JPH025784Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a water jet bubble generator for bathtubs, and more particularly to a device that generates bubbles by jetting jet water into hot water for bathtubs.

[Prior Art] In recent years, various bathing methods for improving health have been developed, one of which is a method in which a jet water jet is sprayed into hot water using a water jet bubble generator to generate countless fine air bubbles while bathing. It has been known. It is known that the above-mentioned bubbles can produce effects similar to those of ultrasonic waves in the frequency range of 20 to 40 KHz, and can thereby produce a thermal effect, a pine surge effect, a cleaning effect, etc.

[Problems to be solved by the invention] By the way, conventional water bubble generators have a structure in which a motor drives a pump, which sucks up hot water in the bathtub and injects it back into the hot water in the bathtub. It was hot. The motor was driven by electric power. In this way, conventional water bubble generators use electricity, and the electricity is led very close to the hot water in the bathtub, so if a short circuit occurs for some reason, you could get an electric shock, which is very dangerous. It was hot. If a 100V commercial power supply leaked, it would take about 1.7 seconds for the person to die.
Therefore, there was a strong demand for safety measures.

This invention was made in order to solve this problem, and the purpose is to create a water jet bubble generator for a bathtub that is extremely less dangerous even if there is an electrical leakage.

[Means for solving the problems] The water bubble generator for bathtubs according to this invention has the following features:
A motor, a pump driven by the motor, a suction pipe whose one end extends into the bathtub and whose other end is connected to a suction port of the pump, and a discharge pipe whose one end is connected to a discharge port of the pump. , and an injection nozzle connected to a part of the discharge pipe, so that it can be installed in the bathroom, and a cord is pulled out from this unitized water jet bubble generator and a power circuit is installed outside the bathroom. An isolation transformer is used in the power supply circuit. Furthermore, in this invention, the jet nozzle employs a jet flow direct-below method in which jet water is jetted downward from above the hot water surface in the bathtub toward the hot water surface. In addition, noise reduction means are arranged around this jet water flow,
Further, an air supply means for supplying air for generating bubbles is provided within the silencing means.

[Function] In this invention, the insulation transformer of the power supply circuit installed outside the bathroom enhances the insulation effect between the commercial power source and the water bubble generating unit inside the bathroom, thereby improving safety. In addition, this invented scent uses a method directly below the jet stream to generate countless fine air bubbles inside the bathtub. Furthermore, by providing the noise reduction means, the noise generated when the jet water stream rushes into the hot water in the bathtub is reduced.

[Embodiment] FIG. 2 is a perspective view showing a state in which a water jet bubble generator according to an embodiment of this invention is installed in a bathroom.
FIG. 3 is a perspective view of the water bubble generator.
FIG. 4 is a front view showing a partially cut away state of the water bubble generating device. First, these Figure 2~
The configuration of an embodiment of this invention will be explained with reference to FIG. As shown in FIG. 2, the water bubble generator 1 is placed on the edge 3a of the bathtub 3, and is fixed to the wall 2a of the bathroom 2, etc., using mounting screws (not shown). This water bubble generator 1 includes a main body case 4 . This main case 4 is, for example, a box-shaped body made of plastic, and on the front side 4a of the main case 4, an acrylic mirror 5, an oblong colored mirror 6, a perpetual calendar 7, and a landscape painting 8 are arranged as accessories. has been done. Note that these accessories may be changed to other accessories as necessary, or may not be provided. Furthermore, a switch panel 9 is provided on the front surface 4a of the main body case 4. This switch panel 9 is provided with a pilot lamp 91 that indicates that a power supply circuit (described later) of the device is in an on state, and an on/off switch 92 for switching the on/off state of the device. Note that an illuminated push button switch is used as the on/off switch 92.

Inside the main body case 4, there is a motor 10,
A pump 11 driven by this motor 10 is housed. One end of a suction pipe 12 is connected to the suction port of the pump 11 . The other end of the suction pipe 12 projects outward from the bottom surface 4b of the main body case 4 and extends into the hot water 13 in the bathtub 3. Furthermore, one end of a discharge pipe 14 is connected to the discharge port of the pump 11 . This discharge pipe 14 extends upward along the right side surface 4b of the main body case 4, is bent at a right angle in the middle, and extends leftward (in FIG. 4) along the upper surface 4d of the main body case 4. , further bent at a right angle in the middle and extending downward along the left side surface 4e of the main body case 4, further bent at a right angle in the middle and extending in the right direction (fourth direction) along the bottom surface 4b of the main body case 4.
(in the figure). The other end of the discharge pipe 14 protrudes outward from the right side surface 4b of the main body case 4, and a shower device 1 is attached to the tip thereof.
5 is installed. In the discharge pipe 14, a plurality of injection nozzles 17 are provided at appropriate intervals in a portion extending parallel to the bottom surface 4b of the main body case 4, that is, a horizontal portion 14a parallel to the hot water surface 16 in the bathtub 3. It is being These injection nozzles 17 are for injecting jet water onto the hot water surface 16, and are provided perpendicularly to the hot water surface 16. Furthermore, the tip 18 of the injection nozzle 17 is provided so as to be located above the hot water level 16. Note that the injection nozzle 17 may be integrally molded with the discharge pipe 14, or may be prepared as a separate member from the discharge pipe 14 and connected to the discharge pipe 14 during assembly. Here, a cylindrical body 20 is provided on the bottom surface 4b of the main body case 4 so as to surround the outer periphery of the injection nozzle 17. This cylindrical body 20 is intended to reduce noise when the jet water flow hits the hot water surface 16. A gap 21 is formed between the cylindrical body 20 and the outer peripheral surface of the injection nozzle 17, and air flows into the cylindrical body 20 from inside the main body case 4. Further, the lower end of the cylindrical body 20 is located slightly below the hot water level 16 in the bathtub 3.

FIG. 5 is a partially cutaway view enlarging the vicinity of the injection nozzle 17 and the cylindrical body 20. As shown,
The cylindrical body 20 has a small diameter part 22 at its upper end and a large diameter part 23 at its lower end, and the small diameter part and the large diameter part are continuous at a conical part 24. It is preferable that the opening cross-sectional area of the small diameter portion 22 is 25 to 35% of the opening cross-sectional area of the large diameter portion 23 from the viewpoint of sound deadening effect. When the cylinder body is not equipped as above, and when the diameter of the small diameter part is 19 mm,
When comparing the case of installing a cylindrical body with a diameter of 34 mm in the large diameter part through an experiment, the noise was 70 horns in the former case, but became 62 horns in the latter, which was so loud that it became unbearable for conversation in the bathroom. I was able to mute the sound.

FIG. 6 shows the motor 10 and pump 11 shown in FIG.
FIG. In the figure, motor 1
0 is housed inside a motor case 25, and this motor case 25 is covered with a bracket 26 to make it completely waterproof. Further, a cord 27 is connected to the motor 10, and the cord 27 is drawn out from the side of the motor case 25 while maintaining waterproofness. As shown in FIG. 4, the cord 27 pulled out to the outside goes out of the bathroom through a hole 4f made in the back of the main body case 4 and a hole (not shown) made in the wall 2a of the bathroom 2. I am guided.
The cord 27 is connected to a power supply circuit provided in a place other than the bathroom. On the other hand, at the tip of the rotating shaft 10a protruding from the bracket 26,
An impeller 28 is connected. The rotation of the impeller 28 causes suction of the hot water 13. Note that a mechanical seal 2 is provided between the bracket 26 and the impeller 28 on the rotating shaft 10a.
9 has been installed to further enhance the waterproof effect.

As mentioned above, the motor 10 is completely waterproof, and the occurrence of electric leakage accidents is almost completely prevented.

FIG. 1 is a schematic block diagram showing the electric circuit portion of the embodiment described above. In the figure, a power supply circuit 100 is arranged outside the bathroom 2. This power supply circuit 100 includes an isolation transformer 101,
A plug 102 is connected to the primary coil 101a of the isolation transformer 101. In addition,
A fuse 103 and a power switch 104 are inserted between the plug 102 and the primary coil 101a. On the other hand, 2 of the isolation transformer 101
A rectifier circuit 105 is connected to the secondary coil 101b. The output terminal of this rectifier circuit 105 has
One end of the cord 27 is connected. The other end of this cord 27 is guided into the bathroom 2. The positive line of the cord 27 connected to the positive output terminal of the rectifier circuit 105 is connected to the terminal 29a of the switch 29. This switch 29 is a switch that is switched by operating the on-off switch 92, and depending on the switching, the terminals 29a and 2
9b or terminals 29a and 29c are connected. Terminal 29b is connected to one end of pilot lamp 91. Terminal 29c is on/off switch 9
It is connected to one end of a built-in illumination lamp 2 and also to the positive terminal of the motor 10. On the other hand, the negative line of the cord 27 connected to the negative output terminal of the rectifier circuit 105 is
Pilot lamp 91 and on/off switch 9
It is connected to the other ends of the illumination lamps built into the motor 2 and to the negative terminal of the motor 10.

Next, the operation of the above embodiment will be explained. first,
The plug 102 is inserted into a commercial power source (not shown), and the power switch 104 is turned on. Therefore, an AC voltage is induced in the secondary coil 101b of the insulated transformer 102, and the rectifier circuit 105 rectifies the AC voltage into a DC voltage. Here, switch 29
Assume that terminals 29a and 29b of are connected. In this case, the output of the rectifier circuit 105 is applied only to the pilot lamp 91, and the pilot lamp 91 lights up. At this time, the motor 10 is not driven. Next, when the on-off switch 92 is turned on, the switch 29 is changed over, and the terminals 29a and 2
9c is connected. Therefore, the rectifier circuit 105
The output of on/off switch 92 and motor 10
given to. As a result, the illumination lamp built into the on/off switch 92 lights up, and the motor 10 starts rotating. As the motor 10 rotates, the impeller 28 rotates, and the pump 11
is driven. Therefore, the suction pipe 12 sucks up hot water 13 in the bathtub 3 and supplies it to the pump 11. The pump 11 discharges hot water supplied from the suction pipe 12 to the discharge pipe 14. Therefore,
Hot water flows through the discharge pipe 14 and the injection nozzle 17
Hot water is sprayed from the tip 18 of. The injected hot water hits the hot water surface 16 while drawing in the surrounding air. Therefore, countless fine bubbles are generated in the hot water 13. When these bubbles burst, ultrasonic waves are emitted, producing a heating effect, a pine surge effect, a cleaning effect, etc.

Next, when the on/off switch 92 is pressed again, the switch 29 is switched and the terminals 29a and 2
9b is connected. Therefore, the pilot lamp 91 lights up again and the apparatus is stopped.

As described above, in the above embodiment, the power supply circuit 10
0 is located in a different place from bathroom 2, so
Accidents such as leakage caused by hot water 13 entering the power supply circuit 100 can be completely prevented. Furthermore, the power supply circuit 100 is provided with an isolation transformer 101 to provide insulation between the commercial power source and the water bubble generator 1, and the commercial power source is used after lowering the voltage. Even if an electrical leakage accident occurs, it can be completely prevented from endangering human life.

In the above embodiment, a DC motor is used as the motor 10, but if an induction motor or the like is used, the rectifier circuit 105 can be omitted.

[Effects of the invention] As described above, according to this invention, the power supply circuit is installed outside the bathroom, and an isolation transformer is used in the power supply circuit, so that it is possible to prevent electrical leakage accidents through the power supply circuit, and Even if an electrical leakage accident occurs in a circuit unit installed in a bathroom, it will only cause a slight electric shock to the human body, and it can be prevented from developing into a major accident that could claim human life. In addition, this design uses the so-called direct jet method, in which the jet water is directed downward from above and hits the hot water surface in the bathtub, drawing in surrounding air and generating bubbles. The air bubbles generated inside are large and fine. As a result, a large amount of ultrasonic waves can be generated, and extremely healthy bathing effects can be obtained. Furthermore, since this invention is provided with a noise reduction means, the noise generated when the jet water stream rushes into the hot water in the bathtub can be reduced, and the bather will not feel uncomfortable.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing the electric circuit portion of one embodiment of this invention. FIG. 2 is a perspective view showing the water bubble generator according to one embodiment of the invention installed in a bathroom. FIG. 3 is a perspective view of the water bubble generator shown in FIG. 2. Figure 4 is the second
FIG. 4 is a partially cutaway front view of the water bubble generator shown in FIGS. Figure 5 is the 4th
It is a partially cutaway view enlarging the vicinity of the injection nozzle 17 and cylinder body 20 shown in the figure. FIG. 6 is a sectional view of essential parts showing the internal structure of the motor 10 and pump 11 shown in FIG. 4. In the figure, 1 is a water bubble generator, 2 is a bathroom, 3 is a bathtub, 4 is a main body case, 10 is a motor,
11 is a pump, 12 is a suction pipe, 14 is a discharge pipe, 17 is an injection nozzle, 27 is a cord, 100
101 is an isolation transformer, 102 is a plug, and 105 is a rectifier circuit.

Claims (1)

[Claims for Utility Model Registration] (1) A water jet bubble generator for a bathtub that generates bubbles by jetting jet water into hot water in a bathtub, comprising: a motor; a pump driven by the motor; , a suction pipe having one end extending into the bathtub and the other end connected to the suction port of the pump; a suction pipe having one end connected to the discharge port of the pump; and a suction pipe connected to a part of the discharge pipe and having the other end connected to the suction port of the pump. a jet nozzle for jetting the hot water flowing into the pipe almost vertically from above the hot water surface to the hot water surface in the bathtub; , and a silencing means for preventing the sound from leaking to the outside when the jet water flow rushes into the hot water surface in the bathtub; and an air supply means for supplying air for bubble generation into the silencing means. The pump, the suction pipe, the discharge pipe, and the injection nozzle are configured as a unit and installed in a bathtub, and the voltage of a power source connected to the primary side is reduced. a power supply circuit that includes at least an isolation transformer for the purpose of providing a power supply circuit and is configured to be installed outside the bathroom; and a cord that connects the motor installed in the bathroom and the power supply circuit installed outside the bathroom. A water bubble generator for a bathtub, comprising: (2) the pump, at least a portion of the suction pipe, and at least a portion of the discharge pipe;
At least a part of the injection nozzle is housed in one case, and the air supply means is a communication pipe for communicating the silencing means and the case. The water stream bubble generator for bathtubs described in 2. (3) The power supply circuit further includes a rectifier circuit for rectifying the secondary output of the isolation transformer, and the cord connects the motor and the output terminal of the rectifier circuit. The water bubble generator for a bathtub according to item 1.