A heat-not-burn smoking device providing airflow

Abstract

The present invention discloses a heat-not-burn smoking device that provides air flow, comprising a tube body, an air guide layer, a heating element, an air flow generating device and a power supply; the power supply is used to supply power to the heating element and the air flow generating device; the tube body comprises an upper cavity and a lower cavity, the air guide layer is arranged in the tube body, the upper cavity is located above the air guide layer, and the lower cavity is located below the air guide layer; the air guide layer is provided with air guide holes, and the upper cavity is used for placing cigarettes; the tube body is provided with an air inlet and an air outlet, the air inlet is arranged in the lower cavity, and the air outlet is arranged in the upper cavity; the heating element is arranged in the lower cavity, and the air flow generating device is arranged on one side of the tube body, for forming an air flow from the air heated by the heating element; the present invention can generate a hot air flow to uniformly preheat the cigarettes, and a larger amount of smoke can be generated when the smoking device is used for the first puff, thereby improving the smoking experience.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn smoking articles, and in particular to a heat-not-burn smoking article that provides airflow. Background Art

[0002] Currently, heat-not-burn devices primarily use needles or blades inserted into cigarettes for heating. This method can easily cause the heating needles and blades to break during insertion and removal, thus affecting usage. Furthermore, heating begins at the center of the cigarette and moves outwards, resulting in higher temperatures in the middle and lower temperatures around the edges, leading to uneven heating. Air heating, on the other hand, heats the cigarette by heating the air, creating an upward airflow that flows through the cigarette, thus heating it evenly.

[0003] However, air heating requires airflow to enter the cigarette to effectively heat it. Air heating relies solely on the natural rise of heated air, making it difficult for it to enter the cigarette itself and achieve natural heating. Therefore, when a user takes their first puff of smoke from a smoking device, the lack of air entering the cigarette results in uneven heating, resulting in a small amount of smoke. This first puff is needed to drive the heated air into the cigarette and evenly heat it, so the user often needs to take a second puff to form a larger amount of smoke.

[0004] Patent document CN212678368U discloses a heat-not-burn tobacco combustion-supporting device. The technical proposal describes a heat-not-burn tobacco device with an airflow generator. The airflow generator is designed to generate combustion-supporting gas to improve fuel combustion efficiency. The heat generated by combustion is converted into electricity using a thermoelectric converter, which powers the heating element and heats the tobacco, eliminating the need for a power source. While the proposal describes an airflow generator capable of generating airflow, its function is solely to provide combustion-supporting gas to the fuel and does not address the issue of air heating cigarettes. Summary of the Invention

[0005] The object of the present invention is to provide a heat-not-burn smoking device that provides airflow, which can generate hot airflow to uniformly preheat cigarettes, and can generate a large amount of smoke when taking the first puff using the smoking device, thereby improving the smoking experience.

[0006] The present invention provides a heat-not-burn smoking device that provides airflow, comprising a tube body, an air guide layer, a heating element, an airflow generating device and a power supply; the power supply is used to supply power to the heating element and the airflow generating device.

[0007] The tube body includes an upper cavity and a lower cavity. The air-guiding layer is arranged in 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, and the upper cavity is used for placing cigarettes.

[0008] The tube body is provided with an air inlet and an air outlet, the air inlet is arranged in the lower cavity, and the air outlet is arranged in the upper cavity; the heating element is arranged in the lower cavity, and the air flow generating device is arranged on one side of the tube body, and is used to form an air flow from the air heated by the heating element.

[0009] Furthermore, the heating element is tubular.

[0010] Furthermore, a heating through hole is provided on the side wall of the heating element.

[0011] Furthermore, the heating element is in the shape of an elongated strip, and is bent to form a plurality of folded portions.

[0012] Furthermore, the heating element is in the shape of an elongated strip and is spirally arranged.

[0013] Furthermore, the heating element includes at least one heating net.

[0014] Furthermore, the heating element includes at least one heating tray and a plurality of heating columns, and the heating columns are fixedly connected to the heating tray.

[0015] Furthermore, there are two heating trays in total, and both ends of the heating column are fixedly connected to the two heating trays respectively, and the heating trays are provided with heating through holes.

[0016] Furthermore, an insulating layer is provided between the air-conducting layer and the heating element, and an insulating through-hole is provided on the insulating layer.

[0017] Furthermore, a heat insulation layer is provided on the side wall of the lower cavity.

[0018] Furthermore, the heating element is attached to the side wall of the lower cavity.

[0019] Furthermore, a radiation layer is provided on the side wall of the lower cavity.

[0020] The beneficial effects of the present invention are:

[0021] The present invention heats the air through the heating element and uses the airflow generating device to push the heated air to form a hot airflow, so that the hot airflow passes through the air guide layer into the cigarette located in the upper cavity, uniformly heating the cigarette, thereby completing the preheating of the cigarette before the user inhales. When the user uses the smoking device to take the first puff, a larger amount of smoke can be generated, thereby improving the smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a side structural schematic diagram of the first embodiment of the present invention.

[0024] Figure 3 It is a schematic cross-sectional structural diagram of the first embodiment of the present invention.

[0025] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0026] Figure 5 Schematic diagram of the structure of the heating element in the first embodiment of the present invention.

[0027] Figure 6 Schematic diagram of the cross-sectional structure of the second embodiment of the present invention.

[0028] Figure 7 Schematic diagram of the structure of the heating element in the second embodiment of the present invention.

[0029] Figure 8 2 is a schematic cross-sectional structural diagram of a third embodiment of the present invention.

[0030] Figure 9 Schematic diagram of the structure of the heating element in the third embodiment of the present invention.

[0031] Figure 10 Schematic diagram of the structure of the folding portion in the third embodiment of the present invention.

[0032] Figure 11 2 is a schematic cross-sectional structural diagram of a fourth embodiment of the present invention.

[0033] Figure 12 Schematic diagram of the structure of the heating element in the fourth embodiment of the present invention.

[0034] Figure 13 FIG. 4 is a schematic cross-sectional structural diagram of a fifth embodiment of the present invention.

[0035] Figure 14 Schematic diagram of the structure of the heating element in the fifth embodiment of the present invention.

[0036] Figure 15FIG. 4 is a schematic cross-sectional structural diagram of a sixth embodiment of the present invention.

[0037] Figure 16 Schematic diagram of the structure of the heating element in the sixth embodiment of the present invention.

[0038] Figure markings: 1. Tube body; 11. Upper cavity; 12. Lower cavity; 13. Air inlet; 14. Air outlet; 15. Mounting plate; 16. Connecting through hole; 2. Air guide layer; 21. Air guide through hole; 3. Heating element; 30. Electrode; 31. Heating through hole; 32. Radiating layer; 33. Folding part; 34. Heating net; 35. Heating tray; 36. Heating column; 4. Air flow generating device; 5. Insulating layer; 51. Insulating through hole; 6. Thermal insulation layer; 7. Mounting bracket; 71. Mounting seat; 72. Connecting rod; 8. Power supply. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

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

[0041] First embodiment

[0042] See also Figure 1-Figure 3 A heat-not-burn smoking device that provides airflow provided in the first embodiment of the present invention includes a tube body 1, an air guide layer 2, a heating element 3, an airflow generating device 4 and a power supply 8; the power supply 8 is used to supply power to the heating element 3 and the airflow generating device 4.

[0043] The tube body 1 includes an upper cavity 11 and a lower cavity 12. The air-guiding layer 2 is arranged in 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 through hole 21, and the upper cavity 11 is used for placing cigarettes.

[0044] The tube body 1 is provided with an air inlet 13 and an air outlet 14, the air inlet 13 is arranged in the lower cavity 12, and the air outlet 14 is arranged in the upper cavity 11; the heating element 3 is arranged in the lower cavity 12, and the airflow generating device 4 is arranged on one side of the heating element 3, for forming an airflow from the air heated by the heating element 3.

[0045] During use, a cigarette is placed in the upper cavity 11 and abutted against the air guide layer 2, the heating element 3 and the airflow generating device 4 are started, the heating element 3 generates heat and heats the air in the lower cavity 12, and the airflow generating device 4 pushes the heated air in the lower cavity 12 to form a hot airflow, which passes through the air guide holes 21 in the air guide layer 2 and enters the cigarette in the upper cavity 11, thereby being able to preheat the cigarette quickly and evenly. Therefore, the user can generate a larger amount of smoke when taking the first puff using the smoking device, thereby improving the smoking experience.

[0046] Preferably, see Figure 3 In this embodiment, the airflow generating device 4 is preferably arranged on a side of the heating element 3 away from the air guide layer 2 .

[0047] Specifically, the position of the airflow generating device 4 can be adjusted according to the shape of the heating element, so as to achieve the purpose of pushing the air heated by the heating element 3 to form an airflow and enter the upper cavity 11 to heat the cigarette.

[0048] In other embodiments, the position of the airflow generating device 4 can also be set between the heating element 3 and the air guide layer 2; the position of the airflow generating device 4 can also be set inside the heating element 3; the airflow generating device 4 can also be set on the rear side of the air guide layer 2 in the direction of airflow flow, and guide the air heated by the heating element 3 to form a hot airflow into the upper cavity 11 by exhausting air to heat the cigarette.

[0049] The airflow generating device 4 in this embodiment is a fan, preferably an axial flow fan, which can push the air to flow in the same direction as the axis; it can also be other devices that can generate airflow.

[0050] Specifically, the tube body is made of heat-insulating material, so the tube body has heat-insulating properties. The tube body can be a quartz tube or a glass tube, or a stainless steel tube or an alumina tube with a double-layer or multi-layer structure.

[0051] Specifically, the air inlet 13 is provided on one side of the tube body of the lower cavity 12 ; in this embodiment, the air inlet 13 is provided on one side of the airflow generating device 4 .

[0052] Specifically, the gas-conducting layer can be copper, aluminum metal or metal alloy, or a silicon porous structure or a grid structure, or a thermally conductive ceramic with added thermal conductive fibers. The fibers can be carbon fibers, copper, aluminum metal fibers, or aluminum nitride fibers. The fiber content is preferably less than 30%, and the ceramic matrix can be aluminum nitride.

[0053] Further, see Figure 3 and Figure 4 An insulating layer 5 is further provided between the air-conducting layer 2 and the heating element 3, and an insulating through-hole 51 is provided on the insulating layer 5; wherein the material of the insulating layer 5 can be aluminum oxide, aluminum nitride or aluminum carbide; the shape of the insulating through-hole 51 can be circular, elliptical, rectangular, regular polygonal, etc.

[0054] Specifically, the upper side of the insulating layer 5 abuts against the air guide layer 2, and the lower side of the insulating layer 5 abuts against the heating element 3; since the air guide layer 2 generally adopts a conductive material, the insulating layer 5 is provided between the heating element 3 and the air guide layer 2. On the one hand, when the air guide layer is conductive, the insulating layer 5 can prevent the heating element 3 from contacting the air guide layer 2 and causing a short circuit in the heating element 3; on the other hand, the insulating layer 5 can also transfer the heat of the heating element 3 to the air guide layer 2 by heat conduction, and the air guide layer 2 then heats the cigarette by heat conduction, thereby further improving the heating effect on the cigarette.

[0055] Further, see Figure 3 and Figure 4 The side wall of the lower cavity 12 is provided with a heat insulation layer 6. Specifically, the heat insulation layer 6 is integrally formed with the air guide layer 2; wherein, the heat insulation layer 6 can be a vacuum insulation tube, heat insulation cotton or aerogel.

[0056] Further, see Figure 3 The tube body 1 is also provided with a mounting bracket 7 for mounting the airflow generating device 4. Specifically, the mounting bracket 7 includes a mounting seat 71 and at least two connecting rods 72. The airflow generating device 4 passes through and is mounted on the mounting seat 71. One end of each connecting rod 72 is fixedly connected to the mounting seat 71, and the other end of each connecting rod 72 is fixedly connected to the inner sidewall of the tube body 1 or the thermal insulation layer 6. In this embodiment, three connecting rods 72 are provided, and the three connecting rods 72 are fixedly connected to the mounting seat 71 at symmetrical intervals with the mounting seat 71 as the center of symmetry.

[0057] In this embodiment, one end of the connecting rod 72 is integrally connected to the mounting seat 71 , and the other end of the connecting rod 72 is integrally connected to the heat insulation layer 6 .

[0058] Specifically, see Figure 1 and Figure 3 The power supply 8 is installed on the outside of the tube body 1. A mounting plate 15 for mounting the power supply 8 is integrally formed on the outer wall of the tube body 1. A connecting through hole 16 is opened on one side of the mounting plate 15 of the tube body 1.

[0059] Specifically, the heating element 3 is further connected to an electrode 30 , and the electrode 30 includes a positive electrode and a negative electrode 30 . The heating element 3 is electrically connected to the power supply 8 via the two electrodes 30 ; the airflow generating device 4 is electrically connected to the power supply 8 .

[0060] In this example, see Figure 3 and Figure 5 The two electrodes 30 are respectively connected to the lower end openings of the heating element 3; the heating element 3 is electrically connected to the power supply 8 through the connecting through-hole 16 via the electrodes 30; the airflow generating device 4 is electrically connected to the power supply 8 through the connecting through-hole 16 via a wire.

[0061] See also Figure 3 and Figure 5 In this embodiment, the heating element 3 is a tubular structure; specifically, one end of the heating element 3 is opened toward the air guide layer 2, and the other end of the heating element 3 is opened toward the airflow generating device 4; when the smoking device is used, the heating element 3 heats the air in the lower cavity 12, and the airflow generating device 4 pushes the air in the lower cavity 12 to form an airflow, which enters the heating element 3 from one end opening while heating it, and then flows out from the other end opening of the heating element 3 to form a hot air flow through the air guide hole 21 into the upper cavity 11 to heat the cigarette.

[0062] The heating element may be made of metal, preferably nickel or stainless steel; or a metal alloy, preferably iron-chromium-aluminum; or a porous carbon material, preferably porous graphite, carbon fiber, etc.

[0063] In other embodiments based on this embodiment, a gap is provided between the side wall of the heating element 3 and the side wall of the lower cavity 12 (not shown in the figure), and the thermal insulation layer 6 is further provided with a radiation layer 32 on the side away from the side wall of the tube body 1, which is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. At the same time, the reflected thermal radiation heats the air again, thereby increasing the heating speed of the air.

[0064] Specifically, the radiation layer 32 may be an aluminum layer or a carbon layer.

[0065] In this example, see Figure 3 and Figure 4 The side wall of the heating element 3 is attached to the side wall of the lower cavity 12.

[0066] Second embodiment.

[0067] See also Figure 6 and Figure 7The heat-not-burn smoking device providing airflow provided in the second embodiment of the present invention differs from the first embodiment in that, in this embodiment, the sidewall of the heating element 3 is provided with a heating through hole 31. Thus, by providing the heating through hole 31 on the sidewall of the heating element 3, the contact area between the heating element 3 and the air in the lower cavity 12 is increased, thereby improving the heating speed.

[0068] The shape of the heat-generating through hole 31 can be circular, elliptical, triangular, rectangular or regular polygonal, and is preferably rectangular in this embodiment.

[0069] In other embodiments based on this embodiment, a gap is provided between the side wall of the heating element 3 and the side wall of the lower cavity 12 (not shown in the figure), and the thermal insulation layer 6 is further provided with a radiation layer 32 on the side away from the side wall of the tube body 1, which is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. At the same time, the reflected thermal radiation heats the air again, thereby increasing the heating speed of the air.

[0070] In this example, see Figure 6 The side wall of the heating element 3 is attached to the side wall of the lower cavity 12.

[0071] Third embodiment.

[0072] Please refer to the picture Figures 8-10 The difference between the heat-not-burn smoking device providing airflow provided in the third embodiment of the present invention and the first embodiment is that in this embodiment, the heating element 3 is in the shape of an elongated strip, and the heating element 3 is bent to form a plurality of folded portions 33. The folded portions 33 are in a U-shape, and the openings of adjacent folded portions 33 are opposite to each other. For the specific structure of the folded portion, please refer to Figure 10 , Figure 10 3 is a schematic structural diagram of a folded portion 33 of the heating element 3 in this embodiment. In the figure, the opening of the folded portion 33 is located at the lower side.

[0073] In other embodiments based on this embodiment, the folded portion 33 may also be V-shaped. With the above configuration, the volume required for the heating element 3 is small, the area in contact with the air is large, the heating efficiency is high, and the production cost is reduced.

[0074] In other embodiments based on this embodiment, a gap is provided between the side wall of the heating element 3 and the side wall of the lower cavity 12 (not shown in the figure), and the thermal insulation layer 6 is further provided with a radiation layer 32 on the side away from the side wall of the tube body 1, which is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. At the same time, the reflected thermal radiation heats the air again, thereby increasing the heating speed of the air.

[0075] In this example, see Figure 6 The side wall of the heating element 3 is attached to the side wall of the lower cavity 12.

[0076] Fourth embodiment.

[0077] See also Figure 11 and Figure 12 The difference between the heat-not-burn smoking device providing airflow provided by the fourth embodiment of the present invention and the first embodiment is that, in this embodiment, the heating element 3 is in the shape of an elongated strip and is spirally arranged.

[0078] With the above arrangement, after the spirally arranged heating element 3 heats the air in the lower cavity 12 , the air can form a spirally rising hot air flow, which can heat the cigarettes in the upper cavity 11 more evenly.

[0079] Specifically, the outer diameter of the heating element 3 gradually decreases from bottom to top. This facilitates the convergence of the spiral hot air flow formed after heating toward the center, making it easier for the hot air flow to enter the interior of the cigarette, thereby improving the heating effect. The electrodes 30 are respectively connected to both ends of the heating element 3.

[0080] Specifically, see Figure 11 The heat-insulating layer 6 is further provided with a radiation layer 32 on a side away from the sidewall of the tube body 1. This layer is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. The reflected thermal radiation then reheats the air, increasing the heating rate. Specifically, a gap is provided between the heating element 3 and the sidewall of the lower cavity 12.

[0081] Fifth embodiment.

[0082] See also Figure 13 and Figure 14 The fifth embodiment of the present invention provides a heat-not-burn smoking device that provides airflow. The difference from the first embodiment is that, in this embodiment, the heating element 3 includes at least one heating net 34 .

[0083] Specifically, the heating body 3 includes three heating nets 34, which are arranged at equal intervals between each other; the electrode 30 is arranged in a columnar shape, and two of the electrodes 30 are respectively connected to the three heating nets 34. In this way, the two electrodes 30 can not only provide support for the heating nets 34, but also the heating nets 34 can be electrically connected to the power supply 8 through the two electrodes 30.

[0084] Specifically, see Figure 13The heat-insulating layer 6 is further provided with a radiation layer 32 on a side away from the sidewall of the tube body 1. This layer is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. The reflected thermal radiation then reheats the air, increasing the heating rate. Specifically, a gap is provided between the heating element 3 and the sidewall of the lower cavity 12.

[0085] Sixth embodiment.

[0086] See also Figure 15 and Figure 16 The difference between the heat-not-burn smoking device providing airflow provided in the fifth embodiment of the present invention and the first embodiment mentioned above is that, in this embodiment, the heating element 3 includes at least one heating tray 35 and a plurality of heating columns 36, and the heating columns 36 are fixedly connected to the heating tray 35.

[0087] Specifically, there are two heating trays 35 , and both ends of the heating column 36 are fixedly connected to the two heating trays 35 . The heating trays 35 are provided with heating through holes 31 , and the heating column 36 is connected to the gap between the heating through holes 31 .

[0088] Among them, the heating through holes 31 can be arranged on the heating tray 35 in an orderly or disorderly manner; the shape of the heating through holes 31 can be circular, elliptical, triangular, rectangular or regular polygonal, and the cross-section of the heating column 36 can be circular, elliptical, triangular, rectangular or regular polygonal; in this embodiment, the shape of the heating through holes 31 is preferably circular, and the apertures of the heating through holes 31 can be of uniform size or of different sizes; the heating through holes 31 are preferably arranged on the heating tray in an orderly manner, specifically, the number of the heating through holes 31 arranged at the center position of the heating tray 35 is greater than the number at the peripheral positions of the heating tray 35; the heating through holes 31 can also be arranged on the heating tray 35 in a disorderly manner; the cross-section of the heating column 36 is preferably rectangular.

[0089] Specifically, the two heating trays 35 are correspondingly arranged up and down, one electrode 30 is connected to the heating tray 35 located on the upper side, and the other electrode 30 is connected to the heating tray 35 located on the lower side.

[0090] Specifically, see Figure 15 The heat-insulating layer 6 is further provided with a radiation layer 32 on a side away from the sidewall of the tube body 1. This layer is used to reflect the thermal radiation generated by the heating element 3, thereby reducing heat loss. The reflected thermal radiation then reheats the air, increasing the heating rate. Specifically, a gap is provided between the heating element 3 and the sidewall of the lower cavity 12.

[0091] 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 modifications or substitutions that can be easily conceived by a person 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 based on the scope of protection of the claims.

Claims

1. A heat-not-burn smoking device that provides airflow, characterized in that: It includes a tube body, an air guide layer, a heating element, an airflow generating device and a power supply; the power supply is used to supply power to the heating element and the airflow generating device; The tube body includes an upper cavity and a lower cavity. The air guide layer is arranged in the tube body, the upper cavity is located above the air guide layer, and the lower cavity is located below the air guide layer. The air guide layer is provided with air guide holes, and the upper cavity is used to place cigarettes. The tube body is provided with an air inlet and an air outlet, the air inlet is arranged in the lower cavity, and the air outlet is arranged in the upper cavity; the heating element is arranged in the lower cavity, and the air flow generating device is arranged on one side of the tube body, for forming an air flow from the air heated by the heating element; An insulating layer is further provided between the air guide layer and the heating element, wherein the upper side of the insulating layer abuts against the air guide layer, and the lower side of the insulating layer abuts against the heating element. The insulating layer is used to transfer the heat of the heating element to the air guide layer and the cigarette in sequence by heat conduction; the insulating layer is provided with insulating through holes; The insulating layer is made of aluminum oxide, aluminum nitride or aluminum carbide, and the gas conducting layer is made of copper, aluminum metal or metal alloy; The airflow generating device pushes the heated air in the lower cavity to form a hot airflow, which passes through the air guide holes in the air guide layer and enters the cigarette in the upper cavity.

2. The heat-not-burn smoking device providing airflow according to claim 1, wherein: The heating element is tubular.

3. The heat-not-burn smoking device providing airflow according to claim 2, wherein: A heating through hole is provided on the side wall of the heating element.

4. The heat-not-burn smoking device providing airflow according to claim 1, wherein: The heating element is in the shape of an elongated strip and is bent to form a plurality of folded portions.

5. The heat-not-burn smoking device providing airflow according to claim 1, wherein: The heating element is in the shape of an elongated strip and is spirally arranged.

6. The heat-not-burn smoking device providing airflow according to claim 1, wherein: The heating element includes at least one heating net.

7. The heat-not-burn smoking device providing airflow according to claim 1, wherein: The heating element includes at least one heating tray and a plurality of heating columns, and the heating columns are fixedly connected to the heating tray.

8. The heat-not-burn smoking device providing airflow according to claim 7, wherein: There are two heating trays in total, and both ends of the heating column are fixedly connected to the two heating trays respectively. The heating trays are provided with heating through holes.

9. The heat-not-burn smoking device providing airflow according to any one of claims 1 to 8, characterized in that: A heat insulation layer is also provided on the side wall of the lower cavity.

10. The heat-not-burn smoking device providing airflow according to any one of claims 2 to 4, characterized in that: The heating element is attached to the side wall of the lower cavity.

11. The heat-not-burn smoking device providing airflow according to any one of claims 1 to 8, characterized in that: A radiation layer is also provided on the side wall of the lower cavity.

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