Heating assembly and hot drink equipment

Abstract

The embodiment of the utility model relates to the technical field of heating, and particularly discloses a heating assembly and hot drink equipment, the heating assembly comprises an inner pipe, a heating outer pipe and a first sealing piece; the inner pipe is sleeved with the heating outer pipe, and the inner pipe and the heating outer pipe jointly define a spiral channel. The first sealing piece is arranged between the inner pipe and the heating outer pipe, the first sealing piece and the spiral channel are arranged in a double-spiral mode in the same direction, and the first sealing piece seals and isolates any two adjacent spiral sections in the spiral channel. By means of the mode, according to the embodiment of the utility model, the spirally-arranged first sealing piece is provided with the plurality of first spiral sealing sections, and any one first spiral sealing section in the spirally-arranged first sealing piece seals and isolates any two adjacent spiral sections in the spiral channel; furthermore, a gap between any two adjacent spiral sections in the spiral channel is reduced, so that the water mixing phenomenon between any two adjacent spiral sections in the spiral channel is reduced, and the hot spot generation problem is reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of heating, and in particular, to a heating component and a hot drink device. Background Art

[0002] A thick film heating tube refers to a heating pipe with a heating film covered on the pipe wall. The design of the thick film heating tube enables it to transfer heat more effectively, shortening the heating time of the liquid flowing through the thick film heating tube, and it is widely used in hot drink devices, such as water dispensers, coffee machines, or milk warmers, etc.

[0003] Currently, the thick film heating tube generally includes a heating outer tube provided with a heating film and an inner tube provided with spiral grooves. The heating outer tube and the inner tube are assembled to form a spiral channel for the liquid to flow through. However, the inner tube usually uses a high-pressure forming process to process the spiral grooves, which easily causes the tolerance dimensions of the inner tube to change. When the inner tube and the heating outer tube are assembled, due to the change in the tolerance dimensions of the inner tube, therefore, it is easy to make the gap between the inner tube and the heating outer tube too large, resulting in insufficient sealing between any two adjacent spiral segments of the spiral channel. As a result, the liquid does not flow along the path of the spiral channel, but flows between any two adjacent spiral segments, causing water leakage between any two adjacent spiral segments, resulting in uneven liquid distribution in the spiral channel, and easily generating hot spot problems, that is, a certain area of the spiral channel is hotter than other areas, thereby causing uneven local heat accumulation in the spiral channel, forming hot spots, and thus affecting the overall heating effect of the spiral channel. Summary of the Utility Model

[0004] The main technical problem to be solved by the embodiments of the present utility model is to provide a heating component and a hot drink device that can reduce the generation of hot spot problems.

[0005] To solve the above technical problem, one technical solution adopted by the embodiments of the present utility model is: to provide a heating component, including an inner tube, a heating outer tube, and a first sealing member; the heating outer tube is sleeved on the inner tube, and the inner tube and the heating outer tube jointly enclose a spiral channel; the first sealing member is arranged between the inner tube and the heating outer tube, and the first sealing member and the spiral channel are arranged in a coaxial double spiral manner, and the first sealing member seals and isolates any two adjacent spiral segments in the spiral channel.

[0006] Optionally, a spiral groove is arranged on the outer side wall of the inner tube, the heating outer tube is sleeved on the inner tube, and the heating outer tube closes the opening of the spiral groove to form the spiral channel.

[0007] Optionally, the inner tube further includes a first inner sleeve and a second inner sleeve. A spiral through groove is provided on the side wall of the first inner sleeve. The spiral through groove penetrates the side wall of the first inner sleeve and is spirally arranged in the direction from one end of the first inner sleeve to the other end of the first inner sleeve. The first inner sleeve is sleeved on the second inner sleeve, and the second inner sleeve closes one side of the spiral through groove to form the spiral groove.

[0008] Optionally, the inner tube further includes a second seal. The second seal is arranged between the first inner sleeve and the second inner sleeve. The second seal and the spiral groove are arranged in a coaxial double spiral manner, and the second seal seals and isolates the bottoms of any two adjacent spiral segments in the spiral groove.

[0009] Optionally, the heating outer tube includes an outer sleeve and a heating element. The outer sleeve is sleeved on the inner tube, and the heating element covers the outer side wall of the outer sleeve.

[0010] Optionally, the outer sleeve is provided with a liquid inlet and a liquid outlet. The liquid inlet and the liquid outlet are arranged at intervals. The liquid inlet communicates with one end of the spiral channel, and the liquid outlet communicates with the other end of the spiral channel.

[0011] Optionally, the heating assembly further includes a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is sealingly connected to the liquid inlet, and the liquid outlet pipe is sealingly connected to the liquid outlet.

[0012] Optionally, the heating element includes an insulating layer, a resistance layer, a conductor layer, and a covering layer. The insulating layer, the resistance layer, the conductor layer, and the covering layer are stacked in sequence, and the insulating layer covers the outer side wall of the outer sleeve.

[0013] Optionally, the heating assembly further includes a first annular seal and a second annular seal. The first annular seal and the second annular seal are oppositely arranged between the inner tube and the heating outer tube. The first annular seal seals one end between the inner tube and the heating outer tube, and the second annular seal seals the other end between the inner tube and the heating outer tube.

[0014] To solve the above technical problems, another technical solution adopted in the embodiment of the present invention is: to provide a hot drink device including the above heating assembly.

[0015] The beneficial effects of the embodiments of the present utility model are as follows: Different from the prior art, the embodiments of the present utility model provide a heating assembly, including an inner tube, a heating outer tube, and a first seal; the heating outer tube is sleeved on the inner tube, and a spiral channel is jointly enclosed by the inner tube and the heating outer tube; the first seal is arranged between the inner tube and the heating outer tube, and the first seal and the spiral channel are arranged in a coaxial double helix, and the first seal seals and isolates any two adjacent spiral segments in the spiral channel. In this way, the embodiments of the present utility model can make the first seal arranged in a spiral have several first spiral seal segments, and any one of the first spiral seal segments in the first seal arranged in a spiral seals and isolates any two adjacent spiral segments in the spiral channel, thereby reducing the gap between any two adjacent spiral segments in the spiral channel, and thus reducing the water leakage phenomenon between any two adjacent spiral segments in the spiral channel, so as to reduce the generation of hot spot problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally marked with similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 is a schematic diagram of the overall structure of the heating assembly provided by the embodiments of the present utility model;

[0018] Figure 2 is an exploded view of the overall structure of the heating assembly provided by the embodiments of the present utility model;

[0019] Figure 3 is a cross-sectional view of the overall structure of the heating assembly provided by the embodiments of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the first embodiment of the inner tube of the heating assembly provided by the embodiments of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the second embodiment of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 1 ;

[0022] Figure 6 is a schematic diagram of the structure of the second embodiment of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 2 ;

[0023] Figure 7 is a schematic diagram of the structure of the second embodiment of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 3 ;

[0024] Figure 8Schematic diagram of Embodiment 3 of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 1 ;

[0025] Figure 9 Schematic diagram of Embodiment 3 of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 2 ;

[0026] Figure 10 Schematic diagram of Embodiment 3 of the inner tube of the heating assembly provided by the embodiments of the present utility model Figure 3 。

[0027] Explanation of reference numerals:

[0028] 100 Heating assembly;

[0029] 1 Inner tube, 11 Spiral groove, 12 First inner sleeve, 121 Spiral through groove, 13 Second inner sleeve, 2 Heating outer tube, 21 Outer sleeve, 211 Liquid inlet, 212 Liquid outlet, 22 Heating element, 3 Spiral channel, 4 First seal, 5 Second seal, 6 Liquid inlet pipe, 7 Liquid outlet pipe, 8 First annular seal, 9 Second annular seal. Detailed implementation manners

[0030] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in this specification in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0032] Thick film heating tube refers to a heating pipe with a heating film covered on the tube wall. The design of the thick film heating tube enables it to transfer heat more efficiently and shorten the heating time of the liquid flowing through the thick film heating tube. It is widely used in hot beverage equipment, such as: water dispensers, coffee machines or milk warmers, etc.

[0033] At present, thick film heating tubes usually include a heating outer tube provided with a heating film and an inner tube provided with a spiral groove. The heating outer tube and the inner tube are assembled to form a spiral channel for the flow of liquid. However, the inner tube is usually processed by a high-pressure forming process to form the spiral groove, which is easy to cause the tolerance size of the inner tube to change. When the inner tube and the heating outer tube are assembled, due to the change in the tolerance size of the inner tube, it is easy to make the gap between the inner tube and the heating outer tube too large, resulting in insufficient sealing between any two adjacent spiral segments of the spiral channel. As a result, the liquid does not follow the path of the spiral channel, but flows between any two adjacent spiral segments, resulting in water cross-linking between any two adjacent spiral segments, causing uneven liquid distribution in the spiral channel and prone to hot spot problems. That is, the temperature of a certain area of the spiral channel is too high than that of other areas, resulting in uneven local heat accumulation in the spiral channel, forming hot spots, and thus affecting the overall heating effect of the spiral channel.

[0034] In view of this, the present invention provides an embodiment of a heating component 100, which can enable the spirally arranged first sealing member 4 to have a plurality of first spiral sealing segments, and any one of the first spiral sealing segments in the spirally arranged first sealing member 4 can seal and isolate any two adjacent spiral segments in the spiral channel 3, thereby reducing the gap between any two adjacent spiral segments in the spiral channel 3, thereby reducing the water cross-talk phenomenon between any two adjacent spiral segments in the spiral channel 3, and reducing the generation of hot spot problems.

[0035] For the above heating assembly 100, please refer to Figures 1 to 3 The heating assembly 100 includes an inner tube 1, a heating outer tube 2 and a first seal 4; the heating outer tube 2 is sleeved on the inner tube 1, and the inner tube 1 and the heating outer tube 2 jointly enclose a spiral channel 3; the first seal 4 is arranged between the inner tube 1 and the heating outer tube 2, and the first seal 4 and the spiral channel 3 are arranged in a double helix in the same direction, and the first seal 4 seals and isolates any two adjacent spiral segments in the spiral channel 3.

[0036] For the first seal 4 described above, in some embodiments, the first seal 4 is prepared and formed using a paste-like brazing filler metal. The paste-like brazing filler metal is coated on the inner sidewall of the heating outer tube 2 or the outer sidewall of the inner tube 1. When the heating outer tube 2 is sleeved on the inner tube 1, the heating outer tube 2 or the inner tube 1 is heated by a brazing torch to evaporate the brazing flux in the paste-like brazing filler metal, and the remaining brazing filler metal solidifies and forms the first seal 4. Moreover, the first seal is 4 enables the heating outer tube 2 and the inner tube 1 to be fixedly connected. In the above manner, coating the paste-like brazing filler metal on the inner sidewall of the heating outer tube 2 or the outer sidewall of the inner tube 1 can play a pre-fixing role. When the heating outer tube 2 is sleeved on the inner tube 1, the offset of the paste-like brazing filler metal can be reduced, so that the paste-like brazing filler metal reaches the preset position, that is, the paste-like brazing filler metal reaches between any two adjacent spiral segments in the spiral channel 3. In addition, in the above manner, brazing can completely melt the paste-like brazing filler metal during the heating process and fill the gap between the heating outer tube 2 and the inner tube 1, so that the first seal 4 formed by brazing can closely fit the inner sidewall of the heating outer tube 2 and the outer sidewall of the inner tube 1, providing high-efficiency sealing performance and reducing the phenomenon of water leakage between any two adjacent spiral segments in the spiral channel 3.

[0037] For the above-mentioned inner tube 1, please refer to Figures 1 to 3 , a spiral groove 11 is provided on the outer sidewall of the inner tube 1. The heating outer tube 2 is sleeved on the inner tube 1, and the heating outer tube 2 closes the notch of the spiral groove 11 to form a spiral channel 3. Among them, when the heating outer tube 2 is sleeved on the inner tube 1, the inner sidewall of the heating outer tube 2 and the groove wall of the spiral groove 11 on the outer sidewall of the inner tube 1 jointly enclose to form a spiral channel 3.

[0038] In some embodiments, for the above-mentioned inner tube 1, please refer to Figures 2 to 4 , Figures 2 to 4 shows the first embodiment of the inner tube 1. The inner tube 1 is an integrally formed structure. The spiral groove 11 is formed on the outer sidewall of the inner tube 1 through a machining process. When the heating outer tube 2 is sleeved on the inner tube 1, the inner sidewall of the heating outer tube 2 and the groove wall of the spiral groove 11 on the outer sidewall of the inner tube 1 jointly enclose to form a spiral channel 3.

[0039] In some embodiments, for the above-mentioned inner tube, please refer to Figures 5 to 7 , Figures 5 to 7Embodiment 2 of the inner tube 1 is shown. The inner tube 1 is a split-molded structure. The inner tube 1 further includes a first inner sleeve 12 and a second inner sleeve 13. The first inner sleeve 12 is provided with a spiral groove 11. The first inner sleeve 12 is sleeved on the second inner sleeve 13. The outer side wall of the second inner sleeve 13 abuts against the inner side wall of the first inner sleeve 12. When the heating outer tube 2 is sleeved on the first inner sleeve 12, the inner side wall of the heating outer tube 2 and the groove wall of the spiral groove 11 on the outer side wall of the first inner sleeve 12 together enclose a spiral channel 3. Among them, the first inner sleeve 12 is formed with a spiral groove 11 on the outer side wall by an internal high-pressure forming process.

[0040] In some embodiments, for the above-mentioned inner tube 1, please refer to Figures 8 to 10 , Figures 8 to 10 Embodiment 3 of the inner tube 1 is shown. The inner tube 1 is a split-molded structure. The inner tube 1 further includes a first inner sleeve 12 and a second inner sleeve 13. The side wall of the first inner sleeve 12 is provided with a spiral through groove 121. The spiral through groove 121 penetrates the side wall of the first inner sleeve 12, and in the direction from one end of the first inner sleeve 12 to the other end of the first inner sleeve 12, the spiral through groove 121 is spirally arranged. The first inner sleeve 12 is sleeved on the second inner sleeve 13. The second inner sleeve 13 closes one side of the spiral through groove 121 to form a spiral groove 11. When the heating outer tube 2 is sleeved on the first inner sleeve 12, the inner side wall of the heating outer tube 2 closes the other side of the spiral through groove 121 on the side wall of the first inner sleeve 12 to form a spiral channel 3. Among them, the first inner sleeve 12 is formed with a spiral through groove 121 on the side wall by a laser cutting process.

[0041] In order to improve the sealing performance between the first inner sleeve 12 and the second inner sleeve 13, the inner tube 1 further includes a second sealing member 5. The second sealing member 5 is arranged between the first inner sleeve 12 and the second inner sleeve 13. The second sealing member 5 and the spiral groove 11 are arranged in a coaxial double spiral. The second sealing member 5 seals and isolates the bottom of the groove between any two adjacent spiral segments in the spiral groove 11. In this way, the spirally arranged second sealing member 5 can have a number of second spiral sealing segments, and any one of the second spiral sealing segments in the spirally arranged second sealing member 5 seals and isolates the bottom of the groove between any two adjacent spiral segments in the spiral groove 11. Among them, it should be noted that the bottom of the spiral groove 11 is formed by the outer side wall of the second inner sleeve 13 closing the notch of the spiral through groove 121 on the inner side wall of the first inner sleeve 12.

[0042] For the above-mentioned second seal 5, in some embodiments, the second seal 5 is formed by using a paste-like soldering material. The paste-like soldering material is coated on the inner side wall of the first inner sleeve 12 or the outer side wall of the second inner sleeve 13. After the first inner sleeve 12 is sleeved on the second inner sleeve 13, the first inner sleeve 12 or the second inner sleeve 13 is heated by a soldering gun to evaporate the flux in the paste-like soldering material. The remaining soldering material solidifies to form the second seal 5. Moreover, the second seal 5 fixedly connects the first inner sleeve 12 and the second inner sleeve 13. In the above manner, coating the paste-like soldering material on the inner side wall of the first inner sleeve 12 or the outer side wall of the second inner sleeve 13 can play a pre-fixing role. When the first inner sleeve 12 is sleeved on the second inner sleeve 13, the offset of the paste-like soldering material can be reduced, so that the paste-like soldering material reaches the preset position, that is, the paste-like soldering material reaches the bottom of the groove between any two adjacent spiral segments in the spiral groove 11. In addition, in the above manner, soldering can completely melt the paste-like soldering material during the heating process and fill the gap between the first inner sleeve 12 and the second inner sleeve 13, so that the second seal 5 formed by soldering can closely fit the inner side wall of the first inner sleeve 12 and the outer side wall of the second inner sleeve 13, providing efficient sealing performance.

[0043] For the above-mentioned heating outer tube 2, please refer to Figures 1 to 3 , the heating outer tube 2 includes an outer sleeve 21 and a heating element 22. The outer sleeve 21 is sleeved on the inner tube 1, and the heating element 22 covers the outer side wall of the outer sleeve 21.

[0044] For the above-mentioned heating outer tube 2, please refer to Figures 1 to 3 , the outer sleeve 21 is provided with a liquid inlet 211 and a liquid outlet 212. The liquid inlet 211 and the liquid outlet 212 are arranged at intervals. The liquid inlet 211 communicates with one end of the spiral channel 3, and the liquid outlet 212 communicates with the other end of the spiral channel 3. In the above manner, it is convenient for liquid to enter and exit the spiral channel 3.

[0045] For the above-mentioned heating element 22, in some embodiments, the covering area of the heating element 22 is greater than or equal to the covering area of the spiral groove 11. In the above manner, the spiral channel 3 can be heated evenly, and then the liquid flowing through the spiral channel 3 can be heated evenly, avoiding the phenomenon of uneven temperature in the area not covered by the heating element 22, so as to avoid causing hot spot or cold spot problems.

[0046] For the above-mentioned heating element 22, in some embodiments, the heating element 22 is a thick film heating structure. The heating element 22 includes an insulating layer, a resistance layer, a conductor layer, and a covering layer. The insulating layer, the resistance layer, the conductor layer, and the covering layer are stacked in sequence, and the insulating layer covers the outer side wall of the outer sleeve 21.

[0047] For the above-mentioned heating assembly 100, please refer to Figures 1 to 3, To facilitate the connection of the heating component 100 to an external liquid supply device, the heating component 100 further includes a liquid inlet pipe 6 and a liquid outlet pipe 7. The liquid inlet pipe 6 is sealingly connected to the liquid inlet 211, and the liquid outlet pipe 7 is sealingly connected to the liquid outlet 212. The liquid inlet pipe 6, the spiral channel 3, and the liquid outlet pipe 7 are sequentially connected to form a liquid passage.

[0048] For the above-mentioned heating component 100, please refer to Figures 1 to 3 , In some embodiments, in the direction from the inner sidewall to the outer sidewall of the heating outer tube 2, both the liquid inlet pipe 6 and the liquid outlet pipe 7 gradually extend away from the heating outer tube 2. By the above method, the liquid inlet pipe 6 and the liquid outlet pipe 7 can be connected to the heating outer tube 2, avoiding obstruction of the inner tube 1 by the liquid inlet pipe 6 and the liquid outlet pipe 7.

[0049] For the above-mentioned heating component 100, please refer to Figures 1 to 3 , The heating component 100 further includes a first annular seal 8 and a second annular seal 9. The first annular seal 8 and the second annular seal 9 are oppositely arranged between the inner tube 1 and the heating outer tube 2. The first annular seal 8 seals one end between the inner tube 1 and the heating outer tube 2, and the second annular seal 9 seals the other end between the inner tube 1 and the heating outer tube 2. By the above method, the sealing performance at both opposite ends of the spiral channel 3 can be improved, avoiding liquid leakage from the spiral channel 3.

[0050] For the above-mentioned first annular seal 8 and second annular seal 9, in some embodiments, both the first annular seal 8 and the second annular seal 9 are formed by using a paste-like soldering material. For the process of forming the first annular seal 8 and the second annular seal 9 by using a paste-like soldering material and soldering, reference can be made to the embodiment in which the first seal 4 and the second seal 5 are formed by using a paste-like soldering material, and details will not be elaborated here one by one.

[0051] An embodiment of the present invention provides a heating component 100, including an inner tube 1, a heating outer tube 2, and a first seal 4; the heating outer tube 2 is sleeved on the inner tube 1, and the inner tube 1 and the heating outer tube 2 jointly enclose a spiral channel 3; the first seal 4 is arranged between the inner tube 1 and the heating outer tube 2, and the first seal 4 and the spiral channel 3 are arranged in a coaxial double helix. The first seal 4 seals and isolates any two adjacent spiral segments in the spiral channel 3. By the above method, the embodiment of the present invention can enable the spirally arranged first seal 4 to have a plurality of first spiral seal segments, and any one of the first spiral seal segments in the spirally arranged first seal 4 seals and isolates any two adjacent spiral segments in the spiral channel 3, thereby reducing the gap between any two adjacent spiral segments in the spiral channel 3, and thus reducing the water leakage phenomenon between any two adjacent spiral segments in the spiral channel 3, so as to reduce the generation of hot spot problems.

[0052] The present utility model further provides an embodiment of a hot drink device. The hot drink device includes the above-mentioned heating assembly 100. For the specific structure and function of the above-mentioned heating assembly 100, reference can be made to the above embodiment, and details will not be repeated here.

[0053] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A heating component, characterized in that, Comprising: Inner tube; Heating outer tube, the heating outer tube is sleeved on the inner tube, and a spiral channel is jointly enclosed by the inner tube and the heating outer tube; A first seal is arranged between the inner tube and the heating outer tube, and the first seal and the spiral channel are arranged in a coaxial double spiral manner, and the first seal seals and isolates any two adjacent spiral segments in the spiral channel.

2. The heating assembly according to claim 1, wherein A spiral groove is provided on the outer side wall of the inner tube, the heating outer tube is sleeved on the inner tube, and the heating outer tube closes the notch of the spiral groove to form the spiral channel.

3. The heating assembly according to claim 2, wherein The inner tube further includes a first inner sleeve and a second inner sleeve. A spiral through groove is provided on the side wall of the first inner sleeve, the spiral through groove penetrates through the side wall of the first inner sleeve, and in the direction from one end of the first inner sleeve to the other end of the first inner sleeve, the spiral through groove is spirally arranged. The first inner sleeve is sleeved on the second inner sleeve, and the second inner sleeve closes one side of the spiral through groove to form the spiral groove.

4. The heating assembly according to claim 3, wherein The inner tube further includes a second seal, the second seal is arranged between the first inner sleeve and the second inner sleeve, the second seal and the spiral groove are arranged in a coaxial double spiral manner, and the second seal seals and isolates the bottoms of any two adjacent spiral segments in the spiral groove.

5. The heating assembly according to claim 1, wherein The heating outer tube includes an outer sleeve and a heating element, the outer sleeve is sleeved on the inner tube, and the heating element covers the outer side wall of the outer sleeve.

6. The heating assembly according to claim 5, wherein The outer sleeve is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are arranged at intervals, the liquid inlet communicates with one end of the spiral channel, and the liquid outlet communicates with the other end of the spiral channel.

7. The heating assembly according to claim 6, wherein The heating assembly further includes a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is hermetically connected to the liquid inlet, and the liquid outlet pipe is hermetically connected to the liquid outlet.

8. The heating assembly according to claim 5, wherein The heating element includes an insulating layer, a resistance layer, a conductor layer and a covering layer, the insulating layer, the resistance layer, the conductor layer and the covering layer are stacked in sequence, and the insulating layer covers the outer side wall of the outer sleeve.

9. The heating assembly according to any one of claims 1-8, wherein The heating assembly further includes a first annular seal and a second annular seal, the first annular seal and the second annular seal are oppositely arranged between the inner tube and the heating outer tube, the first annular seal seals one end between the inner tube and the heating outer tube, and the second annular seal seals the other end between the inner tube and the heating outer tube.

10. A hot drink device, characterized in that, Comprising the heating assembly according to any one of claims 1-9.

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