Beverage machine

Abstract

The utility model provides a beverage machine, which comprises a main machine body, a liquid supply pipeline and an output pipeline, the blender is arranged on the main machine body, the blender is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is used for communicating with the liquid supply pipeline, and the liquid outlet pipe is used for communicating with the output pipeline; the mixer comprises a mixing barrel, blades located in the mixing barrel and a driving mechanism, the driving mechanism comprises a motor and a driving shaft, the driving shaft is connected with the blades, a first transmission structure and a second transmission structure are arranged between the motor and the driving shaft, and the motor drives the driving shaft to rotate through the first transmission structure; the motor drives the driving shaft to move in the axial direction through the second transmission structure. The second transmission structure comprises a transmission part and a guide part, the driving shaft is connected to the transmission part, and the transmission part and the guide part are matched to drive the driving shaft to move in the axial direction. Two transmission paths are arranged, so that the blades can move in the axial direction when rotating around the driving shaft, the area in contact with the blades for stirring is larger, and stirring is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage making equipment, in particular to a beverage machine. Background Art

[0002] At present, for beverage making equipment on the market, especially in commercial beverage machines for making coffee beverages, the types of beverages need to be increased, including espresso, Americano, and also beverages such as latte and cappuccino with milk and milk foam. In order to increase the flavor of coffee and the diversification of beverages, a mixer is often required to mix different beverage raw materials to match coffee or directly output beverages. For example, mocha is made by mixing cocoa powder with coffee. For various types of coffee and beverages above, various commercial and business coffee machines are equipped with mixers to meet the diverse needs of most market customers.

[0003] In the prior art, due to the limited internal space of the coffee machine and the limited size of the mixer, a high powder-to-water ratio cannot be achieved during stirring. This is because, even if the amount of powder is increased, the powder cannot be fully dissolved when it enters the cavity of the mixer. Not only can the beverage concentration not be increased, resulting in waste of powder, but even the excess undissolved powder will cause blockage of the mixer and aggravate the hygiene problem, greatly reducing the customer experience and the performance of the machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a beverage machine that can improve the quality of beverages.

[0005] To achieve the above-mentioned utility model purpose, the utility model provides a beverage machine, including:

[0006] A main body, having a liquid supply pipeline and an output pipeline;

[0007] A mixer, disposed in the main body, the mixer having an inlet pipe and an outlet pipe, the inlet pipe being used to connect to the liquid supply pipeline, and the outlet pipe being used to connect to the output pipeline;

[0008] The mixer includes a mixing cylinder, blades located in the mixing cylinder, and a driving mechanism. The driving mechanism includes a motor and a driving shaft. The driving shaft is connected to the blades. A first transmission structure and a second transmission structure are provided between the motor and the driving shaft. The motor drives the driving shaft to rotate through the first transmission structure, and the motor drives the driving shaft to move axially through the second transmission structure;

[0009] The second transmission structure includes a transmission component and a guiding portion. The driving shaft is connected to the transmission component, and the cooperation between the transmission component and the guiding portion drives the driving shaft to move axially.

[0010] Compared with the prior art, the beneficial effect of the utility model lies in that: by arranging two transmission structures between the motor and the drive shaft, the blades can not only rotate around the drive shaft, but also move along the axial direction of the drive shaft with the drive shaft, so that the area that can be in contact with the blades for stirring is larger, the stirring is more uniform, the powder-water ratio is higher, and the prepared beverage has a higher concentration and a better taste.

[0011] As a further improvement of an embodiment of the utility model, the motor has an output shaft drivingly connected to the drive shaft, the drive shaft can move axially relative to the output shaft, and the axis of the output shaft is colinear or parallel to the axis of the drive shaft in the vertical direction.

[0012] As a further improvement of an embodiment of the utility model, the second transmission structure includes a transmission box and a transmission member arranged in the transmission box, the motor is connected to the transmission member to drive the transmission member; one of the transmission member and the guide part is arranged on the transmission member, and the other of the transmission member and the guide part is arranged in the transmission box.

[0013] As a further improvement of one embodiment of the utility model, the transmission component and the transmission member are fixed along the circumference of the drive shaft, the transmission component includes a radially protruding guide pin, the guide portion is constructed as a track groove extending circumferentially along the inner wall of the transmission box, the track groove has a drop in the axial direction of the drive shaft, the guide pin rotates along the track groove, and the transmission component produces axial movement within the range of the drop.

[0014] As a further improvement of an embodiment of the utility model, a protrusion and a pressure plate are arranged on the drive shaft at intervals along the axial direction, the transmission component is located between the protrusion and the pressure plate, and the protrusion protrudes radially along the drive shaft.

[0015] As a further improvement of one embodiment of the utility model, the transmission component is axially fixed to the drive shaft, the guide portion is constructed as a track surface extending in the circumferential direction, the track surface is arranged on the end face of the transmission component, the track surface has a drop in the axial direction of the drive shaft, and the transmission component generates axial movement within the range of the drop as the transmission component rotates.

[0016] As a further improvement of one embodiment of the utility model, a limit groove is provided on the transmission box, and the limit groove extends along the axial direction of the drive shaft. The transmission component includes a limit pin, and the limit pin extends into the limit groove; a clamping ring is provided on the drive shaft, and the clamping ring is fixed on the drive shaft, and the transmission component is located on the side of the clamping ring away from the blade; an elastic element is provided between the transmission component and the transmission box, and the elastic element presses the transmission component toward the transmission member.

[0017] As a further improvement of an embodiment of the present utility model, the second transmission structure includes a planetary reduction assembly disposed in the transmission box. The planetary reduction assembly includes at least one set of planetary reduction gear sets. Each planetary reduction gear set includes a sun gear, a ring gear, and planet gears respectively meshing with the sun gear and the ring gear. The diameter of the planet gears is greater than that of the sun gear. The motor has an output shaft. The sun gear in at least one set of the planetary reduction gear sets is in transmission connection with the output shaft, and the planet gears in at least one set of the planetary reduction gear sets are in transmission connection with the transmission member.

[0018] As a further improvement of an embodiment of the present utility model, the transmission member and the drive shaft are arranged with a gap therebetween.

[0019] As a further improvement of an embodiment of the present utility model, a mixing chamber is defined in the mixing cylinder. Along the direction from top to bottom, the inner diameter of the mixing chamber first increases and then decreases. The mixing chamber includes a steam retention area, a stirring and mixing area, and a liquid pushing area arranged from top to bottom. The liquid inlet pipe communicates with the steam retention area, and the liquid outlet pipe communicates with the liquid pushing area.

[0020] The inner diameter of the mixing chamber first increases and then decreases. The relatively wide middle part can accommodate and adsorb more water, increasing the residence time of the powder and water in the relatively wide middle area, that is, increasing the mixing time and improving the dissolution effect of the powder. Description of the Drawings

[0021] Figure 1 is a perspective view of a beverage machine according to an embodiment of the present utility model.

[0022] Figure 2 is Figure 1 a perspective view of the mixer of the beverage machine in

[0023] Figure 3 is Figure 2 a cross-sectional view of the mixer in along line A-A.

[0024] Figure 4 is Figure 3 a perspective exploded view of the mixer in

[0025] Figure 5 is Figure 3 a view of the mixer in after removing the mixing cylinder and the transmission components.

[0026] Figure 6 is a cross-sectional view of the mixer of the beverage machine according to another embodiment of the present utility model.

[0027] Figure 7 isFigure 6 Exploded perspective view of the blender in

[0028] Figure 8 is a cross-sectional view of the blender of the beverage machine according to another embodiment of the present invention.

[0029] Figure 9 is Figure 8 Cross-sectional view of the blender along line B-B in

[0030] The repeated use of reference numerals in this specification and the drawings is intended to represent the same or similar features or elements of the present application. Detailed Description of the Invention

[0031] The present invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included within the protection scope of the present invention.

[0032] It should be understood that the terms indicating relative spatial positions used herein, such as "upper", "above", "lower", "below", etc., are for the purpose of facilitating description of the relationship between one unit or feature and another unit or feature as shown in the drawings. The terms indicating relative spatial positions may be intended to include different orientations of the device in use or operation other than the orientations shown in the drawings.

[0033] The beverage machine in the specific embodiment of the present invention, referring to Figures 1 to 5 As shown, the beverage machine includes a main body 10 and a blender 100 provided on the main body 10. The main body 10 has a liquid supply pipeline and an output pipeline. The blender 100 has a liquid inlet pipe 21 and a liquid outlet pipe 22. The liquid inlet pipe 21 is used to connect to the liquid supply pipeline, and the liquid outlet pipe 22 is used to connect to the output pipeline. The liquid supply pipeline can transport the liquid from the liquid supply source to the blender 100, and the beverage made by the blender 100 can be transported to the beverage outlet of the beverage machine through the output pipeline, and then transported from the beverage outlet to the user's container.

[0034] The blender 100 includes a mixing cylinder 20, blades 31 located inside the mixing cylinder 20, and a driving mechanism 40. The driving mechanism 40 includes a motor 401 and a driving shaft 45. The driving shaft 45 is connected to the blades 31. A first transmission structure and a second transmission structure are provided between the motor 401 and the driving shaft 45. The motor 401 drives the driving shaft 45 to rotate through the first transmission structure, and the motor 401 drives the driving shaft 45 to move axially through the second transmission structure.

[0035] The mixing cylinder 20 defines a mixing chamber 201 which is used to accommodate powder materials and liquid. The powder materials to be mixed can fall into the interior of the mixing chamber 201 from the opening above the mixing cylinder 20, and the water to be mixed can be conveyed into the interior of the mixing chamber 201 through a liquid supply pipeline communicating with the mixing chamber 201. The motor 401 drives the blade 31 to rotate through the drive shaft 45, thereby stirring the powder materials and the liquid in the mixing chamber 201 to achieve the mixing of the powder materials and the liquid.

[0036] Two transmission structures are provided between the motor 401 and the drive shaft 45. The two transmission structures form two different transmission paths, which can not only make the blade 31 rotate around the drive shaft 45, but also make the blade 31 move along the axial direction of the drive shaft 45 with the drive shaft 45. As a result, the area where the blade 31 contacts the mixing chamber 201 for stirring can be larger, the stirring can be more uniform, the powder-to-water ratio can be higher, the concentration of the prepared beverage can be higher, and the taste can be better. Herein, the powder-to-water ratio is the ratio of the powder materials to the water. When the powder-to-water ratio is higher, the concentration of the prepared beverage is high and the taste is good. In addition, when cleaning the mixing cylinder 20, the blade 31 can move along the axial direction of the drive shaft 45, and the cleaning of the mixing cylinder 20 is more thorough.

[0037] Among them, the second transmission structure includes a transmission component 43 and a guiding portion 44. The drive shaft 45 is connected to the transmission component 43, and the cooperation between the transmission component 43 and the guiding portion 44 drives the drive shaft 45 to move axially. The drive shaft 45 is respectively driven to rotate and move axially through the first transmission structure and the second transmission structure. The transmission component 43 drives the drive shaft 45 to move axially under the action of the guiding portion 44, and the axial movement frequency of the drive shaft 45 can be set more conveniently, so that while the blade 31 rotates at a high speed, it can also perform a low-speed undulating agitation along the axial direction, thereby driving the liquid to discharge quickly and improving the stirring efficiency.

[0038] In some embodiments, the motor 401 has an output shaft 410. The output shaft 410 is in transmission connection with the drive shaft 45, and the drive shaft 45 can move axially relative to the output shaft 410. The axis of the output shaft 410 is collinear or parallel with the axis of the drive shaft 45 along the vertical direction. The blade 31 rotates around the axis in the vertical direction for stirring, the stirring is more uniform, and the cleaning of the mixing cylinder 20 can also be more thorough. The axis of the output shaft 410 being parallel to the axis of the drive shaft 45 along the vertical direction means that the extending direction of the axis of the output shaft 410 and the extending direction of the axis of the drive shaft 45 are the same but not collinear.

[0039] Refer to Figure 3 and Figure 4, the first transmission structure includes the transmission connection between the output shaft 410 and the drive shaft 45, that is, the output shaft 410 of the motor 401 directly drives the drive shaft 45 to rotate. Among them, one of the output shaft 410 and the drive shaft 45 is set as a flat square structure, and the other is set with a flat square groove. The flat square structure extends into the flat square groove to realize the transmission connection between the output shaft 410 and the drive shaft 45. In this embodiment, the output shaft 410 is set as a flat square structure, and the drive shaft 45 is set with a flat square groove. In other feasible solutions, the output shaft 410 and the drive shaft 45 can also be connected by splines, square shafts, etc., to ensure that the blade 31 can rotate at a high speed, making the stirring more sufficient. Moreover, through the direct connection between the output shaft 410 of the motor 401 and the drive shaft 45, the structure is simple and the cost is low. The two-stage transmission of the output shaft 410 directly driving the drive shaft 45 can reduce the energy transmission loss and ensure that the drive shaft 45 maintains a high-speed rotation.

[0040] The second transmission structure includes a transmission box 50 and a transmission member 424 arranged in the transmission box 50. The motor 401 is in transmission connection with the transmission member 424; one of the transmission member 43 and the guiding portion 44 is arranged on the transmission member 424, and the other of the transmission member 43 and the guiding portion 44 is arranged in the transmission box 50. The drive shaft 45 moves axially through the transmission member 424 as the output end. The motor 401 can not only drive the drive shaft 45 to rotate, but also drive the drive shaft 45 to move axially. According to the cooperation of the transmission member 43 and the guiding portion 44, the frequency of the axial movement of the drive shaft 45 is set to ensure that the liquid is fully stirred in the mixing cylinder 20 without flying out of the mixing cylinder 20.

[0041] In some embodiments, the transmission member 43 is fixed circumferentially along the drive shaft 45 with the transmission member 424. The transmission member 43 includes a radially protruding guide pin 431. The guiding portion 44 is configured as an orbital groove extending circumferentially along the inner wall of the transmission box 50. The orbital groove has a drop in the axial direction of the drive shaft 45. The guide pin 431 rotates along the orbital groove, and the transmission member 43 moves axially within the range of the drop. The transmission member 43 rotates synchronously with the transmission member 424, and the guide pin 431 moves axially along the drive shaft 45 under the movement in the orbital groove. When the drive shaft 45 is vertically arranged, the transmission member 43 realizes lifting while rotating with the transmission member 424, which can make the second transmission structure more compact, occupy less space, and the transmission is more stable.

[0042] Among them, the transmission component 43 is configured as a turntable. A plurality of guide posts 425 are provided on the transmission member 424, and the plurality of guide posts 425 pass through the turntable to circumferentially fix the turntable relative to the transmission member 424. There is a clearance fit between the turntable and the guide posts 425, so that the turntable can move up and down along the guide posts 425. Protrusions 451 and pressing pieces 452 are axially spaced on the drive shaft 45. The transmission component 43 is located between the protrusion 451 and the pressing piece 452, and the protrusion 451 protrudes radially along the drive shaft 45. When the turntable rises, the turntable drives the drive shaft 45 to rise through the protrusion 451; when the turntable descends, the turntable drives the drive shaft 45 to descend through the pressing piece 452. By providing the pressing piece 452, after the drive shaft 45 passes through the planetary reduction gear set and is in transmission connection with the output shaft 410, the pressing piece 452 can be installed on the drive shaft 45 more conveniently, and at the same time, the transmission connection between the drive shaft 45 and the output shaft 410 is more reliable. Further, a card slot 453 is also provided on the drive shaft 45, and the pressing piece 452 is inserted into the card slot 453 along the radial direction of the drive shaft 45, which is not only convenient for installing the pressing piece 452, but also can ensure the fixing effect between the pressing piece 452 and the drive shaft 45.

[0043] Further, the second transmission structure includes a planetary reduction assembly disposed in the transmission case 50, and the planetary reduction assembly includes at least one set of planetary reduction gear sets. Among them, the planetary reduction gear set includes a sun gear, a ring gear, and planetary gears that respectively mesh with the sun gear and the ring gear. The diameter of the planetary gears is greater than the diameter of the sun gear; the sun gear in at least one set of planetary reduction gear sets is in transmission connection with the output shaft 410, and the planetary gears in at least one set of planetary reduction gear sets are in transmission connection with the transmission member 424. The planetary reduction assembly is used to realize the reduction transmission from the output shaft 41 to the transmission member 424, so that the drive shaft 45 can rise and fall at a lower frequency, preventing the liquid from surging in the mixing cylinder 20 and causing the liquid to fly out of the mixing cylinder 20.

[0044] In one implementation, at least one set of planetary reduction gear sets includes a first-stage planetary gear set 41 ， The first-stage planetary gear set 41 includes a first-stage sun gear 411, first-stage planetary gears 412, a first-stage planetary carrier 414, and a first-stage ring gear 413. The diameter of the first-stage planetary gears 412 is greater than the diameter of the first-stage sun gear 411. The first-stage sun gear 411 is fixed to the output shaft 410. The first-stage planetary gears 412 are connected to one side of the first-stage planetary carrier 414 and simultaneously mesh with the first-stage sun gear 411 and the first-stage ring gear 413. The first-stage ring gear 413 is disposed in the transmission case 50. The first-stage planetary carrier 414 is located on one side of the transmission member 424 and is in transmission connection with the transmission member 424. The transmission component 43 is disposed on the other side of the transmission member 424.

[0045] The first-stage sun gear 411 is directly connected to the output shaft 410 of the motor 401. Therefore, the rotational speed of the first-stage sun gear 411 is the same as that of the drive shaft 45. Then, the first-stage sun gear 411 drives the first-stage planet gear 412 to rotate. And while the first-stage planet gear 412 rotates on its own axis, it also revolves around the first-stage sun gear 411. Since the diameter of the first-stage planet gear 412 is larger than that of the first-stage sun gear 411, when the first-stage sun gear 411 makes one full rotation, the first-stage planet gear 412 cannot make one full rotation, that is, the rotational speed of the first-stage planet gear 412 revolving around the first-stage sun gear 411 is lower than the rotational speed of the first-stage sun gear 411 rotating on its own axis, thus achieving a speed reduction effect. Further, the first-stage planet gear 412 drives the first-stage planet carrier 414 to rotate, making the rotational speed of the first-stage planet carrier 414 the same as that of the first-stage planet gear 412, so that the rotational speed of the first-stage planet carrier 414 is also reduced.

[0046] Optionally, at least one set of planetary reduction gear sets further includes a second-stage planetary gear set 42. The second-stage planetary gear set 42 includes a second-stage sun gear 421, second-stage planet gears 422, a transmission member 424, and a second-stage ring gear 423. The diameter of the second-stage planet gears 422 is larger than that of the second-stage sun gear 421. The second-stage sun gear 421 is fixed to the other side of the first-stage planet carrier 414. The second-stage planet gears 422 are connected to one side of the transmission member 424 and mesh with both the second-stage sun gear 421 and the second-stage ring gear 423 at the same time. The second-stage ring gear 423 is disposed within the transmission case 50. The transmission component 43 is disposed on the other side of the transmission member 424. The transmission member 424 is configured as the second-stage planet carrier of the second-stage planetary gear set 42. The second-stage planet carrier, as the output end of the second-stage planetary gear set 42, cooperates with the transmission component 43.

[0047] Similarly for the second-stage planetary gear set 42, the second-stage sun gear 421 is directly connected to the first-stage planet carrier 414. Therefore, the rotational speed of the second-stage sun gear 421 is the same as that of the first-stage planet carrier 414. Then, the second-stage sun gear 421 drives the second-stage planet gears 422 to rotate. And while the second-stage planet gears 422 rotate on their own axes, they also revolve around the second-stage sun gear 421. Since the diameter of the second-stage planet gears 422 is larger than that of the second-stage sun gear 421, when the second-stage sun gear 421 makes one full rotation, the second-stage planet gears 422 cannot make one full rotation, that is, the rotational speed of the second-stage planet gears 422 revolving around the second-stage sun gear 421 is lower than the rotational speed of the second-stage sun gear 421 rotating on its own axis, thus achieving a further speed reduction effect. Further, the second-stage planet gears 422 drive the transmission member 424 to rotate, making the rotational speed of the transmission member 424 the same as that of the second-stage planet gears 422, so that the rotational speed of the transmission member 424 is further reduced.

[0048] Among them, the rotation speed of the first-stage central gear 411 is the same as that of the output shaft 410, and the rotation speed of the second-stage central gear 421 is the same as that of the first-stage planet carrier 414, so as to achieve the purpose of multi-stage deceleration. Specifically, the number of planetary gear sets to be set can be adjusted according to requirements, which can be only one set or multiple sets. The number of planetary gears can be two, three or more, as long as the transmission stability is ensured.

[0049] If the planetary reduction gear set is not set, when the blade 31 rotates one circle, one up-and-down movement is completed. However, the lifting speed of the blade 31 cannot be too fast. Therefore, by setting the planetary reduction gear set, the lifting frequency of the blade 31 is reduced, that is, when the blade 31 rotates one circle, the blade 31 cannot complete one up-and-down movement. Then, the blade 31 itself will have two speeds, one is the speed of its own rotation, and the other is the speed of up-and-down movement. In some embodiments, the transmission member 424 is arranged with a gap from the drive shaft 45. By arranging the transmission member 424 with a gap from the drive shaft 45, the influence of the transmission member 424 on the self-rotation of the drive shaft 45 is reduced as much as possible, and the friction between the transmission member 424 and the drive shaft 45 is reduced, so as to ensure that on the basis of the self-rotation speed of the blade 31 that meets the requirements, the blade 31 can also be lifted and lowered at a reasonable speed.

[0050] The transmission case 50 includes a case base 51 and an upper cover 52. The case base 51 and the upper cover 52 are connected by fasteners, and the planetary reduction assembly is arranged in the space jointly defined by the base and the upper cover 52. On the end face of the case base 51 adjacent to the second-stage gear ring 423, there is a lower track surface 511, and on the upper cover 52, there is an upper track surface 521. Both the upper track surface 521 and the lower track surface 511 are undulating along the axial direction of the drive shaft 45. The upper track surface 521 and the lower track surface 511 jointly define a track groove with an axial drop. The guide pin 431 rotates along the track groove, so as to drive the transmission component 43 to lift while rotating. The track groove is arranged on the end face adjacent to the second-stage gear ring 423, and can have a larger diameter range. The guide pin 431 moves more smoothly in the track groove, and the undulating period of the track groove can be set flexibly, so that the transmission component 43 can achieve different lifting frequencies.

[0051] In addition, both the first-stage gear ring 413 and the second-stage gear ring 423 are fixed in the case base 51. In this embodiment, the first-stage gear ring 413 and the second-stage gear ring 423 are integrally provided with the case base 51, which is convenient for manufacturing and assembling. In addition, the track groove is arranged on the end face adjacent to the second-stage gear ring 423, which can make the rotation and lifting of the transmission component 43 more stable.

[0052] Refer to Figure 6 and Figure 7, in some other embodiments, the specific setting of the planetary reduction assembly is the same as that in the above embodiments and will not be elaborated here. The difference is that the transmission component 43a is axially fixed to the drive shaft 45, and the guiding portion 44a is configured as an axially extending track surface provided on the end surface of the transmission member 424. The track surface has a drop in the axial direction of the drive shaft 45, and the transmission component 43a generates an axial movement within the range of the drop as the transmission member 424 rotates. The rotation of the transmission member 424 drives the transmission component 43a to move axially. When the drive shaft 45 is vertically arranged, the transmission component 43a realizes lifting under the drive of the track surface, which can make the second transmission structure more compact, occupy less radial space, and have a more stable transmission.

[0053] Among them, a limiting groove 53 is provided on the transmission case 50. The limiting groove 53 extends along the axial direction of the drive shaft 45. The transmission component 43a includes a limiting pin 433, and the limiting pin 433 extends into the limiting groove 53. The limiting groove 53 can limit the rotation of the transmission component 43a and define the lifting path of the transmission component 43a, ensuring that the transmission component 43a drives the drive shaft 45 to lift more reliably. The limiting groove 53 can be jointly defined by a groove provided on the upper cover 52 of the transmission case 50 and a groove on the case base 51, which can reduce the depth of the grooves on each component and thus will not affect the overall structural strength.

[0054] A snap ring 456 is provided on the drive shaft 45. The snap ring 456 is fixed to the drive shaft 45. The transmission component 43a is located on the side of the snap ring 456 away from the blade 31, that is, the transmission component 43a is located below the snap ring 456. The snap ring 456 defines the relative position between the transmission component 43a and the drive shaft 45, ensuring that the transmission component 43a can drive the drive shaft 45 to rise axially. An elastic element 457 is provided between the transmission component 43a and the transmission case 50, and the elastic element 457 presses the transmission component 43a towards the transmission member 424. The setting of the elastic element 457 can ensure that the transmission component 43a remains in contact with the track surface and can reliably descend after the transmission component 43a drives the drive shaft 45 to rise.

[0055] A stepped portion 455 is also provided on the drive shaft 45. The stepped portion 455 and the snap ring 456 are axially spaced apart, and the transmission component 43a is located between the stepped portion 455 and the snap ring 456. The setting of the stepped portion 455 can facilitate the assembly of the transmission component 43a and the drive shaft 45 and ensure the axial positioning of the transmission component 43a.

[0056] The transmission component 43a can be configured as a straight shape. A spherical protrusion is provided at one end of the transmission component 43a facing the track surface, and the spherical protrusion contacts the track surface. The setting of the spherical protrusion can reduce the contact area between the transmission component 43a and the track surface, reduce friction, and make the rising and falling of the transmission component 43a more reliable.

[0057] In the prior art, all mixers 100 are structured to perform stirring horizontally and powder feeding vertically downward, which is prone to problems such as uneven stirring and insufficient cleaning. Since the stirring cavity and the powder feeding cavity are different cavities, with the powder feeding cavity located above and the stirring cavity located below, the dissolved drink will be transported to the output pipeline through the pipeline of the stirring cavity. Therefore, there is likely to be residual undissolved powder in the stirring cavity, which greatly affects the taste of the next cup for the customer. Moreover, long-term accumulation is likely to breed bacteria, which adhere to the inner wall of the mixer 100 and are not easy to clean.

[0058] Referring to Figure 8 and Figure 9 , a mixing chamber 201 is defined within the mixing cylinder 20. Along the direction from top to bottom, the inner diameter of the mixing chamber 201 first increases and then decreases. In some embodiments, the external shape of the mixing cylinder 20 is similar to the shape of a wine glass. By utilizing the mutual force generated by the principle of van der Waals force and viscous resistance, the mixing time of the liquid within the mixing cylinder 20 can be increased, achieving a better stirring effect and a higher powder-to-water ratio, and enhancing the taste of the drink. The mixing cylinder 20 is fixed together by two parts, for example, by ultrasonic welding, which facilitates the manufacture of the mixing cylinder 20.

[0059] The mixing chamber 201 includes a steam retention zone 202, a stirring and mixing zone 203, and a liquid pushing zone 204 arranged from top to bottom, as shown in the area within the dashed box in Figure 9 . The liquid inlet pipe 21 communicates with the steam retention zone 202, and the liquid outlet pipe 22 communicates with the liquid pushing zone 204. The powder and water can be mixed in the stirring and mixing zone 203, and the steam can be retained in the steam retention zone 202. The fully mixed liquid drink can flow out from the liquid pushing zone 204 to the liquid outlet pipe 22.

[0060] Optionally, the blade 31 extends into the junction of the liquid pushing zone 204 and the stirring and mixing zone 203. The inner diameter of the steam retention zone 202 gradually increases from top to bottom, and the inner diameter of the stirring and mixing zone 203 includes a trend of gradually increasing from bottom to top.

[0061] Among them, the stirring and mixing zone 203 has a relatively wider middle part adjacent to the steam retention zone 202, which can accommodate and adsorb more water, increasing the residence time of the powder and water in the relatively wider middle area, that is, increasing the mixing time and improving the dissolution effect of the powder. The steam retention zone 202 is set in an inverted slope shape or gradually narrowing from bottom to top. Even when there is more water in the stirring and mixing zone 203, due to the limitation of the inner wall surface of the steam retention zone 202, too much water will not overflow from the mixing cylinder 20. At the same time, it ensures that the mixed drink smoothly flows downward into the liquid pushing zone 204. The liquid pushing zone 204 is provided with a blade 31, which can further stir and mix the powder and water, thereby improving the mixing effect.

[0062] Meanwhile, the blade 31 is disposed at the junction of the stirring and mixing zone 203 and the liquid pushing zone 204, such that the gap between the blade 31 and the inner wall of the mixing cylinder 20 is relatively small, which can also increase the mixing time of the powder and water above the blade 31 and improve the mixing effect. However, a relatively small gap may result in a slow flow rate of the beverage, which may cause the water in the mixing cylinder 20 to overflow. In this case, the inverted slope shape of the steam retention zone 202 can prevent such a situation from occurring.

[0063] Among them, the inner diameter of the stirring and mixing zone 203 also has a tendency to gradually decrease from bottom to top, that is, the stirring and mixing zone 203 has a structure that is relatively narrow both at the top and bottom and wider in the middle. The powder and water can stay and mix in the wider part in the middle, further improving the dissolution effect of the powder. The structure of the wider part in the middle of the stirring and mixing zone 203 can be constructed as an arc shape, and a smoother structure is beneficial to the flow of the liquid, ensuring the mixing effect of the powder and water.

[0064] Furthermore, the mixing chamber 201 further includes an exhaust zone 205 located above the steam retention zone 202, and the inner diameter of the exhaust zone 205 shows a tendency to increase from bottom to top. As Figure 9 shown by the arrow, the steam generated by the hot water is above the stirring and mixing zone 203. Due to the design of the inverted slope shape of the steam retention zone 202, the liquid will not surge upward, enabling the steam to stay in a certain area, and then under the suction force in the air duct connecting to the exhaust zone 205, the generated steam is discharged in the direction of the arrow.

[0065] In the present utility model, by providing two transmission structures between the motor 401 and the drive shaft 45, the blade 31 can not only rotate around the drive shaft 45 but also move along the axial direction of the drive shaft 45 with the drive shaft 45, so that the area that can come into contact with the blade 31 for stirring is larger, the stirring is more uniform, the powder-to-water ratio can be made higher, the concentration of the produced beverage is higher, and the taste is better. Similarly, when cleaning the mixing cylinder 20, the blade 31 can move along the axial direction of the drive shaft 45, and the cleaning of the mixing cylinder 20 is more thorough. The inner diameter of the mixing chamber 201 shows a tendency to increase first and then decrease. The wider part in the middle can accommodate and adsorb more water, increasing the residence time of the powder and water in the wider area in the middle, that is, increasing the mixing time and improving the dissolution and mixing effect of the powder.

[0066] It should be understood that although this specification is described according to the embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0067] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent implementation modes or changes made without departing from the technical spirit of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A beverage machine, characterized in that, Comprising: A main body having a liquid supply pipeline and an output pipeline; A mixer disposed in the main body, the mixer having a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe being used to communicate with the liquid supply pipeline, and the liquid outlet pipe being used to communicate with the output pipeline; The mixer includes a mixing cylinder, blades located inside the mixing cylinder, and a driving mechanism. The driving mechanism includes a motor and a driving shaft. The driving shaft is connected to the blades. A first transmission structure and a second transmission structure are provided between the motor and the driving shaft. The motor drives the driving shaft to rotate through the first transmission structure, and the motor drives the driving shaft to move axially through the second transmission structure; The second transmission structure includes a transmission component and a guiding portion. The driving shaft is connected to the transmission component, and the cooperation between the transmission component and the guiding portion drives the driving shaft to move axially.

2. The beverage machine according to claim 1, wherein, The motor has an output shaft that is in transmission connection with the driving shaft. The driving shaft can move axially relative to the output shaft, and the axis of the output shaft is collinear or parallel with the axis of the driving shaft along the vertical direction.

3. The beverage machine according to claim 1, wherein The second transmission structure includes a transmission box and transmission parts disposed inside the transmission box. The motor is in transmission connection with the transmission parts to drive the transmission component; one of the transmission component and the guiding portion is disposed on the transmission parts, and the other of the transmission component and the guiding portion is disposed inside the transmission box.

4. The beverage machine according to claim 3, characterized in that, The transmission component is fixed circumferentially along the driving shaft. The transmission component includes a radially protruding guide pin. The guiding portion is configured as an orbital groove that extends circumferentially along the inner wall of the transmission box. The orbital groove has a drop in the axial direction of the driving shaft. The guide pin rotates along the orbital groove, and the transmission component moves axially within the range of the drop.

5. The beverage machine according to claim 4, wherein, Protrusions and pressing pieces are arranged at intervals along the axial direction on the driving shaft. The transmission component is located between the protrusions and the pressing pieces, and the protrusions protrude radially along the driving shaft.

6. The beverage machine according to claim 3, characterized in that, The transmission component is fixed axially along the driving shaft. The guiding portion is configured as an orbital surface that extends circumferentially. The orbital surface is disposed on the end face of the transmission parts. The orbital surface has a drop in the axial direction of the driving shaft. The transmission component moves axially within the range of the drop as the transmission parts rotate.

7. The beverage machine according to claim 6, wherein A limiting groove is provided on the transmission box. The limiting groove extends along the axial direction of the driving shaft. The transmission component includes a limiting pin that extends into the limiting groove; a snap ring is provided on the driving shaft, and the snap ring is fixed on the driving shaft. The transmission component is located on the side of the snap ring away from the blades; an elastic element is provided between the transmission component and the transmission box, and the elastic element presses the transmission component towards the transmission parts.

8. The beverage machine according to any one of claims 3-7, characterized in that The second transmission structure includes a planetary reduction assembly disposed in the transmission case. The planetary reduction assembly includes at least one set of planetary reduction gear sets. Each planetary reduction gear set includes a sun gear, a ring gear, and planet gears that mesh with the sun gear and the ring gear respectively. The diameter of the planet gears is greater than the diameter of the sun gear. The motor has an output shaft. The sun gear in at least one set of the planetary reduction gear sets is in transmission connection with the output shaft, and the planet gears in at least one set of the planetary reduction gear sets are in transmission connection with the transmission member.

9. The beverage machine according to claim 8, wherein, The transmission member is arranged with a clearance from the drive shaft.

10. The beverage machine according to any one of claims 1 to 7, characterized in that, A mixing chamber is defined in the mixing cylinder. Along the direction from top to bottom, the inner diameter of the mixing chamber first increases and then decreases. The mixing chamber includes a steam retention zone, a stirring and mixing zone, and a liquid pushing zone arranged from top to bottom. The liquid inlet pipe communicates with the steam retention zone, and the liquid outlet pipe communicates with the liquid pushing zone.

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