KR20210108158A - Shower Head - Google Patents

Abstract

The present invention relates to a shower head that improves the skin health of a user by inducing cavitation and Coanda effect. In the shower head according to the present invention, microbubbles are generated according to a cavitation effect of a fluid sprayed to a user, and the microbubbles generated in this way flow along the surface of an object according to the Coanda effect to improve effects of washing, stimulating, lowering temperature, and improving lubricity of the surface of the object.

Description

A shower head that improves the user's skin health {Shower Head}

The present invention relates to a shower head, and more particularly, to a shower head for improving skin health of a user by inducing cavitation and Coanda effect.

The shower is a device that allows the user to take a shower by spraying water toward the user when the user takes a shower.

However, even if a high pressure above a certain level or a lot of water is supplied to the user, the shower effect and satisfaction of the user are not improved in direct proportion to this.

Korean Patent Registration No. 10-1350135 (fluid vortex generator) Korean Patent Laid-Open Patent No. 2003-0093374 (Cutting oil mixing and supplying device for machine tools)

Accordingly, the present invention has been proposed in consideration of the above matters, and the present invention is to provide a shower head capable of generating cavitation and Coanda effect in the fluid supplied to the surface of the object to remove contamination from the surface of the object and improve lubricity. do.

In the shower head according to the embodiments of the present invention, the introduced fluid rotates along the propeller-shaped wing portion to generate micro-bubbles inside the introduced fluid due to bubble cavitation phenomenon and the cavitation Coanda generation that is provided at the rear end of the generating unit, and causes the fluid containing the microbubbles to pass through the Coanda generating protrusions and to generate a Coanda effect, which causes the fluid to flow along the surface of the object as the flow rate rises and the pressure decreases to generate the Coanda effect includes wealth.

In the shower head according to the present invention, microbubbles are generated according to the cavitation effect of the fluid sprayed to the user, and the microbubbles generated in this way flow along the surface of the object according to the Coanda effect to wash the surface of the object, stimulate it, lower the temperature, and Effects such as lubricity can be improved.

1 is a perspective view showing a state of a fluid supply device according to a first embodiment of the present invention.
2 is a perspective view showing the front end of the fluid supply device according to the first embodiment of the present invention.
3 is a reference diagram illustrating the internal structure of the fluid supply device according to the first embodiment of the present invention.
4 to 6 are reference views illustrating the appearance of the Coanda generating protrusions applied to the fluid supply apparatus according to the embodiments of the present invention.
7 to 8 are reference views showing the state of the fluid supply device according to the second embodiment of the present invention.
9 is a reference view showing a state of a fluid bearing applied to the fluid supply device according to FIGS. 7 to 8 .
10 is a reference view showing a state of a fluid supply device according to a third embodiment of the present invention.
11 is a reference view showing the appearance of an external case that can be provided in the fluid supply device according to the embodiments of the present invention.

Before describing the embodiments according to the present invention in detail, the present invention is not limited to the configurations shown in the following detailed description or the accompanying drawings, which can be used or carried out in various ways.

It is also to be understood that the phraseology or terminology used herein is for the purpose of description only and should not be regarded as limiting.

That is, as used herein, the expressions "mounted," "installed," "connected," "connected," "supported," "coupled," etc. It is used as a broad expression including both direct and indirect mounting, installation, connection, connection, support, and coupling. The expressions “connected”, “connected”, “coupled” are not limited to a physical or mechanical connection, connection, or coupling.

And in this specification, terms indicating a direction such as upper, lower, downward, upward, rearward, bottom, front, rear, etc. are used to describe the drawings, but these terms are used in a direction relative to the drawing for convenience (normally viewed). when) is indicated. These directional terms are not to be taken as literally limiting or limiting the invention in any form.

In addition, terms such as "first", "second", "third", etc. used herein are for illustrative purposes only and should not be construed as implying a relative importance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a fluid supply device 10 (hereinafter referred to as a 'fluid supply device') for inducing cavitation and Coanda effect according to a first embodiment of the present invention. The fluid supply apparatus 10 according to the example includes a cavitation generating unit 100 and a Coanda generating unit 200 .

The cavitation generating unit 100 allows the fluid to contain microbubbles through the cavitation effect, and the Coanda generating unit 200 uses the Coanda effect to convert the fluid containing microbubbles to the surface of the processing object having various shapes, such as a circle. It maximizes the effect of temperature reduction and lubricity of the object to be processed.

First, the cavitation generating unit 100 is provided with a cylindrical body portion as shown in FIG. 1 , and the wing portion 110 is formed along the periphery of the body portion. And, as shown in FIG. 2 , a first fluid diffusion part 122 is formed in the center of the surface of the front end.

And the turbulence forming part 120 is formed along the periphery of the center of the surface of the tip part.

The wing unit 110 is formed in the form of a propeller along the circumference of the cylindrical body, and the propeller has a thick wing and a small angle of attack as shown in FIGS. 1 and 2 . Through this, it induces a bubble-type cavitation phenomenon in which microbubbles are generated near the maximum thickness position of the wing part 110 to occur.

Therefore, the microbubbles generated through the cavitation phenomenon are supplied to the surface of the object to be processed and generate micro-vibrations on the surface of the object to remove foreign substances generated on the surface of the object to be processed and improve the lubricity of the object to be processed.

Next, the front end of the cavitation generating unit 100 has a flat surface as cut as shown in FIG. 2 . This is so that the fluid supplied to the cavitation generating unit 100 collides with a flat surface to generate turbulence and vortex. As described above, when turbulence and eddy currents are generated at the tip of the cavitation generating unit 100 , the cavitation phenomenon generated in the wing unit 110 is increased to increase the amount of microbubbles generated.

In addition, a turbulence forming unit 120 in the form of a triangular groove is provided at the tip of the cavitation generating unit 100, so that the fluid supplied to the cavitation generating unit 100 collides with each other flat surfaces or flows into the triangular groove and is mixed while returning. The effect of generating turbulence and vortex generated at the tip of the back cavitation generating unit 100 is further improved.

The shape of the turbulence forming part 120 can be freely implemented according to the user's selection other than the triangular groove shape shown in FIG. 2 .

Next, the first fluid diffusion unit 122 is formed at the tip of the cavitation generating unit 100 . The first fluid diffusion part 122 is formed to increase the flow rate of the fluid.

That is, the flow rate of the fluid passing through the cavitation generating unit 100 may be lowered due to resistance at the flat tip or wing unit 110 , and when the flow rate is lowered in this way, the Coanda phenomenon occurs in the Coanda generating unit 200 . A decrease in effectiveness or a decrease in the rate of fluid supply to the workpiece may be made to reduce the lubrication effect.

Accordingly, as shown in FIG. 3 , the present invention allows the fluid to pass through the center of the cavitation generating unit 100 having the highest flow velocity without significant resistance through the first fluid diffusion unit 122 and to be sprayed onto the outer peripheral surface of the cylindrical body. It meets the fluid passing through the flat tip or wing portion 110 of the cavitation generating unit 100 to increase the flow rate.

The first fluid diffusion unit 122 may be implemented according to a user's selection, such as a shape to further increase the flow rate or to further increase the pressure, in addition to the shape shown in FIG. 3 . That is, it can be implemented in various forms, such as making the size of the outlet smaller than the inlet or vice versa, or changing the cross-sectional area of the internal pipe.

Next, the Coanda generating unit 200 will be described. As shown in FIG. 1 , the Coanda generating unit 200 includes a plurality of Coanda generating protrusions 210 along the circumference of the cylindrical Coanda body.

The Coanda effect refers to the effect that the fluid that is rapidly injected comes into contact with the object and flows to the surface of the object. As the fluid adheres and flows, the lubrication effect can be maximized.

The present invention induces the Coanda effect to occur in the fluid by rapidly accelerating the fluid by passing the Coanda generating protrusion 210 .

In addition, the microbubbles generated through the cavitation phenomenon collide with the Coanda generating protrusion 210 and are divided into smaller microbubbles to increase the amount of microbubbles generated and the effect of the microbubbles.

Coanda generated protrusion 210 is a rhombus shape shown in FIG. 1, or a rhombus shape having a curvature on the inside as shown in FIG. 4 (a), an angled figure 8 shape (b), or a triangular prism shape (c) ) can be freely implemented according to the user's choice.

And the arrangement of the Coanda generating protrusions 210 is shown in FIG. 6 and the Coanda generating protrusions 210 are arranged on the same line and in the same direction along the circumference of the cylindrical Coanda body part as shown in FIG. As described above, the Coanda generating protrusions 210 can be freely implemented according to the user's choice, such as a shape forming a right angle with each other.

However, the Coanda generating protrusion 210 according to the preferred embodiment of the present invention has a rhombus shape as shown in FIG. 5, the vertices of the rhombuses are located on the same line (X, Y), and the hypotenuses of the rhombuses are the same. It is preferable to position (Z) on the line.

The following is an experimental example for various embodiments, such as an experimental example in which a cutting tool is machined by supplying a lubricating fluid through various embodiments under the same conditions (lubricating fluid supply amount, supply speed, pressure, and processing tool state, etc.) When the Anda generating protrusion 210 has a rhombus shape, the vertices of the rhombuses are positioned on the same line (X, Y), and the hypotenuses of the rhombus are positioned on the same line (Z), the highest production (number of machining) indicated.

[Experimental example] division rhombus shape inner curvature rhombus angled figure 8 shape triangular pole shape collinear position 120 pieces 112 108 113 orthogonal position 108 101 97 105

In this way, when the Coanda generating protrusion 210 has a rhombus shape, the vertices of the rhombuses are positioned on the same line (X, Y), and the hypotenuses of the rhombuses are positioned on the same line (Z), the fluid supply device 10 ) is easy to process, so the production efficiency is further improved.

The interval between the Coanda generating protrusions 210 is increased toward the rear end of the Coanda generating unit 200, thereby maximizing the occurrence of the Coanda effect.

Next, a second fluid diffusion unit 124 is formed in the Coanda generator 200 as shown in FIG. 3 .

The second fluid diffusion part 124 is a through hole passing through the Coanda generating protrusion 210 so that the fluid is smoothly diffused to the outside of the cylindrical Coanda body part.

The second fluid diffusion unit 124 may be implemented in a zigzag form along the longitudinal direction of the fluid supply device 20 as shown in FIG. 7 .

Next, as shown in FIG. 4 , the Coanda generating protrusion 210 has a shorter length than the lower end (b) at the upper end (a) with respect to the central axis. That is, the upper end (a) and the lower end (b) preferably have a ratio of 1: 0.85 to 0.95, because the flow rate increases toward the lower end by having such a ratio to maximize the Coanda effect.

Next, the length (c) of the central axis of the Coanda generating protrusions 210 preferably has a length of 80% to 90% of the length of the upper end (a), and the spacing between the Coanda generating protrusions 210 (d) It is preferable to have a length of 80% to 90% of the length of the upper end (a).

This is to maximize the Coanda generating effect and the microbubble crushing effect. When the interval d between the Coanda generating protrusions 210 is widened, the flow rate is decelerated to reduce the Coanda effect, and the Coanda generating protrusions 210 This is because, when the gap (d) between ) is narrowed, the pressure increases, and the microbubbles merge with each other as the pressure increases, thereby reducing the amount of bubble generation.

Next, the Coanda generating unit 200 includes a fluid supplying unit 300. The fluid supplying unit 300 contains microbubbles as described above and the fluid passing through the Coanda generating protrusions 210 so that the Coanda effect can occur. As the pressure decreases while passing through the fluid supply unit 300 forming the curved surface, the Coanda effect is maximized so that the fluid is discharged along the curved surface.

To this end, the fluid supply unit 300 has an elliptical shape, and the shape of the outer case is also the same.

The fluid supply device 10 according to the first embodiment of the present invention greatly improves the lubrication effect of the fluid supplied through such a configuration.

Hereinafter, the fluid supply device 20 according to the second embodiment of the present invention will be described with reference to FIG. 7 .

The fluid supply device 20 according to the second embodiment of the present invention has the same configuration as the first embodiment, but the cavitation generating unit 100 and the Coanda generating unit 200 are separated from each other and cavitation occurs through a fluid bearing. The generator 100 is configured to be rotatable.

That is, as shown in FIGS. 7 and 9 , the cavitation generating unit 100 and the Coanda generating unit 200 have the rear end of the cavitation generating unit 100 forming the outer fluid bearing unit 120 , and the Coanda generating unit 200 . ) forms an inner fluid bearing part 230 inserted into the outer fluid bearing part 120 .

Through this, fluid is inserted between the inner peripheral surface of the outer fluid bearing part 120 and the outer peripheral surface of the inner fluid bearing part 230 as shown in FIGS. 7 and 9 , and a journal bearing part is formed.

Next, a fluid is inserted into the inner bottom surface of the outer fluid bearing part 120 and the upper surface of the inner fluid bearing part 230 to form a trust bearing part.

In addition, oil grooves 121 and 232 may be formed on the inner peripheral surface of the outer fluid bearing part 120 or the upper surface of the inner fluid bearing part 230 , and the upper surface of the inner fluid bearing part 230 is shown in FIG. By forming a flat surface and a tapered surface as in (c) of 8, it can be configured so that oil can be diffused from the flat surface to the tapered surface by pressure.

As described above, when the cavitation generating unit 100 is configured to be rotatable, the generation of bubble-type cavitation can be maximized to increase the generation of microbubbles.

And when a general rolling bearing is used, mixing of foreign substances and wear due to long-term use may occur, which may cause performance degradation and a decrease in production output due to product exchange, but the fluid supply device 10 according to the second embodiment of the present invention can be used semi-permanently because the cavitation generating unit 100 is supported by the Coanda generating unit 200 in a buoyant form through a fluid, and direct contact with each other does not occur even in an external impact, thereby preventing product damage can

And, as shown in FIG. 7 , in the fluid supply device 20 according to the second embodiment of the present invention, the Coanda generator 200 is formed of three separate modules, and is connected through a bearing to each other in different directions. It can be rotated with or configured so that either one is rotatable.

Through this, there is an effect that can further improve the occurrence of the Coanda effect by increasing the generation of vortex and turbulence.

And as shown in FIG. 8 , the fluid bearing insertion part 120 is formed at the rear end of the cavitation generating unit 100 , and the fluid bearing insertion groove 120 is formed at the front end of the Coanda generating unit 200 . It can also be implemented with

Hereinafter, a third embodiment of the present invention will be described. In the fluid supply device 30 according to the third embodiment of the present invention, as shown in FIG. 10 , the Coanda generator 200 is formed to have different diameters. And depending on the user's selection, it is formed into a divided module and can be configured to rotate in different directions or to be able to rotate either one.

Through this, there is an effect that can further improve the occurrence of the Coanda effect by increasing the generation of vortex and turbulence.

11 is a reference view showing the appearance of the outer case portion surrounding the fluid supply device according to embodiments of the present invention, the outer case portion includes a front end case portion 420 and a rear end case portion 510 that can be fastened to each other.

The front-end case part 420 and the rear-end case part 510 have a fluid supply device shape so that the fluid supply device can be accommodated therein and are formed in a hollow shape.

And an external fluid input part 514 is provided at the lower end of the rear end case part 510 . The external fluid input unit 514 is formed in the form of a through hole passing through the rear end case unit 510 and is configured to increase the generation of vortex and turbulence by introducing fluid from the outside into the rear end of the fluid supply device.

Next, the surface of the cavitation generating unit 100 is coated with nanofibers. Nanofibers refer to ultrafine threads having a diameter of only several tens to several hundreds of nanometers. This is because, when the nanofibers are coated, the effect of generating turbulence and vortex is further improved.

The fluid supply apparatus according to the embodiments of the present invention allows many microbubbles to be formed in the fluid supplied to the processing object through such a configuration, and the supplied fluid flows in close contact with various shapes and grooves of the processing object to process the object. It has the effect of maximizing the lubricity of

The present invention is to improve the user's skin health by applying the fluid supply device 10 according to the above embodiments to the shower head.

That is, the cavitation effect and the Coanda effect are generated in the fluid supplied through the fluid supply device 10 to stimulate the user's skin surface through microbubbles, thereby removing foreign substances from the user's skin surface and following the user's skin surface. By allowing the fluid to flow, it enhances the vitality of the user's skin through skin irritation.

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the present invention, which is defined by the limits of the following claims.

10: fluid supply device 100: cavitation generating unit 120: turbulence forming unit
122: first fluid diffusion unit 200: Coanda generating unit 210: Coanda generating protrusion
300: fluid supply unit 514: external fluid input unit

Claims (1)

In the shower head,
a cavitation generating unit 100 in which the introduced fluid rotates along the propeller-shaped wing portion to generate microbubbles inside the introduced fluid due to bubble cavitation; and
Coanda effect, which is provided at the rear end of the cavitation generating unit 100, and the fluid including the microbubbles passes through the Coanda generating protrusions 210, and the flow rate rises and the pressure decreases so that the fluid flows along the surface of the object A shower head including a; a Coanda generator 200 for generating

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