JPH037844A - Water level sensor adjusting structure of bubble generating bath tub - Google Patents

Abstract

PURPOSE:To enable an error such as an off-set of a pressure sensor in case of shipment out of a factory and a displacement of setting height of a circulation pump to be eliminated by a method wherein a water level sensing is enabled by a pressure detecting sensor arranged in the midway of a hot water forced feeding pipe and a reference water level in case of performing a normal standard installation is set in advance and stored in a control part. CONSTITUTION:A water level within a main body of bath tub is enabled to be detected by a pressure detecting sensor 12 arranged in the midway of a hot water forced feeding pipe 10 and in addition, a reference water level during a normal or standard installation work with the pressure detecting sensor 12 is set in advance and the water level is stored in a control part C. That is, a suction port 11 set in a main body of a bath tub and an injection nozzle 4 at a side of the bath tub are set as a segment reference, a case in which the water level is higher than an upper end of the opening of the injection nozzle 4 at the side of the bath tub is defined as a water level A, and a case in which the water level is set between an upper end of the opening of the injection nozzle 4 of the side part of the bath tub and the upper end of the suction port 11 is defined as a water level B, and another case in which the water level is lower than the upper end of the suction port 11 is defined as the water level C. If the water level is the water level A or B, an air blowing operation is started and at the water level C, the air blowing operation is not started.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a water level sensor adjustment structure for a bubble-generating bathtub.

(B) Conventional technology Conventionally, as described in Japanese Patent Application Laid-Open No. 59-135058, a bubble-generating bathtub has a bath water suction system between the bathtub body and a circulation pump installed outside the bathtub body. A bath water circulation flow path consisting of a vibrator and a bath water delivery pipe is provided, an air intake part is provided in the middle of the bath water forced delivery pipe, and the circulation pump is operated to circulate the bath water into the bathtub via the bath circulation flow path. Some bath water is made to eject air mixed with bubbles by ejecting it from a nozzle into the main body and simultaneously mixing it with air sucked in from an air intake.

By providing a water level detection sensor in the middle of the forced bath water pipe, it can be used to detect, for example, the amount of hot water filled.

(C) Problems to be Solved by the Invention However, this water level detection sensor is often used as a pressure detection sensor. Therefore, since the pressure detection sensor has low precision, the error of the sensor itself may cause the sensor to malfunction when shipped from the factory. The combined standard water level often goes out of order during construction.

This deviation occurs not only due to errors in the pressure detection sensor itself but also due to errors in the control circuit, errors in level height due to special piping during construction, etc.

If such an error in the reference water level occurs, the following problems occur.

For example, in a bubble-generating bathtub, the water level is divided into certain water levels (positions of the ventral side jet nozzle, foot side jet nozzle, dorsal side jet nozzle, water suction hole, etc.) from the standard water level, and the nozzle valve is activated by detecting the water level. control and circulation pump to obtain the optimal jet pressure and prevent unnecessary pressure.
In addition, if the circulation pump is designed to be protected, if an error occurs in the reference water level, the division position for each certain water level will also shift, making it impossible to perform accurate control. When the water level drops below the level of the legs, the jet nozzle is normally throttled to prevent the high-pressure jet from hitting the abdomen and chest and causing danger.
Due to the deviation in the water level, the jet nozzle cannot be controlled sufficiently, and an unexpected jet pressure may be generated, which may pose a danger to the human body.

(d) Means for Solving the Problems In this invention, a bath water circulation channel consisting of a bath water suction vibrator and a bath water forced delivery pipe is provided between a bathtub body and a circulation pump installed outside the bathtub body. A plurality of ends of the forced bath water supply pipe are opened into the bathtub body to form a spout nozzle, and an air intake part is connected to the forced bath water pipe so that air bubbles are mixed from the spout nozzle. In a bubble-generating bathtub configured to be able to spray water into the bathtub body, a pressure detection sensor is installed in the middle of the bath water bullet delivery pipe, and the sensor is configured to also be able to detect the water level. By setting the standard water level at the time of construction in advance and storing that water level in the control unit, it is possible to eliminate offset errors in the pressure sensor and control circuit at the time of shipment from the factory, as well as between the bathtub body and the circulation pump during construction. Installation height deviation error,
It is an object of the present invention to provide a water level sensor adjustment structure for a bubble-generating bathtub that is configured to eliminate all errors such as deviations in the set height of a circulation pump other than the standard installation position caused by special piping.

(e) Function/Effect In this invention, before shipping from the factory, the reference water level at the time of standard construction is controlled and memorized in advance using a pressure detection sensor. The water level is stored in the control unit.

Next, when the construction is completed on-site, it is possible to determine whether the positional relationship between the bathtub body and the pressure detection sensor is set correctly in the completed construction state, or whether there is an error in the sensor or an error in the control circuit. It is unclear whether or not there is
And if there is a drop error, the reference water level will be out of order, so
It becomes impossible to carry out various subsequent controls accurately as planned.

Therefore, for example, if the bathtub itself is filled with water and reset by pressing the adjustment switch, the reference water level will be stored in the control unit, and the various errors mentioned above, such as the offset error of the pressure sensor at the time of shipment from the factory, will occur. or,
This scale eliminates all errors such as offset errors in the control circuit, deviations in the installation height between the bathtub body and the circulation pump during construction, and deviations in the installation height other than the standard installation position of the circulation pump caused by special piping. It becomes.

In this way, since such deviations can be eliminated, accurate water level detection can be performed at the construction site in any condition or despite deficiencies in sensors and control circuits, and the water level can be detected in accordance with the water level detection. The jet pressure can be controlled and the opening/closing of the jet nozzle can be controlled according to the intended purpose, resulting in a comfortable bubble bath.

[Margin below]

(f) Example Embodiments of the present invention will be described in detail based on concave surfaces.

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, 4, and 4 are provided.

The bathtub body 1 has a flange-shaped edge 1a having a constant width on its periphery, and an air intake portion 5 at the foot-side corner of the edge 1a.
Also, raised portions 1b, lb are provided approximately at the center of the left and right side walls.
forming an inclined surface 1b, l on the side facing the rear wall (dorsal side)
In b., ventral side jet nozzles 4, 4 are attached facing the rear wall.

Moreover, the ventral jet nozzle 4 is installed at a higher position than the other foot and dorsal jet nozzles 2 and 3, so that the bath can be reliably applied to the ventral side, chest side, and other parts of the human body. It is configured as follows.

A pump protection case 6 is provided outside the bubble-generating bathtub A, and inside the case 6 there is a circulation pump P that circulates the bath, and a filter that filters the bath that is circulated by the pump P. 7, a pump drive motor M that drives the pump P, and a control section C that controls the drive of the motor M, a nozzle valve opening/closing motor A1, an electric three-way valve 8, etc., which will be described later. .

Further, a bath circulation flow path is interposed between the circulation pump P and the bubble generating bathtub A.

That is, the bath circulation flow path includes a bath water suction vibe 9 for sending the bath water from the bubble-generating bathtub A to the circulation pump P, and a bath water pump pipe 10 for sending the bath water from the circulation pump P to the bathtub A. It is made up of more.

The bath water suction vibrator 9 has one end communicated with an inlet 11 opened at the bottom of the bathtub body 1, and the other end communicates with the water inlet of the circulation pump P, so that the bath water is sucked into the circulation pump P. On the other hand, the forced bath water pipe 10 communicates at one end with the water outlet of the circulation pump P, and connects the spout nozzles 2, 3 .
4 and the other ends thereof are connected to each other for communication.

In addition, the above-described suction port 11 is connected to the foot side/dorsal side jet nozzle 2.
．． It is installed at a lower position than 3.

In addition, a pump drive motor M that drives the circulation pump P
An inverter E is interposed between the and the control unit C, and the output frequency of the inverter E is changed to control the rotation speed of the circulation pump P, thereby smoothly changing the rotation speed of the circulation pump P. We make sure that this can be done quickly and reliably.

In addition, in the middle of the bath water forced delivery pipe 10, the same pipe 10
Pressure detection sensor 1 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.
By changing the rotation speed of the pump driving motor M and the opening/closing amount of each jet nozzle 2.3.4, It is configured to perform this control.

In addition, the same vibe 10 is installed in the middle part of the bath water bullet delivery pipe 10.
A bath water temperature detection sensor T is installed to detect the temperature of the bath water pumped into the bath, and the detection result from the sensor is sent to the 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, when the hot water supply does not reach a certain water temperature, the control unit C
The blow operation, antifreeze operation, filter cleaning operation, and automatic filter cleaning operation described below are prevented from starting.

In this way, the blow operation, antifreeze operation, filter cleaning operation, and automatic filter cleaning operation, which will be described later, by the control unit C are prevented from starting when the water level and temperature of the bath are below a certain level. ing.

Moreover, the above-mentioned air intake part 5 and each jet nozzle 2.3.
As shown in FIG. , and the tip of each branch vibrator 14 is connected to each jet nozzle 2.
, 3.4.

The air taken in from the air intake part 5 is then taken in by using the negative pressure generated when each of the blowout nozzles 2, 3.4 blows out the bath.
It passes through each branch vibe 14 of the intake pipe 13 and is sucked into each jet nozzle 2, 3.4, making it possible to jet a bath mixed with air bubbles.

Further, as shown in FIG. 1, an operation panel section 15 is disposed near the bathtub body 1, that is, at the foot-side corner of the edge 1a. It is possible to perform driving operations, and 130b
is an infrared receiving section provided in the operation panel section 15, and is adapted to receive infrared rays emitted from the remote controller 17.

In the bubble generating bathtub as described above, the gist of the present invention is as follows:
The pressure detection sensor 12 installed in the middle of the bath water forced-feeding pipe 10 is configured to be able to detect the water level inside the bathtub body, and the reference water level during standard construction using the sensor 12 can be set in advance to control the control unit. The purpose is to have C memorize the water level.

The necessity of determining the reference water level during standard construction will be explained with respect to the bubble-generating bathtub of the embodiment of the present invention as follows.

That is, as shown in FIG. 3, the water level conditions for the bathtub body of the present invention are determined using the inlet 11 provided in the bathtub body 1 and the ventral jet nozzle 4 as classification standards, and the water level is determined when the water level of the ventral jet nozzle 4 is When the water level is higher than the upper end of the opening, the water level is A. When the water level is between the upper end of the opening of the ventral side jet nozzle 4 and the upper end of the inlet 11, the water level is B. When the water level is lower than the upper end of the inlet 11, it is the water level A. The blowing operation is started when the water level is A or B, and the blowing operation is not started when the water level is C.

Further, if the water level changes from water level A or B to water level C during blowing operation, the blowing operation is stopped.

In this case, even if the water level is returned from water level C to water level B or A using hot water, etc., the blow operation will remain stopped, and by turning on the operation switch again, the stoppage due to the water level drop can be canceled. This ensures reliable and safe operation.

At this time, a light emitting diode is used on the operation panel section 15 to flash a display indicating the water level drop every second for 15 seconds, and a buzzer is sounded to warn the user.

In addition, in the detection of water levels A-B and C, hysteresis is applied to the output voltage of the pressure detection sensor 12 as a water level detection sensor, taking into account that the water surface of the bath water ripples when a bather enters and leaves the bathtub. is provided to prevent the occurrence of hunting, thereby allowing the control unit C to perform smooth control via the pressure detection sensor 12.

In the bubble-generating bathtub of the present invention, the water levels A-B-C of the water level conditions described above are set based on the reference water level during standard construction, that is, the reference level input into the control unit C in advance. As the water level rises, the water level is lowered to a certain level, and the water levels ABC are determined and stored.

In general, the water level is detected by the pressure detection sensor 12, but in many cases the pressure detection sensor 12 does not have exact accuracy in detecting the water level. Since the water level is sensed by a pressure sensor, it is often difficult to require precise detection of the water level.

Furthermore, in addition to the errors in the pressure detection sensor itself, there are also errors in the circuit of the control section, and furthermore, the high level at the time of construction may cause errors due to special construction, and such errors may occur. In order to eliminate various errors, a reference water level during standard construction is set in advance and the water level is stored in the control section C.

Specifically, for example, during standard construction, the bathtub body l
The full water level or a certain level is set as a reference water level, and the water level is stored in the control section C.

For this purpose, in practice, for example, a switch provided on the back of the panel of the control section C, or a hidden switch formed by a combination of switches on the operation panel section 15, etc., is used as the adjustment switch C-1, and the standard By turning on the adjustment switch C-t with the bath water filled to the reference water level at the time of construction and storing the reference water level in the control unit C,
Even if a level error occurs during subsequent construction, the water will be filled to the standard water level of the bathtub body, and this adjustment switch C-1
By pressing , the standard water level will be automatically reset based on the actual conditions at the time of construction.

Therefore, it is possible to eliminate all the deviations in the set height caused by the settings of the pressure detection sensor 12, the settings of the control circuit, and level errors caused by special construction during construction.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the bathtub body showing the water level sensor adjustment structure of the bubble-generating bathtub of the present invention, Fig. 2 is a control system diagram of the bubble-generating bathtub, and Fig. 3 is an explanatory diagram showing the water level in the bathtub body. . In the figure, A: Bubble generation bathtub P: Circulation pump C: Control unit C-1 = Adjustment switch 1: Bathtub body 2.3, 4: Spout nozzle 5: Air intake section 9: Bathwater suction pipe 10: Bathwater bomb Sending pipe 12: Pressure detection sensor

Claims (1)

[Claims] 1) A bath water suction pipe (9) and a bath water forced delivery pipe (10 ), and a plurality of terminal ends of the forced bath water pipe (10) are opened into the bathtub body to form spout nozzles (2), (3), and (4). A bubble-generating bathtub (A) in which an air intake part (5) is connected in communication with a bath water forced-feeding pipe (10) so that a bath mixed with bubbles can be sprayed from the above-mentioned spray nozzle into the bathtub body (1).
, a pressure detection sensor (1
2), the sensor (12) is configured to be able to detect the water level, and the sensor (12) is used to set a reference water level during standard construction in advance and store that water level in the control unit (C). By doing so, you can avoid offset errors in the pressure sensor and control circuit at the time of factory shipment, deviations in the installation height between the bathtub body and the circulation pump during construction, and standard installation of the circulation pump caused by special piping. A water level sensor adjustment structure for a bubble generating bathtub configured to eliminate all errors such as deviations in set height other than position.