Water outlet device

Abstract

The present application belongs to the technical field of water outlet device, and discloses a water outlet device, which comprises a shell provided with an inner cavity; a water inlet part is installed in the inner cavity and is provided with a plurality of water inlet channels; a water passing part is installed in the inner cavity and is located on the downstream side of the water inlet part, a negative pressure cavity is defined between the water inlet part and the water passing part, an air inlet cavity is defined between the peripheral wall of the water passing part and the shell, the water passing part is provided with a plurality of water passing channels, a plurality of air return holes and a plurality of air inlet through holes, the water inlet channels and the water passing channels are one-to-one aligned, each air inlet through hole is arranged on the peripheral side of the region where each water passing channel is located, and the positions of at least part of the air return holes are located between the air inlet through holes and the water passing channels; a cutting assembly is installed in the inner cavity and is located on the downstream side of the water passing part; when water pressure fluctuation occurs and water in the negative pressure cavity attempts to leak out from the air inlet through hole, the bubble curtain will disturb the water flow flowing in the direction of the air inlet through hole in the negative pressure cavity, increase the resistance to the water flow, and effectively prevent the water from leaking out through the air inlet through hole.

Description

Technical Field

[0001] This invention relates to the field of water outlet equipment technology, and in particular to a water outlet device. Background Technology

[0002] Some existing kitchen aerators utilize the internal Venturi effect to draw in outside air by creating negative pressure as water flows. The air and water mix and then undergo shearing to form aerated water. However, during use, it has been found that fluctuations in the water supply system can cause water to leak out through the air inlet. This water ingress prevents air from entering the air inlet, hindering the proper generation of aerated water and affecting the aerator's normal operation. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a water outlet device.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A water outlet device according to a first aspect embodiment of the present invention includes:

[0006] The housing has an internal cavity;

[0007] A water inlet component is installed in the inner cavity and has several water inlet channels.

[0008] A water-passing component is installed in the inner cavity and located downstream of the water inlet component. A negative pressure cavity is defined between the water inlet component and the water-passing component. An air inlet cavity is defined between the peripheral wall of the water-passing component and the housing. The water-passing component is provided with a plurality of water passages, a plurality of air return holes and a plurality of air inlet holes. The water inlet channels and the water passages are aligned one-to-one. The negative pressure cavity and the air inlet cavity are connected through the air inlet holes. When the liquid flows along the water inlet channels, the negative pressure cavity and the water passages, a Venturi effect can be generated to form a negative pressure in the negative pressure cavity. Along the central axis of the water-passing component towards its periphery, the air inlet holes are arranged on the outer side of the area where each water passage is located. At least a portion of the air return holes are located between the air inlet holes and the water passages.

[0009] A cutting assembly is installed in the inner cavity and located downstream of the water passage component, and the cutting assembly is provided with a plurality of cutting holes.

[0010] The water outlet device according to the embodiments of the present invention has at least the following beneficial effects: when the water pressure fluctuates as the water is delivered to the inner cavity by the faucet, and water in the negative pressure cavity attempts to leak out through the air inlet, the bubble curtain will disrupt the water flow in the negative pressure cavity toward the air inlet, increase the resistance to the water flow, and effectively prevent water from leaking out through the air inlet.

[0011] According to some embodiments of the present invention, each of the air inlet holes is disposed on the peripheral wall of the water passage component, and the direction of fluid ejection from the air inlet hole into the negative pressure chamber is perpendicular to the direction of fluid ejection from the return air hole into the negative pressure chamber.

[0012] According to some embodiments of the present invention, the direction of fluid ejection from the water inlet channel into the negative pressure chamber is parallel to the direction of fluid ejection from the air return hole into the negative pressure chamber.

[0013] According to some embodiments of the present invention, the return air hole is cylindrical, or the return air hole is tapered with an inner diameter that gradually decreases toward the negative pressure chamber.

[0014] According to some embodiments of the present invention, a portion of the air return hole is a first hole, and a plurality of protrusions are provided on the periphery of the water passage, which are arranged in sequence at intervals. The interval between two adjacent protrusions constitutes the air inlet hole. The first hole is provided on the path from the air inlet hole to the negative pressure chamber in the emission direction. The first hole is closer to the air inlet hole than the water passage.

[0015] According to some embodiments of the present invention, a portion of the air return hole is a second hole, and a second hole is provided between two adjacent first holes along the circumference of the water passage component, and the second hole is aligned with the boss one-to-one.

[0016] According to some embodiments of the present invention, a portion of the air return holes are third holes, and a plurality of the third holes are distributed around the water passage, wherein the third holes are closer to the water passage than the first holes.

[0017] According to some embodiments of the present invention, the cutting assembly includes a filter screen and at least two partitions, the partitions being located between the filter screen and the water passage component. The filter screen is provided with a plurality of cutting holes. The partitions are arranged in a stacked manner along the ejection direction of the fluid jet from the water passage. The partitions are provided with a plurality of ribs, and a plurality of grid holes are formed between the ribs. Between two adjacent partitions, a portion of the rib on one partition is aligned with the grid hole on the other partition, and the rib does not completely cover the grid hole.

[0018] According to some embodiments of the present invention, the rib includes a first rib and a second rib, a plurality of first ribs extending radially outward from the center of the partition, and a second rib surrounding the center of the partition and connected in a ring to each of the first ribs, and a plurality of second ribs being distributed sequentially along the radial direction of the partition, and each joint of the first rib and the second rib on one partition being opposite to the grid hole on the adjacent partition.

[0019] According to some embodiments of the present invention, a rectifier is further included, which is installed in the inner cavity and located downstream of the cutting assembly, and the rectifier is provided with a plurality of honeycomb-shaped rectifier holes.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is an exploded view of the water outlet device.

[0023] Figure 2 This is a cross-sectional view of the water outlet device;

[0024] Figure 3 yes Figure 2 A schematic diagram of fluid flow direction;

[0025] Figure 4 This is a structural diagram of the water inlet component;

[0026] Figure 5 This is a structural schematic diagram of the water passage component;

[0027] Figure 6 yes Figure 5 Top view;

[0028] Figure 7 This is an assembly diagram of each partition;

[0029] Figure 8 yes Figure 7 Top view.

[0030] Reference numerals: 100 for housing; 110 for inner cavity; 120 for negative pressure cavity; 130 for air inlet cavity; 140 for cavity; 200 for water inlet component; 210 for water inlet channel; 300 for water passage component; 310 for water passage channel; 320 for air return hole; 321 for first hole; 322 for second hole; 323 for third hole; 330 for air inlet vent; 340 for boss; 350 for first region; 400 for cutting assembly; 410 for filter screen; 411 for cutting hole; 420 for partition plate; 421 for grid hole; 430 for rib; 431 for first rib; 432 for second rib; 500 for rectifier component; 510 for rectifier hole. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The present invention relates to a water outlet device, comprising a housing 100, a water inlet 200, a water outlet 300, and a cutting assembly 400.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the housing 100 can be cylindrical. In the direction shown, the interior of the housing 100 is an inner cavity 110 with openings at both the upper and lower ends. The upper end of the inner cavity 110 is the upstream end, and the lower end is the downstream end. The water inlet component 200, the water passage component 300, and the cutting assembly 400 are installed sequentially from top to bottom within the inner cavity 110. The main body of the water inlet component 200 can be a circular plate. The thickness direction of the water inlet component 200 is vertical. The water inlet component 200 has several water inlet channels 210, which penetrate the water inlet component 200 vertically. The water inlet channels 210 are arranged in parallel. The water passage component 300 is located downstream of the water inlet component 200, with a certain gap between them, forming a negative pressure chamber 120. The lower end of each water inlet channel 210 connects to the negative pressure chamber 120. There is a certain gap between the circumferential sidewall of the water passage component 300 and the inner wall of the inner cavity 110, forming an air intake chamber 130. One end of the air intake chamber 130 is connected to the outside of the housing 100, and the other end is connected to the negative pressure chamber 120 through each air intake hole 330. The water passage 310 runs vertically through the water passage component 300, and each water passage 310 is positioned opposite to the water intake channel 210, that is, a water passage 310 is provided directly below each water intake channel 210. In the direction shown in the figure, the central axis of the water passage component 300 is vertically oriented. Along the central axis of the water passage component 300 towards the periphery of the water passage component 300, each air intake hole 330 is arranged on the outer side of the area where the water passage 310 is located. That is, from the top view in the figure, the direction from the central axis of the water passage component 300 towards the periphery of the water passage component 300 is radial. The approximate area where each water passage 310 is located on the water passage component 300 is defined as the first area 350, which is the area surrounded by the circular dotted line in the figure. Each air inlet 330 is located on the periphery of the first region 350 and can be distributed around the first region 350 along the circumference of the water passage 300. Along the radial direction of the water passage 300, at least a portion of the return air holes 320 are located between the air inlet 330 and the water passage 310. The water inlet channel 210, the negative pressure chamber 120, and the water passage 310 are sequentially connected to form a Venturi passage. The water inlet channel 210 can be configured as a tapered hole with a gradually decreasing inner diameter from the upper end of the inner cavity 110 towards the negative pressure chamber 120. The water passage 310 is configured as a tapered hole with a gradually decreasing inner diameter from the negative pressure chamber 120 towards the lower end of the inner cavity 110. The smaller diameter end of the water inlet channel 210 is opposite to the larger diameter end of the water passage 310, and the maximum inner diameter of the water inlet channel 210 is smaller than the minimum inner diameter of the water passage 310. The cutting assembly 400 is located downstream (below) of the water-passing component 300. A cavity 140 is formed between the cutting assembly 400 and the water-passing component 300 by a certain interval. Several cutting holes 411 are provided on the cutting assembly 400. In actual use, the water outlet device can be applied to products such as faucets. The upper end of the housing 100 is connected to the water outlet of the faucet, such as... Figure 3As shown, water enters the inner cavity 110 and is then dispersed into each water inlet channel 210. The water is then sprayed into the negative pressure chamber 120 through each water inlet channel 210, and then flows from the negative pressure chamber 120 through the water channel 310 and is sprayed onto the cutting assembly 400. The water flow through the water inlet channel 210, the negative pressure chamber 120, and the water channel 310 generates a Venturi effect, creating a negative pressure in the negative pressure chamber 120. External air is drawn into the negative pressure chamber 120 through the air inlet chamber 130 and the air inlet hole 330. When the water flows through the negative pressure chamber 120, it mixes with the air. However, the water and air do not mix effectively, and large air bubbles form in the water. Water mixed with large air bubbles impacts the cutting component 400 after passing through water channel 310. Some water and gas flow through cutting hole 411, which cuts the large air bubbles into microbubbles. Water mixed with microbubbles continues to flow downstream of inner cavity 110 after passing through cutting hole 411, and finally sprays out of shell 100. Some large air bubbles are not effectively mixed and dissolve in water. Under the negative pressure of negative pressure chamber 120, the large air bubbles in cavity 140 re-enter negative pressure chamber 120 through return air hole 320 for re-mixing, thus circulating and making the bubble water sprayed out by cutting component 400 have fine and concentrated bubbles. When large air bubbles flow back to the negative pressure chamber 120 through the return air hole 320 located between the air inlet 330 and the water passage 310, the airflow formed by the large air bubbles creates a dynamic "bubble curtain" or "airlock." The bubble curtain blocks the water path between the air inlet 330 and the water passage 210, allowing air from the air inlet 330 to enter the negative pressure chamber 120. When water pressure fluctuates as the water is supplied to the inner chamber 110 by the faucet, and water in the negative pressure chamber 120 attempts to leak out through the air inlet 330, the bubble curtain disrupts the water flow towards the air inlet 330 in the negative pressure chamber 120, increasing the resistance to the water flow and effectively preventing water from leaking out through the air inlet 330.

[0034] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, each air inlet 330 is disposed on the peripheral wall of the water-passing component 300. The direction in which the fluid is ejected from the air inlet 330 into the negative pressure chamber 120 is perpendicular to the direction in which the fluid is ejected from the return air 320 into the negative pressure chamber 120. In the direction shown, the direction in which the fluid is ejected from the return air 320 into the negative pressure chamber 120 is vertically upward; the direction in which the fluid is ejected from the air inlet 330 into the negative pressure chamber 120 is horizontal, which can be towards the central axis of the water-passing component 300. The ejection directions of the air inlet 330 and the return air outlet 320 are perpendicular to each other. After the air passes through the air inlet 330, it merges into the bubble curtain formed by the return air outlet 320. The two airflows form an oblique upward flow towards the central axis of the water inlet 300, enhancing the airflow intensity of the bubble curtain near the water inlet 200. If water in the negative pressure chamber 120 attempts to flow towards the air inlet 330, the water flow will be disturbed upward by the impact of the bubble film when passing through the bubble curtain. The bubble curtain effectively blocks the water flow and prevents it from flowing towards the air inlet 330. The ejection direction of the fluid sprayed from the water inlet channel 210 into the negative pressure chamber 120 can be vertically downward or obliquely downward. In this embodiment, the ejection direction of the fluid from the inlet channel 210 to the negative pressure chamber 120 is parallel to the ejection direction of the fluid from the return air hole 320 to the negative pressure chamber 120. That is, the ejection direction of the inlet channel 210 is vertically downward, and the ejection direction of the return air hole 320 is vertically upward. When water flows through the inlet channel 210 to the water passage 310, the water column formed is parallel to or nearly parallel to the bubble curtain. The water flow ejected from the inlet channel 210 can flow stably to the water passage 310 after passing through the negative pressure chamber 120. If water pressure fluctuations occur, the water ejected from the inlet channel 210 to the negative pressure chamber 120 can be limited to the water passage 310. Combined with the effect of the bubble curtain, leakage is effectively prevented.

[0035] In one embodiment, the vent 320 can be configured as a cylindrical hole. Alternatively, as... Figure 2 As shown, the return air hole 320 is a cone-shaped hole with an inner diameter that gradually decreases towards the negative pressure chamber 120. The cone-shaped return air hole 320 can accelerate the airflow to be ejected towards the negative pressure chamber 120, thereby increasing the intensity of the bubble curtain.

[0036] In one embodiment, such as Figure 2 , Figure 5 and Figure 6As shown, based on the position of the return air hole 320 on the water-passing component 300, the return air holes 320 at different positions are defined as the first hole 321, the second hole 322, and the third hole 323, respectively. The water-passing component 300 has several sequentially spaced protrusions 340 on its periphery, with the gap between two adjacent protrusions 340 forming an air inlet hole 330. During installation, the top of each protrusion 340 abuts against the lower side of the water-passing component 200, and the lower side of the water-passing component 200 can be used as the upper sidewall of each air inlet hole 330. The emission direction of each air inlet hole 330 towards the negative pressure chamber 120 can be oriented towards the central axis of the water-passing component 300. A first hole 321 is provided along the path of the emission direction of the air inlet hole 330 towards the negative pressure chamber 120; that is, the extension line of the emission direction of the air inlet hole 330 intersects and is perpendicular to the central axis of the corresponding first hole 321. The first hole 321 is closer to the air inlet hole 330 than the water passage 310. It could also be located on the periphery of the first region 350. This positioning allows the bubble curtain formed by the first hole 321 to be closer to the air inlet hole 330, more effectively converging the airflow and bubble curtain within the air inlet hole 330, thus preventing water in the negative pressure chamber 120 from leaking into the air inlet hole 330 and the first hole 321. Airflow returns to the negative pressure chamber 120 through the first hole 321, and the bubble curtain formed by the first hole 321 approaches the corresponding air inlet hole 330, effectively preventing water from flowing towards the air inlet hole 330. The second hole 322 is disposed between two adjacent first holes 321 along the circumference of the water passage 300. The second hole 322 is aligned with the boss 340. The bubble curtain formed by the second hole 322 supplements the bubble curtain formed by the two adjacent first holes 321. The bubble curtain formed by the first holes 321 and the second hole 322 together surrounds the first region 350, further obstructing the flow of water to the air inlet hole 330. Furthermore, a number of third holes 323 are distributed around the water passage 310, and the third holes 323 are closer to the water passage 310 than the first holes 321. By utilizing the third hole 323 to form a partial bubble curtain around each water passage 310, the bubbles passing through the third hole 323 can quickly merge into the water jet sprayed from the inlet channel 210 to the water passage 310, forming a circulation. Furthermore, when the water pressure is unstable, the bubble curtain formed by the third hole 323 acts as the first layer of obstruction, while the bubble curtains formed by the second hole 322 and the first hole 321 form a second layer of obstruction, effectively preventing leakage. Additionally, when pressure buildup occurs in the cavity 140, water in the cavity 140 may backflow into the negative pressure chamber 120 through part of the return air hole 320. Since the third hole 323 is closer to the water passage 310 than the first hole 321 and the second hole 322, the backflow of water from the cavity 140 due to pressure buildup will mainly backflow into the negative pressure chamber 120 through the third hole 323, reducing or preventing water backflow into the negative pressure chamber 120 through the first hole 321 and the second hole 322, thus ensuring the formation of a bubble curtain near the air inlet 330.

[0037] In one embodiment, such as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the cutting assembly 400 includes a filter screen 410 and at least two baffles 420, with the baffles 420 located between the filter screen 410 and the water passage component 300. The filter screen 410 has a plurality of cutting holes 411, and the filter screen 410 can be used in one or more layers. The baffles 420 are arranged sequentially from top to bottom along the direction of fluid ejection from the water passage 310. The baffles 420 have a plurality of ribs 430, with a plurality of grid holes 421 formed between the ribs 430. Between two adjacent baffles 420, a portion of the rib 430 on one baffle 420 is aligned with the grid hole 421 on the other baffle 420, and the rib 430 does not completely cover the grid hole 421. When water is sprayed from the water passage 310 onto the baffle 420, due to the staggered distribution of the ribs 430 and the grid holes 421, the water and air bubbles impact the ribs 430. The ribs 430 can perform multiple divisions, collisions, and shearing of each jet, generating intense turbulence and achieving primary fine breaking of the bubbles. Then, the bubble-water continues to flow downward through the gap between the ribs 430 and the grid holes 421, and undergoes secondary cutting through the cutting holes 411. Combined with the circulation of the bubbles through the return air holes 320, the bubble-water that is finally sprayed out of the shell 100 reaches the micro-nano scale.

[0038] Specifically, the rib 430 includes a first rib 431 and a second rib 432. A plurality of first ribs 431 extend radially outward from the center of the partition 420. The second ribs 432 are annularly connected to the center of the partition 420 and are distributed sequentially along the radial direction of the partition 420. The first ribs 431 and the second ribs 432 form a spiderweb-like structure. The joints between the first ribs 431 and the second ribs 432 on a partition 420 are shaped like a cross or an X. These joints are aligned with the grid holes 421 on another partition 420 adjacent to that partition. The aerated water is segmented, collided with, and sheared through the joints between the first ribs 431 and the second ribs 432.

[0039] In one embodiment, such as Figure 1 and Figure 2 As shown, the water outlet device also includes a rectifier 500. The rectifier 500 is installed in the inner cavity 110 and located downstream of the cutting assembly 400. The rectifier 500 has several honeycomb-shaped rectifier holes 510. After passing through the cutting holes 411, the bubble water flows through each rectifier hole 510, effectively eliminating large-scale eddies and making the water outlet uniform and the water column smooth.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water outlet device, characterized in that, include: The housing (100) has an inner cavity (110). A water inlet (200) is installed in the inner cavity (110) and the water inlet (200) is provided with a plurality of water inlet channels (210). A water-passing component (300) is installed in the inner cavity (110) and located downstream of the water-inlet component (200). A negative pressure chamber (120) is defined between the water-inlet component (200) and the water-passing component (300). An air inlet chamber (130) is defined between the peripheral wall of the water-passing component (300) and the housing (100). The water-passing component (300) is provided with a plurality of water passages (310), a plurality of air return holes (320), and a plurality of air inlet holes (330). The water inlet channels (210) and the water passages (310) are aligned one-to-one. The negative pressure chamber (120) is located downstream of the water-inlet component (200). The air inlet (130) and the air inlet (210) are connected through the air inlet holes (330). When the liquid flows along the water inlet channel (210), the negative pressure chamber (120) and the water passage (310), it can generate a Venturi effect to form a negative pressure in the negative pressure chamber (120). Along the central axis of the water passage (300) towards its periphery, the air inlet holes (330) are arranged on the outer side of the area where the water passage (310) is located. At least a portion of the air return holes (320) are located between the air inlet holes (330) and the water passage (310). A cutting assembly (400) is installed in the inner cavity (110) and located downstream of the water passage component (300). The cutting assembly (400) is provided with a plurality of cutting holes (411).

2. The water outlet device according to claim 1, characterized in that: Each of the air inlet holes (330) is disposed on the peripheral wall of the water passage (300), and the direction of the air inlet hole (330) spraying fluid into the negative pressure chamber (120) is perpendicular to the direction of the return air hole (320) spraying fluid into the negative pressure chamber (120).

3. The water outlet device according to claim 2, characterized in that: The direction in which the fluid is ejected from the water inlet channel (210) into the negative pressure chamber (120) is parallel to the direction in which the fluid is ejected from the air return hole (320) into the negative pressure chamber (120).

4. The water outlet device according to claim 1, characterized in that: The return air hole (320) is cylindrical, or the return air hole (320) is a conical hole with an inner diameter that gradually decreases toward the negative pressure chamber (120).

5. The water outlet device according to any one of claims 1 to 4, characterized in that: A portion of the air return hole (320) is the first hole (321). The periphery of the water passage (300) is provided with a number of bosses (340) arranged in sequence at intervals. The interval between two adjacent bosses (340) forms the air inlet hole (330). The first hole (321) is provided on the path from the air inlet hole (330) to the negative pressure chamber (120) in the ejection direction. The first hole (321) is closer to the air inlet hole (330) than the water passage (310).

6. The water outlet device according to claim 5, characterized in that: A portion of the air return hole (320) is a second hole (322). The second hole (322) is provided between two adjacent first holes (321) along the circumference of the water passage member (300), and the second hole (322) is aligned with the boss (340) one by one.

7. The water outlet device according to claim 5, characterized in that: A portion of the air return holes (320) are third holes (323), and several third holes (323) are distributed around the water passage (310). The third holes (323) are closer to the water passage (310) than the first holes (321).

8. The water outlet device according to claim 1, characterized in that: The cutting assembly (400) includes a filter screen (410) and at least two partitions (420). The partitions (420) are located between the filter screen (410) and the water passage component (300). The filter screen (410) is provided with a plurality of cutting holes (411). Each partition (420) is arranged in a stacked manner along the ejection direction of the fluid jet from the water passage (310). Each partition (420) is provided with a plurality of ribs (430). A plurality of grid holes (421) are formed between each of the ribs (430). Between two adjacent partitions (420), a portion of the rib (430) on one partition (420) is aligned with the grid hole (421) on the other partition (420), and the rib (430) does not completely cover the grid hole (421).

9. The water outlet device according to claim 8, characterized in that: The rib (430) includes a first rib (431) and a second rib (432). A plurality of first ribs (431) extend radially outward from the center of the partition (420). The second ribs (432) are connected in a ring around the center of the partition (420) to each of the first ribs (431). A plurality of second ribs (432) are distributed sequentially along the radial direction of the partition (420). The joints of the first ribs (431) and the second ribs (432) on one partition (420) are positioned opposite to the grid holes (421) on the adjacent partition (420).

10. The water outlet device according to claim 1, characterized in that: It also includes a rectifier (500), which is installed in the inner cavity (110) and located downstream of the cutting assembly (400), and the rectifier (500) is provided with a plurality of honeycomb-shaped rectifier holes (510).

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