Fluid heating assembly and fluid treatment equipment

Abstract

The utility model discloses a fluid heating assembly and fluid treatment equipment. The technical problem that in the prior art, a fluid heating assembly is low in heat efficiency is solved. The fluid heating assembly comprises a composite pipeline and a heating element, the composite pipeline comprises an inner pipe and an outer pipe which are arranged in a nested mode, and the inner pipe and the outer pipe are the same in shape and attached to each other; the inner pipe and the outer pipe are both provided with an arched part, the heating surface of the heating element is of an inward concave structure, and the heating surface is at least partially attached to the arched surface of the arched part of the outer pipe so as to be in heat conduction contact. The gap between the outer pipe and the inner pipe can be effectively reduced by arranging the arched part, and the enough heat transfer area is guaranteed. Compared with a plane with the same projection area, the surface area of the arched surface is larger, the heat conduction area with the heating element is increased, and the heating efficiency of the composite pipeline is improved. In addition, the arched face further has a self-positioning function, the heating element can be positioned when the composite pipeline and the heating element are assembled, and no extra positioning tool is needed.

Description

Technical Field

[0001] This application belongs to the technical field of heating devices, and particularly relates to a fluid heating component and a fluid treatment device. Background Art

[0002] Common heating devices on the market include a composite pipe and a heating element. The composite pipe is composed of two pipes with different parameters nested inside and outside. The outer pipe is used to conduct heat from the heating element, and the inner pipe is used to transport fluids (such as drinking water, milk, etc.), which can ensure both high-efficiency heating and the edible safety of the fluid.

[0003] Currently, the current composite pipe and the heating element achieve heat conduction through planar fitting, and the thermal efficiency is low during use. Summary of the Utility Model

[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application provides a fluid heating component and a fluid treatment device to improve the heating efficiency.

[0005] In the first aspect of this application, a fluid heating component is provided, including:

[0006] A composite pipe, the composite pipe includes an inner pipe for fluid to flow through and an outer pipe sleeved outside the inner pipe. The inner pipe and the outer pipe have the same shape and are in contact with each other; both the inner pipe and the outer pipe are provided with arched portions arched outward;

[0007] A heating element, arranged outside the composite pipe. The heating surface of the heating element has an inwardly concave structure, and the heating surface is in at least partial thermal contact with the arched surface of the arched portion of the outer pipe.

[0008] According to the fluid heating component provided by one or more embodiments of this application, the inner pipe and the outer pipe of the composite pipe have the same shape and are in contact with each other. Both the inner pipe and the outer pipe are provided with arched portions arched toward the heating element. The arched portions can enable the inner pipe and the outer pipe to still be in close contact during the shaping process, effectively reducing the gap between the outer pipe and the inner pipe and ensuring a sufficient heat transfer area. The heating surface of the heating element has an inwardly concave structure, and the arched surface of the arched portion of the outer pipe is in thermal contact with the heating surface of the heating element. Compared with a plane with the same projected area, the surface area of the contact surface between the arched structure and the inwardly concave structure is larger, increasing the heat conduction area with the heating element and improving the heating efficiency of the fluid heating component. In addition, the arched surface also has a self-positioning function, which can position the heating element when the composite pipe and the heating element are assembled, and no additional positioning tooling is required.

[0009] In some embodiments, the contour line of the arched portion is a curve composed of more than one arc, or a broken line composed of multiple straight lines, or a line type composed of more than one arc and more than one straight line.

[0010] In some embodiments, the contour line of the remaining pipe segments of the composite pipe except the arched portion is a curve composed of more than one arc, or a broken line composed of multiple straight lines; the composite pipe is a non-circular pipe.

[0011] In some embodiments, the material of the outer pipe is different from the material of the inner pipe; the thermal conductivity of the outer pipe is greater than the thermal conductivity of the inner pipe.

[0012] In some embodiments, the wall thickness range of the outer pipe is 0.5 - 1.5 mm; the wall thickness range of the inner pipe is 0.3 - 0.8 mm.

[0013] In some embodiments, the wall thickness of the outer pipe is 0.75 mm; the wall thickness of the inner pipe is 0.4 mm.

[0014] In some embodiments, the ratio of the wall thickness of the outer pipe to the wall thickness of the inner pipe is 5:3 - 15:8.

[0015] In some embodiments, the coincidence rate of the heating surface of the heating element and the arched surface of the composite pipe is greater than 50%.

[0016] In the second aspect of the present application, there is provided a fluid processing device, including a fluid storage device, a power element, and the fluid heating assembly of the first aspect above. The fluid stored in the fluid storage device is driven by the power element into the inner pipe of the fluid heating assembly, and is heated by the heat of the heating element during the process of flowing in the inner pipe.

[0017] In some embodiments, the fluid processing device is a coffee machine, a steam oven, or an instant hot water dispenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Shows a schematic assembly structure diagram of a composite pipe and a heating element in the related art.

[0020] Figure 2 Shows a schematic cross-sectional structure diagram of a composite pipe before shaping in the related art.

[0021] Figure 3 Shows a schematic cross-sectional structure diagram of a composite pipe in the related art after shaping.

[0022] Figure 4 Shows the structural schematic of a fluid heating component in one or more embodiments of the present application Figure 1 .

[0023] Figure 5 Shows the structural schematic of a fluid heating component in one or more embodiments of the present application Figure 2 .

[0024] Figure 6 Shows the structural schematic of a fluid heating component in one or more embodiments of the present application Figure 3 .

[0025] Figure 7 Shows the structural schematic of a fluid heating component in one or more embodiments of the present application Figure 4 .

[0026] Figure 8 Shows the structural schematic of a fluid heating component in one or more embodiments of the present application Figure 5 .

[0027] Figure 9 Shows the structural schematic of the composite pipe of a fluid heating component in one or more embodiments of the present application Figure 1 .

[0028] Figure 10 Shows the structural schematic of the composite pipe of a fluid heating component in one or more embodiments of the present application Figure 2 .

[0029] Figure 11 Shows the structural schematic of the composite pipe of a fluid heating component in one or more embodiments of the present application Figure 3 .

[0030] Figure 12 Shows the structural schematic of the composite pipe of a fluid heating component in one or more embodiments of the present application Figure 4 .

[0031] Figure 13 Shows the structural schematic of the heating element of a fluid heating component in one or more embodiments of the present application Figure 1 .

[0032] Figure 14 Shows the structural schematic of the heating element of a fluid heating component in one or more embodiments of the present application Figure 2 .

[0033] Figure 15Schematic structure of the heating element of the fluid heating assembly in one or more embodiments of the present application is shown Figure 3 。

[0034] Figure 16 Schematic structure of the heating element of the fluid heating assembly in one or more embodiments of the present application is shown Figure 4 。

[0035] Explanation of reference numerals: 10 - composite pipe; 11 - inner pipe; 12 - outer pipe; 13 - arching part; 14 - arching surface; 15 - remaining pipe segments. 20 - heating element, 21 - heating surface. 100 - fluid heating assembly. Detailed implementation manners

[0036] In order to enable those skilled in the art in the technical field to which the present application belongs to understand the present application more clearly, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0037] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0038] Please refer to Figure 1 and Figure 3 , in the fluid heating assembly 100a of the related art, both the heat conducting surface A of the composite pipe 10a and the heating surface 21a of the heating element 20a are flat surfaces. This requires that after the inner pipe 11a and the outer pipe 12a of the composite pipe 10a are nested, the heat conducting surface A needs to be shaped by a mold. The heating element 20a is directly made into a structural form with a flat heating surface 21a, or the heating surface 21a in the shape of a flat surface is shaped through a shaping process. The heat conducting surface A of the composite pipe 10a and the heating surface 21a of the heating element 20a are brazed to form Figure 1 the fluid heating assembly 100a shown.

[0039] The cross-sectional shape of the composite pipe 10a before shaping is as shown in Figure 2 . During the shaping process, the inner pipe 11a of the composite pipe 10a is prone to warp inward, resulting in a gap B between the inner pipe 11a and the outer pipe 12a, as shown in Figure 2 . This gap B causes uneven local heating of the inner pipe 11a and affects the heat transfer efficiency.

[0040] In addition, during planar brazing, an additional positioning tooling is required to fix the relative positions of the composite pipe 10a and the heating element 20a, so that the heat-conducting surface A of the composite pipe 10a and the heat-generating surface 21a of the heating element 20a have a high coincidence rate, ensuring a sufficient heat transfer area. The use of this positioning tooling increases the production cost on the one hand, and makes the operation process more complex, lengthens the production cycle, and reduces the production efficiency on the other hand.

[0041] Therefore, the present application proposes a fluid heating assembly and a fluid processing device, which at least solve one of the technical problems existing in the above related technologies. The content of the present application will be introduced in detail below in conjunction with the drawings and specific embodiments.

[0042] In the first aspect embodiment of the present application, a fluid heating assembly is provided. Please refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , which respectively show the cross-sectional structure diagrams of the fluid heating assembly 100 in different embodiments. The fluid heating assembly 100 includes a composite pipe 10 and a heating element 20. The heating element 20 is arranged outside the composite pipe 10. For the convenience of description, the arrangement direction of the heating element 20 relative to the composite pipe 10 is called the forward direction. The composite pipe 10 is in thermal contact with the heating element 20 to heat the fluid flowing inside the composite pipe 10. The heating element 20 can adopt heating methods such as electric heating or heating with heat media such as steam and hot oil, which is not limited in the present application. In some embodiments, the heating element 20 is an electric heating element, specifically an electric heating tube can be used.

[0043] Please refer to Figure 9 、 Figure 10 、 Figure 11 and Figure 12 , which respectively show the cross-sectional structure diagrams of the composite pipe 10 in different embodiments. The composite pipe 10 includes an inner pipe 11 for fluid to flow through and an outer pipe 12 sleeved outside the inner pipe 11. The inner pipe 11 and the outer pipe 12 have the same shape and are in mutual contact. Both the inner pipe 11 and the outer pipe 12 are provided with arched portions 13 that arch towards the heating element 20, and the arched portions 13 arch along the forward direction. Correspondingly, the heat-generating surface 21 of the heating element 20 is a structure that is recessed inward, that is, the heat-generating surface 21 is recessed along the forward direction. At least part of the heat-generating surface 21 of the heating element 20 is in contact with the arched surface 14 of the composite pipe 10, and the contact part is used to conduct the heat from the heating element 20 to the composite pipe 10 to form a heat-conducting surface.

[0044] The arch portion 13 can be formed by shaping a round pipe. In some embodiments, the inner pipe 11 and the outer pipe 12 can also be prefabricated with the structure of the arch portion 13 and then nested together. The heating element 20 can be directly fabricated in the form of a heat generating surface 21 that is recessed inward. In some embodiments, the inwardly recessed heat generating surface 21 can also be formed through a shaping process.

[0045] Compared with forming a flat surface through shaping, the pressure borne by the inner pipe 11 due to shaping will cause the center of the flat portion of the inner pipe 11 to bend inward. In this application, both the inner pipe 11 and the outer pipe 12 are provided with the arch portion 13, so the pressure borne by the inner pipe 11 due to shaping will be concentratedly released at the crown of the arch portion 13. This pressure will cause the inner pipe 11 and the outer pipe 12 to fit more tightly, thereby reducing the gap between the two pipes caused by shaping and ensuring sufficient heat transfer area.

[0046] In the composite pipe 10, the outer pipe 12 is in thermal contact with the heating element 20. Specifically, the arched surface 14 of the arch portion 13 of the outer pipe 12 is in thermal contact with the heat generating surface 21 of the heating element 20. Compared with a flat surface of the same projected area, the arched surface 14 has a larger surface area due to its outward arching. When the heating element 20 is in contact with the arched surface 14, the heat conduction area between the outer pipe 12 and the heating element 20 increases, improving the heating efficiency of the composite pipe 10. In addition, the arched surface 14 is a spatial surface. When the heating element 20 is in contact with the arched surface 14, the arched surface 14 plays a positioning function in the X, Y, and Z axes for the heating element 20, and can position the heating element 20 during the assembly of the composite pipe 10 and the heating element 20, thus eliminating the need for additional positioning tools.

[0047] In some embodiments, the portion of the composite pipe 10 facing the heating element 20 can be set to a convex structure to form the arch portion 13; in other embodiments, the composite pipe 10 can also be provided with multiple arch portions 13, and one of the arch portions 13 can be used for docking with the heating element 20; in still other embodiments, the composite pipe 10 can be set as a round pipe, as Figure 2 shown, and the arch portion 13 is formed by using the circular shape itself.

[0048] In some embodiments, the contour line of the arch portion 13 is a curve composed of more than one arc, as Figure 9 and Figure 12 shown. In other embodiments, the contour line of the arch portion 13 is a broken line composed of multiple straight lines, as Figure 10 and Figure 11 shown. In still other embodiments, the contour line of the arch portion 13 can also be a line type composed of more than one arc and more than one straight line. The specific structure of the contour line of the arch portion 13 is determined according to actual usage requirements, and this application does not make any restrictions. Unless otherwise specified, the "contour line" in this application refers to the contour line of the cross-section of this structure.

[0049] In some embodiments, the contour line of the remaining pipe segments 15 of the composite pipe 10 other than the arched portion 13 is a curve composed of more than one arc, such as Figure 11 and Figure 12 shown. In some other embodiments, the contour line of the remaining pipe segments 15 is a broken line composed of multiple straight lines, such as Figure 9 and Figure 10 shown. In still some other embodiments, the contour line of the remaining pipe segments 15 can also be a line type composed of more than one arc and more than one straight line. The specific structure of the contour line of the remaining pipe segments 15 is determined according to actual usage requirements, and this application does not make any restrictions.

[0050] In some embodiments, the composite pipe 10 is a non-circular pipe. That is to say, when the contour lines of both the arched portion 13 and the remaining pipe segments 15 are curves, the radii of curvature of the two curves are different. Such as Figure 12 shown.

[0051] In the composite pipe 10, the inner pipe 11 allows fluid to flow through. When the fluid heating assembly 100 is applied to food processing equipment, the inner pipe 11 should be made of food-grade materials; the outer pipe 12 is in contact with the heating element 20, conducts the heat generated by the heating element 20 from a part to the entire outer pipe 12, and finally transfers it to the inner pipe 11 and the fluid to be heated therein. Therefore, the outer pipe 12 should have good thermal conductivity. When selecting materials for the outer pipe 12 and the inner pipe 11, the above requirements should be met. They can both select materials that meet the above two requirements at the same time, or different materials can be selected.

[0052] In some embodiments, the material of the outer pipe 12 is different from that of the inner pipe 11. The thermal conductivity of the outer pipe 12 is greater than that of the inner pipe 11. The inner pipe 11 is a stainless steel pipe, and the outer pipe 12 can be an aluminum pipe, a copper pipe, or other metal pipes with a thermal conductivity greater than that of stainless steel. Aluminum pipes include both pure aluminum pipes and aluminum alloy pipes. Similarly, copper pipes include both pure copper pipes and copper alloy pipes.

[0053] Considering that the outer pipe 12 of the composite pipe 10 is welded to the heating element 20 during use, in order to ensure that the outer pipe 12 has sufficient strength to meet the welding requirements, requirements are put forward for the wall thickness of the outer pipe 12. In some embodiments, the thickness of the outer pipe 12 of the composite pipe 10 is greater than that of the inner pipe 11, and the ratio of the wall thickness of the outer pipe 12 to the wall thickness of the inner pipe 11 is 5:3 to 15:8. For example, the wall thickness of the outer pipe 12: the wall thickness of the inner pipe 11 can be 5:3, 10:7, 15:8, etc.

[0054] The wall thickness of the outer tube 12 has a direct impact on the heat transfer effect. If the outer tube 12 is too thick, it will affect heat transfer, causing excessive heat dissipation from the outer tube 12 and increasing heat loss. While if the outer tube 12 is too thin, it is prone to being welded through or having perforations during other processes. Additionally, it has been found that the wall thickness of the outer tube 12 and the inner tube 11 also affect the gap B between the two tubes during shaping. As the wall thickness of the outer tube 12 increases, the gap B between the two tubes also shows an increasing trend. However, when the wall thickness of the outer tube 12 decreases below a certain value, a new gap C will form on the lower side of the gap B between the two tubes during shaping, as Figure 3 shown.

[0055] Taking into account the heat transfer effect and the shaping effect comprehensively, in some embodiments, the wall thickness range of the outer tube 12 is 0.5 - 1.5 mm, such as 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.05 mm, 1.2 mm, 1.35 mm, 1.45 mm, etc.; the wall thickness range of the inner tube 11 is 0.3 - 0.8 mm, such as 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.75 mm, 0.8 mm, etc. In some embodiments, the wall thickness of the outer tube 12 is 0.75 mm and the wall thickness of the inner tube 11 is 0.4 mm. Under this wall thickness condition, the gap between the two tubes is the smallest (invisible to the naked eye), and it is beneficial to reduce the residual heat of the outer tube 12. The measured thermal efficiency of the composite pipeline 10 is high.

[0056] The heating element 20 is arranged outside the composite pipeline 10. The heating element 20 can be located on the same side outside the composite pipeline 10, or wound around the outer periphery of the composite pipeline 10. In some embodiments, the extending direction of the heating element 20 is the same as the extending direction of the composite pipeline 10, and the extending length of the heating element 20 is adapted to the extending length of the composite pipeline 10. The heating element 20 is arranged on the same side outside the composite pipeline 10. For example, in some embodiments, the composite pipeline 10 is bent as a whole into a U shape, and the heating element 20 is also bent into a U shape. The heating element 20 is arranged above the composite pipeline 10. The upper surface of the composite pipeline 10 is the arched surface 14, and the lower surface of the heating element 20 is the heating surface 21. Then, at this time, the extending length of the heating element 20 is the same as the extending length of the composite pipeline 10. For example, in some other embodiments, the composite pipeline 10 is bent as a whole into a ring shape, and the heating element 20 is also bent into a ring shape. The heating element 20 is arranged inside the ring of the composite pipeline 10. The inner side surface of the composite pipeline 10 is the arched surface 14, and the outer side surface of the heating element 20 is the heating surface 21. Then, at this time, the extending length of the heating element 20 is less than the extending length of the composite pipeline 10.

[0057] The entire or a portion of the surface of the heating surface 21 of the electric heating element 20 matches the arched surface 14 of the composite water pipe. The heating surface 21 and the arched surface 14 may be of the same shape but different size, or of different shape but the same size, or of the same shape and size. Considering heating efficiency, the overlap between the heating surface 21 of the heating element 20 and the arched surface 14 of the composite pipe 10 is greater than 50%, which is equivalent to the ratio of the area S of the heat transfer surface (the area of the contact portion between the heating surface 21 and the arched surface 14 * 2) to the sum of the areas S0 of the heating surface 21 and the arched surface 14 along the outer circumference of the cross section of the composite pipe 10 being greater than 50%.

[0058] In order to improve thermal efficiency, in some embodiments, the shape of the heating surface 21 of the heating element 20 matches the arched surface 14 of the composite pipe 10. For example, the cross-sectional profiles of the two are arc-shaped (with the same radius of curvature) or broken line-shaped (with the same angle). The heating surface 21 and the arched surface 14 are completely in contact with each other, with an overlap rate of 100%. Figure 4 , ​ , ​ , ​ and ​ The overlap rate of the fluid heating assembly 100 shown is 100%. ​ The fluid heating assembly 100 shown may be ​ The composite pipe 10 shown is ​ The heating element 20 shown is formed by combining ​ The fluid heating assembly 100 shown may be ​ The composite pipe 10 shown is ​ The heating element 20 shown is formed by combining ​ The fluid heating assembly 100 shown may be ​ The composite pipe 10 shown is ​ The heating element 20 shown is formed by combining ​ The fluid heating assembly 100 shown may be ​ The composite pipe 10 shown is ​ The heating element 20 shown is formed by combining ​ The fluid heating assembly 100 shown may be ​ The composite pipe 10 shown is ​ The heating element 20 is shown as being formed in combination.

[0059] The heating element 20 can adopt heating methods such as electric heating or heating with heat media such as steam and hot oil, and this application does not limit it. In some embodiments, the heating element 20 is an electric heating element, and specifically, an electric heating tube can be used. The heating element 20 is in thermal contact with the composite pipe 10. To ensure sufficient heat exchange between the heating element 20 and the composite pipe 10, a thermal conductive adhesive can be coated between the heating element 20 and the composite pipe 10 to fill the gap between them. In some embodiments, the heating element 20 and the composite pipe 10 are fixed by brazing.

[0060] Taking ​ the shown fluid heating assembly 100 as an example, in this embodiment, the heating element 20 and the composite pipe 10 are fixed by brazing. The manufacturing process of the fluid heating assembly 100 is as follows:

[0061] Expand the outer pipe 12 (such as heating the outer pipe 12), and / or shrink the inner pipe 11 (such as freezing the outer pipe 12); then nest and install the outer pipe 12 and the inner pipe 11, as ​ shown.

[0062] Shape the outer pipe 12 and the inner pipe 11 together after nested installation, and after shaping, obtain ​ the shown composite pipe 10.

[0063] Select ​ the shown heating element 20, place the heating element 20 in the forward direction of the composite pipe 10. Since the composite pipe 10 has an arch portion 13, the heating element 20 can be stably placed on the composite pipe 10. The heating surface 21 of the heating element 20 is completely attached to the arch surface 14 of the composite pipe 10.

[0064] Fix the heating element 20 and the composite pipe 10 by brazing to obtain ​ the shown fluid heating assembly 100.

[0065] In the embodiment of the second aspect of this application, a fluid processing device is provided. The fluid processing device includes the fluid heating assembly 100 of any embodiment of the first aspect above. The composite pipe 10 is a pipe for fluid to flow through in the fluid processing device; the fluid heating assembly 100 is used to heat the fluid during the flow process. The fluid processing device can be a coffee machine, a steam oven, an instant hot water dispenser, etc., which requires food requirements and products that can produce hot water or steam immediately.

[0066] In some embodiments, the fluid processing device is an instant hot water dispenser, which is configured with the fluid heating assembly 100 of any embodiment of the first aspect above. Since it can produce hot water immediately, it does not need to be configured with a hot water storage container and an electric heating wire in a conventional water dispenser, and the hot water is used immediately after production. Since there is no need to set up a hot water storage container, on the one hand, the volume of the water dispenser is reduced, and on the other hand, users do not need to clean the container regularly, and the user experience is good.

[0067] In some embodiments, the fluid processing device further includes a fluid storage device and a power element. The fluid storage device is used to store the fluid to be heated. The fluid is driven by the power element into the inner tube 11 of the fluid heating assembly 100, and the fluid is heated by the heat generated by the heating element 20 during the process of flowing through the inner tube 11, so as to obtain a hot fluid such as hot water or steam at the outlet of the fluid heating assembly 100.

[0068] In some embodiments, the fluid processing device is a coffee machine, and the coffee machine is configured with the above-mentioned fluid heating assembly 100. The fluid heating assembly 100 serves as a pipeline connecting the water pump outlet and the fluid outlet in the coffee machine. When making coffee, the water pump pumps water from the water tank to the inner tube 11 of the fluid heating assembly 100, and the water is heated into hot water or steam during the process of flowing through the inner tube 11, and the coffee powder can be directly brewed with hot water or coffee can be extracted by steam using a coffee capsule.

[0069] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0070] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application 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 should not be construed as a limitation to this application.

[0071] It should be noted that all the directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0072] In this application, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] In addition, in this application, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality" means two or more, unless otherwise clearly specifically limited.

[0074] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0075] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0076] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A fluid heating component, characterized in that, Comprising: A composite pipeline (10), the composite pipeline (10) includes an inner pipe (11) for fluid circulation and an outer pipe (12) sleeved outside the inner pipe (11), the inner pipe (11) and the outer pipe (12) have the same shape and are in mutual fit; both the inner pipe (11) and the outer pipe (12) are provided with arched portions (13) arched outward; A heating element (20), arranged on the outer side of the composite pipeline (10), the heating surface (21) of the heating element (20) has a structure sunken inward, and the heating surface (21) is at least partially in fit with the arched surface (14) of the arched portion (13) of the outer pipe (12) for heat conduction contact.

2. The fluid heating assembly according to claim 1, wherein, The contour line of the arched portion (13) is a curve composed of more than one arc, or a broken line composed of multiple straight lines, or a line type composed of more than one arc and more than one straight line.

3. The fluid heating assembly according to claim 2, wherein The contour line of the remaining pipe segments (15) of the composite pipeline (10) except the arched portion (13) is a curve composed of more than one arc, or a broken line composed of multiple straight lines.

4. The fluid heating assembly according to any one of claims 1-3, characterized in that, The material of the outer pipe (12) is different from that of the inner pipe (11); the thermal conductivity of the outer pipe (12) is greater than that of the inner pipe (11).

5. The fluid heating assembly according to any one of claims 1 to 3, characterized in that The wall thickness range of the outer pipe (12) is 0.5 - 1.5 mm; the wall thickness range of the inner pipe (11) is 0.3 - 0.8 mm.

6. The fluid heating assembly (100) according to claim 5, characterized in that, The wall thickness of the outer pipe (12) is 0.75 mm; the wall thickness of the inner pipe (11) is 0.4 mm.

7. The fluid heating assembly according to any one of claims 1-3, characterized in that, The ratio of the wall thickness of the outer pipe (12) to the wall thickness of the inner pipe (11) is 5:3 - 15:

8.

8. The fluid heating assembly according to any one of claims 1-3, characterized in that, The coincidence rate of the heating surface (21) of the heating element (20) and the arched surface (14) of the composite pipeline (10) is greater than 50%.

9. A fluid processing device, characterized in that, Comprising a fluid storage device, a power element, and a fluid heating assembly (100) according to any one of claims 1 - 8, the fluid stored in the fluid storage device is driven by the power element to enter the inner pipe (11) of the fluid heating assembly (100), and is heated by the heat of the heating element (20) during the process of flowing in the inner pipe (11).

10. The fluid treatment device according to claim 9, characterized in that, The fluid processing device is a coffee machine, a steam oven, or an instant hot water dispenser.

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