Milk foaming device

Abstract

The utility model provides a milk foaming device which comprises a foam maker main body, the foam maker main body is provided with a mixing cavity, a milk outlet of a milk supply pipeline and an air outlet of an air supply pipeline are both communicated with the mixing cavity so as to form milk foam in the mixing cavity, and the mixing cavity is provided with a fluid outlet; the foam breaking structure is connected to the downstream of the fluid outlet, the foam breaking structure is provided with a lateral foam breaking part, a milk foam flowing channel is defined in the lateral foam breaking part, and the lateral foam breaking part comprises at least two through holes distributed in the extending direction of the milk foam flowing channel. The milk foam making machine has the beneficial effects that fine milk foam can be obtained by arranging the foam breaking structure, and the quality of the milk foam is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to beverage preparation technical field especially, relate to a milk frothing device. BACKGROUND

[0002] Coffee machine and other beverage machine generally are provided with milk frothing device, and milk frothing device prepares milk froth through mixing and frothing milk and air. And milk froth is an important component in coffee making, and its quality directly influences the taste and user experience of final beverage.

[0003] However, the existing milk frothing device has many deficiencies in practical application, resulting in the milk froth generated often has bubbles of different sizes, especially the appearance frequency of large bubbles is higher. This not only affects the delicacy and taste of milk froth, but also makes the quality of milk froth difficult to keep consistent, reduces the satisfaction of users.

[0004] Therefore, a new type of milk frothing device capable of effectively improving the quality of milk froth is needed to meet the market demand for high-quality milk froth. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a milk frothing device, which effectively breaks large bubbles by setting a bubble breaking structure, prepares relatively delicate milk froth, and improves the stability and quality of milk froth.

[0006] To achieve one of the above utility model purposes, the utility model provides a milk frothing device, which comprises:

[0007] A frother main body is provided with a mixing chamber, and the milk outlet of a milk pipeline and the air outlet of an air supply pipeline are communicated with the mixing chamber to form milk froth in the mixing chamber. The mixing chamber has a fluid outlet.

[0008] A bubble breaking structure is connected downstream of the fluid outlet. The bubble breaking structure has a lateral bubble breaking part, which defines a milk froth flow channel. The lateral bubble breaking part includes at least two through holes arranged along the extension direction of the milk froth flow channel.

[0009] As a further improvement of one embodiment of the utility model, the bubble breaking structure further includes a radial bubble breaking part, which is arranged at one end of the milk froth flow channel or in the milk froth flow channel. The radial bubble breaking part includes at least two through holes.

[0010] As a further improvement of one embodiment of the utility model, along the extension direction of the milk froth flow channel, the length of the lateral bubble breaking part is greater than the preset length, and the preset length is 7mm.

[0011] As a further improvement of an embodiment of the utility model, the aperture of the through hole is 0.4mm-1mm.

[0012] As a further improvement of an embodiment of the utility model, the bubble breaking structure is detachably connected downstream of the fluid outlet.

[0013] As a further improvement of an embodiment of the utility model, further include the output pipeline connected downstream of the fluid outlet, the first end of the output pipeline away from the fluid outlet has the output port, the bubble breaking structure is detachably installed downstream of the output port.

[0014] As a further improvement of an embodiment of the utility model, the bubble breaking structure is rotatably connected to the first end of the output pipeline;The bubble breaking structure is provided with a connecting protrusion, and the output pipeline is provided with a first limiting block and a second limiting block, and in the direction of the rotation axis of the bubble breaking structure, the first limiting block and the second limiting block are arranged at intervals, and the connecting protrusion can be rotated circumferentially between the first limiting block and the second limiting block to limit the movement of the bubble breaking structure relative to the output pipeline in the direction of the rotation axis.

[0015] As a further improvement of an embodiment of the utility model, further include the output pipeline connected downstream of the fluid outlet, the first end of the output pipeline away from the fluid outlet, and the second end close to the fluid outlet, the first end has the output port, the bubble breaking structure is connected to the upstream of the output port;

[0016] The bubble breaking structure is detachably connected between the second end and the fluid outlet, or the bubble breaking structure is detachably connected between the second end and the first end.

[0017] As a further improvement of an embodiment of the utility model, the milk foaming device at least meets one of the following characteristics:

[0018] The milk foam flow channel is cylindrical or frustoconical tapering from upstream to downstream;

[0019] The bubble breaking structure has a side wall, and the side wall is provided with the through hole to form the lateral bubble breaking part;

[0020] The bubble breaking structure is provided with a pressure release opening, and the opening area of the pressure release opening is greater than the opening area of the through hole;

[0021] The foamer body is provided with the milk supply pipeline, the air supply pipeline and the steam supply pipeline, and the steam outlet of the steam supply pipeline communicates with the mixing cavity.

[0022] As a further improvement of the embodiment of the utility model, the bubble breaking structure comprises an inner shell and an outer shell rotatably arranged outside the inner shell, the inner shell is provided with at least two first through holes, the outer shell is provided with a second through hole corresponding to the first through hole, the first through hole and the corresponding second through hole jointly define the through hole, and the outer shell is rotatable relative to the inner shell to make the corresponding first through hole and second through hole completely aligned or partially aligned to adjust the size of the through hole.

[0023] Compared with the prior art, the utility model has the beneficial effects that the bubble breaking structure has a lateral bubble breaking part, and the lateral bubble breaking part has at least two through holes in the extension direction of the milk foam flow channel, milk foam is discharged from the through holes, so that large bubbles in the milk foam can be broken, the number of output large bubbles is reduced, and the output milk foam is more delicate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a state perspective view of the milk frothing device of the first embodiment of the utility model.

[0025] Figure 2 is Figure 1 is a perspective view of the frother main body of the milk frothing device shown in

[0026] Figure 3 is Figure 2 is a sectional view of the frother main body shown in

[0027] Figure 4 is Figure 1 is a state perspective view of the bubble breaking structure shown in

[0028] Figure 5 is Figure 1 is a partial perspective view of the milk frothing device shown in

[0029] Figure 6 is a perspective view of the milk frothing device of the second embodiment of the utility model.

[0030] Figure 7 is a perspective view of the milk frothing device of the third embodiment of the utility model.

[0031] Figure 8 is a perspective view of the bubble breaking structure. Figure 7 is a perspective view of the bubble breaking structure.

[0032] Figure 9 is a perspective view of the milk frothing device of the fourth embodiment of the present application.

[0033] Figure 10 is a perspective view of the milk frothing device. Figure 9 is a perspective exploded view of the milk frothing device.

[0034] Figure 11 is a partial cross-sectional view of the milk frothing device. Figure 9 is a partial cross-sectional view of the milk frothing device.

[0035] Figure 12 is a perspective view of the milk frothing device of the fifth embodiment of the present application.

[0036] Figure 13 is a perspective exploded view of the bubble breaking structure. Figure 12 is a perspective exploded view of the bubble breaking structure.

[0037] Figure 14 is a perspective view of the bubble breaking structure. Figure 12 is a perspective view of the bubble breaking structure. DETAILED DESCRIPTION

[0038] The present application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those skilled in the art based on these embodiments are included in the scope of protection of the present application.

[0039] The present application provides a milk frothing device. The milk frothing device can be used in a beverage machine such as a coffee machine. The milk frothing device can mix milk and air to make milk foam.

[0040] Referring to Figures 1 to 4 is a milk frothing device provided by the first embodiment of the present application.

[0041] In this embodiment, the milk frothing device includes a frother body 1. The frother body 1 is provided with a mixing chamber 13, and the milk outlet of the milk supply line 11 and the air outlet of the air supply line 12 are both in communication with the mixing chamber 13, so as to form milk foam in the mixing chamber 13.

[0042] In this embodiment, the milk supply line 11 can be connected to a milk tank, and the milk in the milk tank can enter the mixing chamber 13 through the milk outlet. The air supply line 12 can be connected to external air, and the external air can enter the mixing chamber 13 through the air outlet.

[0043] Of course, the milk frothing device of the present embodiment is also applicable to a beverage machine without a milk tank. For example, a milk supply pipe 11 is connected to a milk pipe, and an external milk supply source such as a milk box can supply milk to the mixing chamber 13 through the milk pipe and the milk supply pipe 11 in sequence.

[0044] The milk frothing device of the present embodiment can prepare milk froth by the Venturi principle. The frother body 1 can further include a milk supply pipe 11, an air supply pipe 12, and a steam supply pipe 14, and the steam supply pipe 14 also communicates with the mixing chamber 13. The frother body 1 is further provided with a negative pressure chamber 16 arranged upstream of the mixing chamber. Steam is delivered into the mixing chamber 13 through the steam supply pipe 14, and a negative pressure can be formed in the negative pressure chamber 16, so that milk in the milk tank is sucked into the mixing chamber 13 through the milk supply pipe 11, and at the same time, external air is sucked into the mixing chamber 13 through the air supply pipe 12. In the mixing chamber 13, the milk and the air interact with each other, so that milk froth can be formed.

[0045] Of course, in other embodiments of the present application, milk in the milk tank or other external milk supply source and external air can be supplied into the mixing chamber 13 by other means other than the Venturi principle to form milk froth. It can be understood that milk and external air can be supplied into the mixing chamber 13 respectively as shown, or milk and external air can be mixed first to form a milk-air mixture, and then the milk-air mixture is supplied into the mixing chamber 13. Figure 3

[0046] It can be understood that the milk frothing device of the present embodiment is applicable to a beverage machine with a built-in Venturi structure and a milk tank, and is also applicable to a beverage machine with a built-in Venturi structure but without a milk tank, and is also applicable to a beverage machine without a built-in Venturi structure but with a milk tank, and is also applicable to a beverage machine without a built-in Venturi structure and without a milk tank.

[0047] The mixing chamber 13 has a fluid outlet 131, and the milk froth formed in the mixing chamber 13 can flow out of the fluid outlet 131.

[0048] The milk frothing device of the present application further includes a defoaming structure 2. The defoaming structure 2 is connected downstream of the fluid outlet 131. The milk froth formed in the mixing chamber 13 flows out through the fluid outlet 131, passes through the defoaming structure 2, and then is discharged into a user's cup.

[0049] In the present embodiment, the defoaming structure 2 has a lateral defoaming portion 21, the lateral defoaming portion 21 defines a milk froth flow channel 22, and the lateral defoaming portion 21 includes at least two through holes 23 arranged along the extension direction of the milk froth flow channel 22.

[0050] ​In the embodiment, the extending direction of the milk foam flow channel 22 can be the flow direction of the milk foam in the bubble breaking structure 2. After the milk foam flows out of the mixing cavity 13, the milk foam can enter the milk foam flow channel 22 of the bubble breaking structure 2 and flow out through the through holes 23 of the lateral bubble breaking part 21. In the process of the milk foam flowing along the milk foam flow channel 22, the finer milk foam can smoothly flow out through the through holes 23 of the lateral bubble breaking part 21, and the larger bubbles are broken under the action of the through holes 23, thereby avoiding the existence of large bubbles.

[0051] In addition, the lateral bubble breaking part 21 includes at least two through holes 23 arranged along the extending direction of the milk foam flow channel 22, the effective bubble breaking area, that is, the effective flow area, on the milk foam flow path is increased, the final output milk foam has smaller and uniform bubble diameters, the demand for high-quality milk foam is met, and the smooth output of the milk foam is ensured, and a series of problems such as low output efficiency caused by flow blockage of the milk foam are avoided. At the same time, the lateral bubble breaking part 21 can also increase the resistance of the milk foam flow and reduce the milk foam flow speed, avoid splashing of the milk foam when the milk foam is discharged, and also avoid large bubbles in the cup when the milk foam is discharged.

[0052] In actual application, the number of the through holes 23 has a key influence on the performance of the bubble breaking structure 2. If the bubble breaking structure 2 is arranged in a round sheet structure, the flow area of the milk foam is not enough, which can easily cause flow blockage of the milk foam, and then cause a series of problems such as difficulty in discharging milk, milk foam splashing, milk foam backflow to the milk tank, and the like. When the milk foaming device is used to make milk foam by using the Venturi principle, the pressure in the mixing cavity can be too high, the milk foam cannot be normally made, or the pressure at the connection of the milk foaming device and the beverage machine is too high, and then the milk foaming device can be separated, and the like. In the embodiment, the lateral bubble breaking part 21 is arranged, the larger bubbles are effectively broken in the flow process, and are converted into finer milk foam, thereby improving the stability and quality of the output milk foam.

[0053] Further, in the embodiment, the bubble breaking structure 2 includes a radial bubble breaking part 24.

[0054] The radial bubble breaking part 24 is arranged at one end of the milk foam flow channel 22 or in the milk foam flow channel 22, and the radial bubble breaking part 24 includes at least two through holes 23.

[0055] In the specific embodiment provided in the utility model, as shown in Figure 1 , Figure 2 and Figure 4As shown, the radial bubble breaking part 24 is arranged at the downstream end of the milk foam flow channel 22. After the milk foam enters the milk foam flow channel 22 of the bubble breaking structure 2, the milk foam flows along the lateral bubble breaking part 21 during the milk foam flow process, and can flow out through the through hole 23 of the lateral bubble breaking part 21. Part of the milk foam can directly flow to the downstream end of the milk foam flow channel 22 and be discharged through the through hole 23 of the radial bubble breaking part 24.

[0056] The through hole 23 of the radial bubble breaking part 24 can further break large bubbles in the milk foam, further enhancing the bubble breaking effect, and ensuring that larger bubbles can be effectively broken in the radial bubble breaking part 24 when the milk foam passes through the bubble breaking structure 2, and converted into finer milk foam. The through hole 23 of the radial bubble breaking part 24 and the through hole 23 of the lateral bubble breaking part 21 can both break large bubbles in the milk foam. Through the synergistic effect of the lateral bubble breaking part 21 and the radial bubble breaking part 24, finer milk foam can smoothly pass through the plurality of through holes 23, while larger bubbles are broken into smaller bubbles by the bubble breaking structure 2, thereby ensuring that the milk foam discharged from the bubble breaking structure 2 is fine milk foam, and significantly improving the stability and quality of the output milk foam.

[0057] Further, in an embodiment of the present application, the length L of the lateral bubble breaking part 21 is greater than a preset length along the extension direction of the milk foam flow channel 22, and the preset length is 7mm.

[0058] In this embodiment, the length L of the lateral bubble breaking part 21 can be measured along the axial direction of the milk foam flow channel 22, that is, the length of the milk foam flow channel 22. Please refer to Figure 1 .

[0059] This design ensures that the milk foam has sufficient contact area with the lateral bubble breaking part 21 when flowing in the milk foam flow channel 22, thereby fully interacting with the through hole 23 of the bubble breaking structure 2, and effectively preventing large bubbles from being output without being broken by the through hole 23 due to the length L being too small. It can be understood that if the length L is too small, there may be large bubbles that are output without being broken by the through hole 23.

[0060] The milk foam flowing through the bubble breaking structure 2 can be subjected to multiple breaking and refining processes on a relatively long path. Larger bubbles are subjected to continuous resistance and breaking action in the relatively long lateral bubble breaking part 21, and can be effectively broken into smaller and uniform bubbles, further reducing the proportion of large bubbles, and ensuring that the finally output milk foam has a smaller and uniform bubble diameter, meeting the demand for high-quality milk foam.

[0061] In addition, the length L design of the lateral bubble breaking part 21 also optimizes the flow speed of the milk foam. By increasing the length of the milk foam flow path, the output speed of the milk foam is further reduced, preventing the formation of new large bubbles in the user's cup, and ensuring the stability and quality of the milk foam output.

[0062] Through the structural design, the milk frothing device can effectively solve the problem of unstable milk foam quality in the prior art, realize high-quality, delicate and uniform milk foam output, and improve the use experience of users.

[0063] Further, in an embodiment of the present application, the hole diameter of the through hole 23 is 0.4mm-1mm.

[0064] In the present embodiment, the hole diameter of the through hole 23 of the lateral bubble breaking part 21 and the radial bubble breaking part 24 can be 0.4mm-1mm. The setting of this hole diameter range aims to optimize the bubble breaking effect, so that larger bubbles can be effectively broken, and delicate milk foam can smoothly pass through.

[0065] In actual application, the hole diameter selection of the through hole 23 has a key influence on the performance of the bubble breaking structure 2. If the hole diameter of the through hole 23 is too small (less than 0.4mm), it may cause milk foam flow to be blocked, affecting the output efficiency and smoothness of the milk foam. In the case of serious milk foam blocking, a series of problems may occur, such as difficulty in milk output, milk foam spatter, milk foam backflow to the milk tank, etc. When the milk frothing device uses the Venturi principle to make milk foam, it may also cause the pressure in the mixing chamber to be too high, which cannot normally make milk foam, or cause the pressure at the connection of the milk frothing device and the beverage machine to be too high, thereby causing the milk frothing device to fall off, etc.

[0066] If the hole diameter of the through hole 23 is too large (more than 1mm), it may not effectively break larger bubbles, resulting in that the output milk foam still contains many large bubbles, affecting the delicacy and stability of the milk foam. Therefore, selecting a hole diameter range of 0.4mm-1mm can achieve a good balance between bubble breaking effect and milk foam flow, ensuring that the milk frothing device can continuously output high-quality delicate milk foam in actual use.

[0067] Specifically, the through hole 23 with a hole diameter of 0.4mm-1mm can provide sufficient resistance to break large bubbles while not hindering the flow of delicate milk foam, thereby ensuring that the output milk foam has a small and uniform bubble diameter, improving the overall quality and stability of the milk foam.

[0068] Further, in combination with Figure 4 and Figure 5 In an embodiment of the present application, the bubble breaking structure 2 is detachably connected downstream of the fluid outlet 131, which facilitates the user to detach and clean the bubble breaking structure 2 when needed, is easy to maintain and can ensure the hygiene of the equipment.

[0069] In the present embodiment, the milk frothing device further comprises an output pipeline 15 connected downstream of the fluid outlet 131, a first end of the output pipeline 15 away from the fluid outlet 131 has an output port 155, and the bubble breaking structure 2 is detachably mounted downstream of the output port 155.

[0070] Specifically, the defoaming structure 2 is detachably installed at the first end of the output pipe 15. Milk foam in the mixing chamber 13 flows through the fluid outlet 131 into the downstream output pipe 15, then flows along the output pipe 15 and through the outlet 155 into the milk foam flow channel 22 of the defoaming structure 2, located downstream of the outlet 155. Finally, the milk foam flows out through the through-hole 23 of the defoaming structure 2. The defoaming structure 2 improves the fineness and stability of the output milk foam while slowing down the output flow rate.

[0071] In this embodiment, the output pipe 15 further extends the milk foam flow path, which can further reduce the flow speed of the milk foam.

[0072] The bubble-breaking structure 2 is directly connected downstream of the output pipe 15 and exposed to the outside, making it easier for users to clean the bubble-breaking structure 2.

[0073] Furthermore, in this embodiment, the bubble-breaking structure 2 is rotatably connected to the first end of the output pipe 15.

[0074] like Figure 4 and Figure 5 As shown, the bubble-breaking structure 2 is provided with a connecting protrusion 26, and the output pipeline 15 is provided with a first limiting block 151 and a second limiting block 152. The first limiting block 151 and the second limiting block 152 are spaced apart along the rotation axis of the bubble-breaking structure 2. The connecting protrusion 26 can rotate circumferentially between the first limiting block 151 and the second limiting block 152 to restrict the movement of the bubble-breaking structure 2 relative to the output pipeline 15 in the rotation axis direction, thereby installing the bubble-breaking structure 2 onto the output pipeline 15.

[0075] Specifically, both the first limiting block 151 and the second limiting block 152 can extend circumferentially. The first limiting block 151 is positioned further away from the output port 155 than the second limiting block 152. During installation, the connecting protrusion 26 of the bubble-breaking structure 2 is aligned with the position of the first limiting block 151, so that the connecting protrusion 26 abuts against the first limiting block 151. Then, the bubble-breaking structure 2 is rotated so that the connecting protrusion 26 rotates between the first limiting block 151 and the second limiting block 152, with both ends of the connecting protrusion 26 abutting against the first limiting block 151 and the second limiting block 152 respectively, thus completing the installation of the bubble-breaking structure 2. When it is necessary to remove the bubble-breaking structure 2, simply rotate the bubble-breaking structure 2 in the opposite direction.

[0076] In this embodiment, the output pipe 15 is also provided with a third limiting block 153. When the bubble-breaking structure 2 rotates at a certain angle relative to the output pipe 15, the connecting protrusion 26 abuts against the third limiting block 153 and cannot rotate further, thereby preventing the bubble-breaking structure 2 from rotating out of position.

[0077] In the embodiment, as shown in Figure 4 and Figure 5 The output pipeline 15 can be provided with two first limiting blocks 151 and two second limiting blocks 152 at intervals in the circumferential direction. The bubble breaking structure 2 is provided with two connecting protrusions 26 to increase the reliability of the connection between the bubble breaking structure 2 and the output pipeline 15. The interval between the two second limiting blocks 152 forms a space 154. When installing the bubble breaking structure 2, the connecting protrusions 26 can be aligned with the space 154 and sleeved on the output pipeline 15, and then the bubble breaking structure 2 can be rotated to complete the installation.

[0078] Through the above structural design, the milk frothing device can not only effectively break larger bubbles and improve the fineness and stability of the milk foam, but also facilitate disassembly and cleaning, thereby comprehensively improving the practicality of the device and the user experience.

[0079] In the embodiment, the milk foam flow channel 22 is in the shape of a circular truncated cone tapering from the upstream to the downstream.

[0080] The bubble breaking structure 2 has a side wall, and the side wall is provided with a through hole 23 to form a lateral bubble breaking part 21.

[0081] Specifically, the bubble breaking structure 2 is in the shape of a circular truncated cone tapering from the upstream to the downstream, and the side wall thereof surrounds to form a milk foam flow channel 22 for the flow of milk foam.

[0082] The side wall is directly provided with the through hole 23 to form the lateral bubble breaking part 21.

[0083] As shown in Figure 1 , Figure 2 and Figure 4 The downstream end of the milk foam flow channel 22 is provided with a radial bubble breaking part 24.

[0084] The cross-sectional area of the milk foam flow channel 22 gradually decreases from the upstream to the downstream. By gradually reducing the cross-sectional area, the resistance to the flow of milk foam is increased, further promoting the breaking of large bubbles, while reducing the flow speed of the milk foam, so that the milk foam is more delicate and stable.

[0085] In an embodiment, the bubble breaking structure 2 is further provided with a pressure relief opening 25, and the opening area of the pressure relief opening 25 is greater than the opening area of the through hole 23.

[0086] In the embodiment, the radial bubble breaking part 24 is arranged at the downstream end of the milk foam flow channel 22, and the pressure relief opening 25 is arranged in the radial bubble breaking part 24.

[0087] By arranging the pressure relief opening 25, back pressure can be avoided at the output port 155. For example, when the milk frothing device uses the Venturi principle to prepare milk foam, the steam supply pipeline 14 can supply steam without affecting the supply of milk and gas, and the milk foam can also be ensured to flow out of the mixing chamber 13 smoothly.

[0088] Referring to Figure 6 , the milk frothing device provided in the second embodiment of the utility model. For the convenience of description, the same or similar structures adopt the same number, and subsequent details will not be repeated.

[0089] The milk frothing device of the present embodiment is different from the milk frothing device of the first embodiment only in the froth breaking structure 2.

[0090] In the present embodiment, the milk froth flow channel 22 is in the shape of a circular truncated cone tapering from upstream to downstream.

[0091] In the present embodiment, the froth breaking structure 2 can not be provided with a radial froth breaking part 24, and both the upstream end and the downstream end of the milk froth flow channel 22 can be open ends, forming pressure release openings 25.

[0092] And since the milk froth flow channel 22 is in the shape of a tapered circular truncated cone, the milk froth flow speed is slow, and the length L of the milk froth flow channel 22 is greater than the preset length, the milk froth flow path is long, so that the milk froth can basically flow out from the through holes 23 of the lateral froth breaking part 21 during the flow process, and basically not from the open end downstream.

[0093] The froth breaking structure 2 of the present embodiment, as shown in Figure 6 , since no radial froth breaking part 24 or other blocking structure is provided in the milk froth flow channel 22, no back pressure is formed at the output port 155, when the milk frothing device uses the Venturi principle to prepare milk froth, it will not affect the operation of the steam supply pipeline 14, and in turn will not affect the milk supply and air supply, and can also ensure that the milk froth flows out of the mixing chamber 13 smoothly.

[0094] Referring to Figure 7 , Figure 8 , the milk frothing device of the third embodiment of the utility model. For the convenience of description, the same or similar structures adopt the same number, and subsequent details will not be repeated.

[0095] The milk frothing device of the present embodiment is different from the milk frothing device of the first embodiment in the froth breaking structure 2.

[0096] In the present embodiment, the milk froth flow channel 22 is in the shape of a circular truncated cone tapering from upstream to downstream.

[0097] In the present embodiment, by setting the length L of the milk froth flow channel to be greater than 8mm, the milk froth can basically flow out from the lateral froth breaking part 21 during the flow process, and the fineness of the milk froth is improved.

[0098] The bubble breaking structure 2 of the present embodiment does not form back pressure at the output port 155, and can ensure that the milk foam flows out of the mixing chamber 13 smoothly, because no radial bubble breaking part 24 or other blocking structure is arranged in the milk foam flow channel 22.

[0099] When the milk foaming device adopts the Venturi principle to prepare milk foam, the operation of the steam supply pipeline 14 will not be affected, and thus the milk supply and air supply will not be affected.

[0100] Of course, in other embodiments of the present application, the bubble breaking structure 2 can also not be provided with the pressure relief opening 25, that is, the radial bubble breaking part 24 and the lateral bubble breaking part 21 of the bubble breaking structure 2 are both provided with through holes 23 with small openings, and neither of them is provided with a pressure relief opening 25 with a large opening. However, as long as the total area of the through holes 23 opened by the bubble breaking structure 2 is sufficient, back pressure can also be avoided. It can be understood that the total area of the through holes 23 is the sum of the cross-sectional areas of all the through holes 23.

[0101] The bubble breaking structure 2 of the present embodiment is provided with a pressure relief opening 25, so that the total area of the through holes 23 opened by the bubble breaking structure 2 can be reduced.

[0102] Referring to Figure 9 , Figure 10 , the milk foaming device of the fourth embodiment of the present application. For ease of illustration, the same or similar structures are numbered the same, and subsequent details will not be repeated.

[0103] The milk foaming device of the present embodiment differs from the milk foaming devices of the first to third embodiments in the installation position of the bubble breaking structure 2.

[0104] In the present embodiment, the output pipeline 15 has a first end away from the fluid outlet 131, and a second end close to the fluid outlet 131, the first end has an output port 155, and the bubble breaking structure 2 is connected upstream of the output port 155. The bubble breaking structure 2 is arranged between the fluid outlet 131 of the mixing chamber 13 and the output port 155 of the output pipeline 15. After the milk foam flows out of the mixing chamber 13, it passes through the bubble breaking structure 2 and then is discharged from the output port 155 of the output pipeline 15.

[0105] In the present embodiment, the bubble breaking structure 2 can be detachably connected between the second end of the output pipeline 15 and the fluid outlet 131, or can also be detachably connected between the second end and the first end of the output pipeline 15.

[0106] Specifically, referring to Figure 11 , the bubble breaking structure 2 can be arranged inside the output pipeline 15, and a gap can be provided between the lateral bubble breaking part 21 and the inner wall of the output pipeline 15 to ensure the smoothness of the milk foam flowing out of the lateral bubble breaking part 21.

[0107] The bubble breaking structure 2 is provided with a lateral bubble breaking part 21 to increase the effective flow area and avoid using a regular circular plate structure, thereby preventing milk foam flow blockage.

[0108] Meanwhile, sufficient bubble breaking effect can be provided while ensuring smooth milk foam flow, thereby ensuring that the output milk foam is delicate and consistent and improving the overall quality and stability of the milk foam.

[0109] The bubble breaking structure 2 is arranged at the upstream of the output pipeline 15, so that the milk foam can be fully treated when passing through the output pipeline 15, thereby effectively solving the problem of unstable milk foam quality in the prior art, achieving high-quality, delicate and uniform milk foam output, and meeting the demand of users for high-standard milk foam.

[0110] Referring to Figures 12 to 14 The milk foaming device provided in the fifth embodiment of the utility model. For the convenience of description, the same or similar structures are marked with the same numbers, and subsequent details will not be repeated.

[0111] Compared with the milk foaming devices of the first to third embodiments, the main difference of the present embodiment is the bubble breaking structure 2.

[0112] In the present embodiment, the bubble breaking structure 2 comprises an inner shell 27 and an outer shell 28 rotatably arranged outside the inner shell 27. The inner shell 27 is provided with at least two first through holes 231, and the outer shell 28 is provided with second through holes 232 corresponding to the first through holes 231. The first through holes 231 and the corresponding second through holes 232 jointly define through holes 23. The outer shell 28 is rotatable relative to the inner shell 27, so that the corresponding first through holes 231 and second through holes 232 can be completely aligned or partially aligned to adjust the size of the through holes 23, so that the user can adjust the delicacy of the milk foam according to the demand.

[0113] When the first through holes 231 and the second through holes 232 are completely aligned, the size of the through holes 23 is the largest. The bubbles in the milk foam are also relatively large. Referring to Figure 14 When the outer shell 28 is rotated relative to the inner shell 27 to partially align the first through holes 231 and the second through holes 232, the through holes 23 are reduced, and the generated milk foam is more delicate.

[0114] Through this design, the user can adjust the opening degree of the through holes 23 in the bubble breaking structure 2 according to the actual need by rotating the outer shell 28, so as to realize stepless adjustment of the bubble breaking effect, thereby obtaining milk foam with different delicacy. The user can freely adjust the delicacy and stability of the milk foam according to different beverage needs.

[0115] In summary, the milk frothing device realizes efficient, stable and delicate milk foam output through the bubble breaking structure 2, solves the problem of unstable milk foam quality in the prior art, and has remarkable practical value and market application prospect.

[0116] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0117] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. A milk frothing device, characterized in that, The milk frothing device comprises: a frothing body provided with a mixing chamber, a milk outlet of a milk supply line and an air outlet of an air supply line are communicated with the mixing chamber to form milk foam in the mixing chamber, the mixing chamber has a fluid outlet; a bubble breaking structure connected downstream of the fluid outlet, the bubble breaking structure has a lateral bubble breaking part defining a milk foam flow channel, the lateral bubble breaking part comprises at least two through holes arranged along the extension direction of the milk foam flow channel.

2. A milk frothing device according to claim 1, characterised in that The bubble breaking structure further comprises a radial bubble breaking part arranged at one end of the milk foam flow channel or in the milk foam flow channel, the radial bubble breaking part comprises at least two through holes.

3. The milk frothing device according to claim 1, characterized in that The length (L) of the lateral bubble breaking part along the extension direction of the milk foam flow channel is greater than a preset length, and the preset length is 7mm.

4. A milk frothing device according to any one of claims 1 to 3, characterised in that, The diameter of the through hole is 0.4mm-1mm.

5. A milk frothing device according to any of claims 1-3, characterised in that The bubble breaking structure is detachably connected downstream of the fluid outlet.

6. A milk frothing device according to any one of claims 1 to 3, characterised in that, Further comprising an output line connected downstream of the fluid outlet, a first end of the output line away from the fluid outlet has an output port, and the bubble breaking structure is detachably mounted downstream of the output port.

7. A milk frothing device as claimed in claim 6, characterised in that The bubble breaking structure is rotationally connected to the first end of the output line; the bubble breaking structure is provided with a connecting protrusion, and the output line is provided with a first limiting block and a second limiting block, the first limiting block and the second limiting block are arranged in the direction of the rotation axis of the bubble breaking structure, and the connecting protrusion can be rotated circumferentially between the first limiting block and the second limiting block to limit the movement of the bubble breaking structure relative to the output line in the direction of the rotation axis.

8. A milk frothing device according to any of claims 1-3, characterized in that Further comprising an output line connected downstream of the fluid outlet, the output line has a first end away from the fluid outlet and a second end close to the fluid outlet, the first end has an output port, and the bubble breaking structure is connected upstream of the output port; The bubble breaking structure is detachably connected between the second end and the fluid outlet, or the bubble breaking structure is detachably connected between the second end and the first end.

9. A milk frothing device according to any of claims 1-3, characterized in that The milk frothing device at least meets one of the following characteristics: The milk foam flow channel is in a cylindrical shape or a circular truncated cone shape tapering from upstream to downstream; The bubble breaking structure has a side wall, the side wall is provided with the through hole to form the lateral bubble breaking part; The bubble breaking structure is provided with a pressure relief opening, and the opening area of the pressure relief opening is greater than the opening area of the through hole; The frothing body is provided with the milk supply line, the air supply line and a steam supply line, and a steam outlet of the steam supply line is communicated with the mixing chamber.

10. A milk frothing device according to any one of claims 1 to 3, characterised in that, The bubble breaking structure comprises an inner shell and an outer shell rotationally sleeved outside the inner shell, the inner shell is provided with at least two first through holes, the outer shell is provided with second through holes corresponding to the first through holes, the first through hole and the corresponding second through hole jointly define the through hole, and rotation of the outer shell relative to the inner shell can make the corresponding first through hole and second through hole completely aligned or partially aligned to adjust the size of the through hole.

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