Heating device

Abstract

This invention discloses a heating device comprising a heating tube and a flow guide column. The flow guide column is housed within the inner cavity of the heating tube and forms a heating channel with the inner wall of the heating tube, enabling the heating tube to heat the liquid flowing through the heating channel. The flow guide column includes a column body and multiple flow-dispersing elements spaced along the axial direction of the column body. Each flow-dispersing element extends radially along the column body to guide the liquid in the radial direction of the column body. During heating, since each flow-dispersing element extends radially along the column body, it can guide the liquid in the radial direction of the column body, thereby disturbing the liquid flow and forming turbulence. Heat exchange occurs through the mixing of liquid particles, thereby eliminating the influence of the vapor film on the heat exchange performance through turbulence, thus improving the heating efficiency of the heating device.

Description

Technical Field

[0001] This invention relates to the field of heater technology, and more particularly to a heating device. Background Technology

[0002] An electric heater is an electrical appliance that uses electrical energy to achieve a heating effect. Under normal circumstances, the heating element of an electric heater can heat the water flowing inside. During heating, due to the Leidenfrost effect, the water undergoes film boiling, and an extremely thin vapor film is generated between the heating element wall and the water. The insulating nature of the vapor film makes heat exchange poor, so the water inside the heating element cannot be effectively heated, resulting in insufficient heating efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a heating device that addresses the problem of poor heat exchange between the heating element and water, resulting in insufficient heating efficiency in existing electric heaters.

[0004] The present invention provides a heating device, including a heating tube and a flow guide column. The flow guide column is housed in the inner cavity of the heating tube and surrounds the inner wall of the heating tube to form a heating channel, so that the heating tube can heat the liquid flowing through the heating channel.

[0005] The flow guide column includes a column body and a plurality of flow-dispersing elements spaced apart along the axial direction of the column body. Each flow-dispersing element extends radially along the column body to guide the liquid in the radial direction of the column body.

[0006] In one embodiment, the baffle is arranged around the column body, and each baffle divides the heating channel to form a plurality of heating chambers. Each baffle has a notch, and each notch connects two adjacent heating chambers.

[0007] In one embodiment, the notch of one of the spoilers is misaligned relative to the notches of its adjacent spoilers.

[0008] In one embodiment, each of the spoilers has a plurality of notches, and the notches are distributed at intervals along the circumference of each spoiler.

[0009] In one embodiment, each of the baffles includes a first ring and a second ring, both of which are annular. The first ring has a first notch and a second notch arranged opposite to each other, and the second ring has a third notch and a fourth notch arranged opposite to each other. The line connecting the first notch and the second notch is perpendicular to the line connecting the third notch and the fourth notch. Multiple first rings and second rings are provided and are alternately distributed along the axial direction of the column body.

[0010] In one embodiment, the guide column further includes an inlet cap and an outlet cap, which are respectively disposed at both ends of the column body;

[0011] The liquid inlet cap, the outer wall of the column body, the baffle and the inner wall of the heating tube form the liquid inlet cavity of the heating channel. The column body is provided with a liquid inlet channel, and a first opening and a second opening connected to the liquid inlet channel. The first opening is opened at the axial end of the column body, and the second opening is opened at the radial outer wall of the column body and is connected to the liquid inlet cavity.

[0012] In one embodiment, multiple second openings are provided and spaced apart on the circumferential outer wall of the column body; and / or

[0013] The liquid inlet cap is circumferentially disposed at the end of the column body. The liquid inlet cap has a third opening that communicates with the liquid inlet cavity. There are multiple third openings, which are distributed circumferentially at intervals on the liquid inlet cap.

[0014] In one embodiment, the liquid inlet cap and the liquid outlet cap have the same structure and are symmetrically arranged at both ends of the column body. The liquid outlet cap, together with the outer wall of the column body, the baffle and the inner wall of the heating tube, form the liquid outlet cavity of the heating channel.

[0015] The column body is provided with a liquid outlet channel, and a fourth opening and a fifth opening connected to the liquid outlet channel. The fourth opening is opened at the axial end of the column body, and the fifth opening is opened on the radial outer wall of the column body and is connected to the liquid outlet cavity.

[0016] In one embodiment, the heating device further includes a housing, an inlet connector, and an outlet connector. The two ends of the heating tube are respectively engaged with the inlet connector and the outlet connector to suspend the heating tube between the inlet connector and the outlet connector. The housing is fitted over the heating tube and connected to the inlet connector and the outlet connector respectively. The inner wall of the housing is spaced apart from the outer wall of the heating tube.

[0017] In one embodiment, the heating device further includes an inlet sealing ring and an outlet sealing ring. The inlet connector has a first mounting groove on the side facing the heating tube, and the inlet sealing ring is disposed in the first mounting groove. The inlet sealing ring has a first sealing groove on the side facing the heating tube. The outlet connector has a second mounting groove on the side facing the heating tube, and the outlet sealing ring is disposed in the second mounting groove. The outlet sealing ring has a second sealing groove on the side facing the heating tube. The two ends of the heating tube are elastically engaged in the first sealing groove and the second sealing groove, respectively.

[0018] The embodiments of the present invention have the following beneficial effects:

[0019] The heating device of the present invention has a flow guide column housed within the inner cavity of the heating tube and forming a heating channel with the inner wall of the heating tube, so that the heating tube can heat the liquid flowing through the heating channel. In specific heating operation, since each flow turbulence member extends radially along the column body, it can guide the liquid in the radial direction of the column body, thereby disturbing the liquid flow to form turbulence. Heat exchange is carried out through the mixing between liquid particles, thereby eliminating the influence of vapor film on heat exchange performance through turbulence, so as to improve the heating efficiency of the heating device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] in:

[0022] Figure 1 This is a schematic diagram of a heating device in one embodiment.

[0023] Figure 2 for Figure 1 Exploded view of the heating device shown.

[0024] Figure 3 for Figure 1 Front view of the heating device shown.

[0025] Figure 4 for Figure 3 Sectional view of AA.

[0026] Figure 5 for Figure 1 Half-section view of the heating device shown Figure 1 .

[0027] Figure 6 for Figure 1 Half-section view of the heating device shown Figure 2 .

[0028] Figure 7 for Figure 1 Half-section view of the heating device shown Figure 3 .

[0029] Figure 8 for Figure 1 A schematic diagram of the flow guide column in the heating device shown.

[0030] Figure 9 for Figure 8 Half-section view of the guide column shown Figure 1 .

[0031] Figure 10 for Figure 8 Half-section view of the guide column shown Figure 2 .

[0032] Figure 11 for Figure 8 The side view of the guide column shown.

[0033] Reference numerals: 100, Heating tube; 110, Heating channel; 111, Heating chamber; 112, Liquid outlet chamber; 113, Liquid inlet chamber; 200, Guide column; 210, Column body; 211, Liquid inlet channel; 212, First opening; 213, Second opening; 214, Liquid outlet channel; 215, Fourth opening; 216, Fifth opening; 220, Baffle; 221, First ring; 222, Second ring; 230, Liquid inlet end cap; 231, Third... 240. Opening; 241. Sixth opening; 250. Notch; 251. First notch; 252. Second notch; 253. Third notch; 254. Fourth notch; 300. Outer shell; 410. Inlet connector; 411. First mounting groove; 420. Outlet connector; 421. Second mounting groove; 510. Inlet sealing ring; 511. First sealing groove; 520. Outlet sealing ring; 521. Second sealing groove; 610. Mounting component. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this invention is 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, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0037] Leidenfrost effect: refers to the phenomenon where a liquid does not wet a hot surface, but only forms a vapor layer on it. Film boiling: refers to the phenomenon where a continuous vapor film forms on a heated wall surface, producing steam. Turbulence: also known as flow disturbance, is a fluid flow state. Characteristics of turbulence: Disorder: Fluid particles mix and move randomly, with random motion elements. Diffusivity: In addition to molecular diffusion, there are diffusion properties such as mass transfer, heat transfer, and momentum transfer caused by particle turbulence. Turbulence: Disrupts the stable flow state of a fluid, increasing its degree of turbulence.

[0038] This invention provides a heating device, which is mainly used for heating liquids. Please refer to [link to relevant documentation]. Figures 1 to 4 The heating device includes a heating tube 100 and a flow guide column 200. The flow guide column 200 is housed in the inner cavity of the heating tube 100 and forms a heating channel 110 with the inner wall of the heating tube 100, so that the heating tube 100 can heat the liquid flowing through the heating channel 110, thereby heating the liquid to a preset temperature.

[0039] In this embodiment, the guide column 200 includes a column body 210 and a plurality of flow disruptors 220 spaced apart along the axial direction of the column body 210. Each flow disruptor 220 extends radially along the column body 210 to guide the liquid along the radial direction of the column body 210, thereby disrupting the liquid flow and forming turbulence.

[0040] It is understandable that, due to the Leidenfrost effect, water undergoes film boiling, and an extremely thin vapor film is generated between the wall of the heating tube 100 and the water. The insulation of the vapor film makes heat exchange poor, so the water in the heating tube 100 cannot be effectively heated. When water flows through a smooth straight pipe or flows in a regular manner, it can be approximated as laminar flow. There is only energy exchange between adjacent fluid layers caused by molecular thermal motion, resulting in low heat transfer efficiency and thus insufficient heating efficiency.

[0041] In this embodiment, each turbulence-disrupting element 220 extends radially along the column body 210 in the heating device, thereby guiding the liquid to flow radially along the column body 210, thereby disrupting the liquid flow to form turbulence. Heat exchange is carried out through the mixing of liquid particles, thereby eliminating the influence of the vapor film on the heat exchange performance through turbulence. The heat transfer rate of turbulence is much greater than that of laminar flow, thereby improving the heating efficiency of the heating device.

[0042] Meanwhile, by improving the heat exchange efficiency of the heating tube 100, the wall surface of the heating tube 100 can be effectively cooled by the liquid, so that the wall temperature of the heating tube 100 can be controlled within a preset range, thereby reducing the risk of the heating tube 100 being burned out.

[0043] In this embodiment, the guide column 200 is a structural component made of PPSU material. PPSU material has excellent high temperature resistance, corrosion resistance, heat oxidation resistance, creep resistance, non-toxicity, good insulation, and is easy to mold and process.

[0044] In one embodiment, please refer to the following: Figure 8 The flow-deflecting element 220 is arranged around the column body 210. Each flow-deflecting element 220 divides the heating channel 110 into multiple heating chambers 111. Each flow-deflecting element 220 has a notch 250, and each notch 250 connects two adjacent heating chambers 111. Through the arrangement of the notches 250, the heating chambers 111 can be connected sequentially to form the heating channel 110.

[0045] Furthermore, in this embodiment, please refer to sections 4 to 5. Figure 7 The notch 250 of a flow disruptor 220 is offset from the notch 250 of its adjacent flow disruptor 220. The liquid flows generally axially as it passes through the notch 250. After the liquid flows to the flow disruptor 220, it can guide the liquid along the radial direction of the column body 210, thereby disturbing the liquid flow and forming turbulence. This can disturb the liquid flow in each heating chamber 111 and form turbulence.

[0046] Furthermore, in this embodiment, please refer to Figures 4 to 10Each flow-dispersing component 220 has multiple notches 250, which are distributed circumferentially on each flow-dispersing component 220. This allows adjacent heating chambers 111 to be connected through the multiple notches 250. As a result, liquid can flow from one heating chamber 111 to its adjacent heating chamber through the multiple notches 250, generating multiple liquid flows. After flowing to the flow-dispersing component 220, the multiple liquid flows can be guided along the radial direction of the column body 210, thereby increasing the disturbance effect of the liquid flow.

[0047] The flow guide column 200 structure in this embodiment can improve the turbulence of the liquid flow, minimize the impact of the Leidenfrost effect on heating, protect the heating tube 100 from burning out, and at the same time, the liquid water flow in the heating tube 100 forms sufficient turbulence, improving heating efficiency and temperature uniformity.

[0048] In this embodiment, each baffle 220 can have multiple configuration methods, and the specific configuration of each baffle 220 can be configured according to the specific configuration requirements of the heating device.

[0049] In one implementation, please refer to Figures 4 to 10 Each flow-disrupting component 220 includes a first ring component 221 and a second ring component 222. Both the first ring component 221 and the second ring component 222 are annular. The first ring component 221 has a first notch 251 and a second notch 252 arranged opposite to each other. The second ring component 222 has a third notch 253 and a fourth notch 254 arranged opposite to each other. The line connecting the first notch 251 and the second notch 252 is perpendicular to the line connecting the third notch 253 and the fourth notch 254. There are multiple first ring components 221 and the second ring component 222, which are alternately distributed along the axial direction of the column body 210. Through the above arrangement, each notch 250 can connect two adjacent heating chambers 111. At the same time, after the liquid flows to the flow-disrupting component 220, it can guide the liquid along the radial direction of the column body 210, thereby disturbing the liquid flow and forming turbulence.

[0050] In this embodiment, the line connecting the first notch 251 and the second notch 252 is perpendicular to the line connecting the third notch 253 and the fourth notch 254. Therefore, the liquid flows from one notch 250 to the next, causing radial separation and rotation of the liquid flow. This allows for thorough mixing of the radial liquid particles between adjacent turbulent elements 220. Through this process, axial and radial mixing occurs between the liquid particles, generating turbulence with high turbulence at a relatively low flow velocity, resulting in a more uniform temperature within the heating tube 100. Simultaneously, the formation of turbulence disrupts the boundary layer, allowing heat from the heating tube 100 wall to be transferred more quickly to the middle section, reducing the temperature of the liquid particles in contact with the tube wall. This effectively cools the heating tube 100 wall, keeping it below the Leidenfrost characteristic of water, effectively preventing film boiling. This improves heating efficiency and reduces the wall temperature of the heating tube 100, minimizing the risk of burnout.

[0051] In another embodiment, each spoiler 220 includes a first ring 221, a second ring 222, and a third ring. The first ring 221 has a first notch 251 and a second notch 252 disposed opposite to each other. The second ring 222 has a third notch 253 and a fourth notch 254 disposed opposite to each other. The third ring has a fifth notch 250 and a sixth notch 250 disposed opposite to each other. The first notch 251 and the second notch 252 of the first ring 221, the third notch 253 and the fourth notch 254 of the second ring 222, and the fifth notch 250 and the sixth notch 250 of the third ring are staggered with each other. Of course, in other embodiments, each spoiler 220 may also include a fourth ring.

[0052] In another embodiment, each spoiler 220 includes a first ring 221 and a second ring 222. The first ring 221 has three notches 250, and the second ring 222 has three notches 250. The three notches 250 of the first ring 221 and the three notches 250 of the second ring 222 are staggered. Of course, in other embodiments, the first ring 221 may also have four or more notches 250, and the number of notches 250 in the second ring 222 may be the same as or different from the number of notches 250 in the first ring 221.

[0053] In one embodiment, please refer to Figures 4 to 11The guide column 200 also includes an inlet cap 230 and an outlet cap 240, which are respectively disposed at both ends of the column body 210. The inlet cap 230, together with the outer wall of the column body 210, the flow-deflecting member 220, and the inner wall of the heating tube 100, forms the inlet cavity 113 of the heating channel 110. The column body 210 is provided with an inlet channel 211, and a first opening 212 and a second opening 213 connected to the inlet channel 211. The first opening 212 is opened at the axial end of the column body 210, and the second opening 213 is opened at the radial outer wall of the column body 210 and connected to the inlet cavity 113. With the above arrangement, liquid can flow into the inlet cavity 113 in the radial direction, which facilitates the liquid to flow to the inner wall of the heating tube 100 and to collide with the inner wall of the heating tube 100 to generate turbulence.

[0054] Furthermore, in this embodiment, multiple second openings 213 are provided and distributed at intervals on the circumferential outer wall of the column body 210. By providing multiple second openings 213, multiple liquid flows can be provided simultaneously, thereby making the liquid flow more turbulent in the liquid inlet chamber 113.

[0055] Furthermore, in this embodiment, the liquid inlet cap 230 is circumferentially disposed at the end of the column body 210. The liquid inlet cap 230 has a third opening 231 communicating with the liquid inlet chamber 113. Multiple third openings 231 are provided and distributed circumferentially around the liquid inlet cap 230. Through this arrangement, a portion of the liquid can be axially transported into the liquid inlet chamber 113 and collide with the radially flowing liquid within the liquid inlet chamber 113, thereby increasing the turbulence of the liquid within the liquid inlet chamber 113.

[0056] Preferably, the liquid inlet cap 230 and the liquid outlet cap 240 have the same structure and are symmetrically arranged at both ends of the column body 210, which facilitates the production and assembly of the liquid inlet cap 230 and the liquid outlet cap 240 and reduces production and assembly costs.

[0057] Specifically, the liquid outlet cap 240, the outer wall of the column body 210, the baffle 220, and the inner wall of the heating tube 100 enclose the liquid outlet cavity 112 of the heating channel 110; the column body 210 is provided with a liquid outlet channel 214, and a fourth opening 215 and a fifth opening 216 connected to the liquid outlet channel 214. The fourth opening 215 is opened at the axial end of the column body 210, and the fifth opening 216 is opened on the radial outer wall of the column body 210 and connected to the liquid outlet cavity 112, so that liquid can be output through the fifth opening 216 and the fourth opening 215.

[0058] Meanwhile, the liquid outlet cap 240 is circumferentially disposed at the end of the column body 210, and the liquid outlet end is provided with a sixth opening 241 that communicates with the liquid outlet chamber 112. There are multiple sixth openings 241, which are distributed circumferentially around the liquid outlet cap 240, so that liquid can be output through the sixth opening 241.

[0059] Of course, in other embodiments, the structures of the liquid inlet cap 230 and the liquid outlet cap 240 may be different. The specific structural settings of the liquid inlet cap 230 and the liquid outlet cap 240 can be adjusted according to the specific production and assembly needs of the heating device.

[0060] In one embodiment, please refer to Figures 1 to 4 The heating device also includes a housing 300, an inlet connector 410, and an outlet connector 420. The two ends of the heating tube 100 are respectively engaged with the inlet connector 410 and the outlet connector 420 to suspend the heating tube 100 between the inlet connector 410 and the outlet connector 420. The housing 300 is fitted over the heating tube 100 and connected to the inlet connector 410 and the outlet connector 420 respectively. The inner wall of the housing 300 is spaced apart from the outer wall of the heating tube 100 to integrate the heating tube 100, the guide column 200, the inlet connector 410, and the outlet connector 420 onto the housing 300, thereby forming a modular heating device that is convenient for external assembly.

[0061] Through the above assembly setup, the guide column 200 can be easily and precisely assembled inside the heating tube 100, the outer shell 300 can be fitted onto the outside of the heating tube 100, and finally the inlet connector 410 and outlet connector 420 can be assembled at both ends of the heating tube 100. Assembly is convenient, and the installation of the heating device is time-saving and labor-saving, facilitating large-scale manufacturing of the heating device. Specifically, the guide column 200 is coaxially arranged with the heating tube 100, the inlet connector 410, and the outlet connector 420, thereby facilitating the coaxial assembly of the relevant components.

[0062] Furthermore, in this embodiment, the heating device also includes an inlet sealing ring 510 and an outlet sealing ring 520. The inlet connector 410 has a first mounting groove 411 on the side facing the heating tube 100, and the inlet sealing ring 510 is disposed in the first mounting groove 411. The inlet sealing ring 510 has a first sealing groove 511 on the side facing the heating tube 100. The outlet connector 420 has a second mounting groove 421 on the side facing the heating tube 100, and the outlet sealing ring 520 is disposed in the second mounting groove 421. The outlet sealing ring 520 has a second sealing groove 521 on the side facing the heating tube 100. The two ends of the heating tube 100 are elastically engaged in the first sealing groove 511 and the second sealing groove 521, respectively, thereby realizing the sealed assembly of the heating tube 100 with the inlet connector 410 and the outlet connector 420.

[0063] During assembly, the guide column 200 is first assembled inside the heating tube 100. Then, the inlet sealing ring 510 and the outlet sealing ring 520 are respectively snapped onto both ends of the heating tube 100. Next, the aforementioned structural unit is assembled into the outer casing 300. Finally, the inlet connector 410 and the outlet connector 420 are respectively installed at both ends of the outer casing 300. Simultaneously, the inlet connector 410 and the outlet connector 420 can engage with the inlet sealing ring 510 and the outlet sealing ring 520 respectively, clamping the heating tube 100, the inlet sealing ring 510, and the outlet sealing ring 520 between the inlet connector 410 and the outlet connector 420. At this time, the guide column 200 can be clamped within the heating tube 100 by the inlet sealing ring 510 and the outlet sealing ring 520, achieving stable assembly of the guide column 200. The heating device of this embodiment has a simple structure, is easy to process, and is simple to install.

[0064] In this embodiment, the heating device further includes mounting members 610. The inlet connector 410 and the outlet connector 420 are respectively fixed to both ends of the housing 300 via the mounting members 610. The mounting members 610 can be screws or studs. Furthermore, multiple mounting members 610 can be provided and distributed circumferentially at intervals around the inlet connector 410 and the outlet connector 420, thereby ensuring the stability and reliability of the inlet connector 410 and the outlet connector 420 on the housing 300. Specifically, eight mounting members 610 can be provided, allowing the inlet connector 410 to be installed via four mounting members 610 and the outlet connector 420 to be installed via four mounting members 610. Of course, in other embodiments, six, ten, or more mounting members 610 can also be provided.

[0065] During actual heating operation, the heating device is placed vertically, with the liquid outlet 420 positioned higher than the liquid inlet 410. Liquid is input from the liquid inlet 410, and part of the liquid enters the heating channel 110 through the third opening 231, while the other part enters the heating channel 110 through the first opening 212 and the second opening 213. As the liquid flows upward and axially within the heating channel 110, it is blocked by the flow-disrupting element 220 and flows upward and axially from the gap 250. Because the gaps 250 of the adjacent flow-disrupting elements 220 are staggered, the liquid flowing through the gap 250 will be blocked by the next flow-disrupting element 220, thus forming an axial vortex.

[0066] Simultaneously, as the fluid pump continuously drives the liquid in, the liquid flow continuously flows upward and axially through each gap 250. Therefore, the actual flow trajectory of the liquid is an axial vortex, as well as a mixing of liquid flowing from one gap 250 to the next. The axial vortex ensures thorough mixing of liquid particles axially between adjacent turbulence elements 220. In this embodiment, the fluid pump can be selected as a water pump.

[0067] In this embodiment, the liquid can be selected from water, milk, coffee, etc. The heating device of this embodiment can be applied to hot beverage equipment such as instant water dispensers, instant coffee machines, instant water heaters, and instant milk warmers.

[0068] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A heating device, characterized in that, It includes a heating tube and a flow guide column. The flow guide column is housed in the inner cavity of the heating tube and forms a heating channel with the inner wall of the heating tube, so that the heating tube can heat the liquid flowing through the heating channel. The flow guide column includes a column body and a plurality of flow-dispersing elements spaced apart along the axial direction of the column body. Each flow-dispersing element extends radially along the column body to guide the liquid in the radial direction of the column body. The baffle is arranged around the column body, and each baffle divides the heating channel to form multiple heating chambers. Each baffle has a notch, and each notch connects two adjacent heating chambers. The guide column also includes an inlet end cap and an outlet end cap, which are respectively disposed at both ends of the column body; The liquid inlet cap, the outer wall of the column body, the baffle and the inner wall of the heating tube form the liquid inlet cavity of the heating channel. The column body is provided with a liquid inlet channel, and a first opening and a second opening connected to the liquid inlet channel. The first opening is opened at the axial end of the column body, and the second opening is opened at the radial outer wall of the column body and connected to the liquid inlet cavity. The second opening is provided in multiple parts and is distributed at intervals on the circumferential outer wall of the column body; The liquid inlet cap is circumferentially disposed at the end of the column body. The liquid inlet cap has a third opening that communicates with the liquid inlet chamber. There are multiple third openings, which are distributed circumferentially at intervals on the liquid inlet cap. The liquid inlet cap and the liquid outlet cap have the same structure and are symmetrically arranged at both ends of the column body. The liquid outlet cap, together with the outer wall of the column body, the baffle and the inner wall of the heating tube, form the liquid outlet cavity of the heating channel. The column body is provided with a liquid outlet channel, and a fourth opening and a fifth opening connected to the liquid outlet channel. The fourth opening is opened at the axial end of the column body, and the fifth opening is opened on the radial outer wall of the column body and is connected to the liquid outlet cavity.

2. The heating device according to claim 1, characterized in that, The notch of one of the spoilers is misaligned relative to the notches of its adjacent spoilers.

3. The heating device according to claim 1, characterized in that, Each of the aforementioned spoilers has multiple notches, and the notches are distributed at intervals along the circumference of each spoiler.

4. The heating device according to claim 3, characterized in that, Each of the aforementioned baffles includes a first ring and a second ring. Both the first ring and the second ring are circular. The first ring has a first notch and a second notch arranged opposite to each other. The second ring has a third notch and a fourth notch arranged opposite to each other. The line connecting the first notch and the second notch is perpendicular to the line connecting the third notch and the fourth notch. Multiple first rings and second rings are provided and are alternately distributed along the axial direction of the column body.

5. The heating device according to claim 1, characterized in that, The heating device further includes a housing, an inlet connector, and an outlet connector. The two ends of the heating tube are respectively engaged with the inlet connector and the outlet connector to suspend the heating tube between the inlet connector and the outlet connector. The housing is fitted over the heating tube and is connected to the inlet connector and the outlet connector respectively. The inner wall of the housing is spaced apart from the outer wall of the heating tube.

6. The heating device according to claim 5, characterized in that, The heating device further includes an inlet sealing ring and an outlet sealing ring. The inlet connector has a first mounting groove on the side facing the heating tube, and the inlet sealing ring is disposed in the first mounting groove. The inlet sealing ring has a first sealing groove on the side facing the heating tube. The outlet connector has a second mounting groove on the side facing the heating tube, and the outlet sealing ring is disposed in the second mounting groove. The outlet sealing ring has a second sealing groove on the side facing the heating tube. The two ends of the heating tube are elastically engaged in the first sealing groove and the second sealing groove, respectively.

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