aerosol generator

Abstract

An aerosol generating device (10) having a storage space (11) for storing an aerosol-generating substrate, the aerosol generating device (10) includes a heater (13) and a sleeve (12), at least a portion of the heater (13) is inserted into the storage space (11) so as to heat the aerosol-generating substrate, the sleeve (12) includes a first sleeve body (126) and a second sleeve body (122), the first sleeve body (126) and the second sleeve body (122) are sealed at both ends to form a vacuum space (121) surrounding the exterior of the storage space (11), and the length of the vacuum space (121) is greater than the length of the heater (13).

Description

[Technical Field]

[0001] The present invention relates to the field of electronic atomization, and in particular to aerosol generating devices. [Background technology]

[0002] An aerosol generator generates an aerosol for inhalation by a user by heating an aerosol-generating substrate by a baking method, which is a non-combustion heating method, and since this baking method can significantly reduce harmful components in the aerosol compared to methods that generate an aerosol by directly burning the aerosol-generating substrate, a wider market demand for aerosol generators is expected. An aerosol generator usually includes a heater and a power supply assembly, the heater is insertable into the aerosol-generating substrate, the power supply assembly supplies power to the heater, and the heater converts electrical energy into thermal energy to heat and atomize the aerosol-generating substrate to obtain an aerosol.

[0003] Currently, only 13% of the energy consumed by the heater is used to heat the aerosol-generating substrate, and the remaining large amount of energy is transferred to the outer tube around the heater and ultimately dissipated. To solve the problem of low energy utilization rate of aerosol-generating devices, there are mainly two solutions used in the past: one is to use elements with low heat transfer coefficient, but this method is limited to certain types of materials and therefore the effect achieved is insufficient; the other is to improve the temperature field of the heater, but this method affects the inhalation sensation of the aerosol due to changes in the temperature field of the heater. Summary of the Invention [Problem to be solved by the invention]

[0004] In light of this, there is a need to provide an aerosol generating device. [Means for solving the problem]

[0005] The present application provides an aerosol-generating device having a storage space for storing an aerosol-generating substrate, the aerosol-generating device including: a heater, at least a portion of which is inserted into the storage space so as to heat the aerosol-generating substrate; a sleeve including a first sleeve body and a second sleeve body, the first sleeve body and the second sleeve body being sealed at both ends to form a vacuum space surrounding the outside of the accommodation space, the length of the vacuum space being greater than the length of the heater.

[0006] In one embodiment, the sleeve further includes a third sleeve body, and the first sleeve body and the second sleeve body are each sealed at both ends with the third sleeve body to form a multi-layer vacuum space surrounding the exterior of the accommodating space.

[0007] In one embodiment, the first sleeve body, the second sleeve body and the third sleeve body are all covered with a heat insulating layer on the side opposite to the heater.

[0008] In one embodiment, the wall thickness of the first sleeve body and the second sleeve body is less than 0.2 mm.

[0009] In one embodiment, the aerosol generating device further includes a first fixing member for fixing the sleeve, the first fixing member abutting an area of ​​the sleeve corresponding to the vacuum space on the opposite side of the sleeve from the heater.

[0010] In one embodiment, the first fixing member acts on an intermediate position of the sleeve corresponding to the vacuum space.

[0011] In one embodiment, the first fixing member and the sleeve are in indirect contact with each other via a heat insulating member.

[0012] In one embodiment, a gap exists between both axial ends of the first fixing member and both axial ends of the sleeve.

[0013] In one embodiment, the aerosol generating device further includes a second fixing member and a third fixing member, which fix the sleeve at both ends of the sleeve, respectively.

[0014] In one embodiment, the aerosol generating device further includes a support frame, the heater is attached to the support frame, and the third fixing members are multiple, and the multiple third fixing members are connected to the support frame at intervals and act together on the same end surface of the sleeve.

[0015] In one embodiment, the aerosol generating device further includes an extractor, the extractor defining the accommodation space, at least a portion of the extractor being accommodated within the sleeve, and the sleeve and the extractor being spaced apart.

[0016] In one embodiment, the extractor has a through hole formed therein, the heater extends into the accommodating space through the through hole, and there is a gap between the heater and the inner wall of the through hole.

[0017] In one embodiment, the aerosol generating device includes a support frame, the heater is attached to the support frame, and the support frame and the extractor are spaced apart.

[0018] In one embodiment, the aerosol generating device further includes an outer tube, and the heater and the sleeve are both housed inside the outer tube.

[0019] In one embodiment, the outer tube comprises two nested tubes connected at edges to form a vacuum cavity between the two tubes surrounding the sleeve.

[0020] The details of one or more embodiments of the present application are set forth in the drawings and description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. [Brief explanation of the drawings]

[0021] To better describe and explain the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings. Additional details or examples used to illustrate the drawings should not be construed as limiting the scope of either the disclosed inventions, the presently described embodiments and / or examples, and the best modes of these inventions as currently understood.

[0022] [Figure 1] 1 is a perspective view of an aerosol generating device according to some embodiments. FIG. [Figure 2] 2A and 2B are a front view and a right side view, respectively, of the aerosol generating device shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view of the aerosol generating device shown in FIG. 2 taken along the direction BB. [Figure 4] FIG. 3 is a cross-sectional view of the aerosol generating device shown in FIG. 2 taken along the direction AA. [Figure 5] FIG. 4 is an enlarged view of the configuration of part E in FIG. 3. [Figure 6] FIG. 5 is an enlarged view of the configuration of part F in FIG. 4. [Figure 7] FIG. 7 is a schematic diagram illustrating a combination of key parts related to the heater and sleeve in the structure shown in FIG. 6. [Figure 8] FIG. 8 is a schematic structural view of the sleeve in FIG. 7. [Figure 9] 8 is a schematic diagram of the structure of the support frame and the third fixing member in FIG. 7, which are integrally molded. FIG. [Figure 10] FIG. 8 is a structural schematic diagram of the extractor in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0023] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, specific embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, many specific details will be set forth in order to fully understand the present invention. However, the present invention can be embodied in many other forms different from the embodiments described herein, and those skilled in the art will be able to make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific examples disclosed below.

[0024] In describing the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. are based on the orientations or positional relationships shown in the drawings, and are intended solely to facilitate and simplify the description of the present invention, and do not imply or suggest that the devices or elements referred to have a particular orientation or must be constructed and operated in a particular orientation, and should not be construed as limiting the present invention.

[0025] It should be noted that the terms "first" and "second" are for descriptive purposes only and are not to be understood as meaning or suggesting relative importance or the number of technical features being described. Thus, a feature qualified with "first" or "second" can explicitly or implicitly include at least one of that feature. In the description of the present invention, unless otherwise expressly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0026] In the present invention, unless otherwise clearly defined or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be understood in a broad sense, and may mean, for example, a fixed connection, a detachable connection, or an integral unit. They may also be mechanically connected or electrically connected. Furthermore, unless otherwise clearly limited, they may be directly connected, indirectly connected via an intermediate medium, or may refer to internal communication between two elements or an interactive relationship between two elements. The specific meanings of the above terms in the present invention will be understood by those skilled in the art depending on the specific circumstances.

[0027] In the present invention, unless otherwise clearly defined and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature may simply indicate that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is greater than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may simply indicate that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is smaller than that of the second feature.

[0028] It should be noted that when an element is referred to as being "fixed" or "mounted" to another element, it may be directly connected to the other element, or there may be intervening elements. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or there may be intervening elements. The terms "vertical," "horizontal," "top," "bottom," "left," "right," and similar terms used herein are for descriptive purposes only and do not represent the only embodiment.

[0029] As shown in Fig. 1, the present application provides an aerosol generator 10. The aerosol generator 10 generally extends to form a rod-like structure, and if the extension direction of the aerosol generator 10 is defined as the axial direction, the direction perpendicular to the axial direction is the radial direction. As shown in Fig. 1, the Z-axis direction is the axial direction, and the X-axis and Y-axis are both perpendicular to the Z-axis, and the X-axis and Y-axis directions are both radial directions of the aerosol generator 10.

[0030] 2 to 8, the aerosol-generating device 10 has a storage space 11 that stores an aerosol-generating substrate 20. The aerosol-generating device 10 also includes a heater 13 and a sleeve 12. At least a portion of the heater 13 is inserted into the storage space 11 so as to heat the aerosol-generating substrate 20. The sleeve 12 is disposed around the outer periphery of the storage space 11. The sleeve 12 includes a first sleeve body 126 and a second sleeve body 122, which are sealed at both ends to form a vacuum space 121 that surrounds the outside of the storage space 11. The length of the vacuum space 121 is greater than the length of the heater 13.

[0031] After placing the aerosol-generating substrate 20 in the storage space 11, the heater 13 can be inserted inside the aerosol-generating substrate 20, and after electricity is passed through the heater 13 to generate heat, the heater 13 heats and atomizes the aerosol-generating substrate 20 inside the aerosol-generating substrate 20 to obtain an aerosol.

[0032] Furthermore, a sleeve 12 is provided around the outer periphery of the accommodation space 11, and the length of the vacuum space 121 is longer than the length of the heater 13. Specifically, as shown in Figure 7, the heater 13 is located axially between planes H1 and H2, and the regions between planes H1 and H2 must each have a corresponding vacuum space 121 in the radial direction. In this way, by utilizing the insulating effect of the vacuum space 121, more heat can be confined within the space defined by the sleeve 12, blocking the radial transmission of heat generated by the entire heater 13. As a result, a large amount of heat generated by the heater 13 is concentrated inside the accommodation space 11 and heats the aerosol-generating substrate 20, achieving effective heat utilization and improving energy utilization rate.

[0033] In addition, the insulating effect of the vacuum space 121 inside the sleeve 12 reduces the heat transferred radially to the outer periphery of the aerosol generating device 10, thereby contributing to lowering the temperature of the outer periphery of the aerosol generating device 10 and preventing the temperature of the outer periphery of the aerosol generating device 10 from becoming too high and affecting the user's experience.

[0034] Furthermore, compared to conventional elements with low heat transfer coefficients (e.g., plastic materials), the sleeve 12 having the vacuum space 121 has a higher thermal insulation effect and can improve energy utilization. At the same time, compared to conventional methods of improving the temperature field of the heater, the temperature field of the heater 13 does not change in the present invention, which does not affect the inhalation feel of the aerosol, and the high energy utilization allows the aerosol-generating substrate 20 to be more fully heated and atomized, contributing to the realization of a good inhalation feel.

[0035] 7 and 8, specifically, the second sleeve body 122 includes a partition portion 123 and two connecting portions 124, and the two connecting portions 124 are connected to both axial ends of the partition portion 123. In the second sleeve body 122, the connecting portion 124 is connected to an end of the first sleeve body 126, and a gap is formed between the partition portion 123 and the first sleeve body 126, and a vacuum space 121 is obtained by evacuating this gap.

[0036] In some embodiments, the sleeve 12 further includes a third sleeve body (not shown), and the first sleeve body 126 and the second sleeve body 122 may each be sealed at both ends with the third sleeve body to form a multi-layer vacuum space 121 surrounding the exterior of the storage space.

[0037] When the third sleeve body is positioned between the first sleeve body 126 and the second sleeve body 122, a vacuum space 121 is formed between the third sleeve body and the first sleeve body 126 and between the third sleeve body and the second sleeve body 122, thereby forming multiple vacuum spaces 121 in the radial direction and thus better blocking heat transfer in the radial direction. Furthermore, there may be multiple third sleeve bodies positioned between the first sleeve body 126 and the second sleeve body 122, thereby creating many vacuum spaces 121 in the radial direction.

[0038] In some embodiments, multiple sleeves 12 may be provided that are nested within one another. It should be understood that multiple sleeves 12 means that the number of sleeves 12 is two or more. By providing multiple sleeves 12, multiple vacuum spaces 121 can also be formed in the radial direction, which can better block heat transfer in the radial direction.

[0039] Specifically, the thickness of the first sleeve body 126 and the second sleeve body 122 is less than 0.2 mm. If the thickness were larger, heat would be transferred along the first sleeve body 126 and the second sleeve body 122, preventing the sleeve 12 from providing effective heat insulation. Therefore, by making the thickness of the first sleeve body 126 and the second sleeve body 122 less than 0.2 mm, heat transfer along the sleeve 12 is reduced and the vacuum space 121 can be fully utilized to achieve good heat insulation.

[0040] Specifically, the space surrounded by the vacuum space 121 is an accommodating cavity 125 defined by the first sleeve body 126 on the side opposite the vacuum space 121. The accommodating space 11 and the heater 13 are both located within the accommodating cavity 125. Because the sleeve 12 is disposed around the outer periphery of the accommodating space 11, the space defined by the sleeve 12 is the accommodating cavity 125. The accommodating cavity 125 is located inside the sleeve 12, giving the sleeve 12 a tubular structure with both ends open, and the vacuum space 121 is located inside the solid structure of the sleeve 12, giving the sleeve 12 a sandwich structure, so that the vacuum space 121 surrounds the accommodating cavity 125. Furthermore, when the accommodating cavity 125 axially penetrates both ends of the sleeve 12, the accommodating space 11 can extend into the accommodating cavity 125 from one end opening of the sleeve 12, and the heater 13 can be attached to the accommodating cavity 125 from the other end opening of the sleeve 12.

[0041] To further improve the thermal insulation effect of the sleeve 12, the accommodating cavity 125 may axially extend through only one end of the sleeve 12, so that the sleeve 12 is open at one end and closed at the other end. In this manner, the heater 13 is mounted within the accommodating cavity 125 and is adjacent to the closed end of the sleeve 12, and the accommodating space 11 can extend from the open end of the sleeve 12 into the accommodating cavity 125.

[0042] In some embodiments, the first sleeve body 126, the second sleeve body 122, and the third sleeve body are all covered with a heat insulating layer on the side opposite the heater. By providing the heat insulating layer, in addition to insulating the sleeve 12 itself, it is possible to further block heat transfer in the radial direction.

[0043] Specifically, the entire side of the second sleeve body 122 opposite the heater 13 is covered with the heat insulating layer 14. Specifically, by applying aerogel to the second sleeve body 122, the heat insulating layer 14 can be formed by utilizing the low heat conductivity of the aerogel. In another embodiment, gaps can be formed between many regions of the second sleeve body 122 and other adjacent members, and the relatively low heat conductivity of the air in the gaps can be utilized to form the heat insulating layer 14. Furthermore, the heat insulating layer 14 not only covers the region of the sleeve 12 corresponding to the vacuum space 121, but also covers both end regions of the sleeve 12 in the axial direction, thereby blocking radial heat transfer for the entire sleeve 12.

[0044] As shown in Figures 5 to 8, specifically, the aerosol generation device 10 includes a first fixing member 15 that fixes the sleeve 12 in the radial direction. Furthermore, the first fixing member 15 has a tubular structure and is fitted onto the outer periphery of the sleeve 12, so that the sleeve 12 cannot move in the radial direction within the first fixing member 15. Furthermore, by applying aerogel to the second sleeve body 122, it is possible to form a heat insulating layer 14 and fill the gap between the first fixing member 15 and the sleeve 12, thereby serving to fix the first fixing member 15 and the sleeve 12 relative to each other.

[0045] In some other embodiments, the first fixing member 15 abuts against a region of the sleeve 12 that corresponds to the vacuum space 121 on the opposite side of the heater 13. Due to the insulating effect of the vacuum space 121, more heat is transferred to both ends of the sleeve 12 along the axial direction, so that the temperature of the region of the sleeve 12 that corresponds to the vacuum space 121 is lower than the temperature of both ends of the sleeve 12. By abutting the first fixing member 15 against the region of the sleeve 12 that corresponds to the vacuum space 121, the first fixing member 15 can fix the sleeve 12 in the radial direction and reduce heat transfer to the first fixing member 15.

[0046] Specifically, more heat is transferred to the connection portion 124, the temperature of the partition portion 123 corresponding to the vacuum space 121 becomes relatively lower, and the first fixing member 15 acts on the partition portion 123. Specifically, connection bumps can be provided on the partition portion 123 in a protruding manner, and the first fixing member 15 can be brought into contact with the connection bumps. In addition, a gap exists between the partition portion 123 and the first fixing member 15, and this gap can form the heat insulating layer 14.

[0047] Furthermore, the first fixing member 15 acts at an intermediate position corresponding to the vacuum space 121 in the sleeve 12. The intermediate position of the vacuum space 121 can be specifically understood as an intermediate position in the axial direction of the vacuum space 121. The temperature is high at both ends of the sleeve 12 along the axial direction, and the temperature decreases the further away from the ends. In this way, by acting at an intermediate position in the axial direction of the vacuum space 121, the heat transfer to the first fixing member 15 can be further reduced.

[0048] Specifically, the first fixing member 15 is a plastic fixing member, and since the first fixing member 15 is made of a plastic material, the first fixing member 15 has low heat transfer performance and can reduce heat transfer along the radial direction.

[0049] Specifically, in the process of fixing the sleeve 12 with the first fixing member 15, the first fixing member 15 and the sleeve 12 come into indirect contact with each other via a heat insulating member. By providing a heat insulating member between the first fixing member 15 and the sleeve 12, heat transfer from the sleeve 12 to the first fixing member 15 can be blocked. Specifically, in an embodiment in which the heat insulating layer 14 is formed by applying aerogel to the second sleeve body 122, the first fixing member 15 and the sleeve 12 are connected at a distance via the heat insulating layer 14, and the heat insulating layer 14 can function as a heat insulating member. Specifically, in an embodiment in which connection bumps are provided on the partition portion 123 and the first fixing member 15 is brought into contact with the connection bumps, the first fixing member 15 and the connection bumps can be indirectly connected via the applied aerogel, and the aerogel can function as a heat insulating member.

[0050] Furthermore, gaps exist between both axial ends of the first fixing member 15 and both axial ends of the sleeve 12, thereby reducing heat transfer from both ends of the sleeve 12 to the first fixing member 15. Gaps are formed at intervals between both axial ends of the first fixing member 15 and the two connection portions 124 at both axial ends of the sleeve 12, thereby forming a heat insulating structure by utilizing the relatively low heat transfer performance of the air in the gaps and further reducing heat transfer from both ends of the sleeve 12 in the radial direction.

[0051] 5 to 8, specifically, the aerosol generation device 10 includes a second fixing member 16 and a third fixing member 17, which respectively fix the sleeve 12 at both ends of the sleeve 12. The second fixing member 16 and the third fixing member 17 are connected to two end surfaces of the sleeve 12, respectively, and engage with each other to fix the sleeve 12 along the axial direction.

[0052] Furthermore, the second fixing member 16 has an annular disk structure so as to completely cover one end surface of the sleeve 12. Specifically, the second fixing member 16 covers one end of the sleeve 12 where the accommodation space 11 extends into the accommodation cavity 125. Specifically, the second fixing member 16 is a plastic fixing member, which can reduce heat transfer from the sleeve 12 to the second fixing member 16. Specifically, the second fixing member 16 and the sleeve 12 are in indirect contact with each other via a heat insulating member, which reduces heat transfer from the sleeve 12 to the second fixing member 16. Furthermore, the heat insulating member may be aerogel applied to the end surface of the sleeve 12. Specifically, to reduce the complexity of attaching the first fixing member 15 and the second fixing member 16, the first fixing member 15 extends along the axial direction and is integrally molded with the second fixing member 16.

[0053] Furthermore, the third fixing member 17 is a plastic fixing member, and can reduce heat transfer from the sleeve 12 to the third fixing member 17. Specifically, the third fixing member 17 and the sleeve 12 are in indirect contact with each other via a heat insulating member, thereby reducing heat transfer from the sleeve 12 to the third fixing member 17. Furthermore, the heat insulating member may be an aerogel applied to the end surface of the sleeve 12.

[0054] As shown in FIGS. 5 to 9 , specifically, the aerosol generator 10 includes a support frame 18, the heater 13 is attached to the support frame 18, and multiple third fixing members 17 are provided. All of the multiple third fixing members 17 are connected to the support frame 18 and act on the same end surface of the sleeve 12 at intervals. The support frame 18 is located within the accommodating cavity 125 and supports the heater 13. The third fixing members 17 are also connected to the support frame 18, extend outside the accommodating cavity 125, and are bent radially toward the sleeve 12 so as to be able to abut against the end surface of the sleeve 12 in the axial direction. By providing multiple third fixing members 17 at intervals, notches can be formed between adjacent two third fixing members 17, reducing the contact area with the end surface of the sleeve 12 and further reducing heat transfer between the sleeve 12 and the third fixing members 17.

[0055] Furthermore, the plurality of third fixing members 17 are integrally molded with the support frame 18. Because the support frame 18 supports the heater 13, the entire support frame 18 and the third fixing members 17 can be made of a plastic material, and by taking advantage of the low thermal conductivity of plastic materials, the transfer of heat generated by the heater 13 to the sleeve 12 via the support frame 18 and the third fixing members 17 can be reduced, allowing more energy to be used to heat the aerosol-generating substrate 20. Note that in other embodiments, the third fixing members 17 and the support frame 18 may be provided independently.

[0056] Specifically, the support frame 18 has a hollow structure, and the heater 13 includes a connecting end 131 and a heating end 132, the connecting end 131 being receivable within the support frame 18, and the heating end 132 extending outside the support frame 18 and inserted into the aerosol-generating substrate 20. Furthermore, the aerosol-generating device 10 includes a gasket 19, which is housed within the support frame 18 and is sealed between the connecting end 131 and the support frame 18 to seal a through-hole 181 in the support frame 18 through which the heater 13 passes, thereby preventing dust and fluids from entering the inside of the support frame 18.

[0057] Furthermore, the aerosol generating device 10 includes a first base 21, which is housed within the support frame 18 and abuts against the connecting end 131, thereby stably supporting the connecting end 131.

[0058] Furthermore, one end of the support frame 18 away from the through-hole 181 has an open structure so that the heater 13, gasket 19, and first base 21 can be mounted within the support frame 18. The aerosol-generating device 10 also includes a second base 22 that is housed within the support frame 18 and closes the opening of the support frame 18. Specifically, the gasket 19 is made of silicone rubber, and the support frame 18, first base 21, and second base 22 are all made of plastic. These elements cooperate to block heat from the connecting end 131 of the heater 13 from being transferred radially and axially through the support frame 18 to the opening, thereby transferring as much heat as possible to the heating end 132, and further increasing the energy used to heat the aerosol-generating substrate 20 and improving energy utilization. Specifically, the second base 22 extends from inside the support frame 18 to outside the support frame 18, and is bent in conjunction with the bending of the third fixing member 17, thereby acting on the sleeve 12 in the axial direction together with the third fixing member 17.

[0059] As shown in FIGS. 5 to 10 , the aerosol-generating device 10 specifically includes an extractor 23, which defines the storage space 11. A portion of the extractor 23 is housed within the sleeve 12, and another portion is located outside the sleeve 12, with a gap between the sleeve 12 and the extractor 23. The extractor 23 provides a space into which the aerosol-generating substrate 20 is placed. A portion of the extractor 23 is located within the storage cavity 125, and another portion is located outside the storage cavity 125. In this way, when the aerosol-generating substrate 20 is tobacco, the aerosol-generating substrate 20 located within the sleeve 12 is heated and atomized at a high temperature, while the aerosol-generating substrate 20 located outside the sleeve 12 has a low temperature, making it easier for the user to inhale the aerosol-generating substrate 20.

[0060] In other embodiments, the entire extractor 23 may be located within the sleeve 12. Specifically, the sleeve 12 and the extractor 23 are spaced apart, i.e., a gap exists between the outer wall surface of the extractor 23 and the inner wall surface of the sleeve 12 that defines the receiving cavity 125, which helps to further block heat transfer from the extractor 23 to the sleeve 12.

[0061] Specifically, the extractor 23 has a through-hole 231 formed therein. The heater 13 extends through the through-hole 231 into the storage space 11, with a gap between the heater 13 and the inner wall of the through-hole 231. The extractor 23 includes a peripheral side wall 232 and a bottom wall 233 connected to the peripheral side wall 232. The peripheral side wall 232, together with the bottom wall 233, defines a cylindrical structure with one open end and the other closed end. The through-hole 231 is located in the bottom wall 233. After the aerosol-generating substrate 20 is placed in the storage space 11, it can abut against the bottom wall 233, which serves to restrict the position of the aerosol-generating substrate 20. Furthermore, the heater 13 extends through the through-hole 231 into the storage space 11 and can be inserted into the aerosol-generating substrate 20 in the storage space 11. Furthermore, since the heater 13 is not in contact with the inner wall of the through-hole 231, heat transfer from the heater 13 to the extractor 23 is effectively reduced, and more heat can be used to heat the aerosol-generating substrate 20.

[0062] Specifically, in an embodiment in which the aerosol-generating device 10 includes a support frame 18, the support frame 18 and the extractor 23 are spaced apart from each other. The support frame 18 is disposed adjacent to the bottom wall 233 of the extractor 23 and is spaced apart from each other along the axial direction within the accommodating cavity 125, thereby blocking heat transfer between the extractor 23 and the support frame 18. Specifically, in an embodiment in which the extractor 23 has a through-hole 231, the support frame 18 and the extractor 23 are spaced apart from each other, so that the gap between the sleeve 12 and the extractor 23, the gap between the support frame 18 and the extractor 23, and the through-hole 231 are sequentially connected to form a passageway for airflow to flow into the aerosol-generating substrate 20 to be inhaled by a user. In this way, the cold air flow preferentially enters the gap between the sleeve 12 and the extractor 23, absorbing the heat between them and fulfilling the role of cooling and insulation, and after its temperature rises, it enters the aerosol-generating substrate 20 along the through-holes 231, contributing to heating the aerosol-generating substrate 20 and improving energy utilization efficiency.

[0063] As shown in FIGS. 1 to 3, the aerosol generator 10 specifically includes an outer tube 24, and the heater 13 and the sleeve 12 are both housed inside the outer tube 24. The outer tube 24 is an external structural member of the aerosol generator 10 and comes into direct contact with the user. By placing the sleeve 12 inside the outer tube 24, the insulating effect of the sleeve 12 effectively reduces heat transferred to the outer tube 24 in the radial direction, lowering the temperature of the outer tube 24 and providing a good user experience.

[0064] In another embodiment, the outer tube 24 includes two nested tubes (not shown), which are connected at their edges to form a vacuum cavity between them that surrounds the sleeve 12, and the entire sleeve 12 is located within the space surrounded by the vacuum cavity. The outer tube 24 has a structure similar to that of the sleeve 12, and has an internal vacuum cavity to provide thermal insulation, so that the outer tube 24 and the sleeve 12 cooperate to achieve good thermal insulation. In another embodiment, the sleeve 12 can be directly used as the outer tube 24, and in this case, the heater 13 and the receiving space 11 are both located within the receiving cavity 125 defined in the sleeve 12.

[0065] Specifically, the aerosol generating device 10 includes a power supply assembly 25 mounted inside the outer tube 24, which is connected to the heater 13 to power the heater 13, which in turn converts electrical energy into heat to heat and atomize the aerosol generating substrate 20.

[0066] Specifically, in this embodiment, the outer tube 24 includes a first tube 241 and a second tube 242 detachably connected to the first tube 241. The first tube 241 and the second tube 242 are engaged and connected along the axial direction to jointly define a space for accommodating each functional component. Specifically, the power supply assembly 25 is mounted within the second tube 242. The heater 13, the sleeve 12, and the accommodating space 11 are located more within the first tube 241 in the axial direction.

[0067] Specifically, as shown in Figures 1 and 5 to 7, when first fixing member 15 and second fixing member 16 are integrally molded, one end of first fixing member 15 away from second fixing member 16 is clamped between first tube 241 and second tube 242, whereby first fixing member 15 is stably locked inside outer tube 24 along the radial and axial directions, and further, first fixing member 15 fixes sleeve 12 in the radial direction, and indirectly, second fixing member 16 fixes sleeve 12 in the axial direction.

[0068] Specifically, the aerosol generation device 10 includes a support base 26 fixed inside the second tube 242. The third fixing member 17 abuts against the support base 26, and the support base 26 supports the third fixing member 17 along the axial direction. Specifically, the second base 22 is provided on the support base 26, and the support base 26 supports the second base 22, thereby indirectly supporting the third fixing member 17 and thereby fixing the sleeve 12 in the axial direction. Furthermore, the first fixing member 15 is connected to the support base 26, and the support base 26 can also support the entire assembly consisting of the first fixing member 15 and the second fixing member 16 in the vertical direction.

[0069] 1 , 6 , 7 and 10 , specifically, the portion of the extractor 23 located outside the sleeve 12 is fixedly connected to the outer tube 24. A through-hole 243 for inserting the aerosol-generating substrate 20 into the accommodating space 11 is formed in the outer tube 24 at a position corresponding to the accommodating space 11, and a through-groove 234 communicating with the through-hole 243 is formed in the extractor 23. The through-groove 234 extends along the axial direction and communicates with the gap between the sleeve 12 and the extractor 23, allowing external airflow to enter the through-groove 234 and the gap between the sleeve 12 and the extractor 23 from the through-hole 243.

[0070] 5 to 7 , specifically, the insulating layer 14 formed by applying aerogel to the outermost periphery of the sleeve 12 extends axially, and the portion of the second base 22 bent together with the third fixing member 17 radially extends beyond the third fixing member 17 and abuts against the insulating layer 14, achieving a tight seal. This blocks communication between the accommodating cavity 125 and the internal space of the second tube 242 at one end of the accommodating cavity 125. Sealing the connection between the first fixing member 15 and the first and second tubes 241 and 242 blocks communication between the side of the entire assembly made up of the first fixing member 15 and the second fixing member 16 facing the first tube 241 and the second tube 242. The gap between the entire assembly and the first tube 241 communicates only with the accommodating cavity 125 in the sleeve 12. This prevents dust, fluid, and the like from entering the accommodating cavity 125 and adversely affecting the power supply assembly 25.

[0071] In the aerosol generator 10 according to the present application, the radial transmission of heat generated by the entire heater 13 is blocked, so that the large amount of heat generated by the heater 13 is concentrated within the accommodation space 11 to heat the aerosol-generating substrate 20, thereby realizing efficient heat utilization and improving energy utilization by 8% or more. At the same time, this contributes to reducing the heat transmitted to the periphery of the aerosol generator 10 along the radial direction, thereby contributing to lowering the temperature of the periphery of the aerosol generator 10 and preventing the temperature of the periphery of the aerosol generator 10 from being too high and affecting the user's experience. The technical solution of the present application can lower the temperature of the periphery by 5°C or more.

[0072] The technical features of the embodiments described above can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0073] The above examples merely illustrate some embodiments of the present invention, and although the descriptions are specific and detailed, they should not be understood as limiting the scope of the present invention. It should be noted that those skilled in the art can make some modifications and improvements within the scope of the present invention without departing from the spirit of the present invention. Therefore, the patent scope of the present invention shall be determined by the appended claims.

Claims

1. An aerosol generating device having a storage space for storing an aerosol-generating substrate, a heater at least partially inserted into the accommodation space so as to heat the aerosol-generating substrate; a sleeve including a first sleeve body and a second sleeve body, the first sleeve body and the second sleeve body being sealed at both ends to form a vacuum space surrounding the outside of the accommodation space, the length of the vacuum space being greater than the length of the heater; The sleeve further includes a second fixing member and a third fixing member, the second fixing member and the third fixing member fixing the sleeve at both ends thereof, respectively; An aerosol generating device further comprising a support frame, wherein the heater is attached to the support frame, and wherein the third fixing members are multiple, the multiple third fixing members being connected to the support frame at intervals and acting together on the same end surface of the sleeve.

2. The aerosol generating device described in claim 1, characterized in that the sleeve further includes a third sleeve body, and the first sleeve body and the second sleeve body are each sealed with the third sleeve body at both ends so as to form a multi-layer vacuum space surrounding the outside of the storage space.

3. 3. The aerosol generating device according to claim 2, wherein the first sleeve body, the second sleeve body, and the third sleeve body are all covered with a heat insulating layer on the side opposite to the heater.

4. 2. The aerosol generating device according to claim 1, wherein the wall thickness of the first sleeve body and the second sleeve body is less than 0.2 mm.

5. 2. The aerosol generating device according to claim 1, further comprising a first fixing member for fixing the sleeve, the first fixing member abutting an area of ​​the sleeve corresponding to the vacuum space on the opposite side of the sleeve from the heater.

6. 6. The aerosol generating device according to claim 5, wherein the first fixing member acts on an intermediate position of the sleeve corresponding to the vacuum space.

7. The aerosol generating device according to claim 5 , wherein the first fixing member and the sleeve are in indirect contact with each other via a heat insulating member.

8. The aerosol generating device according to claim 5, wherein a gap exists between both axial ends of the first fixing member and both axial ends of the sleeve.

9. 2. The aerosol generating device of claim 1, further comprising an extractor, the extractor defining the storage space, at least a portion of the extractor being housed within the sleeve, and the sleeve and the extractor being spaced apart.

10. 10. The aerosol generating device according to claim 9, wherein a through hole is formed in the extractor, the heater extends into the storage space through the through hole, and there is a gap between the heater and the inner wall of the through hole.

11. 10. The aerosol generating device according to claim 9, comprising a support frame, the heater being attached to the support frame, and the support frame and the extractor being spaced apart.

12. 2. The aerosol generating device according to claim 1, further comprising an outer tube, wherein the heater and the sleeve are both housed inside the outer tube.

13. 13. The aerosol generating device of claim 12, wherein the outer tube comprises two nested tubes, the two tubes being connected at edges such that a vacuum cavity is formed between the two tubes surrounding the sleeve.

Images