CN115198846A

CN115198846A - Water outlet device

Info

Publication number: CN115198846A
Application number: CN202211064952.0A
Authority: CN
Inventors: 林孝发; 林孝山; 陈志伟; 刘启乔; 邓小清; 梁泮生
Original assignee: Fujian Xihe Sanitary Ware Technology Co Ltd
Current assignee: Fujian Xihe Sanitary Ware Technology Co Ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-10-18

Abstract

The invention discloses a water outlet device, which comprises a water outlet device body; the water outlet device body is provided with a first channel, a water outlet cavity, a backflow cavity, a plurality of rotational flow cavities, an inclined water inlet channel and a first mixed water channel; the first channel is communicated with the air and is communicated with each first mixed water channel; a plurality of water outlets are arranged on the wall of the water outlet cavity; one end of the reflux cavity is communicated with the water outlet cavity, and the other end of the reflux cavity is communicated with the first channel; each inclined water inlet channel is correspondingly communicated with each rotational flow cavity, so that water entering each rotational flow cavity from each inclined water inlet channel rotates around a first axis parallel to the water outlet direction in each rotational flow cavity; each rotational flow cavity is correspondingly communicated with each first mixed water channel, and water flow flows out from each rotational flow cavity and each first mixed water channel in an accelerated manner; the first mixed water channels are communicated with the water outlet cavity, and the first mixed water channels are arranged around the backflow cavity. The water outlet device can generate micro-bubble water at normal temperature.

Description

Water outlet device

Technical Field

The invention relates to the field of water outlet devices, in particular to a water outlet device.

Background

In the existing water outlet device for generating micro-bubble water, the solubility of air in water is reduced by raising the temperature of water, and bubbles are separated out by expanding holes, so that the micro-bubble water is obtained. Therefore, the micro-bubble water can be generated only under the specific use condition capable of being heated, and is limited and inconvenient to use.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned drawbacks and problems of the related art and providing a water discharge device that generates micro-bubble water at normal temperature.

In order to achieve the purpose, the invention adopts the following technical scheme:

the first scheme comprises the following steps: a water outlet device comprises a water outlet device body; the water outlet device body is provided with a first channel, a water outlet cavity, a backflow cavity, a plurality of rotational flow cavities, an inclined water inlet channel and a first mixed water channel; the first channel is communicated with the air and each first mixed water channel; a plurality of water outlets are arranged on the wall of the water outlet cavity; one end of the backflow cavity is communicated with the water outlet cavity, and the other end of the backflow cavity is communicated with the first channel; each inclined water inlet channel is correspondingly communicated with each rotational flow cavity, so that water entering each rotational flow cavity from each inclined water inlet channel rotates around a first axis parallel to the water outlet direction in each rotational flow cavity; the rotational flow cavities are correspondingly communicated with the first mixed water channels, water flows flow out of the rotational flow cavities and the first mixed water channels in an accelerated mode, the water flows flowing from the rotational flow cavities to the first mixed water channels in an accelerated mode enable negative pressure to be formed in the first mixed water channels () and pass through the first channels (air is sucked into the first mixed water channels ()), the first mixed water channels are communicated with the water outlet cavities, and the first mixed water channels are arranged around the backflow cavities.

Scheme II: based on the first scheme, the water outlet device body further comprises a plurality of first water inlet channels and a plurality of second mixed water channels; the first channel is also communicated with each second mixed water channel; each first water inlet channel is correspondingly communicated with each second mixed water channel, water flow is accelerated to flow out of each first water inlet channel and each second mixed water channel, and the water flow accelerated from each first water inlet channel () to each second mixed water channel enables negative pressure to be formed in each second mixed water channel and air is sucked into each second mixed water channel through the first channel; each second mixed water channel is communicated with the water outlet cavity, each second mixed water channel and each first mixed water channel jointly form an annular array surrounding the backflow cavity, and each first mixed water channel is located on the innermost layer of the annular array.

And a third scheme is as follows: based on the first scheme, the water passing area of each rotational flow cavity and each first mixed water channel is reduced from large to small along the water outlet direction.

The scheme four is as follows: based on a second scheme, the water passing areas of the first water inlet channels and the second mixed water channels are decreased from large to small along the water outlet direction.

And a fifth scheme: based on the first scheme, the water outlet device body is further provided with a plurality of first protruding columns, each first protruding column is protruded on the end face of one end, communicated with the water outlet cavity, of the backflow cavity at intervals, and the interval between every two adjacent first protruding columns is communicated with the water outlet cavity and the backflow cavity.

And a sixth scheme: based on the first scheme, the cross section of the water flowing through the backflow cavity is circular or annular.

The scheme is seven: based on the second scheme, the water passing cross section of the first water inlet channel and/or the second mixed water channel is polygonal.

And a eighth scheme: based on the first scheme, the cyclone cavity is provided with a collecting section and a guiding section; the inclined water inlet channel is communicated with the collection section; the water passing area of the collection section is gradually reduced along the water outlet direction; the guide section is communicated with the collection section and the first mixed water channel, and the water outlet area of the guide section is equal to the minimum water outlet area of the collection section.

The scheme is nine: based on a second scheme, the maximum water passing area of the second mixed water channel is larger than the minimum water passing area of the first water inlet channel; the maximum water passing area of the first mixing water channel is larger than the minimum water passing area of the vortex cavity.

A tenth scheme: based on the second scheme, the water outlet device body is also provided with a water collecting cavity and a plurality of filtering holes;

the water collecting cavity is communicated with the first water inlet channel and the inclined water inlet channel; each filtering hole is communicated with the water collecting cavity

Scheme eleven: based on scheme two, the first passageway is the annular in cross-section, just the first passageway encircles the backward flow chamber setting, the lateral wall of water outlet device body is equipped with the induction port of intercommunication first passageway and air.

A twelfth scheme: based on the first scheme, the device also comprises a filter screen; the filter screen is arranged in the water outlet cavity and covers the water outlets.

Scheme thirteen: based on the twelfth scheme, at least two filter screens are arranged; each filter screen is overlapped layer by layer, and the mesh number of two adjacent filter screens is different.

A fourteen scheme: based on the eleventh scheme, the water outlet device body comprises a water outlet seat, a foaming piece, a jet spray piece and a filter piece; the water outlet base is provided with a first cavity with an opening at the top end; the water outlet is arranged on the water outlet seat and is communicated with the first cavity; one end of the foaming piece is positioned on the end surface of the top end of the water outlet seat to shield the opening at the top end of the first cavity and enclose with the water outlet seat to form the water outlet cavity; each first mixed water channel and each second mixed water channel are arranged on the foaming piece; the jet spray piece is located on the end face, away from the water outlet base, of the foaming piece and surrounds the foaming piece to form the first channel and the backflow cavity; each first water inlet channel is arranged on the jet flow spraying piece; the filtering piece is arranged at one end of the jet spray piece, which deviates from the foaming piece, and the filtering piece and the jet spray piece are enclosed to form the inclined water inlet channel, the rotational flow cavity and the water collecting cavity, and the filtering holes are formed in the filtering piece.

A fifteenth scheme: based on the fourteenth scheme, the foaming piece is provided with a first groove with an opening deviating from the water outlet seat; the side wall of the foaming piece forms a part of the side wall of the water outlet device body and is provided with a notch for communicating the first groove and air; the middle part of the foaming piece is also provided with a first through hole which is opened at the bottom of the first groove and is communicated with the water outlet cavity; the water inlet ends of the first mixed water channel and the second mixed water channel are communicated with the first groove; the jet spray piece comprises a jet spray piece body and a second convex column; the jet spray piece body is positioned on the end face, away from the water outlet base, of one end of the foaming piece, encloses with the groove wall of the first groove to form the first channel, and encloses with the side wall of the notch to form the air suction port; the second convex column is convexly arranged on one side of the jet spray piece body facing the foaming piece, extends into the first through hole and is enclosed with the hole wall of the first through hole to form the backflow cavity; the filtering piece is arranged at one end of the jet spray piece body, which deviates from the foaming piece, and the filtering piece and the jet spray piece body are enclosed to form the inclined water inlet channel, the rotational flow cavity and the water collecting cavity.

Sixthly, the scheme is as follows: based on the fifteenth scheme, a first water channel and a second water channel are arranged on the jet spray piece body; the extending direction of the first water channel is vertical to the water outlet direction of the second water channel; the two ends of the first water channel are respectively communicated with the water collecting cavity and the second water channel, and the first water channel is also provided with an opening facing the filtering piece; one end of the second water channel is provided with an opening facing the filtering piece, and the other end of the second water channel is communicated with the first mixed water channel; the filter piece shields the opening of the first water channel facing the filter piece and the inner wall of the first water channel to jointly enclose and close to form the inclined water inlet channel when being arranged on the jet spray piece, and the filter piece also shields the opening of the second water channel facing the filter piece and the inner wall of the second water channel to jointly enclose and close to form the vortex cavity.

As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:

1. water entering the water outlet device body enters the corresponding rotational flow cavity through each inclined water inlet channel and then enters the water outlet cavity from the first mixed water channel.

And after the water flow enters the corresponding rotational flow cavity through each inclined water inlet channel, a vortex rotating around the first axis is formed. The vortex flow accelerates out of each vortex chamber. After the accelerated vortex flows into the corresponding first mixed water channels, negative pressure is generated in each first mixed water channel, air is sucked into each first mixed water channel through the first channel and is mixed with water flow to form bubble water, and then the bubble water flows into the water outlet cavity. Because the vortex receives the effect rivers of centrifugal force to expand and scatter when flowing out each whirl chamber, the effect of breathing in is better, and the bubble water of production is more exquisite.

Because each first mixed water course encircles the setting of backward flow chamber, and rivers flow out each first mixed water course with higher speed, consequently can form the negative pressure in backward flow chamber department, receive the influence of negative pressure to produce suction, the bubble water portion that is close to the backward flow chamber in the play water cavity is inhaled the backward flow intracavity. Because the backflow cavity is communicated with the first channel, a part of bubble water sucked into the backflow cavity flows back into the first channel, and the other part of bubble water impacts the cavity wall of the backflow cavity and then flows out of the water outlet. The bubble water flowing into the first channel enters the water outlet cavity again after being sucked through the first mixed water channel, and the circulation is repeated, so that bubbles in the bubble water are more sufficient. Because the water flow flowing to the water outlet cavity from the first mixed water channel or the water flow is diffused finely by the vortex under the action of the centrifugal force, the water flow is more easily sucked into the backflow cavity and has better backflow effect.

The water entering the first mixed water channel from the cyclone cavity is diffused under the action of centrifugal force, so that the discharged water is finer and smoother, and is easy to cause water flow disorder due to unstable surrounding air pressure, and the uniformity of the water and gas mixing is influenced. The closer the first channel is to the air suction end during air suction, the better the air suction effect is. Because the side of the first mixed water channel far away from the air suction end of the first channel is far away from the air suction end, and the backflow cavity forms a negative pressure area, the pressure of the negative pressure area around the first mixed water channel is not uniform enough, and water flow is easy to disorder. Set up the backward flow chamber and adsorb bubble water, can fine help adjusting the negative pressure around the first water course of mixing and keep stable, ensure the stability of rivers in the first water course of mixing to ensure inspiratory homogeneity. Therefore, the first mixed water channel and the backflow cavity are complementary, bubble water can be adsorbed and backflow better, and the first mixed water channel is free from the influence of water flow disorder on the air suction effect due to unstable negative pressure.

2. A first water inlet channel and a second mixed water channel are additionally arranged. So that the water entering and discharging device body enters the corresponding second mixed water channel from each first water inlet channel and then enters the water outlet cavity.

The water flow is accelerated to flow out of the first water inlet channel. After the accelerated water flow enters the corresponding second mixed water channels, negative pressure is generated in each second mixed water channel, and air is sucked into each second mixed water channel through the first channel and mixed with the water flow to form bubble water. And the bubble water formed in the second mixed water channel enters the water outlet cavity after being accelerated. The bubble water flowing out of the second mixed water channel and the bubble water flowing out of the first mixed water channel are collided and mixed in the water outlet cavity to form finer bubble water flowing out of the water outlet cavity. The second mixed water channel is additionally arranged, so that the water yield of the water outlet device can be ensured.

The second mixed water channel and the first mixed water channel form an annular array surrounding the backflow cavity, and water in the second mixed water channel enters the water outlet cavity at an accelerated speed, so that the backflow cavity has a better negative pressure forming effect. The water flowing back to the first channel can also flow back to the second mixed water channel to suck air and flow to the water outlet cavity, and the circulation is repeated, so that bubbles of bubble water are more sufficient. The first mixing water channel is arranged at the innermost layer of the annular array, and better backflow of bubble water is facilitated.

The bubble water produced above finally can all impact the cavity wall around the water outlet and then flow out of the water outlet cavity from the water outlet.

3. The water passing areas of the vortex cavity and the first mixed water channel are decreased along the water outlet direction, and a reduced water passing section is formed inevitably. Therefore, when water flows out of the swirling flow cavity and the first mixed water channel, the water flow passes through the reduced flow cross section. The venturi effect indicates that the water flow is accelerated as it passes through the reduced flow cross section.

4. The water passing areas of the first water inlet channel and the second mixed water channel are reduced from large to small along the water outlet direction, and a reduced water passing section is inevitably formed. Therefore, when the water flows out of the first water inlet channel and the second mixed water channel, the water flow passes through the reduced flow cross section. As can be seen from the Venturi effect, the water flow is accelerated as it passes through the reduced flow cross section.

5. The intervals between each first convex column are communicated with the water outlet cavity and the backflow cavity, so that when negative pressure is generated in the backflow cavity, bubble water in the water outlet cavity can be sucked into the backflow cavity through the intervals between the first convex columns. Because each first convex column is distributed along the circumference, consequently in the in-process that rivers are inhaled the return flow chamber, can reciprocate to strike each first convex column and make bubble water more exquisite.

6. Circular or annular is personally submitted to the cross section in backward flow chamber for bubble water through the backward flow chamber backward flow can be more even flow in each second mixed water course and each first mixed water course.

7. Under the condition of the same water outlet area, compared with a common water channel with a circular cross section, the impact range of water flowing out of the polygon is larger, the water flowing out of the polygon water channel has sharp corners, the effect of dispersion is better when collision and cutting are generated, and the bubble water is finer and smoother.

8. The water outlet area of the vortex flow cavity collection section is gradually reduced along the water outlet direction, so that the inner wall of the collection section is necessarily an inclined plane, and the water entering the vortex flow cavity from the inclined water inlet channel is rapidly gathered to form a vortex. The guide section communicates the collection section and the first mixed water channel, the water outlet area of the guide section is equal to that of the collection section, when water flows enter the guide section from the collection section, the vortex is accelerated, and the vortex is guided by the guide section, so that the formed vortex is prevented from being diffused by the action of centrifugal force at an overlarge angle.

9. The maximum water passing area of the second mixed water channel is larger than the minimum water passing area of the first water inlet channel, and when water flow enters the second mixed water channel from the first water inlet channel, enough space is available for adsorbing air. The maximum water passing area of the first mixing water channel is larger than the minimum water passing area of the rotational flow cavity, and when water flow enters the first mixing water channel from the rotational flow cavity, enough space is available for absorbing air.

10. The water collecting cavity communicated with the filtering holes is arranged, so that water flow enters the water collecting cavity after being filtered, and then enters the first water inlet channel and the inclined water inlet channel from the water collecting cavity to form bubble water flow.

11. The first channel is a channel with an annular cross section, so that sucked air can be conveyed into the second mixing water channels or the first mixing water channels more uniformly in the circumferential direction. The first passageway encircles the setting of backward flow chamber, and the rivers that flow back to first passageway through the backward flow chamber can carry to each second mixture water course and first mixture water course more evenly.

12. Arrange the filter screen in the delivery port intracavity and cover the delivery port for the bubble water that forms just flows out the delivery port after the in-process that flows to the delivery port collides with the filter screen, makes bubble water more exquisite.

13. Set up two at least filter screens to the mesh number that makes adjacent filter screen is different, makes the crisscross distribution of hole on the filter screen, makes bubble rivers all can collide when each filter screen, makes bubble water more fine and smooth.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a water outlet device in this embodiment;

FIG. 2 is a perspective exploded view of the water outlet device in the present embodiment from a first viewing angle;

FIG. 3 is a perspective exploded view of the water outlet device in the present embodiment at a second viewing angle;

FIG. 4 is a schematic view of a first perspective of the water outlet device in this embodiment;

FIG. 5 is a schematic diagram of a waterway of the slant water inlet channel and the swirling flow chamber in the present embodiment;

fig. 6 is a schematic water path diagram of the water outlet device in the present embodiment.

Description of the main reference numerals:

a water outlet device body 1; a water outlet cavity 11; a reflux chamber 12; a first channel 13; a swirl chamber 14; a collection section 141; a guide section 142; a water collection chamber 15; an inclined water inlet channel 16;

a water outlet base 2; a water outlet 21; a first chamber 22;

a blister member 3; a foamer body 31; a first cylinder 32; a second column 33; a third column 34; a first annular wall 35; a first through hole 351; a first groove 36; a notch 37; a second mixed flume 38; a first mixed flume 39;

a jet spray 4; a jet spray body 41; a second stud 42; a first cavity 43; a fourth column 44; a first water course 441; a second water channel 442; a fifth column 45; a sixth column 46; a first water inlet channel 47; a slot 48;

a filter member 5; a filter body 51; a bump 52; a filtering hole 53; an insert block 54;

a filter screen 6;

a first convex column 7;

a first direction 8.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the claims, the description and the drawings of the present invention, unless explicitly defined otherwise, the terms "first", "second" or "third", etc. are used to distinguish between different objects and are not used to describe a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional terms such as "central", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc., are used herein to indicate orientations and positional relationships, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the specification and the drawings of the present application, unless otherwise specifically limited, the terms "fixedly connected" or "fixedly connected" should be used in a broad sense, i.e., any connection mode without a displacement relationship or a relative rotation relationship between the two, i.e., including non-detachably fixed connection, integration and fixed connection through other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

As shown in fig. 1 to 6, the water outlet device includes a water outlet device body 1 and a filter screen 6. The water outlet device body 1 is provided with a first channel 13, a water outlet cavity 11, a backflow cavity 12, a water collecting cavity 15, a plurality of first water inlet channels 47, a rotational flow cavity 14, an inclined water inlet channel 16, a second mixed water channel 38, a first mixed water channel 39 and a filter hole 53.

As shown in fig. 4 and 6, the first passage 13 communicates with the air outside the water outlet device, and communicates with each of the second mixing flumes 38 and each of the first mixing flumes 39. The cross section of the first channel 13 is annular, the first channel 13 is arranged around the backflow cavity 12, the side wall of the water outlet device body 1 is provided with an air suction port for communicating air with the first channel 13, and the air suction port is provided with a plurality of air suction ports which are uniformly distributed along the circumferential direction. The first channel 13 is a channel with an annular cross section, so that the sucked-in air can be conveyed more uniformly in the circumferential direction into the second mixing channels 38 or the first mixing channels 39. The first channel 13 is arranged around the return chamber 12, and the water flow returning to the first channel 13 via the return chamber 12 can be conveyed more uniformly to the respective second mixing flume 38 and first mixing flume 39.

As shown in fig. 1, 4 and 6, the wall of the water outlet chamber 11 is provided with a plurality of water outlets 21. The return cavity 12 has one end communicating with the outlet cavity 11 and the other end communicating with the first channel 13. In practical applications, the flow cross section of the return cavity 12 may be circular or annular. So that the bubble water flowing back through the return chamber 12 can more uniformly flow into the respective second mixing water passages 38 and the respective first mixing water passages 39.

As shown in fig. 4 and 6, the first water inlet channel 47 and the second mixed water channel 38 are correspondingly communicated, and the water passing areas of the first water inlet channel and the second mixed water channel are decreased from large to small along the water outlet direction, so that the decreased water passing areas inevitably form a reduced flow cross section. The water flow thus passes through a reduced flow cross-section as it exits the first inlet channel 47 and the second mixing channel 38. According to the venturi effect, the water flow is accelerated when passing through the reduced flow cross section, so that the water flow is accelerated to flow out from each first water inlet channel 47 and each second mixed water channel 38. The flow of water from each first water inlet channel 47 to each second mixing channel 38 is accelerated such that a negative pressure is created within each second mixing channel 38 and air is drawn into each second mixing channel 38 through the first channel 13. The flow cross section of the first water inlet channel 47 and/or the second mixed water channel 38 is polygonal. In this embodiment, the cross-section of overflowing of first inlet channel 47 and second mixed water course 38 is the polygon, under the condition of the same water outlet area, compare for circular shape water course with the cross-section of overflowing commonly used, the water impact scope that the polygon flows out is bigger, and takes the closed angle through the water that the polygon water course flows out, and its effect of dispersion is better when producing collision and cutting for bubble water is more exquisite. The flow cross sections of the first water inlet channel 47 and the second mixed water channel 38 are both triangular in this embodiment.

As shown in fig. 4 to 6, the inclined water inlet channels 16 are correspondingly communicated with the respective swirling flow cavities 14, so that water entering the respective swirling flow cavities 14 from the respective inclined water inlet channels 16 rotates around a first axis parallel to the water outlet direction in the swirling flow cavities 14; each swirl cavity 14 is correspondingly communicated with each first mixed water channel 39, and the water passing area of the swirl cavities and the water passing areas of the first mixed water channels are changed from large to small along the water outlet direction, so that the water passing areas are inevitably changed from large to small to form a reduced flow cross section. Thus, the water flows out of the swirl chamber 14 and the first mixing channel 39 through a reduced flow cross-section. As can be seen from the venturi effect, the water flow is accelerated when passing through the reduced flow cross section, so that the water flow is accelerated to flow out from each swirl chamber 14 and each first mixing channel 39. The water flow from the swirl chamber 14 accelerating to the first mixing flume 39 creates a negative pressure within each first mixing flume 39 and draws air into each first mixing flume 39 through the first passage 13.

In the present embodiment, as shown in fig. 2 and 4, each second mixing flume 38 and each first mixing flume 39 are communicated with the water outlet chamber 11, and form an annular array around the return chamber 12; each first mixing flume 39 is located in the innermost layer of the annular array.

As shown in fig. 4, the water collecting chamber 15 communicates with the first water inlet channel 47 and the inclined water inlet channel 16, and each filtering hole 53 communicates with the water collecting chamber 15.

Specifically, as shown in fig. 2 and 3, the water outlet device body 1 includes a water outlet base 2, a foaming member 3, a jet spray member 4 and a filter member 5, which are sequentially arranged from bottom to top along a first direction 8.

As shown in fig. 2 and 3, the water outlet base 2 is provided with a first chamber 22 with an open top end, and the water outlet 21 is disposed on the water outlet base 2 and is communicated with the first chamber 22. Specifically. The water outlet base 2 is a cylindrical body with an opening at the top end, the inner cavity of the water outlet base 2 forms a first chamber 22, and a plurality of water outlets 21 are arranged on the bottom wall of the water outlet base 2.

As shown in FIG. 2, FIG. 3 and FIG. 4, one end of the foaming member 3 is located on the end surface of the top end of the water outlet base 2 to cover the opening of the top end of the first chamber 22, and encloses with the water outlet base 2 to form the water outlet cavity 11. The frothing member 3 is provided with a first groove 36 opening away from the water outlet seat 2. The side wall of the frothing member 3 forms part of the side wall of the outlet device body 1 and is provided with a gap 37 communicating the first groove 36 with the air. The middle part of the foaming member 3 is further provided with a first through hole 351 which is opened at the bottom of the first groove 36 and is communicated with the water outlet cavity 11.

Specifically, the foaming member 3 includes a foaming member body 31, and the foaming member body 31 is located on the end surface of the top end of the water outlet base 2 and covers the opening of the top end of the water outlet base 2. The foaming member body 31 extends into the outer side wall of the first chamber 22 of the water outlet base 2 and is also in clamping fit with the inner wall of the water outlet base 2. The side wall of the frothing member body 31 outside the first chamber 22 of the water outlet base 2 forms a part of the side wall of the water outlet device body 1, and the notch 37 is arranged on the side wall of the part of the frothing member body 31. The surface of the foaming element body 31 facing the inner cavity side of the water outlet seat 2 is convexly provided with a plurality of first columns 32, second columns 33, third columns 34 and a first annular wall 35. The first annular wall 35 is located in the middle of the foaming body 31, and an inner hole of the first annular wall 35 penetrates through the foaming body 31 to form a first through hole 351. The first column 32 is a cylinder which is uniformly arranged in the circumferential direction and is disposed around the first annular wall 35. The second columns 33 are columns with triangular cross sections and are uniformly distributed along the circumferential direction, and each second column 33 is positioned between two adjacent first columns 32; the second post 33 is also disposed around the first annular wall 35. The third column 34 is a cylinder which is uniformly arranged in the circumferential direction and is disposed around the first annular wall 35, the first column 32 and the second column 33. The side of the foaming element body 31 facing away from the inner cavity of the water outlet base 2 is formed with a first groove 36 with an open top end.

The second mixing flume 38 is disposed on the foaming member 3, and the water inlet end of each second mixing flume 38 is communicated with the first groove 36. A portion of the second mixing flume 38 extends through the second cylinder 33 and the bubbler body 31 in the first direction 8, and another portion extends through the third cylinder 34 and the bubbler body 31 in the first direction 8. The first mixing flume 39 is disposed on the foaming member 3, and the water inlet end of each first mixing flume 39 is communicated with the first groove 36. A first mixing flume 39 extends through the first cylinder 32 and the foamer body 31 in a first direction 8.

As shown in fig. 2, 3 and 4, the jet spray piece 4 is located on an end surface of the end of the foaming piece 3 facing away from the water outlet base 2, and encloses with the foaming piece 3 to form a first channel 13 and a return cavity 12, and each first water inlet channel 47 is provided on the jet spray piece 4. Specifically, jet spray 4 includes a jet spray body 41 and a second boss 42. The jet spray piece body 41 is located on the end surface of one end of the foaming piece 3 departing from the water outlet base 2, namely the end surface of one end of the foaming piece body 31 departing from the water outlet base 2; the jet spray body 41 encloses a first channel 13 with the wall of the first channel 36 of the frothing member 3 and an air suction opening with the side wall of the gap 37. In this embodiment, the second protruding pillar 42 is protruded from the side of the jet spray body 41 facing the foaming body 31, the second protruding pillar 42 is located in the middle of the jet spray body 41, and the second protruding pillar 42 extends into the hole of the first through hole 351 and surrounds the hole wall of the first through hole 351 to form the annular backflow cavity 12. The side of the jet spray body 41 facing the foamer body 31 encloses with the foamer body 31 an annular first channel 13 which surrounds the return chamber 12, the side wall of the recess 37 of the foamer body 31 and the jet spray body 41 enclosing a suction opening. In this embodiment, the first cylinder 32, the second cylinder 33, and the third cylinder 34 collectively form a multi-layer structure surrounding the first annular wall 35 such that the second mixing flume 38 and the first mixing flume 39 form an annular array surrounding the return chamber 12. And because first column 32 is innermost, each first mixing flume 39 is innermost in the annular array.

A first water channel 441 and a second water channel 442 are arranged on the jet spray piece body 41, and the extension direction of the first water channel 441 is vertical to the water outlet direction of the second water channel 442; the two ends of the first water channel 441 are respectively communicated with the water collecting cavity 15 and the second water channel 442, and the first water channel 441 is further provided with an opening facing the filter piece 5; the second water passage 442 has an opening toward the filter member 5 at one end and communicates with the first mixing water passage 39 at the other end.

In particular, the side of the jet spray body 41 facing away from the frothing member 3 is formed with an open-topped first chamber 43. A fourth column 44, a fifth column 45 and a sixth column 46 are protruded from the bottom wall of the first chamber 43. The fourth cylinders 44 are uniformly arranged along the circumferential direction and are arranged corresponding to the first cylinders 32 on the foaming member 3. The fifth columns 45 are uniformly distributed along the circumferential direction, and each fifth column 45 is positioned between two adjacent fourth columns 44; the fifth cylinder 45 is arranged in correspondence with the second cylinder 33 of the frothing member 3. The sixth cylinders 46 are uniformly arranged along the circumferential direction and are arranged around the fourth cylinder 44 and the fifth cylinder 45; sixth cylinder 46 is also arranged in correspondence with third cylinder 34 of frothing member 3. Each fourth cylinder 44 has a first channel 441 and a second channel 442. The first water channel 441 is disposed at an end of the fourth cylinder 44 far from the foaming member 3, two ends of the first water channel 441 are respectively communicated with the first cavity 43 and the second water channel 442, and a top end of the first water channel 441 is further opened at an end surface of a free end of the fourth cylinder 44 to form an opening facing the filtering member 5. Second water channel 442 runs through fourth cylinder 44 and jet spray body 41, and its opening at the free end of fourth cylinder 44 forms an opening towards filter element 5, the opening at jet spray body 41 communicating with first mixing water channel 39. A first inlet channel 47 is provided on jet spray 4, one part of which runs through fifth cylinder 45 and jet spray body 41 and the other part runs through sixth cylinder 46 and jet spray body 41. The middle of the bottom wall of the first cavity 43 is further provided with two third protruding columns in a protruding manner, the two third protruding columns are arranged at intervals, and slots 48 with top ends open are formed at intervals between the two third protruding columns.

As shown in fig. 2, 3 and 4, the filter member 5 is installed at an end of the jet spray member 4 facing away from the foaming member 3, and encloses with the jet spray member 4 to form the inclined inlet channel 16, the swirling flow chamber 14 and the water collecting chamber 15, and the filter holes 53 are provided on the filter member 5. Specifically, the filter member 5 is installed at one end of the jet spray member body 41 facing away from the foaming member 3, and encloses with the jet spray member body 41 to form the inclined water inlet channel 16, the swirling flow cavity 14 and the water collecting cavity 15. The filter member 5 shields the opening of the first water channel 441 facing the filter member 5 and encloses with the inner wall of the first water channel 441 to form the inclined water inlet channel 16, and the filter member 5 also shields the opening of the second water channel 442 facing the filter member 5 and encloses with the inner wall of the second water channel 442 to form the vortex chamber 14. Specifically, the filter member 5 includes a substantially conical filter member body 51, and a plurality of projections 52 are protruded from one side of the filter member body 51 facing the jet spray member 4, and the projections 52 are uniformly arranged along the circumferential direction. The filter body 51 is provided with a plurality of filter holes 53 in the area avoiding the projection 52. One end of the filter member 5 is installed in the first chamber 43 of the jet spray member body 41. The water collection chamber 15 is formed by the filter element 5 and the jet spray body 41. The projection 52 on the filter element 5 abuts against the end face of the free end of the fourth cylinder 44. The protrusion 52 blocks an opening at the top end of the first water channel 441, and encloses with the inner wall of the first water channel 441 to form the inclined water channel 16. The protrusion 52 blocks the opening at the top end of the second water channel 442, and encloses with the inner wall of the second water channel 442 to form the vortex chamber 14. The filter piece 5 and the jet spray piece 4 jointly enclose to form an inclined water inlet channel 16 and a rotational flow cavity 14, so that the forming and the demoulding are facilitated. The middle of the side of the filter body 51 facing the jet spray element 4 is provided with an insert 54 which fits into the receptacle 48. The insertion block 54 and the insertion slot 48 cooperate to facilitate the positioning and installation of the filter member 5, and at the same time, to make the installation of the filter member 5 more secure.

As shown in fig. 4 and 5, the swirling chamber 14 is provided with a converging section 141 and a guiding section 142. The inclined water inlet channel 16 is communicated with the collection section 141, and the water passing area of the collection section 141 is gradually reduced along the water outlet direction. The guiding section 142 connects the collecting section 141 and the first mixing channel 39, and the water outlet area of the guiding section 142 is equal to the smallest water outlet area of the collecting section 141. In this embodiment, the inner wall of the collecting section 141 is an inclined surface, which helps the water entering the swirling chamber 14 from the inclined water inlet channel 16 to quickly gather and form a vortex. The water outlet area of the guide section 142 is equal to that of the collection section 141, when water flows into the guide section 142 from the collection section 141, the eddy current flowing through the area with the reduced water passing area is accelerated, the eddy current can be guided by the guide section 142, and the formed eddy current is prevented from being diffused at an overlarge angle under the action of centrifugal force.

In the present embodiment, as shown in fig. 4, the maximum water passing area of the second mixing channel 38 is larger than the minimum water passing area of the first water inlet channel 47, and there is enough space for air to be adsorbed when the water flow enters the second mixing channel 38 from the first water inlet channel 47. The maximum flow area of the first mixing flume 39 is greater than the minimum flow area of the swirl chamber 14, allowing sufficient space for air to be adsorbed as the water flow enters the first mixing flume 39 from the swirl chamber 14.

As shown in fig. 2, 3 and 4, the filter screen 6 is disposed in the water outlet chamber 11 and covers the water outlets 21. In this embodiment, the filter screen 6 is disposed on the bottom wall of the inner cavity of the water outlet base 2. In this embodiment, preferably, the filter screens 6 are at least two, and each filter screen 6 is stacked layer by layer, and the mesh number of two adjacent filter screens 6 is different. The filter screen 6 is arranged in the water outlet cavity 11 and covers the water outlet 21, so that the formed bubble water flows out of the water outlet 21 after colliding with the filter screen 6 in the process of flowing to the water outlet 21, and the bubble water is finer and smoother. At least two filter screens 6 are arranged, the mesh numbers of the adjacent filter screens 6 are different, holes in the filter screens 6 are distributed in a staggered mode, bubble water can collide when flowing through the filter screens 6, and the bubble water is fine and smooth.

As shown in fig. 3 and 4, each first convex column 7 is protruded on the end surface of the end of the return cavity 12 communicated with the water outlet cavity 11 at intervals, and the interval between two adjacent first convex columns 7 is communicated with the water outlet cavity 11 and the return cavity 12. Specifically, each first protruding column 7 is protruded on an end surface of the first annular wall 35 facing one end of the water outlet cavity 11. In the present example, the free end of each first projection 7 abuts against the uppermost filter screen 6.

The water outlet device of the embodiment is installed:

as shown in fig. 1 to 6, firstly, the filter screens 6 are stacked one on top of another and placed on the bottom wall of the inner cavity of the water outlet base 2. Then, the foaming member body 31 is seated on the end surface of the opening end of the water outlet base 2 and is in snap fit with the water outlet base 2. Next, the jet spray 4 is mounted on the foaming member 3. The filter element 5 is then mounted in the first chamber 43 of the jet spray element 4, and the mounting is completed.

The water outlet device of the embodiment is used:

as shown in fig. 1 to 6, first, the water collecting chamber 15 of the water outlet device is communicated with the water source through the filtering holes 53 of the filtering member 5. The water enters the water collecting cavity 15 after being filtered by the filtering holes 53, one part of the water in the water collecting cavity 15 enters the first water inlet channel 47, and the other part of the water enters the inclined water inlet channel 16.

The water entering each of the angled water inlet channels 16 enters the corresponding swirl chamber 14 and rapidly forms a vortex rotating about the first axis at the angled inner wall of each swirl chamber 14. Since the water passing area of each swirl chamber 14 is reduced from large to small, the water flow is accelerated when flowing out of each swirl chamber 14, as can be seen from the venturi effect. After the accelerated water flow enters the corresponding first mixing water channel 39, a negative pressure is generated in each first mixing water channel 39, and air is sucked into each first mixing water channel 39 through the first channel 13 to be mixed with the water flow to form bubble water. The water passing area of the first mixing channel 39 is gradually reduced, and the venturi effect indicates that the water flow is accelerated in the first mixing channel 39 and then enters the water outlet cavity 11. Because the eddy flows are diffused under the action of centrifugal force when flowing out of each eddy flow cavity 14, the air suction effect is better, and the generated bubble water is finer and smoother. Since the first mixing channels 39 are arranged around the return chamber 12 and the water flow is accelerated out of the first mixing channels 39, a negative pressure is formed at the return chamber 12.

Since the water passing area of the first water inlet channel 47 decreases from large to small along the water outlet direction, the water flow is accelerated when flowing out of each first water inlet channel 47 according to the venturi effect. After the accelerated water flow enters the corresponding second mixing water channel 38, negative pressure is generated in each second mixing water channel 38 to form a pressure difference. Due to the pressure difference, air can be sucked into each second mixing flume 38 through the first passage 13 to be mixed with the water flow to form bubble water. Since the water passing area of each second mixing channel 38 is gradually reduced, as known from the venturi effect, the water flow enters the water outlet chamber 11 after being accelerated in each second mixing channel 38. Since the second mixing flume 38 and the first mixing flume 39 form an annular array surrounding the return cavity 12, the water of the second mixing flume 38 accelerates into the outlet cavity 11, so that the effect of negative pressure formation in the return cavity 12 is better.

The bubble water flowing out of the second mixing water channel 38 and the bubble spray flowing out of the first mixing water channel 39 collide and mix in the water outlet cavity 11 to form finer bubble water, and the finer bubble water flows out of the water outlet cavity 11, and the water outlet amount of the water outlet device can be ensured by additionally arranging the second mixing water channel 38.

Since the second mixing flume 38 and the first mixing flume 39 form an annular array surrounding the recirculation chamber 12, the accelerated flow of water from the second mixing flume 38 and the first mixing flume 39 into the outlet chamber 11 results in a negative pressure zone at the recirculation chamber 12. The suction force is generated under the influence of the negative pressure, and the bubble water part in the water outlet cavity 11 close to the return cavity 12 is sucked into the return cavity 12.

Because the first convex columns 7 are arranged at one end of the return cavity 12 communicated with the water outlet cavity 11, bubble water in the water outlet cavity 11 is sucked into the return cavity 12 through the intervals among the first convex columns 7 by suction force generated by negative pressure. Because the first convex columns 7 are distributed along the circumferential direction, when bubble water is sucked into the backflow cavity 12, the bubble water can repeatedly impact each first convex column 7, so that the bubble water is finer and smoother.

Because the return cavity 12 is communicated with the first channel 13, a part of bubble water sucked into the return cavity 12 flows back into the first channel 13, and the other part of bubble water collides with each filter screen 6 and flows out from the water outlet 21 after being rectified by the filter screens 6 after impacting the cavity wall of the return cavity 12 and the first convex column 7. The bubble water flowing into the first channel 13 enters the water outlet cavity 11 again after being sucked through the second mixed water channel 38 and the first mixed water channel 39, and the operation is repeated in such a circulating way, so that bubbles of the bubble water are finer and more sufficient. The bubble water in the water outlet cavity 11 finally collides with each layer of filter screen 6, and collides with the cavity wall around the water outlet 21 after being filtered and rectified, and finally flows out from the water outlet 21.

The bubble water produced by the water outlet device of the embodiment is mixed by the columnar bubble water and the vortex-shaped bubble water, so that the bubbles are finer and finer. And part of water after mixing is also scattered and reflowed for a plurality of times by the first convex column 7 and then is sucked. Finally, all the bubble water flows out of the water outlet 21 after impacting the walls of the multi-layer filter screen 6 and the water outlet cavity 11 to form micro bubble water. The water outlet device of the embodiment can generate micro-bubble water without heating water, is not limited during use, and is more convenient.

In this embodiment, because the outflow of the first mixed water channel 39 is still the vortex and is spread out under the effect of the centrifugal force, the outflow is more fine and smooth, and is more easily sucked into the backflow cavity 12, so the first mixed water channel 39 is arranged at the innermost layer of the annular array, so that the first mixed water channel is closer to the backflow cavity 12, and the backflow effect is better.

However, the water discharged from the first water mixing channel 39 is finer than the columnar bubble water discharged from the second water mixing channel 38, and therefore, the water is likely to be disturbed due to unstable ambient air pressure, which affects the uniformity of mixing with the gas. The suction effect of the first channel 13 is better when the first channel is closer to the suction end during suction, and because the first mixed water channel 39 is arranged on the innermost layer of the annular array and the return cavity 12 to form a negative pressure area, the pressure of the negative pressure area around the first mixed water channel 39 is not uniform enough, and the water flow is easy to be disturbed. Set up backward flow chamber 12 and adsorb bubble water, the negative pressure that helps adjusting around first mixed water course 39 that can be fine remains stable, ensures the stability of rivers in the first mixed water course 39 to ensure inspiratory homogeneity. Therefore, the first mixed water channel 39 and the return cavity 12 supplement each other, so that bubble water is better adsorbed, and the first mixed water channel 39 is prevented from causing water flow disorder due to unstable negative pressure to affect the air suction effect.

The description of the above specification and examples is intended to be illustrative, but not limiting, of the scope of the invention. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the invention or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the invention.

Claims

1. A water outlet device is characterized by comprising a water outlet device body; the water outlet device body (1) is provided with a first channel (13), a water outlet cavity (11), a backflow cavity (12), a plurality of rotational flow cavities (14), an inclined water inlet channel (16) and a first mixed water channel (39);

the first channel (13) is communicated with the air and is communicated with each first mixed water channel (39);

a plurality of water outlets (21) are arranged on the wall of the water outlet cavity (11);

one end of the backflow cavity (12) is communicated with the water outlet cavity (11), and the other end of the backflow cavity is communicated with the first channel (13);

each inclined water inlet channel (16) is correspondingly communicated with each rotational flow cavity (14), so that water entering each corresponding rotational flow cavity (14) from each inclined water inlet channel (16) rotates around a first axis parallel to the water outlet direction in each rotational flow cavity (14); each rotational flow cavity (14) is communicated with each first mixing water channel (39) correspondingly, water flows flow out of each rotational flow cavity (14) and each first mixing water channel (39) in an accelerated mode, and the water flow flowing from the rotational flow cavity (14) to the first mixing water channel (39) in an accelerated mode enables negative pressure to be formed in each first mixing water channel (39) and air is sucked into each first mixing water channel (39) through the first channel (13); each first mixing water channel (39) is communicated with the water outlet cavity (11), and each first mixing water channel (39) is arranged around the backflow cavity (12).

2. A water outlet device according to claim 1, wherein the water outlet device body (1) further comprises a plurality of first water inlet channels (47) and second mixed water channels (38);

the first channel (13) is also communicated with each second mixed water channel (38);

each first water inlet channel (47) is communicated with each second mixed water channel (38) correspondingly, water flow is accelerated to flow out of each first water inlet channel (47) and each second mixed water channel (38), and the water flow accelerated from each first water inlet channel (47) to each second mixed water channel (38) enables negative pressure to be formed in each second mixed water channel (38) and air is sucked into each second mixed water channel (38) through the first channel (13);

each second mixing channel (38) is communicated with the water outlet cavity (11), each second mixing channel (38) and each first mixing channel (39) jointly form an annular array surrounding the backflow cavity (12), and each first mixing channel (39) is located on the innermost layer of the annular array.

3. A water outlet device according to claim 1, wherein the water passing area of each swirl chamber (14) and each first mixing channel (39) decreases from large to small in the water outlet direction.

4. A water outlet device according to claim 2, wherein the water passing area of each of the first water inlet channel (47) and the second mixed water channel (38) decreases from large to small in the water outlet direction.

5. The water outlet device as claimed in claim 1, wherein the water outlet device body (1) is further provided with a plurality of first convex columns (7), each first convex column (7) is arranged on the end surface of the end of the water outlet cavity (11) communicated with the water return cavity (12) in a protruding manner at intervals, and the interval between two adjacent first convex columns (7) is communicated with the water outlet cavity (11) and the water return cavity (12).

6. A water outlet device according to claim 1, wherein the water passing cross-section of the return chamber (12) is circular or annular.

7. A water outlet device according to claim 2, wherein the first water inlet channel (47) and/or the second mixing channel (38) has a polygonal cross-section.

8. A water outlet device according to claim 1, wherein the vortex chamber (14) is provided with a collecting section (141) and a guiding section (142);

the inclined water inlet channel (16) is communicated with the collection section (141); the water passing area of the collection section (141) is gradually reduced along the water outlet direction;

the guide section (142) is communicated with the collection section (141) and the first mixed water channel (39), and the water outlet area of the guide section (142) is equal to the minimum water outlet area of the collection section (141).

9. A water outlet device according to claim 2, wherein the maximum water passage area of the second mixing channel (38) is larger than the minimum water passage area of the first water inlet channel (47); the maximum water passing area of the first mixing water channel (39) is larger than the minimum water passing area of the rotational flow cavity (14).

10. A water outlet device according to claim 2, wherein the water outlet device body (1) is further provided with a water collecting cavity (15) and a plurality of filtering holes (53);

the water collecting cavity (15) is communicated with the first water inlet channel (47) and the inclined water inlet channel (16);

each filtering hole (53) is communicated with the water collecting cavity (15).

11. The water outlet device according to claim 10, wherein the first channel (13) is annular in cross section, the first channel (13) is arranged around the return cavity (12), and the side wall of the water outlet device body is provided with an air suction port for communicating the first channel (13) and air.

12. A water outlet device according to claim 1, further comprising a filter screen (6);

the filter screen (6) is arranged in the water outlet cavity (11) and covers the water outlets (21).

13. A water outlet device according to claim 12, wherein there are at least two of said filter screens (6);

each filter screen (6) is overlapped layer by layer, and the mesh number of two adjacent filter screens (6) is different.

14. A water outlet device according to claim 11, characterized in that the water outlet device body (1) comprises a water outlet base (2), a frothing member (3), a jet spray member (4) and a filter member (5);

the water outlet base (2) is provided with a first cavity (22) with an opening at the top end; the water outlet (21) is arranged on the water outlet seat (2) and is communicated with the first cavity (22);

one end of the foaming piece (3) is positioned on the end surface of the top end of the water outlet seat (2) to shield the opening at the top end of the first cavity (22) and enclose with the water outlet seat (2) to form the water outlet cavity (11);

each first mixing channel (39) and each second mixing channel (38) are arranged on the foaming piece (3);

the jet spray piece (4) is located on the end face, away from the water outlet base (2), of the foaming piece (3) and surrounds the foaming piece (3) to form the first channel (13) and the backflow cavity (12); each first water inlet channel (47) is arranged on the jet flow spraying piece (4);

the filtering piece (5) is arranged at one end, deviating from the foaming piece (3), of the jet spray piece (4), and is enclosed by the jet spray piece (4) to form the inclined water inlet channel (16), the rotational flow cavity (14) and the water collecting cavity (15), and the filtering holes (53) are formed in the filtering piece (5).

15. A water outlet device according to claim 14, wherein the foaming member (3) is provided with a first groove (36) opening away from the outlet base (2); the side wall of the foaming piece (3) forms a part of the side wall of the water outlet device body and is provided with a gap (37) for communicating the first groove (36) with air; the middle part of the foaming piece (3) is also provided with a first through hole (351) which is opened at the bottom of the first groove (36) and is communicated with the water outlet cavity (11); the water inlet ends of the first mixing water channel (39) and the second mixing water channel (38) are communicated with the first groove (36); the jet spray (4) comprises a jet spray body (41) and a second stud (42); the jet spray piece body (41) is located on the end face, away from the water outlet seat (2), of one end of the foaming piece (3) and surrounds the groove wall of the first groove (36) to form the first channel (13), and the jet spray piece body and the side wall of the notch (37) surround to form the air suction port;

the second convex column (42) is arranged on one side, facing the foaming piece (3), of the jet flow spraying piece body (41) in a protruding mode, extends into the first through hole (351) and is surrounded with the hole wall of the first through hole (351) to form the backflow cavity (12); the filtering piece (5) is arranged at one end, departing from the foaming piece (3), of the jet spray piece body (41) and is enclosed with the jet spray piece body (41) to form the inclined water inlet channel (16), the rotational flow cavity (14) and the water collecting cavity (15).

16. A water outlet device according to claim 15, wherein the jet spray body (41) is provided with a first channel (441) and a second channel (442);

the extension direction of the first water channel (441) is vertical to the water outlet direction of the second water channel (442); the two ends of the first water channel (441) are respectively communicated with the water collecting cavity (15) and the second water channel (442), and the first water channel (441) is also provided with an opening facing the filter piece (5); one end of the second water channel (442) is provided with an opening facing the filter element (5), and the other end of the second water channel is communicated with the first mixed water channel (39);

when the filtering piece (5) is arranged on the jet spray piece (4), the opening of the first water channel (441) facing the filtering piece (5) and the inner wall of the first water channel (441) are jointly enclosed to form the inclined water inlet channel (16), and the opening of the second water channel (442) facing the filtering piece (5) and the inner wall of the second water channel (442) are jointly enclosed to form the rotational flow cavity (14) by the filtering piece (5).