Fine bubble water generator and water supply hose for washing machine with fine bubble water generator

Abstract

To provide a fine bubble water generator which can efficiently and simply reduce bubbles contained in tap water to fine bubbles, and to provide a water supply hose for a washing machine which can provide the washing machine with a fine bubble water generating function while in use. [Solution] This device is comprised of a water inlet plate 5 into which tap water flows, an L-shaped cylinder 7 connected to the water inlet plate 5 and bending the tap water flowing in from the water inlet plate 5 vertically, and a water outlet plate 6 connected to the L-shaped cylinder 7. The inner wall of the L-shaped cylinder 7 has spirally cut irregularities 8, and tap water flowing in from the water inlet plate 5 comes into contact with the irregularities 8 inside the L-shaped cylinder 7, causing turbulence, and when it collides with the inner wall 8 of the vertically bent flow channel in the L-shaped cylinder 7, the air bubbles in the tap water are finely crushed, causing fine bubble water to flow out of the water outlet plate 6.

Description

[Technical Field]

[0001] The present invention relates to a fine bubble water generator that reduces the size of bubbles contained in tap water, and a water supply hose for a washing machine that has the function of generating fine bubble water. [Background technology]

[0002] Fine bubble water (water with fine bubbles) is water that contains a large amount of microbubbles (with diameters of approximately 100 μm or less) and nanobubbles (with diameters of approximately 50 to 500 nm).These bubbled water, which are smaller than pores, penetrate into the gaps in textile fabrics and effectively wash away dirt, and is therefore particularly used in home washing machines.Furthermore, because they can penetrate into pores and sweat glands and effectively remove dirt and sebum, they have also recently come to be used in the fields of beauty and health.

[0003] The cleaning effect of fine bubble water, due to its electrical action, is also attracting attention. The surface of fine bubble water is usually negatively charged, and the bubbles do not coalesce but instead diffuse and float within the water. In contrast, dirt such as oil, sebum, and small foreign objects adhering to fibers is usually positively charged and electrically bonds to the negatively charged object being washed. Therefore, when negatively charged fine bubble water adsorbs to positively charged dirt, it electrically neutralizes it, making it easier to separate the dirt from the object being washed.

[0004] The dirt that has been electrically neutralized and separated from the object to be washed remains adsorbed to the gas-liquid interface of the fine bubble water and rises to the water surface due to the buoyancy of the bubbles, so that the dirt removed from the object to be washed is thoroughly washed in the fine bubble water without adhering to the object again.

[0005] Known methods for generating fine bubble water containing a large amount of fine bubbles include high-speed shearing, pressurized collapse, and cavitation. However, most of these involve sucking air from the outside using an aspirator or forcibly injecting it. One known method is a microbubble generator that generates microbubbles by causing cavitation within a casing of a mixed fluid consisting of a liquid accelerated by an acceleration means and a gas (bubbles with a diameter of about several millimeters) introduced into the casing by a gas-liquid mixing means (see, for example, Patent Document 1).

[0006] Furthermore, as a method for generating microbubbles by cavitation from so-called dissolved air dissolved in water without drawing in air from the outside, a microbubble generator is known which has a first nozzle on the water inlet side, whose cross-sectional area perpendicular to its central axis gradually decreases from the inlet to the outlet, a second nozzle on the water outlet side, which is arranged continuously via a communication passage provided in communication with the outlet of the first nozzle and whose cross-sectional area perpendicular to the central axis gradually increases from the inlet to the outlet, and a gap or side chamber which is open only to the communication passage (see, for example, Patent Document 2).

[0007] A shower head is known as an example of a microbubble generator that uses a cavitation method to generate microbubbles from dissolved air in water and applies it to beauty and health benefits (see, for example, Patent Document 3).

[0008] Similarly, a washing machine equipped with a fluid injection device that injects microbubbles onto laundry in a rotating tub is known as an application of a microbubble water generator that generates microbubbles from dissolved air using a cavitation method (see, for example, Patent Document 4).

[0009] Furthermore, a washing machine hose is also known in which a microbubble water generator is built into a washing machine water supply hose that supplies tap water to the washing machine, rather than having a microbubble water generator inside the washing machine body (see, for example, Patent Document 5). [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-021343 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-136864 [Patent Document 3] Japanese Patent Application Laid-Open No. 2016-002196 [Patent Document 4] Japanese Patent Application Laid-Open No. 2016-209331 [Patent Document 5] Patent No. 7231593 Summary of the Invention [Problem to be solved by the invention]

[0011] However, the microbubble generator disclosed in Patent Document 1 requires a large device to mix gas and liquid by accelerating water stored in a tank, making it unsuitable for home use where a simple type that can be directly connected to a water supply is desired.

[0012] Furthermore, the microbubble generator disclosed in Patent Document 2 may not be able to supply a sufficient amount of water for use because the water flow that has suddenly expanded in the communication passage with the side chamber is reduced in pressure by throttling it with the second nozzle. Therefore, the width of the side chamber in the axial flow direction must be adjusted depending on the water pressure at that time, and it cannot be easily attached to a domestic water pipe.

[0013] The devices described in Patent Documents 3 and 4 enable the use of fine bubble water when showering or doing laundry at home. However, these devices are proposed as appliances in which a microbubble generator is already built into a shower head or washing machine, and are not designed to allow a microbubble generator to be attached to such existing appliances.

[0014] Similarly to the present invention, Patent Document 5 is a water supply hose for a washing machine that gives a normal household washing machine the ability to generate fine bubble water. However, the microbubble water generator built into the washing machine hose has a complex structure and mechanism, and is expensive to manufacture.

[0015] In view of the above problems, the present invention aims to provide a fine bubble water generator that can efficiently reduce the size of bubbles contained in tap water while having a simple structure and mechanism that can be manufactured at low cost, and to provide a water supply hose for a washing machine that gives a domestic washing machine the ability to generate fine bubble water. [Means for solving the problem]

[0016] In order to solve the above problems, the present invention provides The present invention In the first embodiment, a water inlet plate into which tap water flows and a filter connected to the water inlet plate are provided to bend the tap water flowing in from the water inlet plate in a vertical direction. but and a water outlet plate connected to the L-shaped cylinder, The inner wall of the L-shaped cylinder is formed with spirally cut recesses and protrusions, The cross-sectional area of ​​the water flow channel at the center of the L-shaped cylinder is narrowed, The tap water flowing in from the water inlet plate comes into contact with the unevenness in the L-shaped cylinder, causing turbulence. The flow rate of the tap water passing through the narrow central portion of the L-shaped cylinder increases, and the increased flow rate of the tap water is further accelerated by the unevenness formed on the inner wall of the L-shaped cylinder. The present invention provides a fine bubble water generator characterized in that the bubbles in the tap water collide with the water outlet plate, causing them to be finely crushed, resulting in fine bubble water flowing out of the water outlet plate.

[0017] Here, the main components of this fine bubble water generator are: a) It is formed by an L-shaped cylinder that bends the tap water flowing in from the water inlet plate vertically, and b) The inner wall of the L-shaped cylinder has spirally cut recesses and protrusions.

[0018] Due to the interaction of the above-mentioned configurations a) and b) of this fine bubble water generator, in the present invention, the tap water flowing in from the water inlet plate comes into successive contact with the unevenness formed in the L-shaped cylinder, causing turbulence in the tap water, and the air bubbles in the tap water collide with the inner surface of the vertically curved water channel, breaking them into fine particles, causing fine bubble water to flow out of the water outlet plate.

[0019] In addition, the water inlet plate has multiple water inlet holes for passing tap water, and the multiple water inlet holes on the water inlet plate are arranged concentrically and equally spaced apart a predetermined distance from the center of the water inlet plate.

[0020] As a result, the tap water entering the water inlet plate collides with and comes into contact with the unevenness inside the L-shaped cylinder at an increased speed as the flow path is narrowed by the water inlet holes, and the air bubbles in the tap water are first crushed into fine particles.

[0021] The outlet plate is provided with a plurality of outlet holes for discharging the fine bubble water generated in the fine bubble water generator, and the outlet holes are arranged concentrically at equal intervals a predetermined distance from the center of the outlet plate, so that the fine bubble water (fine bubble water) pushed out from the outlet plate is discharged at a reduced water flow velocity.

[0022] The L-shaped cylinder is formed by cutting a linear cylinder to a predetermined length, making the spiral cut on the inner surface of the cylinder, and then bending the cylinder into an L shape.

[0023] This makes the bent part thinner, narrowing the cross-sectional area of ​​the flowing water at the center of the L-shaped cylinder, which increases the flow rate of tap water and contributes to the generation of finer aerated water bubbles.

[0024] For this reason, it is desirable that the L-shaped cylindrical body be made of brass material so that it can be easily bent into an L shape.

[0025] The present invention is The present invention In a second aspect, there is provided a water supply hose for a washing machine with a fine bubble water generator, the water supply hose comprising: a coupler joint part having a joint socket that can be detachably connected to a joint plug attached to a tap water faucet; a fine bubble water generator having a water inlet connected to the coupler joint part; and a water supply hose that connects the water outlet of the fine bubble water generator to the water inlet of the washing machine, The fine bubble water generator comprises a water inlet plate constituting the water inlet section and into which tap water flows, a water outlet plate constituting the water outlet section and from which fine bubble water is released, and a connector connecting the water inlet plate and the water outlet plate. inner wall The spiral cuts create a textured surface. TaL a U-shaped cylinder; The cross-sectional area of ​​the flow channel at the center of the L-shaped cylinder is narrowed, The tap water flowing in from the water inlet plate is The aforementioned Contact with uneven surfaces causes turbulence, The flow rate of the tap water passing through the narrow central portion increases, and the increased flow rate of the tap water is further absorbed by the unevenness formed on the inner wall of the L-shaped cylinder. When the bubbles collide with the water, they are broken down into fine bubbles, and fine bubble water is released from the water outlet plate. of Formed to flow The present invention provides a water supply hose for a washing machine equipped with a fine bubble water generator, characterized by: .

[0026] Here, the water inlet plate is provided with a plurality of water inlet holes through which tap water supplied from a tap water faucet passes, and the plurality of water inlet holes on the water inlet plate are arranged at equal intervals in a concentric pattern at a predetermined distance from the center of the water inlet plate.

[0027] The water outlet plate is provided with a plurality of water outlet holes for discharging the fine bubble water generated in the fine bubble water generator, and the plurality of water outlet holes on the water outlet plate are arranged at equal intervals in a concentric pattern at a predetermined distance from the center of the water outlet plate.

[0028] Thus, the present invention is composed of a water inlet plate having multiple holes through which tap water flows, an L-shaped cylinder connected to the water inlet plate and bending the tap water flowing in from the water inlet plate vertically, and a water outlet plate having multiple holes connected to the L-shaped cylinder.

[0029] The inner wall of the L-shaped cylinder has spirally cut unevenness, and tap water flowing in from the water inlet plate comes into contact with the unevenness inside the L-shaped cylinder, creating turbulence, and collides with the inner surface of the vertically bent water channel, causing the air bubbles in the tap water to be finely crushed, allowing high-concentration fine bubble water to efficiently flow out of the water outlet plate. [Brief explanation of the drawings]

[0030] [Figure 1] 1A and 1B are cross-sectional views illustrating the configuration of a fine bubble water generator according to the present invention. [Figure 2] The installation positions and configurations of the water inlet plate and water outlet plate that make up this fine bubble water generator are shown. [Figure 3] This shows the spirally cut recesses and protrusions on the inner surface of the L-shaped cylinder that constitutes this fine bubble water generator. Part (a) shows a side cross-sectional view along the water channel, and part (b) shows an A-A' cross-sectional view of the water channel. [Figure 4] 1 shows an overall configuration diagram of a water supply hose for a washing machine with a fine bubble water generator according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] FIG. 1 is a cross-sectional view of the fine bubble water generator according to the present invention, illustrating the configuration of the fine bubble water generator to facilitate understanding of its internal structure.

[0032] As shown in Figure 1, this fine bubble water generator is composed of a water inlet plate 5 into which tap water flows, an L-shaped cylinder 7 connected to the water inlet plate 5 and bending the tap water flowing in from the water inlet plate 5 vertically, and a water outlet plate 6 connected to the L-shaped cylinder 7. The inner wall of the L-shaped cylinder 7 has spirally cut irregularities 8 formed on it, and the tap water flowing in from the water inlet plate 5 comes into contact with the irregularities 8 in the L-shaped cylinder 7, causing turbulence. When the tap water collides with the inner wall 8 of the vertically bent flow channel in the L-shaped cylinder 7, the air bubbles in the tap water are finely crushed and fine bubble water flows out of the water outlet plate 6.

[0033] In this fine bubble water generator, the tap water flowing in through the water inlet plate 5 comes into successive contact with the irregularities 8 formed in the L-shaped cylinder 7, causing turbulence in the tap water, and the air bubbles in the tap water collide with the inner surface of the vertically curved water channel, causing them to be finely crushed, and fine bubble water flows out of the water outlet plate 6.

[0034] FIG. 2 shows the mounting positions and configurations of the water inlet plate 5 and water outlet plate 6 that make up the fine bubble water generator 1.

[0035] As shown in FIG. 2, the water inlet plate 5 is disposed in close contact with the water inlet surface of the L-shaped cylinder 7, and the water outlet plate 6 is disposed in close contact with the water outlet surface of the L-shaped cylinder 7.

[0036] 2, water inlet plate 5 is provided with three water inlet holes 5-1, 5-2, and 5-3 for allowing tap water to pass into L-shaped cylinder 7. The number of water inlet holes drilled in water inlet plate 5 may be, for example, 2 to 6, depending on the water pressure of the tap water, etc. The multiple water inlet holes 5-1, 5-2, and 5-3 drilled in water inlet plate 5 are arranged concentrically and equidistantly at a predetermined distance from the center of water inlet plate 5.

[0037] Similarly, the water outlet plate 6 is provided with a plurality of water outlet holes 6-1, 6-2, 6-3, 6-4 for discharging the fine bubble water generated in the fine bubble water generator 1, particularly in the L-shaped cylinder 7. The number of water outlet holes drilled in the water outlet plate 6 may be, for example, 2 to 6, depending on the water pressure of the tap water, etc.

[0038] The plurality of water outlet holes formed in the water outlet plate 6 are arranged concentrically at equal intervals at a predetermined distance from the center of the water outlet plate 6 .

[0039] The L-shaped cylinder 7 is formed by cutting a straight cylinder to a specified length, making spiral cuts 8 on the inner surface of the cylinder, and then bending it into an L shape. This narrows the water channel at the L-shaped bend, constricting the water flow there and increasing the speed of the water flow, further promoting the atomization of fine bubble water. For this reason, the L-shaped cylinder 7 is made of brass, which is easy to bend.

[0040] Figure 3 shows the spirally cut irregularities 7 on the inner surface of the L-shaped cylinder 7 that constitutes this fine bubble water generator 1, where part (a) shows a side cross-sectional view along the water channel, and part (b) shows an A-A' cross-sectional view of the water channel.

[0041] As shown in Figure 3, tap water entering through the multiple water inlet holes 5-1, etc. of the water inlet plate 5 enters the L-shaped cylinder 7, collides with the spirally cut irregularities 8 on the inner surface of the L-shaped cylinder 7, and reaches the L-shaped bend where it is suddenly bent vertically to the L, creating large turbulence as it continues to collide again with the spirally cut irregularities 8 on the inner surface of the L-shaped cylinder 7, further promoting the atomization of fine bubble water.

[0042] Then, the water reaches the water outlet plate 6 and is discharged from the water outlet holes 6-1 and the like drilled in the water outlet plate 6.

[0043] FIG. 4 shows an overall configuration diagram of a water supply hose 10 for a washing machine with a fine bubble water generator according to a second embodiment of the present invention.

[0044] In Figure 4, this water supply hose 10 for a washing machine with a fine bubble water generator consists of a coupler joint part 2 equipped with a joint socket 4 that can be detachably connected to a joint plug 3 attached to a tap water faucet 13, a fine bubble water generator 1 whose water inlet is connected to the coupler joint part 2, and a water supply hose 11 that connects the water outlet of the fine bubble water generator 1 to the water inlet 21 of the washing machine 20.

[0045] The fine bubble water generator 1 incorporated into this washing machine water supply hose 10 is the fine bubble water generator shown in Figures 1 to 3 and described above, and is composed of a water inlet plate 5 into which tap water flows, an L-shaped cylinder 7 connected to the water inlet plate 5 and bending the tap water flowing in from the water inlet plate 5 vertically, and a water outlet plate 6 connected to the L-shaped cylinder 7. The inner wall of the L-shaped cylinder 7 has spirally cut irregularities 8, and the tap water flowing in from the water inlet plate 5 comes into contact with the irregularities 8 in the L-shaped cylinder 7, causing turbulence. When the tap water collides with the inner wall 8 of the vertically bent flow channel in the L-shaped cylinder 7, the air bubbles in the tap water are finely crushed and fine bubble water flows out of the water outlet plate 6.

[0046] This washing machine water supply hose 10 with a fine bubble water generator is equipped with a coupler joint portion 2 equipped with a joint socket 4, which is currently the standard specification for washing machine water supply hoses, that is, a joint plug 3 attached to a tap water faucet 13, which can be detachably connected.

[0047] Details of an example of a coupler joint portion 2 equipped with a joint socket 4 that is detachably connected to a joint plug 3 attached to a tap water faucet 13 are as described in Patent Document 5 (Patent Publication No. 7231593), for example.

[0048] This allows users to simply replace the washing machine water supply hose currently in use with this washing machine water supply hose 10 with a fine bubble water generator, thereby giving the washing machine currently in use the fine bubble water generation function.

[0049] This allows the fine bubble water to penetrate the gaps in the fiber structure and effectively wash away dirt. Furthermore, dirt such as oil, sebum, and small foreign matter adhering between fibers is usually positively charged and electrically bonds to the negatively charged object being washed. Therefore, when the negatively charged fine bubble water adsorbs onto the positively charged dirt, it electrically neutralizes it, making it easier to separate the dirt from the object being washed. [Explanation of symbols]

[0050] 1 Fine bubble water generator 2 Coupler joint 3 Joint plug 4 joint socket 5 Water entry plate 5-1 Water inlet hole (water inlet plate) 6. Izumi Plate 6-1 Outlet hole (outlet plate) 7 L-shaped cylinder 8 Spiral grooves (inner wall of L-shaped cylinder) 9 Hose connection 10 Water supply hose for washing machine with fine bubble water generator 11 Water supply hose 12 Water outlet connection connected to water supply hose 13 Tap water faucet 20. Washing Machine 21 Washing machine water inlet

Claims

1. A water inlet plate into which tap water flows, An L-shaped cylinder connected to the water inlet plate that bends tap water flowing in from the water inlet plate in a vertical direction; a water outlet plate connected to the L-shaped cylinder; It consists of The inner wall of the L-shaped cylinder is formed with spirally cut recesses and protrusions, and The cross-sectional area of ​​the flow channel at the center of the L-shaped cylinder is narrowed, This fine bubble water generator is characterized in that tap water flowing in from the water inlet plate comes into contact with the unevenness inside the L-shaped cylinder, causing turbulence, the flow speed of the tap water passing through the narrow central part of the L-shaped cylinder increasing, and the faster flowing water then collides with the unevenness formed on the inner wall of the L-shaped cylinder, causing the air bubbles in the tap water to be finely crushed and fine bubble water to flow out of the water outlet plate.

2. The water inlet plate is provided with a plurality of water inlet holes through which tap water can pass, The fine bubble water generator according to claim 1, wherein the plurality of water inlet holes formed in the water inlet plate are arranged at equal intervals in a concentric circle at a predetermined distance from the center of the water inlet plate.

3. The water outlet plate is provided with a plurality of water outlet holes for discharging the fine bubble water generated in the fine bubble water generator.

3. The fine bubble water generator according to claim 1, wherein the plurality of water outlet holes formed in the water outlet plate are arranged at equal intervals in a concentric circle at a predetermined distance from the center of the water outlet plate.

4. The fine bubble water generator according to claim 1, wherein the L-shaped cylinder is made of brass.

5. a coupler joint portion having a joint socket that is detachably connected to a joint plug attached to a tap for tap water; a fine bubble water generator having a water inlet connected to the coupler joint; a water supply hose for a washing machine with a fine bubble water generator, the water supply hose comprising: a water outlet portion of the fine bubble water generator; and a water supply hose connecting a water inlet of the washing machine; The fine bubble water generator comprises: A water inlet plate that constitutes the water inlet section and into which tap water flows; a water outlet plate that constitutes the water outlet section and discharges fine bubble water; an L-shaped cylinder that connects the water inlet plate and the water outlet plate and has an inner wall with unevenness created by spiral cuts; The cross-sectional area of ​​the flow channel at the center of the L-shaped cylinder is narrowed, This water supply hose for a washing machine with a fine bubble water generator is characterized in that tap water flowing in from the water inlet plate comes into contact with the unevenness inside the L-shaped cylinder, causing turbulence, the flow speed of the tap water increasing as it passes through the narrow central section, and the faster tap water then collides with the unevenness formed on the inner wall of the L-shaped cylinder, causing air bubbles in the tap water to be finely crushed, and fine bubble water is discharged from the water outlet plate.

6. The water inlet plate is provided with a plurality of water inlet holes through which tap water supplied from a tap passes, 6. The water supply hose for a washing machine with a fine bubble water generator according to claim 5, wherein the plurality of water inlet holes formed in the water inlet plate are arranged at equal intervals in a concentric pattern at a predetermined distance from the center of the water inlet plate.

7. The water outlet plate is provided with a plurality of water outlet holes for discharging the fine bubble water generated in the fine bubble water generator.

7. A water supply hose for a washing machine with a fine bubble water generator according to claim 5 or 6, wherein the plurality of water outlet holes formed in the water outlet plate are arranged at equal intervals in a concentric circle at a predetermined distance from the center of the water outlet plate.

8. 8. The water supply hose for a washing machine with a fine bubble water generator according to claim 7, wherein the number of water inlet holes formed in the water inlet plate is three.

9. 9. The water supply hose for a washing machine with a fine bubble water generator according to claim 8, wherein the number of water outlet holes formed in the water outlet plate is four.

10. 10. The water supply hose for a washing machine with a fine bubble water generator according to claim 9, wherein the water inlet plate and the water outlet plate are made of brass, resin, or stainless steel.

11. The water supply hose for a washing machine with a fine bubble water generator according to claim 10, wherein the L-shaped cylindrical body is made of brass.

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