A milk frother and a coffee machine using the milk frother

Abstract

This utility model relates to a milk frother and a coffee machine using the milk frother, comprising an outer tube with an air inlet on its wall and an inner core. The first end of the outer tube is a steam inlet, and the inner tube has a steam inlet connector extending along its length and communicating with the steam inlet. The inner core is detachably inserted into the outer tube, defining a milk inlet chamber, a milk frothing chamber, and a milk outlet chamber between them. The inner core divides the second end of the outer tube into a milk inlet port corresponding to the milk inlet chamber and a milk outlet port corresponding to the milk outlet chamber. The steam outlet end of the steam inlet connector, the air inlet, the milk outlet of the milk inlet chamber, and the milk inlet of the milk outlet chamber are all fluidly connected to the milk frothing chamber. This utility model, while ensuring the milk frothing function, simplifies the structure of the milk frother, facilitates cleaning, effectively prevents dirt residue in the internal chamber, ensures the cleanliness of the milk frother's interior, and helps to produce high-quality, clean milk froth.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and more particularly to a milk frother and a coffee machine using the milk frother. Background Technology

[0002] Coffee machines are typically equipped with milk frothers to create milk foam. Currently, the most common milk foaming devices for coffee machines on the market mainly use steam to feed milk into a milk frother made based on the "Venturi effect" principle. Milk is drawn into a vacuum chamber, mixed with steam, heated, and foamed. The steam pressure then delivers the foam to the outside of the machine.

[0003] Milk foam generation is primarily accomplished by the foaming core, which typically has a main steam channel, an air channel, and a milk channel. When steam flows at high speed through the mixing and foaming chamber from the main steam channel, it causes air and milk to enter the mixing and foaming chamber through their respective channels, generating milk foam within the chamber, which is then discharged from the coffee machine through the milk foam tube. For example, Chinese utility model patent number ZL202322045052.8 (authorization announcement number CN 220608120 U). Because milk, air, and steam all need to enter the foaming core to complete the mixing and foaming process, and the local diameter of the channels is extremely narrow, and the foaming core is generally a one-piece structure, cleaning the inside of the foaming core is quite difficult, leading to dirt residue inside and affecting the quality of the milk foam. Summary of the Invention

[0004] The first technical problem to be solved by this utility model is to provide a milk frothing generator that is simple in structure and easy to clean, in contrast to the existing technology.

[0005] The second technical problem to be solved by this utility model is to provide a milk foam generator that is simple in structure, easy to clean, and capable of producing high-quality milk foam, in contrast to the prior art.

[0006] The third technical problem to be solved by this utility model is to provide a coffee machine with the above-mentioned milk frother, in contrast to the prior art.

[0007] The technical solution adopted by this utility model to solve at least one of the above-mentioned technical problems is as follows: a milk frothing generator, characterized in that it includes an outer tube with an air inlet hole on its wall and an inner core. The first end of the outer tube is a steam inlet for steam to enter, and the outer tube has an inlet connector extending along its own length and communicating with the steam inlet. The inner core is detachably inserted into the outer tube and defines a milk inlet chamber, a milk frothing chamber, and a milk outlet chamber between the two. At the same time, the inner core divides the second end of the outer tube into a milk inlet port corresponding to the milk inlet chamber and a milk outlet port corresponding to the milk outlet chamber.

[0008] Furthermore, the steam outlet end, air inlet, milk outlet of the milk inlet chamber, and milk inlet of the milk outlet chamber are in fluid communication with the aforementioned milk foam generating chamber.

[0009] Furthermore, a mixing chamber is defined between the inner core and the outer tube, allowing air from the aforementioned air inlet to enter. This mixing chamber has a milk outlet on one side and a liquid outlet on the other. The milk outlet connects the milk inlet chamber and the mixing chamber, while the liquid outlet connects the mixing chamber and the milk foam generating chamber. Under the entrainment of the steam flow, air enters the mixing chamber through the air inlet, while milk in the milk inlet chamber enters through the milk inlet. The two are pre-mixed in the mixing chamber before entering the milk foam generating chamber, which helps improve the quality of the milk foam.

[0010] Furthermore, the milk inlet chamber and the air mixing chamber are arranged side by side along the longitudinal direction of the outer tube, while the air mixing chamber and the milk foam generating chamber are arranged side by side along the transverse direction of the outer tube. This allows milk foam to flow into the air mixing chamber from bottom to top, facilitating control of the milk flow rate entering the air mixing chamber. This promotes thorough mixing of milk and air within the air mixing chamber. Meanwhile, the mixture flows relatively smoothly into the milk foam generating chamber laterally, avoiding the influence of gravity on the milk and further ensuring effective mixing of milk and air.

[0011] Furthermore, the outer tube is provided with a transverse wall, and the steam inlet connector protrudes from the second end of the outer tube onto this transverse wall. The inner core is a long strip-shaped block that extends along the length of the outer tube and matches the inner cavity of the outer tube to restrict the radial movement of the inner core within the outer tube. Additionally, a milk foam generating groove is recessed on the end face of the first end of the inner core, abutting against the aforementioned transverse wall longitudinally, and the steam inlet connector is inserted into the milk foam generating groove to define the milk foam generating chamber. This facilitates the construction of the steam inlet connector inside the outer tube and the definition of the milk foam generating chamber between the outer tube and the inner core, while also facilitating communication between the steam inlet connector and the milk foam generating chamber.

[0012] Furthermore, the steam inlet connector is circumferentially engaged in the aforementioned milk foam generating groove, and the two sides of the second end of the inner core extend laterally outward to form limiting protrusions, each limiting protrusion abutting against the end edge of the second end of the outer tube. This helps to ensure the sealing of the milk foam generating chamber and the airtightness of the connection between the steam inlet connector and the milk foam generating chamber, and also helps to achieve a stable connection between the outer tube and the inner core.

[0013] Furthermore, a mixing groove is recessed on the side of the first end of the inner core. This mixing groove and the corresponding pipe wall of the outer tube define the mixing chamber. The liquid outlet is disposed on the groove wall shared by the mixing groove and the milk foam generating groove. This allows a mixing chamber to be defined between the outer tube and the inner core, and the mixed liquid in the mixing chamber can smoothly enter the milk foam generating chamber through the liquid outlet.

[0014] Furthermore, a milk inlet groove is recessed along the length of one side of the second end of the inner core. This milk inlet groove extends to the second end of the inner core and defines the milk inlet chamber with the corresponding wall of the outer tube. The milk outlet hole is provided through the shared wall of the milk inlet groove and the air mixing groove. This allows a milk inlet chamber to be defined between the outer tube and the inner core, and the milk in the milk inlet chamber can smoothly enter the air mixing chamber through the milk outlet hole.

[0015] Furthermore, a milk outlet groove is recessed along the length of the other side of the second end of the inner core. This milk outlet groove extends to the second end of the inner core and defines the milk outlet cavity with the corresponding tube wall of the outer tube. The milk outlet groove and the milk foam generating groove are arranged side by side along the longitudinal direction of the inner core, and the milk inlet hole is provided through the shared groove wall. This allows a milk outlet cavity to be defined between the outer tube and the inner core, and the milk foam generated in the milk foam generating cavity can smoothly enter the milk outlet cavity through the milk outlet hole.

[0016] Furthermore, small milk outlet holes are arranged on the wall of the outer tube corresponding to the milk outlet chamber. By arranging the small milk outlet holes, on the one hand, it can prevent milk foam from being discharged from the milk outlet port of the milk outlet chamber, thus preventing the foam from defoaming; on the other hand, the milk foam formed can be made denser and finer by passing through the small milk outlet holes, which helps to improve the quality of milk foam.

[0017] Furthermore, a slot is longitudinally recessed on the side of the first end of the inner core, located above the mixing groove. This slot connects the air inlet and the mixing groove. This allows for communication between the air inlet and the mixing chamber, and also enables air to be jetted into the mixing chamber, which improves the mixing effect between air and milk.

[0018] The technical solution adopted to further solve the third technical problem mentioned above is: a coffee machine, characterized in that it includes a milk frother as described above.

[0019] Furthermore, the device includes a main unit equipped with a steam pipe for steam output, which can be detachably connected to the first end of the aforementioned outer pipe. This facilitates the assembly and disassembly of the milk frother and the main unit, and allows the steam pipe on the main unit to be used independently when the milk frother is not in use.

[0020] Compared with existing technologies, the advantages of this invention are as follows: The milk frother of this invention includes an outer tube and an inner core, which are detachably assembled. This simple structure facilitates disassembly and cleaning. Furthermore, the milk inlet chamber, milk frothing chamber, and milk outlet chamber are all defined by the outer tube and inner core. This allows for thorough cleaning of each chamber during disassembly, preventing dirt residue. With the outer tube and inner core assembled, the steam outlet of the steam inlet connector, the air inlet, the milk outlet of the milk inlet chamber, and the milk inlet of the milk outlet chamber are all fluidly connected to the milk frothing chamber. This allows milk, air, and steam to enter the milk frothing chamber under the entrainment of the steam flow, forming milk foam. Therefore, this invention, while ensuring the milk frothing function, simplifies the structure of the milk frother, facilitates cleaning, effectively prevents dirt residue in the internal chambers, and ensures the cleanliness of the milk frother's interior, contributing to the preparation of high-quality, clean milk foam. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the coffee machine in an embodiment of the present invention;

[0022] Figure 2 This is a partial exploded view of the coffee machine in an embodiment of the present invention (with the milk frother disassembled);

[0023] Figure 3 This is a schematic diagram of the structure of the milk frothing generator in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 A structural diagram from another direction;

[0025] Figure 5 This is a cross-sectional view of the milk frothing generator in an embodiment of this utility model;

[0026] Figure 6 This is an exploded view of the structure of the milk frothing generator in this embodiment of the present invention;

[0027] Figure 7 for Figure 6 A structural diagram from another direction;

[0028] Figure 8 This is a schematic diagram of the structure of the outer tube in an embodiment of this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] like Figure 1 and Figure 2 As shown, a coffee machine includes a main unit 1 and a milk frother 2. Figures 3-8 As shown, the milk frother 2 includes an outer tube 3 with an air inlet 36 on its wall and an inner core 4. The first end of the outer tube 3 is a steam inlet 31 for steam to enter, and the outer tube 3 has a steam inlet connector 34 formed inside, extending along its length and communicating with the steam inlet 31. The inner core 4 is detachably inserted into the outer tube 3, defining a milk inlet chamber 7, a milk frothing chamber 5, and a milk outlet chamber 8 between them. Simultaneously, the inner core 4 divides the second end of the outer tube 3 into a milk inlet port 321 corresponding to the milk inlet chamber 7 and a milk outlet port 322 corresponding to the milk outlet chamber 8. Furthermore, the steam outlet end of the steam inlet connector 34, the air inlet 36, the milk outlet port 45 of the milk inlet chamber 7, and the milk inlet port 47 of the milk outlet chamber 8 are all in fluid communication with the milk frothing chamber 5.

[0032] The milk frother 2 of this invention includes an outer tube 3 and an inner core 4, which are detachably assembled. This design is simple in structure and easy to disassemble and clean. The milk inlet chamber 7, milk frothing chamber 5, and milk outlet chamber 8 of the milk frother 2 are all defined by the outer tube 3 and the inner core 4. This allows for thorough cleaning of each chamber during disassembly, preventing dirt residue. The steam outlet end of the steam inlet connector 34, the air inlet 36, the milk outlet 45 of the milk inlet chamber 7, and the milk inlet 47 of the milk outlet chamber 8 are all fluidly connected to the milk frothing chamber 5. Under the entrainment of the steam flow, milk, air, and steam can all enter the milk frothing chamber 5 to form milk foam. Therefore, this invention, while ensuring the milk frothing function, achieves a simple structure for the milk frother 2, facilitates cleaning, and effectively prevents dirt residue from remaining in the internal chambers.

[0033] like Figure 5 As shown, preferably, a mixing chamber 6 is further defined between the inner core 4 and the outer tube 3, allowing air from the air inlet 36 to enter. The mixing chamber 6 has a milk outlet 45 on one side and a liquid outlet 46 on the other side. The milk outlet 45 connects the milk inlet chamber 7 and the mixing chamber 6, while the liquid outlet 46 connects the mixing chamber and the milk foam generating chamber 5. Under the entrainment of the steam flow, air enters the mixing chamber 6 through the air inlet 36, while milk in the milk inlet chamber 7 enters the mixing chamber 6 through the milk inlet 47. The two are pre-mixed in the mixing chamber 6 before entering the milk foam generating chamber 5, which helps to improve the quality of the formed milk foam. More preferably, the milk inlet chamber 7 and the mixing chamber 6 are arranged side-by-side along the longitudinal direction of the outer tube 3, while the mixing chamber 6 and the milk foam generating chamber 5 are arranged side-by-side along the transverse direction of the outer tube 3. In this way, the milk foam flows from bottom to top into the mixing chamber 6, which makes it easier to control the flow rate of the milk entering the mixing chamber 6. This facilitates the thorough mixing of milk and air in the mixing chamber 6. Meanwhile, the mixture flows relatively smoothly into the milk foam generating chamber 5 in the lateral direction, avoiding the influence of gravity on the milk and helping to ensure the mixing effect of milk and air.

[0034] like Figure 5 , Figure 6 as well as Figure 8 As shown, the outer pipe 3 is provided with a transverse wall 33, and the steam inlet connector 34 protrudes from the second end of the outer pipe 3 onto the transverse wall 33 (e.g., Figure 8 (As shown). The inner core 4 is a long strip-shaped block that extends along the length of the outer tube 3 and matches the inner cavity of the outer tube 3 to restrict the radial movement of the inner core 4 within the outer tube 3. Furthermore, a longitudinally extending milk foam generating groove 41 is recessed on the end face of the first end of the inner core 4. This end face abuts against the transverse wall 33 longitudinally, and the steam inlet connector 34 is inserted into the milk foam generating groove 41 to define the milk foam generating chamber 5. This facilitates the construction of the steam inlet connector 34 inside the outer tube 3 and the definition of the milk foam generating chamber 5 between the outer tube 3 and the inner core 4. It also facilitates the connection between the steam inlet connector 34 and the milk foam generating chamber 5. In this invention, when steam flows to the steam outlet of the steam inlet connector 34 and enters the milk foam generating chamber 5, a Venturi effect occurs in the milk foam generating chamber 5, thereby drawing the milk-air mixture in the mixing chamber 6 into the milk foam generating chamber 5. The milk, air, and steam are fully mixed in the milk foam generator 2 to form milk foam. Preferably, in this embodiment, the steam inlet connector 34 is circumferentially engaged in the milk foam generating groove 41, and the two sides of the second end of the inner core 4 extend laterally outward to form limiting protrusions 49, each limiting protrusion 49 abutting against the end edge of the second end of the outer tube 3. This helps to ensure the sealing of the milk foam generating chamber 5 and the airtightness of the connection between the steam inlet connector 34 and the milk foam generating chamber 5, and also helps to achieve a stable connection between the outer tube 3 and the inner core 4.

[0035] like Figure 6As shown, a mixing groove 42 is recessed on the side of the first end of the inner core 4. This mixing groove 42 and the pipe wall corresponding to the outer tube 3 define the mixing chamber 6. The liquid outlet 46 is disposed in the groove wall shared by the mixing groove 42 and the milk foam generating groove 41. This allows the mixing chamber 6 to be defined between the outer tube 3 and the inner core 4, and the mixed liquid in the mixing chamber 6 can smoothly enter the milk foam generating chamber 5 through the liquid outlet 46. Figure 6 and Figure 7 As shown, a milk inlet groove 43 is recessed along the length direction on one side of the second end of the inner core 4. This milk inlet groove 43 extends to the second end of the inner core 4 and defines the milk inlet chamber 7 with the corresponding wall of the outer tube 3. A milk outlet hole 45 is provided on the shared wall of the milk inlet groove 43 and the air mixing groove 42, thereby defining the milk inlet chamber 7 between the outer tube 3 and the inner core 4. The milk in the milk inlet chamber 7 can smoothly enter the air mixing chamber 6 through the milk outlet hole 45. Furthermore, as... Figure 7 As shown, a milk outlet groove 44 is recessed along the length direction on the other side of the second end of the inner core 4. The milk outlet groove 44 extends to the second end of the inner core 4 and defines the milk outlet cavity 8 with the pipe wall corresponding to the outer tube 3. The milk outlet groove 44 and the milk foam generating groove 41 are arranged side by side along the longitudinal direction of the inner core 4, and the milk inlet hole 47 is provided through the groove wall shared by the two. Thus, the milk outlet cavity 8 can be defined between the outer tube 3 and the inner core 4, and the milk foam formed in the milk foam generating cavity 5 can smoothly enter the milk outlet cavity 8 through the milk outlet hole 45. In this embodiment, the channel of the milk inlet hole 47 extends longitudinally and is directly opposite the steam inlet connector 34. The diameter of the hole is much larger than the diameter of the interface of the steam inlet connector 34. Furthermore, the channel of the milk inlet hole 47 increases uniformly along the longitudinal direction towards the milk outlet cavity 8, thereby buffering the milk foam and preventing the milk foam from defoaming when it enters the milk outlet cavity 8 from the milk foam generating cavity 5.

[0036] like Figure 4 , Figure 5 as well as Figure 7 As shown, the outer tube 3 has small outlet holes 35 arranged on the tube wall corresponding to the milk outlet chamber 8. By arranging the outlet holes 35, on the one hand, it can prevent the milk foam from contacting the milk when it is discharged from the milk outlet port 322 of the milk outlet chamber 8, thus preventing the foam from defoaming; on the other hand, the milk foam formed can be made denser and finer by passing through the outlet holes 35, which helps to improve the quality of the milk foam.

[0037] like Figure 5 and Figure 6 As shown, a slot 48 is longitudinally recessed on the side surface of the first end of the inner core 4, located above the air mixing groove 42. This slot 48 is used to connect the air inlet 36 and the air mixing groove 42 (e.g., Figure 5(As shown). On the one hand, it connects the air inlet 36 with the mixing chamber 6, and on the other hand, it allows air to be injected into the mixing chamber 6 in the form of a jet, which is beneficial to improving the mixing effect of air and milk.

[0038] Furthermore, in this embodiment, as Figure 1 and Figure 2 As shown, the main unit 1 is equipped with a steam pipe 11 for steam output, which can be detachably connected to the first end of the outer pipe 3 (e.g., threaded connection, snap-fit, etc.). This facilitates the assembly and disassembly of the milk frother 2 and the main unit 1, and allows the steam pipe 11 on the main unit 1 to be used independently when the milk frother 2 is not in use.

[0039] When in operation, the milk frother 2 is installed on the steam pipe 112, and the milk frother extends vertically. The lower end of the milk frother 2 is inserted into the milk. Steam is injected into the milk frother 2 through the steam pipe 11. When the steam enters the milk frother 5 through the steam inlet connector 34, the Venturi effect occurs, so that milk, air and steam all enter the milk frother 5 to generate milk foam.

[0040] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A milk frother, characterized in that, The device includes an outer tube (3) with an air inlet (36) on its wall and an inner core (4). The first end of the outer tube (3) is a steam inlet (31) for steam to enter, and the outer tube (3) has a steam inlet connector (34) that extends along its length and communicates with the steam inlet (31). The inner core (4) is detachably inserted into the outer tube (3) and defines a milk inlet chamber (7), a milk foam generating chamber (5), and a milk outlet chamber (8) between the two. At the same time, the inner core (4) divides the second end of the outer tube (3) into a milk inlet port (321) corresponding to the milk inlet chamber (7) and a milk outlet port (322) corresponding to the milk outlet chamber (8). Furthermore, the steam outlet end of the steam inlet connector (34), the air inlet hole (36), the milk outlet hole (45) of the milk inlet chamber (7), and the milk inlet hole (47) of the milk outlet chamber (8) are respectively in fluid communication with the milk foam generating chamber (5).

2. The milk frother as described in claim 1, characterized in that, The inner core (4) and the outer tube (3) also define a mixing chamber (6) for air to enter from the air inlet (36). The mixing chamber (6) has a milk outlet (45) on one side and a liquid outlet (46) on the other side. The milk outlet (45) is used to connect the milk inlet chamber (7) and the mixing chamber (6), while the liquid outlet (46) is used to connect the mixing chamber (6) and the milk foam generating chamber (5).

3. The milk frother as described in claim 2, characterized in that, The milk inlet chamber (7) and the air mixing chamber (6) are arranged side by side along the longitudinal direction of the outer tube (3), while the air mixing chamber (6) and the milk foam generating chamber (5) are arranged side by side along the transverse direction of the outer tube (3).

4. The milk frother as described in claim 2 or 3, characterized in that, The outer tube (3) is provided with a transverse wall (33) in the middle. The steam inlet connector (34) protrudes from the second end of the outer tube (3) on the transverse wall (33). The inner core (4) is a long strip-shaped block that extends along the length of the outer tube (3) and matches the inner cavity of the outer tube (3) to restrict the radial movement of the inner core (4) in the outer tube (3). Furthermore, a milk foam generating groove (41) is recessed on the end face of the first end of the inner core (4). This end face abuts against the transverse wall (33) longitudinally, and the steam inlet connector (34) is inserted into the milk foam generating groove (41) to define the milk foam generating chamber (5).

5. The milk frother as described in claim 4, characterized in that, The steam inlet connector (34) is circumferentially engaged in the milk foam generating groove (41), and the two sides of the second end of the inner core (4) extend outward to form limiting protrusions (49), and each limiting protrusion (49) abuts against the end edge of the second end of the outer tube (3).

6. The milk frother as described in claim 4, characterized in that, A gas mixing groove (42) is recessed on the side of the first end of the inner core (4). The gas mixing groove (42) and the pipe wall corresponding to the outer tube (3) define the gas mixing chamber (6). The liquid outlet (46) is disposed on the groove wall shared by the gas mixing groove (42) and the milk foam generating groove (41).

7. The milk frother as described in claim 6, characterized in that, A milk inlet groove (43) is recessed along the length direction on one side of the second end of the inner core (4). The milk inlet groove (43) extends to the second end of the inner core (4) and defines the milk inlet cavity (7) with the pipe wall corresponding to the outer tube (3). The milk outlet hole (45) is provided on the groove wall shared by the milk inlet groove (43) and the air mixing groove (42).

8. The milk frother as described in claim 7, characterized in that, The other side of the second end of the inner core (4) is provided with a milk outlet groove (44) along the length direction. The milk outlet groove (44) extends to the second end of the inner core (4) and defines the milk outlet cavity (8) with the tube wall corresponding to the outer tube (3). The milk outlet groove (44) and the milk foam generating groove (41) are arranged side by side along the longitudinal direction of the inner core (4), and the milk inlet hole (47) is provided on the groove wall shared by the two.

9. The milk frother as described in any one of claims 1 to 3, characterized in that, The outer tube (3) has small holes (35) on its wall corresponding to the milk outlet chamber (8).

10. The milk frother as described in claim 6, characterized in that, The inner core (4) has a slot (48) recessed longitudinally on the side of the first end, which is located above the mixing groove (42). The slot (48) is used to connect the air inlet (36) and the mixing groove (42).

11. A coffee machine, characterized in that, Includes the milk frother (2) as described in any one of claims 1 to 10.

12. The coffee machine as described in claim 11, characterized in that, Includes a main unit (1) on which a steam pipe (11) for steam output is installed, and the steam pipe (11) can be detachably connected to the first end of the outer pipe (3) of the milk frother (2).

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