Heating mechanism and electronic cigarette

Abstract

The application discloses a heating mechanism and an electronic cigarette, and relates to the technical field of electronic smoking sets. The heating mechanism comprises a cover body, a first cavity, a heating pipe and a second cavity. The first end of the first cavity is provided with a first opening. The cover body is fixedly connected with the first cavity, and the cover is arranged on the first opening. The heating pipe is arranged in the first cavity and is fixedly connected with the cover body. The heating pipe is used for heating a cigarette placed in the heating pipe. The first end of the second cavity is provided with a second opening. The second cavity is sleeved outside the first cavity and is arranged in a spaced mode with the first cavity, and is used for heat isolation of the first cavity. The cover body is fixedly connected with the second cavity, and the cover is arranged on the second opening. The application can improve the heat insulation effect of the heating mechanism and improve the heating rate of the heating pipe on the cigarette.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic smoking sets, in particular to a heating mechanism and an electronic cigarette. BACKGROUND

[0002] A heat-not-burn cigarette is heated at a heating temperature below the ignition point to generate smoke, thereby reducing the content of harmful substances generated in parallel. During use of the heat-not-burn cigarette, the heat-not-burn cigarette is usually placed in a heating tube of an electronic smoking set, and the heat-not-burn cigarette is heated by the heating tube to atomize the substances in the heat-not-burn cigarette to form smoke.

[0003] When the existing electronic smoking set heats the heat-not-burn cigarette, the outer side wall of the heating tube emits heat outward, resulting in poor heat insulation performance of the electronic smoking set, poor user experience, and slow heating rate of the heating tube for the cigarette. SUMMARY

[0004] Therefore, in order to solve the above technical problems, the present application provides a heating mechanism and an electronic cigarette.

[0005] To achieve the above-mentioned purpose, the present application provides an electronic cigarette, which comprises: a cover body; a first cavity, the first end of which is formed with a first opening, the cover body is fixedly connected with the first cavity, and the cover is arranged on the first opening; a heating tube, which is arranged in the first cavity and is fixedly connected with the cover body, the heating tube is used for heating a cigarette placed in the heating tube; a second cavity, the first end of which is formed with a second opening, the second cavity is sleeved outside the first cavity and is arranged in a spaced manner with the first cavity, and is used for heat insulation of the first cavity, the cover body is fixedly connected with the second cavity, and the cover is arranged on the second opening.

[0006] In order to solve the above-mentioned technical problems, another technical scheme adopted by the present application is to provide an electronic cigarette, which comprises a power supply mechanism and the above-mentioned heating mechanism, wherein the power supply mechanism is electrically connected with the heating mechanism and is used for providing electric energy for the heating mechanism.

[0007] Beneficial effects: Different from the prior art, the present application sets the heating tube in the first cavity and sets the first cavity in the second cavity, which can realize double-layer heat insulation of the first cavity and the second cavity, and the first cavity and the second cavity are arranged in a spaced manner, which can further improve the heat insulation effect and improve the user experience; at the same time, the heat of the heating tube is not easy to emit outward, the heat of the heating mechanism can be concentrated in the heating tube, and the heating rate of the heating tube for the cigarette can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a structural schematic view of an embodiment of the heating mechanism of the present application;

[0009] Figure 2 is Figure 1 A region of the structure of the consciousness of the enlarged diagram in the middle;

[0010] Figure 3 is Figure 2 B region of the structure of the enlarged diagram in the middle;

[0011] Figure 4 is Figure 2 C region of the structure of the enlarged diagram in the middle;

[0012] Figure 5 is Figure 1 D region of the structure of the enlarged diagram in the middle;

[0013] Figure 6 is Figure 1 The assembly structure diagram of the heating mechanism and the cigarette in the middle;

[0014] Figure 7 is Figure 1 The assembly structure of the cover, the first cavity and the second cavity of the heating mechanism in the middle is exploded diagram;

[0015] Figure 8 is Figure 1 The assembly structure of the cover, the connecting piece and the electrode sheet of the heating mechanism in the middle is enlarged diagram;

[0016] Figure 9 is Figure 1 The assembly structure of the cover and the connecting piece of the heating mechanism in the middle is exploded diagram;

[0017] Figure 10 is Figure 1 The connecting piece of the heating mechanism in the middle is enlarged diagram;

[0018] Figure 11 is Figure 1 The electrode sheet of the heating mechanism in the middle is enlarged diagram;

[0019] Figure 12 is Figure 1 The assembly structure of the electrode sheet and the heating tube of the heating mechanism in the middle is diagram;

[0020] Figure 13 is Figure 1 The structure diagram of the heating tube of the heating mechanism in the middle;

[0021] Figure 14 is Figure 1 The assembly structure of the elastic piece and the fixing piece in the middle is exploded diagram;

[0022] Figure 15 is the structure diagram of the heating mechanism of an embodiment of the application;

[0023] Figure 16is Figure 15 Assembling structure of heating mechanism and cigarette

[0024] Figure 17 is Figure 15 Structure of the side of the cover body in the heating mechanism which is away from the first cavity

[0025] Figure 18 is Figure 15 Oblique view of the side of the cover body in the heating mechanism which is close to the first cavity

[0026] Figure 19 is Figure 15 Structure of the first cavity in the heating mechanism

[0027] Figure 20 is the structure of the heating pipe of the present application

[0028] Figure 21 is the structure of the second cavity of the present application

[0029] Figure 22 is the assembling structure of the elastic member and the abutting member of the present application

[0030] Figure 23 is the structure of an embodiment of the electronic cigarette of the present application DETAILED DESCRIPTION

[0031] For those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor shall fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-8 , Figure 1 is the structure of an embodiment of the heating mechanism of the present application Figure 2 is Figure 1 Enlarged structure of area A in Figure 3 is Figure 2 Enlarged structure of area B in Figure 4 is Figure 2 Enlarged structure of area C in Figure 5 is Figure 1 Enlarged structure of area D in Figure 6 is Figure 1 Assembling structure of heating mechanism and cigarette Figure 7 is Figure 1An assembly structure between the cover, the first cavity and the second cavity of the heating mechanism Figure 8 is Figure 1 An enlarged schematic view of an assembly structure of the cover, the connecting piece and the electrode sheet of the heating mechanism.

[0033] As Figures 1-8 shown, the heating mechanism 10 comprises a cover 210, a first cavity 200, a heating tube 300 and a second cavity 800; wherein the first end of the first cavity 200 is formed with a first opening 201, the cover 210 is fixedly connected with the first cavity 200, and the cover is arranged on the first opening 201; the heating tube 300 is arranged in the first cavity 200, the cover 210 is fixedly connected with the heating tube 300, the heating tube 300 is used for heating a cigarette 20 placed in the heating tube 300, and the first end of the cigarette 20 is retained outside the heating tube 300; the first end of the second cavity 800 is formed with a second opening 801, the second cavity 800 is sleeved outside the first cavity 200, and is arranged in a spaced manner with the first cavity 200, and is used for heat insulation of the first cavity 200, the cover 210 is fixedly connected with the second cavity 800, and the cover is arranged on the second opening 801.

[0034] The cover 210 seals the gap 12 between the second cavity 800 and the first cavity 200.

[0035] The cover 210 comprises an upper cover piece 100 and a connecting piece 400. The upper cover piece 100 can be made of a non-heat-conducting material to avoid the temperature of one end of the cigarette 20 being higher than the human body temperature, and to improve the user experience.

[0036] As Figure 1 and Figure 7 shown, the upper cover piece 100 is provided with a first through hole 101, and is fixedly connected with the first cavity 200 and the second cavity 800; the first cavity 200 is formed with a first opening 201, the upper cover piece 100 is arranged on the first opening 201, and the first through hole 101 is in communication with the first opening 201; the heating tube 300 is arranged in the first cavity 200, and is arranged in a spaced manner with the side wall of the first cavity 200. As Figure 6 shown, the heating tube 300 is used for heating the cigarette 20 placed in the heating tube 300, and the first end of the cigarette 20 extends to outside the heating tube 300. As Figure 1 and Figure 6 shown, the gap 11 between the first cavity 200 and the heating tube 300 blocks the heat emitted by the heating tube 300 to the first cavity 200 when the heating tube 300 is heated, so as to reduce the heat loss. On the other hand, the gap 11 can also form an air exhaust channel with the first cavity 200 and the like (detailed below).

[0037] As Figure 1 and Figure 5As shown, the side wall of the heating tube 300 is provided with a third through hole 301. During suction, the third through hole 301 can guide the preheated air in the gap 11 between the first cavity 200 and the heating tube 300 into the heating tube 300, so as to recycle the heat radiated outward by the outer side wall of the heating tube 300, thereby reducing the waste of heat.

[0038] As shown in Figure 1 , Figure 2 , Figure 7 and Figure 8 , the connecting piece 400 is embedded in the first through hole 101 and is provided with a second through hole 401 and an air inlet portion 402 located at the periphery of the second through hole 401. The first end of the heating tube 300 is embedded in the second through hole 401 and is fixedly connected with the connecting piece 400, so that the heating tube 300 is suspended in the first cavity 200, the air inlet portion 402 is in communication with the gap 11 between the first cavity 200 and the heating tube 300, and the air inlet portion 402, the gap 11 between the first cavity 200 and the heating tube 300, the third through hole 301 and the pipeline 302 of the heating tube 300 form an air suction channel. With the preheated air in the gap 11 between the first cavity 200 and the heating tube 300 being guided to the heating tube 300, the air inlet portion 402 reintroduces external air into the gap 11 between the first cavity 200 and the heating tube 300, and the reintroduced external air can absorb not only the heat radiated outward by the outer side wall of the heating tube 300 but also the heat of the first cavity 200.

[0039] As shown in Figures 1-8 , in this embodiment, the upper cover 100 is provided with a first through hole 101, the first cavity 200 is formed with a first opening 201, the upper cover 100 is arranged on the first opening 201, and the first through hole 101 is in communication with the first opening 201; the connecting piece 400 is embedded in the first through hole 101 and is provided with a second through hole 401, and the first end of the heating tube 300 is embedded in the second through hole 401 and is fixedly connected with the connecting piece 400. Through the above-mentioned manner, the heating tube 300 is suspended in the first cavity 200 by the connecting piece 400, so that the heat in the heating tube 300 is not easily transferred to the first cavity 200, and thus the heat of the heating tube 300 is not easily radiated outward, the heat of the heating mechanism 10 can be concentrated in the heating tube 300, and the heating rate of the heating tube 300 to the cigarette 20 can be improved.

[0040] Preferably, the third through hole 301 can be arranged at the second end of the heating tube 300, i.e., the end of the heating tube 300 facing away from the upper cover 100. In this way, the airflow formed in the air suction channel can have a larger contact area with the outer side wall of the first cavity 200 and the heating tube 300, and the airflow has a better recycling effect on the heat of the first cavity 200 and the heat of the outer side wall of the heating tube 300.

[0041] In this embodiment, the cigarette 20 can be a heat-not-burn cigarette. For example, the cigarette 20 can include a filter (not shown), a tobacco tube (not shown), and a tobacco piece (not shown), wherein the filter can be connected to one end of the tobacco tube, and the tobacco piece can be arranged in the tobacco tube. The tobacco piece can be, but is not limited to, a member coated or adsorbed with tobacco tar (such as a sponge, a paper sheet, wood chips, etc.), tobacco leaves, or tobacco shreds. The tobacco piece can not burn and generate smoke when heated. For example, when the tobacco piece contains tobacco tar, the tobacco tar on the tobacco piece can be atomized to form smoke when heated. For example, when the tobacco piece contains tobacco leaves or tobacco shreds, part of the substances in the tobacco leaves or tobacco shreds in the tobacco piece can be atomized to form smoke when heated.

[0042] It should be understood that the heat-not-burn cigarette of the present application refers to that the tobacco piece in the cigarette will not be ignited at a preset heating temperature range. The preset heating temperature can be, but is not limited to, 80-150°C (such as 80°C, 100°C, 150°C), 100-300°C (100°C, 200°C, 300°C), or 120-250°C (120°C, 180°C, 250°C), and other temperature ranges that are below the ignition point of the tobacco piece.

[0043] The heating tube 300 can heat the cigarette 20 to atomize the substances in the cigarette 20 to form smoke. When smoked, the formed smoke can be guided to the human body through the air intake passage formed by the air intake portion 402, the gap 11 between the first cavity 200 and the heating tube 300, the third through hole 301, and the pipeline 302 of the heating tube 300.

[0044] Specifically, when smoked, the air intake portion 402 can act as an air intake hole. External air can flow through the air intake portion 402, the gap 11 between the first cavity 200 and the heating tube 300, the second through hole 301, and the heating tube 300 in sequence, and flow out from the end of the cigarette 20 located on the upper cover 100. In this way, the air intake portion 402 of the heating mechanism 10 acting as an air intake hole is arranged on the same side as the first end of the cigarette 20 acting as a smoking end relative to the heating mechanism 10.

[0045] As shown in FIGS. 1, 2, and 3, the heating tube 300 can be arranged in the first cavity 200. The heating tube 300 can be arranged in the first cavity 200 in a manner that the first end of the heating tube 300 is located in the first cavity 200 and the second end of the heating tube 300 is located outside the first cavity 200. Figure 1 、 Figure 2 、 Figure 4 As shown in FIGS. 1, 2, and 3, the end face of the first end of the heating tube 300 extends a branch portion 310, and the end face of the end of the connecting piece 400 away from the first cavity 200 is provided with a clamping portion 403. The branch portion 310 of the heating tube 300 is embedded in the clamping portion 403 to fixedly connect the heating tube 300 and the connecting piece 400.

[0046] Optionally, the engaging portion 403 extends in a direction away from the pipe 302 of the heating pipe 300 and communicates with the pipe 302 of the heating pipe, and the branch portion 310 is bent relative to the heating pipe 300 to be embedded in the engaging portion 403, so as to fixedly connect the heating pipe 300 and the connecting piece 400. In the above manner, when the heating pipe 300 needs to be assembled, the branch portion 310 is embedded in the engaging portion 403, so that the heating pipe 300 is arranged in the first cavity 200; when the heating pipe 300 needs to be disassembled, the branch portion 310 is withdrawn from the engaging portion 403, so that the heating pipe 300 is independently withdrawn from the first cavity 200; thus, when the heating pipe 300 needs to be replaced, the heating pipe 300 can be replaced independently, without the need to disassemble other parts, so that the replacement of the heating pipe 300 is facilitated.

[0047] The heating mode of the heating mechanism 10 can be that the heating pipe 300 is heated by being electrified, or the heating pipe 300 is heated by electromagnetic induction. When the heating pipe 300 is heated by being electrified, the heating pipe 300 can be provided with an electrically conductive portion (not shown in the figure), which is used to be electrically connected with a power supply, so that the power supply supplies power to the heating pipe 300 to make the heating pipe 300 generate heat. Specifically, the following implementation manner can be adopted:

[0048] Participate in Figures 1-3 And Figures 9-13 , Figure 9 is Figure 1 an assembly structure explosion diagram between the cover and the connecting piece of the heating mechanism in FIG. 4; Figure 10 is Figure 1 an enlarged diagram of the connecting piece of the heating mechanism in FIG. 4; Figure 11 is Figure 1 an enlarged diagram of the electrode sheet of the heating mechanism in FIG. 4; Figure 12 is Figure 1 an assembly structure diagram of the electrode sheet and the heating pipe of the heating mechanism in FIG. 4.

[0049] The heating mechanism 10 further comprises an electrode sheet 500, the connecting piece 400 is provided with a fourth through hole 404, the fourth through hole 404 leads through the gap 11 between the heating pipe 300 and the first cavity 200, the electrode sheet 500 is embedded in the fourth through hole 404, the heating pipe 300 is provided with an electrically conductive portion (not shown in the figure), a first end of the electrode sheet 500 is electrically connected with the heating pipe 300, and a second end of the electrode sheet 500 extends to outside of the connecting piece 400. The electrode sheet 500 is used to connect a power supply to provide electric energy to the heating pipe 300.

[0050] Further, refer to Figures 11-13 , Figure 13 is Figure 1 a structure diagram of the heating pipe of the heating mechanism in FIG. 4.

[0051] In this embodiment, the conductive part is the conductive area 320. The conductive area 320 can be arranged on the outer sidewall of the heating tube 300 (not shown in the figure) and is used to electrically connect the electrode sheet 500 to the heating tube 300.

[0052] Further, as shown in Figures 1-3 and Figure 11 , the second end of the electrode sheet 500 is provided with a lead hole 501. The electrode sheet 500 is electrically connected to a conductive wire (not shown in the figure) through the lead hole 501 to be electrically connected to a power supply through the conductive wire.

[0053] Optionally, in an embodiment, the first end of the electrode sheet 500 elastically abuts against the conductive area 320 to be electrically connected to the heating tube 300. In this way, the heating tube 300 can be independently disassembled or assembled from the electrode sheet.

[0054] Optionally, in another embodiment, the electrode sheet 500 is welded to the conductive area 320 to be electrically connected to the heating tube 300. In this way, the electrical connection between the electrode sheet and the heating tube 300 is more stable and firm.

[0055] The first end of the electrode sheet 500 elastically abuts against the conductive area 320 is taken as an example for description below.

[0056] As shown in Figures 1-3 and Figure 11 , specifically, the electrode sheet 500 can include an elastically curved subsection 510, an insertion subsection 520, a conductive connection subsection 530, and an elastically misaligned sheet 540. The insertion subsection 520 can be embedded in the fourth through hole 404, and the elastically curved subsection 510 and the conductive connection subsection 530 are respectively located at two ends of the insertion subsection 520. The elastically curved subsection 510 elastically abuts against the heating tube 300, and the conductive connection subsection 530 extends to the outside of the connecting piece 400. The lead hole 501 is arranged on the conductive connection subsection 530. In addition, the conductive connection subsection 530 is further provided with a deformation receiving hole 502. One end of the elastically misaligned sheet 540 is connected to the inner sidewall of the deformation receiving hole 502 away from the insertion subsection 520, and the other end of the elastically misaligned sheet 540 extends toward the end of the insertion subsection 520 close to the deformation receiving hole 502 and is misaligned with the deformation receiving hole 502 to abut against the connecting piece 400 to cooperate with the elastically curved subsection 510 to limit the electrode sheet 500 from being separated from the connecting piece 400. The elastically misaligned sheet 540 can be elastically collected in the deformation receiving hole 502 to enable the electrode sheet 500 to slide relative to the fourth through hole 404 to be separated from the fourth through hole 404. In this way, the electrode sheet 500 can be conveniently disassembled and assembled in the connecting piece 400.

[0057] Optionally, as shown in Figures 12-13As shown, the heating mechanism 10 includes a plurality of electrode plates 500 spaced apart circumferentially along the heating tube 300. In this embodiment, three examples are described, including a first electrode plate 500, a second electrode plate 500, and a third electrode plate 500. A first conductive region 320, a second conductive region 320, and a third conductive region 320 are spaced apart on the outer wall of the heating tube 300. The first electrode plate 500 is electrically connected to the first conductive region 320, the second electrode plate 500 is electrically connected to the second conductive region 320, and the third electrode plate 500 is electrically connected to the third conductive region 320. By connecting two different electrode plates 500 to a power source, different areas of the heating tube 300 can be heated to control the heating part and burning speed of the cigarette 20. Optionally, the heating resistance of the heating tube 300 can be 0.6 ohms to 0.8 ohms (e.g., 0.6 ohms, 0.7 ohms, 0.8 ohms).

[0058] like Figure 1 , Figure 5 , Figure 6 and Figure 14 As shown, the heating mechanism 10 further includes an elastic element 600, which is disposed inside the heating tube 300. The first end of the elastic element 600 is connected to the heating tube 300, and the second end of the elastic element 600 abuts against the second end of the cigarette 20.

[0059] In this embodiment, the elastic element 600 provides elastic support to abut the cigarette 20, thereby buffering the cigarette 20 and reducing or preventing damage to the cigarette 20 and the falling of residue.

[0060] like Figure 1 , Figure 5 , Figure 6 and Figure 14 As shown, the heating mechanism 10 further includes a fixing member 700.

[0061] The fixing member 700 is disposed inside the heating tube 300. The fixing member 700 includes an abutment portion 710 and a guide portion 720 arranged along the axial direction of the heating tube 300. The abutment portion 710 is fixedly connected to the heating tube 300 and seals the second end of the heating tube 300 to reduce heat dissipation from the second end of the heating tube 300. The elastic member 600 is covered on the guide portion 720, and its first end abuts against the abutment portion 710. The guide portion 720 is used to limit the extension and retraction direction of the elastic member 600 and guide the airflow entering the heating tube 300 through the third through hole 301 to the direction of the first opening 201.

[0062] The guide portion 720 is tapered and constricts in the direction away from the contact portion 710, which can increase the airflow into the heating tube 300 through the third through hole 301 and improve the guiding effect.

[0063] The projection of the elastic member 600 on the heating tube 300 along the radial direction of the heating tube 300 covers the third through hole 301. Thus, when the elastic member 600 elastically supports the second end of the cigarette 20, an airflow passage (not labeled in the figure) can be supported between the second end of the cigarette 20 and the third through hole 301, so that the air entering the heating tube 300 through the third through hole 301 will enter the cigarette 20 from the second end of the cigarette 20 through the airflow passage, making the air flow more smooth.

[0064] Further, in an embodiment, there is a gap (not shown in the figure) between the heating tube 300 and the cigarette 20, and the elastic member 600 can transmit heat to the abutting cigarette 20 to heat the second end of the cigarette 20, so as to enhance the heating effect of the heating tube 300 on the cigarette 20.

[0065] As shown in Figure 1 and Figure 7 , the heating mechanism 10 further comprises a second cavity 800, the second cavity 800 is formed with a second opening 801, the second cavity 800 is sleeved outside the first cavity 200 and is arranged in a spaced manner with the first cavity 200, for heat insulation of the first cavity 200, and the upper cover member 100 is covered on the second opening 801 to seal the gap 12 between the second cavity 800 and the first cavity 200.

[0066] In this embodiment, the second cavity 800 is sleeved outside the first cavity 200 and is arranged in a spaced manner with the first cavity 200, so that one end of the first cavity 200 away from the upper cover member 100 is arranged in a suspended manner in the second cavity 800, so that the heat in the first cavity 200 is not easily transmitted to the second cavity 800, and therefore the second cavity 800 has a good heat insulation effect on the first cavity 200. Thus, in this embodiment, the heat emitted outward by the outer side wall of the heating tube 300 is difficult to transmit to the second cavity 800, so the heat emitted outward by the outer side wall of the heating tube 300 is concentrated within the first cavity 200, and the airflow flowing through the gap 11 between the first cavity 200 and the heating tube 300 can effectively recover the heat in the first cavity 200.

[0067] The gap 12 between the second cavity 800 and the first cavity 200 can be configured as a vacuum gap.

[0068] Optionally, as shown in Figures 1-7As shown, the first cavity 200 and the second cavity 800 are cylindrical, and the first cavity 200, the second cavity 800, and the heating tube 300 are coaxially arranged; the inner diameter of the heating tube 300 is no greater than the outer diameter of the cigarette 20. For example, the inner diameter of the heating tube 300 is equal to the outer diameter of the cigarette 20. In this way, the smoke generated by the atomization of the substance inside the cigarette 20 can be prevented or reduced from escaping from the gap between the cigarette 20 and the heating tube 300.

[0069] In another embodiment, such as Figures 15 to 22 As shown, the cover 210 of the heating mechanism 10 in this embodiment includes a cover plate 110 and a first limiting part 120, a second limiting part 130 and a third limiting part 140 extending from the cover plate 110 along the axial direction of the heating tube 300 and close to the first cavity 200. The side wall of the second cavity 800 near the cover plate 110 is fixedly connected to the first limiting part 120, the side wall of the first cavity 200 near the cover plate 110 is fixedly connected to the second limiting part 130, and the side wall of the heating tube 300 near the cover plate 110 is fixedly connected to the third limiting part 140.

[0070] Optionally, the first limiting part 120, the second limiting part 130, and the third limiting part 140 are all annular limiting parts. The third limiting part 140 is used to space the second through hole 102a and the air intake part 101a apart from each other, and the heating tube 300 is fixed to the third limiting part 140 to communicate with the second through hole 102a. The second limiting part 130 is used to space the air intake part 101a apart from the first limiting part 120, the first cavity 200 is fixed to the second limiting part 130 to communicate with the air intake part 101a, and the second cavity 800 is fixed to the first limiting part 120 to be spaced apart from the first cavity 200, so that one end of the first cavity 200 facing away from the cover 210 is suspended in the second cavity 800. The fixing methods of the first limiting part 120 to the second cavity 800, the fixing methods of the second limiting part 130 to the first cavity 200, and the fixing methods of the third limiting part 140 to the heating tube 300 can be, but are not limited to, welding fixing, threaded connection fixing, snap-fit ​​connection fixing, or plug-in fixing.

[0071] Optionally, such as Figures 15-21 As shown, the first cavity 200 is a cylindrical cavity, the second cavity 800 is a cylindrical cavity, and the first cavity 200, the second cavity 800, and the heating tube 300 are coaxially arranged; the air inlet 101a and the pipe 302 of the heating tube 300 are offset axially from each other. The inner diameter of the second through hole 102a is not greater than the outer diameter of the cigarette 20. In this way, the smoke generated by the atomization of the substance inside the cigarette 20 can be prevented or reduced from escaping from the third gap (not shown) between the cigarette 20 and the second through hole 102. For example, the second through hole 102a can be equal to the outer diameter of the cigarette 20.

[0072] like Figure 15、 Figure 19 and Figure 20 As shown in FIG. 2, the first cavity 200 is provided with a groove at the end away from the cover 210, and the heating tube 300 is embedded in the groove to fix the heating tube 300.

[0073] Further, as shown in FIG. 3, the heating mechanism 10 comprises an elastic member 500a and an abutting member 600a. The elastic member 500a is arranged in the heating tube 300, and one end of the elastic member 500a abuts against the bottom wall of the first cavity 200. The abutting member 600a is arranged at the other end of the elastic member 500a. In use, the cigarette abuts against one end of the elastic member 500a. Figure 15 and Figure 22 As shown in FIG. 3, the heating mechanism 10 comprises an elastic member 500a and an abutting member 600a. The elastic member 500a is arranged in the heating tube 300, and one end of the elastic member 500a abuts against the bottom wall of the first cavity 200. The abutting member 600a is arranged at the other end of the elastic member 500a. In use, the cigarette abuts against one end of the elastic member 500a.

[0074] In this embodiment, the abutting member 600a is elastically supported by the elastic member 500a to abut against the cigarette 20, which plays a buffering role on the cigarette 20. In the event of external force impact, the elastic member 500a can buffer the external force impact to reduce or prevent the cigarette 20 from breaking and dropping debris.

[0075] Optionally, the elastic member 500a elastically supports the abutting member 600a such that the pipe 302 of the heating tube is configured as a passage segment 3021 between the abutting member 600a and the bottom wall of the first cavity 200 and a cigarette containing segment 3022 between the abutting member 600a and the cover 210. The passage segment 3021 is in communication with the cigarette containing segment 3022, and the passage segment 3021 is in communication with the third through hole 301a. The cigarette 20 is arranged in the cigarette containing segment 3022. In this way, the air entering the heating tube 300 through the third through hole 301a will enter the cigarette 20 arranged in the cigarette containing segment 3022 along the axial direction of the cigarette 20, so that the air circulation is more smooth.

[0076] Optionally, the abutting member 600a can be provided with a fifth through hole 601a for guiding the air in the passage segment 3021 into the cigarette 20 arranged in the cigarette containing segment 3022. Further, the abutting member 600a is provided with a receiving groove (not labeled in the figure) around the fifth through hole 601a on the side away from the cover 210, and the elastic member 500a extends into the receiving groove to elastically support the abutting member 600a, so that the abutting member 600a can be stably supported on the elastic member 500a.

[0077] Referring to Figure 23 , Figure 23 FIG. 1 is a structural schematic diagram of an electronic cigarette according to an embodiment of the present application.

[0078] As shown in FIG. 1, the electronic cigarette comprises a cigarette 20, a heating mechanism 10, a cover 210, and a power supply 30. Figure 23As shown, the electronic cigarette 30 can include the heating mechanism 10 in the above embodiments. Alternatively, the electronic cigarette 30 can further include a power supply mechanism 40 electrically connected with the heating mechanism 10, for providing electric energy for the heating mechanism 10.

[0079] The heating mechanism 10 in the embodiment of the electronic cigarette of the present application is the same as the heating mechanism 10 in the above embodiment, and thus will not be described herein.

[0080] The above is only an embodiment of the present application, and thus does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A heating mechanism, characterized by, The heating mechanism comprises: a cover; a first cavity with a first opening formed at a first end thereof, the cover is fixedly connected with the first cavity and covers the first opening; a heating tube arranged in the first cavity, the cover is fixedly connected with the heating tube, and the heating tube is used for heating a cigarette placed in the heating tube; a second cavity with a second opening formed at a first end thereof, the second cavity is sleeved outside the first cavity and is arranged in a spaced manner with the first cavity, and is used for heat insulation of the first cavity, the cover is fixedly connected with the second cavity and covers the second opening; wherein, an end of the first cavity away from the cover is arranged in a suspended manner in the second cavity; wherein, the cover comprises: an upper cover member provided with a first through hole and fixedly connected with the first cavity and the second cavity, the first through hole is in communication with the first opening; a connecting member embedded in the first through hole, the connecting member is provided with a second through hole, and a first end of the heating tube is embedded in the second through hole; wherein, an end surface of the first end of the heating tube extends a branch, the connecting member is provided with a clamping portion, and the branch of the heating tube is embedded in the clamping portion to fixedly connect the heating tube with the connecting member; wherein, the heating mechanism further comprises: an electrode sheet, the connecting member is provided with a fourth through hole in communication with a gap between the heating tube and the first cavity, the electrode sheet is embedded in the fourth through hole, a first end of the electrode sheet is electrically connected with the heating tube, and a second end of the electrode sheet extends out of the connecting member.

2. The heating mechanism according to claim 1, wherein The connecting member is provided with an air inlet portion; the heating tube is arranged in a spaced manner with a side wall of the first cavity, the side wall of the heating tube is provided with a third through hole, the air inlet portion and a gap between the first cavity and the heating tube are in communication, and the air inlet portion, the gap, the third through hole and a pipeline of the heating tube form an air exhaust channel.

3. The heating mechanism according to claim 1, wherein The first cavity is a cylindrical cavity, the second cavity is a cylindrical cavity, and the first cavity, the second cavity and the heating tube are coaxially arranged.

4. The heating mechanism according to claim 1, wherein Further comprising: a resilient member arranged in the heating tube and connected with the heating tube at a first end thereof, and abutting against a second end of the cigarette at a second end thereof.

5. The heating mechanism according to claim 4, wherein Further comprising: a fixing member arranged in the heating tube, the fixing member comprises an abutting portion and a guide portion arranged in an axial direction of the heating tube, the abutting portion is fixedly connected with the heating tube and seals a second end of the heating tube, and the resilient member is arranged on the guide portion and abuts against the abutting portion at a first end thereof.

6. The heating mechanism according to claim 5, wherein the guide portion is tapered and shrinks away from the abutting portion.

7. The heating mechanism according to claim 5, wherein a projection of the resilient member on the heating tube in a radial direction of the heating tube covers the second through hole.

8. An electronic cigarette, characterized in that, The heating mechanism according to any one of claims 1 to 7; a power supply mechanism electrically connected with the heating mechanism and used for providing electric energy for the heating mechanism. ​

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