Steam rod and beverage preparation machine

Abstract

The utility model discloses a steam rod and a beverage preparation machine. The steam rod comprises a steam outlet pipe, an adapter and a hard pipe, the adapter comprises a near section, a middle section and a far section which are sequentially arranged in the steam conveying direction, the adapter is connected with the steam outlet pipe through the near section, the adapter is connected with the hard pipe through the far section, the steam rod further comprises a reinforcing structure, the hardness of the reinforcing structure is larger than that of the adapter, and the reinforcing structure extends in the steam conveying direction. At least part of the reinforcing structure is connected with the middle section. According to the steam rod, by arranging the reinforcing structure, the overall strength and the bending resistance of the steam rod are improved, the swing angle of the steam rod is reduced, and it is ensured that the steam rod meets the requirement of safety regulations.

Description

Technical Field

[0001] The utility model relates to the technical field of food or beverage preparation, and particularly relates to a steam rod and a beverage preparation machine. Background Art

[0002] A beverage preparation machine capable of preparing milk foam generally includes a main body machine and a steam rod. The steam rod is movably arranged relative to the main body machine. During operation, the steam rod is inserted into milk to make milk foam. The steam rod generally includes components such as a steam outlet pipe, a connector, and a rigid pipe. Among them, the connector can be made of soft rubber material, which can facilitate the sealed insertion of the connector and the steam outlet pipe, and the sealed insertion of the connector and the rigid pipe.

[0003] In the prior art, on the one hand, the steam rod is movably arranged relative to the main body machine, and the steam rod itself can swing relative to the main body as a whole. On the other hand, since the steam outlet pipe and the rigid pipe are connected by a relatively soft connector, there is also swing inside the steam rod. The two swings can be superimposed, resulting in a large swing at the outlet part of the rigid pipe. If the swing angle is too large, the ejected steam may spray onto the user, posing a safety risk, that is, the steam rod is bent and deformed, which cannot meet the requirements of safety regulations. Summary of the Utility Model

[0004] To solve the problem of easy bending and deformation of the steam rod in the prior art, the purpose of the utility model is to provide a steam rod that can reduce bending and deformation, and a beverage preparation machine that can meet the safety regulations requirements related to the rotation angle of the steam rod.

[0005] To achieve the above-mentioned utility model purpose, an embodiment of the utility model provides a steam rod, including a steam outlet pipe, a connector, and a rigid pipe; the connector includes a proximal section, a middle section, and a distal section arranged in sequence along the steam transmission direction. The connector is connected to the steam outlet pipe through the proximal section, and the connector is connected to the rigid pipe through the distal section. The steam rod further includes a strengthening structure, the hardness of the strengthening structure is greater than that of the connector, the strengthening structure extends along the steam transmission direction, and at least a part of the strengthening structure is connected to the middle section.

[0006] As a further improvement of the utility model, one end of the strengthening structure extends along the steam transmission direction to the corresponding proximal section, and / or, the other end of the strengthening structure extends along the steam transmission direction to the corresponding distal section.

[0007] As a further improvement of the utility model, the steam outlet pipe is inserted into the proximal section, and the distal section is inserted into the rigid pipe;

[0008] The outer diameter of the middle section is greater than that of the distal section to form a first step limiting portion of the adapter between the middle section and the distal section, and the first step limiting portion abuts against the rigid tube.

[0009] As a further improvement of the present invention, the reinforcing structure is arranged inside the adapter. The steam outlet pipe has a first steam channel, the reinforcing structure has a second steam channel, and the distal section has a third steam channel. The first steam channel, the second steam channel, and the third steam channel are sequentially communicated along the steam transmission direction, and a steam nozzle for ejecting steam of the third steam channel is located inside the rigid tube.

[0010] As a further improvement of the present invention, the reinforcing structure and the adapter are integrally formed, or the reinforcing structure and the steam outlet pipe are integrally formed.

[0011] As a further improvement of the present invention, the reinforcing structure extends into the distal section. Along a direction perpendicular to the steam transmission direction, the reinforcing structure has a first projection, and the distal section has a second projection. The first overlapping length of the first projection and the second projection is greater than or equal to 10 mm.

[0012] As a further improvement of the present invention, the reinforcing structure extends into the proximal section. Along a direction perpendicular to the steam transmission direction, the proximal section has a third projection, and the second overlapping length of the first projection and the third projection is less than or equal to the first overlapping length.

[0013] As a further improvement of the present invention, the steam rod at least satisfies one of the following characteristics:

[0014] The aperture of the second steam channel is greater than or equal to 2.5 mm;

[0015] Along a direction perpendicular to the steam transmission direction, the reinforcing structure has a first projection, and the distal section has a second projection. The first projection and the second projection have an overlapping length, and the wall thickness of the distal section corresponding to the overlapping length is greater than or equal to 3 mm;

[0016] The hardness of the adapter is greater than or equal to 50 degrees and less than or equal to 75 degrees;

[0017] The distal section is in interference fit with the rigid tube, and the interference amount between the distal section and the rigid tube is greater than or equal to 0.1 mm;

[0018] Air holes are provided on the rigid tube, and the rigid tube and the distal section cooperate to form an air inlet channel, and the air inlet channel communicates the air holes with the steam nozzle.

[0019] As a further improvement of the present utility model, the strengthening structure is sleeved outside the adapter and the rigid pipe. Along the direction perpendicular to the steam transmission direction, the projection of the strengthening structure partially overlaps with the projection of the proximal section, and the projection of the strengthening structure partially overlaps with the projection of the distal section;

[0020] A second step limiting portion adapted to the first step limiting portion is provided on the strengthening structure, and the first step limiting portion abuts against the second step limiting portion.

[0021] To achieve one of the above-mentioned utility model purposes, an embodiment of the present utility model provides a beverage preparation machine, which includes a main body, and a fixed joint fixedly connected to the main body. It further includes a steam rod as described above. The steam outlet pipe is communicated with a steam source in the main body. The steam outlet pipe is movably connected to the fixed joint, and the steam rod can swing relative to the main body within a preset angle.

[0022] Compared with the common technology, the present utility model has the following beneficial effects: By setting the strengthening structure, the overall strength and anti-bending ability of the steam rod are improved, its swing angle is reduced, ensuring that the steam rod meets the requirements of safety regulations. With the improvement of strength, the durability of the steam rod is longer and its service life is longer. At the same time of improving the overall strength, it neither affects the sealed connection between the adapter and the steam outlet pipe and the rigid pipe, nor requires a large increase in the overall structural size of the steam rod, maintaining the portability and easy operation of the steam rod, and bringing a better use experience to users. Description of the Drawings

[0023] Figure 1 is a schematic structural view of the steam rod according to the first embodiment of the present utility model;

[0024] Figure 2 is a cross-sectional view of the steam rod according to the first embodiment of the present utility model;

[0025] Figure 3 is a cross-sectional view of the adapter and the strengthening structure according to the first embodiment of the present utility model;

[0026] Figure 4 is a cross-sectional view of the steam rod according to the second embodiment of the present utility model;

[0027] Figure 5 is a schematic structural view of the steam rod according to the third embodiment of the present utility model;

[0028] Figure 6 is a cross-sectional view of the steam rod according to the third embodiment of the present utility model. Detailed Description of the Embodiments

[0029] The following will describe the present utility model in detail in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present utility model, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included in the protection scope of the present utility model.

[0030] 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 to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of relative spatial positions may be intended to include different orientations of the device in addition to the orientation shown in the drawings during use or operation.

[0031] An embodiment of the present utility model provides a steam rod with high overall strength and not easily bent, and a beverage preparation machine that can meet the safety regulations requirements related to the rotation angle of the steam rod.

[0032] The beverage preparation machine of this embodiment can be a tea machine, a coffee machine, a milk tea machine, etc., which are devices that use steam to brew beverages. The beverage preparation machine includes a main body, a fixed joint 50, and a steam rod 100. The fixed joint 50 is fixedly connected to the main body, and the steam rod 100 is movably connected to the fixed joint 50. Specifically, the steam rod 100 is rotatably connected to the fixed joint 50, and the steam rod 100 can swing relative to the fixed joint 50. That is to say, the steam rod 100 itself as a whole can swing relative to the main body.

[0033] The steam rod 100 refers to Figure 1 、 2 As shown in FIGS. 4 - 6, the steam rod 100 includes a steam outlet pipe 10, a swivel joint 20, and a rigid pipe 30. The steam outlet pipe 10 is communicated with the steam source in the main body. The steam generated by the steam source can be supplied to the steam outlet pipe 10. The steam outlet pipe 10 is movably connected to the fixed joint 50. Specifically, the steam outlet pipe 10 is rotatably connected to the fixed joint 50, and the steam outlet pipe 10 can swing relative to the fixed joint 50. A swing angle limiting structure is provided between the steam outlet pipe 10 and the fixed joint 50, so that the steam rod 100 can only swing relative to the main body within a preset angle.

[0034] The swivel joint 20 includes a proximal section 21, a middle section 22, and a distal section 23 arranged in sequence along the steam transmission direction T1. The swivel joint 20 is connected to the steam outlet pipe 10 through the proximal section 21, and the swivel joint 20 is connected to the rigid pipe 30 through the distal section 23. The proximal section 21 of the swivel joint 20 in this embodiment is detachably connected to the steam outlet pipe 10, which is convenient for removing the swivel joint 20 from the steam outlet pipe 10 for cleaning. The distal section 23 of the swivel joint 20 and the rigid pipe 30 are detachably connected, which is convenient for removing the rigid pipe 30 from the swivel joint 20 for cleaning. It can be easily disassembled and assembled, so there is no problem of cleaning dead corners.

[0035] The hardness of the steam outlet pipe 10 and the rigid pipe 30 in this embodiment is higher than that of the adapter 20. To achieve the sealed connection between the adapter 20 and the steam outlet pipe 10, and the sealed connection between the adapter 20 and the rigid pipe 30, the adapter 20 needs to be set as a soft material part. The adapter 20 generally uses rubber material, and can also be silica gel material. The rigid pipe 30 is preferably made of metal material, that is, the rigid pipe 30 is constructed as a metal pipe. The steam rod 100 made of metal material has high strength and high temperature resistance, and the wall thickness can be made very thin. Specifically, stainless steel materials such as 304 and 316L can be used, which have high strength and will not affect food safety.

[0036] To clearly express the positions and directions described in this embodiment, in this embodiment, the upstream along the steam transmission direction T1 is defined as up, and the downstream is defined as down. That is to say, the adapter 20 is connected to the steam outlet pipe 10 from bottom to top, the rigid pipe 30 is connected to the adapter 20 from bottom to top, and the steam sprays out from top to bottom. The up and down here are only a kind of name definition, which can be parallel to the up and down in physics, or can have an included angle with the up and down directions in physics.

[0037] Along the steam transmission direction T1, the middle section 22 of the adapter 20 extends a preset distance L1 in a direction away from the rigid pipe 30. The preset distance L1 can be set to different values according to needs, and specific various situations will be elaborated in the following embodiments. The outer diameter of the middle section 22 is larger than the outer diameter of the far section 23, so as to form the first step limiting part 25 of the adapter 20 between the middle section 22 and the far section 23. The far section 23 extends into the rigid pipe 30, and the rigid pipe 30 can abut against the first step limiting part 25 for convenient connection and positioning. Along the steam transmission direction T1, the area extending a preset distance L1 upward from the first step limiting part 25 corresponds to the middle section 22 of the adapter 20.

[0038] The steam rod 100 further includes a strengthening structure 40. The hardness of the strengthening structure 40 is greater than that of the adapter 20. The strengthening structure 40 extends along the steam transmission direction T1, and at least part of the strengthening structure 40 is connected to the middle section 22.

[0039] As described above, the proximal section 21 is connected to the steam outlet pipe 10, and the distal section 23 is connected to the rigid pipe 30. Moreover, the hardness of both the steam outlet pipe 10 and the rigid pipe 30 is higher than that of the adapter 20. Therefore, the steam rod 100 is relatively soft only at the middle section 22 of the adapter 20 and is also prone to swing or even be bent at this position. Connecting the reinforcing structure 40 to the middle section 22 can support and reinforce the steam rod 100 at the softest and most critical position. The reinforcing structure 40 can increase the bending resistance of the steam rod 100, enhance the overall strength of the steam rod 100, and make it not easily bent by the user. Compared with the steam rod in the background art, the swing angle inside the steam rod 100 of this embodiment is limited, which can ensure the stability and safety of the steam rod 100 during use, extend the service life of the beverage preparation machine, and improve the safety factor of the beverage preparation machine.

[0040] Further, one end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding proximal section 21, and / or, the other end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding distal section 23.

[0041] In some specific embodiments, one end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding proximal section 21.

[0042] In other specific embodiments, the other end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding distal section 23.

[0043] In other specific embodiments, one end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding proximal section 21, and the other end of the reinforcing structure 40 extends along the steam transmission direction T1 to the corresponding distal section 23.

[0044] The steam outlet pipe 10 is inserted into the proximal section 21, and the distal section 23 is inserted into the rigid pipe 30. Specifically, the steam outlet pipe 10 is inserted into the entire proximal section 21, and the entire distal section 23 is inserted into the rigid pipe 30. Taking the two ends of the reinforcing structure 40 extending to the proximal section 21 and the distal section 23 respectively as an example, the reinforcing structure 40 can improve the rigidity of the entire middle section 22 of the steam rod 100, further enhance the overall stability and strength of the steam rod 100, avoid structural deformation and bending caused by local torsional swing, and improve the reliability of the overall structure.

[0045] The following further illustrates the reinforcing structure 40 through three embodiments.

[0046] Embodiment 1

[0047] As Figure 1-3 shown, the reinforcing structure 40 of this Embodiment 1 is arranged inside the adapter 20. The reinforcing structure 40 plays a role in supporting and strengthening the steam rod 100 inside.

[0048] The steam outlet pipe 10 has a first steam channel 11, the strengthening structure 40 has a second steam channel 41, and the distal section 23 has a third steam channel 24. The first steam channel 11, the second steam channel 41, and the third steam channel 24 are sequentially connected along the steam delivery direction T1. The steam nozzle for ejecting steam of the third steam channel 24 is located inside the rigid pipe 30. The first steam channel 11, the second steam channel 41, and the third steam channel 24 are sequentially connected to form a steam delivery channel of the steam rod 100. The steam delivery channel is used to deliver the steam generated by the steam source to the steam nozzle. The strengthening structure 40 constitutes a part of the steam delivery channel. The steam is sequentially delivered outward along the first steam channel 11, the second steam channel 41, and the third steam channel 24, ensuring the smoothness of the steam during the delivery process. In addition, the strengthening structure 40 encloses a hollow cylindrical space, which is the second steam channel 41. The strengthening structure 40 is evenly arranged in the circumferential direction around the axis of the steam rod 100 and can resist the force of the steam rod 100 swinging in all directions. That is to say, the rigid pipe 30, the adapter 20, and the steam outlet pipe 10 can be completely disassembled and then installed at any angle between any two of them. The strengthening structure 40 can always reduce or even prevent the swing in any direction, further improving the overall strength and stability of the steam rod 100 and improving the anti-bending property of the steam rod 100 in any direction.

[0049] In addition, as Figure 1 shown, air holes 31 communicating the inside and outside of the rigid pipe 30 are provided on the wall of the rigid pipe 30. As Figure 2 shown, the rigid pipe 30 and the distal section 23 cooperate to form an air intake channel. The air intake channel communicates the air holes 31 with the steam nozzle. There is a mixing space between the steam nozzle and the port of the rigid pipe 30 away from the strengthening structure 40. When the steam in the steam outlet pipe 10 is ejected from the steam nozzle of the adapter 20, the high-speed ejected steam forms a vacuum at the steam nozzle, generating a pressure difference. Due to the pressure difference, the outside air is sucked into the steam nozzle along the air intake channel through the air holes 31. The air and steam can be mixed in the mixing space. The mixed steam and air are ejected together into the container containing milk. The air, steam, and milk can be mixed in the mixing space to whip the milk through the air and heat the milk through the steam, and finally prepare the milk into hot milk foam.

[0050] As Figure 2 shown, in the direction perpendicular to the steam delivery direction T1, the projection of the strengthening structure 40 completely covers the middle section 22 within the preset distance L1, achieving a more firm support.

[0051] As Figure 3As shown, the end of the near section 21 forms a first flared opening 201, the end of the reinforcement structure 40 near the near section 21 forms a second flared opening 401, and the steam outlet pipe 10 is inserted into the first flared opening 201 and the second flared opening 401 in sequence to achieve fixed connection with the reinforcement structure 40 and the near section 21. The first flared opening 201 and the second flared opening 401 can both be configured as tapered openings, and the flared opening structure can play a guiding role when the steam outlet pipe 10 is inserted, facilitating the rapid assembly of the steam outlet pipe 10, and can also ensure that it is installed in place, that is, sealed in place, thereby enhancing the overall sealing and ensuring the reliability of the steam rod 100.

[0052] On the basis that the adapter 20 is set as soft rubber, the reinforcement structure 40 can be set as hard rubber. The soft rubber and the hard rubber are matched with each other, soft outside and hard inside, respectively achieving their own effects. In order to facilitate production and assembly, the reinforcement structure 40 and the adapter 20 are set as an integrally formed structure, such as Figure 3 As shown, the reinforcing structure 40 and the steam outlet pipe 10 are integrally formed structures of different materials. In the production process, the adapter 20 containing the reinforcing structure 40 is integrally formed by two-color injection molding, which reduces the assembly steps of the reinforcing structure 40 and the adapter 20 in the actual product assembly, and the gap between the reinforcing structure 40 and the adapter 20 is smaller or even eliminated, which improves the production and assembly efficiency while improving the structural strength and enhancing the consistency and stability of the product.

[0053] The reinforcement structure 40 further extends into the distal section 23, and perpendicular to the steam delivery direction T1, the reinforcement structure 40 has a first projection, the distal section 23 has a second projection, and the first overlapping length of the first projection and the second projection is greater than or equal to 10 mm. That is, the steam outlet pipe 10 continues to extend downward from the first step limiter 25 for a distance of at least 10 mm. The longer first overlapping length can ensure the supporting and reinforcing effect of the reinforcement structure 40 on the adapter 20, prevent bending and deformation at the first step limiter 25, optimize the force distribution of the steam rod 100, and further improve the stability and bending resistance of the overall structure.

[0054] In addition, the reinforcing structure 40 extends into the proximal section 21, and the proximal section 21 has a third projection perpendicular to the steam delivery direction T1, and the second overlapping length between the first projection and the third projection is less than or equal to the first overlapping length. The first projection and the third projection have a second overlapping length, which can improve the supporting and reinforcing effect of the reinforcing structure 40 on the adapter 20; the second overlapping length is less than or equal to the first overlapping length, which can save the volume of the reinforcing structure 40 on the premise of ensuring the supporting and reinforcing effect on the adapter 20, and facilitate the spatial layout of various components of the entire steam rod.

[0055] The aperture of the second steam channel 41 is greater than or equal to 2.5 mm, thus ensuring the normal circulation of steam in the third steam channel 24 .

[0056] Along the direction T1 perpendicular to the steam transmission direction, the distal section 23 has a second projection. The first projection and the second projection have an overlapping length. The wall thickness of the distal section 23 corresponding to the overlapping length is greater than or equal to 3 mm. This wall thickness dimension can ensure the deformation ability of the distal section 23 corresponding to the overlapping length, can ensure the sealed connection with the rigid pipe 30, and is also convenient for the assembly with the rigid pipe 30.

[0057] The distal section 23 is in interference fit with the rigid pipe 30. The interference amount between the distal section 23 and the rigid pipe 30 is greater than or equal to 0.1 mm. This interference amount dimension can ensure the sealing performance of the connection between the distal section 23 and the rigid pipe 30.

[0058] The hardness of the adapter 20 is greater than or equal to 50 degrees and less than or equal to 75 degrees. This hardness parameter meets the hardness requirement of the adapter, which is convenient for realizing the sealed assembly of the adapter 20 with the rigid pipe 30 and the sealed assembly of the adapter 20 with the steam outlet pipe 10.

[0059] Embodiment 2

[0060] As Figure 4 shown, what is the same between Embodiment 2 and Embodiment 1 is that the strengthening structure 40 is also located inside the adapter 20. The steam outlet pipe 10 includes a first steam channel 11. The strengthening structure 40 includes a second steam channel 41. The adapter 20 includes a third steam channel 24. The first steam channel 11, the second steam channel 41, and the third steam channel 24 are sequentially connected along the steam transmission direction T1. The steam nozzle of the third steam channel 24 for ejecting steam is located inside the rigid pipe 30. The first steam channel 11, the second steam channel 41, and the third steam channel 24 are sequentially connected to form a steam transmission channel of the steam rod 100. The steam transmission channel is used to transmit the steam generated by the steam source to the steam nozzle.

[0061] The difference between Embodiment 2 and Embodiment 1 is that the strengthening structure 40 and the adapter 20 are not set as an integrally formed structure. Instead, the strengthening structure 40 and the steam outlet pipe 10 are set as an integrally formed structure. The strengthening structure 40 and the steam outlet pipe 10 are an integrally formed structure of the same material. Specifically, the integral forming can be achieved by injection molding. The strengthening structure 40 can be understood as an extended section of the steam outlet pipe 10. The integrally formed structure improves the overall hardness of the steam outlet pipe 10, improves the structural strength of the steam rod 100, and is also more convenient for production and installation.

[0062] Continue as Figure 4As shown, the distal section 23 is inserted into the rigid tube 30, and the reinforcing structure 40 further extends into the distal section 23. Along the direction perpendicular to the steam delivery direction T1, the reinforcing structure 40 has a first projection, and the distal section 23 has a second projection. The first overlapping length of the first projection and the second projection is greater than or equal to 10 mm. That is, the steam outlet pipe 10 continues to extend downward from the first step limiting portion 25 for at least 10 mm. The longer first overlapping length can ensure the support and strengthening effect of the reinforcing structure 40 on the adapter 20, prevent bending and deformation at the first step limiting portion 25, optimize the force distribution of the steam rod 100, and further improve the stability and bending resistance of the overall structure.

[0063] In this Embodiment 2, the steam rod 100 at least satisfies one of the following characteristics:

[0064] (1) The aperture diameter of the second steam channel 41 is greater than or equal to 2.5 mm, which ensures the normal flow of the steam in the third steam channel 24.

[0065] (2) Along the direction perpendicular to the steam delivery direction T1, the distal section 23 has a second projection, and the first projection and the second projection have an overlapping length. The wall thickness of the distal section 23 corresponding to the overlapping length is greater than or equal to 3 mm. This wall thickness dimension can ensure the deformation ability of the distal section 23 corresponding to the overlapping length, can ensure the sealed connection with the rigid tube 30, and is also convenient for the assembly with the rigid tube 30.

[0066] (3) The distal section 23 and the rigid tube 30 are in interference fit, and the interference amount between the distal section 23 and the rigid tube 30 is greater than or equal to 0.1 mm. This interference amount dimension can ensure the sealing performance of the connection between the distal section 23 and the rigid tube 30.

[0067] (4) The hardness of the adapter 20 is greater than or equal to 50 degrees and less than or equal to 75 degrees. This hardness parameter meets the hardness requirements of the adapter, is convenient for realizing the sealed assembly of the adapter 20 and the rigid tube 30, and the sealed assembly of the adapter 20 and the steam outlet pipe 10;

[0068] Embodiment 3

[0069] Different from Embodiments 1 and 2, the reinforcing structure 40 in this Embodiment 3 is arranged on the outermost layer of the steam rod 100. As Figure 5-6 shown, the reinforcing structure 40 is sleeved outside the adapter 20 and the rigid tube 30. On the one hand, this improves the structural strength of the steam rod 100 from the outside, can prevent the steam rod from undergoing undesired bending deformation under external forces, and on the other hand, can reduce the external wear of the steam rod 100, improving the durability and service life of the steam rod 100.

[0070] Further, in the third embodiment, along the direction perpendicular to the steam delivery direction T1, the projection of the reinforcing structure 40 partially coincides with the projection of the proximal section 21 and also partially coincides with the projection of the distal section 23. That is to say, as Figure 6 shown, along the direction perpendicular to the steam delivery direction T1, the projection of the middle section 23 is completely covered by the reinforcing structure 40, and both ends of the reinforcing structure 40 extend to the corresponding proximal section 21 and distal section 23 to provide better support for the key middle section 22 position of the steam rod 100. In the steam delivery direction T1, the length of the reinforcing structure 40 is greater than the preset distance L1.

[0071] The reinforcing structure 40 is provided with a second step limiting portion 42 adapted to the first step limiting portion 25, and the first step limiting portion 25 abuts against the second step limiting portion 42. Since the diameter of the adapter 20 becomes smaller from large at the first step limiting portion 25, there is stress concentration, so this position is prone to bending. The reinforcing structure 40 can sleeve the second step limiting portion 42 to prevent the adapter 20 from bending at the first step limiting portion 25.

[0072] In addition, as Figure 5-6 shown, the reinforcing structure 40 further includes a handle portion 43, and the handle portion 43 extends outwards to facilitate the user to operate the steam rod 100.

[0073] Applying the improved steam rod 100 described above to the beverage preparation machine significantly improves the safety and reliability of the beverage preparation machine. The steam delivery during the beverage preparation process is more stable, and the steam rod 100 is not prone to unexpected swinging by the user, reducing the occurrence of equipment maintenance, failure rate and safety accidents, and improving the user experience and the service life of the equipment.

[0074] Compared with the prior art, this embodiment has the following beneficial effects:

[0075] By setting the reinforcing structure 40, the overall strength and anti-bending ability of the steam rod 100 are improved, its swinging angle is reduced, ensuring that the steam rod 100 meets the requirements of safety regulations. With the improvement of strength, the durability of the steam rod 100 is longer and its service life is longer. At the same time of improving the overall strength, it neither affects the sealed connection between the adapter and the steam outlet pipe and the rigid pipe, nor requires an excessive increase in the overall structural size of the steam rod 100, maintaining the portability and easy operation of the steam rod 100 and bringing a better use experience to the user.

[0076] It should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way 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.

[0077] 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 steam rod, comprising a steam outlet pipe, an adapter and a hard pipe; the adapter comprises a near section, a middle section and a far section arranged in sequence along the steam delivery direction, the adapter is connected to the steam outlet pipe through the near section, and the adapter is connected to the hard pipe through the far section, characterized in that: The steam rod further comprises a reinforcement structure, the hardness of the reinforcement structure is greater than the hardness of the adapter, the reinforcement structure extends along the steam delivery direction, and at least a part of the reinforcement structure is connected to the middle section.

2. The steam rod according to claim 1, characterized in that One end of the reinforcement structure extends along the steam delivery direction to the corresponding proximal section, and / or the other end of the reinforcement structure extends along the steam delivery direction to the corresponding distal section.

3. The steam rod according to claim 1, characterized in that The steam outlet pipe is inserted into the near section, and the far section is inserted into the hard pipe; The outer diameter of the middle section is greater than the outer diameter of the distal section, so as to form a first step limit portion of the adapter between the middle section and the distal section, and the first step limit portion abuts against the hard tube.

4. The steam rod according to claim 3, characterized in that The reinforcement structure is arranged inside the adapter, the steam outlet pipe has a first steam channel, the reinforcement structure has a second steam channel, the distal section has a third steam channel, the first steam channel, the second steam channel and the third steam channel are connected in sequence along the steam delivery direction, and the steam nozzle of the third steam channel for spraying steam is located in the hard tube.

5. The steam rod according to claim 4, characterized in that The reinforcement structure and the adapter are configured as an integrally formed structure, or the reinforcement structure and the steam outlet pipe are configured as an integrally formed structure.

6. The steam rod according to claim 4, characterized in that The reinforcement structure extends into the distal section, and has a first projection perpendicular to the steam delivery direction, and the distal section has a second projection, and a first overlapping length of the first projection and the second projection is greater than or equal to 10 mm.

7. The steam rod according to claim 6, characterized in that The reinforcement structure extends into the proximal section, and the proximal section has a third projection along a direction perpendicular to the steam delivery direction, and a second overlapping length between the first projection and the third projection is less than or equal to the first overlapping length.

8. The steam rod according to any one of claims 4 to 7, characterized in that The steam rod meets at least one of the following characteristics: The aperture of the second steam channel is greater than or equal to 2.5 mm; In a direction perpendicular to the steam delivery direction, the reinforcement structure has a first projection, the distal segment has a second projection, the first projection and the second projection have an overlapping length, and the wall thickness of the distal segment corresponding to the overlapping length is greater than or equal to 3 mm; The hardness of the adapter is greater than or equal to 50 degrees and less than or equal to 75 degrees; The distal section and the hard tube are interference fit, and the interference between the distal section and the hard tube is greater than or equal to 0.1 mm; The hard tube is provided with an air hole, and the hard tube cooperates with the distal section to form an air intake channel, and the air intake channel connects the air hole and the steam nozzle.

9. The steam rod of claim 3, wherein: The reinforcement structure is sleeved on the outside of the adapter and the hard pipe, and the projection of the reinforcement structure partially overlaps with the projection of the near section in a direction perpendicular to the steam delivery direction, and the projection of the reinforcement structure partially overlaps with the projection of the far section; The reinforcing structure is provided with a second step limiting portion adapted to the first step limiting portion, and the first step limiting portion abuts against the second step limiting portion.

10. A beverage preparation machine, comprising a main body and a fixed joint fixedly connected to the main body, characterized in that: It also includes the steam rod as described in any one of claims 1 to 9, the steam outlet pipe is connected to the steam source in the main body, the steam outlet pipe is movably connected to the fixed joint, and the steam rod can swing relative to the main body within a preset angle.

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