Heating body and aerosol generation device

Abstract

To improve the heat utilization factor of a heating body and to reduce heat loss.SOLUTION: The heating body 20 includes a heating cylinder 21 and a heat generating member. The bottom wall 212 and the side wall 211 of the heating barrel enclose to form an accommodating cavity for accommodating the aerosol product 40, and the accommodating cavity is in communication with the aerosol outlet 101. The heating member is disposed on the side wall. The bottom wall and / or the side wall has a support protrusion facing the accommodating cavity, and the support protrusion is configured to support the aerosol product to form an air inlet cavity between the aerosol product and the bottom wall. The side wall has a contact convex portion and a concave portion, the contact convex portion is disposed toward the accommodating cavity and is in thermal conductive contact with an outer peripheral surface of the aerosol product, and the concave portion forms an enclosed air inlet passage together with the outer peripheral surface of the aerosol product. The air inlet passage communicates the aerosol outlet with the air inlet cavity. The heating body heats the aerosol product by using two heating manners: direct contact and hot air flow.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to the following application, the entire contents of which are incorporated herein by reference:

[0002] The application date is August 7, 2024, the application number is 2024219046010, and the title is a Chinese utility model registration application for a non-combustion heating device and a non-combustion heating system. The application date is August 30, 2024, the application number is 2024221417856, and the name is a Chinese utility model registration application for a heat generating member and aerosol generating device. The application date is August 30, 2024, the application number is 2024221367518, and the name is a Chinese utility model registration application for a heating body and aerosol generating device. The application date is August 30, 2024, the application number is 2024221309762, and the name is a Chinese utility model registration application for a heating structure and atomization device. The application date is October 30, 2024, the application number is 2024226355714, and the name is Chinese utility model registration application for atomization apparatus and atomization device.

[0003] The present application relates to the technical field of aerosol generation, and in particular to heating elements and aerosol generating devices. [Background technology]

[0004] The aerosol generating device generally has a receiving cavity in which the aerosol product is inserted, and the aerosol product is heated by a direct contact between the heating element and the heating element to generate the aerosol.

[0005] In order to improve the heating uniformity of the aerosol product, the prior art uses a hot air flow to heat the aerosol product, where external cold air enters the aerosol generating device through an air inlet, is heated by a heating element, and then forms a hot air flow. The hot air flow enters the aerosol generating device through the bottom of the containing cavity, and after heating the aerosol product, the generated aerosol flows out through the aerosol outlet. The heating element is often attached to the bottom of the aerosol generating device, and the heat from the heating element is transferred upward or downward along the aerosol generating device. However, most of the heat transferred downward cannot be utilized by the aerosol generating device, resulting in a large heat loss in the aerosol generating device. Summary of the Invention

[0006] The present application provides a heating element and an aerosol generating device to solve the technical problem of high heat loss in the aerosol generating device.

[0007] According to a first aspect, in one embodiment, there is provided a heating body including a heating barrel and a heat-generating member.

[0008] The heating barrel has one open end and the other closed end, and the bottom wall and side wall of the heating barrel surround a storage cavity for storing an aerosol product, and the storage cavity is connected to an aerosol outlet.

[0009] The heat generating member is disposed on the side wall.

[0010] The bottom wall and / or the side wall have support protrusions facing the storage cavity, which are used to support the aerosol product and form an intake cavity between the aerosol product and the bottom wall.

[0011] The side wall has a contact protrusion and a recess, the contact protrusion facing the receiving cavity and in thermally conductive contact with the outer circumferential surface of the aerosol product, and the recess is used to form an enclosed intake passage together with the outer circumferential surface of the aerosol product, the intake passage connecting the aerosol outlet and the intake cavity.

[0012] In one embodiment, the side wall has a first contact area and a second contact area arranged in sequence along the insertion direction of the aerosol product.

[0013] The first contact area or the second contact area is spaced apart so as not to contact the outer circumferential surface of the aerosol product, or the first contact area has a different contact area with the outer circumferential surface of the aerosol product than the second contact area.

[0014] In one embodiment, the first contact area has a first annular clearance for spacing the first contact area from the outer periphery of the aerosol product so as to be out of contact, and the minimum inner diameter of the first contact area is greater than the minimum inner diameter of the second contact area.

[0015] Alternatively, the second contact area may have a second annular clearance for spacing the second contact area from the outer circumferential surface of the aerosol product so that the second contact area is not in contact with the outer circumferential surface of the aerosol product, and the minimum inner diameter of the second contact area may be greater than the minimum inner diameter of the first contact area.

[0016] In one embodiment, the contact protrusion includes a first contact portion provided in the first contact region, the first contact portion being a plurality of first protrusions provided on an inner wall of the first contact region, the plurality of first protrusions being spaced apart along the circumferential direction of the containing cavity, and the first protrusions are used to contact the outer peripheral surface of the aerosol product.

[0017] In one embodiment, the contact protrusion includes a second contact portion provided in the second contact region, the second contact portion being a plurality of second protrusions provided on the inner wall of the second contact region, the plurality of second protrusions being spaced apart along the circumferential direction of the containing cavity, and the second protrusions are used to contact the outer peripheral surface of the aerosol product.

[0018] In one embodiment, the contact protrusion further includes a first contact portion provided in the first contact region, the first contact portion being a plurality of first protrusions provided on an inner wall of the first contact region, the plurality of first protrusions being spaced apart along the circumferential direction of the containing cavity, and the first protrusions are used to contact the outer peripheral surface of the aerosol product.

[0019] The contact area between the first contact area and the outer peripheral surface of the aerosol product is larger than the contact area between the second contact area and the outer peripheral surface of the aerosol product, and the contact area between each of the second protrusions and the aerosol product is smaller than the contact area between each of the first protrusions and the aerosol product, or the total contact area between all of the second protrusions and the aerosol product is smaller than the total contact area between all of the first protrusions and the aerosol product.

[0020] Alternatively, the contact area between the first contact area and the outer peripheral surface of the aerosol product is smaller than the contact area between the second contact area and the outer peripheral surface of the aerosol product, and the contact area between each of the second protrusions and the aerosol product is larger than the contact area between each of the first protrusions and the aerosol product, or the total contact area between all of the second protrusions and the aerosol product is larger than the total contact area between all of the first protrusions and the aerosol product.

[0021] In one embodiment, the side wall has a first heating area and a second heating area along the insertion direction of the aerosol product, and the intake passage is used for airflow to enter the aerosol product after passing through the first heating area and the second heating area in sequence.

[0022] The heat generating members include a first heat generating member disposed in the first heating region of the heating barrel, and a second heat generating member disposed in a second heating region of the heating barrel.

[0023] In one embodiment, the first heat generating member and the second heat generating member are both resistance type heat generating members, and the first heat generating member and the second heat generating member are connected in parallel.

[0024] In one embodiment, a first electrical connection member, a second electrical connection member, and a third electrical connection member are disposed on the side wall. The first heat generating member and the second heat generating member each have two electrical connection terminals, the two electrical connection terminals of the first heat generating member being electrically connected to the first electrical connection member and the third electrical connection member, respectively, and the two electrical connection terminals of the second heat generating member being electrically connected to the second electrical connection member and the third electrical connection member, respectively. The first electrical connection member and the second electrical connection member are used to electrically connect to the same electrode of an external power supply, and the third electrical connection member is used to electrically connect to another electrode of the external power supply.

[0025] In one embodiment, the bottom wall has a support protrusion facing the accommodating cavity. The side wall has a first region and a second region along the axial direction of the heating barrel, the first region being located away from the bottom wall and the second region being located close to the bottom wall, and the heat-generating member is fixed to the second region of the side wall.

[0026] In one embodiment, one or more heat generating members are arranged, and the heat generating members form at least one layer of heating rings along the circumferential direction of the side wall.

[0027] When a plurality of heat generating members are arranged, the heat generating members are connected in parallel and arranged along the axial direction of the heating barrel.

[0028] In one embodiment, one heat generating member is disposed, and the heat generating member forms one layer of the heating ring along the circumferential direction of the side wall, and connection electrodes for electrically connecting to a power source are fixed to both ends of the heat generating member along the circumferential direction of the side wall.

[0029] In one embodiment, a connecting member is provided between the heat generating member and the connecting electrode, and the connecting member and the connecting electrode are provided in a one-to-one correspondence, and the connecting member is connected to the heat generating member and the connecting electrode, respectively, along the axial direction of the heating barrel.

[0030] One of the two connection members is used to allow current to flow from the end edge of the heat-generating member to the heat-generating member via the connection electrode, and the other of the two connection members is used to allow current in the heat-generating member to flow from the end edge to the connection electrode.

[0031] According to a second aspect, in one embodiment, there is provided an aerosol generating device including a device main body and the heating element according to any one of the above embodiments.

[0032] The device body has an aerosol outlet for insertion of the aerosol product.

[0033] The heating element is attached to the device body, the bottom wall is spaced apart from the device body, the storage cavity is connected to the aerosol outlet, and the intake passage connects the aerosol outlet and the intake cavity.

[0034] In one embodiment, the device body comprises: a mounting base having the heating body provided therein; a reflective heat insulating layer disposed between the mounting base and the heating element and surrounding the outer surface of the heating element.

[0035] The beneficial effects of the present application are as follows:

[0036] In the heating element and aerosol generating device of the above embodiment, during the heat transfer process of the heating element, on the one hand, the contact protrusion on the side wall of the heating barrel contacts the outer surface of the aerosol product to heat the aerosol product through direct contact, and on the other hand, external cold air can enter the intake passage formed by the recess on the side wall of the heating barrel and the aerosol product. The heating barrel heats the airflow in the intake passage to form a hot airflow, and the hot airflow enters the aerosol product from the intake cavity on one side of the aerosol product in the axial direction, thereby heating the aerosol product. In this way, the heating element uses two heating methods, direct contact and hot airflow, to heat the aerosol product, thereby improving the heat utilization rate of the heating element and contributing to reducing heat loss from the heating element. Furthermore, because the heating element is attached to the device body and the bottom wall of the heating barrel of the heating element is spaced apart from the device body, less heat is transferred downward away from the receiving cavity of the heating barrel, thereby reducing heat loss from the aerosol generating device. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a schematic diagram of the three-dimensional structure of an aerosol generating device with an aerosol product inserted therein, in one embodiment. [Figure 2] FIG. 1 is a top view of an aerosol generating device with an aerosol product inserted, according to one embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along the line BB in FIG. 2. [Figure 5] FIG. 2 is a schematic diagram illustrating the internal configuration of a heating barrel according to one embodiment. [Figure 6] 1 is a cross-sectional view of an aerosol generating device provided in one embodiment. [Figure 7] FIG. 10 is a cross-sectional view of a bracket assembly and heater portion in one embodiment. [Figure 8]FIG. 1 is a schematic diagram of a heating element provided in one embodiment. [Figure 9] FIG. 10 is a schematic diagram of a heating element provided in another embodiment. [Figure 10] FIG. 9 is a schematic configuration diagram of FIG. 8 from another viewpoint. [Figure 11] FIG. 10 is a schematic diagram illustrating the overall configuration of a heating body according to another embodiment. [Figure 12] FIG. 12 is a cross-sectional view of the heating element in FIG. [Figure 13] FIG. 10 is a schematic cross-sectional view of a heating barrel according to another embodiment. [Figure 14] FIG. 2 is a schematic diagram of the three-dimensional structure of a heater barrel in one embodiment. [Figure 15] FIG. 15 is a schematic diagram of the three-dimensional structure of the heater barrel from another perspective of FIG. 14. [Figure 16] FIG. 2 is a schematic diagram illustrating the configuration of a heat generating member in an expanded state according to one embodiment. [Figure 17] FIG. 10 is a schematic diagram of a heat generating member in an expanded state according to another embodiment. [Figure 18] FIG. 10 is a schematic diagram of a three-dimensional structure of a heating barrel in another embodiment. [Figure 19] FIG. 10 is a cross-sectional view of an aerosol generating device provided in another embodiment. [Figure 20] FIG. 1 is an exploded view of an atomization device provided in one embodiment. [Figure 21] FIG. 1 is a cross-sectional view of an atomization device provided in one embodiment. [Figure 22] FIG. 22 is a partial enlarged view of a portion A in FIG. 21. DETAILED DESCRIPTION OF THE INVENTION

[0038] The present application will be described in more detail below with reference to the drawings through specific embodiments. Similar components in different embodiments have the same associated component numbers. In the following detailed description, many details are described to make the present application easier to understand. However, those skilled in the art will readily understand that some features may be omitted or substituted with other components, materials, or methods under different circumstances. In some cases, some operations related to the present application are not shown or described herein to avoid obscuring the core of the present application with excessive description. However, those skilled in the art will be able to fully understand the relevant operations based on the description in the specification and general knowledge in the art without the need for detailed description of these related operations.

[0039] Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Additionally, the steps or actions in the method descriptions may be reordered or rearranged in any manner apparent to one of ordinary skill in the art. Thus, the various orders in the specification and figures are solely for the purpose of clarifying particular embodiments and do not imply a required order unless otherwise specified that a particular order must be followed.

[0040] The numbering of parts in this specification, such as "first", "second", etc., is only used to distinguish the objects described and does not have any sequential or technical meaning. "Connected" and "coupled" as used in this application include both direct and indirect connections (couplings) unless otherwise stated.

[0041] See Figures 1 to 5 for several embodiments of the heating element and aerosol generating device.

[0042] 1 to 4, the aerosol generating device according to the embodiment of the present application includes a device body and a heating element 20 (the heating element 20 is also called a heating assembly). The device body has an aerosol outlet 101 through which the aerosol flows out, and the aerosol outlet 101 can also be used to insert an aerosol product 40 into the aerosol generating device.

[0043] The heater 20 is attached to the device body and includes a heater barrel 21 with one open end and the other closed end. The opening of the heater barrel 21 faces the aerosol outlet 101, and the heater barrel 21 has a substantially cylindrical structure and includes a bottom wall 212 and a side wall 211. The bottom wall 212 and the side wall 211 of the heater barrel 21 form a storage cavity that communicates with the aerosol outlet 101 and is used to store the aerosol product 40. The aerosol product 40 can be inserted into the storage cavity through the aerosol outlet 101 to attach the aerosol product 40 to the aerosol generating device.

[0044] The bottom wall 212 of the heating barrel 21 and the device body are spaced apart in the axial direction of the heating barrel 21, thus reducing the heat transferred from the heating barrel 21 to the device body in the direction away from the receiving cavity. Most of the heat from the heating barrel 21 is utilized by the aerosol product 40, thus improving the heat utilization rate of the heating element 20 and contributing to reducing the heat loss of the aerosol generating device.

[0045] 3 and 4, in some embodiments, the heating barrel 21 is suspended within the device body, and an outer flange 213 connected to the side wall 211 of the heating barrel 21 is provided at the open end of the heating barrel 21. The outer flange 213 extends radially outward from the heating barrel 21 to form a radial outer flange. The outer flange 213 of the heating barrel 21 abuts against the device body in the axial direction of the heating barrel 21, thereby fixing the position of the heating barrel 21 in the device body.

[0046] In one embodiment, the device body includes a housing 10 having a cavity, a thermally insulated cylinder 14, and a sealing member 12a. An aerosol outlet 101 is located on the housing 10 and communicates with the cavity. The thermally insulated cylinder 14, the heating element 20, and the sealing member 12a are all disposed within the cavity. The thermally insulated cylinder 14 may be mounted so as to be supported within the cavity by a support provided on the housing 10. The thermally insulated cylinder 14 is open at both axial ends, with one opening sealed by a plug 15 and the other opening sealingly engaged with the sealing member 12a. In another embodiment, the thermally insulated cylinder 14 may be open at one axial end and closed at the other axial end, with the open end sealingly engaged with the sealing member 12a.

[0047] The heating barrel 21 is located within the thermal insulation barrel 14 and is arranged coaxially with the thermal insulation barrel 14. The bottom wall 212 of the heating barrel 21 and the plug 15 are arranged with a gap in the axial direction of the heating barrel 21, and the side wall 211 of the heating barrel 21 is also arranged with a gap from the barrel wall of the thermal insulation barrel 14. This direct contact between the heating barrel 21 and the thermal insulation barrel 14 can reduce heat transfer to the thermal insulation barrel 14. The sealing member 12a is provided with a communication channel 121 arranged coaxially with the thermal insulation barrel 14, and communication between the storage cavity and the aerosol outlet 101 can be achieved through the communication channel 121.

[0048] 3 and 4, in one embodiment, a support portion extending into the thermal insulation barrel 14 is disposed on the wall of the thermal insulation barrel 14. The support portion may include a support arm 141, one end of which is connected to the wall of the thermal insulation barrel 14 and the other end of which is suspended within the thermal insulation barrel 14. The support arm 141 is annular, and the outer flange 213 of the heating barrel 21 is supported by the support arm 141. The sealing member 12a has a portion that extends into the thermal insulation barrel 14 and can abut against the outer flange 213 in the axial direction of the heating barrel 21. In this way, the support arm 141 and the sealing member 12a clamp and fix the heating barrel 21 within the thermal insulation barrel 14, thereby fixing the position of the heating barrel 21 within the thermal insulation barrel 14. Furthermore, the sealing member 12a abuts against the outer flange 213 in the axial direction of the heating barrel 21, thereby sealing the sealing member 12a and the heating barrel 21. In this way, the heating barrel 21 is suspended within the insulating barrel 14, reducing the contact area between the heating barrel 21 and the insulating barrel 14, and reducing the amount of heat transferred to the bottom of the aerosol generating device when the heating barrel 21 separates from the storage cavity due to direct contact, thereby reducing heat loss and contributing to improving the thermal utilization rate of the aerosol generating device.

[0049] Of course, in other embodiments, the device body may include a housing 10 having a cavity, in which the heated barrel 21 is located within the cavity, the bottom wall 212 and the side wall 211 of the heated barrel 21 are both spaced apart from the housing 10, the housing 10 is provided with a support arm extending into the cavity, and the outer surface of the side wall 211 of the heated barrel 21 is provided with a constricted portion, and the heated barrel 21 is suspended and fixed within the housing 10 by cooperation of the support arm and the constricted portion, which also reduces the amount of heat transferred by the heated barrel 21 away from the receiving cavity to the bottom of the aerosol generation device due to direct contact, reduces heat loss, and contributes to improving the heat utilization rate of the aerosol generation device.

[0050] 2 to 4, in one embodiment, the housing 10 is provided with a positioning ring 11 at the aerosol outlet 101, and the sealing member 12a is sandwiched between the insulating barrel 14 and the positioning ring 11 in the axial direction of the heating barrel 21, thereby fixing the positions of the sealing member 12a and the positioning ring 11 within the housing 10. The positioning ring 11 and the sealing member 12a surround each other to form a ring groove. The device main body further includes a clamping member 13 having an annular structure. The clamping member 13 is mounted in the ring groove and is made of a rubber material. The clamping member 13 has protrusions 131 extending radially inward. The protrusions 131 are arranged at equal intervals around the periphery of the clamping member 13, allowing the aerosol product 40 to enter the housing 10 from the aerosol outlet 101, pass through the communication channel 121 of the sealing member 12a, and enter the receiving cavity formed by the surrounding heating barrel 21. After the aerosol product 40 enters the storage cavity, the clamping member 13 can elastically abut against the outer surface of the aerosol product 40 in the radial direction of the heating barrel 21 via the protrusion 131, thereby restricting the aerosol product 40 from escaping from the storage cavity.

[0051] 3 to 5, in some embodiments, the side wall 211 of the heating barrel 21 has a contact protrusion protruding into the receiving cavity, and the side wall 211 of the heating barrel 21 further has a recess 2113. After the aerosol product 40 is installed in the receiving cavity, the contact protrusion comes into thermally conductive contact with the outer surface of the aerosol product 40 to transfer heat from the heating barrel 21 to the aerosol product 40, thereby realizing heating of the aerosol product 40 through direct contact. After the contact protrusion comes into contact with the outer surface of the aerosol product 40, the recess 2113 in the side wall 211 of the heating barrel 21 surrounds the outer surface of the aerosol product 40 to form an intake passage 31 communicating with the aerosol outlet 101, and the external cold air that enters the housing 10 from the aerosol outlet 101 can enter the intake passage 31 through the gap between two adjacent protrusions 131 in the clamping member 13 and the annular gap between the sealing member 12a and the aerosol product 40.

[0052] 5 , in one embodiment, the contact protrusions on the side wall 211 of the heating barrel 21 include contact ribs 2112 extending in the axial direction of the heating barrel 21. The length of the contact ribs 2112 may be equal to or slightly shorter than the dimension of the side wall 211 of the heating barrel 21 in the axial direction of the heating barrel 21. There may be a plurality of contact ribs 2112, and any two adjacent contact ribs 2112 are arranged at equal intervals in the circumferential direction of the heating barrel 21. A recess 2113 is formed in the side wall 211 of the heating barrel 21 between any two adjacent contact ribs 2112. The recess 2113 is formed as a groove extending in the axial direction of the heating barrel 21. The multiple recesses 2113 are arranged at equal intervals in the circumferential direction of the heating barrel 21, and the intake passages 31 formed by the recesses 2113 and the outer circumferential surface of the aerosol product 40 are also arranged at equal intervals in the circumferential direction of the heating barrel 21. In this way, a plurality of intake passages 31 extending in the axial direction of the heating barrel 21 and arranged at equal intervals in the circumferential direction are formed between the aerosol product 40 and the side wall 211 of the heating barrel 21. This contributes to reducing the flow resistance of the airflow in the intake passages 31, further reducing the suction resistance of the aerosol generating device, and also contributes to realizing a uniform distribution of the intake airflow in the circumferential direction of the aerosol product 40.

[0053] In another embodiment, the contact protrusions on the side wall 211 of the heating barrel 21 may further include circular dot-like protrusions. There are a plurality of circular dot-like protrusions, and two adjacent circular dot-like protrusions are arranged at equal intervals in the circumferential and axial directions of the heating barrel 21. A recess 2113 is formed in the side wall 211 of the heating barrel 21 between the two adjacent circular dot-like protrusions, and the recess 2113 and the outer peripheral surface of the aerosol product 40 surround the intake passage 31, thereby forming the intake passage 31. In this way, the intake passage 31 can also extend in the axial direction of the heating barrel 21, thereby reducing the flow resistance of the airflow in the intake passage 31 and reducing the suction resistance.

[0054] In some other embodiments, the contact protrusions on the side wall 211 of the heating barrel 21 may include a wavy band structure or other irregular structure, as long as the contact protrusions can contact the outer surface of the aerosol product 40 and the recesses 2113 formed between two adjacent contact protrusions surround the outer surface of the aerosol product 40 to form an intake passage 31 communicating with the aerosol outlet 101.

[0055] The side wall 211 of the heating barrel 21 has a contact protrusion and a recess 2113, and the contact protrusion can be in thermal conduction contact with the outer circumferential surface of the aerosol product 40, and the recess 2113 can form the structure of an enclosed intake passage 31 together with the outer circumferential surface of the aerosol product 40. Meanwhile, the direct contact between the contact protrusion and the outer circumferential surface of the aerosol product 40 transfers heat from the heating barrel 21 to the aerosol product 40, thereby realizing heating of the aerosol product 40. On the other hand, when external cold air flows through the intake passage 31, the contact between the side wall 211 of the heating barrel 21 and the air flow in the intake passage 31 causes the heat of the side wall 211 of the heating barrel 21 to be transferred to the air flow in the intake passage 31, forming a hot air flow, which makes it easier to heat the aerosol product 40 using the subsequent hot air flow and improves the heating uniformity of the aerosol product 40. In this way, heating of the aerosol product 40 is achieved using the method of direct contact and heating by hot air flow, which effectively improves the thermal utilization rate of the heating body 20, further reducing the heat loss of the aerosol generation device and reducing the energy consumption of the aerosol generation device.

[0056] In some embodiments, contact protrusions may be embedded within the aerosol product 40 to increase the contact area between the aerosol product 40 and the side wall 211 of the heating barrel 21, thereby improving the heat transfer efficiency between the heating barrel 21 and the aerosol product 40.

[0057] 5, in one embodiment, the contact rib 2112 has a thickness extending in the circumferential direction of the heating barrel 21, and the thickness of the contact rib 2112 may be set to gradually decrease in the radial direction of the heating barrel 21 from the side wall 211 of the heating barrel 21 toward the accommodating cavity. This makes it easier to fit the contact rib 2112 into the aerosol product 40, and the contact area between the contact rib 2112 and the aerosol product 40 increases, improving the heat transfer efficiency between the heating barrel 21 and the aerosol product 40. Meanwhile, fitting the contact rib 2112 into the aerosol product 40 can reduce the probability of the aerosol product 40 detaching from the accommodating cavity.

[0058] Furthermore, in one embodiment, the thickness dimension of the contact rib 2112 may be set to gradually increase in the axial direction of the heating barrel 21 from the open end to the closed end of the heating barrel 21. This allows the contact rib 2112 to be firmly pressed into the aerosol product 40 in the axial direction of the heating barrel 21, thereby further increasing the contact area between the aerosol product 40 and the heating barrel 21, improving heat transfer efficiency, and further reducing the probability of the aerosol product 40 detaching from the containing cavity.

[0059] In another embodiment, the contact protrusions may be configured to include point-like protrusions having a shape similar to a cone, with tips located radially inward in the radial direction of the heating barrel 21, and can be fitted into the aerosol product 40 via the tips of the point-like protrusions, thereby increasing the contact area between the contact protrusions and the aerosol product 40.

[0060] To ensure that the hot airflow generated in the intake passage 31 can heat the aerosol product 40, the bottom wall 212 and / or side wall 211 of the heating barrel 21 must be provided with a support protrusion facing the receiving cavity. The support protrusion is configured to support the aerosol product 40 along the axial direction of the heating barrel 21, thereby preventing contact between the aerosol product 40 and the bottom wall 212 of the heating barrel 21. This forms an intake cavity 32 between the aerosol product 40 and the bottom wall 212 of the heating barrel 21, which communicates with the intake passage 31. The hot airflow generated in the intake passage 31 can enter the intake cavity 32 and then enter the aerosol product 40 from the axial end of the aerosol product 40 to heat it. The aerosol generated by heating can pass through the aerosol outlet 101 and be discharged from the other end of the aerosol product 40.

[0061] 5, in some embodiments, the support protrusions may be provided so as to be located on the bottom wall 212 of the heating barrel 21. There are a plurality of support protrusions, and two adjacent support protrusions are provided at intervals on the bottom wall 212 of the heating barrel 21 so that a communication gap 2122 is formed between two adjacent support protrusions, and communication between the intake passage 31 and the intake cavity 32 can be achieved through the communication gap 2122.

[0062] 5 , in one embodiment, the support protrusion is configured to include a support rib 2121. The support rib 2121 is arranged to extend in the radial direction of the heating barrel 21, and the dimension of the support rib 2121 in the radial direction of the heating barrel 21 is smaller than the radial dimension of the storage cavity. Thus, an intake cavity 32 is formed between the bottom wall 212, on which the support rib 2121 is not provided, and the aerosol product 40, and a communication gap 2122 is formed between two adjacent support ribs 2121, and the communication gap 2122 connects the intake passage 31 and the intake cavity 32.

[0063] 5, in one embodiment, the number of support ribs 2121 may be set to be equal to the number of contact ribs 2112, and the support ribs 2121 and the contact ribs 2112 may be connected in a one-to-one correspondence. In this way, direct communication between the communication gap 2122 and the intake passage 31 in the axial direction of the heater barrel 21 is ensured, and the resistance force of the hot air flow entering the intake cavity 32 from the intake passage 31 is reduced, thereby reducing the suction resistance.

[0064] In another embodiment, the support protrusions may be configured to include cylindrical dot-like protrusions. The cylindrical dot-like protrusions are positioned on the bottom wall 212 of the heating barrel 21 to support the axial end surface of the aerosol product 40. A communication gap 2122 is formed between two adjacent cylindrical dot-like protrusions, and an intake cavity 32 is further formed between the bottom wall 212 and the aerosol product 40 where no cylindrical dot-like protrusions are provided. In this way, communication between the intake passage 31 and the intake cavity 32 can be achieved through the communication gap 2122.

[0065] Of course, in other embodiments, some of the support protrusions may be configured to be located on the side wall 211 of the heating barrel 21. For example, the support protrusions include a support rib 2121, which is spaced apart from the bottom wall 212 of the heating barrel 21 and connected to the contact rib 2112. A communicating gap 2122 is formed between two adjacent support ribs 2121, and the aerosol product 40 is supported by the support ribs 2121, thereby forming an intake cavity 32 between the bottom wall 212 of the heating barrel 21 and the aerosol product 40, and the communicating gap 2122 connects the intake passage 31 and the intake cavity 32.

[0066] In an embodiment in which the communication gap 2122 between the two support protrusions provides communication between the intake passage 31 and the intake cavity 32, the hot air flow in the intake passage 31 can enter the intake cavity 32 through the communication gap 2122 and then enter the aerosol product 40 from the end of the aerosol product 40, thereby heating the aerosol product 40. A portion of the hot air flow can be stored through the intake cavity 32, ensuring the continuity of aerosol generation by the aerosol product 40.

[0067] In one embodiment, the heating element 20 includes a heat generating element for generating heat. The heat generating element may be disposed on the side wall 211, and the heat generating element may be any heat generating element such as a heating film, a heating circuit, a heating sheet, or a heating mesh. Illustratively, the heating element 20 includes a heating film adhered to the outer circumferential surface of the heating barrel 21. The heating film generates heat after being energized and transfers the heat to the airflow and the aerosol product 40 through the heating barrel 21.

[0068] 3 to 5, in one embodiment, the side wall 211 of the heating barrel 21 or the entire heating barrel 21 may be configured as a conductive ceramic structure. That is, at least a portion of the heating barrel 21 is made of a conductive ceramic material, and the heating barrel 21 itself can generate heat after being energized, which facilitates the processing and manufacturing of the heating element 20 and contributes to ensuring the structural consistency of the heating element 20 and the entire aerosol generating device.

[0069] In some embodiments, the heating element 20 is provided with an external lead 22. A positive electrode connector (not shown) and a negative electrode connector (not shown) that are connected to the external lead 22 are arranged on the outer circumferential surface of the heating barrel 21 or on the heating film, and the heating barrel 21 or the heating film is electrically connected to a circuit board (not shown) in the device body via the external lead 22, allowing the heating of the heating element 20 to be controlled via the circuit board.

[0070] In one embodiment, a plurality of external conductors 22 are arranged, and a plurality of positive and negative electrode connection portions are arranged at intervals on the corresponding heating barrel 21 or heating film, and the current flow to the different external conductors 22 is controlled respectively, thereby realizing heating of each zone of the heating barrel 21 or heating film.

[0071] Furthermore, the number of positive electrode connectors may be two, three, four, or more. The multiple positive electrode connectors are arranged at intervals in the axial direction of the heating barrel 21, and the positive electrode connectors and negative electrode connectors are arranged alternately in the axial direction of the heating barrel 21. The number of external conductors 22 is equal to the sum of the number of positive electrode connectors and the number of negative electrode connectors, and an external conductor 22 is connected to each positive electrode connector and each negative electrode connector. By controlling the current flow between two adjacent positive electrode connectors and negative electrode connectors located at different axial positions, the region between the current-flowing positive electrode connector and negative electrode connector in the heating barrel 21 can be heated. Sequentially controlling the heating of different heating regions in the axial direction of the heating barrel 21 ensures continuity of aerosol generation and contributes to ensuring a pleasant mouthfeel during use at each stage of aerosol generation.

[0072] Of course, in other embodiments, there may be one positive and one negative connection, provided that the heating element 20 ensures that the aerosol product 40 and the airflow are heated.

[0073] The structure of the heater 20 in some embodiments of the present application is the same as the structure of the heater 20 in any of the embodiments of the aerosol generating device described above, and therefore a description thereof will be omitted here.

[0074] An embodiment of the present application further provides an aerosol generation system. Referring to Figures 1 to 4, the aerosol generation system includes the aerosol generating device according to any of the above embodiments and an aerosol product 40. The aerosol product 40 has a cylindrical rod-like structure, and the end of the aerosol product 40 containing the aerosol-generating substrate is located within the receiving cavity of the heating barrel 21. The outer surface of the aerosol product 40 comes into contact with a contact protrusion on the side wall 211 of the heating barrel 21, thereby heating the aerosol product 40 through direct contact with the contact protrusion. In addition, external cold air can enter the intake passage 31 formed by the side wall 211 of the heating barrel 21 and the aerosol product 40 from the aerosol outlet 101, and the heating barrel 21 can heat the air flow in the intake passage 31 through its side wall 211 to form a hot air flow, which enters the intake cavity 32 along the intake passage 31 and enters the aerosol product 40 from the end of the aerosol product 40, thereby heating the aerosol product 40.

[0075] See Figures 6-9 for some other embodiments of heating elements and corresponding aerosol generating devices.

[0076] In one embodiment, another aerosol-generating device is provided. Referring to Fig. 6, the aerosol-generating device includes a heater 22a (corresponding to the heater 20 in the embodiment corresponding to Figs. 1 to 5) according to any one of the following embodiments.

[0077] In one embodiment, the aerosol generating device may further include structures such as a bracket assembly 21a, a housing 30a, and a power supply assembly 40a. The bracket assembly 21a may be attached to the inside of the housing 30a, and the heating element 22a may be attached to the inside of the bracket assembly 21a. The power supply assembly 40a is used to supply power to the heating element 22a.

[0078] Here, the bracket assembly 21a may be understood as a collection of related parts for mounting the heating element 22a, such as the heat insulating tube 14, the sealing member 12a, the plug 15, and the clamping member 13, described in the embodiment corresponding to FIGS. 1 to 5 above. The housing 30a may be understood as the housing 10 described in the above embodiment. That is, the collection of structures such as the bracket assembly 21a, the housing 30a, and the power supply assembly 40a may be understood as the device main body described in the above embodiment. Those skilled in the art should understand that whether they are called the device main body or the bracket assembly 21a, the housing 30a, the power supply assembly 40a, etc., this is simply a difference in the way the related structures are expressed or classified, and the structure and function remain the same, so further description will be omitted here.

[0079] 7 to 9, the aerosol generation device includes a bracket assembly 21a and a heater 22a. When an aerosol product 40 is inserted into the bracket assembly 21a and the heater 22a, a first intake passage 211a is formed in the gap between the bracket assembly 21a and the aerosol product 40. The heater 22a is attached to the bracket assembly 21a. A storage cavity 221 for storing the aerosol product 40 is provided within the heater 22a, and an opening 2211 is provided at one end of the storage cavity 221, through which the aerosol product 40 is inserted into or withdrawn from the storage cavity 221. When the aerosol product 40 is inserted into the storage cavity 221, a second intake passage 2212 (corresponding to the combination of the intake passage 31 and the intake cavity 32 in the above-described embodiment) is formed in the gap between the cavity wall of the storage cavity 221 and the aerosol product 40. Therefore, when the aerosol product 40 is inserted into the accommodating cavity 221, outside air can flow into the heating body 22a through the gap between the aerosol product 40 and the cavity wall of the accommodating cavity 221, and the second intake passage 2212 is connected to the first intake passage 211a and the accommodating cavity 221. Therefore, as shown in FIG. 13, when a user inhales the aerosol product 40, the outside airflow can enter the inside of the aerosol product 40 placed in the accommodating cavity 221 via the first intake passage 211a and the second intake passage 2212.

[0080] 8 and 9, heating element 22a generates heat and heats the airflow passing through heating element 22a into a hot airflow. That is, the airflow in second air intake passage 2212 is heated by the hot airflow, and the hot airflow heats aerosol product 40. Heating element 22a has sidewall 222 (i.e., sidewall 211 in the above-described embodiment) surrounding opening 2211 and bottom wall 223 (i.e., bottom wall 212 in the above-described embodiment) facing opening 2211. Sidewall 222 may be annular, and bottom wall 223 may form storage cavity 221 by being enclosed together with sidewall 222.

[0081] The side wall 222 includes a first contact area 2221 close to the opening 2211 and a second contact area 2222 far from the opening 2211. That is, the first contact area 2221 and the second contact area 2222 are provided in order on the side wall 222 along the insertion direction of the aerosol product 40.

[0082] When the aerosol product 40 is mounted within the heating element 22a, the first contact area 2221 or the second contact area 2222 is spaced apart so as to not contact the outer circumferential surface (also called the side surface) of the aerosol product 40. That is, the first contact area 2221 or the second contact area 2222 does not contact the aerosol product 40 at all. When the first contact area 2221 is spaced apart so as to not contact the aerosol product 40, the second contact area 2222 is in contact with the aerosol product 40. When the second contact area 2222 is spaced apart so as to not contact the aerosol product 40, the first contact area 2221 is in contact with the aerosol product 40. The contact portion between the sidewall 222 of the heating element 22a and the aerosol product 40 can position the aerosol product 40 and is used to contact and transfer heat to the aerosol product 40.

[0083] Alternatively, when the aerosol product 40 is attached within the heating body 22a, the first contact area 2221 and the second contact area 2222 both contact the outer peripheral surface of the aerosol product 40, and the contact area between the first contact area 2221 and the outer peripheral surface of the aerosol product 40 is different from the contact area between the second contact area 2222 and the outer peripheral surface of the aerosol product 40.

[0084] In the heating body 22a of the present application, the first contact area 2221 or the second contact area 2222 of the side wall 222 of the heating body 22a is set to be completely spaced apart from the aerosol product 40, or the contact area between the first contact area 2221 and the outer peripheral surface of the aerosol product 40 is set to be different from the contact area between the second contact area 2222 and the outer peripheral surface of the aerosol product 40, thereby reducing the contact area between the heating body 22a and the outer peripheral surface of the aerosol product 40 as much as possible, thereby reducing the risk of the user inhaling impure gases.

[0085] When the first contact area 2221 is spaced apart so as not to be in contact with the outer surface of the aerosol product 40, or when the contact area of ​​the first contact area 2221 is smaller than the contact area of ​​the second contact area 2222, contact between the second contact area 2222 of the side wall 222 and the aerosol product 40 will generate a small amount of impure gas at the bottom side of the aerosol product 40, and the distance between the position where the impure gas is generated and the suction position at the top side of the aerosol product 40 will be longer, so that the impure gas can be more easily filtered by the grass substrate in the aerosol product 40, thereby reducing the situation where the user inhales the impure gas.

[0086] 8, in one embodiment, the first contact region 2221 has a first annular clearance 2221a for spacing the first contact region 2221 so that the first contact region 2221 is not in contact with the outer circumferential surface of the aerosol product 40. Here, the overall structure of the first contact region 2221 may be further radially away from the central axis of the heating element 22a than the second contact region 2222, and therefore the first annular clearance 2221a may be formed on the side of the first contact region 2221 that faces the central axis of the heating element 22a. Therefore, the minimum inner diameter of the first contact region 2221 is greater than the minimum inner diameter of the second contact region 2222.

[0087] 9, in one embodiment, the second contact region 2222 has a second annular clearance 2222a for spacing the second contact region 2221 so that the second contact region 2221 is not in contact with the outer circumferential surface of the aerosol product 40. Here, the overall structure of the second contact region 2222 may be further radially away from the central axis of the heating element 22a than the first contact region 2221, and therefore the second annular clearance 2222a may be formed on the side of the second contact region 2222 that faces the central axis of the heating element 22a. Therefore, the minimum inner diameter of the first contact region 2221 is smaller than the minimum inner diameter of the second contact region 2222.

[0088] By configuring first contact area 2221 as annular first clearance 2221a or second contact area 2222 as annular second clearance 2222a, aerosol product 40 has a cylindrical structure, and first annular clearance 2221a or second clearance 2222a can surround the outer periphery of aerosol product 40 with a gap therebetween. Therefore, a gap can be formed between first contact area 2221 or second contact area 2222 and aerosol product 40, which prevents first contact area 2221 or second contact area 2222 from contacting aerosol product 40 at all, thereby avoiding a situation in which impure gas is generated due to contact between first contact area 2221 or second contact area 2222 and aerosol product 40, and reducing the possibility of heating element 22a generating impure gas as a whole.

[0089] 9, the contact protrusion includes a first contact portion 2221b provided in the first contact region 2221. The first contact portion 2221b is used to contact the outer peripheral surface of the aerosol product 40, and the first contact portion 2221b can be used to position the aerosol product 40 and to contact and transfer heat to the aerosol product 40. To improve heat transfer efficiency, the heating element 22a may be made of a highly thermally conductive material such as an aluminum alloy, copper, or silicon carbide.

[0090] 9, in one embodiment, first contact portion 2221b is a plurality of first protrusions 2221c (corresponding to contact ribs 2112 in the previous embodiment) provided on first contact region 2221 of sidewall 222. The plurality of first protrusions 2221c are spaced apart along the circumferential direction of containing cavity 221, preferably evenly spaced along the circumferential direction. One end of each of first protrusions 2221c, located near the central axis of heater 22a, is used to contact the outer circumferential surface of aerosol product 40. Preferably, the contact surface between first protrusions 2221c and the outer circumferential surface of aerosol product 40 is an arc-shaped surface. The arc-shaped surface can better adhere to the outer circumferential surface of cylindrical aerosol product 40, resulting in surface contact between first protrusions 2221c and aerosol product 40. Surface contact, compared to point contact, can prevent excessive heat from being generated locally on the outer circumferential surface of aerosol product 40.

[0091] In one embodiment, as shown in FIG. 8, the contact protrusion includes a second contact portion 2222b provided in the second contact area 2222, and the second contact portion 2222b is used to contact the outer peripheral surface of the aerosol product 40, and the second contact portion 2222b can be used to position the aerosol product 40 and to contact and transfer heat to the aerosol product 40.

[0092] In one embodiment, second contact portion 2222b is a plurality of second protrusions 2222c (corresponding to contact rib 2112 in the previous embodiment) provided on second contact region 2222 of sidewall 222. Second protrusions 2222c are spaced apart along the circumferential direction of containing cavity 221, preferably uniformly distributed along the circumferential direction. One end of second protrusions 2222c, closer to the central axis of heater 22a, is used to contact the outer circumferential surface of aerosol product 40. Preferably, the contact surface between second protrusions 2222c and the outer circumferential surface of aerosol product 40 is an arc-shaped surface. The arc-shaped surface can better adhere to the outer circumferential surface of cylindrical aerosol product 40, thereby providing surface contact between second protrusions 2222c and aerosol product 40. Surface contact, compared to point contact, can prevent excessive heat from being generated locally on the outer circumferential surface of aerosol product 40.

[0093] Here, the first protrusion 2221c and / or the second protrusion 2222c may be an elongated structure, where an elongated structure refers to a structure in which the length extension dimension of the structure is much greater than the width and height dimensions, and the elongated structure extends from the side closer to the opening 2211 to the side farther from the opening 2211.

[0094] In one embodiment, when the first contact area 2221 and the second contact area 2222 both contact the outer peripheral surface of the aerosol product 40, the contact area between the first contact area 2221 and the outer peripheral surface of the aerosol product 40 is larger than the contact area between the second contact area 2222 and the outer peripheral surface of the aerosol product 40, and the contact area between each second protrusion 2222c and the aerosol product 40 is smaller than the contact area between each first protrusion 2221c and the aerosol product 40, or the total contact area between all the second protrusions 2222c and the aerosol product 40 may be smaller than the total contact area between all the first protrusions 2221c and the aerosol product 40.

[0095] Alternatively, when the first contact area 2221 and the second contact area 2222 both contact the outer peripheral surface of the aerosol product 40, the contact area between the first contact area 2221 and the outer peripheral surface of the aerosol product 40 may be smaller than the contact area between the second contact area 2222 and the outer peripheral surface of the aerosol product 40, and the contact area between each second protrusion 2222c and the aerosol product 40 may be larger than the contact area between each first protrusion 2221c and the aerosol product 40, or the total contact area between all the second protrusions 2222c and the aerosol product 40 may be larger than the total contact area between all the first protrusions 2221c and the aerosol product 40.

[0096] 7 to 9, the second intake passage 2212 includes a second passage 2212a and a third passage 2212b, and the second passage 2212a is formed by the cooperation of the first contact area 2221 and the aerosol product 40. The third passage 2212b is formed by the cooperation of the second contact area 2222 and the aerosol product 40. The combination of the second passage 2212a and the third passage 2212b corresponds to the intake passage 31 in the above-described embodiment. When the first clearance 2221a is provided in the first contact area 2221, the second passage 2212a is formed by the cooperation of the first clearance 2221a and the aerosol product 40. When the first contact area 2221b is provided in the first contact area 2221, the second passage 2212a is formed by the cooperation of the first contact area 2221b and the aerosol product 40. For example, second passage 2212a may be formed by cooperation between the space between adjacent first protrusions 2221c and aerosol product 40. When second clearance 2222a is provided in second contact region 2222, third passage 2212b is formed by cooperation between second clearance 2222a and aerosol product 40. When second contact portion 2222b is provided in second contact region 2222, third passage 2212b is formed by cooperation between second contact portion 2222b and aerosol product 40. For example, third passage 2212b may be formed by cooperation between the space between adjacent second protrusions 2222c and aerosol product 40.

[0097] The airflow can pass through the first intake passage 211a and the second passage 2212a downwardly into the third passage 2212b, where it is preheated to become a hot airflow, and the hot airflow can enter the third passage 2212b and be further heated.

[0098] In one embodiment, as shown in FIGS. 8 and 9, the second contact region 2222 of the bottom wall 223 and / or the side wall 222 is provided with a support protrusion 224 (also referred to as a support portion), which contacts the bottom surface of the aerosol product 40 to support the bottom surface of the aerosol product 40. As shown in FIGS. 7 to 9, the second intake passage 2212 further includes an intake cavity 2212c. After the aerosol product 40 is inserted into the containing chamber 221 and abuts against the support protrusion 224, an intake cavity 2212c (also referred to as a first passage) is formed between the bottom wall 223 and the aerosol product 40. After entering the heating element 22a, the outside air can enter the aerosol product 40 via the second passage 2212a, the third passage 2212b, and the intake cavity 2212c. This arrangement of the intake passages not only allows the hot air flow to be heated in the second intake passage 2212, but also allows the hot air flow to preheat the aerosol product 40, thereby improving energy utilization efficiency.

[0099] 10 , the heating element 22a includes a heating barrel 225 (also referred to as a base) and a heat-generating element 226. The heating barrel 225 includes a bottom wall 223 and a side wall 222. The heat-generating element 226 may be disposed on the bottom wall 223 of the heating barrel 225 to heat the airflow in the intake cavity 2212c. The heating element is disposed on the bottom wall 223 of the heating barrel 225 to ensure that the heated airflow meets the heating temperature requirements before entering the aerosol product 40, allowing the hot airflow to sufficiently heat the aerosol product 40. The heat-generating element 226 may be in the form of, for example, a heating film, a heating net, a heating sheet, a heating circuit, a heating wire, or the like, and the present application does not limit the form of the heat-generating element 226.

[0100] For some further embodiments of the heating element, see Figures 11-12. In one embodiment, referring to Figures 11 and 12, the heating element 100 comprises a heating barrel 110 (also called a heat-conducting base) and a heat-generating element 120 (also called a heat-generating assembly) disposed in the heating barrel 110.

[0101] 11 and 12, the barrel 110 may be understood as a structural member capable of heating a heating segment of an aerosol product (also referred to as an aerosol-generating substrate), where the heating segment of the aerosol product refers to the portion of the aerosol substrate that includes an aerosol-generating base material and is used to generate an aerosol. The barrel 110 has a receiving cavity 111 (also referred to as a heating cavity) and an opening 112 (also referred to as an attachment port). The receiving cavity 111 is used to receive the aerosol product, and the opening 112 is used to insert the aerosol product into the receiving cavity 111.

[0102] In some embodiments, the material of the heating barrel 110 may be aluminum alloy, copper, aluminum nitride, or other high thermal conductivity materials to better transfer the heat generated by the heat generating element 120 to the aerosol product. The specifications of the containing cavity 111 may be set to fit the heating segment of the aerosol product, and the opening 112 may be configured to allow the heating segment of the aerosol product to be inserted into the containing cavity 111. In other embodiments, the containing cavity 111 may be configured to allow other portions of the aerosol product to be inserted therein.

[0103] To address the issue of excessively high temperatures of the aerosol generated by heating the aerosol product, referring to FIGS. 11 and 12, the heating barrel 110 is provided with a first heating region and a second heating region along the insertion direction of the aerosol product. The heating member 120 includes a first heating member 121a and a second heating member 122, with the first heating member 121a disposed in the first heating region of the heating barrel 110 and the second heating member 122 disposed in the second heating region of the heating barrel 110. That is, the first heating member 121a heats the first heating region, and the second heating member 122 heats the second heating region, forming a heating structure for each region. The heating barrel 110 also has an intake passage 113 through which air flows into the aerosol product after passing through the first and second heating regions in sequence. Illustratively, the intake passage 113 includes at least one air flow groove 1131, which is provided in the cavity wall of the accommodating cavity 111 and communicates with the opening 112, and is used for the air flow to enter the aerosol product after passing through the first heating area and the second heating area in sequence.

[0104] In this way, multiple options for generating a hot airflow through heating are provided, making it convenient to apply them according to usage needs. For example, in the preheating stage of an aerosol product, the first heating element 121a is primarily used for heating, which facilitates rapid aerosol generation. After a certain period of heating, the second heating element 122 is primarily used for heating, and the aerosol generated in the aerosol product portion corresponding to the second heating element 122 must pass through the aerosol product portion corresponding to the first heating element 121a before being discharged. This reduces the aerosol discharge temperature, alleviating the problem of the generated aerosol being too hot and helping to prevent users from being burned by the aerosol or the mouthpiece when inhaling the aerosol. It also helps to thoroughly bake the aerosol-generating substrate in the aerosol product, improving the aerosol generation effect.

[0105] For example, referring to Figures 11 and 12, the first heating area is provided on the side closer to the opening 112 of the heating barrel 110, and the second heating area is provided on the side farther from the opening 112 of the heating barrel 110, with the second heating area and the first heating area being spaced apart.

[0106] A plurality of airflow grooves 1131 are provided in the cavity wall of the receiving cavity 111 at intervals around the circumferential direction of the receiving cavity 111, and each airflow groove 1131 is provided along the axial direction of the receiving cavity 111, with a portion of each located in the first heating region and a portion located in the second heating region, and the airflow grooves 1131 further communicate with the openings 112. That is, the openings 112 also function as airflow inlets for the airflow grooves 1131, and the airflow can pass through the first heating region and the second heating region in sequence as it flows after entering the airflow grooves 1131.

[0107] It should be understood that the portions of the airflow grooves 1131 located on the cavity side walls of the accommodating cavity 111 correspond to recesses in the side walls of the heating barrel 110, and the portions between each recess correspond to contact protrusions in the side walls of the heating barrel 110.

[0108] In other embodiments, the airflow groove 1131 may be configured in other ways. For example, the airflow groove 1131 may be configured in a spiral shape passing through the first heating zone and the second heating zone, as long as it is configured in a way that satisfies usage and design requirements. Regarding the airflow inlet of the airflow groove 1131, the heating barrel 110 may be provided with an air intake port communicating with the airflow groove 1131 as the airflow inlet, and the air intake port may be provided on the first heating zone or on the side of the first heating zone away from the second heating zone.

[0109] 12, in order to allow the hot air flow in the air flow groove 1131 to flow into the aerosol product, in one embodiment, a support protrusion 114 (also called a support projection) is provided at one end of the containing cavity 111 remote from the opening 112, and the support protrusion 114 is used to support the end surface of the aerosol product, and an intake cavity 1132 (also called an intake gap) can be formed between the cavity wall remote from the opening 112 of the containing cavity 111 and the aerosol product. The intake cavity 1132 is in communication with the air flow groove 1131, and the heated hot air flow in the air flow groove 1131 can pass through the intake cavity 1132 and enter the aerosol product.

[0110] 12, for example, the support protrusions 114 are all provided at the connection points between the peripheral wall and the end wall of the accommodating cavity 111, and therefore the support protrusions 114 are provided on the peripheral wall of the accommodating cavity 111, and there are a plurality of support protrusions 114, each corresponding to the cavity wall of the accommodating cavity 111 between the corresponding airflow grooves 1131, and it may be understood that each support protrusion 114 collectively supports the aerosol product in the accommodating cavity 111 in the circumferential direction and contributes to the stable placement of the aerosol product in the accommodating cavity 111. Here, the peripheral wall of the accommodating cavity 111 corresponds to the inner surface of the side wall 211 in the embodiment corresponding to FIGS. 1 to 5, and the end wall of the accommodating cavity 111 corresponds to the inner surface of the bottom wall 212 in the embodiment corresponding to FIGS. 1 to 5.

[0111] In another example, the number, shape, and position of the support protrusions 114 may all be flexibly adjusted according to usage needs, so long as the aerosol product can be positioned, thereby forming an intake cavity 1132 between the end surface of the aerosol substrate and the cavity wall away from the opening 112 of the storage cavity 111.

[0112] In one embodiment, the first heat generating member 121a and the second heat generating member 122 are both resistive heat generating members, and the first heat generating member 121a and the second heat generating member 122 are connected in parallel. By using resistive heat generating members, it is possible to adjust the heat generating power by controlling the input current. Furthermore, by connecting the first heat generating member 121a and the second heat generating member 122 in parallel, the first heat generating member 121a and the second heat generating member 122 can operate separately or simultaneously, which contributes to improving heating flexibility.

[0113] 11, in one embodiment, the first heat generating element 121a and the second heat generating element 122 are resistance heating circuits that have high energy density, are easy to heat, and are easy to integrate. Illustratively, the first heat generating element 121a and the second heat generating element 122 are both arranged in an arc shape on the outer peripheral wall of the heating barrel 110. In another example, the first heat generating element 121a and the second heat generating element 122 may be arranged inside the heating barrel 110 or on the cavity wall of the receiving cavity 111.

[0114] When a resistive heating circuit is employed, in some embodiments, a resistive heating circuit manufactured by a thick-film printing method may be employed. Resistive heating circuits manufactured by a thick-film printing method are easily adapted to the surface shape of the heating barrel 110, have high temperature resistance, and are highly compatible with the heating needs of the heating element 100. For example, the first and second heating elements 121a and 122 may be resistive heating circuits printed by metal thick film printing, and the printed substrates of the first and second heating elements 121a and 122 may be made of metal, but the printed substrates of the first and second heating elements 121a and 122 must have an insulating layer on their surfaces. That is, the heating barrel 110 may be made of metal with an insulating layer on its surface. The first and second heating elements 121a and 122 may be resistive heating circuits printed by ceramic thick film printing, and the printed substrates of the first and second heating elements 121a and 122 may be made of ceramic.

[0115] In other embodiments, the first heat generating element 121a and the second heat generating element 122 may be an electric heating wire, a resistance wire, an electric heating tube or other resistance-type heat generating elements.

[0116] 11 , in one embodiment, the heating barrel 110 includes a first electrical connection member 123, a second electrical connection member 124, and a third electrical connection member 125. The first heat-generating member 121a and the second heat-generating member 122 each have two electrical connection terminals. The two electrical connection terminals of the first heat-generating member 121a are electrically connected to the first electrical connection member 123 and the third electrical connection member 125, respectively. The two electrical connection terminals of the second heat-generating member 122 are electrically connected to the second electrical connection member 124 and the third electrical connection member 125, respectively. The first electrical connection member 123 and the second electrical connection member 124 are used to electrically connect to the same electrode of an external power supply, and the third electrical connection member 125 is used to electrically connect to another electrode of the external power supply. The first heat-generating member 121a and the second heat-generating member 122 share the third electrical connection member 125, achieving parallel connection and contributing to material savings and cost reduction.

[0117] For example, referring to FIG. 11, the first electrical connection member 123, the second electrical connection member 124 and the third electrical connection member 125 are all bonding pads and are provided in a portion of the heating barrel 110 located between the first heat-generating member 121a and the second heat-generating member 122. Each bonding pad is connected to the corresponding first heat-generating member 121a and second heat-generating member 122 by a conductor, which may be silver, copper or other conductive material.

[0118] For some further embodiments of the heating element, see Figures 13 to 18. 13 to 18, a heating body (also called a heating structure) is provided, which includes a heating barrel 10b (also called a heat-conducting barrel) and a heat-generating member 20a (also called a heating member).

[0119] 13 to 16, the internal cavity of the heating barrel 10b (corresponding to the storage cavity in the embodiment corresponding to FIGS. 1 to 5 described above) is used to store the aerosol product (also called the aerosol-generating substrate). The inner wall of the heating barrel 10b is provided with contact protrusions 141a (also called first protrusions). An internal recess (corresponding to the recess in the embodiment corresponding to FIGS. 1 to 5 described above) is formed between adjacent contact protrusions 141a. The bottom wall 11a (also called the barrel bottom) of the heating barrel 10b is provided with support protrusions 142 (also called second protrusions). The contact protrusions 141a are used to form an intake passage (also called a first airflow passage) between the side wall 12 of the heating barrel 10b and the aerosol product. The support protrusions 142 are used to form an intake cavity (also called a second airflow passage) between the bottom wall 11a and the aerosol product. The intake passage is connected to the outside and the intake cavity.

[0120] A first region 101b and a second region 102 are provided on a side wall 12 (also called a cylinder) of the heating cylinder 10b along the axial direction of the heating cylinder 10b, with the first region 101b located on the side farther from the bottom wall 11a and the second region 102 located on the side closer to the bottom wall 11a. The heat-generating member 20a is fixed to the second region 102 of the side wall 12 by, for example, using a thick film printing method.

[0121] Here, the thick film printing may be metal thick film printing or ceramic thick film printing. Heat generating element 20a generates heat after being energized and is used to transfer the generated heat to heating barrel 10b. After acquiring heat, heating barrel 10b can directly heat the sidewall of aerosol product 40, or it can indirectly heat aerosol product 40 by heating the airflow passing through the intake passage, causing the heated airflow to flow into aerosol product 40 through the intake cavity.

[0122] When the heating element of the above embodiment is used, external airflow passes through the intake passage and the intake cavity, and then through the bottom of the aerosol product 40 to enter the aerosol product 40. The airflow passage (collectively referred to as the intake passage and the intake cavity) formed by the heating element is an airflow passage formed inside the heating barrel 10b. Forming an airflow passage inside the heating barrel 10b can shorten or simplify the airflow path, contributing to reduced power consumption and improved energy utilization of the heating element. The sidewall 12 of the heating barrel 10b is provided with a first region 101b and a second region 102, and the heating element 20a is fixed to the sidewall 12 of the second region 102. That is, to solve the problem of mouth burns, the heating element 20a provides heat to a localized location within the heating barrel 10b and further controls the heat provided to the aerosol product 40.

[0123] Here, first region 101b is located away from bottom wall 11a, and second region 102 is located closer to bottom wall 11a. In this way, heat-generating member 20a is located relatively close to the bottom of aerosol product 40. When the bottom segment of aerosol product 40 is heated, the water vapor in aerosol product 40 continues to flow toward the top side of aerosol product 40, which reduces the temperature to a certain extent, thereby achieving a cooling effect and alleviating the problem of mouth burns.

[0124] After the bottom segment of the aerosol product 40 is heated to release the aerosol, the segments near the top of the aerosol product 40 are not baked or are baked insufficiently, so that the bottom segment of the aerosol product 40 can filter the released aerosol by heating, ultimately reducing the amount of impurity gases and particulate matter contained in the aerosol released from the top of the aerosol product 40, improving the mouthfeel of inhaling the aerosol.

[0125] Due to the design of the heater, when the aerosol product 40 is heated, it is heated little by little from the bottom of the aerosol product 40 upward, so that the aerosol product 40 continuously releases aerosol, which heats the aerosol product 40 as a whole, preventing the aerosol from terminating after just a few inhalations. The heat-generating element 20a is located in the second region 102 of the side wall 12 of the heating barrel 10b, near the bottom wall 11a. On the one hand, the area of ​​the heat-generating element 20a is reduced, and on the other hand, the heat-generating element 20a is relatively far from the nozzle 13a, so that the heat transferred from the heating barrel 10b to the outside is reduced, thereby reducing heat loss.

[0126] The bottom of aerosol product 40 refers to the end face of aerosol product 40 that is closest to bottom wall 11a, and the top of aerosol product 40 refers to the end face that is located outside the heating element and away from bottom wall 11a. A user inhales aerosol through the top of aerosol product 40. When aerosol product 40 is heated by the heating element, aerosol released from the bottom segment of aerosol product 40 continues to flow toward the top as the user inhales.

[0127] 16, the first region 101b and the second region 102 provided on the side wall 12 of the heated barrel 10b are regions with the same or similar areas. Specifically, for example, the first region 101b is a region formed in approximately the upper half of the side wall 12, and the second region 102 is a region formed in approximately the lower half of the side wall 12. The outline of the side wall 12 of the heated barrel 10b after it is unfolded is rectangular, and after the side wall 12 is unfolded, the first region 101b and the second region 102 above it are also rectangular. The lengths of the first region 101b and the second region 102 are both approximately the length of the side wall 12 of the heated barrel 10b in the unfolded state, and the sum of the widths of the first region 101b and the second region 102 is approximately equal to the width of the side wall 12 of the heated barrel 10b. Here, the lengths refer to horizontal dimensions, and the widths refer to vertical dimensions. In other embodiments, the ratio between the first region 101b and the second region 102 on the side wall 12 of the heating barrel 10b may be other values. For example, the first region 101b occupies ¾ of the circumferential area of ​​the side wall 12 of the heating barrel 10b, and the second region 102 occupies ¼ of the circumferential area of ​​the side wall 12 of the heating barrel 10b. The specific areas or shapes of the first region 101b and the second region 102 on the side wall 12 of the heating barrel 10b are not limited and may be flexibly set according to actual conditions.

[0128] Specifically, in the embodiment of the present application, the contact protrusion 141a is an elongated protrusion on the inner wall of the heating barrel 10b, and the support protrusion 142 may be a block, elongated, or other protrusion-type structure. The contact protrusion 141a extends along the axial direction of the heating barrel 10b to the support protrusion 142, and the contact protrusion 141a and the support protrusion 142 are integrally connected to form an L-shaped support strip 14a. A plurality of L-shaped support strips 14a are arranged in an array around the axis of the heating barrel 10b. An airflow groove 15a is formed between adjacent L-shaped support strips 14a, and the plurality of L-shaped support strips 14a form a corresponding plurality of airflow grooves 15a distributed in an array around the axis of the heating barrel 10b.

[0129] When a user inhales aerosol product 40, external air flows along airflow groove 15a between the inner wall of heating barrel 10b and aerosol product 40, into airflow groove 15a between bottom wall 11a and the bottom of aerosol product 40, and then flows from the bottom of aerosol product 40 to the top of aerosol product 40. In other embodiments, contact protrusions 141a and support protrusions 142 are two relatively independent parts, the number of contact protrusions 141a and the number of support protrusions 142 may be the same or different, the shape of contact protrusions 141a and the shape of support protrusions 142 may be the same or different, and contact protrusions 141a and support protrusions 142 are not specifically limited as long as they can perform their respective roles.

[0130] In some embodiments, the heat generating element 20a is configured as a single piece, forming at least one layer of heating ring along the circumferential direction of the side wall 12. The heat generating element 20a may be in the form of a sheet, mesh, or thread, and a specific layout of the heat generating element 20a will be described using a sheet-shaped resistance heating circuit as an example. The heat generating element 20a may be fixed to the circumferential surface of the side wall 12 in a spiral or curved distribution. The heating ring formed by the heat generating element 20a may be one layer, two layers, three layers, etc., and the specific configuration may be selected according to actual needs.

[0131] Specifically, the heat generating element 20a forms a single-layer heating ring along the circumferential direction of the sidewall 12, and connection electrodes 21b for electrical connection to a power source are fixed to both ends of the heat generating element 20a along the circumferential direction of the sidewall 12. In this case, one of the two connection electrodes 21b of the heat generating element 20a can be used to electrically connect to the positive terminal of the power source via a lead wire, and the other of the two connection electrodes 21b of the heat generating element 20a can be used to electrically connect to the negative terminal of the power source via a lead wire. The shape of the sidewall 12 of the heating barrel 10b matches the outer shape of the aerosol product 40. For example, if the aerosol product 40 is cylindrical, the corresponding heating barrel 10b will also be cylindrical. The heating ring formed on the circumferential surface of the sidewall 12 of the heat generating element 20a approximates a complete ring-shaped structure, but because both ends of the heat generating element 20a must be electrically connected to the connection electrodes 21b, the heat generating element 20a cannot form a complete ring-shaped structure. When the heat generating element 20a forms a single layer of heating ring along the circumferential direction of the side wall 12, the structure of the heat generating element 20a is simple and easy to process. In this case, the heat generating element 20a has a relatively small heating area, making it less likely to cause mouth burns.

[0132] More specifically, connecting member 22a is provided between heat generating member 20a and connecting electrode 21b, and connecting member 22a is provided in a one-to-one correspondence with connecting electrode 21b, and connecting member 22a is connected to heat generating member 20a and connecting electrode 21b along the axial direction of heating barrel 10b. Without connecting member 22a, connecting electrode 21b would be directly connected to the end of heat generating member 20a. For example, if connecting electrode 21b and the end of heat generating member 20a are stacked so that they overlap, the temperature at the overlapping point between heat generating member 20a and connecting electrode 21b will decrease, making it impossible to provide a uniform heating effect at different positions on the circumferential surface of aerosol product 40 at the same axial position. Furthermore, if the connecting electrode 21b were directly connected to the edge of the heat-generating element 20a along the axial direction of the heating barrel 10b, and the current were to travel the shortest path, current would not flow to some of the ends of the heat-generating element 20a, preventing further heating and resulting in a uniform heating effect across different axial positions on the circumferential surface of the aerosol product 40. If a connecting element 22a is provided between the heat-generating element 20a and the connecting electrode 21b, the connecting element 22a would electrically connect the edge of the heat-generating element 20a and the connecting electrode 21b along the axial direction of the heating barrel 10b. The connecting element 22a functions as a lead wire, allowing current to flow as far as possible throughout the entire heat-generating element 20a and ensuring the heating effect of the heater. Specifically, the connecting element 22a is a silver paste layer. This connecting element 22a has low resistance, generates little heat, and minimizes its impact on the temperature field within the heating barrel 10b.

[0133] More preferably, one of the two connecting members 22a is used to pass current from the end edge of the heat-generating member 20a to the heat-generating member 20a via the connection electrode 21b, and the other of the two connecting members 22a is used to pass current in the heat-generating member 20a from the end edge to the connection electrode 21b. For example, as shown in Fig. 16, the heat-generating member 20a, the connection electrode 21b, and the connection member 22a are all rectangular sheets. Taking the area surrounded by the dashed line at point A in Fig. 16 as an example, in this case, the left edges of the heat-generating member 20a, the connection electrode 21b, and the connection member 22a are on the same plane, and the connection member 22a allows the current in the connection electrode 21b to flow into the heat-generating member 20a from the left edge of the heat-generating member 20a, or allows the current in the heat-generating member 20a to flow from the left edge of the heat-generating member 20a to the connection electrode 21b. In this way, current can flow throughout the entire heat-generating element 20a, allowing the entire heat-generating element 20a to generate heat uniformly, and providing a uniform heating effect at different positions on the circumferential surface of the aerosol product 40 at the same axial position. The specific shapes and positional layouts of the heat-generating element 20a, the connecting electrode 21b, and the connecting element 22a are merely examples for better understanding the technical solutions and technical effects of the present application, and should not be understood as limiting the present application.

[0134] In some embodiments, the heat generating element 20a is configured as a plurality of elements, and the plurality of elements 20a are connected in parallel. When the plurality of elements 20a are connected in parallel, the plurality of elements 20a can be easily controlled flexibly, and the heating element can provide more heating modes, thereby providing a better heating effect according to the heating needs of the aerosol product 40.

[0135] Specifically, the plurality of heat generating elements 20a are arranged along the axial direction of the heating barrel 10b, and the heat generating elements 20a form at least one layer of heating ring along the circumferential direction of the side wall 12. When the plurality of heat generating elements 20a are arranged along the axial direction of the heating barrel 10b and the heat generating elements 20a are in the form of a heating ring on the side wall 12, firstly, it can ensure that a uniform heating effect is provided at different positions on the circumferential surface of the aerosol product 40 at the same axial position, and secondly, it can heat the aerosol product 40 more accurately segment by segment along the axial direction of the heating barrel 10b.

[0136] More specifically, two heat-generating members 20a are provided. For ease of explanation, one of the two heat-generating members 20a is referred to as the first heat-generating member 201, and the other of the two heat-generating members 20a is referred to as the second heat-generating member 202. The number of rings of the heating rings formed by the first heat-generating member 201 and the second heat-generating member 202 may be the same or different. For example, as shown in FIG. 17 , the first heat-generating member 201 is bent around the circumferential surface of the side wall 12 to form two layers of heating rings, and the second heat-generating member 202 is bent around the circumferential surface of the side wall 12 to form one layer of heating rings. A connection electrode 21b is disposed at each of the distant ends of the first heat-generating member 201 and the second heat-generating member 202, and a common electrode 23 is disposed between the close ends of the first heat-generating member 201 and the second heat-generating member 202. In this case, the connection electrode 21b is used to electrically connect to one of the positive and negative electrodes of the power supply, and the common electrode 23 is used to electrically connect to the other of the positive and negative electrodes of the power supply.

[0137] 18 , more preferably, in one embodiment, the sidewall 12 in the second region 102 is provided with a mounting groove 16 in which the heat-generating element 20a is fixed. When the heat-generating element 20a has a heating ring structure, the mounting groove 16 is an annular mounting groove. By providing the mounting groove 16 in the second region 102 of the sidewall 12, on the one hand, the thickness of the sidewall 12 can be reduced at that location, and the amount of heat generated by the heat-generating element 20a can be more concentrated in the second region 102 of the sidewall 12, thereby enabling intensive heating of the bottom segment of the aerosol product 40. On the other hand, the mounting groove 16 clarifies the mounting position of the heat-generating element 20a, which helps ensure the consistency of the products produced in one batch of heating elements.

[0138] To ensure the heat transfer effect of the heating barrel 10b, the thermal conductivity of the heating barrel 10b is 10 W / (m·k) or more. If the heating barrel 10b has high requirements for heat transfer speed, materials with higher thermal conductivity, such as aluminum alloy, copper, and aluminum nitride, can be selected.

[0139] The heating element in the above embodiment designed in this application has an airflow passage inside the heating barrel 10b, which allows the airflow path within the heating element to be relatively short, thereby reducing power consumption and improving the energy utilization rate of the heating element. Furthermore, the airflow passage inside the heating barrel 10b makes cleaning the heating element easy; simply remove the aerosol product 40 and clean the inside of the heating barrel 10b. The heat-generating element 20a is fixed to the second region 102 of the side wall 12 near the bottom wall 11a. Because the heat-generating element 20a is located at the bottom of the heating barrel 10b and far from the opening 13a of the heating barrel 10b, the heat transfer from the heating barrel 10b to the outside is reduced, thereby reducing heat loss. The lower portion of the heating barrel 10b corresponds to the lower portion of the aerosol product 40 (i.e., the portion near the bottom of the aerosol product 40), ensuring that the aerosol product 40 is baked and the aerosol is released, while avoiding the mouth burn problem caused by an excessively large heating area.

[0140] For some further embodiments of the aerosol generating device, see Figures 19-21. 19, an aerosol generation device 100a is provided in one embodiment. The aerosol generation device 100a includes an atomization device 101a, a housing 102a (also referred to as a casing, which corresponds to the housing 10 in the embodiment corresponding to FIGS. 1 to 5 described above), and a power supply assembly 103. Both the atomization device 101a and the power supply assembly 103 are disposed within the housing 102a. The power supply assembly 103 is used to supply power to the atomization device 101a. The aerosol product 40 is disposed within the atomization device 101a. After the atomization device 101a is energized, it heats the aerosol product 40 to generate aerosol.

[0141] 19 and 20, the atomization device 101a includes a mounting base 10a, a heating element 20 disposed within the mounting base 10a, and a reflective heat insulating layer 30 disposed between the heating element 20 and the mounting base 10a and surrounding the outer surface of the heating element 20. Here, a power supply assembly 103 supplies power to the heating element 20.

[0142] According to the above technical solution, a reflective heat insulating layer 30 is provided between the mounting base 10a and the heating element 20, and the reflective heat insulating layer 30 surrounds the outer surface of the heating element 20. After the heating element 20 is energized and generates heat, the reflective heat insulating layer 30 reflects the thermal radiation of the heating element 20 and prevents the heat generated by the heating element 20 from being conducted to the mounting base 10a. The reflective heat insulating layer 30 does not store heat itself, has a high thermal insulation effect, is low cost, and occupies a small space. Therefore, the atomization device 101a provided in the embodiment of the present application has good thermal insulation effect, is low cost, and occupies a small space.

[0143] Referring to FIG. 21, the mounting base 10a includes a sleeve 11b and a base 12b (corresponding to the plug 15 in the embodiment corresponding to FIGS. 1 to 5). The base 12b is hermetically connected to one end of the sleeve 11b, and together with the sleeve 11b, forms a storage space 13b. The other end of the sleeve 11b is provided with an inlet / outlet 14b communicating with the storage space 13b, and the heating element 20 is disposed within the storage space 13b. The sleeve 11b is fitted onto the outer periphery of the heating element 20, and the opening 212b of the heating element 20 is provided back-to-back with the base 12b. That is, the opening 212b of the heating element 20 faces the inlet / outlet 14b and corresponds to the inlet / outlet 14b. The aerosol product 40 can be inserted into the storage cavity 211b by passing through the inlet / outlet 14b and the opening 212b in that order.

[0144] Referring to FIG. 21, the atomization device 101a further includes a connection assembly 40b. The heating element 20 is suspended within the mounting base 10a, and the connection assembly 40b is connected between the mounting base 10a and the end of the heating element 20, where the opening 212b is provided, so that a gap 50 exists between the heating element 20 and the mounting base 10a. Specifically, the connection assembly 40b is connected between the inner wall of the sleeve 11b and the end of the heating barrel 21, where the opening 212b is provided. This arrangement reduces the contact area between the heating barrel 21 and the mounting base 10a, thereby reducing thermal energy loss. Furthermore, since the gap 50 exists between the heating barrel 21 and the mounting base 10a and gas is located within the gap 50, the gas's poor thermal conductivity further reduces thermal energy loss.

[0145] In one embodiment, the width of the gap 50 is 0.3 mm or more. In specific implementation, the width of the gap 50 may be set to 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc.

[0146] 21, the sleeve 11b includes a first cylindrical body 111a (corresponding to the sealing member 12a in the embodiment corresponding to FIGS. 1 to 5 described above) and a second cylindrical body 112a (corresponding to the heat insulating cylinder 14 in the embodiment corresponding to FIGS. 1 to 5 described above) that are coaxially arranged, and the first cylindrical body 111a and the base 12b are connected to opposite ends of the second cylindrical body 112a, respectively. The connection assembly 40b includes a first connecting member 41 (corresponding to the portion of the sealing member 12a that extends into the heat insulating cylinder 14 in the embodiment corresponding to FIGS. 1 to 5 described above) and a second connecting member 42 (corresponding to the support arm 141 in the embodiment corresponding to FIGS. 1 to 5 described above). The first connecting member 41 is connected to one end or the inside of the first cylindrical body 111a and extends into the second cylindrical body 112a, the second connecting member 42 is connected to one end or the inside of the second cylindrical body 112a, and the heating element 20 is connected between the first connecting member 41 and the second connecting member 42 and suspended within the second cylindrical body 112a. In this way, a suspended arrangement of the heating element 20 is realized, which is advantageous for reducing thermal energy loss. In specific implementation, one end of the heating cylinder 21, where the opening 212b is provided, is connected between the first connecting member 41 and the second connecting member 42.

[0147] In one embodiment, referring to FIGS. 21 and 22, the reflective heat insulating layer 30 is applied to the inner surface of the mounting base 10a. In a specific implementation, the reflective heat insulating layer 30 is applied to the inside of the second cylinder 112a and the side of the base 12b facing the receiving space 13b. Of course, in a specific application, as an alternative embodiment, the reflective heat insulating layer 30 may be applied to the outer surface of the heating element 20. In this embodiment, the heat generating element is interposed between the heating element 20 and the reflective heat insulating layer. In another alternative embodiment, the reflective heat insulating layer 30 may be applied to both the inner surface of the mounting base 10a and the outer surface of the heating element 20, or there may be no gap 50 between the heating element 20 and the mounting base 10a, and the reflective heat insulating layer 30 may be interposed between the heating element 20 and the mounting base 10a.

[0148] In one embodiment, the thickness of the reflective heat insulating layer 30 is 0.2 mm or less, which saves materials and reduces costs. In specific implementations, the thickness of the reflective heat insulating layer 30 may be 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, etc.

[0149] In one embodiment, the reflective thermal insulation layer 30 is a reflective thermal insulation film made of a low emissivity material so as to improve the thermal radiation reflection performance of the reflective thermal insulation layer 34. Here, the reflective thermal insulation layer 30 includes any one of an aluminum layer, a silver layer, a stainless steel layer, and a ceramic layer.

[0150] According to the aerosol generating device of an embodiment of the present application, a reflective heat insulating layer 30 is provided between the heating body 20 and the mounting base 10a, and the reflective heat insulating layer 30 surrounds the outer surface of the heating body 20, thereby improving the insulating effect of the aerosol generating device 100a, reducing the cost of the aerosol generating device 100a, and preventing the volume of the aerosol generating device 100a from being too large.

Claims

1. A heating body includes a heating cylinder and a heat generating member, The heating barrel has one open end and the other closed end, and a bottom wall and a side wall of the heating barrel surround a receiving cavity for receiving an aerosol product, and the receiving cavity communicates with an aerosol outlet; the heat generating member is disposed on the side wall, the bottom wall or the side wall has a support protrusion facing the storage cavity, the support protrusion being used to support the aerosol product and form an intake cavity between the aerosol product and the bottom wall; A heating body characterized in that the side wall has a contact protrusion and a recess, the contact protrusion is arranged facing the storage cavity and is in thermally conductive contact with the outer surface of the aerosol product, the recess is used to form an enclosed intake passage together with the outer surface of the aerosol product, and the intake passage connects the aerosol outlet and the intake cavity.

2. a first contact area and a second contact area are provided in sequence on the side wall along the insertion direction of the aerosol product; The heating element described in claim 1, characterized in that the first contact area or the second contact area is spaced apart so as to be non-contact with the outer surface of the aerosol product, or the first contact area has a contact area with the outer surface of the aerosol product that is different from that of the second contact area.

3. the first contact area has a first annular clearance for spacing the first contact area from the outer periphery of the aerosol product so as to be out of contact with the first contact area, and the minimum inner diameter of the first contact area is greater than the minimum inner diameter of the second contact area; or The heating element of claim 2, characterized in that the second contact area has a second annular clearance for spacing the second contact area so that the second contact area and the outer surface of the aerosol product are not in contact, and the minimum inner diameter of the second contact area is larger than the minimum inner diameter of the first contact area.

4. The heating element described in claim 2, characterized in that the contact convex portion includes a first contact portion provided in the first contact area, the first contact portion being a plurality of first protrusions provided on the inner wall of the first contact area, the plurality of first protrusions being provided at intervals along the circumferential direction of the storage cavity, and the first protrusions being used to contact the outer peripheral surface of the aerosol product.

5. The heating element described in claim 2, characterized in that the contact convex portion includes a second contact portion provided in the second contact area, the second contact portion being a plurality of second protrusions provided on the inner wall of the second contact area, the plurality of second protrusions being provided at intervals along the circumferential direction of the storage cavity, and the second protrusions being used to contact the outer peripheral surface of the aerosol product.

6. the contact protrusion further includes a first contact portion provided in the first contact region, the first contact portion being a plurality of first protrusions provided on an inner wall of the first contact region, the plurality of first protrusions being spaced apart along the circumferential direction of the containing cavity, and the first protrusions being used to contact an outer peripheral surface of the aerosol product; a contact area between the first contact region and the outer peripheral surface of the aerosol product is larger than a contact area between the second contact region and the outer peripheral surface of the aerosol product, and a contact area between each of the second protrusions and the aerosol product is smaller than a contact area between each of the first protrusions and the aerosol product, or a total contact area between all of the second protrusions and the aerosol product is smaller than a total contact area between all of the first protrusions and the aerosol product, or The heating element described in claim 5, characterized in that the contact area between the first contact area and the outer peripheral surface of the aerosol product is smaller than the contact area between the second contact area and the outer peripheral surface of the aerosol product, the contact area between each of the second protrusions and the aerosol product is larger than the contact area between each of the first protrusions and the aerosol product, or the total contact area between all of the second protrusions and the aerosol product is larger than the total contact area between all of the first protrusions and the aerosol product.

7. The side wall is provided with a first heating area and a second heating area along an insertion direction of the aerosol product, and the intake passage is used for airflow to pass through the first heating area and the second heating area in order before entering the aerosol product; A heating body as described in any one of claims 1 to 6, characterized in that the heat-generating member includes a first heat-generating member arranged in the first heating region of the heating barrel, and a second heat-generating member arranged in the second heating region of the heating barrel.

8. 8. The heating element according to claim 7, wherein the first heat generating element and the second heat generating element are both resistance-type heat generating elements, and the first heat generating element and the second heat generating element are connected in parallel.

9. The heating element of claim 7, wherein a first electrical connection member, a second electrical connection member, and a third electrical connection member are arranged on the side wall, the first heat-generating element and the second heat-generating element each have two electrical connection terminals, the two electrical connection terminals of the first heat-generating element are electrically connected to the first electrical connection member and the third electrical connection member, respectively, the two electrical connection terminals of the second heat-generating element are electrically connected to the second electrical connection member and the third electrical connection member, respectively, the first electrical connection member and the second electrical connection member are used to electrically connect to the same electrode of an external power supply, and the third electrical connection member is used to electrically connect to another electrode of the external power supply.

10. A heating body as described in any one of claims 1 to 6, characterized in that the bottom wall has a support protrusion facing the accommodating cavity, the side wall has a first region and a second region along the axial direction of the heating cylinder, the first region is located on the side away from the bottom wall, and the second region is located on the side closer to the bottom wall, and the heat-generating member is fixed to the second region of the side wall.

11. One or more heat generating members are arranged, and the heat generating members form at least one layer of heating rings along the circumferential direction of the side wall; The heating element according to claim 10, characterized in that when multiple heat-generating elements are arranged, the multiple heat-generating elements are connected in parallel and arranged along the axial direction of the heating barrel.

12. The heating element according to claim 11, characterized in that one heat-generating element is arranged, the heat-generating element forms a single layer of the heating ring along the circumferential direction of the side wall, and connection electrodes for electrically connecting to a power source are fixed to both ends of the heat-generating element along the circumferential direction of the side wall.

13. a connecting member is provided between the heat generating member and the connecting electrode, the connecting member and the connecting electrode are provided in a one-to-one correspondence, and the connecting member is connected to the heat generating member and the connecting electrode respectively along the axial direction of the heating barrel, The heating element of claim 12, wherein one of the two connecting members is used to allow current to flow from the end edge of the heat-generating element to the heat-generating element via the connecting electrode, and the other of the two connecting members is used to allow current in the heat-generating element to flow from the end edge to the connecting electrode.

14. An aerosol generating device comprising a device main body and the heating element according to any one of claims 1 to 6, the device body has an aerosol outlet for inserting an aerosol product; An aerosol generating device characterized in that the heating element is attached to the device body, the bottom wall is spaced apart from the device body, the storage cavity is connected to the aerosol outlet, and the intake passage connects the aerosol outlet and the intake cavity.

15. The device body includes: a mounting base having the heating body provided therein; 15. The aerosol generating device according to claim 14, further comprising a reflective heat insulating layer provided between the mounting base and the heating element and surrounding the outer surface of the heating element.

Images