Milk foam generating device and coffee machine

Abstract

The utility model discloses a milk foam generating device and a coffee machine. The milk foam generating device comprises a milk box, an upper cover and a foaming assembly. The upper cover is detachably arranged at an opening in the upper end of the milk box; the foaming assembly comprises a foam maker, a steam inlet pipe, a milk inlet pipe, a connecting pipe and a foam outlet pipe; the foam maker is arranged in the upper cover and is provided with a steam inlet, an air inlet, a milk inlet and a foam outlet; one end of the steam inlet pipe extends into the upper cover and is connected with the steam inlet, and the other end of the steam inlet pipe is exposed out of the upper cover; one end of the milk inlet pipe is connected with the milk inlet, and the other end of the milk inlet pipe extends into the milk box; the connecting pipe is arranged in the upper cover, one end of the connecting pipe is connected with the bubble outlet, and the connecting pipe is provided with a bent section; one end of the bubble outlet pipe extends into the upper cover and is connected with the other end of the connecting pipe, and the other end of the bubble outlet pipe is exposed out of the upper cover; the air inlet is communicated with the outside. The connecting pipe with the bent section is arranged between the foam maker and the foam outlet pipe, so that prepared large milk foam becomes small milk foam when passing through the bent section, and the foaming effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, specifically, a milk froth generating device and coffee machine. BACKGROUND

[0002] In the related art, the milk froth generating device utilizes the Venturi effect to prepare milk froth, but the milk froth prepared by this method is relatively large, resulting in an unsatisfactory frothing effect.

[0003] Therefore, the prior art needs to be improved and developed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a milk froth generating device and coffee machine, which can improve the frothing effect.

[0005] In a first aspect, the utility model provides a milk froth generating device, which comprises a milk tank, an upper cover and a frothing assembly; the upper cover is detachably arranged at the upper end opening of the milk tank; the frothing assembly comprises a frothing device, a steam inlet pipe, a milk inlet pipe, a connecting pipe and a froth outlet pipe; the frothing device is arranged in the upper cover, and the frothing device has a steam inlet, an air inlet, a milk inlet and a froth outlet; one end of the steam inlet pipe extends into the upper cover and is connected with the steam inlet, and the other end of the steam inlet pipe is exposed outside the upper cover; one end of the milk inlet pipe is connected with the milk inlet, and the other end of the milk inlet pipe extends into the interior of the milk tank; the connecting pipe is arranged in the upper cover, one end of the connecting pipe is connected with the froth outlet, and the connecting pipe has a bending section; one end of the froth outlet pipe extends into the upper cover and is connected with the other end of the connecting pipe, and the other end of the froth outlet pipe is exposed outside the upper cover; the air inlet is in communication with the outside.

[0006] According to an embodiment of the utility model, the upper cover is provided with an adapter, the inlet of the adapter is connected with the other end of the connecting pipe, one end of the froth outlet pipe is provided with a spherical connector, and the spherical connector is connected with the outlet of the adapter.

[0007] According to an embodiment of the utility model, the inlet of the adapter and the outlet of the adapter form an angle a, and 0° < a < 180°.

[0008] According to an embodiment of the utility model, the outlet of the adapter is provided with a pressing plate, and the pressing plate is sleeved on the spherical connector.

[0009] According to an embodiment of the utility model, the spherical connector and the pressing plate are both provided with sealing rings, the sealing ring on the spherical connector abuts against the pressing plate, and the sealing ring on the pressing plate abuts against the adapter.

[0010] According to an embodiment of the utility model, the upper cover is provided with a mounting assembly, the upper cover is detachably arranged at the upper end opening of the milk tank through the mounting assembly, the mounting assembly comprises a moving plate, a rotating plate, a first elastic member and a second elastic member, the moving plate is slidably arranged in the upper cover, one end of the moving plate is provided with a moving pressing portion and a first buckle portion which can be exposed to the upper cover, the rotating plate is rotatably arranged in the upper cover through a rotating shaft, one end of the rotating plate is provided with a second buckle portion which can be exposed to the upper cover, and the other end of the rotating plate abuts against the other end of the moving plate, one end of the first elastic member abuts against the inner side wall of the upper cover, the other end of the first elastic member abuts against the moving plate, one end of the second elastic member abuts against the inner side wall of the upper cover, and the other end of the second elastic member abuts against the other end of the rotating plate, when the upper cover is arranged at the upper end opening of the milk tank, the first buckle portion and the second buckle portion are arranged in two opposite fixing clamping positions of the sidewall of the milk tank.

[0011] According to an embodiment of the utility model, the upper cover is provided with a mounting assembly, the upper cover is detachably arranged at the upper end opening of the milk tank through the mounting assembly, the mounting assembly comprises a moving plate, a rotating plate, a first elastic member and a second elastic member, the moving plate is slidably arranged in the upper cover, one end of the moving plate is provided with a moving pressing portion and a first buckle portion which can be exposed to the upper cover, the rotating plate is rotatably arranged in the upper cover through a rotating shaft, one end of the rotating plate is provided with a second buckle portion which can be exposed to the upper cover, and the other end of the rotating plate abuts against the other end of the moving plate, one end of the first elastic member abuts against the inner side wall of the upper cover, the other end of the first elastic member abuts against the moving plate, one end of the second elastic member abuts against the inner side wall of the upper cover, and the other end of the second elastic member abuts against the other end of the rotating plate, when the upper cover is arranged at the upper end opening of the milk tank, the first buckle portion and the second buckle portion are arranged in two opposite fixing clamping positions of the sidewall of the milk tank.

[0012] According to an embodiment of the utility model, the milk froth generating device further comprises a connecting assembly, the connecting assembly is arranged on the upper cover or the milk tank, and the connecting assembly is used for connecting the milk froth generating device to the coffee machine.

[0013] According to an embodiment of the utility model, the connecting assembly comprises a driving member, an inserting member and a reset member, one end of the driving member is located in the upper cover, the other end of the driving member is exposed to the upper cover, one end of the inserting member is located in the upper cover and connected with the driving member, the other end of the inserting member is exposed to the upper cover and provided with a limiting portion, and the reset member is arranged in the upper cover, one end of the reset member abuts against the inserting member, and the other end of the reset member abuts against a fixed plate fixedly arranged in the upper cover.

[0014] In the second aspect, the utility model provides a kind of coffee machine, including main body, further including the milk froth generating device of the first aspect described above, and the milk froth generating device is detachably installed on the main body.

[0015] The milk froth generating device and the coffee machine of the utility model make the large milk froth generated by the frothing device be cut into small milk froth when passing the bending section of the connecting pipe during flowing to the froth outlet pipe, so that the frothing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0017] Figure 1 Structure diagram of milk froth generating device in the embodiment of the utility model Figure 1 ;

[0018] Figure 2 Structure diagram of milk froth generating device in the embodiment of the utility model Figure 2 ;

[0019] Figure 3 Structure diagram of frothing assembly in the embodiment of the utility model

[0020] Figure 4 Sectional view of frothing assembly in the embodiment of the utility model

[0021] Figure 5 Sectional view of milk froth generating device in the embodiment of the utility model Figure 1 ;

[0022] Figure 6 Sectional view of milk froth generating device in the embodiment of the utility model Figure 2 ;

[0023] Figure 7 Exploded view of milk froth generating device in the embodiment of the utility model

[0024] Figure 8 Structure diagram of coffee machine in the embodiment of the utility model

[0025] Explanation of reference signs:

[0026] 1, milk tank; 11, fixed clamping position; 2, upper cover; 3, frothing assembly; 31, frother; 311, steam inlet; 312, air inlet; 313, milk inlet; 314, froth outlet; 32, steam inlet pipe; 33, milk inlet pipe; 34, connecting pipe; 341, bending section; 35, froth outlet pipe; 36, adapter; 37, spherical connector; 38, pressing plate; 39, sealing ring; 310, air inlet adjusting piece; 4, mounting assembly; 41, moving plate; 411, moving pressing part; 412, first clamping part; 42, rotating plate; 421, second clamping part; 43, first elastic member; 44, second elastic member; 5, connecting assembly; 51, driving member; 52, insertion piece; 521, limiting part; 53, reset member; 54, fixed plate; 100, main body. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described herein below with reference to a few drawings. Details inherent in the art will be described in the following description. However, it is to be understood that the application is not limited in scope to the particulars of the description given herein. In other words, it is contemplated that the application will cover all combinations of features described herein and / or in the accompanying drawings, and / or various modification and equivalent arrangements theron.

[0028] It should be noted that the terms "first", "second", and the like, as used herein, are intended to modify various embodiments of the application, without necessarily limiting the application to a particular sequence of steps or order of describing the components. It will be understood by those within the art that, in general, terms used herein, and especially technical or scientific terms have their usual and customary meaning.

[0029] In addition, the description herein such as "first", "second", and the like, is merely intended to differentiate one technical feature from another technical feature, and does not particularly indicate the order or sequence of the technical features, nor limit the application. It is merely for the purpose of differentiating components or operations described by the same technical terms, and should not be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the application.

[0030] In order to further understand the content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows in conjunction with the drawings:

[0031] In the first aspect, as Figure 1 , Figure 2 and Figure 3As shown, this utility model provides a milk frothing device, including a milk tank 1, a top cover 2, and a frothing assembly 3. The top cover 2 is detachably mounted at the upper opening of the milk tank 1. The frothing assembly 3 includes a frother 31, a steam inlet pipe 32, a milk inlet pipe 33, a connecting pipe 34, and a frothing outlet pipe 35. The frother 31 is disposed inside the top cover 2 and has a steam inlet 311, an air inlet 312, a milk inlet 313, and a frothing outlet 314. One end of the steam inlet pipe 32 extends into the top cover 2 and connects to the steam inlet 311, while the other end of the steam inlet pipe 32 protrudes from the top cover 2. One end of the milk inlet pipe 33 is connected to the milk inlet 313, and the other end of the milk inlet pipe 33 extends into the interior of the milk tank 1. The connecting pipe 34 is disposed inside the top cover 2, with one end connected to the frothing outlet 314, and the connecting pipe 34 has a bent section 341. One end of the bubble outlet tube 35 extends into the upper cover 2 and connects to the other end of the connecting tube 34, while the other end of the bubble outlet tube 35 protrudes from the upper cover 2. The air inlet 312 is connected to the outside.

[0032] In practical applications, the milk frothing device is installed on a coffee machine. High-temperature steam generated by the coffee machine enters the frother 31 through the steam inlet pipe 32 and steam inlet 311. Outside air enters the frother 31 through the air inlet 312. Milk in the milk tank 1, under the Venturi effect, enters the frother 31 through the milk inlet pipe 33 and milk inlet 313, mixing with the high-temperature steam and air to form milk foam. The milk foam is then discharged through the outlet pipe 35 via the outlet 314 and connecting pipe 34. When the milk foam passes through the bend section 341 of the connecting pipe 34, it collides with the side wall of the bend section 341, breaking the foam into smaller bubbles, resulting in finer foam and improved frothing effect. Specifically, the connecting pipe 34 can be a U-shaped pipe.

[0033] like Figure 3 As shown, in some preferred embodiments, the upper cover 2 is provided with an adapter 36. The inlet of the adapter 36 is connected to the other end of the connecting pipe 34, and one end of the bubble outlet pipe 35 has a ball joint 37, which is connected to the outlet of the adapter 36. This technical solution allows the bubble outlet pipe 35 to rotate in multiple directions and angles, making it more convenient to use.

[0034] like Figure 4 As shown, in some preferred embodiments, the inlet and outlet of the adapter 36 form an angle α, where 0° < α < 180°. This technical solution allows the milk foam to be further cut as it passes through the adapter 36, resulting in finer foam and further improving the foaming effect. Preferably, α = 90°.

[0035] like Figure 3As shown in the drawings, in some preferred embodiments, the outlet of the adapter 36 is provided with a pressing plate 38, which is sleeved on the spherical connector 37. Through this technical solution, the spherical connector 37 can be firmly installed on the adapter 36.

[0036] As shown in the drawings, Figure 4 In some preferred embodiments, the spherical connector 37 and the pressing plate 38 are both sleeved with a sealing ring 39, the sealing ring 39 on the spherical connector 37 abuts against the pressing plate 38, and the sealing ring 39 on the pressing plate 38 abuts against the adapter 36. Through this technical solution, the gap between the spherical connector 37 and the pressing plate 38 and the gap between the pressing plate 38 and the adapter 36 can be sealed, so as to avoid the milk foam from leaking through the gap between the spherical connector 37 and the pressing plate 38 and the gap between the pressing plate 38 and the adapter 36.

[0037] As shown in the drawings, Figure 5 , Figure 6 and Figure 7 In some preferred embodiments, the foaming assembly 3 further comprises an air inlet adjusting member 310, one end of which penetrates the foaming device 31 and extends into the air inlet 312, and the other end of which is exposed outside the upper cover 2. In specific applications, by adjusting the air inlet adjusting member 310, the amount of air entering the air inlet 312 can be changed, so as to change the texture of the milk foam.

[0038] As shown in the drawings, Figure 5 , Figure 6 and Figure 7 In some preferred embodiments, the upper cover 2 is provided with a mounting assembly 4, and the upper cover 2 is detachably arranged at the upper end opening of the milk tank 1 through the mounting assembly 4. Specifically, the mounting assembly 4 comprises a moving plate 41, a rotating plate 42, a first elastic member 43 and a second elastic member 44. The moving plate 41 is slidingly arranged in the upper cover 2, and one end of the moving plate 41 is provided with a moving pressing portion 411 and a first clamping portion 412 which can be exposed outside the upper cover 2. The rotating plate 42 is rotatably arranged in the upper cover 2 through a rotating shaft, and one end of the rotating plate 42 is provided with a second clamping portion 421 which can be exposed outside the upper cover 2, and the other end of the rotating plate 42 abuts against the other end of the moving plate 41. One end of the first elastic member 43 abuts against the inner side wall of the upper cover 2, and the other end of the first elastic member 43 abuts against the moving plate 41. One end of the second elastic member 44 abuts against the inner side wall of the upper cover 2, and the other end of the second elastic member 44 abuts against the other end of the rotating plate 42. When the upper cover 2 is mounted at the upper end opening of the milk tank 1, the first clamping portion 412 and the second clamping portion 421 extend into two oppositely arranged fixed clamping positions 11 opened in the side wall of the milk tank 1, respectively.

[0039] In a specific application, when the upper cover 2 is installed at the upper end opening of the milk tank 1, the first clamping part 412 and the second clamping part 421 respectively extend into the two fixed clamping positions 11, so that the upper cover 2 is connected with the milk tank 1 as a whole. When it is necessary to supplement milk into the milk tank 1 or to clean it, the moving pressing part 411 is pressed, so that the moving plate 41 moves towards the rotating plate 42. During the movement of the moving plate 41, the first clamping part 412 is moved from the corresponding fixed clamping position 11 into the upper cover 2, and meanwhile, the moving plate 41 pushes the other end of the rotating plate 42 to make the rotating plate 42 rotate, so that the second clamping part at one end of the rotating plate 42 is moved from the corresponding fixed clamping position 11 into the upper cover 2. At this time, the upper cover 2 can be removed from the upper end opening of the milk tank 1. Since the first elastic member 43 and the second elastic member 44 are compressed when the moving plate 41 and the rotating plate 42 rotate, after the upper cover 2 is removed from the upper end opening of the milk tank 1, the moving plate 41 and the rotating plate 42 will restore to the original state under the elastic force of the first elastic member 43 and the second elastic member 44, that is, the moving pressing part 411, the first clamping part 412 and the second clamping part 421 are exposed on the upper cover 2. When it is necessary to install the upper cover 2 at the upper end opening of the milk tank 1 again, the upper cover 2 can be directly aligned with the upper end opening of the milk tank 1 and relatively moved, so that the upper cover 2 is installed at the upper end opening of the milk tank 1 again. Alternatively, after the moving pressing part 411 is pressed, the upper cover 2 can be aligned with the upper end opening of the milk tank 1 and relatively moved, and then the pressing of the moving pressing part 411 is stopped when the upper cover 2 and the upper end opening of the milk tank 1 are relatively moved to the position, so that the upper cover 2 is installed at the upper end opening of the milk tank 1 again. Specifically, the first elastic member 43 and the second elastic member 44 can be springs.

[0040] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 7 , in some preferred embodiments, the milk froth generating device further comprises a connecting assembly 5 arranged on the upper cover 2 or the milk tank 1, and the connecting assembly 5 is used to connect the milk froth generating device to the coffee machine.

[0041] Specifically, the connecting assembly 5 comprises a driving member 51, an insertion member 52 and a reset member 53. One end of the driving member 51 is located in the upper cover 2, and the other end of the driving member 51 is exposed on the upper cover 2. One end of the insertion member 52 is located in the upper cover 2 and connected with the driving member 51, and the other end of the insertion member 52 is exposed on the upper cover 2 and has a limiting part 521. The reset member 53 is arranged in the upper cover 2, one end of the reset member 53 abuts against the insertion member 52, and the other end of the reset member 53 abuts against a fixed plate 54 fixedly arranged in the upper cover 2.

[0042] In specific application, the coffee machine has a socket matching the shape of the insertion piece 52, when the milk froth generating device is installed on the coffee machine, the other end of the insertion piece 52 passes through the socket, so that the limiting part 521 is clamped at the socket of the coffee machine. When it is needed to dismount the milk froth generating device from the coffee machine, the driving piece 51 is pressed, so that the limiting part 521 corresponds to the socket, then the milk froth generating device is pulled away from the coffee machine, so that the milk froth generating device is dismounted from the coffee machine; when it is needed to install the milk froth generating device on the coffee machine again, the insertion piece 52 is inserted into the socket, during the insertion process, the reset piece 53 is compressed, after the insertion piece 52 is inserted into position, the elastic force of the compressed reset piece 53 makes the limiting part 521 clamped at the socket of the coffee machine, so that the installation of the milk froth generating device is realized. Specifically, the reset piece 53 can be a spring.

[0043] In the second aspect, as shown in the drawings, the utility model provides a kind of coffee machine, including main body 100, further including the milk froth generating device of the first aspect described above, and the milk froth generating device is detachably installed on main body 100. Figure 8

[0044] In specific application, the coffee machine has a socket matching the shape of the insertion piece 52, when the milk froth generating device is installed on the coffee machine, the other end of the insertion piece 52 passes through the socket, so that the limiting part 521 is clamped at the socket of the coffee machine. When it is needed to dismount the milk froth generating device from the coffee machine, the driving piece 51 is pressed, so that the limiting part 521 corresponds to the socket, then the milk froth generating device is pulled away from the coffee machine, so that the milk froth generating device is dismounted from the coffee machine; when it is needed to install the milk froth generating device on the coffee machine again, the insertion piece 52 is inserted into the socket, during the insertion process, the reset piece 53 is compressed, after the insertion piece 52 is inserted into position, the elastic force of the compressed reset piece 53 makes the limiting part 521 clamped at the socket of the coffee machine, so that the installation of the milk froth generating device is realized. Specifically, the reset piece 53 can be a spring.

[0045] In summary, in one or more embodiments of the utility model, the milk froth generating device and the coffee machine of the utility model pass through the connecting pipe with bending section between the frothing device and the bubble outlet pipe, so that the large milk froth prepared by the frothing device can be cut into small milk froth when passing through the bending section of the connecting pipe, to improve the frothing effect.

[0046] The above merely describes the embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the scope of claims of the utility model.​

Claims

1. A milk frothing device, characterized in that The utility model relates to a milk foaming device, which comprises a milk tank (1), an upper cover (2) and a foaming assembly (3), wherein the upper cover (2) is detachably arranged at the upper end opening of the milk tank (1); the foaming assembly (3) comprises a foaming device (31), a steam inlet pipe (32), a milk inlet pipe (33), a connecting pipe (34) and a foam outlet pipe (35); the foaming device (31) is arranged in the upper cover (2), and the foaming device (31) has a steam inlet (311), an air inlet (312), a milk inlet (313) and a foam outlet (314); one end of the steam inlet pipe (32) extends into the upper cover (2) and is connected with the steam inlet (311), and the other end of the steam inlet pipe (32) is exposed outside the upper cover (2); one end of the milk inlet pipe (33) is connected with the milk inlet (313), and the other end of the milk inlet pipe (33) extends into the interior of the milk tank (1); the connecting pipe (34) is arranged in the upper cover (2), one end of the connecting pipe (34) is connected with the foam outlet (314), and the connecting pipe (34) has a bending section (341); one end of the foam outlet pipe (35) extends into the upper cover (2) and is connected with the other end of the connecting pipe (34), and the other end of the foam outlet pipe (35) is exposed outside the upper cover (2); the air inlet (312) is in communication with the outside. An adapter (36) is arranged in the upper cover (2), the inlet of the adapter (36) is connected with the other end of the connecting pipe (34), one end of the foam outlet pipe (35) has a spherical connector (37), and the spherical connector (37) is connected with the outlet of the adapter (36).

2. The milk frothing device according to claim 1, characterized in that The angle between the inlet of the adapter (36) and the outlet of the adapter (36) is an angle α, and 0° < α < 180°.

3. The milk frothing device according to claim 2, characterized in that A pressing plate (38) is arranged at the outlet of the adapter (36), and the pressing plate (38) is sleeved on the spherical connector (37).

4. The milk frothing device according to claim 2, characterized in that A sealing ring (39) is sleeved on the spherical connector (37) and the pressing plate (38), the sealing ring (39) on the spherical connector (37) abuts against the pressing plate (38), and the sealing ring (39) on the pressing plate (38) abuts against the adapter (36).

5. The milk frothing device according to claim 4, characterized in that The foaming assembly (3) further comprises an air inlet adjusting member (310), one end of the air inlet adjusting member (310) extends through the foaming device (31) and extends into the air inlet (312), and the other end of the air inlet adjusting member (310) is exposed outside the upper cover (2).

6. The milk frothing device according to claim 1, characterized in that ​ 7. The milk frothing device according to claim 1, characterized in that The upper cover (2) is provided with a mounting assembly (4), the upper cover (2) is detachably arranged at the upper end opening of the milk tank (1) through the mounting assembly (4); the mounting assembly (4) comprises a moving plate (41), a rotating plate (42), a first elastic member (43) and a second elastic member (44); the moving plate (41) is slidingly arranged in the upper cover (2), one end of the moving plate (41) is provided with a moving pressing portion (411) and a first buckle portion (412) capable of being exposed to the upper cover (2); the rotating plate (42) is rotatably arranged in the upper cover (2) through a rotating shaft, one end of the rotating plate (42) is provided with a second buckle portion (421) capable of being exposed to the upper cover (2), the other end of the rotating plate (42) abuts against the other end of the moving plate (41); one end of the first elastic member (43) abuts against the inner side wall of the upper cover (2), the other end of the first elastic member (43) abuts against the moving plate (41); one end of the second elastic member (44) abuts against the inner side wall of the upper cover (2), the other end of the second elastic member (44) abuts against the other end of the rotating plate (42); when the upper cover (2) is mounted at the upper end opening of the milk tank (1), the first buckle portion (412) and the second buckle portion (421) respectively extend into two oppositely arranged fixed clamping positions (11) opened in the side wall of the milk tank (1).

8. The milk frothing device according to claim 1, characterized in that Further comprising a connecting assembly (5), the connecting assembly (5) is arranged on the upper cover (2) or the milk tank (1), and the connecting assembly (5) is used for connecting the milk bubble generating device on the coffee machine.

9. The milk frothing device according to claim 8, characterized in that The connecting assembly (5) comprises a driving member (51), an insertion member (52) and a reset member (53); one end of the driving member (51) is located in the upper cover (2), and the other end of the driving member (51) is exposed to the upper cover (2); one end of the insertion member (52) is located in the upper cover (2) and connected with the driving member (51), the other end of the insertion member (52) is exposed to the upper cover (2), and the other end of the insertion member (52) is provided with a limiting portion (521); the reset member (53) is arranged in the upper cover (2), one end of the reset member (53) abuts against the insertion member (52), and the other end of the reset member (53) abuts against a fixed plate (54) fixedly arranged in the upper cover (2).

10. A coffee maker comprising a main body (100), characterized in that, Further comprising the milk bubble generating device according to any one of claims 1-9, the milk bubble generating device is detachably mounted on the main body (100).

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