Milk foam device and beverage dispenser

Abstract

The utility model provides a milk foam device and a beverage dispenser, the milk foam device comprises a feeding unit, the feeding unit is provided with a first mixing cavity, a first air inlet channel and a first liquid outlet groove, the first mixing cavity is communicated with the first air inlet channel, the first mixing cavity is used for introducing air, steam and milk, the air, the steam and the milk are mixed to form milk foam liquid, and the first liquid outlet groove is communicated with the first liquid outlet groove; the first liquid outlet groove is communicated with the first mixing cavity, and the first liquid outlet groove is used for allowing milk foam liquid to flow out of the feeding unit; the air inlet adjusting piece is rotatably connected to the first air inlet channel, an air inlet groove is formed in the circumferential wall of the air inlet adjusting piece, and the depth of the air inlet groove is gradually reduced in the direction that the first end of the air inlet groove extends to the second end of the air inlet groove; an air inlet hole is formed in the inner wall of the air inlet groove, the air inlet groove communicates with the first air inlet channel through the air inlet hole, and the air inlet hole is located in the second end of the air inlet groove; the air inlet adjusting piece is used for rotating to adjust the flow of air entering the air inlet groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, and in particular to a milk froth device and a beverage machine. BACKGROUND

[0002] In order to improve the richness of taste and flavor of coffee and milk tea and the like, milk froth liquid can be added to the beverage during preparation. The milk froth liquid can be formed by mixing high-temperature steam, milk liquid and air. Currently, a milk froth device can be provided in equipment such as a coffee machine for preparing beverages, so as to generate milk froth liquid while preparing the beverage, and add the milk froth liquid to the beverage.

[0003] Currently, the fineness of the milk froth liquid generated by the milk froth device is generally not adjustable, and the user cannot adjust the fineness of the milk froth liquid generated by the milk froth device according to different types of beverages to be prepared and different personal drinking needs, resulting in poor experience. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide a milk froth device and a beverage machine to solve the above-mentioned defects.

[0005] In a first aspect, an embodiment of the present application provides a milk froth device, comprising: a feeding unit, a first mixing cavity, a first air inlet channel and a first liquid outlet groove are formed in the feeding unit, the first mixing cavity is in communication with the first air inlet channel, the first mixing cavity is used for introducing air, steam and milk liquid, so that the air, steam and milk liquid are mixed to form milk froth liquid, the first liquid outlet groove is in communication with the first mixing cavity, and the first liquid outlet groove is used for flowing out the milk froth liquid from the feeding unit; an air inlet adjusting piece, the air inlet adjusting piece is rotatably connected to the first air inlet channel, an air inlet groove is formed in the peripheral wall of the air inlet adjusting piece, the depth of the air inlet groove gradually decreases in the direction from the first end to the second end of the air inlet groove; an air inlet hole is formed in the inner wall of the air inlet groove, the air inlet groove is communicated with the first air inlet channel through the air inlet hole, and the air inlet hole is located at the second end of the air inlet groove; the air inlet adjusting piece is used for rotating to adjust the flow of air entering the air inlet groove.

[0006] Optionally, the first air inlet channel penetrates one side of the feeding unit in a first direction, a first protrusion is arranged on the peripheral wall of the feeding unit, the first protrusion extends in a direction surrounding the first air inlet channel, and a spacing space is formed between the two ends of the first protrusion, the air inlet adjusting piece comprises: a first connecting part, the first connecting part is rotatably connected to the first air inlet channel; a connecting disc, the connecting disc is connected to one side of the first connecting part in the first direction, a second protrusion is arranged on the connecting disc, the second protrusion is located in the spacing space, and the second protrusion is used for abutting against the two ends of the first protrusion to limit the rotation angle of the air inlet adjusting piece.

[0007] Optionally, the milk froth device further comprises a knob member, the knob member is provided with a first connecting groove on one side in the first direction, the air inlet adjusting member is partially inserted into the first connecting groove, and the knob member is used to rotate the air inlet adjusting member.

[0008] Optionally, the first air inlet channel penetrates one side of the feeding unit in the first direction, and the air inlet adjusting member comprises a first connecting portion and a second connecting portion, the first connecting portion is rotatably connected to the first air inlet channel, and the second connecting portion is located on one side of the first connecting portion in the first direction and is partially inserted into the first connecting groove.

[0009] Optionally, the feeding unit is further provided with a first liquid inlet channel, the first liquid inlet channel is in communication with the first mixing cavity, and the milk froth device further comprises a liquid inlet connector, the liquid inlet connector is partially inserted into the first liquid inlet channel, the liquid inlet connector is in communication with the first liquid inlet channel, and the liquid inlet connector is used to introduce milk liquid.

[0010] Optionally, the first mixing cavity penetrates one side of the feeding unit in the vertical direction, and the milk froth device further comprises a machine shell, the feeding unit and the air inlet adjusting member are at least partially accommodated in the machine shell, the machine shell comprises a cover body, a base, a first connector and a second connector, the cover body and the base are arranged in the vertical direction, the first connector is connected to the inner wall of the cover body, the first connector is partially inserted into the first mixing cavity and is in communication with the first mixing cavity, and the second connector is connected to the outer side of the cover body and is connected to the first connector, and the second connector is used to introduce steam.

[0011] Optionally, the first liquid outlet groove penetrates one side of the feeding unit in the vertical direction, and the machine shell further comprises a connecting seat and a liquid outlet nozzle, the connecting seat is provided with a second connecting groove, the second connecting groove is used to accommodate one side of the feeding unit provided with the first liquid outlet groove, the second connecting groove is in communication with the first liquid outlet groove, the liquid outlet nozzle is provided with a second liquid outlet groove, the second liquid outlet groove penetrates the liquid outlet nozzle in the vertical direction, the second liquid outlet groove is in communication with the second connecting groove, and the second liquid outlet groove is used to receive milk liquid flowing out of the first liquid outlet groove and make the milk liquid flow out of the milk froth device.

[0012] Optionally, the liquid outlet nozzle comprises a barrel portion and a plurality of separation portions, the second liquid outlet groove is provided in the barrel portion, the plurality of separation portions are arranged on the inner wall of the barrel portion and are spaced apart in the direction surrounding the barrel portion, the plurality of separation portions divide the second liquid outlet groove into a first sub-groove and a second sub-groove in communication, the first sub-groove is in communication with the first liquid outlet groove, and the second sub-groove is located on one side of the first sub-groove away from the first mixing cavity.

[0013] Optionally, the liquid outlet nozzle further comprises a flow guide column, the flow guide column is accommodated in the second liquid outlet groove and is spaced apart from the inner wall of the barrel portion, the flow guide column is connected to at least part of the separation portions, and the flow guide column is used to guide the milk froth liquid to flow out of the second sub-groove in the vertical direction.

[0014] In a second aspect, embodiments of the present application provide a beverage machine, comprising: a housing; the milk froth device according to any one of the preceding milk froth devices, the milk froth device being partially accommodated in the housing.

[0015] By the milk froth device and the beverage machine provided in the present application, the depth of the region in the air inlet groove corresponding to the third through hole can be changed by rotating the air inlet adjusting member, so that the volume of air that can pass through the air inlet groove per unit time can be adjusted, and the volume of air entering the first mixing cavity per unit time can be further adjusted, which is convenient to operate. In this way, the user can adjust the volume of air mixed with the milk liquid according to the demand, so as to adjust the fineness of the milk froth liquid according to the demand, and the user experience can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a beverage machine in an embodiment of the present application.

[0017] Figure 2 FIG. 2 is a front view of the beverage machine in the embodiment of the present application.

[0018] Figure 3 FIG. 3 is a structural exploded view of a milk froth device in the embodiment of the present application.

[0019] Figure 4 FIG. 4 is a first cross-sectional view of the milk froth device in the embodiment of the present application.

[0020] Figure 5 FIG. 5 is a partial structural exploded view of the milk froth device in the embodiment of the present application.

[0021] Figure 6 FIG. 6 is a structural schematic diagram of an air inlet adjusting member in the embodiment of the present application.

[0022] Figure 7 FIG. 7 is a second cross-sectional view of the milk froth device in the embodiment of the present application.

[0023] Figure 8 FIG. 8 is a third cross-sectional view of the milk froth device in the embodiment of the present application.

[0024] Figure 9 FIG. 9 is a structural schematic diagram of the milk froth device in the embodiment of the present application.

[0025] Figure 10 FIG. 10 is a partial structural schematic diagram of a machine shell in the embodiment of the present application.

[0026] MAIN ELEMENT SYMBOL EXPLANATION

[0027] 100, beverage machine; 101, shell; 1011, liquid outlet part; 1012, liquid outlet end; 102, milk froth device; 10, feeding unit; 11, first mixing cavity; 12, first air inlet channel; 13, first liquid inlet channel; 14, second liquid inlet channel; 15, first liquid outlet groove; 16, first through hole; 17, second through hole; 18, third through hole; 19, first protrusion; 110, second mounting groove; 111, fourth mounting groove; 20, air inlet adjusting piece; 21, first connecting part; 211, second air inlet channel; 212, air inlet groove; 213, air inlet hole; 214, first mounting groove; 22, connecting disc; 221, second protrusion; 23, second connecting part; 30, sealing ring; 40, knob piece; 41, first connecting groove; 50, machine shell; 51, cover body; 52, base; 53, first connector; 54, second connector; 55, connecting seat; 551, second connecting groove; 56, liquid outlet nozzle; 561, second liquid outlet groove; 5611, first sub-groove; 5612, second sub-groove; 562, barrel part; 563, separation part; 564, flow guide column; 60, liquid inlet connector; 61, third mounting groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0029] The plurality in the present application refers to two or more. In addition, it should be understood that in the description of the present application, the words "first", "second", etc. are used only for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance or indicating or implying order.

[0030] In the description of the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, illustration, or description. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 Fig. 1 shows a beverage machine 100 provided by the embodiments of the present application.

[0032] In embodiments of the present application, the beverage machine 100 can have a function of grinding the bean material to produce the powder material, and extracting the powder material to produce the beverage liquid. The beverage machine 100 can include a bean grinder (not shown) and an extraction device (not shown). The bean grinder can grind the bean material to produce the powder material, and the extraction device can extract the powder material to produce the beverage liquid.

[0033] In embodiments of the present application, the type of the bean material is not specifically limited. For example, the bean material can be, but is not limited to, coffee beans, soybeans, etc.

[0034] For example, the bean material can be coffee beans, and the powder material can be coffee powder obtained by grinding the coffee beans. The beverage machine 100 can be a coffee machine, and the extraction device of the beverage machine 100 can extract the powder material to produce coffee liquid.

[0035] It can be understood that the principle of the extraction device extracting the powder material to produce the beverage liquid can be the same as or similar to the general principle of extracting coffee powder to produce coffee liquid in a coffee machine in the related art, and will not be described here.

[0036] In an embodiment, the beverage machine 100 can further include a housing 101 and a milk froth device 102. The bean grinder and the extraction device can be accommodated in the housing 101. The housing 101 includes a liquid outlet portion 1011, and a liquid outlet end 1012 of the beverage machine 100 can extend out of the bottom of the liquid outlet portion 1011 in the vertical direction. The beverage liquid produced by the extraction device after extracting the powder material can flow out of the beverage machine 100 through the liquid outlet end 1012.

[0037] The milk froth device 102 is partially accommodated in the liquid outlet portion 1011. The milk froth device 102 can introduce steam, milk liquid, and air, so that the milk liquid can be mixed with the air in the milk froth device 102, and the steam can heat the milk liquid, thereby producing milk froth liquid. The milk froth liquid in the milk froth device 102 can flow out of the bottom of the liquid outlet portion 1011. The steam can be water vapor, and the temperature of the steam is higher than that of the air and the milk liquid. The steam can heat the milk froth liquid by its own heat, so that the temperature of the milk froth liquid is higher than that of the milk liquid.

[0038] It can be understood that when a user uses the beverage machine 100, the user can receive the beverage liquid produced by the extraction of the extraction device from the liquid outlet end 1012. Then, the user can operate the beverage machine 100 to produce milk froth liquid in the milk froth device 102, and the user can continue to receive the milk froth liquid through the container receiving the beverage liquid, thereby obtaining the beverage liquid added with the milk froth liquid.

[0039] For example, the beverage machine 100 can be a coffee machine, the beverage liquid can be coffee liquid, and the user can make drinks such as latte by adding milk froth liquid to the coffee liquid.

[0040] In the embodiments of the present application, the length direction, the width direction and the height direction of the beverage machine 100 can be defined as the first direction, the second direction and the vertical direction respectively. For example, the first direction can be the X direction and the opposite direction thereof as shown in Figure 1 and Figure 2 The second direction can be the Y direction and the opposite direction thereof as shown in Figure 1 and the vertical direction can be the Z direction and the opposite direction thereof as shown in Figure 1 and Figure 2 .

[0041] It can be understood that the number of the liquid outlet ends 1012 can be one or more, and the embodiments of the present application do not limit the number of the liquid outlet ends 1012. For example, the number of the liquid outlet ends 1012 is two, and the two liquid outlet ends 1012 are arranged at intervals in the first direction.

[0042] Please refer to Figure 3 and Figure 4 , in some embodiments, the milk froth device 102 can include a feeding unit 10.

[0043] The feeding unit 10 is provided with a first mixing cavity 11, a first air inlet channel 12, a first liquid inlet channel 13, a second liquid inlet channel 14 and a first liquid outlet groove 15. The first mixing cavity 11 is arranged at the top of the feeding unit 10 in the vertical direction, and the first mixing cavity 11 extends downward in the vertical direction. The first liquid outlet groove 15 is arranged at the bottom of the feeding unit 10 in the vertical direction. A first through hole 16 is arranged on the bottom wall of the first mixing cavity 11, and the first through hole 16 is in communication with the first mixing cavity 11 and the first liquid outlet groove 15, so as to realize the communication between the first mixing cavity 11 and the first liquid outlet groove 15.

[0044] The first air inlet channel 12 is arranged at the first side of the feeding unit 10 in the first direction, and a second through hole 17 is arranged on the inner wall of the first air inlet channel 12 at the second side in the first direction. The second through hole 17 is in communication with the first air inlet channel 12 and the first mixing cavity 11, so as to realize the communication between the first air inlet channel 12 and the first mixing cavity 11. The first liquid inlet channel 13 is arranged at the second side of the feeding unit 10 in the first direction, and the second liquid inlet channel 14 is arranged between the first mixing cavity 11 and the first liquid inlet channel 13 in the first direction. The second liquid inlet channel 14 extends along the first direction and is in communication with the first liquid inlet channel 13 and the first mixing cavity 11, so as to realize the communication between the first liquid inlet channel 13 and the first mixing cavity 11.

[0045] The first air inlet channel 12 can be connected to an air source, and the air entering the first air inlet channel 12 can enter the first mixing chamber 11 through the second air inlet hole 17. The opening of the first mixing chamber 11 penetrating the top of the milk inlet unit 10 can be connected to a steam source. The first liquid inlet channel 13 can be connected to a milk source, and the milk in the first liquid inlet channel 13 can flow into the first mixing chamber 11 through the second liquid inlet channel 14. In this way, the steam, milk and air in the first mixing chamber 11 can be mixed to form a milk froth liquid with a higher temperature than the milk in the first liquid inlet channel 13. The milk froth liquid can flow into the first liquid outlet groove 15 through the first liquid outlet hole 16 under the action of gravity and flow out of the first liquid outlet groove 15.

[0046] In some embodiments, the diameter of the first liquid outlet hole 16 can be smaller than the diameter of the middle portion of the first mixing chamber 11 in the vertical direction, and the inner wall of the bottom of the first mixing chamber 11 can be inclinedly arranged such that the diameter of the bottom of the first mixing chamber 11 gradually decreases along the direction from the top of the first mixing chamber 11 towards the bottom. The inclinedly arranged inner wall of the first mixing chamber 11 can block the flow of the milk froth liquid in the first mixing chamber 11, and in combination with the arrangement that the diameter of the first liquid outlet hole 16 is smaller than the diameter of the middle portion of the first mixing chamber 11, the flow rate of the milk froth liquid flowing from the first mixing chamber 11 to the first liquid outlet groove 15 can be reduced.

[0047] It can be understood that the coffee machine can include a steam inlet device (not shown in the figure), which can drive steam to enter the first mixing chamber 11 and flow in the first mixing chamber 11 in the direction towards the first liquid outlet groove 15. When the steam enters the first mixing chamber 11 and flows towards the first liquid outlet groove 15, the flow of the steam can generate a negative pressure in the first mixing chamber 11, so that the gas in the first air inlet channel 12 can enter the first mixing chamber 11 under the suction of the negative pressure, and the milk in the first liquid inlet channel 13 and the second liquid inlet channel 14 can enter the first mixing chamber 11 under the suction of the negative pressure, so that the air, steam and milk all enter the first mixing chamber 11 and mix, thereby enabling the milk froth device 102 to process and form the milk froth liquid.

[0048] It can be understood that the first side and the second side in the first direction are two opposite sides. For example, the first side in the first direction can be the side facing away from the X direction shown in FIG. 1, i.e. the side marked as A in FIG. 1; and the second side in the first direction can be the side facing towards the X direction shown in FIG. 1, i.e. the side marked as B in FIG. 1. Figure 4 Figure 4 It can be understood that the first side and the second side in the first direction are two opposite sides. For example, the first side in the first direction can be the side facing away from the X direction shown in FIG. 1, i.e. the side marked as A in FIG. 1; and the second side in the first direction can be the side facing towards the X direction shown in FIG. 1, i.e. the side marked as B in FIG. 1. Figure 4 Figure 4 It can be understood that the first side and the second side in the first direction are two opposite sides. For example, the first side in the first direction can be the side facing away from the X direction shown in FIG. 1, i.e. the side marked as A in FIG. 1; and the second side in the first direction can be the side facing towards the X direction shown in FIG. 1, i.e. the side marked as B in FIG. 1.

[0049] Please refer to Figure 5 and Figure 6 ​​In some embodiments, the milk frothing device 102 can further comprise an air inlet adjusting member 20. The air inlet adjusting member 20 is rotatably connected to the first air inlet channel 12, and the rotational center axis of the air inlet adjusting member 20 can coincide with the first direction.

[0050] The air inlet adjusting member 20 can comprise a first connecting portion 21 and a connecting disc 22. The first connecting portion 21 is inserted into and rotatably connected to the first air inlet channel 12. A second air inlet channel 211 is formed in the middle of the first connecting portion 21, and the second air inlet channel 211 penetrates the first connecting portion 21 along the first direction and communicates with the first air inlet channel 12. A third through hole 18 is formed in the feeding unit 10, and the third through hole 18 is formed in the bottom of the part of the feeding unit 10 where the first air inlet channel 12 is formed, and the third through hole 18 communicates with the first air inlet channel 12. An air inlet groove 212 is formed in the peripheral wall of the first connecting portion 21, and the air inlet groove 212 extends along the direction surrounding the first connecting portion 21, i.e. the direction of rotation of the air inlet adjusting member 20. The air inlet groove 212 corresponds to the third through hole 18 in the vertical direction and communicates with the third through hole 18. In the extension direction of the air inlet groove 212, the air inlet groove 212 has a first end and a second end, the depth of the first end of the air inlet groove 212 is less than the depth of the second end, and the depth of the air inlet groove 212 gradually decreases along the direction from the first end to the second end. An air inlet hole 213 is formed in the inner wall of the air inlet groove 212, the air inlet hole 213 communicates with the air inlet groove 212 and the second air inlet channel 211, and the air inlet hole 213 is located at the second end of the air inlet groove 212.

[0051] The connecting disc 22 can be integrally formed and fixed with the first connecting portion 21, and the connecting disc 22 is located on the first side of the first connecting portion 21 in the first direction. The connecting disc 22 can shield the opening of the first side of the first air inlet channel 12 in the first direction. The diameter of the connecting disc 22 is greater than the diameter of the first connecting portion 21, and the second side of the connecting disc 22 in the first direction can abut against the side of the feeding unit 10 where the first air inlet channel 12 is formed, and rotate with the feeding unit 10.

[0052] It can be understood that air can enter the air inlet groove 212 through the third through hole 18, and then sequentially pass through the air inlet groove 212, the air inlet hole 213 and the second air inlet channel 211, and then enter the first air inlet channel 12. The air in the first air inlet channel 12 can enter the first mixing cavity 11 through the second through hole 17.

[0053] When the air inlet adjusting member 20 rotates, the region of the air inlet groove 212 facing the third through hole 18 changes, and the depth of the region of the air inlet groove 212 corresponding to the third through hole 18 changes. The depth of the region of the air inlet groove 212 corresponding to the third through hole 18 can limit the flow rate of air entering the air inlet groove 212 and flowing toward the air inlet hole 213. The flow rate of air can refer to the volume of air entering the air inlet groove 212 per unit time.

[0054] Please refer to Figures 7 to 9 , Figure 7 The state of the air inlet adjusting member 20 when the third through hole 18 corresponds to the first end of the air inlet groove 212 is shown. Figure 8 The state of the air inlet adjusting member 20 when the third through hole 18 corresponds to the second end of the air inlet groove 212 is shown. When the air inlet adjusting member 20 rotates, the second end of the air inlet groove 212 can be brought closer to the third through hole 18, thereby increasing the depth of the region of the air inlet groove 212 corresponding to the third through hole 18; or the second end of the air inlet groove 212 can be brought away from the third through hole 18, thereby reducing the depth of the region of the air inlet groove 212 corresponding to the third through hole 18.

[0055] When the depth of the region of the air inlet groove 212 corresponding to the third through hole 18 increases, the volume of air entering the air inlet groove 212 per unit time increases, thereby increasing the volume of air entering the first mixing chamber 11 per unit time; when the depth of the region of the air inlet groove 212 corresponding to the third through hole 18 decreases, the volume of air entering the air inlet groove 212 per unit time decreases, thereby reducing the volume of air entering the first mixing chamber 11 per unit time.

[0056] It can be understood that the user can adjust the volume of air entering the first mixing chamber 11 per unit time by rotating the air inlet adjusting member 20, so that the user can adjust the volume of air mixed with the milk liquid, and the user can improve the quality of the milk foam liquid according to the production requirements of the beverage, thereby improving the user experience.

[0057] In some embodiments, a first mounting groove 214 can be formed on the peripheral wall of the first connecting portion 21, and a sealing ring 30 can be accommodated in the first mounting groove 214. The sealing ring 30 can be in contact with the inner wall of the first mounting groove 214 and the inner wall of the first air inlet passage 12. The sealing ring 30 in the first mounting groove 214 can block air, reduce the probability of air leakage from the gap between the first connecting portion 21 and the first air inlet passage 12, reduce the probability of insufficient air mixed in the milk foam liquid, and improve the quality of the milk foam liquid.

[0058] In some embodiments, the first protrusion 19 is integrally formed on the peripheral wall of the feeding unit 10 and is located on the peripheral wall of the first side of the feeding unit 10 in the first direction, i.e., on the peripheral wall of the side through which the first air inlet channel 12 penetrates the feeding unit 10. The first protrusion 19 extends in a direction surrounding the first air inlet channel 12, and the two ends of the first protrusion 19 are spaced apart, and a spacing space is formed between the two ends.

[0059] The second protrusion 221 is integrally formed on the second side of the connecting disc 22 in the first direction, and can be accommodated in the spacing space. In the direction surrounding the first air inlet channel 12, the distance between the two ends of the second protrusion 221 (i.e., the length of the spacing space) is greater than the width of the second protrusion 221. The rotation of the connecting disc 22 can drive the second protrusion 221 to rotate synchronously in the spacing space. When the second protrusion 221 abuts one end of the first protrusion 19, the first end of the air inlet groove 212 can correspond to and communicate with the third through hole 18; when the second protrusion 221 abuts the other end of the first protrusion 19, the second end of the air inlet groove 212 can correspond to and communicate with the third through hole 18.

[0060] It can be understood that when the air inlet adjusting member 20 rotates, the two ends of the first protrusion 19 can block the second protrusion 221. When the two ends of the first protrusion 19 abut the second protrusion 221, the rotation of the air inlet adjusting member 20 can be blocked. In this way, the cooperation of the first protrusion 19 and the second protrusion 221 can limit the rotation angle of the air inlet adjusting member 20, so that the third through hole 18 can maintain communication with the air inlet groove 212 during the rotation of the air inlet adjusting member 20, reduce the probability that the third through hole 18 is blocked by the peripheral wall of the first connecting part 21, and improve the quality of the milk foam.

[0061] In some embodiments, the milk foam device 102 can further include a knob member 40. A first connecting groove 41 can be formed on the second side of the knob member 40 in the first direction, and the first connecting groove 41 is a groove.

[0062] The air inlet adjusting member 20 can further include a second connecting part 23. The second connecting part 23 is integrally formed with the connecting disc 22 and is located on the second side of the connecting disc 22 in the first direction. The second connecting part 23 extends in the first direction. The second connecting part 23 can be inserted into the first connecting groove 41, so that the first connecting part 21 and the knob member 40 are relatively fixed in the rotation direction of the air inlet adjusting member 20.

[0063] It can be understood that the second connecting portion 23 and the first connecting groove 41 can be designed to prevent mistakes, and the cross section of the first connecting groove 41 can be circular, and the shape of the cross section of the second connecting portion 23 matches the shape of the cross section of the first connecting groove 41. In the embodiments of the present application, the shape of the cross section of the first connecting groove 41 and the second connecting portion 23 is not specifically limited. For example, the cross section of the first connecting groove 41 is semicircular, the cross section of the second connecting portion 23 is irregular annular, and the projection of the second connecting portion 23 in the first direction is semicircular.

[0064] It can be understood that the first side of the knob 40 in the first direction can extend out of the liquid outlet 1011, and the knob 40 can rotate relative to the liquid outlet 1011.

[0065] The user can hold the knob 40 from the first side of the knob 40 in the first direction and rotate the knob 40, thereby driving the air inlet adjusting member 20 to rotate synchronously, so as to adjust the volume of air entering the air inlet groove 212 per unit time.

[0066] Please refer to Figure 9 In some embodiments, the milk froth device 102 can further include a housing 50. The feeding unit 10 can be accommodated in the housing 50, and the air inlet adjusting member 20 can be accommodated in the housing 50. The first side and the second side of the housing 50 in the first direction are open. The knob 40 can extend out of the housing 50 from the first side of the housing 50 in the first direction, and rotate with the housing 50.

[0067] The housing 50 can include a cover 51, a base 52, a first connector 53, and a second connector 54. The cover 51 and the base 52 are arranged in the vertical direction. The cover 51 and the base 52 are detachably connected. The first connector 53 is integrally formed on the inner wall of the cover 51 and extends in the vertical direction towards the base 52.

[0068] The first connector 53 enters the first mixing cavity 11 from the top to be inserted into the first mixing cavity 11. The height of the bottom end of the first connector 53 can be greater than the height of the first through hole 16 and less than the height of the second through hole 17, that is, the first connector 53 extends to the second side of the air inlet hole 213 in the first direction and blocks the air inlet hole 213 in the first direction; the first connector 53 is arranged on the side wall of the first mixing cavity 11 in the first direction. At the same time, the first connector 53 can be located on the first side of the second liquid inlet passage 14 in the first direction and block the second liquid inlet passage 14 in the first direction. A passage extending through the first connector 53 in the vertical direction can be formed in the first connector 53, and the passage in the first connector 53 can be used for steam to pass through.

[0069] The second joint 54 can be integrally formed on the outer side of the top cover and located at the top of the top cover. The second joint 54 can be provided with a channel penetrating the second joint 54 in the vertical direction, and the channel in the second joint 54 can be used for passing steam. The second joint 54 can be in communication with the first joint 53. The second joint 54 can be connected to the steam.

[0070] It can be understood that the second joint 54 can be connected and communicated with the air inlet device. The air inlet device can drive the steam to enter the milk foam device 102 from the second joint 54. The steam can flow through the second joint 54 and the first joint 53, and then enter the first mixing cavity 11.

[0071] In the embodiments of the present application, the detachable connection manner is not specifically limited. For example, the detachable connection manner can include, but is not limited to, screw connection, buckle connection, and adhesive connection, etc.

[0072] It can be understood that the first joint 53 can be arranged in the first direction to keep a distance from the air inlet hole 213 and the second liquid inlet channel 14, and to block the air inlet hole 213 and the second liquid inlet channel 14. In this way, the probability of air entering the second liquid inlet channel 14 after passing through the air inlet hole 213 and the first mixing cavity 11 can be reduced, and the probability of milk entering the first air inlet channel 12 after passing through the second liquid inlet channel 14, the first mixing cavity 11 and the air inlet hole 213 can be reduced, and the probability of milk and air blocking each other can be reduced.

[0073] In the embodiments of the present application, the way of air entering the casing 50 is not specifically limited. For example, air can enter the casing 50 through the gap between the casing 50 and the knob 40, and then enter the air inlet groove 212 through the third through hole 18. For another example, the casing 50 can be provided with a through hole, and air can enter the casing 50 through the through hole of the casing 50, and then enter the air inlet groove 212 through the third through hole 18.

[0074] In some embodiments, the feeding unit 10 is provided with a second mounting groove 110 at the top in the vertical direction, and the second mounting groove 110 is in communication with the first mixing cavity 11. The second mounting groove 110 contains a sealing ring 30. The sealing ring 30 can abut against the inner wall of the second mounting groove 110, the first joint 53 and the inner wall of the cover 51. The sealing ring 30 in the second mounting groove 110 can seal the gap between the feeding unit 10 and the cover 51, so as to reduce the probability of air in the first mixing cavity 11 leaking from the gap between the feeding unit 10 and the cover 51, and improve the quality of the milk foam liquid.

[0075] In some embodiments, the milk frothing device 102 can further comprise a liquid inlet connector 60. The liquid inlet connector 60 can be connected to the first liquid inlet channel 13 from the second side of the feeding unit 10 in the first direction. A channel can be formed in the liquid inlet connector 60 in the first direction, and the channel in the liquid inlet connector 60 can allow milk to pass through. The liquid inlet connector 60 can be in communication with the first liquid inlet channel 13.

[0076] The liquid inlet connector 60 can be connected to a storage device (not shown in the figure) by a pipe. The storage device can store milk. When steam flows through the first mixing chamber 11 to generate negative pressure in the first mixing chamber 11, the milk in the storage device can flow to the liquid inlet connector 60 through the pipe under the drive of the negative pressure, and enter the first mixing chamber 11 through the first liquid inlet channel 13 and the second liquid inlet channel 14.

[0077] In some embodiments, the liquid inlet connector 60 can be provided with a third mounting groove 61 on the peripheral wall. A sealing ring 30 can be accommodated in the third mounting groove 61. The sealing ring 30 can abut against the inner wall of the third mounting groove 61 and the inner wall of the first liquid inlet channel 13. The sealing ring 30 in the third mounting groove 61 can seal the gap between the inner wall of the first liquid inlet channel 13 and the peripheral wall of the liquid inlet connector 60, so as to reduce the probability of air leakage from the gap between the inner wall of the first liquid inlet channel 13 and the peripheral wall of the liquid inlet connector 60, and allow milk to flow to the first mixing chamber 11 under the action of negative pressure in the first mixing chamber 11, and improve the quality of the milk froth.

[0078] Please refer to Figure 10 In some embodiments, the casing 50 can further comprise a connecting seat 55 and a liquid outlet nozzle 56.

[0079] The connecting seat 55 can be integrally formed on the inner wall of the base 52 and extend in the vertical direction towards the cover 51. The connecting seat 55 can be provided with a second connecting groove 551 extending through the connecting seat 55 in the vertical direction. The bottom of the feeding unit 10 can be inserted into the second connecting groove 551 in the vertical direction, and the connecting seat 55 can be sleeved on the bottom of the feeding unit 10. The bottom of the feeding unit 10 can abut against the inner wall of the base 52.

[0080] The liquid outlet nozzle 56 can include a cylindrical body portion 562, a partition portion 563, and a flow guide column 564. The cylindrical body portion 562 is fixed to the outer side of the base 52 and extends in the vertical direction away from the cover 51. A second liquid outlet groove 561 is formed in the cylindrical body portion 562 and extends through the cylindrical body portion 562 in the vertical direction. The second liquid outlet groove 561 is in communication with the second connecting groove 551 and the first liquid outlet groove 15. The milk foam liquid flowing out of the first liquid outlet groove 15 can flow out of the liquid outlet nozzle 56 through the second liquid outlet groove 561 and then flow out of the beverage machine 100.

[0081] The liquid outlet nozzle 56 can include a cylindrical body portion 562, a partition portion 563, and a flow guide column 564. The cylindrical body portion 562 is fixed to the outer side of the base 52 and extends in the vertical direction away from the cover 51. A second liquid outlet groove 561 is formed in the cylindrical body portion 562 and extends through the cylindrical body portion 562 in the vertical direction. The second liquid outlet groove 561 is in communication with the second connecting groove 551 and the first liquid outlet groove 15. The milk foam liquid flowing out of the first liquid outlet groove 15 can flow out of the liquid outlet nozzle 56 through the second liquid outlet groove 561 and then flow out of the beverage machine 100.

[0082] The partition portion 563 can be in a plurality of numbers, and each of the plurality of partition portions 563 is fixed to the inner wall of the cylindrical body portion 562. The plurality of partition portions 563 can be located at the middle of the cylindrical body portion 562 in the vertical direction and can be spaced apart around the cylindrical body portion 562. The plurality of partition portions 563 can divide the second liquid outlet groove 561 into a first sub-groove 5611 and a second sub-groove 5612 arranged adjacent to each other in the vertical direction. The first sub-groove 5611 can be located above the plurality of partition portions 563 in the vertical direction and is in communication with the first liquid outlet groove 15. The second sub-groove 5612 can be located below the plurality of partition portions 563 in the vertical direction and penetrates the bottom of the cylindrical body portion 562. The second sub-groove 5612 can be in communication with the first sub-groove 5611 through the gaps between the plurality of partition portions 563. The milk foam liquid in the first sub-groove 5611 can flow into the second sub-groove 5612 through the gaps between the plurality of partition portions 563 and then flow out of the liquid outlet nozzle 56 through the second sub-groove 5612.

[0083] The flow guide column 564 can be accommodated in the second liquid outlet groove 561 and can be located at the middle of the second liquid outlet groove 561 in both the first direction and the second direction. The flow guide column 564 can be fixed to at least some of the plurality of partition portions 563. The top of the flow guide column 564 can be located in the first sub-groove 5611, and the flow guide column 564 can penetrate the second sub-groove 5612 and extend out of the second sub-groove 5612 from the bottom of the cylindrical body portion 562.

[0084] It can be understood that the first sub-groove 5611 and the first liquid outlet groove 15 can cooperate to form a second mixing cavity. The partition 563 can block the flow of milk foam liquid, thereby reducing the speed of the milk foam liquid flowing from the first sub-groove 5611 to the second sub-groove 5612, increasing the time of the milk foam liquid staying in the second mixing cavity, allowing the milk foam liquid and air mixing process to continue in the second mixing cavity, thereby increasing the time of the milk foam liquid absorbing the heat of the steam, and increasing the time of the air contacting the milk liquid, thereby increasing the temperature of the milk foam liquid and improving the fineness of the milk foam liquid, and improving the quality of the milk foam liquid.

[0085] The flow guide column 564 can be in contact with the milk foam liquid and guide the milk foam liquid to flow downward along the extension direction of the flow guide column 564 (i.e., the vertical direction), thereby reducing the probability of the milk foam liquid generated by the milk frothing device 102 flowing out of the milk frothing device 102 and splashing in multiple directions, improving the smoothness and stability of the milk foam liquid flowing out of the milk frothing device 102, and improving the user experience.

[0086] In some embodiments, a fourth mounting groove 111 can be formed on the peripheral wall of the feeding unit 10, the fourth mounting groove 111 can be located at the bottom of the feeding unit 10 in the vertical direction, and the fourth mounting groove 111 can be arranged around the first liquid outlet groove 15. The fourth mounting groove 111 can accommodate a sealing ring 30. The sealing ring 30 can abut against the inner wall of the fourth mounting groove 111 and the inner wall of the second connecting groove 551. The sealing ring 30 can seal the gap between the feeding unit 10 and the inner wall of the second connecting groove 551, thereby reducing the probability of air and milk foam liquid leaking from the gap between the feeding unit 10 and the inner wall of the second connecting groove 551.

[0087] In the embodiments of the present application, the material of the sealing ring 30 is not specifically limited. For example, the material of the sealing ring 30 can be, but is not limited to, rubber or silicone.

[0088] The beverage machine 100 and the milk froth device 102 provided by the embodiments of the present application can enable a user to receive the beverage liquid generated by the beverage machine 100 through the liquid outlet end 1012 extending from the bottom of the liquid outlet 1011. When the user needs to add milk froth liquid to the beverage liquid, the user can operate the coffee machine to enable the air inlet device to spray steam into the first mixing cavity 11 through the second joint 54 and the first joint 53. The steam can pass through the first mixing cavity 11, the third through hole 18, the first liquid outlet groove 15, and the second liquid outlet groove 561, and generate negative pressure in the first mixing cavity 11. Under the action of the negative pressure, the milk liquid can enter the first mixing cavity 11 through the liquid inlet joint 60, the first liquid inlet passage 13, and the second liquid inlet passage 14, and the air can enter the first mixing cavity 11 through the third through hole 18, the air inlet groove 212, the air inlet hole 213, the second air inlet passage 211, the first air inlet passage 12, and the second through hole 17. The steam, the air, and the milk liquid can be mixed in the first mixing cavity 11 and flow into the first liquid outlet groove 15 and the first sub-groove 5611 under the action of gravity. The steam, the air, and the milk liquid can continue to be mixed in the second mixing cavity formed by the first liquid outlet groove 15 and the first sub-groove 5611, so as to generate the milk froth liquid. The milk froth liquid can flow to the second sub-groove 5612 through the gaps between the plurality of partitioning portions 563, and flow out of the liquid outlet nozzle 56 along the direction in which the flow guide column 564 extends. The user can receive the milk froth liquid from the position where the liquid outlet nozzle 56 extends out of the liquid outlet 1011.

[0089] When the user needs to adjust the fineness of the milk froth liquid, the user can rotate the knob 40, so as to drive the air inlet adjusting member 20 to rotate, change the region of the air inlet groove 212 corresponding to the third through hole 18, and change the flow rate of the air entering the air inlet groove 212 from the third through hole 18. In this way, the volume of the air entering the first mixing cavity 11 per unit time can be adjusted, so as to adjust the fineness of the milk froth liquid by adjusting the volume of the air mixed with the milk liquid.

[0090] It can be understood that the synchronous rotation of the air inlet adjusting member 20 by rotating the knob 40 can change the depth of the region of the air inlet groove 212 corresponding to the third through hole 18, so as to adjust the volume of the air passing through the air inlet groove 212 per unit time, and further adjust the volume of the air entering the first mixing cavity 11 per unit time. In this way, the user can adjust the volume of the air mixed with the milk liquid according to the demand, so as to adjust the fineness of the milk froth liquid according to the demand, and improve the user experience.

[0091] The second mixing cavity can increase the time for the air, the milk liquid, and the steam to stay in the milk froth device 102, so as to increase the time for the steam to heat the milk liquid and for the milk liquid to mix with the air, improve the quality of the milk froth liquid, and improve the user experience.

[0092] It is apparent that a person skilled in the art can, without departing from the scope of the application, implement the application in other specific forms, and therefore the described embodiments should be considered as exemplary only and not limiting of the application, whose scope is defined by the claims appended hereinafter, rather than the description preceding it, which is therefore merely intended to provide an explanatory interpretation of the application.

Claims

1. A milk frothing device, characterized in that, The milk froth device comprises: a feeding unit, a first mixing cavity, a first air inlet channel and a first liquid outlet groove are arranged in the feeding unit, the first mixing cavity is communicated with the first air inlet channel, the first mixing cavity is used for introducing air, steam and milk liquid, and the air, steam and milk liquid are mixed to form a milk froth liquid, the first liquid outlet groove is communicated with the first mixing cavity, and the first liquid outlet groove is used for flowing out the milk froth liquid from the feeding unit; an air inlet adjusting member, the air inlet adjusting member is rotatably connected to the first air inlet channel, an air inlet groove is arranged on the peripheral wall of the air inlet adjusting member, the depth of the air inlet groove gradually decreases in the direction from the first end to the second end of the air inlet groove, an air inlet hole is arranged on the inner wall of the air inlet groove, the air inlet groove is communicated with the first air inlet channel through the air inlet hole, and the air inlet hole is located at the second end of the air inlet groove; and the air inlet adjusting member is used for rotating to adjust the flow of air entering the air inlet groove.

2. A milk frothing device as claimed in claim 1, characterized in that The first air inlet channel penetrates one side of the feeding unit in a first direction, a first protrusion is arranged on the peripheral wall of the feeding unit, the first protrusion extends in the direction surrounding the first air inlet channel, and a spacing space is formed between the two ends of the first protrusion, and the air inlet adjusting member comprises: a first connecting part, the first connecting part is rotatably connected to the first air inlet channel; a connecting disc, the connecting disc is connected to one side of the first connecting part in the first direction, a second protrusion is arranged on the connecting disc, the second protrusion is located in the spacing space, and the second protrusion is used for abutting against the two ends of the first protrusion to limit the rotation angle of the air inlet adjusting member.

3. The milk frothing device of claim 1, wherein The milk froth device further comprises: a knob member, a first connecting groove is arranged on one side of the knob member in a first direction, the air inlet adjusting member is partially inserted into the first connecting groove, and the knob member is used for rotating the air inlet adjusting member.

4. A milk frothing device as claimed in claim 3, characterized in that The first air inlet channel penetrates one side of the feeding unit in the first direction, and the air inlet adjusting member comprises: a first connecting part, the first connecting part is rotatably connected to the first air inlet channel; a second connecting part, the second connecting part is located on one side of the first connecting part in the first direction, and the second connecting part is inserted into the first connecting groove.

5. The milk frothing device of claim 1, wherein The feeding unit is further provided with a first liquid inlet channel, the first liquid inlet channel is communicated with the first mixing cavity, and the milk froth device further comprises: a liquid inlet connector, the liquid inlet connector is inserted into the first liquid inlet channel, the liquid inlet connector is communicated with the first liquid inlet channel, and the liquid inlet connector is used for introducing milk liquid.

6. The milk frothing device of claim 1, wherein The first mixing cavity penetrates one side of the feeding unit in a vertical direction, and the milk froth device further comprises: The casing, in which the feeding unit is at least partially accommodated and the air adjusting member is at least partially accommodated, comprises a cover, a base, a first joint and a second joint, the cover and the base are arranged in the vertical direction, the first joint is connected to the inner wall of the cover, the first joint is inserted into the first mixing cavity and communicates with the first mixing cavity; the second joint is connected to the outer side of the cover and connected with the first joint, the second joint is used for passing steam.

7. A milk frothing device as claimed in claim 6, characterized in that The first liquid outlet groove penetrates one side of the feeding unit in the vertical direction, and the casing further comprises: a connecting seat, a second connecting groove is formed in the connecting seat, the second connecting groove is used for accommodating the side of the feeding unit in which the first liquid outlet groove is formed, and the second connecting groove communicates with the first liquid outlet groove; a liquid outlet nozzle, the liquid outlet nozzle is provided with a second liquid outlet groove, the second liquid outlet groove penetrates the liquid outlet nozzle in the vertical direction, the second liquid outlet groove communicates with the second connecting groove, the second liquid outlet groove is used for receiving milk liquid flowing out of the first liquid outlet groove and making the milk liquid flow out of the milk froth device.

8. A milk frothing device as claimed in claim 7, characterized in that The liquid outlet nozzle comprises: a barrel portion, the second liquid outlet groove is formed in the barrel portion; a plurality of separation portions, the plurality of separation portions are arranged on the inner wall of the barrel portion and are arranged at intervals in the direction surrounding the barrel portion, the plurality of separation portions separate the second liquid outlet groove into a first sub-groove and a second sub-groove in communication, the first sub-groove communicates with the first liquid outlet groove, and the second sub-groove is located on the side of the first sub-groove away from the first mixing cavity.

9. A milk frothing device as claimed in claim 8, characterized in that The liquid outlet nozzle further comprises: a flow guide column, the flow guide column is accommodated in the second liquid outlet groove and is arranged at intervals with the inner wall of the barrel portion, the flow guide column is connected with at least part of the separation portions, and the flow guide column is used for guiding the milk froth liquid to flow out of the second sub-groove in the vertical direction.

10. A beverage machine characterized by The beverage machine comprises: a housing; the milk froth device according to any one of claims 1 to 9, the milk froth device is partially accommodated in the housing.

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