing the slippage.