JPH02309949A - Bubble generating bathtub - Google Patents

Abstract

PURPOSE:To vary a blow type without controlling an inverter and to reduce the electric shock accident affecting to a person's life caused by a high frequency component by providing a fluid joint type variable speed gear between a circulating pump and a pump driving device, and varying the quantity of a liquid supplied into a fluid joint. CONSTITUTION:A fluid joint type variable speed gear G is provided between a circulating pump P, and a pump driving device M for driving the same circulating pump P. In the fluid joint type variable speed gear G, an input shaft 50 and an output shaft 51 are placed on one straight life, and a pump impeller 52 and a turbine impeller 53 are coupled to the input shaft 50 and the output shaft 51, respectively and opposed to each other, and the torque transferred from the input shaft 50 to the output shaft 51 is varied in accordance with the quantity of a liquid. Accordingly, when the liquid quantity is varied in accordance with a characteristic of the torque to a speed of a load, the characteristic of the transfer torque to a rotation speed of the output shaft 51 is varied, and a rotation speed of an impeller fitting shaft 55 of the circulating pump P connected to the output shaft 51 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 for an inexpensive blowing system 61.

(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.

In addition, 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 is installed near the spout. An air suction unit is installed that can take advantage of this effect and mix air 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-mentioned yA problem.

(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 a fluid coupling type transmission device is interposed between a circulation pump and a pump drive device.

(E) Functions and Effects In the present invention, since the fluid coupling type transmission device is interposed between the circulation pump and the pump drive device, by changing the amount of the 7 skins supplied into the fluid coupling, By changing the rotation speed of the circulation pump steplessly, the amount and pressure of hot water jetted out can be arbitrarily changed, allowing bathers to enjoy various blowing styles.

It is possible to change the blow mode without performing inverter control, and the possibility of life-threatening electric shock accidents caused by high frequency components 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 foot-side spout 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 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.

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

In other words, the bath water Wi circulation path includes a bath water suction pipe (bath water suction channel) 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 passage) 10 for sending bath water from the bubble-generating bathtub A to the circulation pump P. It consists of a bath water bullet feed pipe (bath water forced flow channel 1) 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 WJ ring pump P
The other end is connected to the water supply port of the pump P, so that bath water is sucked into the circulation pump P.

On the other hand, the bath water bullet feed pipe 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 for detecting the pressure of the bath water being force-fed into the bath water vibrator 11 is attached to a midway portion of the bath water bullet-feeding vibrator 11, as shown in FIG. 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. Control is performed by changing the rotational speed and the position of the valve body for adjusting the amount of ejection from each of the leg side, dorsal side, and ventral side ejection nozzles 2, 3.4.

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 of an air intake section 5 is connected to the jet nozzles 2, 3.4.

Then, 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 mixed with air bubbles is ejected from the jet nozzles 2, 3.4. You can squirt more.

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.

11'tIJ part C has a microprocessor MPU and an input/output interface 13.14, as shown in FIG.
It consists of memo January 5 consisting of R01'l and IIAM, and timer 16.

In the above configuration, 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 I7 detects the opening/closing type of the valve body for regulating the amount of ejection, and the valve reference position detecting sensor I7 detects the opening/closing amount of the bubble volume regulating valve. The position 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 infrared drive signal from the remote controller 20 are detected. 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.
is placed above.

On the other hand, the output interface 14 is connected to a pump driving device M, a motor M1 for driving the nozzle valve body forward and backward, a motor M2 for driving the valve body for adjusting the amount of air bubbles, and an electric three-way valve Q.

The memory 15 also stores the pump driving unit ZM, the motor for driving the nozzle valve body forward and backward based on the output signals from each of the sensors described above, and the drive signal from the remote controller 20. 11. Motor M2 for driving the valve body for adjusting the amount of air bubbles
And a drive sequence program for driving the drive unit of the electric three-way valve Q is stored.

The bubble generating bathtub A described above may have the same structure as that described in Japanese Patent Application No. 63-331772, except for the pump drive device M and the fluid coupling type variable speed bag JG described below.

In the bubble generating bathtub A configured as described above, the present invention includes a fluid coupling type transmission device G interposed between a circulation pump P and a pump drive device M for driving the circulation pump P. Features a composition.

In this way, in this embodiment, since the fluid coupling type transmission device G is interposed between the circulation pump P and the pump drive device M, by changing the flow of liquid supplied into the fluid coupling, By changing the rotation speed of the circulation pump P, the amount and pressure of the bath water can be changed arbitrarily, and the bather can use various blow methods (for example, the mild blow described in Japanese Patent Application No. 63-331772, shiatsu). blow, pine surge blow, etc.)
can be enjoyed.

Furthermore, it is possible to change the blow mode without performing inverter control, and the possibility of life-threatening electric shock accidents caused by high frequency components can be reduced as much as possible.

Furthermore, since an expensive inverter can be omitted, the bubble-generating bathtub A can be manufactured at low cost.

The fluid coupling type transmission G applicable to this embodiment is as follows:
Although various forms can be considered, a concrete example thereof is shown in FIG.

That is, as conceptually shown in FIG. 4, the fluid coupling type transmission 1ZG has an input shaft 50 and an output shaft 51 placed on a straight line, a pump impeller 52 on the input shaft 50, and a pump impeller 52 on the output shaft 51. It is constructed by combining turbine impellers 53 and making them face each other.

Further, the input shaft 50 is connected to a morph shaft 55 of an induction motor M forming the pump drive bag WM, and the output shaft 51 is connected to an impeller mounting shaft 54 of the circulation pump P.

Furthermore, 56 is a variable capacity pressurizing pump that supplies liquid from a liquid tank 57 into the fluid coupling, and 5th is a pump driving device.

In this configuration, the inside of the fluid coupling type transmission G is filled with liquid such as oil, and the human power shaft 5 is driven by the pump drive device M.
0, the liquid is turned by the pump impeller 52 and flows out. The liquid with this rotational energy passes through the turbine impeller 53 and rotates the output shaft 51 connected to the impeller mounting shaft 55 of the circulation pump P. In this case, the torque transmitted from the input shaft 5o to the output shaft 51 changes depending on the amount of liquid. The rotational speed becomes stable when the transmitted torque and the load torque of the circulation pump P are balanced.

Therefore, when the liquid amount is changed according to the torque characteristics with respect to the speed of the load, the characteristics of the transmitted torque with respect to the rotational speed of the output shaft 51 change, and the circulation pump P connected to the output shaft 51 changes.
The rotational speed of the impeller mounting shaft 55 changes.

In the present invention, the fluid coupling is not limited to the embodiment described with reference to FIG. 4, but includes a torque converter and a hydraulic clutch.

In addition, in the present invention, various forms of the pump driving bag RM can be used, for example, an electric motor,
Air motors, hydraulic motors, internal combustion engines, etc. can be used.

[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 bubble-generating bathtub, and FIG.
The figure is a conceptual configuration explanatory diagram of a fluid coupling type transmission device. (A): Bubble generating bathtub (D): Bath water circulation flow path (G): Fluid coupling type transmission device (P): Circulation pump

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. A bubble-generating bathtub characterized in that a fluid coupling type transmission device is interposed between the circulation pump and the pump drive device.