Milk foam output mechanism

Abstract

The utility model provides a milk foam output mechanism, which comprises a milk pipe, which is provided with an input end and an output end which are oppositely arranged, the input end is connected with an emulsifying device, the emulsifying device is used for generating milk foam formed by mixing and blending air and milk, and the milk pipe is used as a conveying pipeline for the milk foam to flow out; the outer pipe is arranged on the outer side of the milk pipe in a sleeving mode and provided with a first end and a second end which are opposite, the milk pipe extends from the first end to the second end in the outer pipe, and a gap is formed between the outer pipe and the milk pipe; the supporting part is arranged on the milk pipe, the supporting part is fixed relative to the second end, and the output port of the milk pipe is isolated from the gap fluid through the supporting part. Milk foam output by the emulsifying device is directly output through the milk pipe, the milk foam does not enter the outer pipe, and the contact between the milk foam and external air is reduced as much as possible before the milk foam reaches the outlet, so that the influence of the air in the outer pipe on the milk foam can be reduced, and the quality of the milk foam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food or beverage preparation, in particular to a milk foam output mechanism. Background Art

[0002] As people's living standards improve, beverage preparation machines are becoming more and more popular. For example, coffee machines can provide users with coffee quickly and conveniently, and have become a common product in offices, entertainment venues and family life. With the rapid development of the field of fully automatic coffee machines, the functions are becoming more and more powerful. As we all know, at present, in machines for preparing coffee at home and professionally, a device for frothing emulsion is set, which mixes emulsion and air to form milk foam, and the formed milk foam is discharged from an outlet pipe.

[0003] However, the outlet pipe structure of the current beverage preparation machine causes the quality of the milk foam to change during the process of formation and output, that is, the quality of the milk foam discharged by the outlet pipe is not as good as the milk foam formed by the emulsifying device, resulting in the milk foam quality of the beverage preparation machine failing to meet user requirements. Utility Model Content

[0004] The utility model aims to provide a milk froth output mechanism which can improve the quality of output milk froth.

[0005] In order to achieve one of the above-mentioned purposes of the utility model, the utility model provides a milk froth output mechanism, comprising: a milk tube having an input end and an output end arranged opposite to each other, wherein the input end is connected to an emulsifying device;

[0006] A milk tube having an input end and an output end arranged opposite to each other, wherein the input end is connected to an emulsifying device, wherein the emulsifying device is used to generate milk foam formed by mixing air and emulsion, and the milk tube serves as a conveying conduit for the milk foam to flow out;

[0007] an outer tube, sleeved on the outer side of the milk tube, the outer tube having a first end and a second end opposite to each other, the milk tube extending from the first end to the second end in the outer tube, with a gap between the outer tube and the milk tube; and

[0008] A support portion is provided on the milk tube, the support portion is fixed relative to the second end, and the output port of the milk tube is isolated from the gap fluid by the support portion.

[0009] Compared with the prior art, the utility model has the beneficial effects that the milk foam output by the emulsifying device is directly output through the milk tube, the milk foam will not enter the outer tube, and the milk foam will minimize contact with the external air before reaching the outlet, that is, a separate milk tube is provided to reduce the entry of air, thereby reducing the influence of the air in the outer tube on the milk foam, thereby improving the quality of the milk foam, and the milk foam output into the cup can meet the requirements.

[0010] As a further improvement of an embodiment of the utility model, the milk tube includes a pipe joint, the support part is arranged on the pipe joint, the pipe joint is provided with a joint channel, the joint channel is isolated from the gap fluid by the support part, and the milk froth output mechanism also includes an outlet sleeve, the outlet sleeve is connected to the second end, and the outlet sleeve fixes the support part to the second end.

[0011] As a further improvement of an embodiment of the utility model, it also includes an inner tube, the first end is sleeved on the outside of the inner tube, the milk tube extends from the inner tube into the outer tube, the milk tube includes a flexible tube, and the outer tube can be extended and retracted along the axial direction of the inner tube.

[0012] The outer tube can drive the milk tube to extend and retract, and the height of the milk foam output mechanism can be freely adjusted according to cups of different heights, thereby avoiding or reducing the phenomenon that the milk foam hits the bottom of the cup to form a large milk bubble.

[0013] As a further improvement of one embodiment of the utility model, the outlet sleeve includes a connecting portion and an abutting portion, the connecting portion is detachably connected to the second end, the supporting portion is constructed as an edge protruding radially along the pipe joint, and the edge is defined between the end of the second end and the abutting portion.

[0014] As a further improvement of an embodiment of the utility model, it also includes a nozzle sleeve, the pipe joint and the nozzle sleeve are sealingly connected, and the outlet of the nozzle sleeve is connected to the joint channel; the outlet sleeve is provided with a mounting hole, and the outlet of the nozzle sleeve is exposed from the mounting hole; the supporting portion is constructed as an edge protruding radially along the pipe joint, the outlet sleeve includes an abutting portion, the nozzle sleeve is provided with a step portion, the abutting portion abuts against the step portion, the nozzle sleeve abuts against the edge, and the edge abuts against the end of the second end.

[0015] As a further improvement of an embodiment of the utility model, the outlet sleeve is provided with a mounting hole, the pipe joint is inserted into the mounting hole, and the outlet of the joint channel is exposed from the mounting hole.

[0016] As a further improvement of an embodiment of the utility model, the outlet sleeve is provided with an output cavity and an outlet channel connected to the output cavity, the pipe joint extends into the output cavity, and the joint channel is connected to the outlet channel through the output cavity.

[0017] As a further improvement of one embodiment of the utility model, a damping structure is arranged between the inner tube and the outer tube, and the damping structure limits the movement of the outer tube relative to the inner tube under the action of its own gravity; the first end of the outer tube is connected to a fixing sleeve, and the outer tube is slidingly connected to the inner tube through the fixing sleeve; a stopper is connected to the inner tube, and the stopper is arranged between the damping structure and the fixing sleeve, and the stopper abuts against the fixing sleeve to limit the extreme position of the extension of the outer tube.

[0018] As a further improvement of an embodiment of the utility model, a damping structure is arranged between the inner tube and the outer tube, and the damping structure limits the movement of the outer tube relative to the inner tube under the action of its own gravity; the damping structure includes a spring sheet, one end of which is connected to the inner tube, and the other end of the spring sheet abuts against the inner wall of the outer tube, and the damping structure also includes a connecting ring, the spring sheet includes multiple spring sheets, and the multiple spring sheets are distributed on both sides of the connecting ring in the axial direction and arranged at intervals along the circumferential direction.

[0019] As a further improvement of one embodiment of the utility model, an elastic arm is provided on the inner tube, the connecting ring is connected to the elastic arm from the free end of the elastic arm, the connecting ring is provided with an opening, the free end of the elastic arm is provided with a fixing block, the fixing block is provided with a guide surface, the connecting ring is guided by the guide surface along the axial direction of the inner tube so that the fixing block is stuck in the opening.

[0020] As a further improvement of an embodiment of the utility model, the milk tube includes a delivery tube and a pipe joint connected to the delivery tube, the pipe joint is provided with a joint channel, and the diameter of the joint channel is less than or equal to the diameter of the delivery tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a milk froth output mechanism according to one embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of a milk froth output mechanism according to another embodiment of the present invention, wherein the outer tube is in an extended state.

[0023] Figure 3 yes Figure 2 Schematic diagram of a three-dimensional exploded view of the milk froth output mechanism.

[0024] Figure 4 yes Figure 2 Schematic diagram showing that the outer tube of the milk froth discharge mechanism is in a contracted state.

[0025] Figure 5 yes Figure 4 A schematic cross-sectional view of part a of the milk froth output mechanism.

[0026] Figure 6 It is a schematic diagram of a milk froth output mechanism according to another embodiment of the present invention, wherein the outer tube is in an extended state.

[0027] Figure 7 yes Figure 6 Schematic diagram of a three-dimensional exploded view of the milk froth output mechanism.

[0028] Figure 8 yes Figure 6 Schematic diagram showing that the outer tube of the milk froth discharge mechanism is in a contracted state.

[0029] Fig. 9 yes Figure 8 A schematic cross-sectional view of part b of the milk froth output mechanism.

[0030] Fig.10 It is a schematic diagram of a milk froth output mechanism according to another embodiment of the present invention, wherein the outer tube is in an extended state.

[0031] Fig.11 yes Fig.10 Schematic diagram of a three-dimensional exploded view of the milk froth output mechanism.

[0032] Fig.12 yes Fig.11 A schematic cross-sectional view of part c of the milk froth output mechanism.

[0033] Fig.13 yes Fig.11 Schematic diagram showing that the outer tube of the milk froth discharge mechanism is in a contracted state.

[0034] Fig.14 yes Fig.13 Schematic cross-sectional view of part d of the milk froth output mechanism.

[0035] Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the present application. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0037] It should be understood that the terms used herein, such as "upper", "above", "lower", "below", etc., indicating spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. The terms "first", "second", and "third" may be used interchangeably to distinguish one component from another, and these terms are not intended to indicate the position or importance of each component.

[0038] The milk froth output mechanism in the specific implementation mode of the present invention is described by taking the milk froth output mechanism connected to a beverage preparation machine as an example. Figure 1 As shown, in one embodiment, the milk froth output mechanism 100 includes a milk tube 20, an outer tube 30 sleeved on the outer side of the milk tube 20, and a support portion 45. The milk tube 20 has an input end 21 and an output end 22 arranged opposite to each other, and the input end 21 is directly connected to the emulsifying device. The emulsifying device is used to generate milk froth formed by mixing air and emulsion, and the milk tube 20 serves as a conveying pipe for the milk froth to flow out. The emulsifying device can be an independent device for generating milk froth, or a module or mechanism for generating milk froth integrated in a beverage preparation machine. The outer tube 30 has a first end 31 and a second end 32 opposite to each other, and the milk tube 20 extends from the first end 31 to the second end 32 in the outer tube 30, and there is a gap between the outer tube 30 and the milk tube 20. The support portion 45 is arranged on the milk tube 20, and the support portion 45 is fixed relative to the second end 32, and the output port of the milk tube 20 is isolated from the gap fluid by the support portion 45.

[0039] The milk froth outputted by the emulsifying device is directly outputted through the milk pipe 20, and the milk froth will not enter the outer pipe 30. The milk froth will minimize contact with the external air before reaching the outlet, that is, the milk pipe 20 is separately provided to reduce the entry of air, thereby reducing the influence of the air in the outer pipe 30 on the milk froth, thereby improving the quality of the milk froth, and the milk froth outputted into the cup can meet the requirements.

[0040] The milk pipe 20 includes a delivery pipe 23 and a pipe joint 24. The support portion 45 is arranged on the pipe joint 24. The pipe joint 24 is provided with a joint channel 241 and a joint portion 242. The joint channel 241 is isolated from the gap fluid by the support portion 45. The joint portion 242 is sealed and connected to the delivery pipe 23. The milk froth output mechanism 100 also includes an outlet sleeve 60. The outlet sleeve 60 is connected to the second end 32. The outlet sleeve 60 fixes the support portion 45 to the second end 32. The outlet sleeve 60 is provided to facilitate the installation and removal of the pipe joint 24. The outlet sleeve 60 is connected to the outer tube 30 to fix the pipe joint 24. The delivery pipe 23 can be a hard pipe made of a hard material, such as a metal pipe, a glass pipe, a ceramic pipe, and a food contact grade plastic pipe. In the case where the material of the delivery pipe 23 is a hard material, a sealing ring can be directly provided between the delivery pipe 23 and the joint portion 242 to achieve a sealed connection between the two. The delivery pipe 23 can also be a flexible pipe made of a soft material such as silicone or rubber. In addition, the delivery pipe 23 and the pipe joint 24 can be of an integral structure, which is convenient for manufacturing and can be quickly assembled with the outer pipe 30 .

[0041] The outlet sleeve 60 includes a connecting portion 61 and an abutting portion 62, the connecting portion 61 is detachably connected to the second end 32, and the supporting portion 45 is configured as an edge protruding along the radial direction of the pipe joint 24, and the edge is defined between the end of the second end 32 and the abutting portion 62. The outlet sleeve 60 is detachably connected to the outer tube 30, and the gap fluid between the joint channel 241 and the outer tube 30 can be isolated by the supporting portion 45. In particular, the outlet sleeve 60 and the second end 32 of the outer tube 30 are screwed together by threads, and the supporting portion 45 is clamped between the outlet sleeve 60 and the outer tube 30, so that the supporting portion 45 and the outer tube 30 are firmly fixed.

[0042] In this embodiment, the outlet sleeve 60 is provided with a mounting hole 63, the pipe joint 24 is inserted into the mounting hole 63, and the outlet of the joint channel 241 is exposed from the mounting hole 63. The outlet of the joint channel 241 forms the milk froth outlet of the milk froth output mechanism 100, which can achieve that the milk froth outlet directly reaches the bottom of the cup or the surface of the liquid in the cup, reduces the entry of air, and thus obtains higher quality milk froth.

[0043] Due to the different heights of cups, the milk foam delivery mechanism can only be designed according to the cup with the highest height. When the milk foam is delivered to a cup with a lower height, it will hit the bottom of the cup or the surface of the liquid in the cup, resulting in large bubbles, which will affect the quality of the milk foam. Figures 2 to 5As shown, in another embodiment, in order to freely adapt to cups of various heights, the milk froth output mechanism 200 further includes an inner tube 50, the first end 31 is sleeved on the outer side of the inner tube 50, the milk tube 20 extends from the inner tube 50 into the outer tube 30, the milk tube 20 includes a delivery tube 23, the delivery tube 23 is configured as a flexible tube, and the outer tube 30 can be extended and retracted along the axial direction of the inner tube 50. The outer tube 30 can drive the delivery tube 23 to be extended and retracted, and the height of the milk froth output mechanism can be freely adjusted according to cups of different heights. The pipe joint 24 connected to the delivery tube 23 is fixed relative to the outer tube 30. When the outer tube 30 is adjusted to any height, the outlet of the joint channel 241 is at the second end 32 of the outer tube 30, and the outlet of the joint channel 241 will not be too high from the bottom of the cup or the surface of the liquid in the cup, thereby avoiding or reducing the phenomenon that the milk froth hits the bottom of the cup or the surface of the liquid in the cup to form large milk bubbles.

[0044] The material of the delivery tube 23 is silicone or rubber, and the milk tube 20 also includes a pipe joint 24a, such as a pagoda joint. The pipe joint 24a is provided with a joint channel 241 and a joint portion 242, the joint channel 241 is isolated from the gap fluid by a support portion 45, and the joint portion 242 is sealed and connected with the delivery tube 23. In the case where the material of the delivery tube 23 is a soft rubber material such as silicone or rubber, the delivery tube 23 can achieve a sealed connection between the two by self-deformation and interference connection with the joint portion 242. The support portion 45 is provided on the pipe joint 24a, and the delivery tube 23 and the pipe joint 24a can be separately provided, and the delivery tube 23 is inserted on the pipe joint 24a, and the milk foam output from the delivery tube 23 can be directly discharged from the joint channel 241 on the pipe joint 24a.

[0045] Furthermore, the milk froth output mechanism 100 further includes an outlet sleeve 60a, which is connected to the second end 32 and fixes the support portion 45 to the second end 32. The outlet sleeve 60a can facilitate installation and removal of the support portion 45, and the outlet sleeve 60a can be connected to the outer tube 30 to fix the support portion 45.

[0046] The outlet sleeve 60a includes a connecting portion 61 and an abutting portion 62, wherein the connecting portion 61 is detachably connected to the second end 32, and the supporting portion 45 is configured as an edge protruding along the radial direction of the pipe joint 24a, and the edge is defined between the end of the second end 32 and the abutting portion 62. The outlet sleeve 60a is detachably connected to the outer tube 30, and the gap fluid between the joint channel 241 and the outer tube 30 can be isolated by the supporting portion 45. In particular, the outlet sleeve 60a is screwed to the second end 32 of the outer tube 30 by screwing, and the supporting portion 45 is clamped between the outlet sleeve 60a and the outer tube 30, so that the supporting portion 45 is firmly fixed to the outer tube 30. When the outer tube 30 is extended or retracted, the supporting portion 45 moves together with the outer tube 30, thereby ensuring reliable milk foam output.

[0047] In this embodiment, the outlet sleeve 60a is provided with a mounting hole 63, the support portion 45 is inserted into the mounting hole 63, and the outlet of the joint channel 241 is exposed from the mounting hole 63. The outlet of the joint channel 241 forms the milk froth outlet of the milk froth output mechanism 200, which can achieve that the milk froth outlet directly reaches the bottom of the cup or the surface of the liquid in the cup, reduces the entry of air, and thus obtains higher quality milk froth.

[0048] In order to achieve that the outer tube 30 can be manually adjusted to hover at any height within a preset range without automatically sliding down, the milk froth output mechanism further includes a damping structure 70 between the inner tube 50 and the outer tube 30, and the damping structure 70 limits the outer tube 30 from moving relative to the inner tube 50 under the action of its own gravity. The first end 31 of the outer tube 30 is connected to the fixing sleeve 35, and the outer tube 30 is slidably connected to the inner tube 50 through the fixing sleeve 35. The inner tube 50 is connected to a stopper 51, and the stopper 51 is arranged between the damping structure 70 and the fixing sleeve 35. The stopper 51 abuts against the fixing sleeve 35 to limit the limit position of the extension of the outer tube 30. The fixing sleeve 35 can facilitate the connection between the inner tube 50 and the outer tube 30. The outer tube 30 and the fixing sleeve 35 can be connected by threads, and the structure and connection of the outer tube 30 are simpler. The fixing sleeve 35 can also provide a damping effect between the inner tube 50 and the outer tube 30. In addition, the stopper 51 cooperates with the fixing sleeve 35 on the outer tube 30 to prevent the outer tube 30 from being separated from the inner tube 50 when sliding.

[0049] The damping structure 70 includes an O-type damping ring 71, which is sleeved on the outside of the inner tube 50. The outer tube 30 realizes the telescopic function by sliding along the axial direction of the inner tube 50 through the O-type damping ring 71. The O-type damping ring 71 is sleeved on the inner tube 50 and has an interference fit with the outer tube 30. Since the O-type damping ring 71 is elastic, it will rub against the outer tube 30, and the friction force provides a damping effect. The stopper 51 can be a wire ring sleeved on the outside of the inner tube 50. The wire ring is a structure with an opening, which is convenient for the deformation and installation of the wire ring. The wire ring cooperates with the fixed sleeve 35 on the outer tube 30 to prevent the outer tube 30 from detaching from the inner tube 50 when sliding. During installation, the fixed sleeve 35 can be sleeved on the outside of the inner tube 50 first, and then the wire ring can be installed. Of course, the fixing sleeve 35 can also be made into two spliced ​​structures, so that the wire ring can be installed first. At the same time, the spliced ​​structure allows the limiting structure to be directly formed integrally on the outer surface of the inner tube 50 without the need for additionally setting up a wire ring.

[0050] Reference Figures 6 to 9As shown, in another embodiment, the milk froth output mechanism 300 includes a milk tube 20, an outer tube 30 sleeved on the outer side of the milk tube 20, and a support portion 45. The milk tube 20 has an input end 21 and an output end 22 arranged opposite to each other, and the input end 21 is directly connected to the emulsifying device. The emulsifying device is used to generate milk froth formed by mixing air and emulsion, and the milk tube serves as a conveying pipe for the milk froth to flow out. The emulsifying device can be an independent device for generating milk froth, or a module or mechanism for generating milk froth integrated in a beverage preparation machine. The outer tube 30 has a first end 31 and a second end 32 opposite to each other, and the milk tube 20 extends from the first end 31 to the second end 32 in the outer tube 30, and there is a gap between the outer tube 30 and the milk tube 20. The support portion 45 is arranged on the milk tube 20, and the support portion 45 is fixed relative to the second end 32, and the output port of the milk tube 20 is isolated from the gap fluid by the support portion 45. In this embodiment, the milk froth is also directly output through the milk tube 20, and its effect is the same as that of the above-mentioned embodiment.

[0051] The milk froth output mechanism 300 further includes an inner tube 50, a first end 31 is sleeved on the outer side of the inner tube 50, a milk tube 20 extends from the inner tube 50 into the outer tube 30, the milk tube 20 includes a delivery tube 23, the delivery tube 23 is configured as a flexible tube, and the outer tube 30 can be extended and retracted along the axial direction of the inner tube 50. The second end 32 of the outer tube 30 is connected with an outlet sleeve 60b, and the outlet sleeve 60b fixes the support part 45 to the second end 32 of the outer tube 30. The structure, the specific structure of the extension and retraction, and the damping structure 70 of the milk tube 20 are the same as those in the above-mentioned embodiment, and will not be described in detail here. Different from the above-mentioned embodiment, the outlet sleeve 60b is provided with an output cavity 65 and an outlet channel 66 connected to the output cavity 65, the pipe joint 24b extends into the output cavity 65, and the joint channel 241 is connected to the outlet channel 66 through the output cavity 65. The milk foam output from the joint channel 241 is buffered by the output chamber 65 and then discharged from the outlet channel 66, so that the milk foam outlet can directly reach the bottom of the cup or the surface of the liquid in the cup, thereby avoiding or reducing the phenomenon of the milk foam hitting the bottom of the cup or the surface of the liquid in the cup to form large milk bubbles.

[0052] In addition, a plurality of openings 246 are provided at one end of the pipe joint 24b away from the milk pipe, and the plurality of openings 246 are arranged at intervals along the circumference of the joint channel 241. The plurality of circumferentially arranged openings 246 facilitate the discharge of milk foam and can break the bubbles mixed in the milk foam to improve the quality of the output milk foam.

[0053] Reference Figure 10 to Figure 14As shown, in another embodiment, the milk froth output mechanism 400 includes a milk tube 20, an outer tube 30 sleeved on the outer side of the milk tube 20, and a support portion 45. The milk tube 20 has an input end 21 and an output end 22 arranged opposite to each other, and the input end 21 is directly connected to the emulsifying device. The emulsifying device is used to generate milk froth formed by mixing air and emulsion, and the milk tube serves as a conveying pipe for the milk froth to flow out. The emulsifying device can be an independent module or device for generating milk froth, or a mechanism for generating milk froth integrated in a beverage preparation machine. The outer tube 30 has a first end 31 and a second end 32 opposite to each other, and the milk tube 20 extends from the first end 31 to the second end 32 in the outer tube 30, and there is a gap between the outer tube 30 and the milk tube 20. The support portion 45 is arranged on the milk tube 20, and the support portion 45 is fixed relative to the second end 32. The output port of the milk tube 20 is isolated from the gap fluid by the support portion 45. In this embodiment, the milk froth is also directly output through the milk tube 20, and its effect is the same as that of the above embodiment.

[0054] The milk froth output mechanism 400 further includes an inner tube 50, a first end 31 is sleeved on the outer side of the inner tube 50, a milk tube 20 extends from the inner tube 50 into the outer tube 30, the milk tube 20 includes a delivery tube 23, the delivery tube 23 is configured as a flexible tube, and the outer tube 30 can be extended and retracted along the axial direction of the inner tube 50. The second end 32 of the outer tube 30 is connected to an outlet sleeve 60c, and the outlet sleeve 60c fixes the support part 45 to the second end 32 of the outer tube 30. The structure of the milk tube 20 is the same as that of the aforementioned embodiment, and will not be repeated here.

[0055] Different from the above-mentioned embodiment, the milk pipe 20 further includes a pipe joint 24c, the outlet sleeve 60c includes an outer sleeve 68 and a nozzle sleeve 67, the connecting portion 61, the abutting portion 62 and the mounting hole 63 are arranged on the outer sleeve 68, the pipe joint 24c and the nozzle sleeve 67 are sealed and connected, the outlet of the nozzle sleeve 67 is connected to the joint channel 241; the outlet of the nozzle sleeve 67 is exposed from the mounting hole 63. The outlet of the nozzle sleeve 67 forms the milk froth outlet of the milk froth output mechanism 400, which can realize that the milk froth outlet directly reaches the bottom of the cup or the surface of the liquid in the cup, reduces the entry of air, and thus obtains higher quality milk froth.

[0056] The support portion 45 is provided on the pipe joint 24c, and the support portion 45 is configured as an edge protruding along the radial direction of the pipe joint 24c. The nozzle sleeve 67 is provided with a step portion 671. The connecting portion 61 is detachably connected to the second end 32 of the outer tube 30. The abutting portion 62 abuts on the step portion 671. The nozzle sleeve 67 abuts on the edge, and the edge abuts on the end of the second end 32 of the outer tube 30. The outer sleeve 68 compresses the nozzle sleeve 67 and makes the nozzle sleeve 67 and the pipe joint 24c more tightly fixed, ensuring a more reliable structure. The joint channel 241 is provided on the pipe joint 24c, and the nozzle sleeve 67 is provided with an output chamber 65 and an outlet channel 66 connected to the output chamber 65. The milk foam output from the joint channel 241 is buffered by the output chamber 65, and then the milk foam is discharged from the outlet channel 66, which can also achieve that the milk foam outlet directly reaches the bottom of the cup or the surface of the liquid in the cup, thereby avoiding or reducing the phenomenon that the milk foam hits the bottom of the cup or the surface of the liquid in the cup to form large milk foam.

[0057] In this embodiment, a damping structure 70b is provided between the inner tube 50 and the outer tube 30, and the damping structure 70b limits the outer tube 30 from moving relative to the inner tube 50 under the action of its own weight. The damping structure 70b includes a spring sheet 71, one end of which is connected to the inner tube 50, and the other end of which abuts against the inner wall of the outer tube 30. The elastic force applied to the outer tube 30 by the spring sheet 71 increases the sliding friction force of the outer tube 30 relative to the inner tube 50, so that the outer tube 30 can be manually adjusted to hover at any height within a preset range without automatically sliding down.

[0058] The damping structure 70b also includes a connecting ring 72, and the spring pieces 71 include a plurality of spring pieces 71, which are distributed on both sides of the connecting ring 72 in the axial direction and are arranged at intervals along the circumferential direction. The inner tube 50 is provided with an elastic arm 52, and the connecting ring 72 is connected to the elastic arm 52 from the free end of the elastic arm 52. The plurality of spring pieces 71 can apply elastic force to the outer tube 30 at different positions along the circumference of the inner tube 50, so that the force on the outer tube 30 is uniform, ensuring the damping effect. The elastic arm 52 provided on the inner tube 50 can facilitate the installation of the connecting ring 72. The connecting ring 72 and the spring piece 71 can be an integrated sheet metal spring piece 71 structure, which is convenient to manufacture, has a reliable structure and is low in cost.

[0059] The connecting ring 72 is provided with an opening 721, and a fixing block 521 is provided at the free end of the elastic arm 52. A guide surface 522 is provided on the fixing block 521. The connecting ring 72 is guided by the guide surface 522 along the axial direction of the inner tube 50 so that the fixing block 521 is inserted into the opening 721. The opening 721 on the sheet metal spring piece 71 structure cooperates with the fixing block 521 on the elastic arm 52. The guide surface 522 on the fixing block 521 can be an inclined surface or an arc surface. When installing, it is only necessary to push the sheet metal spring piece 71 structure from bottom to top.

[0060] The inner wall of the outer tube 30 is provided with a limit groove 36, and the spring piece 71 is engaged with the limit groove 36 to limit the limit position of the extension of the outer tube 30. When the outer tube 30 slides, the limit groove 36 can also cooperate with the spring piece 71 to prevent the outer tube 30 from separating from the inner tube 50.

[0061] In the above embodiment, the milk pipe 20 includes a delivery pipe 23 and pipe joints 24, 24a, 24b, 24c connected to the delivery pipe 23. The pipe joints 24, 24a, 24b, 24c are provided with a joint channel 241, and the diameter of the joint channel 241 is smaller than or equal to the diameter of the delivery pipe 23. When the diameter of the joint channel 241 is equal to the diameter of the delivery pipe 23, the smoothness of the flow of milk foam can be ensured; when the diameter of the joint channel 241 is smaller than the diameter of the delivery pipe 23, the milk foam is gradually pressurized when flowing downward, thereby improving the quality of the milk foam.

[0062] The utility model also relates to a beverage preparation machine, comprising a main body, wherein the main body is provided with an emulsifying device, and the emulsifying device is connected to the milk froth output mechanism in the above embodiment. The beverage preparation machine can be a device for brewing beverages such as a tea machine, a coffee machine, a milk tea machine, an automatic milk froth machine, etc. wherein a beverage outlet is provided on the beverage preparation machine, and the milk froth output mechanism is provided on one side of the beverage outlet.

[0063] In the milk froth output mechanism and beverage preparation machine of the present invention, the milk froth output by the emulsifying device is directly output through the milk pipe 20, and the milk froth will not enter the outer pipe 30. Before the milk froth reaches the outlet, the contact with the external air is reduced as much as possible, that is, the milk pipe 20 is separately provided to reduce the entry of air, thereby reducing the influence of the air in the outer pipe 30 on the milk froth, so as to improve the quality of the milk froth, and the milk froth output into the cup can meet the requirements.

[0064] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0065] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A milk froth output mechanism, characterized in that: include: A milk tube having an input end and an output end arranged opposite to each other, wherein the input end is connected to an emulsifying device, wherein the emulsifying device is used to generate milk foam formed by mixing air and emulsion, and the milk tube serves as a conveying conduit for the milk foam to flow out; an outer tube, sleeved on the outer side of the milk tube, the outer tube having a first end and a second end opposite to each other, the milk tube extending from the first end to the second end in the outer tube, with a gap between the outer tube and the milk tube; and A support portion is provided on the milk tube, the support portion is fixed relative to the second end, and the output port of the milk tube is isolated from the gap fluid by the support portion.

2. The milk froth dispensing mechanism according to claim 1, characterized in that: The milk pipe includes a pipe joint, the support part is arranged on the pipe joint, the pipe joint is provided with a joint channel, the joint channel is isolated from the gap fluid by the support part, and the milk froth output mechanism also includes an outlet sleeve, the outlet sleeve is connected to the second end, and the outlet sleeve fixes the support part to the second end.

3. The milk froth output mechanism according to claim 2, characterized in that: It also includes an inner tube, the first end is sleeved on the outer side of the inner tube, the milk tube extends from the inner tube into the outer tube, the milk tube includes a flexible tube, and the outer tube can be extended and retracted along the axial direction of the inner tube.

4. The milk froth output mechanism according to claim 2 or 3, characterized in that: The outlet sleeve comprises a connecting portion and an abutting portion, wherein the connecting portion is detachably connected to the second end, and the supporting portion is configured as an edge protruding in a radial direction of the pipe joint, wherein the edge is defined between an end portion of the second end and the abutting portion.

5. The milk froth dispensing mechanism according to claim 2 or 3, characterized in that: It also includes a nozzle sleeve, the pipe joint and the nozzle sleeve are sealingly connected, the outlet of the nozzle sleeve is connected to the joint channel; the outlet sleeve is provided with a mounting hole, the outlet of the nozzle sleeve is exposed from the mounting hole; the support portion is constructed as an edge protruding along the radial direction of the pipe joint, the outlet sleeve includes an abutting portion, the nozzle sleeve is provided with a step portion, the abutting portion abuts against the step portion, the nozzle sleeve abuts against the edge, and the edge abuts against the end of the second end.

6. The milk froth dispensing mechanism according to claim 2 or 3, characterized in that: The outlet sleeve is provided with a mounting hole, the pipe joint is inserted into the mounting hole, and the outlet of the joint channel is exposed from the mounting hole.

7. The milk froth output mechanism according to claim 2 or 3, characterized in that: The outlet sleeve is provided with an output cavity and an outlet channel connected to the output cavity, the pipe joint extends into the output cavity, and the joint channel is connected to the outlet channel through the output cavity.

8. The milk froth output mechanism according to claim 3, characterized in that: A damping structure is arranged between the inner tube and the outer tube, and the damping structure limits the outer tube from moving relative to the inner tube under the action of its own weight; the first end of the outer tube is connected to a fixing sleeve, and the outer tube is slidably connected to the inner tube through the fixing sleeve; a stopper is connected to the inner tube, and the stopper is arranged between the damping structure and the fixing sleeve, and the stopper abuts against the fixing sleeve to limit the extreme position of the extension of the outer tube.

9. The milk froth dispensing mechanism according to claim 3, characterized in that: A damping structure is arranged between the inner tube and the outer tube, and the damping structure limits the outer tube from moving relative to the inner tube under the action of its own gravity; the damping structure includes a spring sheet, one end of which is connected to the inner tube, and the other end of which abuts against the inner wall of the outer tube; the damping structure also includes a connecting ring, and the spring sheet includes a plurality of spring sheets, which are distributed on both sides of the connecting ring in the axial direction and are arranged at intervals along the circumferential direction.

10. The milk froth dispensing mechanism according to claim 9, characterized in that: An elastic arm is provided on the inner tube, and the connecting ring is connected to the elastic arm from the free end of the elastic arm. The connecting ring is provided with an opening, and a fixing block is provided at the free end of the elastic arm. A guide surface is provided on the fixing block. The connecting ring is guided by the guide surface along the axial direction of the inner tube so that the fixing block is stuck in the opening.

11. The milk froth dispensing mechanism according to claim 1, characterized in that: The milk pipe comprises a delivery pipe and a pipe joint connected to the delivery pipe, the pipe joint is provided with a joint channel, and the pipe diameter of the joint channel is less than or equal to the pipe diameter of the delivery pipe.

12. The milk froth dispensing mechanism according to claim 2 or 3, characterized in that: The milk pipe comprises a delivery pipe and a pipe joint connected to the delivery pipe, and the pipe diameter of the joint channel is smaller than or equal to the pipe diameter of the delivery pipe.

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