JP2002191662A - Screw for generating cavitation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a large quantity of air bubbles and ultrasonic waves in running water. SOLUTION: A groove 12 whose section is V-shaped is formed in a part or all of the front end 11A, the rear end 11B or the front end 11C in the lateral direction of a blade 11 of a screw 10 for generating the cavitation along the ridge line of the blade. The turbulence is generated in the groove 12 with the V-shaped section to effectively generate the cavitation, so that a large quantity of air bubble and ultrasonic waves can be generated in the running water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a running water bathing method for health promotion and rehabilitation (generating running water including bubbles and ultrasonic waves by a running water generator in a pool or a bathtub, and exercising in the running water. Or to improve the water quality, or to carry out a health method of running or being hit by running water without moving.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cavitation generating screw that generates running water and efficiently generates a large amount of bubbles and ultrasonic waves in the running water for purifying water quality and removing harmful substances.

[0002]

2. Description of the Related Art The above-mentioned flowing water bath health method and the like are generally known. In this running water bath health method, in order to create running water and to include a lot of bubbles and ultrasonic waves in the running water,
A screw as shown in FIG. 2 is used. By rotating this screw at high speed, running water is created and cavitation is generated. That is, cavitation is generated by rotation of the screw or a baffle plate provided on the downstream side of the screw, and bubbles and ultrasonic waves are generated in flowing water.

[0003]

However, the above screw is originally designed so that the generation of cavitation can be suppressed and water can be efficiently produced. For this reason, even if the screw is rotated at high speed, it is difficult to efficiently generate cavitation, and it is common to install a member that generates cavitation such as a baffle plate facing the downstream side of the screw. .

[0004] The present invention has been made in view of such problems, and an object of the present invention is to provide a cavitation generating screw capable of efficiently generating a large amount of cavitation without using a baffle plate or the like.

[0005]

According to a first aspect of the present invention, there is provided a screw for generating cavitation, wherein the screw having one or a plurality of blades comprises one of a front end, a rear end and a lateral front end of the blade. It is characterized in that a part or the whole is formed in a shape that easily causes turbulence.

According to the above configuration, when the screw is rotated, a turbulent flow occurs at a part or the whole of the front end of the blade and the like, cavitation is generated, and a large amount of bubbles and ultrasonic waves can be generated in flowing water.

A cavitation generating screw according to a second aspect of the present invention is the cavitation generating screw according to the first aspect, wherein a part or all of a front end, a rear end, or a lateral front end of the blade is ridged. And a large area so as to come into contact with water.

With the above configuration, when the blade comes into contact with water in a large area, turbulence is likely to occur. When turbulence occurs, cavitation occurs. Thereby, cavitation can be efficiently generated only with the screw.

A cavitation generating screw according to a third aspect of the present invention is the cavitation generating screw according to the first or second aspect, wherein a part or all of a front end, a rear end, or a lateral front end of the blade is provided. A groove is formed along the ridge line.

With the above configuration, when the blade rotates, turbulence occurs in the groove formed along the ridgeline of the blade, and cavitation can be generated efficiently.

A screw for generating cavitation according to a fourth invention is characterized in that, in the screw for generating cavitation according to the third invention, the groove has a V-shaped cross section.

With the above configuration, when the groove has a V-shaped cross section, turbulence can be efficiently generated. Thereby, cavitation can be generated efficiently.

A cavitation generating screw according to a fifth aspect of the present invention is the cavitation generating screw according to any of the first to fourth aspects, wherein the radius of curvature of the surface of the blade is reduced to prevent laminar flow separation. It is easy to wake up.

With the above configuration, the laminar flow causes separation on the surface of the blade. Thereby, the turbulent flow generated in the groove having the V-shaped cross section located on the upstream side is further disturbed on the surface of the blade.
In addition, turbulence caused by laminar flow separation on the surface of the blade
It is further disturbed by the V-shaped groove or the like located on the downstream side. Thereby, cavitation can be generated efficiently.

A cavitation generating screw according to a sixth aspect of the present invention is the cavitation generating screw according to any one of the first to fifth aspects, wherein the wing is formed to have a large thickness and a front end portion or a rear end portion thereof. A step is provided on one or both sides.

According to the above configuration, by providing a step on one or both of the front end and the rear end of the blade, turbulence occurs at each of the steps, and cavitation can be generated efficiently. .

A screw for generating cavitation according to a seventh aspect of the present invention is the screw for generating cavitation according to the sixth aspect of the present invention, wherein a crushing claw for crushing pebbles or the like is provided on the step.

When the cavitation generating screw having the above structure is used for a stirrer, harmful substances can be efficiently decomposed. In other words, when the soil or the like impregnated with harmful substances is dissolved in water and the screw is rotated at high speed, pebbles etc. of the soil dissolved in the water collide with the crushing nails and are crushed, and the harmful substances that have soaked into the inside flow out. I do. Further, cavitation occurs in the screw, and harmful substances in the water are decomposed. Thereby, soil soaked in harmful substances can be efficiently purified.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a flowing water generator equipped with a cavitation generating screw according to the present invention will be described.
This will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view taken along line AA of FIG. 3 showing a cross-sectional shape of a blade of the cavitation generating screw according to the present embodiment, FIG. 3 is a front view showing a part of the cavitation generating screw, and FIG. It is a perspective view which shows a flowing water generator.

The running water generator 1 according to the present embodiment is shown in FIG.
As shown in (1), it is a device that generates running water containing bubbles and ultrasonic waves in a pool or a bathtub. The running water bathing health method is performed using this device. That is, in the case of a healthy person, in order to promote health and the like, the person enters the running water generated by the running water generator 1 and exercises, or is hit by the running water so as not to be washed away. In addition, in the case of a person with a disability such as hemiplegia, the person enters running water and is hit by running water without moving for rehabilitation. The running water generator 1 is a device for generating a flow of water with a screw and generating a large amount of bubbles due to cavitation and a large amount of ultrasonic waves due to the collapse of the bubbles. When a person is struck by flowing water containing air bubbles or ultrasonic waves, muscles and joints are vibrated by the pressure of the flowing water and ultrasonic waves, and capillaries are stimulated, resulting in various effects on the body.

The running water generator 1 is provided with a cavitation generating screw 10 described later and a drive unit (not shown) for the cavitation generating screw 10. A water outlet 1A is provided on a lower front surface of the water generator 1, and a water inlet (not shown) is provided on a side surface or a back surface. The running water generator 1 is mounted on a support 2.

The support base 2 is composed of a main body 3 for directly supporting the running water generator 1, a foot 4 for supporting the main body 3, and a transfer wheel 5 used for conveying the running water generator 1. ing. The support 2 is located on the shore of the pool,
Has been fixed by.

Cavitation generating screw 10
Is provided with a blade 11 shown in FIG. The blade 11 is formed large and comes into contact with water over a wide area. Further, as shown in FIG. 1, the blade 11 is formed such that its front end 11A is thicker and its thickness becomes thinner toward the rear end 11B. That is, the blade 1
The front end portion 11A of the first member is formed so as to be thick along the ridge line so as to be in contact with water in a wide area, so that turbulence is easily caused. Further, a groove 12 having a V-shaped cross section is formed along the ridge line. The groove 12 allows the water once taken in the inside to be discharged when the water is discharged to the outside.
It collides with the water flowing on the edge of the, causing turbulence. Thereby, cavitation can be efficiently generated, and a large amount of bubbles and ultrasonic waves can be generated in flowing water.

[Operation] The running water generator 1 having the above configuration is used as follows.

The running water generator 1 is installed in a pool or the like as shown in FIG. In this state, the running water generator 1 is operated. Thereby, the cavitation generating screw 10 rotates at high speed. At this time, a turbulent flow occurs in the groove 12 formed in the front end 11A of the blade 11. That is, the groove 12 at the front end of the blade 11 takes in the flowing water once, discharges it outside, and collides with the water flowing along the edge of the groove 12 to cause turbulence. As a result, cavitation is generated efficiently, and a large amount of bubbles and ultrasonic waves can be generated in flowing water.

Water containing a large amount of air bubbles and ultrasonic waves is blown out from the outlet 1A of the flowing water generator 1 to generate flowing water inside a pool or the like. People enter the running water so as not to be washed away and take a bath. A healthy person exercises in the running water or is hit by the running water without moving.

[Effect] As described above, since the grooves 12 are formed in the blades 11 of the cavitation generating screw 10, a large amount of bubbles and ultrasonic waves can be generated efficiently, and the effect of the flowing water bath can be enhanced. Can be. That is, since a large amount of bubbles and ultrasonic waves can be generated in flowing water by the cavitation generating screw 10, effects such as health promotion, relaxation, refreshment, and physical strength can be further enhanced.

[Modifications] (1) In the above embodiment, the groove 12 is formed only in the front end 11A of the blade 11, but the present invention is not limited to this, and the rear end 11B or the lateral front end 11C (see FIG. 3). It may be formed at any of the front end 11A, the rear end 11B, or the lateral front end 11C. In addition, feather 1
1 may be formed over the entire circumference.

When the groove 12 is located at the rear end 11B of the blade 11, water flowing along the surface of the blade 11 is caught in the groove 12 and causes turbulence. In this case, in particular, since cavitation occurs at a position downstream from the surface of the blade 11, the cavitation generating screw 10
Corrosion can be minimized.

Further, the groove 12 is provided at the front end 1 of the blade 11 in the lateral direction.
When it is at 1C, turbulence occurs while draining water at high speed. That is, since the lateral tip 11C has the largest radius as compared with the other portions, it rotates fastest to drain water. For this reason, water flowing outward along the surface of the blade 11 is caught in the inside of the groove 12 of the lateral end portion 11C, causing turbulence.

As a result, cavitation can be efficiently generated from the front end 11A, the rear end 11B or the lateral front end 11C of the blade 11.

(2) In the above embodiment, the groove 12 has a V-shaped cross section, but may have another shape. For example, as shown in FIG. 5, it may be formed in a flat surface orthogonal to the flow of water so as to come into contact with water in a wide area. As a result, water is pushed or caught on the flat surface having a large area to cause turbulence, and cavitation is efficiently generated.

Also, as shown in FIG.
The cross section may be elliptical as shown in FIG. In these cases, as in the case of the V-shaped cross section described above, when the water that has flowed into the inside is discharged to the outside, it collides with the water that flows along the edge of the groove, causing turbulence and efficiently generating cavitation. Let it.

Further, other shapes such as a square cross section may be used as long as the shape can generate turbulence efficiently. Also in this case, cavitation is generated efficiently.

(3) In the above embodiment, only the front end 11A of the blade 11 is made thick along its ridge, but the rear end 11B or the lateral tip 11C is made thick along its ridge. You may. In this case, it may be used in combination with the above-mentioned groove 12, or may be merely thickened. Even just thickening,
Turbulence is likely to occur, and cavitation can be generated efficiently.

(4) In the above embodiment, the grooves 12 are provided on the peripheral edge of the blade 11 so as to generate cavitation efficiently. In addition to the grooves 12, as shown in FIG. The radius of curvature of the surface may be reduced to facilitate laminar flow separation.

In this case, the laminar flow tends to be separated particularly on the downstream surface 21A of the blade 21. Further, since turbulence occurs in the upstream groove 12, the water in which the turbulence occurs is generated by the blades 21.
At the position where it flows along the surface of
At 1A, the turbulence becomes more intense.

When the groove 12 is provided at the rear end of the blade 11, the turbulence caused by the laminar flow separation on the surface of the blade 21 is further disturbed by the downstream groove 12. This is feather 11
The same applies to the case where the groove 12 is provided at the front end in the lateral direction.

Thus, cavitation can be efficiently generated, and a large amount of bubbles and ultrasonic waves can be generated in flowing water.

(5) As shown in FIG. 9, the blades 23 may be formed thick, and a plurality of steps 24 may be provided at the front and rear ends of the upper surface. As a result, turbulence occurs in each of the steps 24 of the blade 23, and cavitation can be generated efficiently.

The step 24 may be provided on the lower surface of the blade 23. Also in this case, turbulence occurs at each of the steps 24, and cavitation can be generated efficiently.

Further, the step 24 may be provided at one of the front end and the rear end of the blade 23. It may be provided on the lower surface of the blade 23. Also in these cases, cavitation can be generated efficiently.

Further, the step 24 may be made of a material excellent in abrasion resistance and impact resistance to add a pulverizing function. In this case, for example, it can be used in a stirrer to decompose toxic substances. When a harmful substance is impregnated in the soil at the site of a factory or the like, the soil is dissolved in water and stirred with a screw having a step 24. By rotating the screw at high speed, pebbles and the like among the soil dissolved in the water hit the step 24 and are pulverized, and harmful substances that have permeated the inside flow out.
Further, cavitation occurs in the screw, and harmful substances in the water are decomposed. Thereby, soil soaked in harmful substances can be efficiently purified.

At this time, it is desirable to provide a comb-like or saw-tooth-like crushing claw on the step 24 in order to improve the crushing ability against pebbles and the like. Pebbles and the like are efficiently crushed by the crushing claws, and the ability to purify harmful substances is improved.

(6) In the above embodiment, the case where the cavitation generating screw 10 is used in the flowing water generating device 1 used in the flowing water bath health method has been described as an example. However, a device for improving or purifying water quality, It may be used for other devices. It can be used for all devices that need to generate a large amount of bubbles and ultrasonic waves in flowing water by cavitation.

[0046]

As described in detail above, according to the present invention,
The following effects are obtained.

(1) A part or all of the front end, the rear end, or the lateral end of the blade is formed into a shape that easily causes turbulent flow. Therefore, when the screw is rotated, a part of the front end of the blade or the like is formed. Alternatively, turbulence occurs in all, cavitation occurs, and a large amount of bubbles and ultrasonic waves can be generated in flowing water. As a result, the effect of the running water bath can be enhanced,
Effects such as health promotion, relaxation, refreshment, and physical strength building can be further enhanced.
Further, water purification, water quality improvement, and removal of harmful substances can be efficiently performed.

(2) As the shape that easily causes the turbulent flow, a part or the whole of the front end, the rear end or the lateral end of the blade is made thick along the ridge line and comes into contact with water in a wide area. Therefore, when the blade comes into contact with water in a wide area, turbulence occurs, and cavitation can be efficiently generated only with the screw.

(3) Since a groove is formed along a ridgeline at a part or all of a front end, a rear end, or a lateral end of the blade as a shape easily causing turbulence, the blade enters the groove. The turbulence occurs due to the collision of the water flowing with the water flowing along the edge of the groove, and cavitation can be generated efficiently.

The groove may have a V-shaped cross section. Also in this case, cavitation can be generated efficiently.

(4) Since the radius of curvature of the surface of the blade is reduced to facilitate laminar flow separation, cavitation can be generated more efficiently.

(5) Since the blade is formed to be thick and a step is provided at one or both of the front end and the rear end thereof,
Turbulence occurs at each step of the blade, and cavitation can be generated efficiently.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 3) illustrating a blade of a screw for generating cavitation according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a conventional screw.

FIG. 3 is a front view showing a part of the cavitation generating screw according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a flowing water generator according to the embodiment of the present invention.

FIG. 5 is a waist sectional view showing a first modification.

FIG. 6 is a waist sectional view showing a second modification.

FIG. 7 is a waist sectional view showing a third modified example.

FIG. 8 is a waist sectional view showing a fourth modification.

FIG. 9 is a waist sectional view showing a fifth modification.

[Explanation of symbols]

1: running water generator, 2: support base, 3: body 3, 4: foot, 5: transport wheel, 6: fixture, 10: cavitation generating screw, 11: blade, 11A: front end,
11B: rear end, 11C: lateral end, 12: groove.

Claims (7)

[Claims] 1. A screw having one or a plurality of blades, wherein a part or all of a front end, a rear end, or a lateral front end of the blade is formed in a shape that easily causes turbulence. Screw for generating cavitation. 2. The cavitation generating screw according to claim 1, wherein a part or all of a front end, a rear end, or a lateral front end of the blade is thickened along its ridge line and has a large area. A cavitation generating screw, which comes into contact with water. 3. The cavitation generating screw according to claim 1, wherein a groove is formed along a ridgeline at a part or all of a front end, a rear end, or a lateral front end of the blade. A cavitation generating screw characterized by the following. 4. The screw for generating cavitation according to claim 3, wherein the groove has a V-shaped cross section. 5. The cavitation generating screw according to claim 1, wherein a radius of curvature of a surface of the blade is reduced to facilitate laminar flow separation. Generating screw. 6. The cavitation generating screw according to claim 1, wherein the blade is formed thick and a step is provided at one or both of a front end and a rear end thereof. A cavitation generating screw characterized by the following. 7. The cavitation generating screw according to claim 6, wherein a crushing claw for crushing pebbles or the like is provided on the step.