CN112647245A - Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle - Google Patents

Abstract

The invention relates to a micro-bubble spray head and washing equipment with the same. The micro-bubble spray head comprises a water inlet pipe component and a water outlet pipe component, wherein at least one stage of conical part with the diameter being reduced is arranged in the micro-bubble spray head; the water outlet pipe component is provided with a first connecting end provided with a second joint part and a water outlet end comprising a bubbler, in an assembled state, the first joint part and the second joint part are jointed with each other to form a first axial gap between the first joint part and the second joint part, a second radial gap is formed between the surfaces of the first joint part and the second joint part, the first axial gap is communicated with the second radial gap to form an air inlet channel, the outlet of the air inlet channel is close to the minimum diameter opening, water flow accelerated by the at least one-stage diameter-reduced conical part forms negative pressure near the outlet of the air inlet channel through the minimum diameter opening to suck air into the water outlet pipe component and mix with water to generate bubble water, and the bubble water forms micro bubble water when flowing through the bubbler.

Description

Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle

Technical Field

The present invention relates to a microbubble generation device, and particularly to a microbubble showerhead and a washing apparatus having the same.

Background

Micro-bubbles (micro-bubbles) generally refer to micro-bubbles having a diameter of fifty micrometers (μm) or less when the bubbles occur. Micro-bubbles may also be referred to as micro-/nano-bubbles, micro-bubbles or nano-bubbles depending on their diameter range. Microbubbles have a relatively long residence time in a liquid because of their small buoyancy in the liquid. Moreover, the microbubbles will shrink in the liquid until finally breaking, generating smaller nanobubbles. When the microbubbles are broken, high pressure and high temperature heat are locally generated, and thus foreign substances such as organic substances floating in the liquid or adhering to the object can be destroyed. In addition, the microbubbles have negative charges, and easily adsorb positively charged foreign substances floating in the liquid. Therefore, the foreign matter is adsorbed by the microbubbles after it is destroyed by the breaking of the microbubbles, and then slowly floats to the liquid surface. These properties provide the microbubbles with a strong cleaning and purifying power. At present, microbubbles have been widely used in washing apparatuses such as washing machines.

To manufacture microbubbles, microbubble generation devices of different structures have been developed. For example, chinese patent application (CN107321204A) discloses a microbubble generator. This microbubble generator includes that both ends are the shell of opening form, and the first end of shell is connected with the inlet tube, has set gradually vortex post, vortex shell, gas-liquid mixture pipe and has fixed a position the mesh at the second end of shell along the rivers direction in the shell. The gas-liquid mixing pipe is provided with an accommodating cavity, a gas flow part, an accelerating part and a circulating part which are communicated in sequence from the head part to the tail part. The vortex column shell and the vortex column positioned in the vortex column shell are positioned in the accommodating cavity; the pipe wall of the airflow part is provided with an air inlet; the inner wall of the airflow part protrudes towards the direction of the accommodating cavity to form a funnel-shaped protruding part, and a gap for air entering from the air inlet to flow into the airflow part is formed between the large opening end of the funnel-shaped protruding part and the conical vortex shell; the inner diameter of the accelerating part gradually increases towards the tail part. Rivers flow through the vortex post and form high-speed rotatory rivers inside the vortex shell, high-speed rotatory rivers flow out the back from the export of vortex shell and get into the funnel-shaped space that the bulge encloses in, negative pressure that forms around rivers inhales the air from the air inlet and the air gets into acceleration portion after mixing with rivers, because the internal diameter of the toper face of vortex shell and acceleration portion is towards afterbody direction crescent and form pressure differential, make the rivers (formation bubble water) that mix a large amount of air flow with higher speed, bubble water flows to the hole net via circulation portion, bubble water is cut and is mixed by the pore in the hole net and produce the little bubble water that contains a large amount of microbubbles.

Chinese patent application for invention (CN107583480A) also discloses a microbubble generator. This microbubble generator includes that both ends are the shell of opening form, and the first end of shell is connected with the inlet tube, has set gradually pressure boost pipe, bubble generation pipe and has fixed a position the mesh at the second end of shell along the rivers direction in the shell. The bubble generation pipe is formed with holding chamber, gas-liquid mixture portion, expansion guide portion from first end to second end in proper order. Receiving a booster pipe in the accommodating chamber, the booster pipe having a tapered end facing the accommodating chamber; a tapered gas-liquid mixing space with the size gradually reduced along the direction from the first end to the second end is formed in the gas-liquid mixing part; an expansion guide space is formed in the expansion guide portion, and the size of the expansion guide space increases along the direction from the first end to the second end. The pipe wall of the bubble generation pipe is provided with an air inlet channel, a gap is formed between the inner wall of the gas-liquid mixing part and the outer wall of the pressurization pipe so as to be communicated with the air inlet channel on the outer wall of the bubble generation pipe, and the water outlet of the pressurization pipe is arranged in the water inlet of the gas-liquid mixing part. The water flow is pressurized by the pressurizing pipe to form high-speed water flow, the high-speed water flow flows out of the water outlet of the pressurizing pipe and then enters the gas-liquid mixing cavity, negative pressure is formed in the gas-liquid mixing cavity, a large amount of air is sucked into the water flow through the air inlet channel by the negative pressure, the air is mixed with the water to form bubble water, the bubble water flows to the mesh from the expansion guide part, and the bubble water is mixed and cut by the fine holes of the mesh to form micro-bubble water.

Both of the above-described two types of microbubble generators have at least five separate components: a shell, a water inlet pipe, a vortex column, a volute or a pressure increasing pipe, a gas-liquid mixing pipe or a bubble generating pipe, and a mesh. These components all require specific mating or connection structures designed to allow all of the components to be assembled together and to ensure that the assembled microbubble generator will operate reliably. In addition, in order to allow air to be sucked into the microbubble generator from the outside, air passages are required to be provided in the housing and the gas-liquid mixing tube or the bubble generating tube. Therefore, the microbubble generator is relatively complex in components and structure, and also high in manufacturing cost.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problems of complicated structure and high manufacturing cost of the conventional microbubble generator, the present invention provides a microbubble showerhead, comprising: the water inlet pipe component is provided with a water inlet end allowing water to flow in and a first connecting end, the first connecting end is provided with a first joint part, at least one stage of diameter-reducing conical part is arranged in the first connecting end along the water flow direction, and a minimum diameter opening is formed at the top of the at least one stage of diameter-reducing conical part; a water outlet pipe member having a second connection end and a water outlet end, the second connection end being provided with a second engagement portion, the first engagement portion and the second engagement portion being engaged with each other in an assembled state of the water inlet pipe member and the water outlet pipe member, a first axial gap being formed between the first engagement portion and the second engagement portion and a second radial gap being formed between surfaces of the first connection end and the second connection end abutting against each other, the first axial gap and the second radial gap being communicated with each other to form an air intake passage, an outlet of the air intake passage being close to the minimum diameter opening so that when water flows through the minimum diameter opening, a negative pressure is formed near the outlet of the air intake passage and thus external air is sucked into the water outlet pipe member to be mixed with the water to generate bubble water; and a bubbler fixed to the outlet end of the outlet pipe member and having a mesh structure configured to form micro-bubble water when the bubble water flows therethrough.

In a preferred embodiment of the micro bubble showerhead, the at least one tapered portion with a reduced diameter includes a tapered portion with a reduced diameter of a first level and a tapered portion with a reduced diameter of a second level, a minimum diameter of the tapered portion with a reduced diameter of the first level is equal to a maximum diameter of the tapered portion with a reduced diameter of the second level, and the minimum diameter opening is formed at a top of the tapered portion with a reduced diameter of the second level.

In a preferred aspect of the above microbubble showerhead, the microbubble showerhead has an insertion portion that extends from the top portion to inside the water outlet pipe member around the minimum diameter opening.

In a preferred embodiment of the micro bubble showerhead, the first engaging portion is an inner threaded hole wall provided in the first connection end, and the second engaging portion is an outer threaded cylindrical surface provided on the second connection end; or, the first engagement portion is an external cylindrical surface disposed on the first connection end, and the second engagement portion is an internal bore wall disposed within the second connection end; the first axial gap is formed between the internally threaded bore wall and the externally threaded cylindrical surface.

In a preferred embodiment of the microbubble nozzle, the first engaging portion is a smooth hole wall provided in the first connecting end, the second engaging portion is a non-smooth cylindrical surface provided on the second connecting end, the non-smooth cylindrical surface is provided with a plurality of ribs or grooves, and the first axial gap is formed between the smooth hole wall and the non-smooth cylindrical surface.

In a preferred embodiment of the microbubble nozzle, the first engaging portion is a non-smooth hole wall provided in the first connection end, the non-smooth hole wall is provided with a plurality of ribs or grooves, the second engaging portion is a smooth cylindrical surface provided on the second connection end, and the first axial gap is formed between the non-smooth hole wall and the smooth cylindrical surface.

In a preferred embodiment of the micro bubble showerhead, the first engaging portion is a non-smooth hole wall disposed in the first connecting end, the non-smooth hole wall is provided with a plurality of ribs and/or grooves, the second engaging portion is a non-smooth cylindrical surface disposed on the second connecting end, the non-smooth cylindrical surface is provided with a plurality of ribs and/or grooves, and the first axial gap is formed between the non-smooth hole wall and the non-smooth cylindrical surface.

In a preferred technical solution of the micro bubble showerhead, the mesh structure includes a plastic fence, a metal mesh, or a polymer material mesh.

In the preferable technical scheme of the micro-bubble spray head, the diameter range of the holes of the hole mesh structure is 0-1000 microns.

As can be understood by those skilled in the art, in the technical solution of the present invention, the micro bubble spray head includes a water inlet pipe part provided with at least one stage of tapered portion with a reduced diameter inside and a water outlet pipe part provided with a bubbler at a water outlet end, a minimum diameter opening is provided at a top of the at least one stage of tapered portion with a reduced diameter to communicate the water inlet pipe part with the water outlet pipe part, and the air inlet channel is composed of a first axial gap and a second radial gap communicating with each other: the first axial gap is formed between a first joint part of the first connecting end of the water inlet pipe component and a second joint part of the second connecting end of the water outlet pipe component; the second radial gap is formed between the surfaces of the first connecting end and the second connecting end which are abutted against each other. Water flows into the water inlet pipe component from the water inlet end of the water inlet pipe component; the water flow is accelerated in at least one stage of conical part with the diameter reduced; the accelerated water flow is expanded and sprayed into the water outlet pipe part from the opening with the smallest diameter, negative pressure is generated in the second connecting end, and under the action of the negative pressure, a large amount of air is sucked into the water outlet pipe part from the outside through the first axial gap and the second radial gap and is mixed with water to generate bubble water containing a large amount of bubbles; the bubble water finally flows through a bubbler at the water outlet end of the water outlet pipe component to generate micro-bubble water containing a large amount of micro-bubbles. In the technical scheme of the invention, the micro-bubble spray head is formed only by combining the first connecting end of the water inlet pipe component and the second connecting end of the water outlet pipe component, so that the micro-bubble spray head can be regarded as a two-component micro-bubble spray head. Further, the air intake passage is incorporated between the joint portions of the water inlet pipe member and the water outlet pipe member, and therefore, it is not necessary to separately provide an air intake passage at other portions of the micro bubble showerhead. Compared with the prior art, the micro-bubble spray head of the invention not only has good performance of generating micro-bubbles, but also has greatly simplified components and structure, and the manufacturing cost is also obviously reduced.

Preferably, the first engaging portion of the first connecting end of the inlet pipe member is an internally threaded bore wall and the second engaging portion of the second connecting end of the outlet pipe member is an externally threaded cylindrical surface engaged with the internally threaded bore wall, or the first engaging portion of the first connecting end is an externally threaded cylindrical surface and the second engaging portion of the second connecting end is an internally threaded bore wall engaged with the externally threaded cylindrical surface. This forms a first axial gap by the clearance provided between the engaged threads, forming part of the inlet passage. Alternatively, the first engaging portion is a smooth bore wall and the second engaging portion is a non-smooth cylindrical surface having a plurality of ridges or grooves thereon that mate with the smooth bore wall; or the first joint part is a non-smooth hole wall provided with a plurality of convex ridges or grooves, and the second joint part is a smooth cylindrical surface matched with the non-smooth hole wall; alternatively, the first engaging portion is a non-smooth bore wall having a plurality of ribs or grooves formed thereon, and the second engaging portion is a non-smooth cylindrical surface having a plurality of ribs or grooves formed thereon that is complementary to the smooth bore wall. The matching structure between the engaging portions is not limited to the above structure, and may be any one of "rib + groove", "rib + rib", "groove + groove", as long as these matching engaging structures can achieve the purpose of forming the first axial gap between the first engaging portion and the second engaging portion.

The present invention also provides a washing apparatus comprising any one of the microbubble jet heads as described above, the microbubble jet head being arranged to generate microbubble water within the washing apparatus. The micro-bubble shower head generates micro-bubble water containing a large amount of micro-bubbles in the washing apparatus, so that not only the washing capacity of the washing apparatus can be improved, but also the amount of detergent used can be reduced and the residual amount of the detergent in, for example, laundry can be reduced.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a washing apparatus with a microbubble showerhead according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the microbubble showerhead of the present invention;

FIG. 3 is a front view of one embodiment of the microbubble showerhead of FIG. 2;

FIG. 4 is a top view of one embodiment of the microbubble showerhead of FIG. 2;

FIG. 5 is a sectional view of an embodiment of the micro-bubble jet head of the present invention taken along section line E-E of FIG. 4;

fig. 6 is a sectional view of another embodiment of the micro-bubble showerhead of the present invention, taken along section line E-E of fig. 4.

List of reference numerals:

11. a box body; 12. a tray seat; 13; an upper cover; 14. ground feet; 21. an outer tub; 31. an inner barrel; 311. a dewatering hole; 32. an impeller; 33. a drive shaft; 34. a motor; 35. a balance ring; 41. a drain valve; 42. a drain pipe; 51. a water inlet valve; 52. a micro bubble spray head; 521. a water inlet pipe member; 522. a water outlet pipe component; 523. a bubbler; 524A, a first fixed mounting part; 524B, a second fixed mounting part; 525. a first axial gap; 526. a second radial gap; 211. a water inlet end; 212. a first connection end; 213. a first engaging portion; 214. a first cylindrical portion; 215. a second cylindrical portion; 216. a first-stage tapered portion with a reduced diameter; 217. a second step diameter reducing taper; 218. a minimum diameter opening; 219. an insertion portion; 221. a second connection end; 222. a second engaging portion; 223. and (5) a water outlet end.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to solve the problems of complex structure and high manufacturing cost of the existing micro-bubble generator, the invention provides a micro-bubble spray head which comprises a water inlet pipe component and a water outlet pipe component. The water inlet pipe part is provided with a water inlet end allowing water to flow in and a first connecting end which is provided with a first joint part. At least one stage of diameter-reducing conical part arranged along the water flow direction is further arranged in the first connecting end of the water inlet pipe part, and a minimum diameter opening is formed at the top of the at least one stage of diameter-reducing conical part. The water outlet pipe component is provided with a second connecting end and a water outlet end, the second connecting end is provided with a second joint part, and a bubbler is fixed at the water outlet end. The bubbler has a mesh structure arranged to form micro-bubble water as the bubble water flows therethrough. In the assembled state of the water inlet pipe component and the water outlet pipe component, the first joint part and the second joint part are jointed with each other, a first axial gap is formed between the first joint part and the second joint part, a second radial gap is formed between the surfaces of the first connecting end and the second connecting end, and the first axial gap and the second radial gap are communicated with each other to form an air inlet channel. The outlet of the air intake passage is close to the minimum diameter opening so that when water is ejected from the minimum diameter opening, a negative pressure is formed near the outlet of the air intake passage and thus outside air is sucked into the water outlet pipe member to mix the air with the water to generate bubble water. The bubble water is cut and mixed while flowing through the bubbler, thereby generating micro-bubble water containing a large amount of micro-bubbles. The air inlet channel is directly formed between the first joint part of the first connecting end and the second joint part of the second connecting end and between the abutting surfaces of the first connecting end and the second connecting end, and the micro-bubble spray head can be formed by combining the first connecting end of the water inlet pipe component and the second connecting end of the water outlet pipe component. Therefore, compared with the micro-bubble generator in the prior art, the micro-bubble spray head of the invention has greatly simplified component number and structure, greatly reduces the manufacturing cost of the micro-bubble spray head, and keeps good micro-bubble generating performance.

The micro-bubble spray head can be applied to the washing field, the sterilization field or other fields needing micro-bubbles. For example, the micro-bubble sprayer of the invention can be applied to washing equipment and can also be combined into devices such as a bathroom faucet or a shower head.

Therefore, the present invention also provides a washing apparatus comprising the microbubble showerhead of the present invention. The micro-bubble spray head is configured to generate micro-bubble water within the scrubbing apparatus. The micro-bubble water containing a large amount of micro-bubbles is generated in the washing equipment through the micro-bubble spray head, so that the washing capacity of the washing equipment can be improved, the using amount of the detergent can be reduced, the residual amount of the detergent in clothes can be reduced, and the health of a user is benefited.

Referring to fig. 1, fig. 1 is a schematic structural view of an embodiment of a washing apparatus having a micro-bubble spray head according to the present invention. In this embodiment, the washing apparatus is a pulsator washing machine. Alternatively, in other embodiments, the washing apparatus may be a drum washing machine or a dryer, etc.

As shown in fig. 1, a pulsator washing machine (hereinafter, referred to as a washing machine) includes a cabinet 11, a tray 12 is provided at an upper portion of the cabinet 11, and an upper cover 13 is pivotally coupled to the tray 12. An outer tub 21 as a tub is provided in the cabinet 11. An inner barrel 31 is arranged in the outer barrel 21, the bottom of the inner barrel 31 is provided with a wave wheel 32, the lower part of the outer barrel 21 is fixed with a motor 34, the motor 34 is in driving connection with the wave wheel 32 through a transmission shaft 33, and the side wall of the inner barrel 31 is provided with a dewatering hole 311 near the top end. The drain valve 41 is provided on the drain pipe 42, and an upstream end of the drain pipe 42 communicates with the bottom of the outer tub 21. The washing machine further includes a water inlet valve 51 and a micro bubble spray head 52 communicating with the water inlet valve 51, the micro bubble spray head 52 being installed on the top of the outer tub 21. The water enters the micro bubble spray head 52 through the water inlet valve 51 to generate micro bubble water containing a large amount of micro bubbles, and the micro bubble spray head 52 sprays the micro bubble water into the detergent box to be mixed with the detergent, and then enters the inner tub 31 through the detergent box for washing the laundry. The micro-bubbles in the water impact the detergent in the crushing process, and the micro-bubbles can adsorb the detergent through the carried negative charges, so that the micro-bubbles can increase the mixing degree of the detergent and the water, thereby reducing the using amount of the detergent and reducing the residual amount of the detergent on the clothes. In addition, the micro bubbles may also hit dirt on the laundry in the inner tub 31 and may adsorb foreign substances that generate the dirt. Therefore, the micro bubbles also enhance the detergency performance of the washing machine. Alternatively, the micro bubble spray head may also directly spray micro bubble water carrying a large amount of micro bubbles into the outer tub 21 or the inner tub 31 of the washing machine to further reduce the amount of detergent and enhance the cleaning ability of the washing machine.

Referring to fig. 2 to 4, fig. 2 is a schematic perspective view of an embodiment of the microbubble showerhead of the present invention, fig. 3 is a front view of the embodiment of the microbubble showerhead of the present invention shown in fig. 2, and fig. 4 is a top view of the embodiment of the microbubble showerhead of the present invention shown in fig. 2. As shown in fig. 2 to 4, the microbubble sprayer 52 of the present invention includes, as one embodiment, a water inlet pipe section 521 and a water outlet pipe section 522. A bubbler 523 is installed at one end of the water outlet pipe member 522, and the bubbler 523 is of a mesh structure and is disposed to form micro-bubble water when the bubble water passes through.

Optionally, the mesh structure of the bubbler 523 has at least one pore with a diameter of micron order, preferably, the diameter of the pore is between 0-1000 micron; more preferably, the diameter of the fine pores is between 5 and 500 μm. The mesh structure of bubbler 523 may be a plastic fence, a metal mesh, a polymer mesh, or other suitable mesh structure. The plastic fence is generally a polymer fence, which is formed by integrally injection molding a polymer material, or by first forming a sheet from a polymer material and then machining the sheet to form a microporous structure. The polymer material net is usually a net having a microporous structure formed by weaving a polymer material into filaments. The polymer material net may include nylon net, cotton net, polyester net, polypropylene net, etc. Alternatively, the bubbler 523 may be another mesh structure capable of generating micro bubbles, for example, a mesh structure composed of two non-micron-sized honeycomb structures.

Optionally, a first fixed mounting portion 524A and a second fixed mounting portion 524B are provided on the water inlet pipe section 521.

Referring to fig. 3 and 4, the first and second fixing mounts 524A and 524B are symmetrically positioned on both sides of the outer wall of the water inlet pipe section 521 and in the middle of the micro-bubble shower head 52 for fixing the micro-bubble shower head 52 to a predetermined mounting position. Alternatively, the first and second fixing portions 524A, 524B may be provided on the outlet pipe member 522, or only one fixing portion may be provided on the micro bubble shower head 52.

As shown in FIG. 4, in one embodiment, the first and second fixing mounts 524A, 524B are screw hole features. However, the fixed mounting portion may employ any suitable connection structure, such as a snap-fit connection structure, a welded connection structure, or the like.

Referring to fig. 5, fig. 5 is a sectional view of an embodiment of the micro-bubble showerhead of the present invention taken along section line E-E of fig. 4. As shown in fig. 5, the microbubble spray head 52 includes a water inlet pipe section 521 and a water outlet pipe section 522.

As shown in fig. 5, the water inlet pipe part 521 has a water inlet end 211 allowing water to flow in and a first connection end 212 allowing water to flow out of the water inlet pipe part 521. The water inlet pipe member 521 is formed therein with a first cylindrical portion 214, a second cylindrical portion 215, a first-stage diameter-reducing tapered portion 216, a second-stage diameter-reducing tapered portion 217, and a minimum diameter opening 218 in this order along the water flow direction C. The first cylindrical portion 214 extends from the water inlet end 211 to the second cylindrical portion 215, and the inner diameter of the first cylindrical portion 214 is larger than the inner diameter of the second cylindrical portion 215. The second cylindrical portion 215 extends to the first-stage diameter-reducing tapered portion 216 in the water flow direction C, and the inner diameter of the second cylindrical portion 215 is equal to the maximum inner diameter of the first-stage diameter-reducing tapered portion 216. The first-stage diameter-decreasing tapered portion 216 extends to the second-stage diameter-decreasing tapered portion 217 in the water flow direction C, and the minimum inner diameter of the first-stage diameter-decreasing tapered portion 216 is equal to the maximum inner diameter of the second-stage diameter-decreasing tapered portion 217. A minimum diameter opening 218 is formed at the top of the second stage reduced diameter taper 217 to communicate the inlet pipe section 521 with the outlet pipe section 522. A first step diameter reducing taper 216 and a second step diameter reducing taper 217 are positioned within the first connection end 212. Also formed within the first connection end 212 is a first engagement portion 213, the first engagement portion 213 being located downstream of the minimum diameter opening 218 and being in the form of an internally threaded bore wall.

With continued reference to FIG. 5, the outlet tube member 522 has a second connection end 221 and an outlet end 223. The second connection end 221 is located upstream of the water outlet end 223 in the water flow direction C. The second connection end 221 is provided with a second engagement portion 222, and the second engagement portion 222 is a cylindrical surface with an external thread such that the external thread can be engaged with the internal thread of the first engagement portion 213. A bubbler 523 capable of generating microbubbles is fixed at the water outlet end 223. The bubbler 523 may be any suitable mesh structure for generating microbubbles, as set forth in the above examples.

As shown in fig. 5, in a state where the water inlet pipe part 521 and the water outlet pipe part 522 are assembled, the internal thread of the first joint part 213 and the external thread of the second joint part 222 are engaged with each other, and the end surface of the second connection end 221 abuts against a radial abutting surface formed in the first connection end 212. This radial abutment surface is flush with the top planar surface of the second stage reduced diameter cone 217 facing the outlet pipe member 522. A first axial gap 525 (as indicated by the arrow pointing towards the water inlet pipe member 521 in fig. 5) is formed between the internal thread and the external thread and a second radial gap 526 (as indicated by the radial arrow in fig. 5) is formed between the end surface of the second connection end 221 and the abutment surface in the first connection end 212. The first axial gap 525 and the second radial gap 526 communicate with each other to form an intake passage having an outlet near the minimum diameter opening 218 between the top of the second-stage reduced-diameter tapered portion 217 and the second connection end 212. After entering the water inlet pipe member 521, the water flows through the first cylindrical portion 214, the second cylindrical portion 215, the first-stage diameter-reducing tapered portion 216, and the second-stage diameter-reducing tapered portion 217 in this order. The second cylindrical portion 215, the first-stage diameter-decreasing tapered portion 216, and the second-stage diameter-decreasing tapered portion 217 serve to increase the speed of water flow, respectively. The accelerated water is expanded through the smallest diameter opening 218 and into the outlet pipe member 522, thereby creating a negative pressure near the outlet of the inlet passage; a large volume of ambient air is drawn into the outlet pipe member 522 under negative pressure through the first axial gap 525 and the second radial gap 526 and mixes with the water to produce bubble water. The bubble water then flows through the bubbler 523 and is cut and mixed by the bubbler 523 to generate micro-bubble water containing a large amount of micro-bubbles.

Alternatively, a primary diameter-reducing tapered portion is provided in the water inlet pipe member 521, and a minimum diameter opening is formed at the top of the primary diameter-reducing tapered portion; alternatively, three or more stages of the diameter-decreasing tapered portion are formed in the water inlet pipe member 521, and the minimum diameter opening is formed at the top of the most downstream stage of the diameter-decreasing tapered portion in the water flow direction. In addition, the first cylindrical portion 214 and the second cylindrical portion 215 may be replaced with a single cylindrical portion.

Alternatively, the first engagement portion 213 of the first connection end 212 is configured as a male cylindrical surface, and the second engagement portion 222 of the second connection end 221 is configured as a female bore wall (not shown) that mates with the male cylindrical surface. An abutment surface is formed in the second connection end 221. In the assembled state of the water inlet pipe part 521 and the water outlet pipe part 522, the external thread of the first engaging part 213 of the first coupling end 212 engages the internal thread of the second engaging part 222 of the second coupling end 221, and the end surface of the first coupling end 212 abuts against the abutting surface in the second coupling end 221. A first axial gap is formed between the mating male and female threads and a second radial gap is formed between the mutually abutting end faces and abutting faces.

Alternatively, the first engagement portion 213 is a smooth bore wall disposed within the first connection end 212, and the second engagement portion 222 is a non-smooth cylindrical surface disposed on the second connection end 221 and having a plurality of ribs or grooves (not shown). A first axial gap is formed between the smooth bore wall and the non-smooth cylindrical surface.

Alternatively, the first engaging portion 213 is a non-smooth hole wall disposed in the first connecting end 212, the non-smooth hole wall is provided with a plurality of ribs or grooves, and the second engaging portion 222 is a smooth cylindrical surface (not shown) disposed on the second connecting end 221. A first axial gap is formed between the non-smooth bore wall and the smooth cylindrical surface.

Alternatively, the first engagement portion 213 is a non-smooth bore wall disposed within the first connection end 213, the non-smooth bore wall having a plurality of ribs and/or grooves disposed thereon, and the second engagement portion 222 is a non-smooth cylindrical surface disposed on the second connection end, the non-smooth cylindrical surface having a plurality of ribs and/or grooves (not shown). A first axial gap is formed between the non-smooth bore wall and the non-smooth cylindrical surface.

The matching structure of the first joint part and the second joint part of the microbubble nozzle head of the present invention is not limited to the above-mentioned specific list, and for example, the matching structure may be a "rib + rib" structure, a "groove + groove" structure, a "rib + groove" structure, or other suitable matching structure capable of forming a predetermined gap.

Referring to fig. 6, fig. 6 is a sectional view of another embodiment of the microbubble showerhead of the present invention taken along a section line E-E of fig. 4. As shown in fig. 6, an insertion portion 219 is formed on the top of the second-step diameter-reducing tapered portion 217. The insert 219 extends around the minimum diameter opening 218 and into the downstream second connection end 221. The outer peripheral surface of the insertion portion 219 is a tapered surface that gradually shrinks along the water flow direction C. The insertion portion 219 configured in this manner can not only guide the flow of water, but also prevent the water stream ejected from the minimum diameter opening 218 from entering the second radial gap 526 and the first axial gap 525 from the outlet of the intake passage and flowing to the outside of the microbubble head. Other parts of this embodiment not mentioned are the same as those of the previous embodiment.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the invention, a person skilled in the art may combine technical features from different embodiments, and may make equivalent changes or substitutions for related technical features, and such changes or substitutions will fall within the scope of the invention.

Claims (10)

1. A micro bubble showerhead, comprising:

the water inlet pipe component is provided with a water inlet end allowing water to flow in and a first connecting end, the first connecting end is provided with a first joint part, at least one stage of diameter-reducing conical part is arranged in the first connecting end along the water flow direction, and a minimum diameter opening is formed at the top of the at least one stage of diameter-reducing conical part;

a water outlet pipe member having a second connection end and a water outlet end, the second connection end being provided with a second engagement portion, the first engagement portion and the second engagement portion being engaged with each other in an assembled state of the water inlet pipe member and the water outlet pipe member, a first axial gap being formed between the first engagement portion and the second engagement portion and a second radial gap being formed between surfaces of the first connection end and the second connection end abutting against each other, the first axial gap and the second radial gap being communicated with each other to form an air intake passage, an outlet of the air intake passage being close to the minimum diameter opening so that when water flows through the minimum diameter opening, a negative pressure is formed near the outlet of the air intake passage and thus external air is sucked into the water outlet pipe member to be mixed with the water to generate bubble water; and

a bubbler secured to the outlet end of the outlet tube member and having a mesh structure configured to form micro-bubble water as the bubble water flows therethrough.

2. The microbubble showerhead of claim 1, wherein the at least one stage of the tapered portion with a smaller diameter includes a first stage tapered portion with a smallest diameter equal to a largest diameter of the second stage tapered portion and a second stage tapered portion with a smaller diameter opening formed at a top of the second stage tapered portion.

3. The microbubble showerhead of claim 1, wherein the microbubble showerhead has an insertion portion that extends from the top toward inside the outlet pipe member around the minimum diameter opening.

4. The microbubble showerhead of any of claims 1-3, wherein the first engagement portion is an internally threaded bore wall disposed within the first connection end, and the second engagement portion is an externally threaded cylindrical surface disposed on the second connection end; or, the first engagement portion is an external cylindrical surface disposed on the first connection end, and the second engagement portion is an internal bore wall disposed within the second connection end; the first axial gap is formed between the internally threaded bore wall and the externally threaded cylindrical surface.

5. The microbubble showerhead of any of claims 1 to 3, wherein the first engagement portion is a smooth bore wall provided in the first connection end, the second engagement portion is a non-smooth cylindrical surface provided on the second connection end, the non-smooth cylindrical surface having a plurality of ribs or grooves provided thereon, and the first axial gap is formed between the smooth bore wall and the non-smooth cylindrical surface.

6. The microbubble showerhead of any of claims 1-3, wherein the first land is a non-smooth bore wall disposed within the first connection end, the non-smooth bore wall having a plurality of ridges or grooves disposed thereon, the second land is a smooth cylindrical surface disposed on the second connection end, and the first axial gap is formed between the non-smooth bore wall and the smooth cylindrical surface.

7. The microbubble showerhead of any of claims 1 to 3, wherein the first land is a non-smooth bore wall provided in the first connection end, the non-smooth bore wall having a plurality of ribs and/or grooves provided thereon, the second land is a non-smooth cylindrical surface provided on the second connection end, the non-smooth cylindrical surface having a plurality of ribs and/or grooves provided thereon, the first axial gap being formed between the non-smooth bore wall and the non-smooth cylindrical surface.

8. The microbubble showerhead of any of claims 1 to 3, wherein the mesh structure comprises a plastic fence, a metal mesh, or a mesh of a polymer material.

9. The microbubble showerhead of any of claims 1 to 3, wherein the pore network structure has a pore diameter in a range of 0 to 1000 microns.

10. A scrubbing apparatus, comprising a microbubble spray head according to any of claims 1 to 9, the microbubble spray head being configured to generate microbubble water within the scrubbing apparatus.

Images