CN212357699U

CN212357699U - Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle

Info

Publication number: CN212357699U
Application number: CN201922039603.3U
Authority: CN
Inventors: 赵志强; 许升
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-01-15
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to a microbubble shower nozzle and have washing equipment of this microbubble shower nozzle. The microbubble nozzle comprises an integrated nozzle and a microbubble bubbler fixed on the outlet end of the integrated nozzle, a variable-diameter channel part is arranged in the integrated nozzle, a plurality of variable-diameter channels which are parallel to each other are formed in the variable-diameter channel part along the water flow direction, each variable-diameter channel sequentially comprises a diameter-reducing conical channel and a diameter-increasing conical channel along the water flow direction, and water flow which can be pressurized by the diameter-reducing conical channel can expand in the diameter-increasing conical channel so as to generate negative pressure near the outlet of the variable-diameter channel; still be equipped with inlet channel on the integral type spray tube, inlet channel fixes a position to be close to the export for air can be followed inlet channel and inhaled and mixed with the rivers and produce bubble water under the negative pressure, and bubble water forms little bubble water through little bubble ware formation bubble. The micro-bubble nozzle not only has good performance of generating micro-bubbles, but also has greatly reduced number of components.

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 also accompanied by an increase in negative charge, which is generally in a high-peak state when the diameter of the microbubbles is 1 to 30 μm, and thus easily adsorbs positively charged foreign substances floating in the liquid. 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 post 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. Water flow flows through the vortex column to form high-speed rotating water flow inside the vortex column shell, the high-speed rotating water flow flows out of the outlet of the vortex column shell and then enters the funnel-shaped space surrounded by the protruding part, and air is sucked from the air inlet and is absorbed by negative pressure formed around the water flow

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, the size of which increases in 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: the device comprises a shell, a water inlet pipe, a vortex column, a volute or a pressurizing pipe, a gas-liquid mixing pipe or a bubble generation 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. 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 complicated 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 micro bubble bubbler fixed on the outlet end of the integrated nozzle, wherein a variable diameter channel part is arranged in the integrated nozzle, a plurality of variable diameter channels parallel to each other are formed in the variable diameter channel part along the water flow direction, each variable diameter channel sequentially comprises a tapered channel with a reduced diameter and a tapered channel with an increased diameter along the water flow direction, and the water flow pressurized by the tapered channel with the reduced diameter can expand in the tapered channel with the increased diameter so as to generate negative pressure near the outlet of the tapered channel with the increased diameter; an air intake passage is also provided on the integral nozzle, the air intake passage being positioned proximate to the outlet such that air can be drawn from the air intake passage under the negative pressure and mixed with the plurality of water streams from the plurality of variable diameter passages to produce bubble water, the bubble water forming micro-bubble water through the micro-bubble bubbler.

In the preferable technical scheme of the micro-bubble spray head, the diameter-variable channel part and the integrated spray pipe are integrally formed.

In an embodiment of the micro bubble nozzle, the variable diameter passage is formed independently of the integrated nozzle.

In a preferred embodiment of the micro-bubble showerhead, the plurality of variable diameter passages are uniformly distributed in a ring shape around the center of the integrated nozzle.

In a preferred technical solution of the above micro bubble nozzle, the air inlet channel is a plurality of air inlets provided on a tube wall of the integrated nozzle, or the air inlet channel is formed between the outlet end and the micro bubble bubbler.

In a preferred technical solution of the above-mentioned microbubble sprayer, the microbubble 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 microbubble nozzle, at least one overflow hole is configured on the mesh skeleton, and the at least one overflow hole is positioned close to the mesh.

In the preferred technical scheme of above-mentioned microbubble shower nozzle, the microbubble 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.

In the preferable technical scheme of the micro-bubble spray head, a plurality of pressure ring holes are formed in the pressure ring along the circumferential direction.

It can be understood by those skilled in the art that, in the technical solution of the present invention, the microbubble nozzle includes an integrated nozzle and a microbubble bubbler installed at an outlet end of the integrated nozzle. The variable-diameter spray pipe is characterized in that a variable-diameter channel part is arranged in the integrated spray pipe, a plurality of variable-diameter channels which are parallel to each other are formed in the variable-diameter channel part along the water flow direction, and each variable-diameter channel sequentially comprises a diameter-reducing conical channel and a diameter-increasing conical channel along the water flow direction. The water flow in the tapered passage with the reduced diameter can be pressurized (also accelerated), and the pressurized water flow enters the tapered passage with the increased diameter and can be rapidly expanded, so that negative pressure is generated near the outlet of the tapered passage. Thus, the variable diameter passages form a plurality of venturi structures. An air inlet channel is also arranged on the integrated spray pipe and is positioned close to the outlet of the variable-diameter channel, so that under the action of negative pressure, a large amount of air is sucked into the integrated spray pipe from the outside through the air inlet channel and is mixed with a plurality of water flows from the variable-diameter channels to generate bubble water containing a large amount of bubbles. The bubble water then flows through the microbubble bubbler at the outlet end of the integrated nozzle to be cut and mixed by the microbubble bubbler, thereby generating microbubble water containing a large amount of microbubbles. The utility model discloses among the technical scheme of microbubble shower nozzle, through the inlet channel that has on the variable diameter passageway portion, the integral type spray tube of a plurality of variable diameter passageways of design in the integral type spray tube and fix the microbubble bubbler at the exit end of integral type spray tube and realize producing the function of little bubble water. Therefore, compare with the microbubble generator that has many parts of prior art, the utility model discloses the microbubble shower nozzle not only has the 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 plurality of variable diameter passages are evenly distributed in an annular form around the center of the integrated spout. This uniform annular distribution facilitates greater air intake and gas-liquid premixing with the multiple water streams.

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

Preferably, the microbubble bubbler further comprises a pressure ring configured to be located between the mesh skeleton and the outlet end of the integrated nozzle to fix the mesh, and a pressure ring hole is circumferentially provided on the pressure ring. On the one hand, when the flow rate of the water jet is not large, air can be sucked in through the pressure ring holes and mixed with water for generating micro-bubble water; on the other hand, if the ejection flow is too large, some water can overflow from these ring holes. The overflow can not only help clean the mesh surface and take away the dirt, thereby prolonging the service life of the mesh, but also can prevent the phenomenon that the air can not be sucked and then the micro-bubble water can not be generated due to the fact that the air inlet channel is blocked by redundant water.

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 microbubble water in the washing equipment. The micro-bubble spray head generates micro-bubble water containing a large amount of micro-bubbles in the washing equipment, so that not only the washing capacity of the washing equipment can be improved, but also the amount of the detergent used can be reduced and the residual amount of the detergent in the clothes 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 showerhead 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 left side view of the embodiment of the micro bubble nozzle of the present invention shown in fig. 3

Fig. 6 is a front view of the embodiment of the micro bubble spray head of the present invention shown in fig. 3;

fig. 7 is a sectional view of an embodiment of the microbubble showerhead of the present invention taken along the section line a-a of fig. 6;

fig. 8 is a sectional view of another embodiment of the microbubble showerhead of the present invention taken along the section line a-a of fig. 6.

List of reference numerals:

1. a pulsator washing machine; 11. a box body; 12. a tray seat; 13; an upper cover; 14. the foot margin of the impeller 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 water discharge pipe; 51. a water inlet valve; 52. a micro bubble spray head; 521. an integrated nozzle; 522. a microbubble 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; 216', a threaded air inlet passage; 217. A variable diameter passage portion; 218. a variable diameter channel; 218a, tapered passages of decreasing diameter; 218b, a smallest diameter passage; 218c, tapered passages of increasing diameter; 218d, an outlet of the variable diameter passage; 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. a threaded connection; 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 for example be 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 complex structure and high manufacturing cost of the existing micro-bubble generator, the utility model provides a micro-bubble nozzle 52. The microbubble head 52 includes an integrated nozzle 521 and a microbubble bubbler 522 (see fig. 3 to 8) fixed to the outlet end 212 of the integrated nozzle 521. A variable diameter passage portion 217 is provided in the integrated nozzle 521. A plurality of diameter-variable passages 218 are formed in parallel with each other in the water flow direction C in the diameter-variable passage portion 217, and each of the diameter-variable passages 218 includes a diameter-decreasing tapered passage 218a and a diameter-increasing tapered passage 218C in this order in the water flow direction C. The water flow, which may be pressurized (and simultaneously accelerated) by the smaller diameter tapered passage 218a, is able to expand within the larger diameter tapered passage 218c to create a negative pressure near the outlet 218d of the variable diameter passage 218. Also provided on the integrated nozzle 521 is an air intake channel positioned proximate to the outlet 218d such that air can be drawn from the air intake channel under negative pressure and mixed with the multiple water streams from the plurality of variable diameter channels 218 to produce bubble water that is formed into micro-bubble water by the micro-bubble bubbler 522. 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.

Reference herein to "variable diameter passages" is to the variation in the dimension (e.g. diameter) of each passage transverse to the direction of water flow C.

The utility model discloses the microbubble shower nozzle can use in the washing field, the field of disinfecting, perhaps 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 microbubble head 52 is provided to generate microbubble water within the washing 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 box body 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 tub 31 is provided in the outer tub 21, a pulsator 32 is provided at the bottom of the inner tub 31, a motor 34 is fixed to the lower portion of the outer tub 21, the motor 34 is drivingly connected to the pulsator 32 through a driving shaft 33, and dewatering holes 311 through which washing water or water from laundry can flow out of the inner tub 31 and enter the outer tub 21 are provided in the sidewall of the inner tub 31. 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 interior 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. An inlet valve 51 is provided on an upper portion of the rear side of the housing 91, and the 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 may also directly spray 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 nozzle of the present invention, wherein fig. 3 is a schematic perspective view of an embodiment of the micro bubble nozzle of the present invention, fig. 4 is a top view of an embodiment of the micro bubble nozzle of the present invention shown in fig. 3, fig. 5 is a left side view of an embodiment of the micro bubble nozzle of the present invention shown in fig. 3, and fig. 6 is a front view of an embodiment of the micro bubble nozzle of the present invention shown in fig. 3. As shown in fig. 3-6, in one or more embodiments, the present micro-bubble jet head 52 includes an integral jet pipe 521. A micro bubble bubbler 522 is fixed to the outlet end 212 of the integrated nozzle 521, and the micro bubble bubbler 522 is configured to cut and mix bubble water while the bubble water flows therethrough to generate micro bubble water containing a large amount 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 microbubble bubbler 522 is fixed to the outlet end 212, while the inlet end 211 is used for connection to an external water source. Alternatively, a slip prevention part 213, such as a slip 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 521 from falling off from the pipe to which the water supply is connected.

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 to 6, the first and second

fixed mounts

214A and 214B are symmetrically positioned on the outer wall of the integrated spout 521 and at the middle of the integrated spout 521. The positioning portion 215 is an elongated rib, protrudes radially outward from the outer wall of the integrated nozzle 521, and extends in the longitudinal direction of the integrated nozzle 521. The first and second fixed 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 spout 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.

Fig. 7 is a sectional view of an embodiment of the microbubble showerhead of the present invention taken along a section line a-a of fig. 6. As shown in fig. 7, a variable diameter passage portion 217 is provided in the integrated nozzle 521 along the water flow direction C. In one or more embodiments, variable diameter channel portion 217 is integrally formed with integral spout 521, such as by integral injection molding. In an alternative embodiment, variable diameter channel portion 217 is formed separately from integral spout 521, then inserted into integral spout 521, and snapped into integral spout 521. Alternatively, a separately formed throttle channel portion 217 can also be press-fit in the integrated spout 521.

Referring to fig. 7, a plurality of variable diameter passages 218 are provided in the variable diameter passage portion 217. In one or more embodiments, the number of variable diameter passages 218 is 2-16, which are evenly distributed in an annular fashion about the centerline of the integral nozzle 521. Alternatively, the number of variable diameter passages 218 may be 6-9. Alternatively, the variable diameter passages may be arranged in a pattern other than a ring pattern, and may not be evenly distributed. In one or more embodiments, the configuration of all of the variable diameter channels 218 is the same. Alternatively, the variable diameter passages 218 may take different configurations, such as a diameter (and thus cross-section) of the variable diameter passage 218 near the center of the integrated spout 521 that is larger than a diameter (and thus cross-section) of the variable diameter passage 218 away from the center of the integrated spout 521 at the same radial position perpendicular to the water flow direction C.

With continued reference to FIG. 7, each of the variable diameter passages 218 includes a reduced diameter tapered passage 218a and an increased diameter tapered passage 218 c. In the water flow direction C, the downstream minimum diameter end of the reduced diameter tapered passage 218a coincides with the upstream minimum diameter end of the increased diameter tapered passage 218C, thus forming a minimum diameter passage 218 b. The water flowing in from the inlet end 211 of the integrated nozzle 521 enters the tapered passageway 218a of each variable diameter passageway 218 and is pressurized therein, and then enters the tapered passageway 218c of increased diameter after passing through the passageway 218b of minimum diameter. In the tapered passage 218c with the increased diameter, the water flow is rapidly expanded, and therefore, when the expanded water flow is ejected from the outlet 218d of the tapered passage 218c with the increased diameter (also the outlet 2 of the tapered passage 218), a negative pressure region is generated in the vicinity of the outlet 218 d.

As shown in fig. 7, a plurality of intake holes 216 as intake passages are formed on an outer wall of the integrated nozzle 521. The intake holes 216 are arranged in two rings around the outer wall of the integrated nozzle 521, and the intake holes 216 are positioned close to the outlet 218d of the variable diameter passage 218, and thus in the negative pressure region. Under the negative pressure, a large amount of external air can be sucked into the integrated spout 521 from the air intake holes 216 and mixed with the multiple water streams ejected from the multiple variable diameter passages 218 to generate bubble water. The bubble water then flows to the downstream microbubble bubbler 522 to form microbubble 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 arrangement.

The microbubble bubbler 522 located on the outlet end 212 of the integrated nozzle 521 includes the mesh 221 and the 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 microns. 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 a plastic fence is formed by first making a polymer material into a plate and then machining the plate to generate a micropore 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. 7, 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, the mesh skeleton 222 and the outlet end 212 of the integrated nozzle are secured together by a threaded connection 300. For example, an internal thread is formed on the inner wall of the mesh skeleton 222, and an external thread is formed on the outer wall of the outlet end 212, the internal thread being engaged with the external thread. In alternative embodiments, the mesh skeleton 222 may take other suitable forms, such as a platen, and be connected to the outlet end of the integrated nozzle 521 by other means of connection, such as welding. Alternatively, the mesh may also be formed directly on the outlet end 212 of the integrated nozzle.

As shown in fig. 3-7, in one or more embodiments, 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 hole 223, so that the excessive water can be prevented from flowing back to submerge the air inlet hole 216. Therefore, the overflow hole 223 can prevent the air from being sucked into the integrated nozzle due to the blockage of the air inlet hole 216, so that the micro bubble water can not be generated. In alternative embodiments, more or fewer overflow apertures 223 may be provided, as desired.

With continued reference to FIG. 7, in one or more embodiments, a compression ring 225 is also disposed between mesh skeleton 222 and outlet end 212 of integral nozzle 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 alternative embodiments, the mesh 221 may be secured by other means, such as by a snap spring. In one or more embodiments, the pressure ring 225 also includes a plurality of pressure ring apertures 226. These press ring holes 226 can be used to draw air into and mix with the water stream in the event that the water jet flow is not large. At relatively high water jet flow rates, some of the water is allowed to escape from the pressure ring holes 226, thereby not only helping to clean the mesh, but also preventing excess water from flowing back through the intake passages and preventing air from being drawn through them.

Fig. 8 is a sectional view of another embodiment of the microbubble showerhead of the present invention taken along the section line a-a of fig. 6. As shown in fig. 8, in this embodiment, the variable diameter channel portion 217 is formed by injection molding independently of the one-piece spout 521. Additionally, in this embodiment, the mesh cage 222 and the outlet end 212 of the integrated nozzle are also secured together by a threaded connection 300, and a threaded inlet passage 216' is formed in the threaded connection 300, such as a gap formed between an external thread and an internal thread. Thus, in this embodiment, the air intake passage includes not only the air intake holes 216 on the outer wall of the integrated nozzle 521, but also the threaded air intake passage 216'. In an alternative embodiment, the air inlet passage of the spray head 52 may include only an air inlet passage disposed between the outlet end of the integrated nozzle 521 and the microbubble bubbler.

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 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 micro-bubble bubbler fixed on the outlet end of the integrated spray pipe,

a variable diameter channel part is arranged in the integrated spray pipe, a plurality of variable diameter channels which are parallel to each other are formed in the variable diameter channel part along the water flow direction, each variable diameter channel sequentially comprises a diameter-reducing conical channel and a diameter-increasing conical channel along the water flow direction, and the water flow which can be pressurized by the diameter-reducing conical channel can expand in the diameter-increasing conical channel so as to generate negative pressure near an outlet of the variable diameter channel;

an air intake passage is also provided on the integral nozzle, the air intake passage being positioned proximate to the outlet such that air can be drawn from the air intake passage under the negative pressure and mixed with the multiple water streams from the plurality of variable diameter passages to produce bubble water, the bubble water forming micro-bubble water through the micro-bubble bubbler.

2. The microbubble showerhead of claim 1, wherein the variable diameter passage portion is integrally formed with the integrated nozzle.

3. The microbubble showerhead of claim 1, wherein the variable diameter passage portion is molded separately from the integrated nozzle.

4. The microbubble showerhead of claim 1, wherein the plurality of variable diameter passages are evenly distributed in a ring-like fashion around a center of the integrated nozzle.

5. The microbubble showerhead of any of claims 1 to 4, wherein the air inlet passage is a plurality of air inlet holes provided on a tube wall of the integrated nozzle, or the air inlet passage is formed between the outlet end and the microbubble bubbler.

6. The microbubble showerhead of any of claims 1-4, wherein the microbubble bubbler comprises a mesh and a mesh skeleton, the mesh being attached to the outlet end of the integrated nozzle through the mesh skeleton.

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

8. The microbubble showerhead of claim 6, further comprising a compression ring configured to be positioned between the mesh skeleton and the outlet end of the integrated nozzle to secure the mesh.

9. The microbubble showerhead of claim 8, wherein a plurality of pressure ring holes are provided in the pressure ring in a circumferential direction.

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.