Water outlet device

Abstract

The utility model discloses a water outlet device which comprises a main body, the main body comprises a water inlet part and a second cavity, an overflowing hole is formed between the water inlet part and the second cavity, a step part is arranged in the second cavity, the step part comprises a plurality of steps, and the overflowing hole is opposite to at least one step in position; the water flow is fully decelerated by the step part, the speed of the water flow sprayed by the main body is reduced, and the splash-proof effect is achieved; the water outlet device is simple in overall structure and good in splash-proof effect, and the blocking risk caused by the adoption of a filter screen buffering structure in the prior art does not exist.

Description

TECHNICAL FIELD

[0001] The utility model relates to faucet technical field, in particular to a water outlet device. BACKGROUND

[0002] The existing splash-proof faucet generally sets up filter screen structure in the inside to buffer water to reach the effect of preventing splashing in order to reach the effect of preventing splashing. However, the faucet is prone to blockage due to water quality or long-term use and the like after long-term use, and has low service life. Some splash-proof faucets are internally installed with many assembly parts, which leads to complex internal structure, difficult installation and disassembly, and high manufacturing cost. SUMMARY

[0003] The utility model discloses at least one of the above technical problems in the prior art is solved to some extent. To this end, the utility model provides a water outlet device.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] According to the water outlet device of the first aspect embodiment of the utility model, the main body includes the water inlet part and the second cavity, the overflow hole is arranged between the water inlet part and the second cavity, the stepped portion is arranged in the second cavity, the stepped portion includes a plurality of steps, and the overflow hole is opposite to at least one step position.

[0006] According to the water outlet device of the utility model embodiment, at least has the following beneficial effects: the water flow is fully decelerated by the stepped portion, the water flow speed of the main body is reduced, and the effect of preventing splashing is achieved; the overall structure of the water outlet device is simple, the splash-proof effect is good, and there is no risk of blockage of the filter screen buffer structure in the prior art.

[0007] According to some embodiments of the utility model, the water inlet part and the second cavity are separated by a partition plate, a conical flow guide cavity gradually narrowing away from the partition plate is arranged in the second cavity, the stepped portion is arranged between the partition plate and the flow guide cavity and is arranged circumferentially along the inner wall of the second cavity, the small-diameter end of the flow guide cavity is the water outlet end, and at least two overflow holes are distributed circumferentially on the partition plate.

[0008] According to some embodiments of the utility model, the water outlet direction of the overflow hole and the axial direction of the flow guide cavity form an exit angle of an acute angle, and the water flow forms a cyclone after flowing into the second cavity from each overflow hole.

[0009] According to some embodiments of the utility model, the main body is further provided with a third cavity, the third cavity is communicated with the second cavity through the water outlet end, one side of the third cavity opposite to the water outlet end is a water baffle, a plurality of water outlets are arranged on the water baffle, and each water outlet is distributed in the projection area of the water baffle around the water outlet end.

[0010] According to some embodiments of the utility model, the middle part of the partition plate is conically raised towards the water inlet part, each flow hole is sequentially distributed around the raised part of the partition plate, the water inlet part comprises a first cavity and a Venturi channel, the Venturi channel is arranged on the side of the first cavity away from the second cavity, and the Venturi channel sprays water towards the raised part of the partition plate.

[0011] According to some embodiments of the utility model, the minimum inner diameter of the inner side wall of the stepped part is not less than the maximum inner diameter of the flow guide cavity.

[0012] According to some embodiments of the utility model, the stepped part comprises a first layer and a second layer which are distributed in steps from outside to inside along the radial direction of the second cavity, the first layer and the second layer are arranged along the circumferential direction of the second cavity, a plurality of steps are arranged on the first layer and the second layer, each flow hole is opposite to at least one step on the first layer and at least one step on the second layer, and one of the steps of the first layer and the steps of the second layer is closer to the flow hole than the other.

[0013] According to some embodiments of the utility model, the stepped part further comprises a third layer, the second layer and the third layer are distributed in steps from outside to inside along the radial direction of the second cavity, the third layer is arranged along the circumferential direction of the second cavity, a plurality of steps are arranged on the third layer, and the second layer is closer to the flow hole than the third layer.

[0014] According to some embodiments of the utility model, the step comprises a first flow resistance surface, a second flow resistance surface and a third flow resistance surface, the flow hole is towards the first flow resistance surface, the first flow resistance surface is connected between the second flow resistance surface and the third flow resistance surface, the first flow resistance surface is arranged to be inclined, the second flow resistance surface is connected on the side of the first flow resistance surface close to the flow hole, the third flow resistance surface is connected on the side of the first flow resistance surface away from the flow hole, the third flow resistance surface of one of the two adjacent steps in the same layer is connected with the second flow resistance surface of the other.

[0015] According to some embodiments of the utility model, the water outlet direction of the flow hole is perpendicular to the first flow resistance surface.

[0016] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a front view of the present application;

[0019] Figure 2 is an A-direction sectional view of Figure 1 ;

[0020] Figure 3 is a B-direction sectional view of Figure 1 ;

[0021] Figure 4 is a schematic view of the relative position of the flow hole and the step;

[0022] Figure 5 is another embodiment schematic view of Figure 3 ;

[0023] Reference signs: main body 100; water inlet part 110; first cavity 111; second cavity 120; flow guide cavity 121; water outlet end 122; flow hole 130; emission angle 131; third cavity 140; water baffle 150; water outlet hole 151; stepped part 200; first layer 201; second layer 202; third layer 203; step 210; first flow resistance surface 211; second flow resistance surface 212; third flow resistance surface 213; partition plate 300; Venturi channel 400. DETAILED DESCRIPTION

[0024] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0025] The present application relates to a water outlet device, comprising a main body 100. Wherein, the water outlet device is mainly applied to faucet products. It can also be applied to other water products such as spray heads.

[0026] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the main body 100 can be provided in a cylindrical shape, and the main body 100 includes a water inlet portion 110 and a second cavity 120. The water inlet portion 110 is mainly used to connect an external water supply system to supply water to the second cavity 120. In this embodiment, the water inlet portion 110 includes a first cavity 111. The first cavity 111 and the second cavity 120 are provided with flow holes 130, and the flow holes 130 can be provided with one, two, three or more flow holes 130, and the flow holes 130 communicate the first cavity 111 and the second cavity 120. The second cavity 120 is provided with a stepped portion 200, and the stepped portion 200 includes a plurality of steps 210. Each flow hole 130 is located opposite to one, two or more steps 210, that is, each flow hole 130 is located opposite to at least one step 210. The stepped portion 200 can be integrally formed in the second cavity 120, and does not need to be independently installed, thereby simplifying the assembly process; or the stepped portion 200 can be installed in the second cavity 120 as an independent component, and different stepped portions 200 can be used according to needs to cooperate with the flow holes 130. When at least two flow holes 130 are provided, water enters from the first cavity 111 and is dispersed into a plurality of water streams by the flow holes 130 and is injected into the second cavity 120. Each water stream is injected onto a corresponding step 210 in the second cavity 120, and the water stream is slowed down by the step 210. According to the position distribution of the steps 210 on the stepped portion 200, each water stream can impact one, two or more steps 210 after being injected from the flow hole 130, and the water stream is slowed down by the step 210 directly impacted by the water stream; or the water stream can be initially slowed down by corresponding impact on one step 210, and then flows to another step 210 to be gradually slowed down by a plurality of steps 210. Each water stream is slowed down by the stepped portion 200 and is re-converged in the second cavity 120, and then continues to flow downstream of the main body 100 and is injected. The water stream is sufficiently slowed down by the stepped portion 200, and the water stream injected from the main body 100 is slowed down to achieve the effect of preventing splashing. The overall structure of the water outlet device is simple, the effect of preventing splashing is good, and there is no risk of blockage of the filter screen buffer structure in the prior art.

[0027] In an embodiment, as Figure 1 and Figure 2As shown in the drawing, the body 100 is provided with a partition plate 300, which separates the interior of the body 100 into a first cavity 111 and a second cavity 120 distributed in an upper and lower manner. The partition plate 300 can be a circular plate. The second cavity 120 is provided with a flow guide cavity 121, which is in an inverted conical shape and gradually narrows in a direction away from the partition plate 300. That is, the partition plate 300 is located above the flow guide cavity 121, the upper end of the flow guide cavity 121 is a large-diameter end, and the lower end is a small-diameter end. The stepped portion 200 is located between the large-diameter end of the flow guide cavity 121 and the partition plate 300 and is arranged on the circumferential inner wall of the second cavity 120. The stepped portion 200 is arranged in a circular ring shape in the second cavity 120. The small-diameter end (lower end) of the flow guide cavity 121 is a water outlet end 122. A plurality of overflow holes 130 are arranged on the partition plate 300 and are distributed in a circumferential direction of the partition plate 300. The water entering the first cavity 111 is dispersed to each overflow hole 130 along the partition plate 300, and then the water enters the second cavity 120 through each overflow hole 130. According to the distribution position of the overflow hole 130, each water flow entering the second cavity 120 is distributed in the circumferential direction of the second cavity 120 and then impacts on each step 210. After the water flow passes through the stepped portion 200, it converges to the flow guide cavity 121, and the flow guide cavity 121 rectifies each water flow. After rectification, the water flow can maintain a complete water shape when it is discharged from the second cavity 120 through the water outlet end 122 of the flow guide cavity 121.

[0028] Based on the above embodiment, as shown in the drawing, Figure 4 The water outlet direction of each overflow hole 130 forms an exit angle 131 with the axial direction of the flow guide cavity 121 to the small-diameter end, which is an acute angle. In the drawing direction, the axial direction of the flow guide cavity 121 to the small-diameter end is a vertical direction from top to bottom, and the exit angle 131 of each overflow hole 130 is inclined downward. Each overflow hole 130 is inclined toward the same direction around the central axis of the second cavity 120, and the water flow passing through each overflow hole 130 will flow into the second cavity 120 in the same direction, then form a rotational flow in the second cavity 120, which adheres to the side wall of the second cavity 120 and flows in a clockwise or counterclockwise direction. After the water flow is slowed down by the stepped portion 200, the overall water flow direction in the second cavity 120 still tends to flow in a clockwise or counterclockwise direction, and the tapered structure of the flow guide cavity 121 has a good effect on the rectification of the water flow. Further, the minimum inner diameter of the inner side wall of the stepped portion 200 is not less than the maximum inner diameter of the flow guide cavity 121. It can be understood that the inner side wall of the stepped portion 200 can be arranged in a cylindrical shape, the inner side wall of the stepped portion 200 can be flush with the large-diameter end of the flow guide cavity 121, or the minimum inner diameter of the inner side wall of the stepped portion 200 is greater than the diameter of the large-diameter end of the flow guide cavity 121. When the water slows down through the stepped portion 200, most of the water flows along the inner side wall of the stepped portion 200 to the side wall of the flow guide cavity 121 under the action of the rotational flow, which can avoid most of the water directly falling to the water outlet end 122 without rectification.

[0029] The main body 100 can be configured to allow water to flow directly out of the second chamber 120, or the downstream side of the second chamber 120 can be connected to an external water spray component for drainage. In this embodiment, as shown... Figure 1 As shown, the main body 100 also includes a third cavity 140. In the illustrated direction, the third cavity 140 is located below the second cavity 120, and is connected to the second cavity 120 via a water outlet 122. The side (lower side) of the third cavity 140 opposite to the water outlet 122 is a baffle plate 150. The baffle plate 150 has several water outlet holes 151. Each water outlet hole 151 is distributed around the projection area of ​​the water outlet 122 on the baffle plate 150; that is, in the top view shown in the illustration, each water outlet hole 151 is distributed around the projection area of ​​the water outlet 122 of the second cavity 120 on the baffle plate 150. Because the water forms a swirling flow in the second chamber 120, after being ejected from the outlet 122 of the second chamber 120, the water will disperse in all directions around the third chamber 140 under the centrifugal force of the swirling flow. Most of the water falls directly to the location of each outlet 151 and is discharged from each outlet 151, while a small portion of the water impacts the baffle plate 150. This ensures the integrity of the water pattern when the water is discharged from each outlet 151.

[0030] Based on any of the above embodiments, such as Figure 1 As shown, the middle of the upper side of the baffle 300 protrudes in a conical shape towards the first cavity 111. Various flow holes 130 are sequentially distributed around the protrusion of the baffle 300. The water inlet 110 also includes a Venturi channel 400. A Venturi channel 400 is provided on the side of the first cavity 111 away from the second cavity 120, and the Venturi channel 400 sprays water towards the protrusion of the baffle 300. Preferably, the Venturi channel 400 faces the tip of the protrusion. An external water supply system is connected to the Venturi channel 400. When water flows through the Venturi channel 400, a negative pressure is created, drawing in external air to mix with the water and form aerated water. The aerated water is sprayed from the Venturi channel 400 into the first cavity 111 and then impacts the protrusion of the baffle 300. The aerated water impacting the protrusion disperses and flows circumferentially along the protrusion to each flow hole 130. After the sparkling water flows into the second chamber 120 through the flow hole 130, the stepped section 200 can further disperse the bubbles in the sparkling water, making the bubbles finer and improving the cleaning ability and splash-proof effect of the sparkling water.

[0031] In some embodiments, such as Figure 3As shown, the stepped portion 200 includes a first layer 201 and a second layer 202. The first layer 201 and the second layer 202 are stepped along the radial direction of the second cavity 120, i.e. the second layer 202 is closer to the central axis of the second cavity 120 than the first layer 201. The first layer 201 and the second layer 202 both extend along the circumferential direction of the second cavity 120 in a circular ring shape. The first layer 201 and the second layer 202 are both provided with a plurality of steps 210. Each flow hole 130 is opposite to at least one step 210 on the first layer 201 and at least one step 210 on the second layer 202. One of the steps 210 on the first layer 201 and the steps 210 on the second layer 202 is closer to the flow hole 130 than the other. For example, as shown in FIG. 2, the steps 210 on the first layer 201 are higher than the steps 210 on the second layer 202. Alternatively, as shown in FIG. 3, the steps 210 on the second layer 202 are higher than the steps 210 on the first layer 201. Figure 3 As shown, in the shown direction, the steps 210 on the first layer 201 are higher than the steps 210 on the second layer 202. Alternatively, as shown in FIG. 3, the steps 210 on the second layer 202 are higher than the steps 210 on the first layer 201. Figure 5 As shown, in the shown direction, the steps 210 on the first layer 201 are higher than the steps 210 on the second layer 202. Alternatively, as shown in FIG. 3, the steps 210 on the second layer 202 are higher than the steps 210 on the first layer 201. As shown, in the shown direction, the steps 210 on the first layer 201 are higher than the steps 210 on the second layer 202. Alternatively, as shown in FIG. 3, the steps 210 on the second layer 202 are higher than the steps 210 on the first layer 201.

[0032] Based on the above embodiments, as shown in FIG. 4, the stepped portion 200 includes a first layer 201 and a second layer 202. The first layer 201 and the second layer 202 are stepped along the radial direction of the second cavity 120, i.e. the second layer 202 is closer to the central axis of the second cavity 120 than the first layer 201. The first layer 201 and the second layer 202 both extend along the circumferential direction of the second cavity 120 in a circular ring shape. The first layer 201 and the second layer 202 are both provided with a plurality of steps 210. Each flow hole 130 is opposite to at least one step 210 on the first layer 201 and at least one step 210 on the second layer 202. One of the steps 210 on the first layer 201 and the steps 210 on the second layer 202 is closer to the flow hole 130 than the other. For example, as shown in FIG. 4, the steps 210 on the first layer 201 are higher than the steps 210 on the second layer 202. Alternatively, as shown in FIG. 5, the steps 210 on the second layer 202 are higher than the steps 210 on the first layer 201. Figure 3As shown, the stepped portion 200 further comprises a third layer 203. The second layer 202 and the third layer 203 are distributed in a stepped manner along the radial direction of the second cavity 120. That is, the third layer 203 is closer to the central axis of the second cavity 120 than the second layer 202, and the second layer 202 is located between the first layer 201 and the third layer 203. The third layer 203 is arranged along the circumferential direction of the second cavity 120, and a plurality of steps 210 are arranged on the third layer 203. The second layer 202 is closer to the flow hole 130 than the third layer 203, that is, the step 210 of the second layer 202 is higher than the step 210 of the third layer 203 in the direction shown in the figure. The water flow is slowed down along the steps 210 of the first layer 201 and the second layer 202, and then buffered and slowed down again on the steps 210 of the third layer 203.

[0033] In some embodiments of the present application, as shown in Figure 3 and Figure 4 As shown, the step 210 comprises a first flow resistance surface 211, a second flow resistance surface 212 and a third flow resistance surface 213. The flow hole 130 is directed towards the first flow resistance surface 211, and the first flow resistance surface 211 is connected between the second flow resistance surface 212 and the third flow resistance surface 213. The first flow resistance surface 211 is arranged obliquely, the second flow resistance surface 212 is connected to one side of the first flow resistance surface 211 close to the flow hole 130, and the third flow resistance surface 213 is connected to the other side of the first flow resistance surface 211 away from the flow hole 130. In the direction shown in the figure, the first flow resistance surface 211 has two sides with relative height distribution, the second flow resistance surface 212 is connected to the relatively higher side of the first flow resistance surface 211, and the third flow resistance surface 213 is connected to the relatively lower side of the first flow resistance surface 211. The second flow resistance surface 212 can be arranged obliquely or vertically. The third flow resistance surface 213 can be arranged horizontally or obliquely. Between two adjacent steps 210 in the same layer, the third flow resistance surface 213 of one step 210 is connected to the second flow resistance surface 212 of the other step 210. The water flow of the flow hole 130 impacts on the first flow resistance surface 211, and the first flow resistance surface 211 plays a major role in buffering and slowing down the water flow. Then a part of the water flow will flow along the first flow resistance surface 211 and the third flow resistance surface 213, and after flowing to the side of the third flow resistance surface 213 away from the first flow resistance surface 211, the water flow will impact on the second flow resistance surface 212 of the adjacent (next) step 210 in the same layer, and will be further slowed down by the second flow resistance surface 212, and then flow out of the current step 210 to the step 210 in the next layer. Part of the water impacting on the first flow resistance surface 211 will rebound, and under the influence of the flow direction of the water of the flow hole 130, the water flow will fall back between the second flow resistance surface 212 of the step 210 and the third flow resistance surface 213 of the adjacent (previous) step 210 in the same layer, and will be slowed down. Preferably, the water outlet direction of the flow hole 130 is perpendicular to the first flow resistance surface 211, and at this time the first flow resistance surface 211 has the best flow resistance effect on the water sprayed by the flow hole 130.

[0034] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0036] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the specification, the description referring to the terms "some embodiments", and the like, means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0039] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A water outlet device, characterized by: The application relates to a water purifier, which comprises a main body (100), a water inlet part (110) and a second cavity (120), wherein a flow hole (130) is arranged between the water inlet part (110) and the second cavity (120), a stepped part (200) is arranged in the second cavity (120), the stepped part (200) comprises a plurality of steps (210), and the flow hole (130) is opposite to at least one step (210).

2. The water outlet device according to claim 1, characterized in that: The water inlet part (110) and the second cavity (120) are separated by a partition plate (300), a conical flow guide cavity (121) gradually reducing in the direction away from the partition plate (300) is arranged in the second cavity (120), the stepped part (200) is arranged between the partition plate (300) and the flow guide cavity (121) and is arranged along the inner wall of the second cavity (120) in the circumferential direction, the small-diameter end of the flow guide cavity (121) is a water outlet end (122), and at least two flow holes (130) are distributed in the circumferential direction on the partition plate (300).

3. The water outlet device according to claim 2, characterized in that: The water outlet direction of the flow hole (130) and the axial direction of the flow guide cavity (121) form an acute exit angle (131), and the water flow forms a cyclone after flowing into the second cavity (120) from each flow hole (130).

4. The water outlet device according to claim 3, characterized in that: The main body (100) is further provided with a third cavity (140), the third cavity (140) is communicated with the second cavity (120) through the water outlet end (122), the side, opposite to the water outlet end (122), of the third cavity (140) is a water baffle (150), a plurality of water outlet holes (151) are arranged on the water baffle (150), and each water outlet hole (151) is distributed around the projection area of the water outlet end (122) on the water baffle (150).

5. The water outlet device according to any one of claims 2 to 4, characterized in that: The middle part of the partition plate (300) is conically protruded towards the water inlet part (110), each flow hole (130) is distributed around the protruded part of the partition plate (300) in sequence, the water inlet part (110) comprises a first cavity (111) and a Venturi channel (400), the Venturi channel (400) is arranged on the side, away from the second cavity (120), of the first cavity (111), and the Venturi channel (400) sprays water towards the protruded part of the partition plate (300).

6. The water outlet device according to any one of claims 2 to 4, characterized in that: The minimum inner diameter of the inner side wall of the stepped part (200) is not less than the maximum inner diameter of the flow guide cavity (121).

7. The water outlet device according to any one of claims 1 to 4, characterized in that: The stepped portion (200) comprises a first layer (201) and a second layer (202) which are stepped from outside to inside along the radial direction of the second cavity (120), the first layer (201) and the second layer (202) are arranged along the circumferential direction of the second cavity (120), and a plurality of steps (210) are arranged on the first layer (201) and the second layer (202), each flow hole (130) is opposite to at least one step (210) on the first layer (201) and at least one step (210) on the second layer (202), and one of the steps (210) on the first layer (201) and the steps (210) on the second layer (202) is closer to the flow hole (130) than the other.

8. The water outlet device according to claim 7, characterized in that: The stepped portion (200) further comprises a third layer (203), the second layer (202) and the third layer (203) are stepped from outside to inside along the radial direction of the second cavity (120), the third layer (203) is arranged along the circumferential direction of the second cavity (120), and a plurality of steps (210) are arranged on the third layer (203), and the second layer (202) is closer to the flow hole (130) than the third layer (203).

9. The water outlet device according to claim 7, characterized in that: The step (210) comprises a first flow resistance surface (211), a second flow resistance surface (212) and a third flow resistance surface (213), the flow hole (130) is directed to the first flow resistance surface (211), the first flow resistance surface (211) is connected between the second flow resistance surface (212) and the third flow resistance surface (213), the first flow resistance surface (211) is arranged obliquely, the second flow resistance surface (212) is connected to one side of the first flow resistance surface (211) close to the flow hole (130), the third flow resistance surface (213) is connected to one side of the first flow resistance surface (211) away from the flow hole (130), and between two adjacent steps (210) in the same layer, the third flow resistance surface (213) of one is connected to the second flow resistance surface (212) of the other.

10. The water outlet device according to claim 9, characterized in that: The water outlet direction of the flow hole (130) is perpendicular to the first flow resistance surface (211).

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