JPH02309966A - Bubble generating bathing equipped with air lock avoiding function - Google Patents

Abstract

PURPOSE:To avoid air lock and to enable smooth blow operation with prescribed water pressure by stopping a pump when the water pressure is lowered in the circulation duct of hot water for bathing by the air lock of the circulation pump and discharging air in the circulation pump. CONSTITUTION:Lowering of the water pressure in a bathing hot water forcible feeding pipe 16 is detected by a pressure detection sensor 18. Then, the state of the air lock for a circulation pump P to suck the air is judged. A detected value is sent from the pressure detection sensor 18 to a control part C. Based on the detected value, the drive of the circulation pump P is controlled from the control part C and avoiding treatment is executed. For the avoiding treatment, a pump 30 for pumping water is driven and the air in the circulation pump P is pushed out. Otherwise, the circulation pump P is operated backward or a motor 11 for pump drive is once stopped and the motor 11 started slowly. Then, the circulation pump P is slowly operated. Thus, the smooth blow operation is executed with the prescribed water pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a bubble-generating bathtub having an airlock avoidance function of a circulation pump.

(b) Conventional technology Conventionally, as a basic form of a bubble-generating bathtub, Japanese Patent Laid-Open No. 59-1
As described in Japanese Patent No. 35058, a bath water suction pipe and a bath water supply pipe are connected between the bathtub body and the circulation pump, and an air intake part is provided in the middle of the pipe.

With this structure, the circulation pump sucks bath water in the bathtub body through the bath water suction pipe, and at the same time, the circulation pump discharges bath water into the bathtub body via the bath water supply vibrator.

At this time, the air intake part mixes the bath water into the bath water by using the negative pressure generated by the jet of bath water from the air intake part. I'm trying to make it squirt out.

(c) Problems to be Solved by the Invention However, the above-mentioned bubble-generating bathtub had the following drawbacks.

In other words, an aero tank occurs when the level on the pump side and the level on the bathtub body side differ, and if the pump chamber is higher than the level of the suction port of the bathtub body, the bath water in the bathtub body will be drained. After that, when water was supplied, the air remaining in the pump chamber was not removed, causing an airlock condition.

Therefore, when the hot water jet operation was started, the predetermined water pressure of the pump was lowered by the residual air, making it impossible to perform the desired blow operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bubble-generating bathtub having an airlock avoidance function that can solve the above-mentioned problems.

(d) Means for Solving the Problems In the present invention, 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, A jet nozzle is formed at the opening of the bath water forced flow channel provided in the bath bath body, and an air intake part is connected in communication with the bath water circulation channel, and the bubble-mixed bath water is sent from the same nozzle to the bath bath body. In a bathtub structure configured to generate bubbles, the start and stop of the circulation pump is controlled by the control unit, and if the water pressure in the bath water circulation flow path decreases due to the air flow of the pump, the pump is stopped. The present invention provides a bubble generating bathtub having an air lock avoidance function, which is characterized by venting air within a circulation pump.

Further, the present invention is characterized in that a priming pump is attached to the circulation pump, and the start and stop of the pump is controlled by the control section.

Further, the present invention is characterized in that the circulation pump controlled by the control section is rotated in reverse.

The present invention is also characterized in that the drive of the circulation pump controlled by the control section is started slowly.

(e) Functions and Effects In the present invention, when the installation position of the circulation pump is higher than the drain port of the bathtub body, when water is supplied to the bathtub body after draining the bath water in the bathtub body, the same Air remains in the pump, and when the pump is operated, the remaining air creates an aerotic condition, reducing the water pressure in the bath water.

Furthermore, due to the decrease in water pressure, a priming pump provided in the circulation pump controlled by the control unit is driven, and the priming pump supplies water into the circulation pump.
The air inside the circulation pump is vented.

Further, when an air lock condition occurs in the circulation pump, the air inside the pump can be vented by stopping the pump and rotating the pump in the opposite direction.

Furthermore, when an air lock condition occurs in the circulation pump, the air in the pump can be vented by stopping the pump and starting it slowly.

Therefore, according to the present invention, even if an aero-vine condition occurs in the circulation pump, by taking the above-mentioned avoidance measures, it is possible to perform a smooth blow operation using a predetermined water pressure, and to enjoy a comfortable bathing experience. .

(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, dorsal, and ventral jet nozzles 2, 2, 3, 3, and 4.4 are provided.

The bathtub main body l has a brim-like edge 1a of a constant width on the periphery, an air intake part 5 on the edge 1a, and a rear wall (rear wall) approximately at the center of the left and right side walls. ) A ventral jet nozzle 4.4 is attached to the inclined surface 1b, lb on the side 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 and 3, so that the bath water can be reliably applied to the ventral side, opposite side, and other parts of the human body. It is configured so that it can be done.

A pump protection case 9 is provided outside the bubble-generating bathtub A, and inside the case 9 are a circulation pump P that circulates the bath water, a filter 10 that filters the bath water, and a pump-driving device. A motor 11 and a motor 12 for opening and closing the valve body for the nozzle.
and a control section C that controls the drive of the electric three-way valve 13.

In addition, 10a indicates a discharge pipe from the filter 10 - Also, between the circulation pump P and the bubble generating bathtub A, there is a
A bath water circulation flow path is provided, and the bath water circulation flow path includes a bath water suction pipe 15 for sending bath water from the bubble generating bathtub A to the circulation pump P, and a bath water suction pipe 15 for sending the bath water from the bubble generating bathtub A to the circulation pump P. It consists of a bath water bullet delivery pipe 16 for sending bath water to the bathtub A.

The bath water suction pipe 15 has one end communicatively connected to the suction port 17 opened at the bottom of the bathtub body 1, and
The other end is communicated with the suction port 17 of the circulation pump P, so that bath water is sucked into the pump P.

On the other hand, the bath water bullet feed pipe 16 has one end connected to the water outlet of the circulation pump P, and the other end connected to each of the jet nozzles 2.degree. 3.4.

In addition, the above-described suction port 17 is connected to the foot side/dorsal side jet nozzle 2.
, 3.

Also, a pump drive motor 1 that drives the circulation pump P
1 and the control section C, as shown in FIG. 2, an inverter E is interposed, and the output frequency of the inverter E is changed to control the rotation speed of the circulation pump P.
The rotation speed of the circulation pump P can be changed smoothly and reliably.

In addition, as shown in FIG. 2, a pressure detection sensor 18 is installed in the middle of the bath water pumping vibrator 16 to detect the water pressure of the bath water being pumped into the pipe 16. The results are sent to the control unit C, which controls the jetting pressure of the bath water spouted from each jetting nozzle 2, 3.4, the rotation speed of the pump driving motor 11, and the number of revolutions of each jetting nozzle 2, 3.4.
It is configured to control this by changing the amount of opening/closing.

Further, the pressure detection sensor 18 is also used as a water level detection sensor for detecting the amount of hot water filled in the bathtub body 1.

By using such a water level detection sensor, when the bath water does not reach a certain water level, the blow operation, antifreeze operation, filter cleaning operation, and automatic filtration membrane cleaning operation, which will be described later, by the control unit C will not be started. It is configured as follows.

In addition, as shown in FIG. 2, a bath water temperature detection sensor 19 is installed in the middle of the bath water bullet conveying pipe 16 to detect the temperature of the bath water being fed into the pipe 116. The detection results are sent to the control unit C, which controls the pump drive motor 11 and each jet nozzle 2.3.4.

By using the bath water temperature detection sensor 19, the control unit C can start and stop the blow operation, antifreeze operation, filter cleaning operation, and automatic filtration membrane cleaning operation according to the temperature conditions of the bath water. I try to do it.

In this way, the blow operation, antifreeze operation, filter cleaning operation, and automatic filtration membrane cleaning operation by the control unit C are designed so that they cannot be started if the water level of the bath water is below a certain level and the water temperature is below a certain level. I have to.

Furthermore, the air intake section 5 described above and each jet nozzle 2.3,
4, as shown in FIG. 2, a plurality of intake pipes 20 are interposed between the
The air intake part 5 is connected 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
Passed through each intake pipe 20 and through each jet nozzle 2.3.4
The bath water mixed with air bubbles is spouted into the bathtub body 1 from each nozzle 2, 3 and 4.

Further, as shown in FIGS. 1 and 2, an operation panel section 6 connected to a control section C is disposed on the edge 1a of the bathtub body 1, and various switches provided on the panel section 6 are provided. The device is configured to operate the bubble-generating bathtub.

The operation panel section 6 will be explained in detail below.

21 is an infrared receiving section provided in the operation panel section 6;
The infrared rays emitted from the remote controller 22 are being received.

Further, in this embodiment, the operation panel section 6 is attached to the upper part of the air intake section 5 provided at the edge 1a of the bathtub body 1, and is integrally configured.

Note that 23 is a reception indicator lamp provided on the operation panel section 6.

Next, the control section C will be explained in detail.

As shown in FIG. 2, the control section C is composed of a microprocessor MPU, a human interface 24, an output interface 25, a memory 26 consisting of ROM and RAM, and a timer 27.

In the above configuration, the input interface 24
The rotation speed detection sensor 28 detects the rotation speed of the circulation pump P, the valve body reference position detection sensor 29 detects the opening/closing amount of the valve body for regulating the amount of ejection, and the water pressure in the bath water bullet delivery pipe 16 is detected. A pressure detection sensor 18, a bath water temperature detection sensor 19 that detects the temperature of bath water in the bathtub body 1, and an infrared receiving sensor 21 that receives an infrared drive signal from a remote controller 22 are connected.

On the other hand, the output interface 25 is connected to the pump drive motor 11, the nozzle valve opening/closing motor 12, the electric three-way valve 13, and the drive section of the filter 10.

The memory 26 also stores a drive order program for driving the drive units such as the motors 11 and 12 and the electric three-way valve 13 based on the output signals from the sensors described above and the drive signals from the remote controller 22. I remember.

In this embodiment, the rotation speed of the circulation pump P is adjusted by changing the frequency of the current supplied to the pump drive motor 11 by the inverter E.

The bubble generating bathtub A mentioned above is based on Japanese Patent Application No. 63-3317.
It has the same configuration as that described in No. 72.

In the bubble generating bathtub A configured as described above, the present invention is configured to determine an airlock state occurring in the circulation pump P during blowing operation and take measures to avoid the airlock. The structure will be explained in detail.

That is, the pressure detection sensor 1 is installed in the bath water bullet conveying pipe 16.
8 is provided, and the water pressure inside the pipe 16 is detected by the sensor 18.

In this embodiment, when the water pressure in the bath water pump pipe 16 decreases, the pressure detection sensor 18 detects the decrease in water pressure and determines the aerodynamic state in which the circulation pump P sucks air. ing.

Then, the detected value is sent from the pressure detection sensor 18 to the control section C, and based on the detected value, the control section C controls the drive of the circulation pump P to take measures to avoid air leakage.

In this embodiment, a priming pump 30 is attached to the circulation pump P, and the starting and stopping of the pump 30 is controlled by a control section C.

Then, the bath water bullet conveying pipe 16 from the pressure detection sensor 18
When the water pressure inside the pump decreases, the priming pump 30 is driven, the pump 30 forcibly supplies water to the circulation pump P, and the supplied water pushes out the air inside the circulation pump P, thereby removing air. It is composed of

Further, a water source 31 is connected to the priming pump 30, and when the pump 30 is started, bath water is sucked from the water source 31 and the bath water is supplied to the circulation pump P.

Note that the water source 31 may be the bathtub body 1, or may be connected to a separately provided water heater or the like.

In another embodiment of the present invention, the control unit C causes the pump drive motor 11 to rotate in the opposite direction, thereby causing the circulation pump P to operate in the opposite direction.

Then, the circulation pump P is operated in the opposite direction, and the same pump P
The air inside the pump P is once discharged to the outside, and the pump drive motor 11 is rotated in the forward direction to allow the pump P to perform normal operation.

Further, as another embodiment of the present invention, the pump drive motor 11 is temporarily stopped by the control unit C, and the pump drive motor 11 is stopped.
1 is configured to start slowly.

By starting the pump drive motor 11 slowly, the circulation pump P operates slowly, and this operation prevents the problem that air is taken in and the circulation pump P idles.

In this embodiment, an inverter E is provided between the pump drive motor 11 and the output interface 25, and a program stored in the memory 26 of the control unit C converts the input frequency supplied from the AC commercial power source. I try to do this.

That is, the inverter E converts electric power of 200 V from an AC 100 V power source into three-phase variable speed motor drive power and outputs it.

Then, the rotation speed of the pump drive motor 11 is controlled in proportion to the output frequency converted by the inverter E, and the rotation speed of the circulation pump P is controlled by such control.

By controlling the circulation pump P with the inverter E in this way, the circulation pump P can be started slowly.

In addition, when performing such air removal, the circulation pump P is installed at a position slightly lower than the installation position of the bathtub body 1, and the bath water bullet feeding vibrator 16 is tilted upward toward the bathtub body 1. It is desirable to have a

Therefore, according to the present invention, even if an aerodynamic condition occurs in the circulation pump P, by taking the above-mentioned avoidance measures, a smooth blowing operation can be performed using a predetermined water pressure, and a comfortable bathing can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a bubble generating bathtub structure according to the present invention;
FIG. 2 is a conceptual diagram of a bubble-generating bathtub. In the figure, A: Bubble generation bathtub P: Circulation pump C: Control unit 1: Bathtub body 28 Foot side spout nozzle 3: Back side spout nozzle 4; Ventral side spout nozzle 15: Bath water suction pipe 16: Bath water bullet delivery pipe

Claims (1)

[Scope of 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 is provided in the bath water body. A jet nozzle is formed at the opening of the bath water forced flow channel, and an air intake part is connected in communication with the bath water circulation channel,
In a bubble-generating bathtub configured to be able to spray bubble-mixed bathwater into the bathtub body from the same nozzle, the start and stop of the circulation pump is controlled by the control unit, and the airlock of the pump controls the water pressure in the bathtub circulation flow path. 1. A bubble generating bathtub having an air lock avoidance function, which bleeds air in a circulation pump by necessary means when the temperature decreases. 2. The bubble generating bathtub having an airlock avoidance function as set forth in claim 1, wherein a priming pump is attached to the circulation pump, and the start and stop of the pump is controlled by a control section. 3. The bubble generating bathtub having an air lock avoidance function as set forth in claim 1, wherein the circulation pump controlled by the control unit is rotated in reverse. 4. The bubble-generating bathtub having an airlock avoidance function as set forth in claim 1, wherein the circulation pump controlled by the control unit is slow-started.