A porous heating element air-heated non-combustible smoke appliance

Abstract

This invention discloses a porous heating element air-heated non-combustible smoking device, comprising a tube, an air guiding layer, and a heating component. The tube includes an upper cavity and a lower cavity, with the air guiding layer disposed within the tube. The upper cavity is located above the air guiding layer, and the lower cavity is located below it. The air guiding layer has air guiding holes. The upper cavity is used to hold a cigarette, and the heating component is disposed within the lower cavity. The heating component heats the air to form a hot airflow. The heating component includes a heating element and several heating holes, which are used to heat and conduct the hot airflow. The heating holes penetrate the heating element and are interconnected. This invention can quickly heat air in a small space without increasing the volume of the smoking device to extend the airflow path, effectively reducing the size of the smoking device and making it easy to carry.

Description

Technical Field

[0001] This invention relates to the field of heated non-combustible smoking appliances, and in particular to a heated non-combustible smoking appliance with a porous heating element and air heating. Background Technology

[0002] Currently, heated tobacco products mainly use needle or plate type heating elements inserted into the cigarette for heating. This method is prone to causing the heating needle or heating plate to break during insertion and removal, affecting its use. In addition, the heating starts from the center of the cigarette and goes outward, with the temperature in the middle being high and the side being low, resulting in uneven heating overall.

[0003] Another type of air heating technology first heats the air through a resistance wire, and then transmits the heated air to the tobacco section of the cigarette, thereby heating the tobacco and releasing substances such as aroma and nicotine from the tobacco to form an aerosol for the user to inhale.

[0004] Existing air heating technology typically uses spiral resistance wires to heat the air. Because the air heating efficiency is low, a long path is required to heat the air to a high temperature, resulting in a large heating component. It is usually located at the bottom of the cigarette insert position, which makes the overall length of the smoking device too long and the size too large, making it inconvenient to use and carry.

[0005] For example, Chinese patent publication CN212414741U discloses a heat-insulating, non-contact electronic cigarette heating device. The device includes the following components: a heating cup top cover, a heat-conducting pipe, a heating element, and a heating cup bottom cover. This invention utilizes a multi-layered airflow channel structure formed by the heating cup top cover and bottom cover. This design extends the length of the airflow channel, ensuring sufficient hot air supply and avoiding the problem of inconsistent inhalation caused by insufficient hot air supply.

[0006] According to the technical solutions disclosed in the aforementioned patent documents, although the supply rate of hot air is increased by forming a multi-layer air passage structure on the upper and lower covers of the heating cup, thereby alleviating the problems of poor suction consistency and excessive volume. Summary of the Invention

[0007] The purpose of this invention is to provide a non-combustible smoke appliance with a porous heating element that heats air quickly in a small space without increasing the volume of the smoke appliance to extend the airflow path, thus effectively reducing the size of the smoke appliance and making it easy to carry.

[0008] This invention provides a heated non-combustible smoking device with a porous heating element and air heating, comprising a tube body, an air guiding layer, and a heating component; the tube body includes an upper cavity and a lower cavity, the air guiding layer is disposed within the tube body, the upper cavity is located above the air guiding layer, and the lower cavity is located below the air guiding layer; the air guiding layer is provided with air guiding holes; the upper cavity is used to hold a cigarette, and the heating component is disposed within the lower cavity; the heating component is used to heat the air to form a hot airflow, the heating component includes a heating element and a plurality of heating holes, the heating holes are used to heat and conduct the hot airflow; the heating holes penetrate the heating element and are interconnected.

[0009] Furthermore, the heating through hole is provided through the upper and lower end faces of the heating element. The heating through hole includes a first through hole and a second through hole. The diameter of the first through hole is larger than the diameter of the second through hole. The first through hole is connected to at least one of the second through holes.

[0010] Furthermore, the diameter of the first through hole gradually increases from top to bottom.

[0011] Furthermore, the outer diameter of the heating element gradually decreases from bottom to top, and the heating through hole is provided through the upper and lower end faces of the heating element.

[0012] Furthermore, the heating element also includes a support column and a spiral channel, the heating element is disposed in the spiral channel, the spiral channel is wound around the side wall of the support column, and the spiral channel has an air inlet and an air outlet.

[0013] Furthermore, the heating element is spirally wound around the side wall of the supporting column.

[0014] Furthermore, the heating component also includes a heating tray, and at least two supporting columns are provided, with the supporting columns arranged in an array on the heating tray.

[0015] Furthermore, an insulating and heat-conducting layer is also provided on the inner wall of the tube.

[0016] Furthermore, an insulating layer is provided between the air guiding layer and the heating component, and the insulating layer has insulating through holes.

[0017] Furthermore, a heat radiation layer is also provided on the inner wall of the tube.

[0018] The beneficial effects of this invention are:

[0019] This invention provides a heated non-combustible smoking device with a porous heating element for air heating. By setting interconnected heating holes on the heating element to form a porous structure, the heating element can quickly heat the air in a small space. On the other hand, it can increase the porosity of the heating element and increase the gas flow rate. In this way, the air can be heated quickly without increasing the volume of the smoking device to extend the airflow path, which can effectively reduce the size of the smoking device, make it easy to carry, and at the same time ensure the consistency of the inhalation when using the smoking device. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but should not be construed as limiting the invention.

[0021] In the picture:

[0022] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional structural diagram of the first embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the heating component in the first embodiment of the present invention.

[0025] Figure 4 This is a cross-sectional structural diagram of the second embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the heating component in the second embodiment of the present invention.

[0027] Figure 6 This is a cross-sectional view of the heating component in the second embodiment of the present invention.

[0028] Figure 7 This is a cross-sectional structural diagram of the third embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the heating component in the third embodiment of the present invention.

[0030] Figure 9 This is a cross-sectional view of the heating component in the third embodiment of the present invention.

[0031] Figure 10 This is a cross-sectional structural diagram of the fourth embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of the heating component from a first angle in the fourth embodiment of the present invention.

[0033] Figure 12This is a schematic diagram of the heating component from a second angle in the fourth embodiment of the present invention.

[0034] Figure 13 This is a cross-sectional view of the heating component in the fourth embodiment of the present invention.

[0035] Figure 14 This is a cross-sectional structural diagram of the fifth embodiment of the present invention.

[0036] Figure 15 This is a schematic diagram of the heating component in the fifth embodiment of the present invention.

[0037] Figure 16 This is a cross-sectional view of the heating component in the fifth embodiment of the present invention.

[0038] Reference numerals: 1. Tube body; 11. Upper cavity; 12. Lower cavity; 13. Air inlet; 14. Air outlet; 2. Air guide layer; 21. Air guide hole; 3. Heating element; 30. Electrode; 31. Heating element; 32. Heating hole; 321. First through hole; 322. Second through hole; 33. Support column; 34. Heating tray; 35. Spiral channel; 351. Air inlet; 352. Air outlet; 4. Power supply; 5. Insulation layer; 51. Insulation through hole; 6. Insulation and heat conduction layer. Detailed Implementation

[0039] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0040] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0041] First embodiment.

[0042] Please see Figures 1-3 The first embodiment of the present invention provides a porous heating element air-heated non-combustible smoke appliance, which includes a tube body 1, an air guiding layer 2 and a heating component 3.

[0043] Please see Figure 1 and Figure 2 The tube body 1 includes an upper cavity 11 and a lower cavity 12. The air guiding layer 2 is disposed inside the tube body 1. The upper cavity 11 is located above the air guiding layer 2, and the lower cavity 12 is located below the air guiding layer 2. The air guiding layer 2 is provided with an air guiding hole 21. The upper cavity 11 is used to place the cigarette stick, and the heating element 3 is disposed inside the lower cavity 12.

[0044] Please see Figure 2 and Figure 3 The heating component is used to heat air to form a hot airflow. The heating component 3 includes a heating element 31 and a plurality of heating through holes 32. The heating through holes are used to heat and conduct the hot airflow. The heating through holes 32 are disposed through the heating element 31 and are interconnected.

[0045] The material of the heating element 31 may be one or a combination of two or more of nickel, aluminum, iron, chromium, magnesium and carbon.

[0046] Specifically, the heating holes 32 are arranged in an orderly or disordered manner on the heating element 31; when the heating holes 32 are arranged in an orderly manner, the gas guidance can be increased; when the heating holes 32 are arranged in a disordered manner, the airflow contact area can be increased.

[0047] In this embodiment, please refer to Figure 2 and Figure 3 For ease of demonstration, the heating through hole 32 is set vertically and passes through the upper and lower end faces of the heating element 31. The heating through hole 32 has through holes on its wall.

[0048] In other embodiments based on this embodiment, the heating through holes 32 may be arranged in multiple directions, the heating through holes 32 are interconnected, and the heating through holes 32 penetrate through each outer surface of the heating element 31, so that the heating element 31 forms a loose porous structure; the heating through holes 32 in this embodiment are not easy to show, and the specific structure is not shown in the figure.

[0049] Specifically, the shape of the heating through-hole 3233 can be circular, elliptical, rectangular, or regular polygonal, etc.; the inner diameter of the heating through-hole 32 can be uniform or varied. Preferably, the diameter of the heating through-hole is 10–100 μm.

[0050] Preferably, please refer to Figure 3 The heating element 31 is columnar, and the heating through holes 32 are arranged circumferentially around the central axis of the heating element 31. The heating through holes 32 are elliptical in shape.

[0051] Preferably, the opening area of ​​the air guide hole 21 on the air guide layer is 50-90%, and the diameter of the air guide hole 21 is 0.2-1mm. In use, the air guide layer 2 can abut against the cigarette or there can be a gap between the air guide layer 2 and the cigarette. When there is a gap between the air guide layer 2 and the cigarette, the hole wall of the air guide hole 21 extends into the upper cavity 11, and the distance between the upper end of the hole wall of the air guide hole 21 and the air guide layer 2 is 0.1-0.5mm.

[0052] The above configuration, by setting heating through holes 32 on the heating element 31 to form a porous structure, enables the heating element 31 to quickly heat the air in a small space. On the other hand, it can increase the porosity of the heating element 31 and increase the gas flow rate. In this way, the air can be heated quickly without increasing the volume of the smoking device to extend the airflow path, which can effectively reduce the volume of the smoking device, making it easy to carry, while ensuring consistent inhalation when using the smoking device.

[0053] Further, please refer to Figure 2 An insulating and thermally conductive layer 6 is also provided on the inner wall of the tube body 1. Specifically, the insulating and thermally conductive layer 6 is disposed on the lower cavity 12. The thermal conductivity of the insulating and thermally conductive layer 5 is greater than 20 W / mK, for example, aluminum oxide or aluminum nitride, and the thickness of the insulating and thermally conductive layer 5 is 20 to 50 micrometers.

[0054] Further, please refer to Figure 2 An insulating layer 5 is further provided between the air-conducting layer 2 and the heating element 3, and the insulating layer 5 has insulating through holes 51. The insulating and heat-insulating layer can be alumina, aluminum oxide, or aluminum carbide, etc., and the thermal conductivity of the insulating and heat-conducting layer 5 is greater than 20 W / m·K. The shape of the insulating through holes 51 can be circular, elliptical, rectangular, or regular polygonal. The thickness of the insulating and heat-conducting layer 5 is preferably 10–40 mm.

[0055] Specifically, the upper side of the insulating layer 5 abuts against the gas-conducting layer 2, and the lower side of the insulating layer 5 abuts against the heating element 31. Since the gas-conducting layer 2 is generally made of a conductive material, by providing the insulating layer 5 between the heating element 31 and the gas-conducting layer 2, on the one hand, when the gas-conducting layer 2 is conductive, the insulating layer 5 can prevent the heating element 31 from coming into contact with the gas-conducting layer 2 and causing a short circuit in the heating element 31; on the other hand, the insulating layer 5 can also transfer the heat of the heating element 31 to the gas-conducting layer 2 through thermal conduction, and the gas-conducting layer 2 then heats the cigarette through thermal conduction, thereby further improving the heating effect of the cigarette.

[0056] Specifically, the air guiding layer 2 can be a planar sheet or have a rounded top surface; the wall of the air guiding hole 21 can also extend upward to form a protrusion (not shown in the figure), the protrusion can abut against the cigarette or extend into the inside of the cigarette, so that the hot airflow can more easily enter the inside of the cigarette for heating.

[0057] The air-conducting layer 2 can be copper, aluminum, or a metal alloy, or it can be a porous silicon structure or a mesh structure, or it can be a thermally conductive ceramic with added thermally conductive fibers, and the fibers can be carbon fibers; the content of copper, aluminum, and aluminum nitride fibers is preferably less than 30%, and the ceramic matrix is ​​preferably aluminum nitride.

[0058] Furthermore, a heat radiation layer (not shown in the figure) is also provided on the inner wall of the tube body. In this embodiment, the heat radiation layer (not shown in the figure) is positioned on the side away from the tube body 1, with the insulating heat-conducting layer 6 located away from the tube body 1; the thickness of the heat radiation layer is preferably 10-30 μm, and the material of the heat radiation layer contains more than 70% aluminum paste or carbon paste. With the above configuration, the heat lost by the air inside the tube body is first reflected by the heat radiation layer and reheats the air, thereby recovering a certain amount of heat. At the same time, the heat radiation layer transfers the lost heat to the insulating heat-conducting layer 6 through heat conduction, and the insulating heat-conducting layer 6 transfers the heat to the insulating layer 5 through heat conduction. The insulating layer 5 then transfers the heat to the cigarette through the air guide layer 2, further recovering heat and improving heating efficiency.

[0059] Specifically, please refer to Figure 2 A gap is provided between the heating element 31 and the inner wall of the tube 1.

[0060] Specifically, the pipe body 1 is provided with an air inlet 13 and an air outlet 14. The air inlet 13 is located in the lower cavity 12, and the air outlet 14 is located in the upper cavity 11. The pipe body 1 is tubular in shape. The air inlet 13 is the lower opening of the pipe body 1, and the air outlet 14 is the upper opening of the pipe body 1. Outside air enters the pipe body 1 through the air inlet 13, and the gas inside the pipe body 1 flows out through the air outlet 14.

[0061] When the smoking device is used, outside air flows through the heating holes 32 on the heating element 31 and there is a gap between the heating element 31 and the inner wall of the tube 1. The heating component 3 heats the air to form a hot airflow with an upward trend, which enters the upper cavity 11 to heat the cigarette, thereby enabling the cigarette to be heated quickly and evenly in a small space.

[0062] Specifically, the tube body 1 is made of heat-insulating materials such as aluminum oxide or aluminum nitride, and has a heat-insulating effect; the thickness of the tube body 1 is 20-50 μm, and the thermal conductivity of the tube body 1 is greater than 20 W / m·K.

[0063] Specifically, please refer to Figure 2It also includes electrodes 30 and a power supply 4; the power supply 4 is used to supply power to the heating element 3; the electrodes 30 include positive and negative electrodes 30, and the heating element 3 is connected to the two electrodes 30 respectively, and the heating element 3 is electrically connected to the power supply 4 through the electrodes 30. In this embodiment, the electrodes 30 are columnar, and the two electrodes 30 are fixedly connected to the heating element 31 respectively, with the end of the electrode 30 away from the heating element 31 fixedly connected to the power supply 4. In this way, the electrodes 30 can provide support for the heating element 31 on the one hand, and at the same time realize the electrical connection between the heating element 31 and the power supply 4 on the other hand.

[0064] The electrode 30 is further provided with a thermal radiation layer (not shown in the figure) on its surface. The thickness of the thermal radiation layer is 10 to 30 micrometers, and the material of the thermal radiation layer contains more than 70% aluminum paste or carbon paste.

[0065] Second embodiment.

[0066] Please see Figures 4-6 The difference between the porous heating element air-heated non-combustible smoke appliance provided in the second embodiment of the present invention and the first embodiment is that, in this embodiment, the heating through hole 32 is provided through the upper and lower end faces of the heating element 31, and the heating through hole includes a first through hole 321 and a second through hole 322. The diameter of the first through hole 321 is larger than the diameter of the second through hole 322, and the first through hole 321 is connected to at least one of the second through holes 322.

[0067] Further, please refer to Figure 6 The diameter of the first through hole 321 gradually increases from top to bottom. Specifically, the cross-section of the first through hole 321 is an isosceles trapezoid, and the first through hole 321 and the second through hole 322 are respectively vertically arranged.

[0068] The above configuration, by setting the diameter of the first through hole 321 to gradually decrease from bottom to top, allows the airflow velocity through the first through hole 321 to increase as it rises, thereby increasing the speed of the airflow when passing through the air guide layer 2. This allows the heated airflow to more fully enter the cigarette and heat the tobacco. At the same time, by connecting the first through hole 321 and the second through hole 322 inside the heating element 31, the hot airflow flows through the first through hole 321 and the second through hole 322 respectively as it rises through the heating element 31. In this way, the contact area between the heating element 31 and the air is increased while ensuring the airflow rate, thus improving the heating effect.

[0069] Preferably, please refer to Figure 5 and Figure 6A portion of the second through hole 322 is connected to the first through hole 321; it can also be understood that a portion of the second through hole 322 and the first through hole 321 overlap in the upward view. In this way, the hot airflow formed by heating the air enters from the lower end of the first through hole 321, enters the second through hole 322 connected to the first through hole 321 during the rising process and flows out from the second through hole 322, as well as from the upper end of the first through hole 321, thereby increasing the contact area between the heating element 31 and the air.

[0070] Third embodiment.

[0071] Please refer to Figures 7-9 The difference between the porous heating element air-heated non-combustible smoke appliance provided in the third embodiment of the present invention and the first embodiment is that, in this embodiment, the outer diameter of the heating element 31 gradually decreases from bottom to top, and the heating through hole 32 is provided through the upper and lower end faces of the heating element 31. Specifically, the heating through hole 32 has a through hole on its wall; the heating element 31 is shaped like a frustum.

[0072] The above configuration, by setting the outer diameter of the heating element 31 to gradually decrease from bottom to top, makes the gap between the outer wall of the heating element 31 and the inner wall of the tube 1 gradually increase from bottom to top. In this way, the air in the lower cavity 12 is heated to form a hot airflow. The flow rate of the hot airflow becomes faster and faster as it moves from bottom to top, thereby increasing the speed of the airflow when it passes through the air guide layer 2, so that the heated airflow can more fully enter the inside of the cigarette to heat the tobacco.

[0073] Fourth embodiment.

[0074] Please refer to Figures 10-13 The difference between the porous heating element air-heated non-combustible smoke appliance provided in the fourth embodiment of the present invention and the first embodiment is that, in this embodiment, the heating element 3 further includes a supporting column 33 and a spiral channel 35, the heating element 31 is disposed in the spiral channel 35, the spiral channel 35 is wound around the side wall of the supporting column 33, and the spiral channel 35 has an air inlet 351 and an air outlet 352.

[0075] Specifically, the air inlet 351 is located away from the air guide layer 2, and the air outlet 352 is located towards 2.

[0076] In this embodiment, please refer to Figure 11 and Figure 12The air inlet 351 and the air outlet 352 are the two openings at both ends of the spiral channel 35. The air inlet 351 has a slit to increase the air intake, and the air outlet 352 has a slit to diffuse the hot airflow. The slits are formed by oblique cuts from the air inlet 351 and the air outlet 352 toward the wall of the spiral channel 35. One end of the slit in the air inlet 351 is inclined away from the air guide layer 2, and one end of the slit in the air outlet 352 is inclined toward the air guide layer 2. Thus, by providing slits in the air inlet 351, the air intake of the air inlet 351 can be increased; by providing slits in the air outlet 352, the hot airflow flowing from the spiral channel 35 can diffuse and pass through the air guide layer 2, thereby making the heating of the cigarette more uniform.

[0077] In other embodiments, the air inlet and the air outlet can also be directly formed into the above-described cut shape, or the air inlet can be configured as other existing structures that can increase the air intake volume, and the air outlet can be configured as other existing structures that facilitate the diffusion of hot airflow.

[0078] Further, please refer to Figures 11-13 The heating element 31 is spirally wound around the side wall of the supporting column 33. Specifically, the heating element 31 is spirally wound from bottom to top.

[0079] In this embodiment, the supporting column 33 is a solid column, which serves as a supporting carrier for the heating element 31.

[0080] In other embodiments, the supporting column can also be a tubular structure (not shown in the figure), and when the heating element is working, the generated hot airflow can also pass through the tubular supporting column.

[0081] In this configuration, the heating element 31 heats the air inside the lower cavity 12, forming an upward-flowing hot airflow. The heating element 31 is spirally arranged to heat the air, creating a spirally rising hot airflow. During its ascent, the spirally rising hot airflow continuously contacts the spirally arranged heating element 31, thus extending the path of contact between the hot airflow and the heating element 31. As the hot airflow spirals upward along the spiral structure of the heating element 31, its temperature continuously increases during the ascent.

[0082] In this embodiment, the internal airflow channel 16 is disposed within the supporting column 33. The supporting column 33 may be made of one or more of alumina or aluminum nitride.

[0083] Fifth embodiment.

[0084] Please refer to Figures 14-16The difference between the porous heating element air-heated non-combustible smoke appliance provided in the fifth embodiment of the present invention and the fourth embodiment is that, in this embodiment, the heating component 3 further includes a heating tray 34, and at least two supporting columns 33 are provided, and the supporting columns 33 are arranged in an array on the heating tray 34.

[0085] Specifically, there are two heating trays 34, which are arranged vertically to each other. Each heating tray 34 has a heating through hole 32. The two ends of the supporting column 33 are respectively fixedly connected to the two heating trays 34. The heating element 31 is wrapped around the outer wall of each supporting column 33. A portion of the heating through holes 32 on the heating tray 34 communicates with the supporting column 33.

[0086] Preferably, each of the supporting columns 33 is wound with a heating element 31, and the two electrodes of each heating element 31 are respectively connected to the two heating trays 34.

[0087] The above configuration, through the multiple arrayed support columns 33 and the heating element 31 disposed on the support columns 33, can increase the contact area between the heating element 31 and the support heat conductor and the air, and can also increase the path of the hot airflow, thereby increasing the temperature of the airflow when it flows through the air guide layer 2.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A non-combustible smoke appliance with a porous heating element and air heating, characterized in that, The device includes a tube body, an air guiding layer, and a heating element. The tube body comprises an upper cavity and a lower cavity. The air guiding layer is disposed within the tube body, with the upper cavity located above the air guiding layer and the lower cavity located below it. The air guiding layer has air guiding holes. The upper cavity is used to hold a cigarette, and the heating element is disposed within the lower cavity. The heating element is used to heat air to form a hot airflow. The heating element includes a heating element and several heating holes, which are used to heat and conduct the hot airflow. The heating holes penetrate the heating element and are interconnected. The heating through hole is provided through the upper and lower end faces of the heating element. The heating through hole includes a first through hole and a second through hole. The diameter of the first through hole is larger than the diameter of the second through hole. The first through hole is connected to at least one of the second through holes. The diameter of the first through hole gradually increases from top to bottom; An insulating layer is provided between the air guiding layer and the heating element. The insulating layer has insulating through holes. The upper side of the insulating layer abuts against the air guiding layer, and the lower side of the insulating layer abuts against the heating element.

2. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 1, characterized in that, The outer diameter of the heating element gradually decreases from bottom to top, the heating through hole is provided through the upper and lower end faces of the heating element, and the gap between the outer wall of the heating element and the inner wall of the tube gradually increases from bottom to top.

3. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 1, characterized in that, The heating element further includes a support column and a spiral channel. The heating element is disposed in the spiral channel, which is wound around the side wall of the support column. The spiral channel has an air inlet and an air outlet.

4. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 3, characterized in that, The heating element is spirally wound around the side wall of the supporting column.

5. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 3, characterized in that, The heating component also includes a heating tray, and at least two supporting columns are provided, with the supporting columns arranged in an array on the heating tray.

6. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 1, characterized in that, An insulating and heat-conducting layer is also provided on the inner wall of the tube.

7. The air-heated non-combustible smoke appliance with a porous heating element as described in claim 1, characterized in that, The inner wall of the tube is also provided with a heat radiation layer.

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