Milk brewing machine
By introducing a water guiding component into the milk powder maker, the water flow is directed to the powder drop area below the powder outlet, solving the problem of milk powder sticking to the inner wall of the mixing chamber, achieving better cleaning results, and avoiding hygiene issues.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HAWK ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-05-19
AI Technical Summary
In existing formula makers, milk powder tends to stick to the inner wall of the mixing chamber, especially when the amount of milk powder is small or the proportion is high. This creates dead corners in the mixing chamber, leading to hygiene problems.
Design a milk maker that incorporates a water-guiding component, including a water pipe and an inlet connector, within the mixing chamber. Water is guided from the inlet connector to the powder drop area below the powder outlet, and the outlet sprays water towards the powder drop area to rinse the milk powder, reducing dead zones in the mixing chamber.
It effectively reduces the accumulation of milk powder in the mixing chamber, improves the hygiene of the milk maker, and avoids the health risks caused by milk powder residue.
Smart Images

Figure CN224251175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of beverage brewing equipment, and in particular to a milk maker. Background Technology
[0002] A formula maker is a device used to prepare formula. It typically includes a powder container and a mixing chamber. The powder container holds the formula powder, and the mixing chamber mixes the powder with water. Specifically, the powder container is connected above the mixing chamber. The bottom of the powder container has a powder outlet that connects to the inner cavity of the mixing chamber. The mixing chamber has a water inlet pipe that connects to a water tank, and a liquid outlet is located at the bottom of the mixing chamber, with the water inlet pipe connecting to the inner cavity. The formula powder in the powder container enters the inner cavity of the mixing chamber through the powder outlet, and hot water enters the mixing chamber through the water inlet pipe to prepare the formula. The prepared formula is then discharged from the liquid outlet at the bottom of the mixing chamber for the user to use.
[0003] In existing technologies, the mixing chamber is typically funnel-shaped, and the powder outlet is not directly opposite the liquid outlet. Instead, it is offset from the liquid outlet, allowing the milk powder to fall into the mixing chamber before mixing with water. However, this design also makes it easy for milk powder to stick to the inner wall of the mixing chamber, especially when the amount of milk being prepared is small or the milk powder to water ratio is high. This creates hard-to-reach areas within the mixing chamber, making it difficult for the water entering the chamber to thoroughly rinse away the milk powder. This residual milk powder can cause hygiene problems with the milk maker and is detrimental to the user's health. Utility Model Content
[0004] To address the shortcomings of existing milk powder adhering to milk powder in milk maker machines, which causes hygiene problems, this invention provides a milk maker.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] This utility model provides a formula preparation machine, the formula preparation machine comprising:
[0007] A powder container, which is used to store milk powder, has a powder outlet at the bottom for the milk powder to flow out.
[0008] A mixing chamber, the inner cavity of which is aligned with the powder outlet, the inner wall of which forms a powder drop area located below the powder outlet, and the mixing chamber is connected to a water inlet connector that communicates with the inner cavity of the mixing chamber.
[0009] A water-guiding component is provided in the mixing chamber. The water-guiding component is provided with a water-guiding flow path. The water inlet end of the water-guiding flow path is connected to the water inlet connector. The water outlet end of the water-guiding flow path forms a water outlet, which is oriented towards the powder drop area.
[0010] In this design, when the formula maker is preparing formula, the milk powder in the powder container falls into the powder collection area of the mixing chamber. Water for preparation enters the mixing chamber through the water inlet to prepare the formula. The water inlet is connected to a water guide path, which directs water from the inlet to the powder collection area below the powder outlet. The water then sprays out from the outlet facing the powder collection area to rinse away the milk powder. Compared to traditional formula makers where water flows directly from the inlet, this design uses a water guide path to direct water to the powder collection area, ensuring smooth water flow to rinse away the milk powder, reducing dead zones in the mixing chamber, and preventing milk powder from accumulating and causing hygiene problems.
[0011] Furthermore, the water intake component includes a water intake pipe, the inner cavity of which forms the water intake flow path; one end of the water intake pipe is connected to the water inlet connector, and the water outlet is located at the end of the water intake pipe away from the water inlet connector.
[0012] In this solution, the water intake component includes a water intake pipe, which connects to the water inlet connector to guide the water from the water inlet connector to the powder drop area. Since the tubular water intake pipe is open at only two ends, the water pressure can be maintained when the water flows through the water intake pipe, ensuring that the water flowing out of the outlet has a certain speed to flush the powder drop area.
[0013] Furthermore, a limiting protrusion is provided radially outward at one end of the water inlet pipe near the water inlet connector, and a limiting groove is provided in the mixing chamber. The limiting protrusion cooperates with the limiting groove to prevent the water inlet pipe from moving axially along the water inlet connector.
[0014] In this solution, the water inlet pipe is confined within the mixing chamber by a limiting protrusion and a limiting groove, thus fixing the water inlet pipe relative to the water inlet connector. This installation solution does not require additional installation parts, and the water inlet pipe is easy to install.
[0015] Furthermore, the side wall of the limiting groove is provided with a water inlet hole that connects to the water inlet connector. The end of the water pipe facing the water inlet connector is directly opposite to and connected to the water inlet hole. A sealing ring is connected to the side of the limiting protrusion facing the water inlet hole. The sealing ring is arranged around the water inlet hole, and the side of the sealing ring away from the limiting protrusion abuts against the side wall of the limiting groove.
[0016] In this design, a water inlet hole is provided in the limiting groove, and the water inlet pipe is connected to the water inlet connector through the water inlet hole. When the limiting protrusion is inserted into the limiting groove, the sealing ring surrounds the water inlet hole and abuts against the side wall of the limiting groove, making it less prone to water leakage at the connection between the water inlet and the water inlet pipe.
[0017] Furthermore, an installation groove is provided inside the mixing chamber, and the installation groove extends along the inner wall of the mixing chamber from the water inlet to the powder drop area, and the water pipe is fitted into the installation groove.
[0018] In this design, the water inlet pipe fits into the installation groove, which restricts the position of the water inlet pipe and prevents it from swaying in the mixing chamber. At the same time, the installation groove guides the water inlet pipe to extend along the inner wall of the mixing chamber, making the installation position of the water inlet pipe reasonable and minimizing pressure loss when the water flows.
[0019] Furthermore, a limiting flange protrudes from the inner wall of the end of the mounting groove away from the water inlet connector into the mounting groove, and the limiting flange blocks the end of the water pipe near the powder drop area.
[0020] In this design, the end of the water inlet pipe furthest from the inlet connector is blocked and limited by a limiting device, making it difficult for the water inlet pipe to shift along its length within the installation groove. This ensures that the water inlet pipe is installed more stably within the installation groove, thereby guaranteeing a stable connection between the water inlet pipe and the inlet connector.
[0021] Furthermore, the outer periphery of the water inlet pipe has a flat limiting surface that fits into the inner wall of the mounting groove.
[0022] In this design, the outer periphery of the water inlet pipe has a flat limiting surface that fits into the inner wall of the mounting groove, making it less prone to circumferential rotation after the water inlet pipe is installed in the mounting groove, and making the water inlet pipe more stable during operation.
[0023] Furthermore, the flow area of the end of the water pipe near the powder drop area is smaller than the flow area of the end of the water pipe near the water inlet connector.
[0024] In this design, the flow area of the water pipe near the powder collection area is reduced, which increases the water flow velocity. This allows the water flowing out of the outlet to better mix the milk powder and enhances the rinsing force on the milk powder in the collection area, further reducing milk powder residue.
[0025] Furthermore, the water outlet is elongated and vertically oriented.
[0026] In this design, the water outlet is elongated and vertically positioned, allowing the water flowing from the outlet to spread more widely in the vertical direction. This increases the vertical coverage area of the water flow in the powder-falling area while maintaining the water pressure at the outlet, further reducing dead zones in milk preparation.
[0027] Furthermore, the mixing chamber is fitted and fixed to the bottom side of the powder bucket.
[0028] In this design, the mixing chamber is fixed to the bottom of the powder container, thereby reducing the distance between the outlet and the mixing chamber. This eliminates the need for a discharge channel at the outlet to guide the milk powder into the mixing chamber, thus avoiding the situation where the discharge channel is blocked by milk powder.
[0029] In summary, this utility model has the following beneficial effects:
[0030] In this invention, the water inlet connector is connected to the water flow path of a water guiding component. The water flow path guides water from the water inlet connector to the powder drop area below the powder outlet. The water flow sprays out from the outlet facing the powder drop area to rinse the powder in the powder drop area clean. Compared with the traditional milk maker where the water flows directly into the water inlet connector, this solution guides the water to the powder drop area through the water flow path, so that the water flow can smoothly rinse the powder on the powder drop area, reduce the dead corners in the mixing chamber, and thus prevent the powder from accumulating in the mixing chamber and causing hygiene problems. Attached Figure Description
[0031] Figure 1 This is a three-dimensional structural diagram of a milk maker according to an embodiment of the present invention.
[0032] Figure 2 This is an exploded structural diagram of a powder bucket according to an embodiment of the present invention.
[0033] Figure 3 This is a three-dimensional structural diagram of the mixing chamber according to an embodiment of the present invention.
[0034] Figure 4 This is a vertical cross-sectional structural diagram of the mixing chamber according to an embodiment of the present invention.
[0035] Figure 5 This is a schematic diagram of the cross-sectional structure of the water inlet pipe of the mixing chamber according to an embodiment of the present invention.
[0036] Figure 6 This is an exploded structural diagram of the water inlet pipe and mixing chamber according to an embodiment of the present invention.
[0037] Figure 7 This is a three-dimensional structural diagram of a water inlet pipe according to an embodiment of the present invention.
[0038] Figure 8 This is a three-dimensional structural diagram of the mixing chamber according to an embodiment of the present invention.
[0039] In the picture:
[0040] 1000, Milk maker; 100, Powder container; 110, Powder outlet; 200, Mixing chamber; 201, Powder drop area; 202, Through hole; 210, Mounting groove; 220, Limiting flange; 230, Limiting groove; 240, Water inlet; 210, Liquid outlet; 300, Powder baffle; 400, Distributor plate; 500, Water inlet connector; 600, Water pipe; 610, Water flow path; 620, Water outlet; 630, Straight limiting surface; 640, Round pipe section; 650, Irregularly shaped pipe section; 660, Limiting protrusion; 670, Sealing ring. Detailed Implementation
[0041] The present invention will be further described below with reference to the accompanying drawings.
[0042] This embodiment discloses a formula maker 1000, referring to... Figure 1 The milk powder maker 1000 includes a powder container 100 and a mixing chamber 200. The powder container 100 is used to store milk powder. The mixing chamber 200 is connected below the powder container 100 and is connected to a water tank. The powder container 100 can quantitatively add milk powder into the mixing chamber 200. Water from the water tank enters the mixing chamber 200, mixes with the milk powder, and is then discharged from the mixing chamber 200 for the user to use.
[0043] Reference Figure 1 and Figure 2 The powder container 100 is a cylindrical component with a powder outlet 110 at its bottom for discharging milk powder. A powder baffle 300 is fixedly installed inside the powder container 100, and a distribution disc 400 is rotatably mounted below the baffle 300. The baffle 300 is located above the powder outlet 110, and the distribution disc 400 is coaxially mounted on the inner bottom wall of the powder container 100. The distribution disc 400 has multiple powder troughs. When the powder troughs rotate to a position where they are offset from the powder baffle, milk powder from the powder container 100 enters the powder troughs. When the powder troughs rotate to a position below the powder baffle and aligned with the powder outlet 110, the milk powder in the troughs flows out through the powder outlet 110, thus achieving a quantitative dispensing of milk powder from the powder container 100.
[0044] Reference Figures 1 to 4 The mixing chamber 200 has a through hole 202 that connects to the powder outlet 110, so that the milk powder flowing out of the powder outlet 110 can enter the mixing chamber 200. The inner cavity of the mixing chamber 200 is funnel-shaped, and the bottom of the mixing chamber 200 has a liquid outlet 210 for the prepared milk powder to flow out.
[0045] In this embodiment, the mixing chamber 200 is fixed to the bottom side of the powder container 100 to reduce the distance between the outlet and the mixing chamber 200. After leaving the powder container 100 from the outlet, the milk powder falls directly into the mixing chamber 200. There is no need to provide a discharge channel at the outlet to guide the milk powder into the mixing chamber 200, thus avoiding blockage of the discharge channel due to milk powder. Alternatively, in other embodiments, a discharge channel can be provided between the outlet and the mixing chamber 200 to guide the milk powder into the mixing chamber 200.
[0046] In this embodiment, the powder outlet 110 and the liquid outlet 210 are offset, so that the inner wall of the mixing chamber 200 forms a powder-falling area 201 located below the powder outlet 110. This ensures that the milk powder flowing out of the powder outlet 110 can be fully mixed with water in the mixing chamber 200, and is less likely to flow directly out of the liquid outlet 210. In this embodiment, the powder outlet 110 is specifically located in a rearward part of the mixing chamber 200 (i.e., the part away from the operator), meaning that the powder-falling area 201 is located in the rearward region of the inner wall of the mixing chamber 200. In other embodiments, the powder outlet 110 may also be located in a region of the mixing chamber 200 that is slightly to the left, right, or front, with the corresponding powder-falling area 201 being the region of the mixing chamber 200 located below the powder outlet 110.
[0047] Reference Figure 4 and Figure 5 The mixing chamber 200 is connected to a water inlet connector 500 that communicates with the interior of the mixing chamber 200. The end of the water inlet connector 500 furthest from the mixing chamber 200 is connected to a water tank via a water pipe, so that the pump in the water tank can pump water into the mixing chamber 200 through the water inlet connector 500. Since the operator typically stands in front of the mixing chamber 200 to retrieve the prepared milk powder, in this embodiment, the water inlet connector 500 and the water tank are located behind the mixing chamber 200 to avoid interfering with the operator's work.
[0048] The mixing chamber 200 is equipped with a water guiding component, which contains a water flow path 610. The inlet end of the water flow path 610 is connected to the inlet connector 500, and the outlet end of the water flow path 610 forms an outlet 620, which faces the powder collection area 201. When the formula maker 1000 is preparing formula, the water flow path 610 guides water from the inlet connector 500 to the powder collection area 201 below the powder outlet 110. The water flows out from the outlet 620 facing the powder collection area 201 to rinse the powder collection area 201 clean. Compared to the traditional formula maker 1000 where water flows directly into the inlet connector 500, this embodiment guides the water flow through a water guide component, directing the water flow towards the powder drop area 201 to rinse it. This reduces dead zones in the mixing chamber 200, allowing the water flow to smoothly rinse away the powder drop area 201, thus preventing the powder from accumulating in the mixing chamber 200 and causing hygiene problems.
[0049] In this embodiment, the water-guiding component includes a water-guiding pipe 600, the inner cavity of which forms a water flow path 610. One end of the water-guiding pipe 600 is connected to a water inlet connector 500, and the other end of the water-guiding pipe 600 away from the water inlet connector 500 is open to form the water outlet 620. The water-guiding pipe 600 connects to the water inlet connector 500 to guide the water from the water inlet connector 500 to the powder-falling area 201. Since the tubular water-guiding pipe 600 is only open at one end, the water pressure can be maintained when the water flows through the water-guiding pipe 600, ensuring that the water flowing out of the water outlet 620 has a certain speed to flush the powder-falling area 201.
[0050] In addition, in other embodiments, the water intake component may also be an open trough-shaped component, or the water intake component may also be a closed trough-shaped structure integrally injection molded with the mixing chamber 200.
[0051] In this embodiment, the water inlet pipe 600 is specifically made of silicone tubing, which gives the water inlet pipe 600 a certain degree of flexibility so that the water inlet pipe 600 can be bent so that the water inlet pipe 600 extends along the inner wall of the mixing chamber 200.
[0052] Reference Figure 5 and Figure 6 In this embodiment, an installation groove 210 is provided inside the mixing chamber 200. The installation groove 210 extends along the inner wall of the mixing chamber 200 from the water inlet connector 500 to the powder drop area 201, and the opening of the installation groove 210 faces upward. The water inlet pipe 600 is fitted into the installation groove 210, that is, the water inlet pipe 600 can be placed into the installation groove 210 and the outer wall of the water inlet pipe 600 abuts against the inner wall of the installation groove 210.
[0053] Therefore, the installation groove 210 restricts the position of the water inlet pipe 600, preventing it from swaying in the mixing chamber 200. Simultaneously, the installation groove 210 guides the water inlet pipe 600 to extend along the inner wall of the mixing chamber 200. After one end of the water inlet pipe 600 is connected to the water inlet connector 500, the outlet 620 of the water inlet pipe 600 bends backward, facing the powder-falling area 201. The water inlet pipe 600 extends in an arc shape, conforming to the inner wall of the mixing chamber 200, resulting in a reasonable installation position and minimal pressure loss during water flow.
[0054] In this embodiment, the mounting groove 210 is disposed on the upper inner wall of the mixing chamber 200 so that the outlet 620 of the water pipe 600 is located at a higher position in the mixing chamber 200, and the water flow from the outlet 620 can clean a larger area, further reducing dead corners in milk preparation.
[0055] A limiting flange 220 is provided on the inner wall of the end of the mounting groove 210 away from the water inlet connector 500. The limiting flange 220 blocks the end of the water pipe 600 near the powder drop area 201, making it difficult for the water pipe 600 to shift along its length in the mounting groove 210. The water pipe 600 is installed more stably in the mounting groove 210, thereby ensuring a stable connection between the water pipe 600 and the water inlet connector 500.
[0056] In this embodiment, the outer periphery of the water pipe 600 has a flat limiting surface 630 that fits into the inner wall of the mounting groove 210. By fitting the flat limiting surface 630 into the inner wall of the mounting groove 210, the water pipe 600 is less likely to rotate circumferentially after being installed in the mounting groove 210, and the water pipe 600 is more stable when working.
[0057] Reference Figures 5 to 8 Specifically, the water inlet pipe 600 includes a circular pipe section 640 and a shaped pipe section 650. The outer and inner sides of the circular pipe section 640 are both circular surfaces, and the circular pipe section 640 is connected to the water inlet connector 500. The shaped pipe section 650 is connected to the end of the circular pipe section 640 away from the water inlet connector 500, and the opposite sides of the shaped pipe section 650 are vertically arranged straight limiting surfaces 630. The two side walls of the mounting groove 210 extending along the length direction are straight walls. The two straight limiting surfaces 630 of the shaped pipe section 650 abut against the opposite sides of the mounting groove 210 to circumferentially limit the shaped pipe section 650, thereby preventing the water inlet pipe 600 from rotating relative to the mounting groove 210.
[0058] In this embodiment, the flow area of the end of the water pipe 600 near the powder dropping area 201 is smaller than the flow area of the end of the water pipe 600 near the water inlet connector 500. That is, the flow area of the end of the water pipe 600 near the powder dropping area 201 is reduced, which increases the water flow velocity. This allows the water flowing out of the outlet 620 to better mix the milk powder and enhance the rinsing force on the milk powder in the powder dropping area 201, further reducing milk powder residue.
[0059] Specifically, in this embodiment, the inner diameter of the circular pipe section 640 remains unchanged, and the inner diameter of the end of the irregular pipe section 650 connected to the circular pipe section 640 is the same as the inner diameter of the circular pipe section 640. The equivalent diameter of the irregular pipe section 650 gradually decreases in the direction away from the circular pipe section 640. The water flow in the circular pipe section 640 flows at a constant velocity, while the water flow velocity in the irregular pipe section 650 gradually increases under the same flow rate. The tapered shape of the irregular pipe section 650 also results in less water pressure loss during water flow, which helps to ensure the water outlet speed of the outlet 620.
[0060] In addition, in other embodiments, the water inlet pipe 600 may be a tapered pipe with a gradually decreasing cross-sectional area from one end near the water inlet connector 500 to the other end near the powder drop area 201, or the water inlet pipe 600 may be a water pipe of equal diameter.
[0061] A limiting protrusion 660 protrudes radially outward from one end of the water inlet pipe 600 near the water inlet connector 500. The side of the limiting protrusion 660 facing the water inlet connector 500 is flush with the end face of the circular pipe section 640. A limiting groove 230 is formed inside the mixing chamber 200. The limiting groove 230 is located at the end of the mounting groove 210 facing the water inlet connector 500 and communicates with the mounting groove 210. The limiting protrusion 660 cooperates with the limiting groove 230 to prevent the water inlet pipe 600 from moving axially along the water inlet connector 500. The water inlet pipe 600 is confined within the mixing chamber 200 by the cooperation of the limiting protrusion 660 and the limiting groove 230, thus fixing the water inlet pipe 600 relative to the water inlet connector 500. This installation scheme does not require additional installation parts, and the water inlet pipe 600 is easy to install.
[0062] The side wall of the limiting groove 230 is provided with a water inlet hole 240 that connects to the water inlet connector 500. The end of the water pipe 600 facing the water inlet connector 500 is directly connected to the water inlet hole 240, so that the water pipe 600 is connected to the water inlet connector 500 through the water inlet hole 240.
[0063] A sealing ring 670 is connected to the side of the limiting protrusion 660 facing the water inlet 240. The sealing ring 670 is arranged around the water inlet 240, and the side of the sealing ring 670 away from the limiting protrusion 660 abuts against the side wall of the limiting groove 230. Therefore, when the limiting protrusion 660 is inserted into the limiting groove 230, the sealing ring 670 surrounds the water inlet 240 and abuts against the side wall of the limiting groove 230, making it less likely for water to leak at the connection between the water inlet and the water pipe 600.
[0064] In this embodiment, the sealing ring 670 is made of silicone. The sealing ring 670, the limiting protrusion 660, the round pipe section 640, and the special-shaped pipe section 650 are integrally formed. When installing the water inlet pipe 600, simply insert the water inlet pipe 600 into the installation groove 210 and press the limiting protrusion 660 so that the limiting protrusion 660 is inserted into the limiting groove 230. Under the pressure of the limiting protrusion 660, the sealing ring 670 is pressed against the side wall of the limiting groove 230 on the edge of the water inlet hole 240. The water inlet pipe 600 is convenient to connect with the water inlet connector 500 and the seal is reliable.
[0065] Reference Figure 7 In this embodiment, the water outlet 620 is elongated and vertically positioned, which allows the water flowing out of the water outlet 620 to spread more widely in the vertical direction. This increases the vertical coverage area of the water flow in the powder drop area 201 while maintaining the water pressure of the water outlet 620, further reducing dead corners in milk preparation.
[0066] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A milk frothing machine, characterized in that, The milk maker (1000) includes: A powder container (100) is used to store milk powder, and the bottom of the powder container (100) is provided with a powder outlet (110) for milk powder to flow out. A mixing chamber (200) has its inner cavity aligned with the powder outlet (110). The inner wall of the mixing chamber (200) has a powder drop area (201) located below the powder outlet (110). The mixing chamber (200) is connected to a water inlet connector (500) that communicates with the inner cavity of the mixing chamber (200). A water-guiding component is provided in the mixing chamber (200). The water-guiding component is provided with a water-guiding flow path (610). The water inlet end of the water-guiding flow path (610) is connected to the water inlet connector (500). The water outlet end of the water-guiding flow path (610) forms a water outlet (620). The water outlet (620) is arranged facing the powder falling area (201).
2. A milk frothing machine according to claim 1, characterised in that The water intake component includes a water intake pipe (600), the inner cavity of which forms the water intake flow path (610); one end of the water intake pipe (600) is connected to the water inlet connector (500), and the water outlet (620) is located at the end of the water intake pipe (600) away from the water inlet connector (500).
3. A milk frothing machine according to claim 2, characterised in that, The end of the water inlet pipe (600) near the water inlet connector (500) is provided with a limiting protrusion (660) protruding radially outward. A limiting groove (230) is provided in the mixing chamber (200). The limiting protrusion (660) cooperates with the limiting groove (230) to prevent the water inlet pipe (600) from moving axially along the water inlet connector (500).
4. A milk frothing machine according to claim 3, characterised in that The side wall of the limiting groove (230) is provided with a water inlet hole (240) that connects to the water inlet connector (500). The end of the water pipe (600) facing the water inlet connector (500) is directly opposite to and connected to the water inlet hole (240). A sealing ring (670) is connected to the side of the limiting protrusion (660) facing the water inlet hole (240). The sealing ring (670) is arranged around the water inlet hole (240). The side of the sealing ring (670) away from the limiting protrusion (660) abuts against the side wall of the limiting groove (230).
5. A milk frothing machine according to claim 2, characterised in that An installation groove (210) is provided in the mixing chamber (200). The installation groove (210) extends along the inner wall of the mixing chamber (200) from the water inlet connector (500) to the powder drop area (201). The water pipe (600) is fitted into the installation groove (210).
6. A milk frothing machine according to claim 5, characterised in that, The inner wall of the mounting groove (210) away from the water inlet connector (500) is provided with a limiting flange (220) protruding into the mounting groove (210), and the limiting flange (220) blocks the end of the water pipe (600) near the powder drop area (201).
7. A milk frothing machine according to claim 5, characterised in that, The outer periphery of the water inlet pipe (600) has a flat limiting surface (630) that fits into the inner wall of the mounting groove (210).
8. A milk frothing machine according to claim 2, characterised in that The flow area of one end of the water guide pipe (600) close to the powder falling area (201) is smaller than the flow area of the other end of the water guide pipe (600) close to the water inlet joint (500).
9. A milk frothing machine according to claim 8, characterised in that, The water outlet (620) is in a strip shape, and the water outlet (620) is vertically arranged.
10. A milk frothing machine according to claim 1, characterized in that The mixing bin (200) is fixedly attached to the bottom side of the powder barrel (100).