A bubbling device and a water outlet device

Abstract

A kind of foaming device and water outlet device, including first water outlet flow channel, first water outlet flow channel includes the water distribution chamber and gas mixing chamber in turn in water flow direction Communication, water distribution chamber is equipped with the pressure stabilizer for stabilizing the flow of first water outlet flow channel, after the stable flow of inlet water flow, it is divided into multiple water flows after flowing through water distribution hole, multiple water flows are successively impacted on reflection wall and scattering wall in the process of flowing from water distribution chamber to gas mixing chamber, reflection wall reflects the water flow emitted from water distribution chamber to scattering wall, and forms free scattering flow after water flow is reflected to scattering wall, scattering flow includes several particle water droplets dispersed in gas mixing chamber, increases the contact area of scattering flow and air in gas mixing chamber, so that air is uniformly mixed in water, and strengthens the foaming effect of water outlet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frothing device, in particular to a frothing device and water outlet device. BACKGROUND

[0002] The conventional frother has uneven frothing effect, is easily affected by the water inlet pressure, and has uneven water outlet, water splashing and obvious suction noise during water outlet, which affects the user experience.

[0003] In addition, with the passage of time, dirt will gradually accumulate and block the water outlet holes of the frother filter screen, thereby reducing the water outlet flow, requiring maintenance personnel to maintain, and it usually takes half a day or even longer to complete the cleaning or replacement of one frother, increasing the maintenance cost and reducing the user satisfaction, and at the same time, the service life of the frother is seriously affected by the filter screen blockage, and many frothers are forced to be replaced before reaching their designed service life, increasing the user's use cost. SUMMARY

[0004] The present application aims to provide a frothing device and water outlet device, which aims to solve the problem of uneven frothing effect of the frother and easy to be affected by the water inlet pressure.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A frothing device, comprising a body, the body is provided with a first water inlet, a first water outlet and a first water outlet flow channel communicating the first water inlet and the first water outlet, the first water outlet flow channel comprises a water distribution cavity and a gas mixing cavity communicated in sequence along the water flow direction, the body is provided with a suction hole communicated with the gas mixing cavity;

[0007] The water distribution cavity is communicated with the gas mixing cavity through a plurality of water distribution holes, a pressure stabilizing piece is arranged in the water distribution cavity, a gap between the pressure stabilizing piece and the body constitutes a main flow limiting channel, the pressure stabilizing piece deforms elastically based on the pressure of the water inlet, thereby adjusting the water passing cross-sectional area of the main flow limiting channel;

[0008] The gas mixing cavity is provided with a reflection wall and a scattering wall, the water outlet direction of the water distribution hole is towards the reflection wall, so that the water flow shot from the water distribution hole is reflected to the scattering wall by the reflection wall, and the water flow is formed into a free scattering flow after being reflected to the scattering wall.

[0009] Further, the position below the scattering wall in the gas mixing cavity is provided with a buffer wall, the buffer wall is used for receiving the scattering flow and reducing the flow rate of the scattering flow.

[0010] Further, the body comprises a shell, a hydrophobic element and a filter screen which are sequentially arranged in the shell, a space surrounded by the hydrophobic element and the filter screen forms the water distribution cavity, a space surrounded by the shell and the hydrophobic element forms the air mixing cavity, the shell is provided with the first water outlet and the air inlet hole, the hydrophobic element is provided with a plurality of water distribution holes, the surface of the hydrophobic element in the air mixing cavity is provided with an arc-shaped portion protruding towards the air mixing cavity and a first annular wall extending towards the air mixing cavity, the first annular wall is located outside the arc-shaped portion, the arc-shaped portion forms the scattering wall, the first annular wall forms the reflecting wall, and the filter holes of the filter screen form the first water inlet.

[0011] Further, the hydrophobic element is provided with a second annular wall extending towards the filter screen, the pressure stabilizing element is provided with a water passing hole, the pressure stabilizing element is sleeved outside the second annular wall, and a gap between the water passing hole and the second annular wall forms the first flow limiting channel.

[0012] Further, the second annular wall is provided with a plurality of convex portions which are circumferentially and interval arranged along the axis of the second annular wall, the convex portions are located below the pressure stabilizing element, the radial dimension of the convex portions is greater than the radial dimension of the water passing hole, the gap between the pressure stabilizing element and the convex portions forms the main flow limiting channel, and the gaps between the convex portions form the second flow limiting channel.

[0013] Further, when the water inlet pressure is less than a preset value, the pressure stabilizing element does not elastically deform, and the water inlet flow passes through the first flow limiting channel, the main flow limiting channel and the second flow limiting channel; when the water inlet flow pressure is greater than the preset value, the pressure stabilizing element elastically deforms, the water passing cross-sectional area of the main flow limiting channel gradually decreases, until the pressure stabilizing element abuts against the upper end surface of the convex portion to close the main flow limiting channel, and the water inlet flow passes through the first flow limiting channel and the second flow limiting channel.

[0014] Further, the hydrophobic element is provided with a third annular wall extending towards the shell, and the third annular wall and the inner side wall of the shell form the buffer wall.

[0015] Further, the filter screen is provided with a guide surface which is recessed towards the water outlet direction, the guide surface is provided with the first water inlet, the lowest part of the guide surface is provided with a second water inlet, the shell is further provided with a second water outlet and a second water outlet channel which communicates the second water inlet and the second water outlet, and a guide rod device is arranged in the second water outlet channel and can move along the axial direction of the second water outlet channel to close or open the second water inlet.

[0016] Further, the elastic member is sleeved on the guide rod device, one end of the elastic member abuts against the guide rod device, and the other end of the elastic member abuts against the body; when water is flowing in, the guide rod device is pressed to overcome the elastic force of the elastic member to close the second water inlet; when water flowing in is stopped, the guide rod device is opened under the elastic force of the elastic member to open the second water inlet.

[0017] A water outlet device comprises a water outlet valve body, and the water outlet of the water outlet valve body is provided with the bubbling device as described above, and the bubbling device is installed at the water outlet of the water outlet valve body.

[0018] The present application has the following beneficial effects:

[0019] 1. The bubbling device comprises a first water outlet flow channel, the first water outlet flow channel comprises a water distribution cavity and a gas mixing cavity which are sequentially communicated along the water flow direction, the water distribution cavity is provided with a pressure stabilizing member for stabilizing the flow of the first water outlet flow channel, after the water flow is stabilized, the water flow is separated into multiple water flows after flowing through a water distribution hole, and the multiple water flows impact the reflection wall and the scattering wall in sequence during the process of flowing from the water distribution cavity to the gas mixing cavity, the reflection wall reflects the water flow from the water distribution cavity to the scattering wall, and the water flow is scattered after being reflected to the scattering wall to form a scattering flow, the scattering flow comprises a plurality of water droplets dispersed in the gas mixing cavity, the contact area between the scattering flow and the air in the gas mixing cavity is increased, the air is uniformly mixed in the water, and the bubbling effect of the water outlet is strengthened.

[0020] 2. The bubbling device comprises a buffer wall in the gas mixing cavity, the buffer wall is used for receiving the scattering flow, reducing the water flow speed, and increasing the contact time between the scattering flow and the air in the gas mixing cavity.

[0021] 3. The bubbling device comprises an arc-shaped scattering wall which protrudes towards the gas mixing cavity, the water flow which impacts the arc-shaped scattering wall is dispersed in the gas mixing cavity in the form of water droplets or small water flow, and the gas mixing effect is improved.

[0022] 4. The bubbling device comprises a push rod device, dirt accumulated on the water inlet surface is pushed along the guide surface to be discharged from the second water outlet through the second water outlet channel, without the need of arranging maintenance personnel to go to the user's home for maintenance, the user can complete the dirt removal process by himself, and the use cost of the user is reduced.

[0023] 5. The bubbling device further comprises an elastic member, when water flowing in is stopped, the second water inlet is automatically opened by the elastic force of the elastic member, the dirt remaining on the water inlet surface is automatically discharged from the second water outlet channel, the dirt is discharged every time water flowing in is stopped, and the additional operation of the user is reduced.

[0024] 6. The water outlet device has the scale-removable bubbler installed at the water outlet, which is hidden in the water outlet device and has a simple and elegant appearance. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 A schematic diagram of a foaming device of the present application;

[0027] Figure 2 An exploded view of a foaming device of the present application;

[0028] Figure 3 A filter screen schematic diagram of a foaming device of the present application;

[0029] Figure 4 A pressure stabilizing component schematic diagram of a foaming device of the present application;

[0030] Figure 5 A hydrophobic component schematic diagram of a foaming device of the present application;

[0031] Figure 6 A Figure 5 A-A sectional view in the middle;

[0032] Figure 7 A shell schematic diagram of a foaming device of the present application;

[0033] Figure 8 A shell sectional view of a foaming device of the present application;

[0034] Figure 9 A schematic diagram of a foaming device of the present application in the water inlet state;

[0035] Figure 10 A schematic diagram of a foaming device of the present application in the water stop state or under external force driving;

[0036] Figure 11 A Figure 6 A local enlarged view at A in the middle;

[0037] Figure 12 A Figure 9 A local enlarged view at B in the middle;

[0038] Figure 13 A schematic diagram of a water outlet device of the present application;

[0039] Figure 14 A sectional view of a water outlet device according to the present application;

[0040] In the figure, 10, a bubbling device; 20, a filter screen; 201, a guide surface; 30, a water repellent member; 301, a water distribution hole; 302, a convex part; 303, a scattering wall; 40, a housing; 401, an air inlet; 50, a pressure stabilizer; 501, a water passage hole; 502, a fixing part; 601, an upper guide rod; 6011, a cover; 602, a lower guide rod; 6021, a positioning convex part; 70, an elastic member; 801, a first water inlet; 802, a second water inlet; 901, a first water outlet; 902, a second water outlet; 1001, a water distribution cavity; 1002, a gas mixing cavity; 1101, a first annular wall; 1102, a second annular wall; 1103, a third annular wall; 1104, a fourth annular wall; 11041, a positioning guide groove; 1201, a first flow limiting channel; 1202, a second flow limiting channel; 130, a main flow limiting channel; 140, a water outlet device; 1401, a water outlet valve body. DETAILED DESCRIPTION

[0041] The present application will be described in detail below. Figures 1-14 The present application will be described in detail below.

[0042] A bubbling device 10 comprises a body, the body being provided with a first water inlet 801, a first water outlet 901, and a first water outlet flow channel connecting the first water inlet 801 and the first water outlet 901, the first water outlet flow channel comprising a water distribution cavity 1001 and a gas mixing cavity 1002 connected in sequence along the water flow direction, and the body being provided with an air inlet 401 connected to the gas mixing cavity 1002.

[0043] The water distribution cavity 1001 is connected to the gas mixing cavity 1002 through a plurality of water distribution holes 301, and the water distribution cavity 1001 is provided with a pressure stabilizer 50, a gap between the pressure stabilizer 50 and the body constituting a main flow limiting channel 130, and the pressure stabilizer 50 being elastically deformed based on the water inlet pressure, so as to adjust the water passage cross-sectional area of the main flow limiting channel 130.

[0044] The gas mixing cavity 1002 is provided with a reflecting wall and a scattering wall 303, and the water distribution holes 301 are directed towards the reflecting wall, so that the water flow emitted by the water distribution holes 301 is reflected by the reflecting wall to the scattering wall 303, and the water flow is scattered after being reflected to the scattering wall 303.

[0045] Therefore, after the inlet water flow is stabilized by the pressure stabilizer 50, it flows through the water distribution hole 301 and is divided into multiple water streams. As the multiple water streams flow from the water distribution chamber 1001 to the mixing chamber 1002, they collide with the reflective wall and the scattering wall 303. The reflective wall reflects the water stream ejected from the water distribution chamber 1001 to the scattering wall 303. After the water stream is reflected to the scattering wall 303, it forms a freely dispersed scattering flow. The scattering flow includes several water droplets dispersed in the mixing chamber 1002, which increases the contact area between the scattering flow and the air in the mixing chamber 1002, so that the air is evenly mixed in the water, and the foaming effect of the water output is enhanced.

[0046] In this embodiment, as Figure 2 As shown, the main body includes a housing 40 and a hydrophobic element 30 and a filter screen 20 installed within the housing 40. The space enclosed by the hydrophobic element 30 and the filter screen 20 constitutes a water-distributing chamber 1001, and the space enclosed by the housing 40 and the hydrophobic element 30 constitutes a gas-mixing chamber 1002. The housing 40 is provided with a first water outlet 901 and an air intake 401. The hydrophobic element 30 is provided with a plurality of water-distributing holes 301, and the filter screen 20 is provided with a first water inlet 801, which is composed of a plurality of filter holes. In addition, the surface of the hydrophobic element 30 located in the gas-mixing chamber 1002 is provided with an arc-shaped portion protruding toward the gas-mixing chamber 1002 and a first annular wall 1101 extending toward the gas-mixing chamber 1002. The first annular wall 1101 is located outside the arc-shaped portion, wherein the arc-shaped portion constitutes a scattering wall 303, and the first annular wall 1101 constitutes a reflecting wall, as shown. Figure 11 As shown, the water jet from the water distribution hole 301 impacts the reflector wall, which reflects the water jet back to the arc-shaped part. The protruding arc-shaped part can promote the water jet impacting the arc-shaped part to disperse into the air mixing chamber 1002 as particulate water droplets or fine water jets, thereby increasing the contact area between the water jet and the air and thus improving the air mixing effect.

[0047] In this embodiment, a pressure stabilizing component 50 is provided inside the water distribution cavity 1001. The gap between the pressure stabilizing component 50 and the water-draining component 30 forms the main flow-limiting channel 130. The water distribution cavity 1001 has a buffer space for the deformation of the pressure stabilizing component 50. Therefore, the pressure stabilizing component 50 undergoes elastic deformation based on the pressure of the incoming water, thereby adjusting the size of the cross-sectional area of ​​the main flow-limiting channel 130. Specifically, as shown... Figure 4 As shown, a fixing part 502 is provided on the outer ring of the pressure stabilizing component 50. The fixing part 502 is clamped between the filter screen 20 and the water-draining component 30, so that the other parts of the pressure stabilizing component 50 are arranged in a suspended state in the water distribution chamber 1001. The thickness of the fixing part 502 is smaller than that of the other parts of the pressure stabilizing component 50, so that the pressure stabilizing component 50 is easy to deform when impacted by water flow, thereby adjusting the water outlet cross-sectional area of ​​the main flow limiting channel 130. Specifically, the greater the water pressure, the greater the deformation of the pressure stabilizing component 50 and the smaller the water outlet cross-sectional area of ​​the main flow limiting channel; the lower the water pressure, the smaller the deformation of the pressure stabilizing component 50 and the larger the water outlet cross-sectional area of ​​the main flow limiting channel.

[0048] In the embodiment, the hydrophobic part 30 is provided with a second annular wall 1102 extending towards the filter screen 20, and the pressure stabilizer 50 is provided with a water passing hole 501. The pressure stabilizer 50 is sleeved outside the first annular wall 1101, and the gap between the water passing hole 501 and the first annular wall 1101 constitutes a first flow limiting channel 1201. The water passing sectional area of the first flow limiting channel 1201 is half of the water passing sectional area of the first water inlet 801, thereby increasing the flow rate of the water flow. Further, the bottom outer side of the first annular wall 1101 is provided with a plurality of convex parts 302 arranged along the circumferential axis at intervals. Each convex part 302 is located below the pressure stabilizer 50, and the radial dimension of the convex part 302 is greater than the radial dimension of the water passing hole 501, so that the pressure stabilizer 50 can abut against the upper end surface of the convex part 302 when the pressure stabilizer 50 is deformed by the impact of the water flow. The gap between the pressure stabilizer 50 and the upper end surface of the convex part 302 constitutes a main flow limiting channel 130, and the gap between each convex part 302 constitutes a second flow limiting channel 1202.

[0049] In the embodiment, the convex parts 302 are arranged in a uniform circumferential array, and the specific number thereof is 8. The second flow limiting channels 1202 formed thereby are also 8 in number. Similarly, the water distribution holes 301 are arranged in a uniform circumferential array around the first annular wall 1101, and the specific number thereof is 18. The number of the second flow limiting channels 1202 and the water distribution holes 301 can be increased or decreased according to actual conditions. Before the water flow enters the water distribution chamber, it first flows through the second flow limiting channels 1202 to separate the water flow into a plurality of fine flows, and then each fine flow is distributed by each water distribution hole 301 to flow into the gas mixing chamber. It can be understood that the water flow is first separated into 8 fine flows and then into 18 fine flows when flowing through the hydrophobic part 30. The number of distribution is gradually increased, the number of distribution is not too large at one time, the vortex ring of water is reduced, the water flow changes from a disordered and chaotic state to a relatively regular state, the flow rate of the water is slowed down, and the mixing effect of the fine flows with air in the gas mixing chamber is ensured.

[0050] When the water inlet pressure is less than the preset value, the pressure stabilizer 50 does not deform elastically, and the water inlet flow passes through the first flow limiting channel 1201, the second flow limiting channel 1202, and the main flow limiting channel 130 into the water distribution cavity 1001. When the water inlet flow pressure is greater than the preset value, the pressure stabilizer 50 deforms elastically, and the water passing cross-sectional area of the main flow limiting channel 130 gradually decreases until the pressure stabilizer 50 abuts against the upper end surface of the convex portion 302 to close the main flow limiting channel 130, and the water inlet flow passes through the first flow limiting channel 1201 and the second flow limiting channel 1202 in sequence, thereby stabilizing the water outlet flow of the first water outlet channel. In this embodiment, the preset value is 0.2 MPa, and a suitable preset value can also be adjusted according to actual use. Experiments have proved that the water outlet flow of the present frothing device 10 is stabilized at more than 3.5 L / min under 0.1-0.5 MPa, and the air suction hole 401 with a fixed aperture can adjust the water outlet and air ratio to 1:0.3 of the fixed air suction ratio of the frothing water, reduce the possibility of water splashing and air suction noise, and improve the user experience.

[0051] In this embodiment, as shown in Figures 9-10 , the buffer wall is arranged at a position below the scattering wall 303 in the gas mixing cavity 1002, and is used to receive the scattered flow, reduce the flow rate of the scattered flow, and increase the contact time of the scattered flow and air, so that the scattered flow and air are fully mixed. Specifically, the hydrophobic member 30 is provided with a third annular wall 1103 extending towards the housing 40, and the third annular wall 1103 and the inner side wall of the housing 40 form the buffer wall.

[0052] In this embodiment, as shown in Figure 3 , Figure 9 , and Figure 10 , the filter screen 20 is provided with a guide surface 201 recessed in the water outlet direction, the guide surface 201 is provided with a first water inlet 801, the lowest part of the guide surface 201 is provided with a second water inlet 802, the housing 40 is further provided with a second water outlet 902 and a second water outlet channel communicating the second water inlet 802 and the second water outlet 902, and a guide rod device is arranged in the second water outlet channel and can move in the axial direction of the second water outlet channel to close or open the second water inlet 802. By pushing the guide rod device, the dirt accumulated on the water inlet surface is discharged from the second water outlet 902 through the second water outlet channel along the guide surface 201, without the need to arrange maintenance personnel to go to the user's home for maintenance, and the user can complete the descaling process by himself, thereby reducing the user's use cost.

[0053] In this embodiment, an elastic member 70 is further included, as shown in Figures 9-10As shown, the elastic member 70 is sleeved outside the guide rod device, and one end of the elastic member 70 abuts against the guide rod device, and the other end of the elastic member 70 abuts against the body; when water is filled, the guide rod device is pressed to overcome the elastic force of the elastic member 70 to close the second water inlet 802; when water filling is stopped, the guide rod device is opened under the elastic force of the elastic member 70 to open the second water inlet 802. When water filling is stopped, the guide rod device is automatically opened by the elastic force of the elastic member 70 to make the dirt remaining on the water surface flow out of the second water outlet channel, that is, the dirt is discharged every time the water filling is stopped, reducing the additional operation of the user.

[0054] In the embodiment, as shown in the figure, Figure 7 As shown, the second water outlet 902 is provided with a fourth annular wall 1104 extending towards the filter screen 20, the third annular wall 1103 is sleeved outside the fourth annular wall 1104, and the internal space of the fourth annular wall 1104 is in communication with the second water inlet 802, thereby forming a second water outlet channel. The fourth annular wall 1104 is provided with a positioning guide groove 11041 extending in the water outlet direction, and the outer side surface of the guide rod device is provided with a positioning convex part 6021 slidingly fitted in the positioning guide groove 11041. Specifically, the number of the positioning guide groove and the positioning convex part 6021 is three. The radial dimension of the positioning convex part 6021 is greater than the radial dimension of the second water inlet 802, so as to prevent the guide rod device from being separated from the second water inlet 802 under the driving of the elastic force of the elastic member 70.

[0055] In the embodiment, as shown in the figure, Figures 9-10 As shown, the elastic member 70 is a compression spring, which is arranged in the gap between the third annular wall 1103 and the fourth annular wall 1104, and one end of the elastic member 70 abuts against the positioning convex part 6021, and the other end of the elastic member 70 abuts against the shell 40, thereby driving the guide rod device to move. Further, the guide rod device comprises an upper guide rod 601 and a lower guide rod 602 connected with each other, one end of the upper guide rod 601 is provided with a cover 6011 for closing the second water inlet 802, one end of the lower guide rod 602 protrudes out of the water surface, facilitating the user to push, and the positioning convex part 6021 is provided with the lower guide rod 602. Further, the cover 6011 is provided with a sealing surface matched with a guide surface 201 located at the edge of the hole of the second water inlet 802, so as to close the second water inlet 802, and the position where the guide surface 201 is matched with the sealing surface is not provided with the first water inlet 801, thereby improving the sealing effect of the sealing surface and the guide surface 201.

[0056] The principle of the foaming device 10 is as follows:

[0057] In the water filling state, as shown in the figure, Figure 9As shown, the guide rod device is under the action of water pressure to overcome the elastic force of the elastic member 70, and the sealing surface is sealed against the guide surface 201, thereby closing the second water inlet 802, and the water flow enters the water distribution cavity 1001 from the first water inlet 801. The water flow is divided into multiple water flows by the water distribution holes 301 during the flow from the water distribution cavity 1001 to the mixing cavity 1002, and the multiple water flows are reflected by the reflection wall and then hit the scattering part, forming a plurality of particle water droplets dispersed in the mixing cavity 1002. The contact area between the scattering flow and the air in the mixing cavity 1002 makes the air uniformly mixed in the water.

[0058] In the stop water inlet state, as shown, Figure 10 As shown, the guide rod device is under the action of the elastic force of the elastic member 70 to move upward, open the second water inlet 802, and make the dirt remaining on the surface of the filter screen 20 slide downward along the guide surface 201, and finally flow out of the frother through the second water outlet channel; or in the water inlet state, the guide rod device is pushed upward to open the second water inlet 802 to discharge the dirt, and at this time, the first water outlet channel and the second water outlet channel simultaneously discharge water.

[0059] The present application also provides a water outlet device 140, as shown, Figures 12-14 As shown, the water outlet device 140 includes a water outlet valve body 1401, and the water outlet of the water outlet valve body 1401 is provided with the frothing device 10 as described above. Specifically, the shell 40 is threadedly connected to the water outlet, so that the frothing device 10 is hiddenly installed in the water outlet device 140, and the whole is fashionable and beautiful.

[0060] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A lathering device comprising a body, characterized in that, The body is provided with a first water inlet, a first water outlet and a first water outlet flow channel connecting the first water inlet and the first water outlet, the first water outlet flow channel includes a water distribution cavity and a gas mixing cavity connected in sequence along the water flow direction, and the body is provided with an air inlet hole connected to the gas mixing cavity; The water distribution cavity is connected to the gas mixing cavity through a plurality of water distribution holes, and a pressure stabilizing piece is arranged in the water distribution cavity, a gap between the pressure stabilizing piece and the body constitutes a main flow limiting channel, and the pressure stabilizing piece is elastically deformed based on the pressure of the water inlet, so as to adjust the water passing cross-sectional area of the main flow limiting channel; The gas mixing cavity is provided with a reflection wall and a scattering wall, the water outlet direction of the water distribution hole is towards the reflection wall, so that the water flow emitted by the water distribution hole is reflected to the scattering wall by the reflection wall, and the water flow reflected to the scattering wall forms a scattering flow which is freely scattered.

2. A frothing device as claimed in claim 1, characterised in that A buffer wall is arranged at a position below the scattering wall in the gas mixing cavity, and the buffer wall is used for receiving the scattering flow and reducing the flow rate of the scattering flow.

3. A frothing device as claimed in claim 2, wherein the air inlet is located in the base of the chamber. The body includes a shell, a hydrophobic piece and a filter screen which are sequentially arranged in the shell, a space surrounded by the hydrophobic piece and the filter screen constitutes the water distribution cavity, a space surrounded by the shell and the hydrophobic piece constitutes the gas mixing cavity, the shell is provided with the first water outlet and the air inlet hole, the hydrophobic piece is provided with a plurality of water distribution holes, a surface of the hydrophobic piece in the gas mixing cavity is provided with an arc-shaped portion protruding towards the gas mixing cavity and a first annular wall extending towards the gas mixing cavity, the first annular wall is located outside the arc-shaped portion, the arc-shaped portion constitutes the scattering wall, the first annular wall constitutes the reflection wall, and filter holes of the filter screen constitute the first water inlet.

4. A frothing device as claimed in claim 3, wherein the air inlet is located in the base of the chamber. The hydrophobic piece is provided with a second annular wall extending towards the filter screen, the pressure stabilizing piece is provided with a water passing hole, the pressure stabilizing piece is sleeved outside the second annular wall, and a gap between the water passing hole and the second annular wall constitutes a first flow limiting channel.

5. A frothing device as claimed in claim 4, wherein the air inlet is located in the base of the chamber. The second annular wall is provided with a plurality of convex portions arranged at intervals along the circumferences of the axis, the convex portions are located below the pressure stabilizing piece, and the radial dimension of the convex portions is greater than the radial dimension of the water passing hole, a gap between the pressure stabilizing piece and the convex portions constitutes the main flow limiting channel, and a gap between the convex portions constitutes a second flow limiting channel.

6. A frothing device as claimed in claim 5, characterised in that When the water inlet pressure is less than a preset value, the pressure stabilizing piece is not elastically deformed, and the water inlet flow passes through the first flow limiting channel, the main flow limiting channel and the second flow limiting channel; when the water inlet flow pressure is greater than the preset value, the pressure stabilizing piece is elastically deformed, the water passing cross-sectional area of the main flow limiting channel gradually decreases, until the pressure stabilizing piece abuts against the upper end surface of the convex portion to close the main flow limiting channel, and the water inlet flow passes through the first flow limiting channel and the second flow limiting channel.

7. A frothing device as claimed in claim 3, wherein The hydrophobic piece is provided with a third annular wall extending towards the shell, and the third annular wall and the inner side wall of the shell constitute the buffer wall.

8. A frothing device as claimed in claim 3, characterised in that The filter screen is provided with a guide surface recessed towards the water outlet direction, the guide surface is provided with the first water inlet, the lowest part of the guide surface is provided with a second water inlet, the shell is further provided with a second water outlet and a second water outlet channel communicating the second water inlet and the second water outlet, the second water outlet channel is provided with a guide rod device, the guide rod device is movable along the axial direction of the second water outlet channel to close or open the second water inlet.

9. A frothing device as claimed in claim 8, characterised in that Further comprising an elastic member, the elastic member is sleeved outside the guide rod device, one end of the elastic member abuts against the guide rod device, and the other end of the elastic member abuts against the body; when water is filled, the guide rod device is pressed to overcome the elastic force of the elastic member to close the second water inlet; when water filling is stopped, the guide rod device is opened under the elastic force of the elastic member to open the second water inlet.

10. A water outlet device comprising a water outlet valve body, characterized in that The water outlet of the water outlet valve body is provided with the bubbling device as claimed in any one of claims 1-9, and the bubbling device is installed at the water outlet of the water outlet valve body.

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