Heating device

By combining induction heating and heat pipes, the problem of a single heating method is solved, enabling flexible selection of heating methods and efficient processing flow, which is suitable for thermoforming.

CN223856174UActive Publication Date: 2026-01-30SHANGHAI CHUANGYUAN COSMETICS
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Patent Information

Application Number
CN202520059821.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2026-01-30
Estimated Expiration
2035-01-10

AI Technical Summary

Technical Problem

Existing heating furnaces use a single heating method, resulting in inflexible heating methods, discontinuous processing, and low efficiency.

Method used

The heating device includes a connecting component, a first heating component, and a second heating component. It provides multiple heating methods through a combination of induction heating and heat conduction pipes. The component is moved by a movable plate to achieve flexible position adjustment and direct material feeding into the mold.

Benefits of technology

It enables flexible selection of multiple heating methods, improves processing efficiency, and allows for continuous processing where materials are heated and then directly enter the mold.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a heating device, comprising: a connecting assembly comprising a connecting plate and a movable plate movably connected with the connecting plate; the first heating assembly is connected with the movable plate; the first heating assembly heats an object entering the first heating assembly in an induction heating mode. The second heating assembly is connected with the movable plate; the second heating assembly and the first heating assembly are arranged at a certain distance; the second heating assembly comprises a heat conduction pipe, a heating body, a shell and a temperature collection structure. The heat conduction pipe is provided with a through hole for an object to pass through; the heating body is sleeved outside the heat conduction pipe; the shell is sleeved outside the heating body; a clearance space exists between the inner wall surface of the shell and the outer wall surface of the heating body; and the temperature collection structure is sleeved in the clearance space. When the movable plate moves relative to the connecting plate, the first heating assembly and the second heating assembly are driven to move synchronously. According to the heating device provided by the invention, multiple heating modes are provided, and a user can flexibly select according to heating requirements.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heating equipment, and particularly relates to a heating device. BACKGROUND

[0002] Hot forming is a processing method that heats a material block to a temperature range above a softening point and below a melting temperature, and then makes the material block adhere to a mold profile under the action of external force (such as air pressure, mechanical pressure, etc.), to obtain a product with a required shape after cooling.

[0003] In hot forming, the material block needs to be preheated. In the prior art, the material block is first heated to a preset temperature in a heating furnace, and then the material block is taken out of the heating furnace and placed in a mold for subsequent processing. The existing heating furnace has the problems of single heating mode, inflexible heating mode, discontinuous processing method operation process, and slow operation efficiency. SUMMARY

[0004] The present application aims to provide a heating device, which aims to solve the technical problems of single heating mode and inflexible heating mode in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a heating device, comprising:

[0006] A connecting assembly comprising a connecting plate and a movable plate movably connected to the connecting plate;

[0007] A first heating assembly connected to the movable plate; the first heating assembly heats an object entering the first heating assembly by an induction heating mode;

[0008] A second heating assembly connected to the movable plate; the second heating assembly is arranged at a certain distance from the first heating assembly; the second heating assembly comprises a heat pipe, a heating body, a shell, and a temperature collecting structure; the heat pipe is provided with a through hole for the object to pass through; the heating body is sleeved outside the heat pipe; the heating body heats the heat pipe when in an operating state; the shell is sleeved outside the heating body; there is a gap space between the inner wall surface of the shell and the outer wall surface of the heating body; the temperature collecting structure is sleeved in the gap space.

[0009] When the movable plate moves relative to the connecting plate, the first heating assembly and the second heating assembly are driven to move synchronously.

[0010] Preferably, the movable plate can produce reciprocating motion transversely relative to the connecting plate.

[0011] Preferably, the second heating assembly further comprises: a valve body assembly arranged on the shell; the valve body assembly is in communication with the gap space; and the valve body assembly is used to extract gas in the gap space.

[0012] Preferably, the shell comprises:

[0013] A shell body is sleeved outside the heating body;

[0014] A first air inlet disc is arranged at one end of the shell body; the first air inlet disc is in contact with one end of the temperature collecting structure;

[0015] A first flow guide pipe seat is connected at one end with the end of the first air inlet disc away from the shell body; and the other end is an open end;

[0016] A second flow guide pipe seat is arranged at the other end of the shell body;

[0017] A cooling disc is arranged at the other end of the shell body; the cooling disc is sleeved outside the second flow guide pipe seat;

[0018] A second air inlet disc is connected with the end surface of the cooling disc away from the shell body.

[0019] Preferably, the shell body comprises:

[0020] An inner layer shell is sleeved outside the temperature collecting structure;

[0021] An outer layer shell is sleeved outside the inner layer shell; the upper and lower ends of the outer layer shell are respectively sealed and connected with the upper and lower ends of the inner layer shell through connecting parts; there is a sealed gap between the outer layer shell and the inner layer shell, and the sealed gap is filled with inert gas or is in a vacuum state.

[0022] Preferably, the second heating assembly further comprises: a temperature measuring assembly connected with the shell and used to measure the temperature of the gap space.

[0023] Preferably, the second heating assembly further comprises: a vacuum cover detachably connected with the shell; when the vacuum cover is connected with the end of the shell, the two ends of the heat conducting pipe are blocked.

[0024] Preferably, one end of the shell is connected with the vacuum cover through a connecting pipe.

[0025] Preferably, the first heating assembly comprises:

[0026] A heating pipe is provided with a through hole penetrating through the heating pipe in the height direction;

[0027] A second shell is sleeved outside the heating pipe;

[0028] The heating assembly comprises an induction heating coil arranged in the heating pipe, a connecting body connected with the second shell, and a power supply structure connected with the connecting body. When the power supply structure is in operation, the induction heating coil heats the object inserted into the through hole.

[0029] Preferably, a plurality of partitions are arranged in the heating pipe along the height direction; the partitions are used to divide the internal space of the heating pipe into a plurality of areas.

[0030] The heating device provided by the application has the advantages that: compared with the prior art, the heating device provided by the application provides multiple heating modes through the arrangement of the first heating assembly and the second heating assembly, the user can flexibly select according to the heating needs, and the application range of the device can be effectively expanded. The arrangement of the connecting assembly can facilitate the movement of the relative positions of the first heating assembly and the second heating assembly. The first heating assembly and the second heating assembly are respectively provided with through holes in the axial direction, and can heat the areas in the through holes. The device can directly transport the heated materials into the mold after the heating operation of the materials is completed, and the processing efficiency can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The structure of the heating device provided by the embodiment of the application is shown in the figure Figure 1 ;

[0033] Figure 2 The structure of the heating device provided by the embodiment of the application is shown in the figure Figure 2 ;

[0034] Figure 3 The structure of the heating device provided by the embodiment of the application is shown in the figure Figure 3 ;

[0035] Figure 4 The structure of the heating device provided by the embodiment of the application is shown in the figure Figure 4 ;

[0036] Figure 5 The relative state between the first heating assembly and the second heating assembly in the heating device provided by the embodiment of the application is shown in the figure

[0037] Figure 6Structure diagram of a first heating assembly adopted by a heating device provided by an embodiment of the present application Figure 1 ;

[0038] Figure 7 Structure diagram of a first heating assembly adopted by a heating device provided by an embodiment of the present application Figure 2 ;

[0039] Figure 8 Structure diagram of a first heating assembly adopted by a heating device provided by an embodiment of the present application Figure 3 ;

[0040] Figure 9 For Figure 8 Structure diagram along A-A line.

[0041] Figure 10 Structure diagram of a second heating assembly adopted by a heating device provided by an embodiment of the present application Figure 1 ;

[0042] Figure 11 Structure diagram of a second heating assembly adopted by a heating device provided by an embodiment of the present application Figure 2 ;

[0043] Figure 12 For Figure 11 Structure diagram along B-B line.

[0044] In the figure: 1, connecting assembly; 11, connecting plate; 12, movable plate; 2, first heating assembly; 21, second shell; 211, third through hole; 22, heating assembly; 221, induction heating coil; 222, connecting body; 23, heating pipe; 231, through hole; 232, partition plate; 233, second through hole; 3, second heating assembly; 31, heat conduction pipe; 32, heating body; 33, shell; 331, shell main body; 332, first air inlet disc; 333, first flow guide pipe seat; 334, second flow guide pipe seat; 335, cooling disc; 336, second air inlet disc; 34, temperature collecting structure; 35, valve body assembly; 36, vacuum cover; 37, temperature measuring assembly; 38, flow guide sleeve; 39, connecting pipe. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0046] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0047] Referring to Figures 1 to 12 A heating device provided by the present application will now be described. The heating device comprises a connecting assembly 1, a first heating assembly 2, and a second heating assembly 3. The connecting assembly 1 comprises a connecting plate 11 and a movable plate 12 movably connected to the connecting plate 11. The first heating assembly 2 is connected to the movable plate 12. The first heating assembly 2 heats objects entering the first heating assembly 2 by induction heating. The second heating assembly 3 is connected to the movable plate 12. The second heating assembly 3 is spaced apart from the first heating assembly 2 by a certain distance. The second heating assembly 3 comprises a heat-conducting pipe 31, a heating body 32, a shell 33, and a heat-collecting structure 34. The heat-conducting pipe 31 is provided with a through hole for the objects to pass through. The through hole extends through the heat-conducting pipe 31 along the axial direction. The heating body 32 is sleeved outside the heat-conducting pipe 31. The heating body 32 heats the heat-conducting pipe 31 when it is in an operating state. The shell 33 is sleeved outside the heating body 32. There is a gap space between the inner wall surface of the shell 33 and the outer wall surface of the heating body 32. The heat-collecting structure 34 is sleeved in the gap space. The heat-collecting structure 34 collects and preserves the heat generated by the heating body 32. When the movable plate 12 moves relative to the connecting plate 11, it drives the first heating assembly 2 and the second heating assembly 3 to move synchronously.

[0048] As a specific embodiment of the present application, referring to Figures 1 to 5 The movable plate 12 is an "L"-shaped plate body. The movable plate 12 comprises a side plate and a transverse plate connected to one end of the side plate. The side plate is slidably connected to the connecting plate 11. The movable plate 12 can move reciprocally along the transverse direction relative to the connecting plate 11. The transverse plate is provided with a first connecting position for connecting and fixing the first heating assembly 2. The transverse plate is provided with a second connecting position for connecting and fixing the second heating assembly 3. The first connecting position and the second connecting position are spaced apart by a certain distance. In any realizable embodiment, the side plate is provided with a sliding block at the upper end and the lower end of the side surface, respectively. The connecting plate 11 is provided with a sliding groove adapted to the sliding block at the upper end and the lower end, respectively. The movable plate 12 can move relative to the connecting plate 11 along the transverse direction through the cooperation of the sliding block and the sliding groove. The first connecting position and the second connecting position are both mounting hole structures.

[0049] As a specific embodiment of the present application, refer to Figures 1 to 12 The second heating assembly 3 further comprises a valve assembly 35 arranged on the shell 33, the valve assembly 35 being in communication with the gap space, and the valve assembly 35 being used to extract the gas in the gap space. In any possible embodiment, the valve assembly 35 is a vacuum valve, the vacuum valve being connected with the shell 33, one end of the vacuum valve extending into the gap space, and the gas in the gap space being extracted through the operation of the vacuum valve, so that the gap space is in a vacuum state, and the invalid loss of heat can be effectively reduced.

[0050] In some possible embodiments, the heating body 32 is in a cylindrical structure. The heating body 32 is sleeved outside the heat conduction pipe 31. The axis of the heating body 32 coincides with the axis of the heat conduction pipe 31. The upper end of the heating body 32 is in sealing contact with the outer side surface of the heat conduction pipe 31. The lower end of the heating body 32 is in sealing contact with the outer side surface of the heat conduction pipe 31. The heating body 32 is connected with an energizing assembly, the energizing assembly comprising an electric plate connected with the heating body 32 and a power supply structure connected with the electric plate. The power supply structure is energized to supply power to the heating body 32 through the electric plate, so that the heating body 32 generates heat.

[0051] In some possible embodiments, the shell 33 comprises a shell body 331 sleeved outside the heating body 32, a first air inlet disc 332 arranged at one end of the shell body 331, the first air inlet disc 332 being in contact with one end of the temperature collecting structure 34, a first flow guide pipe base 333 connected with one end of the first air inlet disc 332 away from the shell body 331, the other end being an open end, a second flow guide pipe base 334 arranged at the other end of the shell body 331, a cooling disc 335 arranged at the other end of the shell body 331, the cooling disc 335 being sleeved outside the second flow guide pipe base 334, and a second air inlet disc 336 connected with the end surface of the cooling disc 335 away from the shell body 331.

[0052] In some possible embodiments, the shell body 331 comprises an inner layer shell sleeved outside the temperature collecting structure 34 and an outer layer shell sleeved outside the inner layer shell, the upper and lower ends of the outer layer shell being sealingly connected with the upper and lower ends of the inner layer shell through connecting portions, respectively, and there being a sealing gap between the outer layer shell and the inner layer shell, the sealing gap being filled with inert gas or being in a vacuum state. The structure of the shell body 331 can effectively reduce the heat loss efficiency.

[0053] In some possible embodiments, the first air inlet disc 332 is in communication with the gap space, the first air inlet disc 332 is connected with a first external connecting pipeline, and the first external connecting pipeline is connected with a gas pump structure. When the gas pump structure is operated, the gas can be supplied to the first air inlet disc 332 through the first external connecting pipeline, and the gas can finally enter the gap space.

[0054] The second air inlet disc 336 is in communication with the gap space, the first air inlet disc 332 is connected with a second external connecting pipeline, and the second external connecting pipeline is connected with the air pump structure. When the air pump structure is in operation, the second external connecting pipeline can supply air to the second air inlet disc 336, and the air can finally enter the gap space.

[0055] The cooling disc 335 is provided with a plurality of cooling channels, and the cooling channels are connected with a refrigeration structure through a third external connecting pipeline. The refrigeration structure injects refrigerant into the cooling channels through the third external connecting pipeline, and drives the refrigerant to circulate, so as to cool the device.

[0056] In some implementable embodiments, the temperature collecting structure 34 is a cylindrical structure. The cylindrical structure is sleeved outside the heating body 32. The axis of the temperature collecting structure 34 coincides with the axis of the heat conduction pipe 31. The material of the temperature collecting structure 34 is graphite. The cylindrical structure is provided with a communication hole penetrating through the cylindrical structure in the radial direction. The communication hole is arranged to facilitate the valve body assembly 35 to quickly extract the gas in the gap space.

[0057] As a specific embodiment of the present application, the second heating assembly 3 further comprises: a vacuum cover 36, which is detachably connected with the shell 33. The vacuum cover 36 is provided with two groups. When the vacuum cover 36 is connected with the two ends of the shell 33 respectively, the two ends of the heat conduction pipe 31 are blocked.

[0058] In some implementable embodiments, the first flow guide pipe seat 333 is connected with the vacuum cover 36 through a connecting pipe 39. That is, the end of the first flow guide pipe seat 333 away from the first air inlet disc 332 is connected with the connecting pipe 39, and the end of the connecting pipe 39 away from the first flow guide pipe seat 333 is detachably connected with the vacuum cover 36. The connecting pipe 39 can be connected and fixed with an external structure. Specifically, the connecting pipe 39 is matched with the second connecting position. Through the connection and fixation of the connecting pipe 39 and the external structure, the graphite furnace is fixed on the external structure.

[0059] As a specific embodiment of the present application, the second heating assembly 3 further comprises: a temperature measuring assembly 37 connected with the shell 33, and one end of the temperature measuring assembly 37 extends into the gap space. The temperature measuring assembly 37 is used for measuring the temperature of the gap space.

[0060] As a specific embodiment of the present application, with reference to Figures 1 to 5 , the second heating assembly 3 further comprises: a flow guide sleeve 38, one end of which extends into the heat conduction pipe 31, and the other end of which is connected with the first flow guide pipe seat 333.

[0061] As a specific embodiment of the present application, with reference to Figures 1 to 9The first heating assembly 2 comprises a heating pipe 23, a second shell 21 and a heating assembly 22. The heating pipe 23 is provided with a through hole 231 penetrating the heating pipe 23 along the height direction. The second shell 21 is sleeved outside the heating pipe 23. The heating assembly 22 comprises an induction heating coil 221 arranged in the heating pipe 23 and a connecting body 222 connected with the second shell 21. One end of the connecting body 222 penetrates the heating pipe 23 and is connected with the induction heating coil 221, and the other end is connected with the energy supply structure. When the energy supply structure is in operation, the induction heating coil 221 performs non-contact heating on the object inserted into the through hole 231.

[0062] In some implementable embodiments, the connecting body 222 comprises a first connecting part and a second connecting part arranged at a certain distance from the first connecting part. One end of the first connecting part is connected with one end of the induction heating coil, and the other end is electrically connected with the energy supply structure. One end of the second connecting part is connected with the other end of the induction heating coil, and the other end is electrically connected with the energy supply structure. The axis of the induction heating coil coincides with the axis of the through hole 231. When the object to be heated passes through the through hole 231, it also passes through the induction heating coil. The energy supply structure supplies power, and the electric energy is transmitted to the induction heating coil through the connecting body 222, and the induction heating coil generates heat to heat the object to be heated.

[0063] In some implementable embodiments, a plurality of partitions 232 are arranged in the heating pipe 23 along the height direction. The partitions 232 are used to divide the internal space of the heating pipe 23 into a plurality of regions, and the number of regions is one more than the number of partitions 232. The partitions 232 are provided with through holes coinciding with the through hole 231. The heating assembly 22 is provided with a plurality of groups. The number of groups of the heating assembly 22 corresponds to the number of regions into which the internal space of the heating pipe is divided.

[0064] In any implementable embodiment, two partitions 232 are arranged in the heating pipe 23 along the height direction at equal intervals. The partitions 232 are used to divide the internal space of the heating pipe 23 into three regions, and each region is provided with a group of heating assemblies 22. The heating assembly 22 is provided with a plurality of groups to effectively improve the heating efficiency. The material of the heating pipe 23 is graphite material. The material of the partition 232 is graphite material. The inner wall surface of the second shell 21 is provided with a heat insulation coating structure.

[0065] In any implementable embodiment, the heating pipe 23 is provided with a first mounting hole for mounting the connecting body 222. The heating pipe 23 is provided with a second through hole 233. The second shell 21 is in a tubular structure. The second shell 21 is sleeved on the heating pipe 23, and the second shell 21 and the heating pipe 23 are connected and fixed through a sealing structure. The second shell 21 is provided with a second mounting hole corresponding to the first mounting hole. The second shell 21 is provided with a third through hole 211 corresponding to the second through hole 233. There is a gap space between the inner wall surface of the second shell 21 and the outer wall surface of the heating pipe 23.

[0066] The heating device provided by the application has the beneficial effects that: compared with the prior art, the heating device provides multiple heating modes through the first heating assembly 2 and the second heating assembly 3, and the user can flexibly select according to the heating needs, which can effectively expand the application range of the device. The connection assembly 1 can facilitate the movement of the relative positions of the first heating assembly 2 and the second heating assembly 3. The first heating assembly 2 and the second heating assembly 3 are respectively provided with through holes in the axial direction, and can heat the areas in the through holes. After the heating operation of the material is completed, the device can directly transport the heated material into the mold, which can effectively improve the processing efficiency.

[0067] Although the preferred embodiments of the embodiments of the application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the embodiments of the application.

[0068] Finally, it should also be noted that, in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or terminal device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or terminal device including the element.

[0069] The heating device provided by the present application is described in detail above, and the principles and implementation manners of the present application are described by using specific examples in this paper. The above description of the examples is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed, and the above description should not be understood as a limitation on the present application.

Claims

1. A heating device, characterized in that, The utility model relates to a heating device, including: Connecting assembly (1), including connecting plate (11) and with connecting plate (11) swing board (12) swing connection; First heating assembly (2) is connected with swing board (12);The first heating assembly (2) is heated to the object that enters the first heating assembly (2) by induction heating mode; Second heating assembly (3) is connected with swing board (12);Second heating assembly (3) is spaced apart from the first heating assembly (2);Second heating assembly (3) includes: heat pipe (31), heating body (32), shell (33) and temperature collection structure (34);The heat pipe (31) is equipped with the through hole for object to pass through;Heating body (32) is set in the heat pipe (31) outside;Heating body (32) is in the operating state and heats the heat pipe (31);Shell (33) is set in the heating body (32) outside;The inner wall surface of shell (33) and the outer wall surface of heating body (32) exist gap space between;Temperature collection structure (34) is set in the gap space; When swing board (12) moves relative to connecting plate (11), drive the first heating assembly (2), second heating assembly (3) synchronous movement.

2. A heating device as claimed in claim 1, characterised in that Swing board (12) can reciprocating motion along transverse direction relative to connecting plate (11).

3. A heating device as claimed in claim 2, characterised in that Second heating assembly (3) further includes: valve body assembly (35) is arranged on shell (33);Valve body assembly (35) is communicated with gap space;Valve body assembly (35) is used for extracting the gas in the gap space.

4. A heating device as claimed in claim 3, characterised in that Shell (33) includes: Shell main body (331) is set in the heating body (32) outside; First air inlet disc (332) is arranged on one end of shell main body (331);First air inlet disc (332) is in contact with one end of temperature collection structure (34); First flow guide pipe base (333) is connected with one end of first air inlet disc (332) away from shell main body (331);The other end is open end; Second flow guide pipe base (334) is arranged on the other end of shell main body (331); Cooling disc (335) is arranged on the other end of shell main body (331), and cooling disc (335) is set in the second flow guide pipe base (334) outside; Second air inlet disc (336) is connected with the end face of cooling disc (335) away from shell main body (331).

5. A heating device as claimed in claim 4, characterised in that Shell main body (331) includes: Inner layer shell is set in the temperature collection structure (34) outside; Outer layer shell is set in the inner layer shell outside;The upper and lower ends of outer layer shell are respectively sealedly connected with the upper and lower ends of inner layer shell through connecting portion;There is sealed gap between outer layer shell and inner layer shell, and inert gas is filled in sealed gap or is in vacuum state.

6. A heating device as claimed in claim 5, characterised in that Second heating assembly (3) further includes: temperature measuring assembly (37) is connected with shell (33) and is used for measuring the temperature of gap space.

7. A heating device as claimed in claim 6, characterised in that The second heating assembly (3) further comprises a vacuum cover (36) detachably connected with the shell (33); when the vacuum cover (36) is connected with the end of the shell (33), the two ends of the shell (33) are blocked.

8. A heating device as claimed in claim 7, characterised in that One end of the shell (33) is connected with the vacuum cover (36) through a connecting pipe (39).

9. A heating device as claimed in any one of claims 1 to 8, characterised in that, The first heating assembly (2) comprises: A heating pipe (23) is provided with a through hole (231) penetrating through the heating pipe (23) in the height direction; A second shell (21) is sleeved outside the heating pipe (23); A heating assembly (22) comprises an induction heating coil (221) arranged in the heating pipe (23), a connecting body (222) connected with the second shell (21), and the connecting body (222) is connected with a power supply structure; when the power supply structure is operated, the induction heating coil (221) heats the object inserted into the through hole (231).

10. A heating device as claimed in claim 9, characterised in that A plurality of partitions (232) are arranged in the heating pipe (23) in the height direction; the partitions (232) are used for dividing the internal space of the heating pipe (23) into multiple areas.