CN220675168U - High-efficient flue-cured tobacco ware - Google Patents

Abstract

An efficient flue-cured tobacco device relates to the technical field of aerosol generation. The flue-cured tobacco ware includes: one end of the shell is provided with an inserting port, and the surface of the shell is provided with an external air inlet; heating element, set up in the casing is close to insert port end includes: an inner tube and a heating element, the heating element comprising: the first heating part is arranged on the periphery of the inner tube, the second heating part is arranged at the bottom of the inner tube, the inner tube is provided with a containing space for the cigarettes to be inserted from the insertion port, and the bottom of the containing space is provided with an inner air inlet communicated with the outer air inlet; the power supply assembly is arranged in the shell and is electrically connected with the heating element so as to provide power. By adopting the technical scheme, the tobacco flue-curing device realizes a three-dimensional heating structure and has high heating efficiency.

Description

High-efficient flue-cured tobacco ware

Technical Field

The utility model relates to the technical field of aerosol generation, in particular to a high-efficiency flue-cured tobacco device.

Background

Traditional smoking is by igniting tobacco with an open flame, which burns to produce smoke for the smoker to smoke. Smoke generated by burning tobacco typically contains thousands of harmful substances, and thus, conventional tobacco causes serious respiratory diseases to smokers and tends to cause second-hand smoke hazard. In order to solve the technical problem that the traditional tobacco burns to produce more harmful substances such as tar, the technical staff develop products such as a flue-cured tobacco device.

The tobacco flue-curing device can lead a user to experience the taste of the true fragrant tobacco through baking the tobacco, and simultaneously avoid the harm of tar generated by burning the tobacco to human bodies. However, the existing flue-cured tobacco device has a single heating mode, low heating efficiency, long waiting time and poor experience.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art, and provides a high-efficiency flue-cured tobacco device which has the advantages of a three-dimensional heating structure, high heating efficiency and low baking temperature.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: a high efficiency flue-cured tobacco machine comprising:

one end of the shell is provided with an inserting port, and the surface of the shell is provided with an external air inlet;

heating element, set up in the casing is close to insert port end includes: an inner tube and a heating element, the heating element comprising: the first heating part is arranged on the periphery of the inner tube, the second heating part is arranged at the bottom of the inner tube, the inner tube is provided with a containing space for the cigarettes to be inserted from the insertion port, and the bottom of the containing space is provided with an inner air inlet communicated with the outer air inlet;

the power supply assembly is arranged in the shell and is electrically connected with the heating element so as to provide power.

The utility model further provides that the heating element is an integrally formed spiral heating wire.

The utility model further provides a heating piece which is integrally punched into a heating net or an etching heating plate with a barreled structure.

The utility model is further provided with the low heat conduction layer coated on the outer sides of the first heating part and the second heating part; the first heating part and the second heating part are arranged between the inner tube and the low heat conduction layer, and the inner tube is a high heat conduction inner tube.

The utility model further provides that the outer sides of the first heating part and the second heating part are coated with a low heat conduction layer.

The utility model further provides that a heat insulation pipe is arranged between the shell and the heating component.

The utility model further provides that the heat insulation pipe is a double-layer heat insulation pipe, an air channel is arranged in the middle of the double-layer heat insulation pipe, the upper end of the air channel is communicated with the outer air inlet, and the lower end of the air channel is communicated with the inner air inlet, so that air entering from the outer air inlet brings heat in the double-layer heat insulation pipe into the accommodating space.

The utility model further provides that the two ends of the heating component are respectively provided with the upper silica gel component and the lower silica gel component so as to prevent heat from being dissipated from the two ends of the heating component.

The utility model further provides a tobacco residue bin and a tobacco residue hole which is communicated with the accommodating space and the tobacco residue bin are arranged at the bottom of the heating component, and a tobacco residue tray is detachably arranged in the tobacco residue bin.

The utility model further provides that a locking device is arranged between the tobacco residue tray and the tobacco residue bin so as to ensure the stability of the installation of the tobacco residue tray in the tobacco residue bin.

The utility model further provides that the power supply component is arranged at the bottom of the tobacco residue bin.

After the technical scheme is adopted, the utility model has the beneficial effects that:

1. in the utility model, the heating element is provided with two heating parts, namely the first heating part arranged on the peripheral side of the inner tube and the second heating part arranged on the bottom of the inner tube, the second heating part is used for heating the bottom of the cigarette and is matched with the first heating part to preheat the peripheral side of the cigarette, the three-dimensional heating of the cigarette by the heating component is realized, the heating efficiency of the tobacco flue-curing device is improved, and the preheating time of the cigarette is reduced.

2. According to the utility model, the first heating part and the second heating part are matched, so that the heating assembly is used for three-dimensional heating of the cigarettes, the cigarettes are heated more uniformly, a good baking effect can be achieved without the temperature of a heating part being too high, the energy consumption of the tobacco flue-curing device is reduced, and meanwhile, other substances harmful or influencing the taste are prevented from being generated due to overheating of the part of the cigarettes close to the heating part.

3. In the utility model, the first heating part and the second heating part are arranged between the inner tube and the shell, so that harmful substances are prevented from being generated or the cigarettes are prevented from being burnt due to the fact that the first heating part and the second heating part are in direct contact with the cigarettes. The arrangement of the high heat conduction inner tube enables heat of the second heating part to be well conducted to the cigarette, and the heating efficiency of the cigarette is guaranteed.

4. In the utility model, the double-layer heat insulation pipe is arranged between the shell and the heating component, so that overheat caused by heat conduction of the heating component to the shell is avoided. The air channel of the air inlet passing through the double-layer heat insulation pipe can not only take away the heat of the double-layer heat insulation pipe, but also bring the heat of the double-layer heat insulation pipe back to the accommodating space in the inner pipe, so that the heating efficiency is further improved, and the preheating time is reduced.

5. In the utility model, the bottom of the heating component is provided with the tobacco residue tray, the bottom of the heating component is provided with the tobacco residue hole which is communicated with the accommodating space and the tobacco residue tray, residues such as tobacco residue, tar and the like generated by heating cigarettes in the accommodating space can be collected into the tobacco residue tray through the tobacco residue hole, the accommodating space is kept clean, and the tobacco residue tray is detachably arranged on the shell, so that the tobacco residue tray is convenient to detach and clean.

6. In the utility model, the power supply component is arranged at one end of the shell far away from the heating component, so that the damage of the power supply component and even the safety problem caused by the heat generated by the heating component and tar generated by heating cigarettes are avoided.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of another view of the present utility model;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a B-B cross-sectional view of FIG. 2;

FIG. 5 is a schematic exploded view of the structure of the present utility model;

FIG. 6 is a schematic exploded view of the structure of the heating assembly;

FIG. 7 is a schematic exploded view of the upper silicone assembly;

FIG. 8 is an exploded view of a structure according to another aspect of the present utility model;

fig. 9 is a schematic exploded view of the structure of a heating assembly in other embodiments.

Reference numerals illustrate: 1. a housing; 11. an insertion port; 12. an outer air inlet; 13. an upper case; 14. a lower case; 15. a bracket; 2. a heating assembly; 21. a first heating portion; 22. a second heating portion; 23. a high heat conduction inner tube; 231. an accommodating space; 232. an inner air inlet; 24. a low heat conduction layer; 25. a heating member; 3. a power supply assembly; 4. a double-layer heat insulating pipe; 41. an air passage; 5. a silica gel assembly is arranged; 51. coating silica gel; 52. an upper bracket; 521. a vent hole; 53. covering silica gel; 54. a lower silica gel component; 6. a tobacco residue bin; 7. a smoke slag hole; 8. a slag tray; 81. a first magnetic attraction member; 82. a second magnetic member; 83. a handle.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and those skilled in the art can make modifications to the present embodiment which do not contribute to the utility model as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.

The embodiment relates to a high-efficiency flue-cured tobacco device, as shown in fig. 1-8, comprising: a housing 1, a heating assembly 2 and a power supply assembly 3.

As shown in FIG. 1, the whole flue-cured tobacco device is arranged in a strip shape, so that a user can hold the flue-cured tobacco device for use or carry the flue-cured tobacco device out. An insertion opening 11 is arranged at one end of the shell 1, when the cigarette lighter is used, the cigarette lighter is inserted into the tobacco flue-curing device from the insertion opening 11 for baking and heating, and the suction nozzle end of the cigarette is left outside the shell 1 for convenient smoking by a user. An external air inlet 12 is arranged on the surface of the shell 1, and the external air inlet 12 is communicated with the heating component 2 inside the flue-cured tobacco device so as to provide air for a user to smoke substances generated by baking cigarettes in the flue-cured tobacco device.

In the embodiment, as shown in fig. 4 and 8, the housing 1 includes an upper case 13, a lower case 14, and a bracket 15. The upper and lower cases 13 and 14 are disposed at the outermost sides to protect the flue-cured tobacco flue, and the brackets 15 are disposed at the inner sides of the upper and lower cases 13 and 14 for mounting the internal parts of the heating assembly 2, the power supply assembly 3, and the like. The upper shell 13 and the lower shell 14 are connected through a thread structure, so that the upper shell 13 and the lower shell 14 can be detached, and the parts on the inner side bracket 15 can be overhauled, cleaned and the like conveniently. Of course, in other embodiments, the housing 1 may be provided as an integral molding.

The heating element 2 is provided at one end of the housing 1 near the insertion port 11, as shown in fig. 6, and includes: inner tube, heating element 25 includes: a first heating portion 21 provided on the inner tube peripheral side and a second heating portion 22 provided at the inner tube bottom. Wherein, a containing space 231 is arranged in the middle of the inner tube, the containing space 231 corresponds to the inserting port 11, and cigarettes are inserted into the containing space 231 through the inserting port 11 so as to be heated and baked. An inner air inlet 232 is arranged at the bottom of the accommodating space 231, the inner air inlet 232 is communicated with the outer air inlet 12 to form an air inlet channel, so that the outside air can enter from the outer air inlet 12 and enter the bottom of the accommodating space 231 from the inner air inlet 232 to form an air inlet flow, and air is provided for the flue-cured tobacco machine to work, so that a user can inhale substances generated by curing cigarettes.

The tobacco flue-curing device heats and toasts cigarettes in the accommodating space 231 through the combined action of the first heating part 21 and the second heating part 22, the combined action of the heating parts 5 ensures that the heating efficiency of the tobacco flue-curing device is high, the cold starting time is short, the waiting time of use is reduced, and the use experience is optimized.

The second heating part 22 is arranged at the bottom of the accommodating space 231 and is used for heating the bottom of the cigarettes in the accommodating space 231; the first heating part 21 is arranged on the periphery of the accommodating space 231, heats the periphery of the cigarettes in the accommodating space 231, and has a large action area, so that the whole cigarettes in the accommodating space 231 can be surrounded and heated. The first heating part 21 and the second heating part 22 are mutually matched in position to form a three-dimensional heating structure so as to realize three-dimensional heating of cigarettes in the accommodating space 231 by the heating assembly 2. The three-dimensional heating structure enables the cigarettes heated by the heating component 2 to be more uniform, and enables the interior of the cigarettes to reach the temperature required by baking when the working temperature of the heating component 25 is 220-260 ℃, so that a good baking effect is achieved. Compared with the common flue-cured tobacco device, the temperature of the flue-cured tobacco device is higher than 300 ℃ when in heating operation, so that the flue-cured tobacco device of the scheme can reduce the energy consumption of the flue-cured tobacco device operation, and meanwhile, the phenomenon that the part of the cigarette close to the heating element 25 is overheated to generate other substances harmful or influencing the taste of the cigarette is avoided.

In this embodiment, the first heating part 21 and the second heating part 22 of the heating element 25 are integrally formed spiral heating wires, the integrated heating element 25 realizes a three-dimensional heating structure, and the three-dimensional heating effect of the heating element 25 is optimized by setting the densities of the spiral heating wires in different areas to set the heating values in different areas. Of course, in other embodiments, the heating element 25 may have other structures, such as a heating net or an etched heating plate integrally punched into a barrel structure as shown in fig. 9.

In this embodiment, the low heat conduction layer 24 is further disposed on the outer sides of the second heating portion 22 and the first heating portion 21, and the low heat conduction layer 24 is wrapped on the outer sides of the second heating portion 22 and the first heating portion 21, so that heat generated by the second heating portion 22 and the first heating portion 21 can be effectively prevented from being dissipated to the outside, the heating efficiency of the flue-cured tobacco device is ensured, and a certain heat preservation effect can be achieved on cigarettes in the accommodating space 231. As a preferred embodiment, the low heat conducting layer 24 is a porous ceramic material.

In this embodiment, the second heating portion 22 and the first heating portion 21 are disposed on the outer side of the inner tube and located between the low heat conduction layer 24 and the inner tube, so that the second heating portion 22 and the first heating portion 21 do not directly contact with the cigarettes in the accommodating space 231, and some harmful substances are prevented from being generated or the cigarettes are burnt. The inner tube is set to the high heat conduction inner tube 23 for the heat that second heating position 22 and first heating position 21 produced can not receive the separation of high heat conduction inner tube 23, can high-efficient conduction to the cigarette in the accommodation space 231, in order to guarantee the heating efficiency of flue-cured tobacco ware. As a preferable scheme, the high heat conduction inner tube 23 is made of alumina material, and the spiral heating wire and the high heat conduction inner tube 23 are integrally molded by injection molding. Of course, in other embodiments, the inner tube 23 may be made of other materials.

In this embodiment, as shown in fig. 3 and 4, a heat insulation pipe is disposed between the casing 1 and the heating component 2 to avoid heat transfer from the inner side of the heat insulation pipe to the outer side of the heat insulation pipe, which causes heat dissipation of the heating component 2 and affects heating efficiency and heat preservation effect of the flue-cured tobacco device; and meanwhile, heat of the heating component 2 can be prevented from being transferred to the shell 1 outside the heat insulation pipe, so that the temperature of the shell 1 outside is increased, and the experience of holding the flue-cured tobacco device by a user is affected.

As a preferable embodiment, the heat insulating pipe is a double-layer heat insulating pipe 4, and is provided inside the bracket 15. The intermediate layer of double-deck thermal-insulated pipe 4 is air channel 41, and air channel 41's upper end and the outer air inlet 12 intercommunication of casing 1, and air channel 41's lower extreme and the interior air inlet 232 intercommunication of accommodation space 231 bottom, the air that gets into in the casing 1 from outer air inlet 12 can pass through air channel 41 and get into accommodation space 231 from interior air inlet 232 again, and the air inlet air current of formation can take the heat in the double-deck thermal-insulated pipe 4 to in the accommodation space 231. The air inflow through the air channel 41 of the double-layer heat insulation pipe 4 can take away the heat emitted outwards by the heat inside the double-layer heat insulation pipe 4, so that the heat is prevented from being further emitted to the shell 1 outside the double-layer heat insulation pipe 4, and the temperature of the shell 1 is increased to influence the user experience. Meanwhile, the heat of the double-layer heat insulation pipe 4 is brought back into the accommodating space 231 by the air inlet air flow, so that the heat efficiency of the flue-cured tobacco device is guaranteed, and the air flow entering the accommodating space 231 through the air channel 41 of the double-layer heat insulation pipe 4 is warm due to the fact that a certain amount of heat is absorbed, so that a user cannot directly absorb external cold air to cause bad use experience. Of course, in other embodiments, the heat insulating tube may be configured as another heat insulating tube such as a vacuum heat insulating tube, so as to avoid heat transfer from the inner side of the heat insulating tube to the outer side of the heat insulating tube.

As a preferred solution, the inner layer of the double-layer heat insulation pipe 4 is the low heat conduction layer 24, and then the inner side of the air channel 41 is the outer side of the low heat conduction layer 24, so that the air entering from the outer air inlet 12 can bring the heat outside the low heat conduction layer 24 into the accommodating space 231, the efficiency of absorbing heat by the air flow is higher, the heat brought back by the air entering into the accommodating space 231 is more, and the heat insulation effect to the outer side is better. The low thermal conductivity of the low heat conduction layer 4 allows the intake air flow to absorb the heat emitted outwards, and simultaneously prevents the intake air flow from causing a great loss of heat of the heating element 22, so that the heating element 22 is cooled to influence the heating efficiency of the flue-cured tobacco device.

In this embodiment, as shown in fig. 3, 5 and 6, an upper silica gel 51 assembly 5 is disposed at the upper end of the heating assembly 2, so as to avoid heat dissipation from the upper end of the heating assembly 2 in the heating assembly 2, improve the heat insulation effect of the heating assembly 2, and avoid scalding the user caused by overheating of the housing 1 at the upper end of the heating assembly 2. The upper silica gel 51 assembly 5 comprises an upper silica gel 51 arranged on the heating assembly 2 and an upper bracket 52 arranged between the upper silica gel 51 and the bracket 15, the upper bracket 52 is matched with the upper silica gel 51 to seal the middle of the bracket 15 and the heating assembly 2, and the upper bracket 52 is provided with a vent 521 communicated with the upper end of the double-layer heat insulation pipe 4 so that inlet air flow can smoothly enter the double-layer heat insulation pipe 4 to play a role in heat insulation. As a preferable scheme, an upper cover silica gel 53 is further arranged between the upper bracket 52 and the upper shell 13, so that the heat insulation of the upper end of the heating assembly 2 is enhanced, the sealing performance of the inside of the shell 1 is improved, and the stability of the inlet air flow is ensured.

In this embodiment, as shown in fig. 4, a lower silica gel component 54 is disposed at the lower end of the heating component 2 to avoid heat dissipation from the lower end of the heating component 2 in the heating component 2, so as to improve the heat insulation effect of the heating component 2, and avoid the temperature rise inside the housing 1, thereby affecting the performance of the power supply component 3 in the housing 1.

When the tobacco flue-curing device heats and cures cigarettes in the accommodating space 231, residues such as tobacco residue and tar are generated, and the residues at the bottom of the accommodating space 231 are not easy to clean, so that peculiar smell and bacteria are easy to generate for a long time, and the use experience and health are affected.

In this embodiment, as shown in fig. 8, a slag bin 6 and a slag hole 7 communicating the slag bin 6 and the accommodating space 231 are further provided at the bottom of the heating assembly 2, and a slag tray 8 is detachably installed in the slag bin 6. Residues such as tobacco residue and tar are generated when the baked cigarettes are heated, and fall into the tobacco residue tray 8 in the tobacco residue bin 6 through the tobacco residue holes 7 at the bottom of the accommodating space 231 so as to collect the residues, and then the tobacco residue tray 8 is disassembled to clean and sterilize through the detachable structure of the tobacco residue bin 6 and the tobacco residue tray 8, so that the cleanness and sanitation of the tobacco flue-curing device are ensured.

In this embodiment, as shown in fig. 3, the residue hole 7 is disposed in the center of the bottom of the accommodating space 231, so that the residue in the accommodating space 231 can easily fall into the residue tray 8 in the residue bin 6, thereby ensuring the cleaning of the accommodating space 231 and avoiding the bad effect caused by secondary heating of the residue. As a preferred solution, the size of the slag hole 7 is set large and allows the cleaning brush to pass. The larger aperture guarantees that residues can smoothly fall into the tobacco residue tray 8, the tobacco residue hole 7 is not easy to be blocked, and the residues adhered in the accommodating space 231 can be cleaned to the tobacco residue hole 7 by the cleaning brush and then are introduced to the tobacco residue tray 8, so that the cleanliness of the tobacco flue-cured tobacco device is improved.

In this embodiment, as shown in fig. 8, a locking device is provided between the slag bin 6 and the slag tray 8 to lock the slag tray 8 in the slag bin 6, ensure the setting position and the stability of the installation of the slag tray 8 in the slag bin 6, ensure that residues all fall into the slag tray 8, and avoid the risk of the residues inside being sunk due to the extraction of the slag tray 8. As a preferred solution, the locking device is a magnetic assembly arranged between the tobacco residue bin 6 and the tobacco residue tray 8, comprising: a first magnetic attraction member 81 provided on the slag bin 6 and a second magnetic member 82 provided on the slag tray 8. Through the magnetic attraction between the first magnetic attraction piece 81 and the second magnetic piece 82, when the tobacco dreg tray 8 is installed in the tobacco dreg bin 6, the installation stability can be kept, the accurate installation position and locking of the tobacco dreg tray 8 are realized, and the accidental dispatch of the tobacco dreg tray 8 is effectively avoided. Of course, in other embodiments, the locking means may be provided in other arrangements to lock the slag tray 8 within the slag bin 6 without being easily dropped out, such as a snap-fit assembly or the like.

In this embodiment, as shown in fig. 8, a handle 83 is further provided on the outer side of the slag tray 8, so that a user can smoothly take out the slag tray 8 from the slag bin 6 to clean the slag tray 8. As a preferred solution, the slag pan 8 is arranged on the support 15, and the inner sides of the upper shell 13 and the lower shell 14 are required to be disassembled to take out the slag pan 8. The upper shell 13 and the lower shell 14 are arranged on the outer side of the tobacco residue tray 8 so that the tobacco residue tray 8 cannot be easily pulled out, and meanwhile, the tobacco residue tray 8 is prevented from flying out due to the fact that the tobacco residue tray 8 is pulled out and the tobacco flue-cured tobacco device is dropped by mistake.

In this embodiment, as shown in fig. 4, the tobacco residue bin 6 is communicated with the air channel 41 at the lower end of the double-layer heat insulation pipe 4, so that the air inlet airflow can pass through the tobacco residue bin 6 and then enter the accommodating space 231 through the tobacco residue hole 7 to serve as an inner air inlet hole, and residues such as tobacco residue can be effectively prevented from blocking the inner air inlet 232. Meanwhile, when the tobacco residue tray 8 and the tobacco residue bin 6 are mounted, the tobacco residue tray 8 and the tobacco residue bin 6 are in sealing fit, so that the influence on the air inflow caused by the fact that the outside air directly enters the accommodating space 231 from the tobacco residue tray 8 and the air of the tobacco residue tray 8 is avoided, and the heat insulation function of the double-layer heat insulation pipe 4 is invalid.

The power supply assembly 3 is disposed in the housing 1, and is electrically connected to and controlled by the second heating portion 22 and the first heating portion 21. As a preferable scheme, the power supply assembly 3 is arranged at the bottom of the tobacco residue bin 6, so that the power supply assembly 3 is far away from the heating assembly 2, the overheat of the power supply assembly 3 caused by heat generated by the heating assembly 2 is effectively avoided, the tar generated by baking cigarettes can be prevented from flowing into the power supply assembly 3 due to the arrangement of the tobacco residue bin 6, and faults such as short circuit and the like of the power supply assembly 3 are avoided.

The above description is only for the purpose of illustrating the technical solution of the present utility model and not for the purpose of limiting the same, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A high efficiency flue-cured tobacco machine, comprising:

a shell (1), one end of which is provided with an inserting port (11), and the surface of which is provided with an external air inlet (12);

a heating assembly (2) disposed within the housing (1) proximate the insertion port (11) end, comprising: an inner tube and a heating element (25); the heating element (25) comprises: a first heating part (21) arranged on the periphery side of the inner tube and a second heating part (22) arranged at the bottom of the inner tube, wherein the inner tube is provided with a containing space (231) for the cigarettes to be inserted from the insertion port (11), and the bottom of the containing space (231) is provided with an inner air inlet (232) communicated with the outer air inlet (12);

and the power supply assembly (3) is arranged in the shell (1) and is electrically connected with the heating piece (25) so as to provide power.

2. The flue-cured tobacco flue-curing device according to claim 1, characterized in that the heating element (25) is an integrally formed spiral heating wire.

3. The flue-cured tobacco flue-curing device according to claim 1, characterized in that the heating element (25) is a heating mesh or an etched heating plate integrally punched into a barreled structure.

4. The flue-cured tobacco flue-curing device according to claim 1, characterized in that the first heating part (21) and the second heating part (22) are coated with a low heat conducting layer (24) on the outer sides, the first heating part (21) and the second heating part (22) are arranged between the inner tube and the low heat conducting layer (24), and the inner tube is a high heat conducting inner tube (23).

5. The flue-cured tobacco flue-curing device according to claim 1, characterized in that a heat-insulating tube is arranged between the housing (1) and the heating assembly (2).

6. The flue-cured tobacco flue-curing device according to claim 5, wherein the heat-insulating pipe is a double-layer heat-insulating pipe (4), an air channel (41) is arranged in the middle of the double-layer heat-insulating pipe (4), the upper end of the air channel (41) is communicated with the outer air inlet (12), and the lower end of the air channel is communicated with the inner air inlet (232), so that air entering from the outer air inlet (12) brings heat in the double-layer heat-insulating pipe (4) into the accommodating space (231).

7. The flue-cured tobacco flue-curing device according to claim 1, wherein the heating component (2) is provided with an upper silica gel (51) component (5) and a lower silica gel component (54) at both ends respectively, so as to avoid heat dissipation of the heating component (2) from both ends.

8. The flue-cured tobacco flue-curing device according to claim 1, characterized in that a tobacco residue bin (6) and a tobacco residue hole (7) which is communicated with the accommodating space (231) and the tobacco residue bin (6) are arranged at the bottom of the heating component (2), and a tobacco residue tray (8) is detachably arranged in the tobacco residue bin (6).

9. The flue-cured tobacco flue-curing device according to claim 8, characterized in that a locking device is arranged between the tobacco residue tray (8) and the tobacco residue bin (6) to ensure the stability of the installation of the tobacco residue tray (8) in the tobacco residue bin (6).

10. The flue-cured tobacco flue-curing device according to claim 8, characterized in that the power supply assembly (3) is arranged at the bottom of the tobacco residue bin (6).