Liquid outlet device and milk foam machine

Abstract

The utility model provides a liquid outlet device and a milk foam machine. The liquid outlet device comprises a liquid outlet piece, a liquid path on-off assembly and a limiting part. The sealing element is switched between a first state for blocking the liquid outlet and a second state for opening the liquid outlet; the limiting part is located on one of the inner circumferential face of the liquid outlet piece and the outer circumferential face of the sealing piece. And in the second state, the limiting part abuts against the other one of the inner circumferential surface of the liquid outlet piece and the outer circumferential surface of the sealing piece, so that the central axis of the sealing piece coincides with the central axis of the liquid outlet, and a liquid outlet flow channel is defined by the limiting part, the outer circumferential surface of the sealing piece and the inner circumferential surface of the liquid outlet piece. The liquid outlet device can prevent the liquid from deflecting after flowing out of the liquid outlet.

Description

Technical Field

[0001] This application relates to the field of milk foam generating equipment technology, and more particularly to a liquid dispensing device and a milk foam machine. Background Technology

[0002] The working principle of the liquid dispensing device of the milk frother is as follows: the drive component drives the moving part to move back and forth. One end of the moving part is equipped with a sealing element, which is located in the liquid dispensing chamber of the liquid dispensing part, so that the sealing element moves back and forth in the liquid dispensing chamber. The sealing element switches between blocking the liquid dispensing outlet of the liquid dispensing part and opening the liquid dispensing outlet of the liquid dispensing part. When the sealing element opens the liquid dispensing outlet of the liquid dispensing part, the milk foam liquid flows out from the liquid dispensing gap between the liquid dispensing part and the sealing element.

[0003] In actual use, the moving parts of the dispensing device are usually designed as slender rods. When the seal opens the dispensing port, the moving part often causes the seal to deflect towards one side of the dispensing chamber wall. This results in an uneven circumferential distribution of the gap between the dispensing part and the seal, causing the liquid to flow out of the dispensing port at a certain angle. The liquid cannot flow vertically downwards, leading to a poor user experience with the milk frother. Furthermore, the significant angle of the milk foam flowing out of the dispensing port may cause liquid to splash onto the outside of the cup below the dispensing port. Utility Model Content

[0004] To address the aforementioned issues, embodiments of this application provide a liquid dispensing device and a milk frother. The liquid dispensing device of this application has a limiting part on one of the inner circumferential surface of the liquid dispensing component and the outer circumferential surface of the sealing component. When the sealing component opens the liquid outlet, the limiting part, the outer circumferential surface of the sealing component, and the inner circumferential surface of the liquid dispensing component together form a liquid dispensing channel. The limiting part can prevent the sealing component from deflecting to one side of the inner circumferential surface of the liquid dispensing component when the liquid outlet is opened, ensuring that the liquid flows vertically downward after flowing out of the liquid outlet.

[0005] The specific technical solutions of this application embodiment are as follows:

[0006] A liquid dispensing device, comprising:

[0007] The liquid outlet component is provided with a liquid outlet cavity and a liquid outlet communicating with the liquid outlet cavity;

[0008] A liquid circuit switching assembly includes a movable component and a sealing element located at one end of the movable component. The sealing element is located in the liquid outlet chamber. The movable component is configured to drive the sealing element to reciprocate, thereby switching the sealing element between a first state of blocking the liquid outlet and a second state of opening the liquid outlet.

[0009] A limiting part is located on one of the inner circumferential surface of the liquid outlet and the outer circumferential surface of the seal. In the second state, the limiting part abuts against the other of the inner circumferential surface of the liquid outlet and the outer circumferential surface of the seal, so that the central axis of the seal coincides with the central axis of the liquid outlet, and the limiting part, the outer circumferential surface of the seal and the inner circumferential surface of the liquid outlet form a liquid outlet channel.

[0010] A milk frother includes a liquid dispensing device as described in the above embodiments.

[0011] The technical advantages of the liquid dispensing device in this application embodiment are as follows:

[0012] The liquid dispensing device provided in this application embodiment has a limiting part on one of the inner circumferential surface of the liquid dispensing component and the outer circumferential surface of the sealing component. When the sealing component is in the second state of opening the liquid outlet, the limiting part is located between the inner circumferential surface of the liquid dispensing component and the outer circumferential surface of the sealing component. The limiting part, the outer circumferential surface of the sealing component, and the inner circumferential surface of the liquid dispensing component together form a liquid dispensing channel. In this way, the limiting part can prevent the sealing component from deflecting to one side of the inner circumferential surface of the liquid dispensing component in the second state, so that the gap of the liquid dispensing channel is more evenly distributed along the circumferential direction, and the central axis of the sealing component coincides with the central axis of the liquid outlet. This ensures that the overall flow trend of the liquid flowing out of the liquid outlet is to flow in a vertically downward direction, so that the liquid flowing out of the liquid outlet will not be deflected, and the user experience of using the liquid dispensing device is better.

[0013] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0014] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0015] Figure 1 This is a three-dimensional structural diagram of a liquid dispensing device according to an embodiment of this application;

[0016] Figure 2 for Figure 1 A schematic diagram of the main structure of the liquid outlet device;

[0017] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the liquid outlet device cut along the AA direction;

[0018] Figure 4 for Figure 2 A schematic diagram of the liquid outlet device from the left side;

[0019] Figure 5 This is a schematic front view of the liquid outlet component according to an embodiment of this application;

[0020] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of the liquid outlet component cut along the BB direction;

[0021] Figure 7 for Figure 5 A bottom view of the liquid outlet component. Detailed Implementation

[0022] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique application solutions.

[0023] Please refer to the instruction manual appendix. Figures 1 to 7 The diagram shows a schematic representation of the liquid dispensing device according to an exemplary embodiment of this application. Figures 1 to 4 As shown in the figure, this application provides a liquid dispensing device, including a liquid dispensing component 1, a liquid flow switching assembly, and a limiting part 4. The liquid dispensing component 1 has a liquid dispensing chamber 11 and a liquid outlet 12 communicating with the liquid dispensing chamber 11. The liquid flow switching assembly includes a movable component 2 and a sealing component 3 located at one end of the movable component 2. The sealing component 3 is located in the liquid dispensing chamber 11. The movable component 2 is configured to drive the sealing component 3 to reciprocate, allowing the sealing component 3 to switch between a first state of blocking the liquid outlet 12 and a second state of opening the liquid outlet 12. The limiting part 4 is located on one of the inner circumferential surface of the liquid dispensing component 1 and the outer circumferential surface of the sealing component 3. In the second state, the limiting part 4 abuts against the other of the inner circumferential surface of the liquid dispensing component 1 and the outer circumferential surface of the sealing component 3, causing the central axis of the sealing component 3 to coincide with the central axis L1 of the liquid outlet 12, and causing the limiting part 4, the outer circumferential surface of the sealing component 3, and the inner circumferential surface of the liquid dispensing component 1 to form a liquid dispensing channel.

[0024] Specifically, Figure 5 The diagram shows the specific position of the central axis L1 of the outlet 12. When the seal 3 moves to the position of blocking the outlet 12 under the action of the movable part 2, the seal 3 is in the first state. Figure 3 In the embodiment shown, the lower part of the seal 3 blocks the liquid outlet 12. Figure 3The seal 3 shown is in the first state, at which time liquid cannot flow out of the liquid outlet 12 of the liquid outlet device. Under the action of the movable part 2, the seal 3 moves in the liquid outlet chamber 11 to the side away from the liquid outlet 12, so that the liquid outlet 12 is opened, and the seal 3 is in the second state. At this time, the gap between the outer peripheral surface of the seal 3 and the inner peripheral surface of the liquid outlet 1 forms a liquid outlet gap, and the liquid entering the liquid outlet chamber 11 can flow along the liquid outlet gap and flow out from the liquid outlet 12.

[0025] In the prior art, the movable part 2 of the liquid dispensing device is usually designed as a slender rod. When the movable part 2 moves the sealing part 3 to the second state of opening the liquid outlet 12, the movable part 2 often causes the sealing part 3 to deflect towards one side of the liquid outlet cavity 11. This results in the gap between the liquid dispensing part 1 and the sealing part 3 being unevenly distributed along the circumferential direction. As a result, when the liquid flows out of the liquid outlet 12, it deflects in a certain direction. After the liquid flows out of the liquid outlet 12, it cannot flow vertically downwards, resulting in a poor user experience when using the liquid dispensing device.

[0026] Taking a milk frother as an example, the gap of the liquid outlet device of a milk frother is usually set to a few millimeters. For example, when the seal 3 is in the second state, it is tilted to one side of the inner circumference of the liquid outlet 1, so that the minimum gap of the liquid outlet on that side is zero, while the gap of the liquid outlet on the opposite side has a maximum value of a few millimeters. In this way, the liquid entering the liquid outlet chamber 11 mainly flows along the liquid outlet on the other side. After the liquid flows out from the liquid outlet 12, due to inertia, it will continue to flow along the flow direction in the liquid outlet on the other side. This results in the liquid flowing out from the liquid outlet 12 not being able to flow vertically downwards when viewed as a whole.

[0027] The liquid dispensing device provided in this application embodiment has a limiting part 4 on one of the inner circumferential surface of the liquid dispensing component 1 and the outer circumferential surface of the sealing component 3. When the sealing component 3 is in the second state of opening the liquid outlet 12, the limiting part 4 is located between the inner circumferential surface of the liquid dispensing component 1 and the outer circumferential surface of the sealing component 3. The limiting part 4, the outer circumferential surface of the sealing component 3, and the inner circumferential surface of the liquid dispensing component 1 together form a liquid dispensing channel. In this way, the limiting part 4 can prevent the sealing component 3 from deflecting to one side of the inner circumferential surface of the liquid dispensing component 1 in the second state, so that the gap of the liquid dispensing channel is more evenly distributed along the circumferential direction, and the central axis of the sealing component 3 coincides with the central axis L1 of the liquid outlet 12. This ensures that the overall flow trend of the liquid flowing out of the liquid outlet 12 is to flow in a vertically downward direction, so that the liquid flowing out of the liquid outlet 12 will not be deflected, and the user experience of using the liquid dispensing device is better.

[0028] It is understood that the application scope of the liquid dispensing device in this application embodiment is not limited to milk frothing machines; the liquid dispensing device in this application embodiment can also be applied to other devices that require liquid dispensing. Figures 6 to 7In the embodiment of the liquid dispensing component 1 shown, the limiting part 4 is located on the inner peripheral surface of the liquid dispensing component 1. The limiting part 4 of this application can be located on the inner peripheral surface of the liquid dispensing component 1 or on the outer peripheral surface of the sealing component 3, both of which are within the protection scope of this application. If the liquid dispensing device of this application is applied to food and beverage equipment, the liquid dispensing component 1 can be made of food-grade materials. Preferably, the sealing component 3 can be made of deformable materials such as rubber.

[0029] In one exemplary embodiment, such as Figures 5 to 7 As shown, the limiting part 4 includes multiple limiting ribs 41, which are evenly distributed circumferentially along the central axis L1 of the liquid outlet 12, and the liquid outlet flow channel is distributed circumferentially along the central axis L1 of the liquid outlet 12.

[0030] Specifically, multiple limiting ribs 41 are evenly distributed circumferentially along the central axis L1 of the outlet 12. In this way, the multiple limiting ribs 41 can divide the outlet flow channel into multiple sub-flow channels that are evenly spaced circumferentially along the central axis L1 of the outlet 12. Thus, the fluid entering the outlet cavity 11 can be divided into multiple liquid flows. The multiple liquids are distributed circumferentially along the inner circumferential surface of the outlet 1, so that the liquid flowing out of the outlet 12 generally flows vertically downward.

[0031] When the central axes of both the inner circumferential surface of the liquid outlet 1 and the outer circumferential surface of the seal 3 coincide with the central axis L1 of the liquid outlet 12, the liquid outlet channels are distributed circumferentially along the central axis L1 of the liquid outlet 12, so that the gap distribution of the liquid outlet channels is relatively uniform.

[0032] In one exemplary embodiment, such as Figure 3 , Figure 6 and Figure 7 As shown, the limiting part 4 is located on the inner peripheral surface of the liquid outlet 1, and the limiting rib 41 includes a protruding end face 411, which is a plane; in the second state, the protruding end face 411 abuts against the outer peripheral surface of the sealing member 3.

[0033] Specifically, the limiting part 4 is located on the inner circumferential surface of the liquid outlet 1, and the protruding end face 411 is a plane. In the second state, the protruding end face 411 abuts against the outer circumferential surface of the sealing element 3. The sealing element 3 is usually designed as an arc-shaped surface. In this way, in the second state, the protruding end face 411 and the sealing element 3 are in line contact. Multiple protruding end faces 411 constrain and limit the sealing element 3 through line contact. This structural design is simple and also helps to simplify the processing technology of the protruding end face 411 of the limiting part 4.

[0034] It is understood that the protruding end face 411 of the limiting rib 41 can also be configured into other shapes and structures, all of which are within the protection scope of this application.

[0035] In one exemplary embodiment, such as Figure 6 and Figure 7As shown, the limiting rib 41 also includes two guide surfaces 412, which are respectively disposed on both sides of the protruding end face 411; the distance between the two guide surfaces 412 increases along the direction close to the liquid outlet 12.

[0036] Specifically, the liquid outlet chamber 11 and the sealing element 3 are typically configured with a large cross-sectional area at the top and a small cross-sectional area at the bottom. The cross-sectional area of ​​the liquid outlet element 1 is smallest at the bottom liquid outlet 12, which facilitates the convergence and outflow of liquid from the liquid outlet chamber 11 through the liquid outlet 12. In the liquid outlet device of this embodiment, the guide surface 412 is located on both sides of the protruding end face 411, and the guide surface 412 forms the flow channel wall of the liquid outlet channel. Along the direction close to the liquid outlet 12, the distance between the two guide surfaces 412 increases, which can fully utilize the guiding effect of the guide surface 412, so that the liquid in each sub-channel of the liquid outlet channel of this application converges rather than diverges when it flows close to the liquid outlet 12. The liquid flow path of each sub-channel in the liquid outlet channel is not chaotic, which helps to ensure that the liquid flowing out of the liquid outlet 12 does not deviate.

[0037] In one exemplary embodiment, such as Figures 5 to 7 As shown, the liquid outlet 1 has multiple guide grooves 13 at one end near the liquid outlet 12. The multiple guide grooves 13 are evenly distributed around the central axis L1 of the liquid outlet 12, and all of the multiple guide grooves 13 are connected to the liquid outlet 12.

[0038] Specifically, multiple guide channels 13 are provided on the outer periphery of the liquid outlet 12. The multiple guide channels 13 have a diversion effect on the liquid flowing through the liquid outlet 12, so that the liquid flowing out of the liquid outlet 12 can be divided into multiple streams, which is conducive to the liquid flowing out of the liquid outlet 12 generally flowing in a vertical downward direction.

[0039] If the seal 3 of the liquid outlet device is tilted to one side of the inner circumferential surface of the liquid outlet 1 when the liquid outlet 12 is in the second state of opening, the liquid in the liquid outlet channel is more distributed on the other side of the inner circumferential surface of the liquid outlet 1, and the flow direction of the liquid flowing out of the liquid outlet 12 tends to be tilted. Multiple guide grooves 13 can buffer the tendency of the flow direction of the liquid flowing out of the liquid outlet 12 to be tilted, and disperse the flow direction of the liquid flowing out of the liquid outlet 12 into multiple directions.

[0040] In one exemplary embodiment, the limiting part 4 and the liquid outlet 1 are integrally formed; or, the limiting part 4 and the sealing part 3 are integrally formed.

[0041] Specifically, when the limiting part 4 is located on the inner circumferential surface of the liquid outlet 1, the limiting part 4 and the liquid outlet 1 can be designed to be integrally formed. When the limiting part 4 is located on the outer circumferential surface of the sealing part 3, the limiting part 4 and the sealing part 3 can be designed to be integrally formed. This structural design helps to simplify the manufacturing process.

[0042] It is understood that the limiting part 4 and the liquid outlet 1 can also be designed as separate parts; or, the limiting part 4 and the sealing part 3 can be designed as separate parts. Both are within the scope of protection of this application.

[0043] In an exemplary embodiment, both the liquid outlet chamber 11 and the seal 3 are conical, and the liquid outlet 12 is located at the apex of the cone in the liquid outlet chamber 11.

[0044] The seal 3 is configured to undergo elastic deformation; the seal 3 is configured to undergo elastic deformation in the second state to compress the limiting part 4; the seal 3 is configured to undergo elastic deformation in the first state to compress the inner circumferential surface of the liquid outlet 1 near the liquid outlet 12.

[0045] Specifically, both the outlet cavity 11 and the seal 3 are conical, which simplifies the structural design of the outlet cavity 11 and the seal 3. The outlet cavity 11 and the seal 3 of this application can also be configured in other shapes, such as polygons, all within the scope of protection of this application. The seal 3 is designed to be elastically deformable, so that when the seal 3 blocks the outlet 12, the seal is more secure; the elastic deformation of the seal 3 also ensures that when the seal 3 is in the second state with the outlet 12 open, the resulting outlet flow channel is more stable and less prone to deformation.

[0046] In one exemplary embodiment, such as Figures 1 to 3 As shown, the liquid dispensing device also includes a drive assembly 5, which is connected to the movable part 2 and configured to provide driving force for the reciprocating motion of the movable part 2.

[0047] Specifically, the drive component 5 provides driving force for the reciprocating motion of the moving part 2. The drive component 5 can be a pneumatic or electric drive or other drive components, all of which are within the protection scope of this application.

[0048] In one exemplary embodiment, such as Figure 3 As shown, the drive assembly 5 includes a coil 51, an electromagnet 52, and an elastic reset member 53. The electromagnet 52 is connected to the movable member 2, and the coil 51 is connected to the junction box 55.

[0049] The coil 51 is configured to drive the electromagnet 52 to move when energized, so that the seal 3 moves to the second state. The elastic reset member 53 is configured to undergo reset deformation when the coil 51 is de-energized, so that the movable member 2 drives the seal 3 to move to the first state.

[0050] Specifically, the driving assembly of this application uses an electromagnet 52 and an elastic reset member 53 to achieve the reciprocating motion of the movable part 2. This structure is simple in design and easy to install and maintain. The connection position between the elastic reset member 53 and the electromagnet 52 is not limited to... Figure 3The structure shown is as described. The elastic reset member 53 can be configured as a compression spring, tension spring, or leaf spring, all of which are within the scope of protection of this application. The junction box 55 can be a waterproof junction box, which can prevent liquid splashed from the liquid outlet 12 from damaging the junction box 55.

[0051] exist Figure 3 In the embodiment of the driving assembly 5 shown, the elastic reset member 53 is a compression spring. The elastic reset member 53 is located on the side of the electromagnet 52 opposite to the movable member 2. After the junction box 55 energizes the coil 51, it can drive the electromagnet 52 to move. The electromagnet 52 moves along... Figure 3 The electromagnet 52 moves upward and overcomes the elastic force of the elastic reset member 53. Simultaneously, the electromagnet 52 drives the movable member 2 to move, causing the movable member 2 and the seal 3 to move along... Figure 3 The upward movement of the liquid in the middle allows the seal 3 to open the outlet 12, allowing the liquid entering the outlet chamber 11 to flow out from the outlet 12. After the junction box 55 de-energizes the coil 51, the electromagnet 52 moves downward under the elastic restoring force of the elastic reset member 53, causing the moving member 2 and the seal 3 to move along the... Figure 3 As the liquid moves downwards, the seal 3 blocks the outlet 12, preventing the liquid entering the outlet chamber 11 from flowing out of the outlet 12.

[0052] In one exemplary embodiment, such as Figure 3 As shown, the drive assembly 5 also includes a stop member 54, which has a stop cavity 541. An electromagnet 52 is located inside the stop cavity 541, and a coil 51 is sleeved on the outside of the stop member 54. The electromagnet 52 includes a first end 521 connected to the movable member 2 and a second end 522 away from the movable member 2. The two ends of the elastic reset member 53 abut against the second end 522 and the cavity wall of the stop cavity 541, respectively.

[0053] Specifically, the stop 54 serves to accommodate and limit the electromagnet 52.

[0054] like Figure 3 In the illustrated embodiment, the upper part of the stop member 54 is provided with an external thread, and the knurled nut 7 is screwed onto the outside of the external thread of the stop member 54. The lower end of the knurled nut 7 presses against the outer surfaces of the stop member 54 and the coil 51, and the knurled nut 7 can restrict the movement of the stop member 54 and the coil 51. The stop member 54 is provided with a stop cavity 541, which contains an electromagnet 52. When the coil 51 is energized, the electromagnet 52 moves upward, and the electromagnet 52 can move until the upper end face of the second end 522 of the electromagnet 52 abuts against the cavity wall of the stop cavity 541. After the coil 51 is de-energized, the elastic reset member 53 causes the electromagnet 52 to move downward, and the electromagnet 52 can move until the lower end face of the first end 521 of the electromagnet 52 abuts against the outer surface of the liquid inlet member 6.

[0055] In one exemplary embodiment, such as Figure 3 As shown, the liquid outlet device also includes a liquid inlet 6, which has a liquid inlet channel 61 that is connected to the liquid outlet channel.

[0056] Specifically, a solenoid valve can be installed on the upstream side of the liquid inlet 6 along the direction of liquid flow, and the solenoid valve can control the liquid inlet opening and closing in the liquid inlet 6.

[0057] In one exemplary embodiment, such as Figure 3 As shown, the movable part 2 passes through the liquid inlet 6. The liquid inlet 6 is provided with a first channel 62 and a second channel 63. After passing through the second channel 63 and the first channel 62, the movable part 2 is connected to the electromagnet 52. The first channel 62 is located close to the drive assembly 5. The movable part 2 is sealed to the wall of the first channel 62. The movable part 2 and the wall of the second channel 63 are provided with a gap for liquid to pass through.

[0058] Specifically, the movable member 2 passes through the liquid inlet member 6. Besides providing a liquid inlet channel 61 for liquid input, the liquid inlet member 6 also supports the movable member 2. A sealing ring can be provided between the movable member 2 and the wall of the first channel 62 to achieve a sealed connection.

[0059] like Figure 3 As shown, a discharge pipe 8 is also provided between the liquid inlet 6 and the liquid outlet 1. If the liquid outlet device of this application is applied to food and beverage equipment, both the discharge pipe 8 and the liquid inlet 6 can be made of food-grade materials.

[0060] This application provides a milk frother, including a liquid dispensing device as described in any of the exemplary embodiments above.

[0061] Specifically, the milk frother of this application includes a liquid dispensing device as described in any of the exemplary embodiments above, and therefore has the structural features and advantages of the liquid dispensing device described in any of the exemplary embodiments above, which will not be repeated here.

[0062] In the description of this application, 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0063] Furthermore, the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0065] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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 this application. In this specification, the 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.

Claims

1. A liquid dispensing device, characterized in that, include: The liquid outlet component is provided with a liquid outlet cavity and a liquid outlet communicating with the liquid outlet cavity; A liquid circuit switching assembly includes a movable part and a sealing element located at one end of the movable part. The sealing element is located in the liquid outlet chamber. The movable part is configured to drive the sealing element to reciprocate, so that the sealing element switches between a first state of blocking the liquid outlet and a second state of opening the liquid outlet. and A limiting part is located on one of the inner circumferential surface of the liquid outlet and the outer circumferential surface of the seal. In the second state, the limiting part abuts against the other of the inner circumferential surface of the liquid outlet and the outer circumferential surface of the seal, so that the central axis of the seal coincides with the central axis of the liquid outlet, and the limiting part, the outer circumferential surface of the seal and the inner circumferential surface of the liquid outlet form a liquid outlet channel.

2. The liquid dispensing device according to claim 1, characterized in that, The limiting part includes multiple limiting ribs, which are evenly distributed circumferentially along the central axis of the liquid outlet, and the liquid outlet channel is distributed circumferentially along the central axis of the liquid outlet.

3. The liquid dispensing device according to claim 2, characterized in that, The limiting part is located on the inner peripheral surface of the liquid outlet, and the limiting rib includes a protruding end face, which is a plane; in the second state, the protruding end face abuts against the outer peripheral surface of the sealing element.

4. The liquid dispensing device according to claim 3, characterized in that, The limiting rib also includes two flow guiding surfaces, which are respectively disposed on both sides of the protruding end face; the distance between the two flow guiding surfaces increases along the direction closer to the liquid outlet.

5. The liquid dispensing device according to any one of claims 1 to 4, characterized in that, The liquid outlet component has multiple guide grooves at one end near the liquid outlet. The multiple guide grooves are evenly distributed circumferentially along the central axis of the liquid outlet, and all of the multiple guide grooves are connected to the liquid outlet.

6. The liquid dispensing device according to any one of claims 1 to 4, characterized in that, Both the liquid outlet chamber and the sealing element are conical, with the liquid outlet located at the apex of the conical chamber; the sealing element is configured to undergo elastic deformation; the sealing element is configured to elastically deform and compress the limiting portion in the second state; the sealing element is configured to elastically deform and compress the portion of the inner circumferential surface of the liquid outlet element near the liquid outlet in the first state.

7. The liquid dispensing device according to any one of claims 1 to 4, characterized in that, It also includes a drive assembly connected to the movable element and configured to provide a driving force for the reciprocating motion of the movable element.

8. The liquid dispensing device according to claim 7, characterized in that, The driving assembly includes a coil, an electromagnet, and a resilient reset element, wherein the electromagnet is connected to the movable element; The coil is configured to drive the electromagnet to move when energized, so that the seal moves to the second state; the elastic reset member is configured to undergo reset deformation when the coil is de-energized, so that the seal moves to the first state through the movable member.

9. The liquid dispensing device according to any one of claims 1 to 4, characterized in that, It also includes a liquid inlet component, which has a liquid inlet channel that is connected to the liquid outlet channel.

10. A milk frother, characterized in that, Includes the liquid dispensing device as described in any one of claims 1 to 9.

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