Heating assembly and electronic atomization device

Abstract

The invention provides a heating assembly and an electronic atomization device. A sleeve is at least partially arranged outside a heating body in a sleeving mode. The heating body comprises a tubular part and a flexible part which are sequentially connected in the axial direction, one end of the flexible part is connected to the tubular part, and the other end of the flexible part extends outwards in the axial direction and the radial direction away from the tubular part. The sleeve can move between the tubular part and the flexible part in the axial direction of the heating body, so that the flexible part is expanded or contracted in the radial direction, and the actual heating area of the flexible part in the axial direction of the heating body is reduced or increased. The heating body comprises a tubular part and a flexible part, the heating body is sleeved with the sleeve, and the sleeve can move back and forth between the tubular part and the flexible part. Through the movement of the sleeve, the flexible part can be contracted or expanded in the radial direction, so that the actual heating area of aerosol generated by the cigarette under the action of the heating body on the cigarette can be adjusted, multiple groups of circuits do not need to be arranged on the heating body, and the structure is simple.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic atomization, and particularly relates to a heating component and an electronic atomization device. Background Art

[0002] For a heat-not-burn electronic atomization device, since the cigarette contains moisture, after the cigarette is preheated, the moisture evaporates and accumulates in the internal cavity of the cigarette. When taking the first puff, the high-temperature water vapor often has the risk of scalding the mouth or even causing burns. The current mainstream solution is that the heating element adopts a segmented heating method, that is, two or more groups of circuits are arranged in the axial direction of the heating tube, and each group of circuits is controlled by a separate lead wire. By local heating, the generation of water vapor is reduced, so as to achieve the purpose of reducing the scalding feeling. However, this method has a complex circuit for the heating tube. Summary of the Invention

[0003] The technical object of the present invention is to provide a heating component and an electronic atomization device, aiming to solve the technical problem of the complex circuit of the heating tube in the related art of heat-not-burn smoking devices.

[0004] To solve the above technical problem, the present invention is implemented as follows. A heating component includes: a heating element and a sleeve; at least part of the sleeve is sleeved outside the heating element; the heating element includes a tubular part and a flexible part connected in sequence along the axis, one end of the flexible part is connected to the tubular part, and the other end extends axially and radially outward away from the tubular part; the sleeve can move axially along the heating element between the tubular part and the flexible part, so that the flexible part expands or contracts radially, so as to reduce or increase the actual heating area of the flexible part in the axial direction of the heating element.

[0005] Further, the flexible part includes a plurality of flexible sheets, each flexible sheet is arranged at one end of the tubular part, and is arranged at intervals in sequence along the circumferential direction of the tubular part; when the sleeve moves axially along the heating element from the tubular part to the flexible part, each flexible sheet gradually contracts to increase the actual heating area of the flexible part; when the sleeve moves axially along the heating element from the flexible part to the tubular part, each flexible sheet gradually expands to reduce the actual heating area of the flexible part.

[0006] Further, the sleeve includes a first sleeve and a second sleeve; the first sleeve is sleeved on the outer peripheral side of the heating element, and the first sleeve can move axially along the heating element between the tubular part and the flexible part to be used for changing the radial expansion or contraction of the flexible part; the second sleeve is arranged at one end of the flexible part away from the tubular part, and the second sleeve is provided with an abutting part for abutting against the inner side of the flexible part.

[0007] Further, the first sleeve and the second sleeve are fixedly assembled, and both the first sleeve and the second sleeve can move axially along the heating element.

[0008] Further, a curled edge is provided at one end of the flexible portion away from the tubular portion, the curled edge is bent toward the tubular portion, and the abutting portion is used to abut against the inner side of the curled edge.

[0009] Further, the first sleeve includes a main body portion and an extension portion connected between the main body portion and the second sleeve; when the flexible portion is in the first state, the inner side wall of the main body portion abuts against the outer side wall of the tubular portion, and there is a gap between the inner side wall of the extension portion and the outer peripheral side of the flexible portion; when the flexible portion is in the second state, the inner side wall of the main body portion abuts against the outer side of the flexible portion.

[0010] Further, the heating assembly further includes a base tube, and the base tube is disposed through the heating element; the sleeve moves axially along the heating element to adjust the contact area of the heating element in the axial direction of the base tube.

[0011] Further, the base tube includes a first portion and a second portion connected to one end of the first portion; the outer peripheral side of the first portion abuts against the inner side wall of the tubular portion; when the sleeve moves axially along the heating element from the tubular portion to the flexible portion, the contact area between the flexible portion and the second portion gradually increases; when the sleeve moves axially along the heating element from the flexible portion to the tubular portion, the contact area between the flexible portion and the portion gradually decreases.

[0012] Further, the thermal conductivity of the base tube is greater than 10 W / (m·K).

[0013] Further, the heating assembly further includes a driving device, and the driving device is connected to the sleeve to move the sleeve axially between the tubular portion and the flexible portion along the heating element.

[0014] Further, the driving device includes a motor and a gear transmission mechanism electrically connected to the output end of the motor, and the gear transmission mechanism is connected to the sleeve.

[0015] Further, an electronic atomization device includes a power supply assembly and the heating assembly as described above, and the power supply assembly is connected to the heating element.

[0016] In the heating assembly and the electronic atomization device of the present invention, compared with the related art, the beneficial effects are as follows:

[0017] The heating element includes a tubular part and a flexible part. A sleeve is sleeved outside the heating element, and the sleeve can axially move between the tubular part and the flexible part. By simply moving the sleeve, the flexible part can be radially expanded or contracted, so that the actual heating area of the heating element acting on the cigarette to generate aerosol can be adjusted, and there is no need to arrange multiple sets of circuits on the heating element, and the structure is simple. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0019] Figure 1 is a cross-sectional view of the electronic atomization device when the flexible part is expanded in the embodiment of the present invention;

[0020] Figure 2 is Figure 1 an enlarged view of detail A;

[0021] Figure 3 is Figure 1 an enlarged view of detail B;

[0022] Figure 4 is a cross-sectional view of the electronic atomization device when the flexible part is contracted in the embodiment of the present invention;

[0023] Figure 5 is Figure 4 an enlarged view of detail A;

[0024] Figure 6 is Figure 4 an enlarged view of detail B;

[0025] Figure 7 is an exploded view of the heating component and the driving device in the embodiment of the present invention;

[0026] Figure 8 is a schematic structural diagram of the heating element in the embodiment of the present invention.

[0027] In the drawings, each reference numeral represents:

[0028] 1. Heating element; 11. Tubular part; 12. Flexible part; 121. Flexible sheet; 122. Hem;

[0029] 2. Sleeve; 21. First sleeve; 211. Main body part; 212. Extension part; 22. Second sleeve; 221. Abutting part;

[0030] 3. Driving device; 31. Gear; 32. Rack; 33. Motor;

[0031] 4. Cigarette; 5. First bracket; 6. Second bracket; 7. Power supply component; 8. Substrate tube. Specific embodiments

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] Please refer to Figures 1 - 8 , the embodiments of the present invention provide an electronic atomization device, including a power supply component 7 and a heating component. The heating component includes a heating element 1 and a sleeve 2. The heating element 1 is connected to the power supply component 7; the sleeve 2 is at least partially sleeved outside the heating element 1; the heating element 1 includes a tubular portion 11 and a flexible portion 12 connected in sequence along the axial direction. One end of the flexible portion 12 is connected to the tubular portion 11, and the other end extends axially and radially away from the tubular portion 11; the sleeve 2 can move axially along the heating element 1 between the tubular portion 11 and the flexible portion 12, so that the flexible portion 12 expands or contracts radially to reduce or increase the actual heating area of the flexible portion in the axial direction of the heating element 1.

[0036] In this embodiment, the heating element 1 includes a tubular portion 11 and a flexible portion 12. The extension direction of the flexible portion 12 connected to the end of the tubular portion 11 is set at an angle with the axis of the tubular portion 11, and the angle is an acute angle. The sleeve 2 is sleeved outside the heating element 1, and the sleeve 2 can axially move between the tubular portion 11 and the flexible portion 12, so that the flexible portion 12 expands or contracts radially, thereby adjusting the heating area actually acting on the cigarette rod 4 by the heating element 1, and the heating area for the cigarette rod 4 can be enlarged or reduced according to actual needs.

[0037] In the preheating stage, the tubular portion 11 heats the first area of the cigarette rod 4, so that the first area of the cigarette rod 4 is heated to a high temperature. Please refer to Figures 1 - 3 , the flexible portion 12 is in an initial state, the flexible portion 12 is in a radially expanded state, and the second area of the cigarette rod 4 cannot be heated by the flexible portion 12. Therefore, for the cigarette rod 4, less water vapor is generated, and the problem of scalding the mouth during the first puff can be solved. After the preheating is completed, please refer to Figures 4 - 6 , the sleeve 2 moves from the tubular portion 11 to the flexible portion 12, so that the flexible portion 12 gradually contracts radially, so that the flexible portion 12 can heat the second area of the cigarette rod 4, that is, the heating area of the heating element 1 can be increased, and the whole cigarette rod 4 is heated. After the heating is completed, please refer to Figures 1 - 3 , the sleeve 2 moves from the flexible portion 12 towards the tubular portion 11, so that the flexible portion 12 returns to the expanded state, thereby reducing the actual heating area of the heating element 1 on the cigarette rod 4. By moving the sleeve 2, the flexible portion 12 can expand or contract radially, thereby adjusting the actual heating area of the heating element 1 on the cigarette rod 4, so that the moisture and substances in the second area of the cigarette rod 4 are evenly released during the suction process. Compared with the existing segmented heating technology, the suction taste can be improved, and there is no need to set multiple sets of circuits on the heating element 1, and the structure is simple.

[0038] It should be understood that the heating element 1 can be in a heating state as a whole, that is, both the tubular portion 11 and the flexible portion 12 can be used for heating. For the actual heating area of the flexible portion 12, it refers to the heating area where the flexible portion 12 directly or indirectly acts on the cigarette rod 4 to generate aerosol for the cigarette rod 4. For example, in the case where the heating element 1 is in direct contact with the cigarette rod 4, the sleeve 2 adjusts the axially contactable area between the flexible portion 12 and the cigarette rod 4. For example, in the case where the heating element 1 contacts the cigarette rod 4 through the base tube 8, the actual heating area of the flexible portion 12 is the actual contact area between the flexible portion 12 and the base tube 8.

[0039] Further, the flexible part 12 includes a plurality of flexible sheets 121. Each flexible sheet 121 is disposed at one end of the tubular part 11 and is sequentially and spaced apart along the circumferential direction of the tubular part 11. When the sleeve 2 moves along the axial direction of the heating element 1 from the tubular part 11 to the flexible part 12, each flexible sheet 121 gradually contracts to increase the actual heating area of the flexible part 12. When the sleeve 2 moves along the axial direction of the heating element 1 from the flexible part 12 to the tubular part 11, each flexible sheet 121 gradually unfolds to reduce the actual heating area of the flexible part 12.

[0040] Specifically, the heating element 1 is a metal heating member made of a metal material, or can be one or more of an FPC heating film, a PI heating film, a nano flexible heating film, and a metal shrapnel coated film. Among them, the heating method of the heating element 1 includes but is not limited to at least one of resistive heating and electromagnetic induction heating.

[0041] In some embodiments, a plurality of flexible sheets 121 are enclosed at one end of the tubular part 11. In the initial state, the extending direction of the connection between the flexible sheet 121 and the end of the tubular part 11 is arranged at an angle with the axis of the tubular part 11, and the angle is an acute angle. Each flexible sheet 121 unfolds, and there is a gap between each flexible sheet 121. When the sleeve 2 moves along the axial direction of the heating element 1 from the tubular part 11 to the flexible part 12, each flexible sheet 121 gradually contracts, and there is no gap or a very small gap between each flexible sheet 121 during contraction. And the extending direction of the connection between the flexible sheet 121 and the end of the tubular part 11 is parallel to the axis of the tubular part 11. When the sleeve 2 moves along the axial direction of the heating element 1 from the flexible part 12 to the tubular part 11, each flexible sheet 121 gradually unfolds and returns to the initial state.

[0042] As an example, taking the way that the heating element 1 is sleeved outside the cigarette rod 4 and the heating element 1 directly contacts and heats the cigarette rod 4 as an example, wherein the first region of the cigarette rod 4 can directly contact the inner wall of the tubular portion 11, so that when the heating element 1 works, the first region of the cigarette rod 4 can be heated through the tubular portion 11. And a plurality of flexible sheets 121 are enclosed around the outer peripheral side of the second region of the cigarette rod 4. When the flexible portion 12 is in the initial state, the end of the flexible sheet 121 connected to the tubular portion 11 is inclined with respect to the tubular portion 11, so that the flexible sheet 121 has a certain unfolding angle in the initial state. When the sleeve 2 moves along the axial direction of the heating element 1 from the tubular portion 11 to the flexible portion 12, each flexible sheet 121 gradually contracts under the pressing action of the sleeve 2, so that the contact area between the flexible sheet 121 and the second region of the cigarette rod 4 can be gradually increased, and the heating of the second region of the cigarette rod 4 by the flexible sheet 121 can be gradually increased. When the sleeve 2 moves along the axial direction of the heating element 1 from the flexible portion 12 to the tubular portion 11, the flexible sheet 121 gradually unfolds, so that the contact area between the flexible sheet 121 and the second region of the cigarette rod 4 can be gradually reduced, and the heating of the second region of the cigarette rod 4 by the flexible sheet 121 can be gradually reduced. By the axial movement of the sleeve 2, the flexible portion 12 can be unfolded or contracted in the radial direction, so that the actual heating region of the heating element 1 on the cigarette rod 4 can be adjusted, and the heated region of the cigarette rod 4 can linearly increase or decrease with time, so that the moisture and substances in the second region of the cigarette rod 4 are evenly released during the suction process, and the suction taste is improved.

[0043] Furthermore, the sleeve 2 includes a first sleeve 21 and a second sleeve 22; the first sleeve 21 is sleeved on the outer peripheral side of the heating element 1, and the first sleeve 21 can move along the axial direction of the heating element 1 between the tubular portion 11 and the flexible portion 12 for changing the flexible portion 12 to unfold or contract in the radial direction; the second sleeve 22 is arranged at one end of the flexible portion 12 away from the tubular portion 11, and the second sleeve 22 is provided with an abutting portion 221, and the abutting portion 221 is used for abutting against the inner side of the flexible portion 12.

[0044] Specifically, in some embodiments, the first sleeve 21 can axially move relative to the heating element 1, while the second sleeve 22 is fixed relative to the heating element 1. When the first sleeve 21 moves axially along the heating element 1 from the tubular portion 11 to the flexible portion 12, the flexible sheet 121 of the flexible portion 12 gradually contracts under the pressing of the first sleeve 21 until the first sleeve 21 moves close to the second sleeve 22, and the inner side of the free end of the flexible portion 12 abuts against the abutting portion 221 of the second sleeve 22. When the first sleeve 21 moves axially along the heating element 1 from the flexible portion 12 to the tubular portion 11, the flexible portion 12 is no longer under the pressing action of the first sleeve 21, and since the inner side of the free end of the flexible portion 12 abuts against the abutting portion 221, the flexible portion 12 can gradually expand outward from the end. By axially moving the first sleeve 21, the flexible portion 12 can be expanded or contracted, so that the actual heating area of the heating element 1 on the cigarette 4 can be adjusted.

[0045] In some embodiments, the first sleeve 21 and the second sleeve 22 are fixedly assembled, and the first sleeve 21 and the second sleeve 22 can move synchronously along the axis of the heating element 1. When the first sleeve 21 and the second sleeve 22 move axially along the heating element 1 from the tubular portion 11 to the flexible portion 12, the flexible sheet 121 of the flexible portion 12 gradually contracts under the pressing of the first sleeve 21, and since the second sleeve 22 moves in the same direction, the flexible portion 12 will not contact the abutting portion 221 of the second sleeve 22 after contraction, which is more conducive to the contraction of the flexible portion 12. When the first sleeve 21 and the second sleeve 22 move axially along the heating element 1 from the flexible portion 12 to the tubular portion 11, the flexible portion 12 is no longer under the pressing action of the first sleeve 21, and the second sleeve 22 moves in the same direction. When the abutting portion 221 of the second sleeve 22 moves to the end of the free end of the flexible portion 12, the second sleeve 22 can abut against the inner side of the flexible portion 12. With the movement of the second sleeve 22, it is more conducive to the outward expansion of the flexible portion 12.

[0046] Further, a curled edge 122 is provided at one end of the flexible portion 12 away from the tubular portion 11, the curled edge 122 bends toward the tubular portion 11, and the abutting portion 221 is used to abut against the inner side of the curled edge 122.

[0047] Specifically, in some embodiments, the first sleeve 21 and the second sleeve 22 can move synchronously along the axial direction of the heating element 1. The crimp 122 is provided at the free end of the flexible portion 12, and each flexible piece 121 is provided with a crimp 122. When the first sleeve 21 and the second sleeve 22 move along the axial direction of the heating element 1 from the flexible portion 12 towards the tubular portion 11, the flexible portion 12 is no longer under the pressing action of the first sleeve 21, and the second sleeve 22 moves in the same direction. When the abutting portion 221 of the second sleeve 22 moves to the end of the free end of the flexible portion 12, since the free end of the flexible portion 12 is provided with a crimp 122, it is beneficial for the abutting portion 221 of the second sleeve 22 to push open each flexible piece 121 of the flexible portion 12 during the movement, and it is more beneficial for the flexible portion 12 to be smoothly unfolded.

[0048] Further, the first sleeve 21 includes a main body portion 211 and an extension portion 212 connected between the main body portion 211 and the second sleeve 22; when the flexible portion 12 is in the first state, the inner side wall of the main body portion 211 abuts against the outer side wall of the tubular portion 11, and there is a gap between the inner side wall of the extension portion 212 and the outer peripheral side of the flexible portion 12; when the flexible portion 12 is in the second state, the inner side wall of the main body portion 211 abuts against the outer side of the flexible portion 12.

[0049] Specifically, the diameter of the main body portion 211 is smaller than that of the extension portion 212. In the direction from the tubular portion 11 to the flexible portion 12 of the heating element 1, the sleeve 2 sequentially includes the main body portion 211 of the first sleeve 21, the extension portion 212 of the first sleeve 21, and the second sleeve 22. When the flexible portion 12 is in the first state, the inner side wall of the main body portion 211 abuts against the outer side wall of the tubular portion 11, and the extension portion 212 with a larger diameter surrounds the outer peripheral side of the flexible portion 12, and there is a gap between the extension portion 212 and the outer peripheral side of the flexible portion 12. Therefore, the extension portion 212 cannot contact the flexible portion 12, and since the abutting portion 221 of the second sleeve 22 abuts against the inner side of the flexible portion 12, the flexible portion 12 is in an unfolded state. As the sleeve 2 moves from the tubular portion 11 towards the flexible portion 12, the main body portion 211 gradually moves from the tubular portion 11 to the flexible portion 12, and the main body portion 211 can press the flexible portion 12, causing the flexible portion 12 to gradually contract. When the flexible portion 12 is in the second state, the inner side of the main body portion 211 abuts against the outer side of the flexible portion 12, and the flexible portion 12 can be used to heat the cigarette rod 4.

[0050] In some embodiments, the portion of the sleeve 2 sleeved outside the tubular portion 11 is made of a material with a high thermal conductivity coefficient. Since this portion conducts the heat of the tubular portion 11 to the flexible portion 12 during the axial movement, that is, when adjusting the actually heatable area of the flexible portion 12 acting on the cigarette rod 4, it can reduce the temperature difference between the actually heatable area of the flexible portion 12 and the actually heatable area of the tubular portion 11, and at the same time improve the energy utilization rate.

[0051] Specifically, the heat conduction coefficient of the first sleeve 21 is greater than that of the second sleeve 22, and the difference between the heat conduction coefficients of the first sleeve 21 and the second sleeve 22 is greater than or equal to 50 W / (m·K), such as 52 W / (m·K), 55 W / (m·K), 60 W / (m·K), etc.

[0052] Furthermore, the heat conduction coefficient of the main body portion 211 is greater than that of the extension portion 212. Similarly, the difference between the heat conduction coefficients of the main body portion 211 and the extension portion 212 is greater than or equal to 50 W / (m·K). Among them, the heat conduction coefficient of the main body portion 211 can be greater than or equal to 10 W / (m·K). For example, the heat conduction coefficient of the main body portion 211 is 10.5 W / (m·K), 11 W / (m·K), 12 W / (m·K), 13 W / (m·K), etc.

[0053] In some embodiments, the heating assembly further includes a base tube 8, and the base tube 8 is disposed through the heating element 1; the sleeve 2 moves axially along the heating element 1 to adjust the contact area of the heating element 1 in the axial direction of the base tube 8.

[0054] In some embodiments, the heating element 1 may not be in direct contact with the cigarette rod 4. The heating assembly may include a base tube 8, the heating element 1 is enclosed on the outer peripheral side of the base tube 8, the cigarette rod 4 may be disposed inside the base tube 8, and the heat of the heating element 1 will be conducted to the cigarette rod 4 through the base tube 8. The sleeve 2 is disposed on the outer peripheral side of the heating element 1, and the sleeve 2 can move back and forth between the tubular portion 11 and the flexible portion 12, so that the flexible portion 12 can be expanded or contracted in the radial direction, that is, the contact area between the heating element 1 and the base tube 8 can be changed, and the adjustment of the actual heating area of the heating element 1 can be realized.

[0055] In some embodiments, the heating element 1 may be in direct contact with the cigarette rod 4, the heating element 1 surrounds the outer peripheral side of the cigarette rod 4, the axial direction of the heating element 1 is parallel to the axial direction of the cigarette rod 4, and the heat of the heating element 1 will be directly conducted to the cigarette rod 4. Similarly, the sleeve 2 can move back and forth between the tubular portion 11 and the flexible portion 12, and the flexible portion 12 can be expanded or contracted in the radial direction, that is, the contact area between the heating element 1 and the cigarette rod 4 can be changed, and the adjustment of the actual heating area of the heating element 1 can be realized.

[0056] In some embodiments, the heating element 1 can be used to heat liquid media such as atomized liquid. At this time, the electronic atomization device may include an oil guiding body for storing the atomized liquid and an assembling structure for assembling the oil guiding body and capable of realizing heat conduction. The heating element 1 surrounds the outer peripheral side of the assembling structure, and the adjustment of the actual heating area of the heating element 1 can also be realized.

[0057] Further, the base tube 8 includes a first part and a second part connected to one end of the first part; the outer peripheral side of the first part abuts against the inner side wall of the tubular part 11; the sleeve 2 moves along the axial direction of the heating element 1 from the tubular part 11 to the flexible part 12, and the contact area between the flexible part 12 and the second part gradually increases; the sleeve 2 moves along the axial direction of the heating element 1 from the flexible part 12 to the tubular part 11, and the contact area between the flexible part 12 and the part gradually decreases.

[0058] Specifically, in some embodiments, in the direction from the tubular part 11 to the flexible part 12 of the heating element 1, the base tube 8 sequentially includes a first part and a second part. The first part conducts the heat of the heating element 1 to the first area of the cigarette rod 4, and the second part conducts the heat of the heating element 1 to the second area of the cigarette rod 4.

[0059] Since the tubular part 11 of the heating element 1 always contacts and fits with the first part of the base tube 8, the heat of the tubular part 11 will be conducted to the first area of the cigarette rod 4 through the first part. The flexible part 12 of the heating element 1 is arranged on the outer peripheral side of the second part. When the sleeve 2 moves along the axial direction of the heating element 1 from the tubular part 11 to the flexible part 12, the flexible part 12 is pressed by the sleeve 2, and the flexible part 12 contacts and fits with the second part of the base tube 8. The heat of the flexible part 12 of the heating element 1 can be conducted to the second area of the cigarette rod 4 through the second part of the base tube 8. As the sleeve 2 moves, the contact area between the flexible part 12 and the second part gradually increases, so that the heating area will gradually increase. When the sleeve 2 moves along the axial direction of the heating element 1 from the flexible part 12 to the tubular part 11, the flexible part 12 gradually unfolds, and the contact area between the flexible part 12 and the part gradually decreases, so that the heating area gradually decreases. By the axial movement of the sleeve 2, the contact area between the flexible part 12 and the base tube 8 can be adjusted, so that the actual heating area of the heating element 1 on the cigarette rod 4 can be adjusted, realizing that the heated area of the cigarette rod 4 increases or decreases linearly with time, enabling the moisture and substances in the second area of the cigarette rod 4 to be evenly released during the suction process and improving the suction taste.

[0060] In practical applications, during the preheating stage, when the flexible part 12 of the heating element 1 is in the initial state, the flexible sheet 121 of the flexible part 12 is in the unfolded state, there is a gap between the flexible part 12 and the second part of the base tube 8. The second part is not heated and is in a low-temperature state, and the second area of the cigarette 4 is also in a low-temperature state. Little water vapor is generated by the whole cigarette 4, thus the problem of scalding the mouth during the first puff can be solved. At the end of the preheating stage, the flexible sheet 121 of the flexible part 12 shrinks, the flexible part 12 contacts and fits with the second part, and the second part is heated and gradually warms up. At this time, the second area can also start to be heated and warmed up. When the heating ends, the flexible sheet 121 of the flexible part 12 unfolds again, and there is a gap between the flexible part 12 and the second part again. By controlling the contact area between the flexible part 12 and the second part, the adjustment of the actual heating area of the heating element 1 can be realized, the heated area of the cigarette 4 increases or decreases linearly with time, the moisture and substances in the second area of the cigarette 4 are evenly released during the suction process, and the suction taste is improved.

[0061] In some embodiments, the heat of the heating element 1 is directly transferred to the cigarette 4. Then, the tubular part 11 of the heating element 1 always contacts and fits with the first area of the cigarette 4, and the flexible part 12 of the heating element 1 is arranged on the outer peripheral side of the second area of the cigarette 4. By the axial movement of the sleeve 2, the contact area between the flexible part 12 and the second area of the cigarette 4 can be adjusted, and the actual heating area of the heating element 1 on the cigarette 4 can also be adjusted, the heated area of the cigarette 4 increases or decreases linearly with time, the moisture and substances in the second area of the cigarette 4 are evenly released during the suction process, and the suction taste is improved.

[0062] Furthermore, the thermal conductivity of the base tube 8 is greater than 10 W / (m·K). Specifically, the thermal conductivity of the base tube 8 can be 10.5 W / (m·K), 11 W / (m·K), 12 W / (m·K), 13 W / (m·K), 14 W / (m·K), 15 W / (m·K), etc. Due to the high thermal conductivity of the base tube 8, the heat of the heating element 1 can be quickly conducted to the base tube 8 to quickly heat the cigarette 4.

[0063] Furthermore, the heating assembly further includes a driving device 3. The driving device 3 is connected to the sleeve 2 to move the sleeve 2 axially between the tubular part 11 and the flexible part 12 along the heating element 1.

[0064] Specifically, the driving device 3 is electrically connected to the power supply assembly 7. The driving device 3 is connected to the sleeve 2, so that the sleeve 2 can be driven to move axially between the tubular part 11 and the flexible part 12 along the heating element 1, so that the flexible part 12 expands or contracts radially, adjusts the actual heating area of the heating element 1 on the cigarette 4, the heated area of the cigarette 4 increases or decreases linearly with time, the moisture and substances in the second area of the cigarette 4 are evenly released during the suction process, and the suction taste is improved.

[0065] In some embodiments, the sleeve 2 includes a first sleeve 21 and a second sleeve 22, and the first sleeve 21 and the second sleeve 22 are fixedly assembled. The first sleeve 21 and the second sleeve 22 can move synchronously along the axis of the heating element 1. The driving device 3 is connected to the second sleeve 22, and the second sleeve 22 drives the first sleeve 21 to move synchronously.

[0066] Further, the driving device 3 includes a motor 33 and a transmission mechanism connected to the output end of the motor 33, and the transmission mechanism is connected to the sleeve 2.

[0067] Specifically, in some embodiments, the transmission mechanism may include a rack 32 disposed on the second sleeve 22 and extending along the axis of the heating element 1, and a gear 31 connected to the output end of the motor 33. The gear 31 and the rack 32 are engaged. By controlling the rotation speed and rotation direction of the motor 33, the speed and rotation direction of the gear 31 can be controlled, so that the moving speed and moving direction of the rack 32 can be realized, and further the moving speed and moving direction of the sleeve 2 can be realized, and the adjustment of the heating area of the heating element 1 can be realized.

[0068] In some embodiments, the transmission mechanism can be a worm and worm gear, a screw drive, etc.

[0069] Further, the heating assembly further includes a first bracket 5 and a second bracket 6. The first bracket 5 is fixed to the side of the tubular portion 11 away from the flexible portion 12, and the second bracket 6 is fixed to the side of the flexible portion 12 away from the tubular portion 11. The base tube 8 and the cigarette 4 can be fixed between the first bracket 5 and the second bracket 6.

[0070] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The above is the description of the technical solution provided by the present invention. For those skilled in the art, according to the idea of the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A heating component, characterized in that, it comprises: a heating element and a sleeve; at least part of the sleeve is sleeved outside the heating element; the heating element includes a tubular part and a flexible part connected in sequence along the axial direction, one end of the flexible part is connected to the tubular part, and the other end extends axially and radially outward away from the tubular part; the sleeve can move axially along the heating element between the tubular part and the flexible part, so that the flexible part expands or contracts radially to reduce or increase the actual heating area of the flexible part in the axial direction of the heating element.

2. The heating component according to claim 1, characterized in that, the flexible part includes a plurality of flexible sheets, each flexible sheet is arranged at one end of the tubular part and is arranged at intervals in sequence along the circumferential direction of the tubular part; when the sleeve moves axially along the heating element from the tubular part to the flexible part, each flexible sheet gradually contracts to increase the actual heating area of the flexible part; when the sleeve moves axially along the heating element from the flexible part to the tubular part, each flexible sheet gradually expands to reduce the actual heating area of the flexible part.

3. The heating component according to claim 1, characterized in that, the sleeve includes a first sleeve and a second sleeve; the first sleeve is sleeved on the outer peripheral side of the heating element, and the first sleeve can move axially along the heating element between the tubular part and the flexible part for changing the flexible part to expand or contract radially; the second sleeve is arranged at one end of the flexible part away from the tubular part, and the second sleeve is provided with an abutting part for abutting against the inner side of the flexible part.

4. The heating component according to claim 3, characterized in that, the first sleeve and the second sleeve are fixedly assembled, and both the first sleeve and the second sleeve can move axially along the heating element.

5. The heating component according to claim 4, characterized in that, a curled edge is arranged at one end of the flexible part away from the tubular part, the curled edge bends towards the tubular part, and the abutting part is used for abutting against the inner side of the curled edge.

6. The heating component according to claim 3, characterized in that, the first sleeve includes a main body part and an extension part connected between the main body part and the second sleeve; when the flexible part is in the first state, the inner side wall of the main body part abuts against the outer side wall of the tubular part, and there is a gap between the inner side wall of the extension part and the outer peripheral side of the flexible part; when the flexible part is in the second state, the inner side wall of the main body part abuts against the outer side of the flexible part.

7. The heating component according to claim 1, characterized in that, the heating component further includes a base tube, and the base tube is inserted through the heating element; the sleeve moves axially along the heating element to adjust the contact area of the heating element in the axial direction of the base tube.

8. The heating component according to claim 7, characterized in that, the base tube includes a first part and a second part connected to one end of the first part; the outer peripheral side of the first part abuts against the inner side wall of the tubular part; The sleeve moves along the axial direction of the heating element from the tubular part to the flexible part, and the contact area between the flexible part and the second part gradually increases; The sleeve moves along the axial direction of the heating element from the flexible part to the tubular part, and the contact area between the flexible part and the part gradually decreases.

9. The heating assembly according to claim 7, wherein, the heat conduction coefficient of the base tube is greater than 10 W / (m·K).

10. The heating assembly according to claim 1, wherein, the heating assembly further includes a driving device, and the driving device is connected to the sleeve for moving the sleeve along the axial direction of the heating element between the tubular part and the flexible part.

11. The heating assembly according to claim 10, wherein, the driving device includes a motor and a transmission mechanism connected to the output end of the motor, and the transmission mechanism is connected to the sleeve.

12. An electronic atomization device, wherein, it includes a power supply assembly and the heating assembly according to any one of claims 1-11, and the power supply assembly is connected to the heating element.

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