Steam rod group and beverage preparation machine
By combining the spacing design between the inner and outer tubes with a temperature sensor, the heat insulation problem when holding the steam wand is solved, resulting in a more comfortable user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-03-17
AI Technical Summary
The existing steam wands have inadequate heat insulation design on the outside of the wand, causing the user to feel excessive heat when holding it, which can easily lead to burns.
The design employs an inner tube and an outer tube spaced apart. The inner tube is used to transfer steam and measure the container temperature, while the outer tube is separated from the inner tube by a gas layer to reduce heat transfer. Combined with insulation materials and temperature sensors, the insulation effect is optimized.
It effectively reduces the surface temperature of the outer tube, improves user comfort when holding it, avoids burns, and enhances the user experience.
Smart Images
Figure CN223994720U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of beverage preparation equipment technology, specifically to a steam rod assembly and a beverage preparation machine. Background Technology
[0002] As people's living standards continue to improve, their taste in beverages is also constantly evolving. Many people are no longer satisfied with a single type of drink and prefer to customize their beverages according to their own preferences. Take coffee machines as an example. Coffee machines can dispense coffee or milk. Existing coffee machines generally have an external steam wand that receives steam and heats or foams the coffee or milk dispensed by the machine to create a customized beverage. However, existing steam wands typically only have a rubber layer covering the outer part of the wand through which steam flows, corresponding to the area where the user holds the hand. This rubber layer easily conducts heat radiating outwards from the wand, resulting in the user still feeling hot while holding it and easily gripping the unrubber-covered part of the wand, causing burns. Utility Model Content
[0003] The main purpose of this utility model is to propose a steam bar assembly and a beverage preparation machine, which aims to solve the problem of unreasonable heat insulation design on the outside of the traditional steam bar.
[0004] To achieve the above objectives, this utility model proposes a steam rod assembly, comprising:
[0005] Outer tube body;
[0006] An inner tube, running in the same direction through the outer tube, includes an inlet end and an outlet end arranged opposite each other along its length. The inlet end is used to receive external steam, and the outlet end is used to discharge steam outwards.
[0007] A temperature sensor includes a connecting section, an extension section, and a measuring section connected sequentially along the steam flow direction of the inner tube. The extension section passes through at least the outer tube. The connecting section and the measuring section are exposed outward from two openings of the outer tube. The connecting section is used to connect to an external electrical control device, and the measuring section is used to measure the temperature of the liquid in the outer container when the steam rod assembly extends into the outer container.
[0008] The inner peripheral sidewall of the outer tube and the outer peripheral sidewall of the inner tube are spaced apart.
[0009] Optionally, the outer tube and the inner tube are coaxially arranged.
[0010] Optionally, the extension is located radially to the side of the inner tube and is disposed adjacent to the inner tube.
[0011] Optionally, the extension section passes through the inner tube.
[0012] Optionally, the extension section is coaxially arranged with the inner tube body.
[0013] Optionally, if the distance between the inner peripheral sidewall of the outer tube and the outer peripheral sidewall of the inner tube is R, and the distance between the inner peripheral sidewall of the inner tube and the outer peripheral sidewall of the extension is r, then R is not less than r.
[0014] Optionally, the connecting section extends axially outward from the corresponding opening of the outer tube and / or the inner tube; and / or,
[0015] The measuring segment extends axially outward from the corresponding opening of the outer tube and / or the inner tube.
[0016] Optionally, the outer tube is entirely made of thermal insulation material; or,
[0017] The outer tube is provided with a heat insulation material layer, and the heat insulation material layer surrounds the entire outer periphery of the inner tube.
[0018] Optionally, the steam rod assembly further includes a connector, which is provided corresponding to the inlet end and seals the outer tube and the inner tube. The connector is provided with an air inlet channel, which is connected to the inlet end. The radial cross-sectional area of the air inlet channel is not less than the radial cross-sectional area of the inlet end. The connecting section extends outward from the air inlet channel.
[0019] Optionally, the steam rod assembly further includes a cover body, which is provided corresponding to the outlet end and seals the outer tube body and the inner tube body. The cover body is provided with an exhaust channel and an installation channel, which are radially spaced apart. The exhaust channel is connected to the outlet end, and the measuring section extends outward from the installation channel.
[0020] Optionally, at least two air outlet channels are provided at intervals around the outer periphery of the mounting channel.
[0021] Furthermore, to achieve the above objectives, this utility model provides a beverage preparation machine, comprising:
[0022] The body; and,
[0023] The steam rod assembly described above is externally mounted on the machine body.
[0024] In the technical solution provided by this utility model, the inlet of the inner tube is used to receive external steam, which flows through the inner tube and is discharged outward through the outlet to, for example, an external container. During this process, the tube wall of the inner tube exchanges heat with the steam and continues to transfer heat outward. Since the outer tube and the inner tube are not in direct contact, but are separated by gas, and the thermal conductivity of the gas is generally low, it helps to reduce the heat transferred from the inner tube to the outer tube, making the outer surface temperature of the outer tube relatively lower, which helps to make the user feel comfortable when holding it. Moreover, the inner tube is entirely inserted into the outer tube, so that the temperature is suitable for any part of the outer tube held by the user, which facilitates user operation and improves the user experience. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0026] Figure 1 A perspective view of an embodiment of the steam rod assembly provided by this utility model;
[0027] Figure 2 for Figure 1 Exploded view of the main structure of the steam rod assembly;
[0028] Figure 3 for Figure 1 A three-dimensional schematic diagram of the steam rod assembly from another perspective;
[0029] Figure 4 for Figure 1 A schematic diagram of the axial cross-section of the steam rod assembly;
[0030] Figure 5 for Figure 1 A schematic diagram of the radial cross-section of the steam rod assembly.
[0031] Explanation of icon numbers:
[0032] 100 Outer tube body; 110 First annular gap; 200 Inner tube body; 210 Second annular gap; 220 Inlet end; 230 Outlet end; 300 Temperature sensor; 310 Connecting section; 320 Extension section; 330 Measuring section; 400 Connector; 410 Inlet channel; 500 Cover; 510 Outlet channel; 520 Mounting channel.
[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0037] This utility model provides a steam rod assembly and a beverage preparation machine using it. The specific form of the beverage preparation machine is not limited; it can be a product that prepares ready-made beverages, or a product that prepares a beverage first from powder and / or liquid materials, and then prepares the beverage accordingly. The preparation methods achievable based on the steam rod assembly can include, but are not limited to, heating the beverage with steam, or foaming the beverage using steam and air.
[0038] In addition to the steam wand assembly, a beverage blender also includes a body, which typically has a front surface and a rear surface facing the user. Taking a coffee machine as an example, the body also has a tray protruding forward on the front surface. The tray includes a base recessed to form a water collection trough, and a grid bracket covering the opening of the water collection trough. The grid bracket can hold external containers and filters out larger particles of residue using its grid. The body also typically has a downward-facing beverage outlet on the front surface, above the tray, which can dispense beverages such as milk or coffee into external containers placed on the tray.
[0039] Therefore, the steam rod assembly is generally externally mounted on the machine body, and preferably located on the front surface of the machine body. The steam rod assembly is generally positioned at least adjacent to the tray, so that the steam rod assembly can supply steam to an external container placed on the tray.
[0040] In addition, steam rod assemblies are generally only used for circulating steam. In this case, the beverage preparation machine has a built-in steam source, or it is a separate product from the beverage preparation machine that serves as the steam source. The steam source generates steam and connects it to the steam rod assembly.
[0041] Specifically, please combine Figures 1 to 5 The steam rod assembly includes an outer tube 100, an inner tube 200, and a temperature sensor 300. The inner tube 200 is inserted into the outer tube 100 in the same direction. The inner tube 200 includes an inlet end 220 and an outlet end 230 arranged opposite each other along its length. The inlet end 220 is used to receive external steam, and the outlet end 230 is used to discharge steam. The temperature sensor 300 includes a connecting section 310, an extension section 320, and a measuring section 330 connected sequentially along the steam flow direction of the inner tube 200. The extension section 320 is at least inserted into the outer tube 100. The connecting section 310 and the measuring section 330 are exposed outwards from two openings of the outer tube 100. The connecting section 310 is used to connect to external electrical control devices, and the measuring section 330 is used to measure the temperature of the liquid in the external container when the steam rod assembly is inserted into the external container. The inner circumferential sidewall of the outer tube 100 and the outer circumferential sidewall of the inner tube 200 are spaced apart.
[0042] In the technical solution provided by this utility model, the inlet port of the inner tube 200 is used to connect to external steam. After flowing through the inner tube 200, the steam is discharged outward through the outlet 230 to, for example, an external container. During this process, the tube wall of the inner tube 200 exchanges heat with the steam and continues to transfer heat outward. Since the outer tube 100 and the inner tube 200 are not in direct contact, but are separated by gas, the thermal conductivity of the gas is generally low, which helps to reduce the heat transferred from the inner tube 200 to the outer tube 100, making the outer surface temperature of the outer tube 100 relatively lower, which helps to make the user feel comfortable when holding it. Moreover, the inner tube 200 is entirely inserted inside the outer tube 100, so that the temperature is suitable for any part of the outer tube 100 held by the user, which facilitates user operation and improves the user experience.
[0043] It is understood that the steam rod assembly as a whole, the outer tube 100, the inner tube 200 and the temperature sensor 300 all extend in an elongated shape along the first direction.
[0044] The inner tube 200 is hollow and is generally made of a strong metal material. The hollow structure of the inner tube 200 allows for the connection of external steam; therefore, the inner tube 200 has an inlet and an outlet. It should be noted that the inlet and / or outlet are not limited to being defined by the opening of the inner tube 200. In other embodiments, the inlet and / or outlet can also be located on the side wall of the inner tube 200 as needed. Furthermore, one or at least two inlets and / or outlets can be provided as needed. The shape and size of the inlet and / or outlet are not limited. Figures 1 to 5 In the illustrated embodiment, to simplify the structure and facilitate molding, both the inlet and outlet are directly formed by the two openings of the inner tube 200. Therefore, the end of the inner tube 200 where the inlet opening is located constitutes the inlet end 220, and the end of the inner tube 200 where the outlet opening is located constitutes the outlet end 230. In practical applications, at least the outlet end 230 of the inner tube 200 will extend into the outer container to allow for smoother and safer steam introduction into the outer container.
[0045] Similarly, the outer tube 100 is hollow, and to achieve heat insulation, it is generally made of a material with a lower thermal conductivity than the inner tube 200, i.e., a heat-insulating material. However, it should be noted that:
[0046] In one application, the outer tube 100 can be entirely made of insulating material. However, depending on actual needs, the outer tube 100 can be made entirely of the same insulating material, or it can be made of multiple insulating materials in different areas. When the outer tube 100 is made of multiple insulating materials in different areas, the areas can be divided sequentially according to the radial, axial and / or circumferential directions of the outer tube 100.
[0047] In another application, the outer tube 100 may be partially made of insulating material, i.e., it includes both insulating and non-insulating material layers. The non-insulating material layer generally refers to a material layer with a thermal conductivity not lower than that of the inner tube 200, but with greater structural strength than the insulating material layer. In this way, the outer tube 100 can achieve insulation based on the insulating material layer and structural reinforcement based on the non-insulating material layer. The insulating material layer is disposed at least around the entire outer circumference of the inner tube 200. However, similarly, the insulating material layer can be made of a single insulating material or made of multiple insulating materials in different areas. When the insulating material layer is made of multiple insulating materials in different areas, the areas can be divided sequentially according to the radial, axial, and / or circumferential directions of the outer tube 100.
[0048] Furthermore, the outer peripheral sidewall of the outer tube 100 may be provided with at least some structures to facilitate user hand grip, such as anti-slip rough protrusions, or fitting grooves that conform to the shape of the fingers.
[0049] When the inner tube 200 is entirely inserted into the hollow structure of the outer tube 100, there is at least a partial gap between the outer peripheral wall of the inner tube 200 and the inner peripheral wall of the outer tube 100. This gap is naturally filled with air, or specifically filled with other gases with lower thermal conductivity. In this way, the heat conducted through the inner tube 200 to the outside of the outer tube 100 can be further reduced through the gap, achieving a better heat insulation effect.
[0050] Generally, the hollow structure of the outer tube 100 is a regular cylinder along the first direction, and the inner tube 200 is also generally a regular cylinder along the first direction. When the inner tube 200 is inserted through the hollow structure of the outer tube 100, the inner tube 200 can be eccentrically positioned, that is, the central axis of the outer tube 100 is approximately parallel to but not collinear with the central axis of the inner tube 200. In this case, if the outer peripheral sidewall of the inner tube 200 and the inner peripheral sidewall of the outer tube 100 are partially in contact and partially separated, the gap formed between them is generally a circumferentially non-connected chamber; if the outer peripheral sidewall of the inner tube 200 and the inner peripheral sidewall of the outer tube 100 are not in contact, the gap formed between them is generally a circumferentially connected, eccentric annular chamber. In this embodiment, the outer tube 100 and the inner tube 200 are coaxially positioned. That is, the central axis of the outer tube 100 is basically collinear with the central axis of the inner tube 200. At this time, the outer peripheral sidewall of the inner tube 200 and the inner peripheral sidewall of the outer tube 100 do not abut against each other, and the gap formed between them is a circumferentially connected, concentric annular cavity, which is the first annular gap 110. The setting of the first annular gap 110 ensures that the heat conduction effect between the inner tube 200 and the outer tube 100 is consistent in all directions, which helps to further improve the user's hand-held comfort.
[0051] Based on one or more of the above embodiments, in a further embodiment, the extension section 320 is at least inserted into the hollow structure of the outer tube 100, specifically, for example, it can be inserted into the first annular gap 110, located radially to the side of the inner tube 200, and adjacent to the inner tube 200. In this way, the placement of the temperature sensor 300 does not interfere with the steam flowing inside the inner tube 200, but the width of the first annular gap 110 must be at least equivalent to the corresponding dimension of the extension section 320. However, ideally, the temperature sensor 300 may not abut against the outer or inner peripheral sidewall of the inner tube 200; that is, the width of the first annular gap 110 must be greater than the corresponding dimension of the extension section 320.
[0052] Alternatively, in another embodiment, the extension section 320 is inserted within the inner tube 200. In this way, the extension section 320 does not additionally interfere with the dimensional design of the first annular gap 110, resulting in a smaller overall radial dimension and a more compact structure for the steam rod assembly.
[0053] Similarly, when the extension section 320 is entirely inserted into the hollow structure of the inner tube 200, there is at least a partial gap between the outer peripheral sidewall of the extension section 320 and the inner peripheral sidewall of the inner tube 200, allowing steam to flow within the gap. Generally, the hollow structure of the inner tube 200 is a regular cylinder along the first direction, and the extension section 320 is also generally a regular cylinder along the first direction. When the extension section 320 is entirely inserted into the hollow structure of the inner tube 200, the extension section 320 can be eccentrically positioned, that is, the central axis of the inner tube 200 and the central axis of the extension section 320 are approximately parallel but not collinear. At this point, if the outer peripheral sidewall of the extension section 320 and the inner peripheral sidewall of the inner tube 200 are partially in contact or partially separated, the gap formed between them is generally a circumferentially non-connected chamber. If neither the outer peripheral sidewall of the extension section 320 nor the inner peripheral sidewall of the inner tube 200 is in contact, the gap formed between them is generally a circumferentially connected, eccentric annular chamber. In this embodiment, the inner tube 200 and the extension section 320 are coaxially arranged. That is, the central axis of the inner tube 200 and the central axis of the extension section 320 are basically collinear. At this point, neither the outer peripheral sidewall of the extension section 320 nor the inner peripheral sidewall of the inner tube 200 is in contact, and the gap formed between them is a circumferentially connected, concentric annular chamber, which is the second annular gap 210. The setting of the second annular gap 210 ensures that the flow velocity and flow rate in each direction between the extension section 320 and the inner tube 200 are consistent, which helps to further improve the stability of steam flow.
[0054] In a further embodiment, if the distance between the inner circumferential sidewall of the outer tube 100 and the outer circumferential sidewall of the inner tube 200 is R, and the distance between the inner circumferential sidewall of the inner tube 200 and the outer circumferential sidewall of the extension section 320 is r, then R is not less than r. It can be understood that when R is set to a larger value, a longer heat exchange path and a larger heat exchange area can be formed between the outer tube 100 and the inner tube 200, thereby helping to improve the heat exchange efficiency of the outer tube 100 to the inner tube 200 and optimize the heat exchange effect. Conversely, under the premise of meeting the flow rate requirements, setting r to a smaller value helps to increase the steam velocity within the inner tube 200.
[0055] Furthermore, the connecting section 310 and / or measuring section 330 described above can be flush with and exposed at the opening of the inner tube 200 / outer tube 100. Alternatively, the connecting section 310 and / or measuring section 330 can each extend axially to protrude a certain length outward from the opening of the inner tube 200 / outer tube 100, thereby reserving more length for the connecting section 310 to be connected, and / or for the measuring section 330 to extend into the liquid surface of the outer container for temperature measurement.
[0056] In one embodiment, the steam rod assembly further includes a connector 400, which is disposed corresponding to the inlet end 220 and seals over the outer tube 100 and the inner tube 200. That is, the connector 400 can at least close the corresponding opening of the first annular gap 110. The connector 400 is provided with an air inlet channel 410, which communicates with the inlet end 220. The radial cross-sectional area of the air inlet channel 410 is not less than the radial cross-sectional area of the inlet end 220, which helps to increase the flow rate of steam transmitted to the inlet end 220 via the air inlet channel 410. After stabilizing the steam flow rate within the air inlet channel 410, the steam flows into the second annular gap 210. The connecting section 310 extends outward from the air inlet channel 410.
[0057] It should be noted that the connector 400 can be configured as a single unit structure or at least two unit structures, depending on actual needs. When configured as at least two unit structures, one of the unit structures can be used to seal the first annular gap 110 and / or achieve a better connection with the outer tube 100 and the inner tube 200. The remaining unit structures can be configured as needed, for example, to further seal the first annular gap 110 and / or further achieve a better connection with the outer tube 100 and the inner tube 200; to provide outer protection for the aforementioned unit structures; and to facilitate the installation of the steam rod assembly with other components.
[0058] In another embodiment, the steam rod assembly further includes a cover 500, which is disposed corresponding to the outlet end 230 and seals the outer tube 100 and the inner tube 200. That is, the cover 500 can at least close the corresponding opening of the first annular gap 110. The cover 500 is provided with an exhaust channel 510 and an installation channel 520, which are radially spaced apart. The exhaust channel 510 communicates with the outlet end 230, and the measuring section 330 extends outward from the installation channel 520. By independently setting the exhaust channel 510 and the installation channel 520, the path of steam discharge is kept as far apart as possible from the measuring section 330, avoiding the steam discharge affecting the measurement results of the measuring section 330 on the liquid in the external container.
[0059] Furthermore, at least two exhaust channels 510 are spaced apart around the outer periphery of the mounting channel 520. In this way, steam can be discharged in multiple directions around the outer periphery of the mounting channel 520 through the exhaust channels 510, which helps to increase the flow rate and volume of steam discharged outward.
[0060] Similarly, the cover 500 can be configured as a single unit structure or at least two unit structures as needed. When configured as at least two unit structures, one of the unit structures can be used to seal the first annular gap 110 and / or achieve a better connection with the outer tube 100 and the inner tube 200. The remaining unit structures can be configured as needed, for example, to further seal the first annular gap 110 and / or to further achieve a better connection with the outer tube 100 and the inner tube 200; to provide outer protection for the aforementioned unit structures; and to facilitate the installation of the steam rod assembly with other components.
[0061] It should be noted that the extension length of the measuring section 330 from the mounting channel 520 is generally not limited, but needs to be set within a suitable range. If the extension length of the measuring section 330 is too long, it may lead to an overestimation of the accurate value for the liquid inside the external container; conversely, if the extension length of the measuring section 330 is too short, it may lead to an underestimation of the accurate value for the liquid inside the external container. For example, for coffee machines, a length of 6 ± 0.5 mm is generally preferred.
[0062] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A steam wand assembly, characterized by, The steam rod set comprises: an outer tube body; an inner tube body coaxially arranged in the outer tube body, the inner tube body comprising an inlet end and an outlet end oppositely arranged in the length direction of the inner tube body, the inlet end being used to access external steam, and the outlet end being used to discharge steam outwardly; and a temperature sensor comprising a connecting section, an extending section and a measuring section connected in sequence along the steam flow direction of the inner tube body, the extending section being arranged at least in the outer tube body, the connecting section and the measuring section being exposed outwardly from two tube ports of the outer tube body respectively, the connecting section being used to connect external electric control devices, and the measuring section being used to measure the temperature value of liquid in an external container when the steam rod set is inserted into the external container. The inner circumferential wall of the outer tube body and the outer circumferential wall of the inner tube body are arranged at intervals.
2. The vapor rod cluster of claim 1, wherein, The outer tube body and the inner tube body are coaxially arranged.
3. The vapor rod cluster of claim 1, wherein, The extending section is arranged at the radial side of the inner tube body and adjacent to the inner tube body.
4. The vapor rod cluster of claim 1 wherein, The extending section is arranged in the inner tube body.
5. The vapor rod cluster of claim 4, wherein, The extending section is coaxially arranged with the inner tube body.
6. The vapor rod cluster of claim 4 wherein, The interval between the inner circumferential wall of the outer tube body and the outer circumferential wall of the inner tube body is R, the interval between the inner circumferential wall of the inner tube body and the outer circumferential wall of the extending section is r, and R is not less than r.
7. The vapor rod cluster of claim 1 wherein, The connecting section protrudes outwardly in the axial direction from the corresponding tube port of the outer tube body and / or the inner tube body; and / or The measuring section protrudes outwardly in the axial direction from the corresponding tube port of the outer tube body and / or the inner tube body.
8. The vapor rod cluster of claim 1 wherein, The outer tube body is made of a heat insulation material as a whole; or The outer tube body is provided with a heat insulation material layer, and the heat insulation material layer is arranged around the entire outer periphery of the inner tube body.
9. The vapor rod cluster of claim 1 wherein, The steam rod set further comprises a joint member arranged corresponding to the inlet end and sealingly covering the outer tube body and the inner tube body, the joint member being provided with an air inlet channel, the air inlet channel being in communication with the inlet end, the radial cross-sectional area of the air inlet channel being not less than the radial cross-sectional area of the inlet end, and the connecting section protruding outwardly from the air inlet channel.
10. The vapor rod cluster of claim 1 wherein, The steam rod set further comprises a cover body arranged corresponding to the outlet end and sealingly covering the outer tube body and the inner tube body, the cover body being provided with an air outlet channel and a mounting channel, the air outlet channel and the mounting channel being spaced apart in the radial direction, the air outlet channel being in communication with the outlet end, and the measuring section protruding outwardly from the mounting channel.
11. The vapor rod cluster of claim 10, wherein, The air outlet channel is spaced apart from the mounting channel in the outer periphery of the mounting channel by at least two.
12. A beverage preparation machine characterized in that, The steam rod set comprises: a machine body; and The steam rod set according to any one of claims 1 to 11 is externally arranged in the machine body.