CN211368092U

CN211368092U - Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle

Info

Publication number: CN211368092U
Application number: CN201921870308.6U
Authority: CN
Inventors: 赵志强; 许升
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-28
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a microbubble shower nozzle and have washing equipment of this microbubble shower nozzle. The micro-bubble spray head comprises an integrated spray pipe and a bubbler, wherein at least one stage of diameter-reducing conical part is arranged in the integrated spray pipe along the water flow direction, a spray hole is formed at the top of the downstream end of the at least one stage of diameter-reducing conical part, and the spray hole is configured to generate negative pressure in the integrated spray pipe after the water flow flowing through the at least one stage of diameter-reducing conical part is sprayed out from the spray hole; a turbulent flow part is arranged on the inner wall of the tapered part with the diameter reduced by at least one stage; the pipe wall of the integrated spray pipe is provided with at least one air inlet, and the at least one air inlet is positioned close to the spray hole so that air is sucked into the integrated spray pipe through the at least one air inlet under the action of negative pressure and is mixed with water flow to generate bubble water; and a bubbler secured to the outlet end of the integrated spout and configured to form micro-bubble water as the bubble water flows therethrough. The micro-bubble nozzle has good performance of generating micro-bubbles and low manufacturing cost.

Description

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

Technical Field

The utility model relates to a microbubble produces the device, specifically relates to microbubble shower nozzle and have the washing equipment of this microbubble shower nozzle.

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. In this process, the rise speed of the bubbles becomes slow because they become small, resulting in high melting efficiency. 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 contraction process of the microbubbles is accompanied by an increase in negative charge, and the peak state of the negative charge is usually when the diameter of the microbubbles is 1 to 30 μm, so that positively charged foreign substances floating in the liquid are easily adsorbed. The result is that 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 enter 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 at the inside high-speed rotatory rivers that form of 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 air from the air inlet and 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 pipe 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 flows through the pressurizing pipe and is pressurized to form high-speed water flow, the high-speed water flow flows out of the water outlet of the pressurizing pipe and 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 through the negative pressure, the air and the water are mixed to form bubble water, the bubble water flows to the mesh from the expansion guide portion, 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.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, that is, to solve the technical problems of complex structure and high manufacturing cost of the existing micro-bubble generator, the present invention provides a micro-bubble nozzle, which comprises an integrated nozzle and a bubbler, wherein at least one stage of diameter-decreasing conical portion is arranged in the integrated nozzle along the water flow direction, a nozzle hole is formed at the top of the downstream end of the at least one stage of diameter-decreasing conical portion, and the nozzle hole is configured to generate negative pressure in the integrated nozzle after the water flow flowing through the at least one stage of diameter-decreasing conical portion is ejected from the nozzle hole; a turbulent flow part is arranged on the inner wall of the tapered part with the diameter reduced by at least one stage; at least one air inlet hole is formed in the pipe wall of the integrated spray pipe and is positioned close to the spray hole, so that air is sucked into the integrated spray pipe through the at least one air inlet hole under the action of the negative pressure and is mixed with the water flow to generate bubble water; and the bubbler is secured to the outlet end of the integrated spout and is configured to form micro-bubble water as the bubble water flows therethrough.

In the preferable technical scheme of the micro-bubble nozzle, the turbulent flow part is positioned on the inner wall of the most downstream one-stage diameter-reducing conical part of the at least one-stage diameter-reducing conical part.

In the preferred technical scheme of above-mentioned microbubble shower nozzle, vortex portion sets up at least one radial protruding portion or along on the inner wall of at least one stage diameter tapered portion at least one vortex muscle that the inner wall longitudinal extension of at least one stage diameter tapered portion.

In a preferred technical solution of the above micro bubble spray head, the at least one air inlet hole includes a plurality of air inlet holes arranged along a circumferential direction of a tube wall of the integrated spray tube.

In a preferred embodiment of the micro bubble spray head, the bubbler includes a mesh and a mesh skeleton, and the mesh is attached to the outlet end of the integrated nozzle through the mesh skeleton.

In a preferred technical solution of the micro-bubble showerhead, the mesh skeleton is provided with at least one overflow hole, and the at least one overflow hole is positioned close to the mesh.

In a preferable embodiment of the micro-bubble showerhead, the mesh has at least one fine hole having a diameter of a micrometer.

In a preferred embodiment of the microbubble sprayer, the mesh comprises a plastic fence, a metal mesh, or a polymer mesh.

In the preferred technical scheme of above-mentioned microbubble shower nozzle, the bubbler still includes the clamping ring, the clamping ring configuration becomes to be located the mesh skeleton with in order to fix between the exit end of integral type spray tube the mesh.

As can be appreciated by those skilled in the art, in the technical solution of the present invention, the micro bubble spraying head includes an integrated spraying pipe and a bubbler installed at an outlet end of the integrated spraying pipe. At least one stage of diameter-reducing conical part and a turbulence part arranged on the inner wall of the at least one stage of diameter-reducing conical part are arranged in the integrated spray pipe along the water flow direction, the water flow is accelerated in the at least one stage of diameter-reducing conical part, and the turbulence part increases the turbulence of the water; the accelerated water flow is expanded from the orifice into a downstream channel within the integral spout and creates a negative pressure within the downstream channel. At least one air inlet is arranged on the pipe wall of the integrated spray pipe, and under the action of negative pressure, a large amount of air is sucked into the integrated spray pipe from the outside through the air inlets and is mixed with water to generate bubble water containing a large amount of bubbles. The bubble water then flows through a bubbler located at the outlet end of the integrated spout to be cut and mixed by the bubbler, thereby generating micro-bubble water containing a large amount of micro-bubbles. The utility model discloses among the technical scheme of microbubble shower nozzle, the function that produces the microbubble is realized through the at least one-level diameter tapered part that diminishes of design in the integral type spray tube, the vortex portion that is located on the inner wall of this at least one-level diameter tapered part that diminishes and the bubbler of fixing the exit end at the integral type spray tube. Therefore, compare with the microbubble generator that has many parts of prior art, the utility model discloses the microbubble shower nozzle not only has good performance of producing the microbubble, and this microbubble shower nozzle's part quantity significantly reduces moreover, has also consequently saved the demand of connecting structure between design and the manufacturing part for the manufacturing cost of whole microbubble shower nozzle reduces remarkably.

Preferably, the spoiler is positioned on an inner wall of a most downstream one of the at least one stage of the tapered portion with a reduced diameter. The spoiler can be at least one radial protrusion arranged on the inner wall of the at least one-stage diameter tapered portion or at least one spoiler rib longitudinally extending along the inner wall of the at least one-stage diameter tapered portion. These turbulators can help the water flow mix the air being drawn more efficiently downstream by increasing the turbulence of the water.

Preferably, the bubbler comprises a mesh and a mesh skeleton through which the mesh is attached to the outlet end of the integrated spout. At least one overflow aperture is configured on the mesh skeleton, the at least one overflow aperture being positioned proximate to the mesh. The overflow hole can prevent redundant water from submerging the air inlet hole, so that the situation that air cannot be sucked into the integrated spray pipe due to the blockage of the air inlet hole and micro-bubble water cannot be generated is prevented.

The utility model also provides a washing equipment, washing equipment includes as above any kind of microbubble shower nozzle, the microbubble shower nozzle sets to produce little bubble water in the washing equipment. 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 structural view of an embodiment of a washing apparatus including a micro-bubble shower head according to the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of a washing apparatus including a micro-bubble spray head according to the present invention;

fig. 3 is a schematic perspective view of an embodiment of the micro bubble showerhead of the present invention;

fig. 4 is a top view of the embodiment of the micro bubble showerhead of the present invention shown in fig. 3;

fig. 5 is a front view of the embodiment of the micro bubble spray head of the present invention shown in fig. 3;

fig. 6 is a sectional view of an embodiment of the micro bubble showerhead of the present invention taken along section line a-a of fig. 5.

List of reference numerals:

1. a pulsator washing machine; 11. a box body; 12. a tray seat; 13; an upper cover; 14. a foot margin of the pulsator washing machine; 21. an outer tub; 31. an inner barrel; 311. a dewatering hole; 32. an impeller; 33. a transmission shaft of the pulsator washing machine; 34. a motor of the pulsator washing machine; 35. a balance ring; 41. a drain valve; 42. a drain pipe; 51. a water inlet valve; 52. a micro bubble spray head; 521. an integrated nozzle; 522. a bubbler; 211. an inlet end; 212. an outlet end; 213. a slip-off preventing part; 214A, a first fixed mounting portion; 214B, a second fixed mounting portion; 215. a positioning part; 216. an air inlet; 217. spraying a hole; 218. a spoiler portion; 219. at least one stage of tapered portion with a reduced diameter; 219A, a first-step diameter-reducing tapered portion; 219B, a second-step diameter-reducing tapered portion; 221. a mesh; 222, c; a mesh skeleton; 223. an overflow aperture; 224; a connection portion of the mesh; 225. pressing a ring; 226. pressing a ring hole; 300. an annular gap; 9. a drum washing machine; 91. a housing; 92. an outer cylinder; 93. an inner barrel; 931. a motor of the drum washing machine; 932. a transmission shaft of the drum washing machine; 933. a bearing; 94. a top deck plate; 95. a control panel; 96. an observation window; 97. a door body; 98. foot margin of drum type washing machine.

Detailed Description

Preferred embodiments of the present invention will be 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 and operated in a specific orientation, 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 meaning 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 complicated structure and high manufacturing cost of the existing micro-bubble generator, the utility model provides a micro-bubble spray head, which comprises an integrated spray pipe 521 and a bubbler 522 (see figures 3-6). At least one stage of the tapered portion 219 with a reduced diameter is provided in the integrated lance 521 along the water flow direction C. A nozzle hole 217 is formed at the tip of the downstream end of the at least one stage of the tapered portion 219 with a reduced diameter, and the water flowing through the at least one stage of the tapered portion 219 with a reduced diameter expands and is ejected from the nozzle hole to generate negative pressure in the integrated nozzle 521. A spoiler 218 is provided on an inner wall of the at least one-stage tapered portion 219. At least one air inlet hole 216 is formed on a pipe wall of the integrated nozzle 521, and the at least one air inlet hole 216 is positioned close to the nozzle 217, so that external air is sucked into the integrated nozzle 521 through the at least one air inlet hole 216 under the action of negative pressure and mixed with water flow to generate bubble water. A bubbler 522 is secured to the outlet end 212 of the integrated spout 521 and is configured to form micro-bubble water as the bubble water flows therethrough. Therefore, compare in prior art's microbubble generator, the utility model discloses the part quantity and the structure of microbubble shower nozzle are all simplified greatly to the manufacturing cost of microbubble shower nozzle also reduces by a wide margin, and the microbubble shower nozzle still keeps the performance of good production microbubble simultaneously. The "tapered portion with a reduced diameter" as referred to herein means a structure in which the diameter of the passage formed inside the portion is gradually reduced so that the passage is tapered.

The utility model discloses the microbubble shower nozzle can use in the washing field, the field of disinfecting, or other fields that need the microbubble. For example, the utility model discloses the microbubble shower nozzle can enough be used in the washing equipment, also can combine in devices such as bathroom tap or gondola water faucet.

Therefore, the utility model also provides a washing equipment, this washing equipment includes the utility model discloses a microbubble shower nozzle 52. The micro-bubble spray head 52 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, the health of a user is facilitated, and the user experience can be improved.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a washing apparatus with a micro bubble showerhead according to the present invention. In this embodiment, the washing apparatus is a pulsator washing machine 1. 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 1 (hereinafter, referred to as a washing machine) includes a cabinet 11. Feet 14 are provided at the bottom of the case 11. The upper part of the box body 11 is provided with a tray 12, and the tray 12 is pivotally connected with an upper cover 13. 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, fig. 2 is a schematic structural diagram of another embodiment of the washing apparatus with a micro-bubble spraying head according to the present invention. In this embodiment, the washing apparatus is a drum washing machine 9.

As shown in fig. 2, the drum washing machine 9 includes a housing 91 and a foot 98 at the bottom of the housing. An upper deck plate 94 is provided on the top of the housing 91. A door 97 for allowing a user to load laundry or the like into the drum washing machine is provided on a front side (an operation side facing the user) of the casing 91, and an observation window 96 for allowing the user to see the inside of the washing machine is provided on the door 97. A sealing window gasket 961 is further provided between the observation window 96 and the casing 91, and the sealing window gasket 961 is fixed to the casing 91. A control panel 95 of the drum washing machine 9 is disposed at an upper portion of the front side of the casing 91 to facilitate the operation of a user. An outer cylinder 92 and an inner cylinder 93 are disposed inside the outer shell 91. The inner cylinder 93 is positioned inside the outer cylinder 92. The inner drum 93 is connected to a motor 931 (e.g., a direct drive motor) via a drive shaft 932 and a bearing 933. A water inlet valve 51 is provided on an upper portion of the rear side of the housing 91, and the water inlet valve 51 is connected to the micro bubble jet head 52 through a water pipe. As shown in fig. 2, the microbubble head 52 is positioned near the upper front portion of the casing 91 and below the control panel 95. Similar to the above embodiment, water enters the micro bubble spray head 52 through a water pipe via 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 93 via the detergent box for laundry washing. Alternatively, the micro-bubble jet head 52 can directly jet micro-bubble water carrying a large amount of micro-bubbles into the outer tub 92 or the inner tub 93 of the washing machine to further reduce the amount of detergent and enhance the cleaning ability of the washing machine

Referring to fig. 3-6, fig. 3-6 are schematic diagrams of an embodiment of the micro bubble showerhead of the present invention, wherein fig. 3 is a schematic perspective view of an embodiment of the micro bubble showerhead of the present invention, fig. 4 is a top view of an embodiment of the micro bubble showerhead of the present invention shown in fig. 3, fig. 5 is a front view of an embodiment of the micro bubble showerhead of the present invention shown in fig. 3, and fig. 6 is a cross-sectional view of an embodiment of the micro bubble showerhead of the present invention taken along a section line a-a of fig. 5. As shown in fig. 3-6, in one or more embodiments, the microbubble spray head 52 of the present invention comprises an integrated spray bar 521. Mounted on the outlet end 212 of the integrated spout 521 is a bubbler 522, the bubbler 522 being configured to cut and mix bubble water as it flows therethrough to generate micro-bubble water containing a large number of micro-bubbles.

Referring to FIG. 3, in one or more embodiments, integrated lance 521 has an inlet end 211 and an outlet end 212. A bubbler 522 is secured to the outlet end 212 while the inlet end 211 is adapted for connection to an external water supply. Alternatively, a slip-off prevention portion 213, such as a slip-off prevention rib protruding radially outward around the outer wall of the inlet end 211 or an annular groove structure recessed inward from the outer wall of the inlet end 211, may be provided on the inlet end 211 to prevent the integrated nozzle from falling off from the pipe connected thereto for supplying water.

With continued reference to fig. 3, in one or more embodiments, a first fixed mount 214A, a second fixed mount 214B, and a positioning portion 215 are provided on the outer wall of the integrated nozzle 521 for positioning and fixing the microbubble head 52 at a predetermined position.

Referring to fig. 4 and 5, the first and second

fixed mounts

214A and 214B are symmetrically positioned on the outer wall of the integrated spout 521 and are located at the middle of the integrated spout 521. The positioning portion 215 is a long rib, radially outwardly protrudes from the outer wall of the integrated spout 521, and extends in the longitudinal direction of the integrated spout 521. The first and second fixing-mounting

portions

214A and 214B are distributed on both sides of the positioning portion 215. Alternatively, only one fixed mounting portion may be provided on the integrated nozzle 521, and the positioning portion 215 may take other suitable forms.

In one or more embodiments, the first and second fixing mounts 214A, 214B are screw hole structures to fix the spray head 52 to a target location with screws. 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. 6, in the integrated nozzle 521, a first-stage diameter-reducing tapered portion 219A and a second-stage diameter-reducing tapered portion 219B are provided along the water flow direction C. A nozzle hole 217 is formed at the downstream end top of the second-step diameter-reducing tapered portion 219B. The nozzle hole 217 communicates the inner passages of the first-stage and second-stage reduced-diameter tapered

portions

219A and 219B with the downstream passage of the integrated nozzle 521. In alternative one or more embodiments, at least one step of the tapered diameter portion 219 may be a tapered diameter portion having one step, or may be a tapered diameter portion having more than two steps. The nozzle hole 217 is always formed at the top of the most downstream one-step diameter-decreasing tapered portion in the water flow direction C.

With continued reference to fig. 6, a spoiler 218 is formed on the inner wall of the second-step diameter-reducing tapered portion 219B. In one or more embodiments, turbulator 218 is at least one turbulator, such as a plurality of turbulators, that extends longitudinally along an inner wall of the stage of reduced diameter tapers. In an alternative embodiment, turbulator 218 may be at least one radial protrusion, such as one or more cylindrical protrusions, on the inner wall of the stepped reduced diameter taper. In alternative embodiments, the spoiler 218 may also be formed on the first step tapered portion 219B, or each step tapered portion may be formed with a spoiler.

As shown in fig. 6, the outer wall of the second-stage diameter-reducing tapered portion 219B is separated from the inner wall of the integrated nozzle, so that an annular gap 300 is formed between the outer wall of the second-stage diameter-reducing tapered portion 219B and the inner wall of the integrated nozzle 521. The annular gap 300 facilitates the mixing of the air with the water flow, thereby generating more micro-bubbles.

As shown in FIG. 6, two rows of a plurality of air intake holes 216 arranged in a ring shape are formed on the outer wall of the integrated nozzle 521. These intake holes 216 are positioned close to the orifice 217. The water flow entering from the inlet end 211 first passes through the first and second

tapered portions

219A, 219B with decreasing diameters to accelerate the water flow, while the turbulent portion 218 increases the turbulence of the water flow; the accelerated water flow is expanded from the orifice 217 to be injected into the downstream channel of the integrated spout 521 and a negative pressure is generated therein; under the action of the negative pressure, a large amount of outside air is sucked from the intake holes 216 into the integrated spout 521 in the direction E and mixed with the water flow therein to generate bubble water. In alternative embodiments, more or fewer air inlet holes may be provided, as desired, and may be arranged in other ways, such as in a staggered manner.

With continued reference to fig. 3-6, the bubbler 522 includes a mesh 221 and a mesh skeleton 222. Mesh 221 is attached to outlet end 212 of integrated nozzle 521 through mesh skeleton 222.

In one or more embodiments, the mesh 221 has at least one pore with a diameter on the order of micrometers. Preferably, the diameter of the fine pores is between 0 and 1000 microns; more preferably, the diameter of the fine pores is between 5 and 500 μm. The mesh 221 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 mesh 221 may be other mesh structures capable of generating micro bubbles, for example, a mesh structure composed of two non-micron-sized honeycomb structures. As the bubble water flows through the mesh 221, the mesh 221 acts to mix and cut the bubble water, thereby producing micro-bubble water.

Referring to fig. 6, the mesh cage 222 is cylindrical so as to be able to fit over the outlet end 212 of the integrated lance 521. In one or more embodiments, internal threads are provided on the inner wall of the mesh skeleton 222 to engage external threads on the outer wall of the outlet end 212. Alternatively, a set gap may be reserved between the engaged external and internal threads to allow air to be drawn into the integral nozzle tube through the gap. In alternative embodiments, the mesh skeleton 222 may be connected to the outlet end of the integrated nozzle 521 by other connection means, such as welding.

In one or more embodiments, as shown in fig. 6, the mesh skeleton 222 is provided with a plurality of overflow holes 223 along its periphery, and these overflow holes are positioned adjacent to the mesh 221. When the bubble water cannot pass through the mesh 221 in time, the excessive bubble water can flow out of the overflow holes 223, so that the excessive water can be prevented from flowing back to submerge the air inlet holes 216. Therefore, the overflow hole 223 can prevent the situation that the air cannot be sucked into the integrated nozzle due to the blocked air inlet hole, and therefore the micro bubble water cannot be generated. In alternative embodiments, more or fewer overflow apertures 223 may be provided, as desired.

With further reference to FIG. 6, in one or more embodiments, a compression ring 225 is also disposed between the mesh skeleton 222 and the outlet end 212 of the integrated lance 521. Accordingly, the mesh 221 is provided with a connection portion 224 on the periphery thereof. The press ring 225 presses the connection portion 224 against the inner wall of the end portion of the mesh frame 222, so that the mesh 221 can be firmly fixed, and the mesh 221 is not detached from the outlet end 212 of the integrated nozzle 521 when subjected to the impact of the high-pressure water flow. In one or more embodiments, the pressure ring 225 also includes a plurality of pressure ring apertures 226 that communicate with the overflow aperture 223 to drain excess water.

So far, the technical solution of the present invention has been described with reference to 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 deviating from the principle of the present invention, a person skilled in the art may combine technical features from different embodiments, and may make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A micro-bubble spray head is characterized by comprising an integrated spray pipe and a bubbler,

at least one stage of diameter-reducing conical part is arranged in the integrated spray pipe along the water flow direction, a spray hole is formed at the top of the downstream end of the at least one stage of diameter-reducing conical part, and the spray hole is configured to generate negative pressure in the integrated spray pipe after the water flow passing through the at least one stage of diameter-reducing conical part is sprayed out of the spray hole;

a turbulent flow part is arranged on the inner wall of the tapered part with the diameter reduced by at least one stage;

at least one air inlet hole is formed in the pipe wall of the integrated spray pipe and is positioned close to the spray hole, so that air is sucked into the integrated spray pipe through the at least one air inlet hole under the action of the negative pressure and is mixed with the water flow to generate bubble water; and

the bubbler is secured to the outlet end of the integrated spout and is configured to form micro-bubble water as the bubble water flows therethrough.

2. The microbubble showerhead of claim 1, wherein the turbulator is positioned on an inner wall of a most downstream one of the at least one stage of reduced diameter tapers.

3. The microbubble showerhead of claim 1 or 2, wherein the turbulator is at least one radial protrusion provided on an inner wall of the at least one stage of the tapered portion or at least one turbulator rib extending longitudinally along the inner wall of the at least one stage of the tapered portion.

4. The microbubble showerhead of claim 1, wherein the at least one gas inlet comprises a plurality of gas inlets arranged along a circumference of a tube wall of the integrated nozzle.

5. The microbubble showerhead of claim 1, wherein the bubbler comprises a mesh and a mesh skeleton, the mesh being attached to the outlet end of the integrated nozzle through the mesh skeleton.

6. The microbubble showerhead of claim 5, wherein the mesh skeleton is configured with at least one overflow aperture positioned proximate to the mesh.

7. The micro bubble showerhead of claim 5, wherein the mesh has at least one fine hole having a diameter of a micrometer scale.

8. The microbubble showerhead of claim 7, wherein the mesh comprises a plastic fence, a metal mesh, or a mesh of a polymer material.

9. The microbubble showerhead of claim 5 wherein the bubbler further comprises a compression ring configured to be positioned between the mesh skeleton and the outlet end of the integrated sparger to secure the mesh.

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.