Vaporizing heating assembly and heat-not-burn device

Abstract

A vaporizing heating assembly (200) and a heat-not-burn device (100) are provided. A heating cylinder (21) of the vaporizing heating assembly is provided with a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article (40). On the one hand, the contact protruding portions (2112) on the side wall (211) of the heating cylinder are in heat-conducting contact with the outer circumferential surface of the aerosol-generating article to heat the aerosol-generating article through direct contact heating. On the other hand, external cold air enters the gas intake channel formed by the recessed portions (2113) on the side wall of the heating cylinder and the aerosol-generating article, the heating cylinder can heat gas flow in the gas intake channel to form hot gas flow, which then enters the aerosol-generating article from to heat it, thereby improving heat utilization rate and reducing heat loss of the vaporizing heating assembly and the heat-not-burn device.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to the following Chinese patent applications, and the entirety of each of the following patent applications is hereby incorporated by reference herein: the Chinese Patent Application No.: 2024219046010, filed on August 7, 2024, and titled Heat-Not-Burn Device and Heat-Not-Burn System; the Chinese Patent Application No.: 2024221315195, filed on August 30, 2024, and titled Vaporizing Heating Structure and Heat-Not-Burn Vaporizer; the Chinese Patent Application No.: 2024223319909, filed on September 24, 2024, and titled Heating Device, Vaporizing Apparatus and Electronic Vaporizer; the Chinese Patent Application No.: 2024221240574, filed on August 30, 2024, titled Heating Element, Vaporizing Device and Vaporizing Apparatus; the Chinese Patent Application No.: 2024226355714, filed on October 30, 2024, titled Vaporizing Device and Vaporizing Apparatus; the Chinese Patent Application No.: 2024228398362, filed on November 20, 2024, titled Atomizing Assembly and Heat-Not-Burn Device; and the Chinese Patent Application No.: 2024228449218, filed on November 20, 2024, titled Atomizing Assembly and Heat-Not-Burn Apparatus. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of heat-not-burn devices, and in particular to a vaporizing heating assembly and a heat-not-burn device.BACKGROUND ART

[0003] A heat-not-burn device usually includes a vaporizing heating assembly. The vaporizing heating assembly has a receiving chamber, and an aerosol-generating article is inserted into the receiving chamber. The vaporizing heating assembly is in contact with the aerosol-generating article to heat it through direct contact to generate aerosol.

[0004] In the prior art, hot gas flow is used to improve the heating uniformity of the aerosol-generating article. External cold air enters the heat-not-burn device through a gas intake, and is heated by the vaporizing heating assembly to form the hot gas flow, which then enters the aerosol-generating article from a bottom of the receiving chamber. After heating, the aerosol-generating article generates aerosol, which flows out through an aerosol outlet. The vaporizing heating assembly is usually installed at a bottom of the aerosol-generating article. Heat generated by the vaporizing heating assembly is transferred upward or downward in the heat-not-burn device. A large portion of the heat transferred downward cannot be utilized by the aerosol-generating article, resulting in significant heat loss in the heat-not-burn device.SUMMARY OF THE DISCLOSURE

[0005] The present disclosure provides a vaporizing heating assembly and a heat-not-burn device, so as to solve the technical problems of significant heat loss in existing heat-not-burn devices.

[0006] According to one aspect of the present disclosure, an embodiment of the present disclosure provides a vaporizing heating assembly, which includes a heating cylinder having one end open and the other end closed, a side wall and a bottom wall of the heating cylinder enclose to form a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article; a support protruding portion facing the receiving chamber is arranged on the bottom wall and / or the side wall; and the support protruding portion is configured to support the aerosol-generating article, thereby forming a gas intake chamber between the aerosol-generating article and the bottom wall; and the side wall is provided with a contact protruding portion and a recessed portion; and the contact protruding portion is arranged facing the receiving chamber, the contact protruding portion is configured to be in heat-conducting contact with an outer circumferential surface of the aerosol-generating article, and the recessed portion is configured to form a gas intake channel together with the outer circumferential surface of the aerosol-generating article, and an aerosol outlet is in fluid communication with the gas intake chamber through the gas intake channel.

[0007] In some embodiments, the contact protruding portion includes a contact rib, the contact rib extends in an axial direction of the heating cylinder, a plurality of the contact ribs are provided, two adjacent contact ribs are spaced apart in a circumferential direction of the heating cylinder, one recessed portion is formed between the two adjacent contact ribs, and the gas intake channels extend in the axial direction of the heating cylinder.

[0008] In some embodiments, each support protruding portion includes a support rib, a plurality of the support ribs are provided, a communication gap is formed between two adjacent support ribs, and the gas intake channels are in fluid communication with the gas intake chamber through the communication gap.

[0009] In some embodiments, the vaporizing heating assembly includes a mounting base, the heating cylinder is suspended inside the mounting base, an outward flange is disposed at an opening end of the heating cylinder away from the receiving chamber, and the outward flange abuts against the mounting base in the axial direction of the heating cylinder.

[0010] In some embodiment, the mounting base includes a heat-insulating cylinder and a sealing member, the heating cylinder is located in the heat-insulating cylinder and is coaxially arranged with the heat-insulating cylinder, the side wall of the heating cylinder is spaced apart from the heat-insulating cylinder, the sealing member is sealingly engaged with an opening of the heat-insulating cylinder, and the sealing member has a communication channel that is in fluid communication with the receiving chamber; and a support portion extending toward the heating cylinder is disposed on a cylindrical wall of the heat-insulating cylinder, and the outward flange is clamped between the support portion and the sealing member in an extension direction of the heating cylinder.

[0011] In some embodiments, the heating cylinder is formed of a conductive ceramic structure, and a positive electrode connection portion and a negative electrode connection portion configured to be connected to an external lead wire are arranged on an outer circumferential surface of the heating cylinder.

[0012] In some embodiments, the vaporizing heating assembly further includes a heating structure and a substrate layer, an outward flange protruding in a radial direction of the heating cylinder is disposed at an opening end of the heating cylinder, the substrate layer is fixed to the side wall of the heating cylinder between the outward flange and a cylinder bottom of the heating cylinder, and the heating structure is fixed to the substrate layer.

[0013] In some embodiments, the heating structure includes a first heating member and a second heating member that are connected in parallel, and the first heating member and the second heating member are respectively fixed to the substrate layer in an extension direction of the heating cylinder; and the first heating member forms at least one layer of first heating ring in a circumferential direction of the heating cylinder, and the second heating member forms at least one layer of second heating ring in the circumferential direction of the heating cylinder.

[0014] In some embodiments, the vaporizing heating assembly further includes a heating structure; the heating structure is located outside the heating cylinder and fixed to the side wall; the heating structure is configured to heat the heating cylinder, thereby radiating infrared rays into the receiving chamber and heating the gas flowing through the gas intake channels to generate hot gas flow, which can heat the aerosol-generating article inserted into the receiving chamber by both the infrared rays and the hot gas flow.

[0015] In some embodiments, the vaporizing heating assembly further includes a heating structure; the heating structure includes a heat-shrinkable tube and a heating circuit body; heat generated by the heating circuit body is transferred into the receiving chamber through the heating cylinder, and the heating circuit body has a sleeve-shaped sleeve joint portion; both the sleeve joint portion and the heat-shrinkable tube are sleeved on a periphery of the heating cylinder, and the sleeve joint portion is sandwiched between the heating cylinder and the heat-shrinkable tube; and the heat-shrinkable tube is configured to apply fixing force from a circumferential direction of the sleeve joint portion onto the heating circuit body to prevent the heating circuit body from being separated from the heating cylinder.

[0016] In some embodiments, the vaporizing heating assembly includes a mounting base, the heating cylinder is mounted in the mounting base, a closed end of the heating cylinder in the extension direction is suspended inside the mounting base, and spaced apart from the mounting base; and the vaporizing heating assembly further includes a coil, and the coil is located on a side of the closed end of the heating cylinder away from the receiving chamber in the extension direction of the heating cylinder; the coil includes an inner coil and an outer coil, a winding size of the inner coil is smaller than a winding size of the outer coil; and the coil is configured to generate an alternating magnetic field, and the heating cylinder is configured to be inductively coupled to the coil to generate heat in the alternating magnetic field.

[0017] In some embodiments, the vaporizing heating assembly includes a heat-insulating cylinder arranged in the extension direction of the heating cylinder; the heating cylinder is located inside the heat-insulating cylinder and is connected to the heat-insulating cylinder; and the closed end of the heating cylinder is suspended inside the heat-insulating cylinder and spaced apart from a cylinder wall of the heat-insulating cylinder; and the vaporizing heating assembly further includes a coil winding, and the coil winding is disposed outside the heat-insulating cylinder; and an axis of the coil winding is arranged in the extension direction of the heating cylinder, and the coil winding is configured to generate an alternating magnetic field that causes the heating cylinder to heat up.

[0018] In some embodiments, the vaporizing heating assembly includes a mounting base, and the heating cylinder is mounted in the mounting base; and the vaporizing heating assembly further includes a reflective heat-insulating layer, and the reflective heat-insulating layer is disposed between the mounting base and the heating cylinder, and surrounds an outer surface of the heating cylinder.

[0019] According to another aspect of the present disclosure, an embodiment of the present disclosure provides a heat-not-burn device, which includes a device body and any of the vaporizing heating assembly described above; the device body includes an aerosol outlet for inserting an aerosol-generating article; and the vaporizing heating assembly is mounted in the device body, a receiving chamber is in fluid communication with the aerosol outlet, and a bottom wall of the heating cylinder is spaced apart from the device body.

[0020] For the vaporizing heating assembly and the heat-not-burn device described in the above embodiments, the vaporizing heating assembly includes a heating cylinder having one end open and the other end closed, wherein a side wall and a bottom wall of the heating cylinder enclose to form a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article; support protruding portions facing the receiving chamber are arranged on the bottom wall and / or the side wall, the support protruding portions are configured to support the aerosol-generating article, thereby forming a gas intake chamber between the aerosol-generating article and the bottom wall; and the side wall is provided with a contact protruding portion and a recessed portion, the contact protruding portion is arranged facing the receiving chamber, the contact protruding portion is configured to be in heat-conducting contact with an outer circumferential surface of the aerosol-generating article, the recessed portion is configured to form gas intake channels together with the outer circumferential surface of the aerosol-generating article to, and an aerosol outlet is in fluid communication with the gas intake chamber through the gas intake channels. On the one hand, the contact protruding portions on the side wall of the heating cylinder are in heat-conducting contact with the outer circumferential surface of the aerosol-generating article to heat the aerosol-generating article through direct contact heating. On the other hand, external cold air enters the gas intake channel formed by the recessed portions on the side wall of the heating cylinder and the aerosol-generating article, the heating cylinder can heat gas flow in the gas intake channel to form hot gas flow, and the hot gas flow then enters the aerosol-generating article from the gas intake chamber on an axial end of the aerosol-generating article to heat the aerosol-generating article, such that the heat-not-burn device can directly heat the aerosol-generating article through direct contact heating and hot gas flow heating, heat loss of the heat-not-burn device is reduced and heat utilization rate of the heat-not-burn device is improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic diagram of a three-dimensional structure of a heat-not-burn device and an aerosol-generating article according to an embodiment. FIG. 2 is a top view of a heat-not-burn device and an aerosol-generating article according to an embodiment. FIG. 3 is a sectional view in an A-A direction in FIG. 2. FIG. 4 is a sectional view in a B-B direction in FIG. 3. FIG. 5 is a schematic diagram of an internal structure of a heating cylinder according to an embodiment. FIG. 6 is a schematic structural diagram of a heating cylinder and a heating structure according to an embodiment. FIG. 7 is a schematic structural diagram of a vaporizing heating assembly according to an embodiment. FIG. 8 is a schematic structural diagram of a heating cylinder, a heating circuit body and a heat-shrinkable tube according to an embodiment. FIG. 9 is a schematic diagram of partially exploded structures of a heating cylinder, a heating circuit body and a heat-shrinkable tube according to an embodiment. FIG. 10 is a schematic diagram of partially exploded structures of a heating cylinder, a substrate layer and a heating structure according to an embodiment. FIG. 11 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to one embodiment. FIG. 12 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to another embodiment. FIG. 13 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to yet another embodiment. FIG. 14 is a schematic diagram of structures of a first heating ring and a second heating ring and their arrangement positions on a heating cylinder according to one embodiment. FIG. 15 is a schematic diagram of structures of a first heating ring and a second heating ring and their arrangement positions on a heating cylinder according to another embodiment. FIG. 16 is a schematic structural diagram of a heat-not-burn device using electromagnetic induction heating according to one embodiment. FIG. 17 is a schematic structural diagram of a winding structure of a coil according to one embodiment. FIG. 18 is a schematic structural diagram of a winding structure of a coil according to another embodiment. FIG. 19 is a schematic diagram of an internal structure of a heat-not-burn device and an aerosol-generating article according to an embodiment.

[0022] FIGs. 1-19: 100. device body; 101. housing; 102. aerosol outlet; 103. positioning ring; 104. power supply device; 200. vaporizing heating assembly; 11. mounting base; 12. sealing member; 121. communication channel; 13. clamping member; 131. protrusion; 14. heat-insulating cylinder; 141. support arm; 15. plug; 21. heating cylinder; 211. side wall; 2112. contact protruding portion; 2113. recess; 212. bottom wall; 2121. support protruding portion; 2122. communication gap; 213. outward flange; 214. opening end; 215. closed end; 22. external lead wire; 31. gas intake channel; 32. gas intake channel; 33. heat-insulating cavity; 34. reflective heat-insulating layer; and 40. aerosol-generating article;

[0023] FIG. 6: 50. heating structure; 51. heating member; 511. first heating member; 512. second heating member; 52. electrical connector; 521. first pad; 522. second pad; and 523. third pad;

[0024] FIGs. 7-9: 53. heat-shrinkable tube; 54. heating circuit body; 541. sleeve joint portion; and 542. electrical contact pin;

[0025] FIGs. 10-15: 60. substrate layer; 61. first heating element; 611. first heating ring; 62. second heating element; 621. second heating ring; 63. connecting electrode; and 64. common electrode;

[0026] FIG. 16: 71. coil;

[0027] FIG. 19: 81: coil winding; and 811. coil unit.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present disclosure will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are labeled with associated similar element labels. In the following embodiments, more details are described to facilitate clearer understanding of the present disclosure. However, those skilled in the art can readily recognize that some of the features can be omitted in different cases, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present disclosure are not shown or described in the specification, with the aim of preventing the important part of the present disclosure from being overwhelmed by excessive description, and for those skilled in the art, it is unnecessary to describe these related operations in detail, and they can gain a thorough understanding of the related operations according to the description in the specification and the general technical knowledge in the field.

[0029] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. The operation steps described in the embodiments may also be replaced or adjusted in a manner apparent to those skilled in the art. Therefore, the specification and the accompanying drawings are merely for clear description of an embodiment, and are not to be construed as necessarily limiting the components and / or the sequence thereof.

[0030] The serial numbers assigned to the components herein, such as "first", "second", are only used to distinguish the described objects, and do not have any sequence or technical meaning. The terms "connection" and "coupling" mentioned herein include direct and indirect connection (coupling), unless otherwise specified.

[0031] An embodiment of the present disclosure discloses a vaporizing heating assembly 200, which is applied in a heat-not-burn device to accommodate an aerosol-generating article 40, and heat the aerosol-generating article 40 to generate an aerosol.

[0032] Referring to FIGs. 2-10, FIGs. 14-16, and FIG. 19, the vaporizing heating assembly 200 of the embodiment of the present disclosure includes a heating cylinder 21 having one end open and the other end closed. The heating cylinder 21 is generally a cylindrical structure, the heating cylinder 21 has a bottom wall 212 and a side wall 211, the bottom wall 212 and the side wall 211 of the heating cylinder 21 enclose to form a receiving chamber, the receiving chamber is configured to accommodate the aerosol-generating article 40. The aerosol-generating article 40 may be inserted into the receiving chamber from an opening end 214 of the heating cylinder 21, enabling the installation of the aerosol-generating article 40 in the vaporizing heating assembly 200.

[0033] In some embodiments, referring to FIGs. 3, 4, 16, and 19, the vaporizing heating assembly 200 includes a mounting base 11. The heating cylinder 21 is suspended inside the mounting base 11, an outward flange 213 is formed at the opening end 214 of the heating cylinder 21, the outward flange 213 is connected to the side walls 211 of the heating cylinder 21, and the outward flange 213 extends towards a radial outer side of the heating cylinder 21 to form a radial outer flange. The outer flange may be a continuous annular structure extending in a circumferential direction, or a discontinuous structure in the circumferential direction, that is, it includes a plurality of protruding structures spaced apart in the circumferential direction. The outward flange 213 of the heating cylinder 21 can abut against the mounting base 11 in an axial direction of the heating cylinder 21, thereby fixing a position of the heating cylinder 21 in the mounting base 11.

[0034] In one embodiment, a heat-insulating cylinder 14 is provided with openings at both ends in an axial direction, the opening at one end is sealed by a plug 15, and the opening at the other end is sealingly engaged with a sealing member 12. In another embodiment, the heat-insulating cylinder 14 may be provided with an opening at one end and a closed end at the other end in an axial direction, and the opening end 214 of the heat-insulating cylinder 14 is sealingly engaged with the sealing member 12.

[0035] The heating cylinder 21 is located inside the heat-insulating cylinder 14, and is coaxially arranged with the heat-insulating cylinder 14. The bottom wall 212 of the heating cylinder 21 and the plug 15 are spaced apart in the axial direction of the heating cylinder 21, and the side wall 211 of the heating cylinder 21 and a cylinder wall of the heat-insulating cylinder 14 are also spaced apart, such that heat transfer to the heat-insulating cylinder 14 due to direct contact between the heating cylinder 21 and the heat-insulating cylinder 14 is reduced. A communication channel 121 coaxially arranged with the heat-insulating cylinder 14 is formed on the sealing member 12, the communication channel 121 is in fluid communication with the receiving chamber, such that the aerosol-generating article 40 can be inserted into the receiving chamber through the communication channel 121.

[0036] In one embodiment, referring to FIGs. 3, 4, 16, and 19, a support portion extending toward an interior of the heat-insulating cylinder 14 is disposed on a cylindrical wall of the heat-insulating cylinder 14. The support portion may include a support arm 141, one end of the support arm 141 is connected to the cylindrical wall of the heat-insulating cylinder 14, and the other end thereof is suspended inside the heat-insulating cylinder 14. The support arm 141 is an annular structure, and the outward flange 213 of the heating cylinder 21 is supported on the support arm 141. Alternatively, the support arm 141 is a discontinuous structure in a circumferential direction, that is, the support arm 141 includes a plurality of support structures spaced apart in the circumferential direction, to adapt to a plurality of protruding structures spaced apart in a circumferential direction of the outward flange 213. The sealing member 12 has a portion extending into the interior of the heat-insulating cylinder 14, and the sealing member 12 may abut against the outward flange 213 in the axial direction of the heating cylinder 21, in this way, the heating cylinder 21 is clamped and fixed in the heat-insulating cylinder 14 by the support arm 141 and the sealing member 12, to achieve fixation of a position of the heating cylinder 21 in the heat-insulating cylinder 14. Further, the sealing member 12 abuts against the outward flange 213 in the axial direction of the heating cylinder 21 to achieve sealing between the sealing member 12 and the heating cylinder 21. In this way, the heating cylinder 21 is suspended inside the heat-insulating cylinder 14, which can reduce a contact area between the heating cylinder 21 and the heat-insulating cylinder 14, and reduce an amount of heat transferred from the bottom wall of the heating cylinder 21 away from the receiving chamber and toward the vaporizing heating assembly 200 or the bottom of the entire heat-not-burn device. As a result, heat loss is reduced and the heat utilization rate of the heat-not-burn device is improved.

[0037] Of course, in other embodiments, the mounting base 11 is not provided with the heat-insulating cylinder 14 and the sealing member 12. The entire heat-not-burn device includes a device body 100. The device body 100 includes a housing 101, the housing 101 has a mounting chamber, and the heating cylinder 21 of the vaporizing heating assembly 200 is located in the mounting chamber, the bottom wall 212 and the side wall 211 of the heating cylinder 21 are spaced apart from the housing 101, the support arm extending toward the interior of the mounting chamber may be disposed on the housing 101, and a necked-down portion is formed on an outer side surface of the side wall 211 of the heating cylinder 21. The support arm cooperates with the necked-down portion to suspend and fix the heating cylinder 21 in the housing 101, which can also reduce an amount of heat transferred from the heating cylinder 21, due to direct contact the heat-insulating cylinder, away from the receiving chamber and toward the bottom of the heat-not-burn device. As a result, heat loss is reduced and the heat utilization rate of the heat-not-burn device is improved.

[0038] In some embodiments, referring to FIGs. 3, 4, 7, 16, and 19, the heating cylinder 21 cooperates with the mounting base 11 through the outward flange 213, to enable the heating cylinder 21 to be mounted and fixed in the mounting base 11. The vaporizing heating assembly 200 further includes a reflective heat-insulating layer 34. The reflective heat-insulating layer 34 is disposed between the mounting base 11 and the heating cylinder 21, and surrounds an outer surface of the heating cylinder 21. When the heating cylinder 21 heats the aerosol-generating article 40, the reflective heat-insulating layer 34 can reflect thermal radiation from the heating cylinder 21 to prevent heat generated by the heating cylinder 21 from being transferred to the mounting base 11. The reflective heat-insulating layer 34 does not retain heat itself, exhibits good heat insulation effect, and is cost-effective and space-saving.

[0039] Specifically, in the embodiments where the mounting base 11 includes the sealing member 12, the heat-insulating cylinder 14, and the plug 15, the sealing member 12, the heat-insulating cylinder 14, and the plug 15 enclose to form a cavity; or in other embodiments, the sealing member 12 and the heat-insulating cylinder 14 enclose to form a cavity, and the heating cylinder 21 is located in the cavity. An inner surface of the cavity forms an inner surface of the mounting base 11, a gap is maintained between a cylinder wall of the heating cylinder 21 and a cavity wall of the cavity, such that the heating cylinder 21 is suspended inside the mounting base 11 as a whole.

[0040] A width of the gap between the cylinder wall of the heating cylinder 21 and the cavity wall of the cavity is greater than or equal to 0.3 mm. Specifically, A gap between the side wall 211 of the heating cylinder 21 and the cylinder wall of the heat-insulating cylinder 14 may be equal to or greater than 0.3 mm, such as 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, and 0.5 mm.

[0041] The heating cylinder 21 and the mounting base 11 enclose to form a heat-insulating cavity 33 surrounding the heating cylinder 21. The reflective heat-insulating layer 34 is located in the heat-insulating cavity 33 and may be disposed on a cavity wall of the heat-insulating cavity 33, for example, it may be coated on an outer circumferential surface e of the heating cylinder 21. Alternatively, it may be disposed on the inner surface of the mounting base 11, that is, it may be coated on an inner surface of the heat-insulating cylinder 14 and an end surface of the plug 15 facing the heat-insulating cavity 33. Alternatively, the inner surface of the mounting base 11 and the outer surface of the heating cylinder 21 are both coated with the reflective heat-insulating layer 34. Or in other embodiments, no gap is provided between the cylinder wall of the heating cylinder 21 and the inner surface of the mounting base 11, and the reflective heat-insulating layer 34 is sandwiched between the heating cylinder 21 and the mounting base 11.

[0042] In some embodiments, a thickness of the reflective heat-insulating layer 34 is less than or equal to 0.2 mm, thereby saving material and reducing costs. Specifically, the thickness of the reflective heat-insulating layer 34 may be 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, and the like.

[0043] In some embodiments, the reflective heat-insulating layer 34 is a reflective heat-insulating film made of a low-emissivity material, to improve the performance of the reflective heat-insulating layer 34 in reflecting thermal radiation. The reflective heat heat-insulating layer 34 includes any one of an aluminum layer, a silver layer, a stainless steel layer, or a ceramic layer.

[0044] In one embodiment, still referring to FIGs. 2-4, 16, and 19, for the entire heat-not-burn device, the device body 100 includes a housing 101, and the housing 101 has an aerosol outlet 102. The vaporizing heating assembly 200 is clamped inside the housing 101 in the axial direction of the heating cylinder 21, the aerosol outlet 102 is in fluid communication with the receiving chamber through the communication channel 121, the aerosol-generating article 40 may be inserted from the aerosol outlet 102 into the receiving chamber through the communication channel 121, to achieve the installation of the aerosol-generating article 40 in the vaporizing heating assembly 200.

[0045] The housing 101 may be provided with a positioning ring 103 at the aerosol outlet 102, and the sealing member 12 is clamped between the heat-insulating cylinder 14 and the positioning ring 103 in the axial direction of the heating cylinder 21, thereby fixing positions of the sealing member 12 and the positioning ring 103 in the housing 101. The positioning ring 103 and the sealing member 12 enclose to form an annular groove. A clamping member 13 is installed in the annular groove, the clamping member 13 is an annular structure, and the clamping member 13 is made of a rubber material. The clamping member 13 is provided with protrusions 131 that face radially inward, and the protrusions 131 are evenly spaced in a circumferential direction of the clamping member 13. The aerosol-generating article 40 can enter the housing 101 from the aerosol outlet 102, pass through the communication channel 121 in the sealing member 12 and enter the receiving chamber formed by the heating cylinder 21. After the aerosol-generating article 40 enters the receiving chamber, the clamping member 13 can elastically abut against an outer circumferential surface of the aerosol-generating article 40 through the protrusions 131 in an axial direction of the heating cylinder 21, thereby limiting and fixing the aerosol-generating article 40, and preventing shaking of the aerosol-generating article 40. It can prevent the aerosol-generating article 40 from axial movement and detaching from the receiving chamber, and can improve the assembly stability of the aerosol-generating article 40, thereby avoiding affecting normal heating operation of the aerosol-generating article 40.

[0046] In some embodiments, referring to FIGs. 3-10, 14-16, and 19, the side wall 211 of the heating cylinder 21 has a contact protruding portion 2112 protruding inwardly toward the receiving chamber, and a recessed portion 2113 is formed on the side wall 211 of the heating cylinder 21. After the aerosol-generating article 40 is installed in the receiving chamber, the contact protruding portions 2112 can be in heat-conducting contact with the outer circumferential surface of the aerosol-generating article 40 to transfer heat from the heating cylinder 21 to the aerosol-generating article 40, thereby heating the aerosol-generating article 40 through direct contact. After the contact protruding portions 2112 contact the aerosol-generating article 40, the recessed portions 2113 on the side wall 211 of the heating cylinder 21 can enclose the outer circumferential surface of the aerosol-generating article 40 to form gas intake channels 31 in communication with the aerosol outlet 102, external cold air entering the housing 101 from the aerosol outlet 102 enter the gas intake channels 31 through gaps between adjacent protrusions 131 on the clamping member 13 and annular gaps between the sealing member 12 and the aerosol-generating article 40.

[0047] In one embodiment, referring to FIG. 5, the contact protruding portion 2112 on the side wall 211 of the heating cylinder 21 includes a contact rib. The contact rib extends in the axial direction of the heating cylinder 21, a length of each contact rib is equal to or slightly less than a size of the side wall 211 of the heating cylinder 21 in the axial direction of the heating cylinder 21. A plurality of the contact ribs may be provided, two adjacent contact ribs are evenly spaced in the circumferential direction of the heating cylinder 21, one recessed portion 2113 is formed between the two adjacent contact ribs on the side wall 211 of the heating cylinder 21. The recessed portions 2113 form grooves extending in the axial direction of the heating cylinder 21, the recessed portions 2113 are evenly spaced in the circumferential direction of the heating cylinder 21, and the gas intake channels 31 formed by enclosing the recessed portions 2113 and the outer circumferential surface of the aerosol-generating article 40 and are also evenly spaced in the circumferential direction of the heating cylinder 21, such that the aerosol-generating article 40 and the side wall 211 of the heating cylinder 21 enclose to form a plurality of the gas intake channels 31 that extend in the axial direction of the heating cylinder 21 and are evenly spaced in the circumferential direction of the heating cylinder, which is conductive to reducing flow resistance of the gas flow in the gas intake channels 31, reducing inhalation resistance of the heat-not-burn device, and facilitating uniform distribution of the gas flow in the circumferential direction of the aerosol-generating article 40.

[0048] In another embodiment, the contact protruding portions 2112 on the side wall 211 of the heating cylinder 21 may also include circular dot-shaped protruding portions, and a plurality of the circular dot-shaped protruding portions are provided. Two adjacent circular dot-shaped protruding portions are evenly spaced in the circumferential and axial direction of the heating cylinder 21, and the recessed portions 2113 on the side wall 211 of the heating cylinder 21 are formed between the two adjacent circular dot-shaped protruding portions. The recessed portions 2113 and the outer circumferential surface of the aerosol-generating article 40 enclose to form the gas intake channels 31, such that the gas intake channels 31 can be extended in the axial direction of the heating cylinder 21, further reducing flow resistance of the gas flow in the gas intake channels 31 and decreasing inhalation resistance.

[0049] In some other embodiments, the contact protruding portions 2112 on the side wall 211 of the heating cylinder 21 may further include wavy strip-shaped structures or other irregular shapes, as long as the contact protruding portions 2112 can contact the outer circumferential surface of the aerosol-generating article 40, and the recessed portions 2113 formed between two adjacent contact protruding portions 2112 and the aerosol-generating article 40 enclose to form the gas intake channels 31 in communication with the aerosol outlet 102.

[0050] The side wall 211 of the heating cylinder 21 is provided with the contact protruding portion 2112 and the recessed portion 2113, the contact protruding portion 2112 is in heat-conducting contact with the outer circumferential surface of the aerosol-generating article 40, and the recessed portion 2113 and the outer circumferential surface of the aerosol-generating article 40 enclose to form the gas intake channels 31. On the one hand, heat from the heating cylinder 21 can be transferred to the aerosol-generating article 40 through direct contact between the contact protruding portions 2112 and the outer circumferential surface of the aerosol-generating article 40, so as to heat the aerosol-generating article 40. On the other hand, when the external cold air flows through the gas intake channels 31, heat is transferred from the side wall 211 of heating cylinder 21 to the gas flow in the gas intake channels 31 to form hot gas flow through the contact between the side wall 211 of the heating cylinder 21 and the gas flow in the gas intake channel 31, to facilitate the subsequent heating of the aerosol-generating article 40 through the hot gas flow to improve heating uniformity of the aerosol-generating article 40. By combining direct contact heating and hot gas flow heating of the aerosol-generating article 40, the heat utilization rate of the vaporizing heating assembly 200 is effectively improved, thereby reducing heat loss and lowering energy consumption of the heat-not-burn device.

[0051] In some embodiments, in order to increase the contact area between the aerosol-generating article 40 and the side wall 211 of the heating cylinder 21 and thereby improve heat transfer efficiency between the heating cylinder 21 and the aerosol-generating article 40, the contact protruding portions 2112 may be embedded into the aerosol-generating article 40.

[0052] For example, in one embodiment, referring to FIG. 5, the contact ribs have a thickness extending in the circumferential direction of the heating cylinder 21. The thickness of the contact ribs can be gradually reduced in a radial direction of the heating cylinder 21 from the side wall 211 of the heating cylinder 21 toward the receiving chamber, to facilitate embedding of the contact ribs into the aerosol-generating article 40. On the one hand, the contact area between the contact ribs and the aerosol-generating article 40 can be increased, thereby improving heat transfer efficiency between the heating cylinder 21 and the aerosol-generating article 40; on the other hand, the contact ribs can be embedded into the aerosol-generating article 40 to reduce the probability of the aerosol-generating article 40 detaching from the receiving chamber.

[0053] Further, in one embodiment, the thickness of the contact ribs may be gradually increased from the opening end 214 of the heating cylinder 21 to the closed end 215 in the axial direction of the heating cylinder 21, such that the contact ribs are wedged tightly into the aerosol-generating article 40 in the axial direction of the heating cylinder 21, the contact area between the aerosol-generating article 40 and the heating cylinder 21 is further increased, the heat transfer efficiency is further improved, and the probability of the aerosol-generating article 40 detaching from the receiving chamber is further reduced.

[0054] In another embodiment, the contact protruding portions 2112 may be arranged as dot-shaped protruding portions having a shape similar to a cone, and the dot-shaped protruding portions have tips located radially inward in the radial direction of the heating cylinder 21, and the contact protruding portions may be embedded into the aerosol-generating article 40 through the tips of the dot-shaped protruding portions to increase the contact area between the contact protruding portions 2112 and the aerosol-generating article 40.

[0055] In order to ensure that the hot gas flow formed in the gas intake channel 31 can heat the aerosol-generating article 40, support protruding portions 2121 facing the receiving chamber may be arranged on the bottom wall 212 or the side wall 211, or on both the bottom wall 212 and the side wall 211 of the heating cylinder 21. The support protruding portions 2121 is configured to support the aerosol-generating article 40 in the axial direction of the heating cylinder 21, to prevent the aerosol-generating article 40 from contacting the bottom wall 212 of the heating cylinder 21, such that a gas intake chamber 32 in communication with the gas intake channel 31 is formed between the aerosol-generating article 40 and the bottom wall 212 of the heating cylinder 21, the hot gas flow in the gas intake channel 31 can enter the gas intake chamber 32, and then enter the aerosol-generating article 40 from an axial end of the aerosol-generating article 40 to heat the aerosol-generating article 40. The aerosol generated by heating can exit through the aerosol outlet 102 and be discharged from the opposite end of the aerosol-generating article 40. Directions indicated by arrows in FIGs. 16 and 19 are the gas flow directions. The arrangement of the gas intake chamber 32 can provide sufficient space for the flow of hot gas flow, especially at a position opposite to the axial end of the aerosol-generating article 40, which can effectively prevent the hot gas flow from being blocked, and ensure that the hot gas flow is inhaled into the interior of the aerosol-generating article 40 from the axial end of the aerosol-generating article 40.

[0056] In some embodiments, referring to FIGs. 3-10, 14-16, and 19, the support protruding portions 2121 may be arranged on the bottom wall 212 of the heating cylinder 21, a plurality of the support protruding portions 2121 are provided, two adjacent support protruding portions 2121 are spaced apart on the bottom wall 212 of the heating cylinder 21 to form a communication gap 2122 between the two adjacent support protruding portions 2121, and the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122.

[0057] For example, in one embodiment, still referring to FIG. 5, each support protruding portion 2121 may include support ribs, the support ribs extend in the radial direction of the heating cylinder 21, and dimensions of the support ribs in the radial direction of the heating cylinder 21 are smaller than radial dimensions of the receiving chamber, such that the gas intake chamber 32 is formed between the bottom wall 212 and the aerosol-generating article 40 where the no support ribs are provided. The communication gap 2122 is formed between the two adjacent support ribs, and the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122.

[0058] Further, in one embodiment, referring to FIG. 5, a number of the support ribs may be set to be equal to a number of the contact ribs, and the support ribs are connected to the contact ribs one by one, so as to ensure that the communication gaps 2122 are in direct communication with the gas intake channels 31 in the axial direction of the heating cylinder 21, which can, on the one hand, reduce the resistance of the hot gas flow entering the gas intake chamber 32 from the gas intake channel 31, thereby lowering the inhalation resistance; and on the other hand, it can make a movement direction of each gas flow stream, preventing it from flowing to an adjacent position. This can effectively avoid the vibration caused by gas flow turbulence, and is conducive to improving the stability of the aerosol-generating article 40 during inhalation and improving the user experience.

[0059] In another embodiment, the support protruding portions 2121 may include cylindrical dot-shaped protruding portions, which are located on the bottom wall 212 of the heating cylinder 21 to support an axial end face of the aerosol-generating article 40. One communication gap 2122 are formed between two adjacent cylindrical dot-shaped protruding portions, and the gas intake chamber 32 is also formed between the bottom wall 212 without the cylindrical dot-shaped protruding portions and the aerosol-generating article 40. In this way, the communication gaps 2122 enable communication between the gas intake channels 31 and the gas intake chambers 32.

[0060] Of course, in other embodiments, some of the support protruding portions may be arranged on the side wall of the heating cylinder. For example, each support protruding portion includes a support rib; the support ribs are spaced apart from the bottom wall of the heating cylinder, and the support ribs are connected to the contact ribs. One communication gap is formed between two adjacent support ribs, and the aerosol-generating article is supported through the support ribs to form the gas intake chamber between the bottom wall of the heating cylinder and the aerosol-generating article. The gas intake channel is in fluid communication with the gas intake chamber through the communication gap.

[0061] In the embodiments where the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122 between the two support protruding portions 2121, the hot gas flow in the gas intake channel 31 can enter the gas intake chamber 32 through the communication gap 2122, then enter the aerosol-generating article 40 from the end of the aerosol-generating article 40 to heat the aerosol-generating article 40, and retain a portion of the hot gas flow through the gas intake chamber 32 to ensure the continuity of aerosol generation of the aerosol-generating article 40.

[0062] In one embodiment, referring to FIGs. 3-5, the heating cylinder 21 is formed of a conductive ceramic structure, that is, the heating cylinder 21 is made of a conductive ceramic material. The heating cylinder 21 itself can generate heat when being energized, which facilitates the manufacturing of the vaporizing heating assembly 200 and helps ensure structural consistency between the vaporizing heating assembly 200 and the entire heat-not-burn device.

[0063] In some embodiments, the vaporizing heating assembly 200 includes an external lead wire 22. A positive electrode connection portion (not shown in the figure) and a negative electrode connection portion (not shown in the figure) that are connected to the external lead wire 22 are arranged on an outer circumferential surface of the heating cylinder 21. The heating cylinder 21 is electrically connected to a power supply device 104 in the main device body 100 through the external lead wire 22, so as to control the heating of the vaporizing heating assembly 200 through a circuit board.

[0064] In one embodiment, a plurality of the external lead wires 22 may be provided, and a plurality of the electrode connection portion positive and the negative electrode connection portions may be spaced apart on the corresponding heating cylinder 21. By separately controlling the power supply of different external lead wires 22, zoned heating of the heating cylinder 21 or heating film can be achieved.

[0065] Further, a number of positive electrode connection portions may be two, three, or four or more, the plurality of the positive electrode connection portions are spaced apart in the axial direction of the heating cylinder 21. The positive electrode connection portion and the negative electrode connection portions are alternately arranged in the axial direction of the heating cylinder 21. A number of the external lead wires 22 are equal to a total number of the positive electrode connection portion and the negative electrode connection portions. Each positive electrode connection portion and each negative electrode connection portion are connected to one external lead wire 22. By controlling the power supply between two adjacent positive electrode connection portion and negative electrode connection portion at different position in the axial direction, heating can be achieved in an area between the energized the positive electrode connection portion and the negative electrode connection portion on the heating cylinder 21. Heating of different heating zones can be controlled in sequence in the axial direction of the heating cylinder 21 to ensure continuity of aerosol generation, and help ensure the taste of aerosol at each state of aerosol generation.

[0066] Of course, in other embodiments, one positive electrode connection portion and one negative electrode connection portions may be provided, as long as the heating cylinder 21 can achieve heating to heat the aerosol-generating article 40 and the gas flow.

[0067] In some embodiments, the vaporizing heating assembly 200 further includes a heating structure 50. The heating structure 50 is located outside the heating cylinder 21 and fixed to the side wall 211 of the heating cylinder 21. The heating structure 50 is configured to heat the heating cylinder 21, thereby radiating infrared rays into the receiving chamber and heating the gas flowing through the gas intake channels 31 to generate hot gas flow, which can also heat the aerosol-generating article 40 inserted into the receiving chamber with infrared rays and hot gas flow at the same time, which can effectively increase an amount of heating received inside the aerosol-generating article 40, ensuring more uniform heating inside and outside the aerosol-generating article 40, and thereby improving the vaporization efficiency.

[0068] When the aerosol-generating article 40 is inserted into the receiving chamber for heating, the heating structure 50, on the one hand, directly transfers heat to the aerosol-generating article 40 by radiating the infrared rays, and on the other hand transfers heat to the heating cylinder 21. The heating cylinder 21 heats the gas flow passing through the gas intake channel 31 to form hot gas flow. As a user inhales the aerosol-generating article 40, the hot gas flow flows along the gas intake channel 31 to the gas intake chamber 32, and is inhaled into the interior of the aerosol-generating article 40, and the heat carried by the hot gas flow heats the interior of the aerosol-generating article 40. In addition, the aerosol-generating article 40 in contact with the heating cylinder 21 can be heated directly by the heating cylinder 21, so as to heat the aerosol-generating article 40 through direct heat transfer.

[0069] Referring to FIG. 6, the heating structure 50 includes a heating member 51 and an electrical connector 52. The heating member 51 is connected to the side wall 211 of the heating cylinder 21, and extends in the circumferential direction of the heating cylinder 21. The electrical connector 52 is also arranged on the side wall 211 of the heating cylinder 21, and is connected to the heating member 51. The electrical connector 52 can be connected to the power supply device 104 through the external lead wire 22, such that the power supply device 104 supplies power to the heating member 51, causing the heating member 51 to generate heat and then heat a corresponding area on the heating cylinder 21. The heating cylinder 21 is made of an infrared-transparent material. When the heating member 51 is generated, infrared rays generated thereby can penetrate the heating cylinder 21 and radiate into the receiving chamber, heating the aerosol-generating article 40 in the cavity as well as the gas flow in the gas intake channel 31. A number of the heating members 51 may be one or more, and a number of the electrical connectors 52 is determined according to the number of the heating members 51.

[0070] Materials for the heating cylinder 21 include, but are not limited to, glass and ceramic. The heating cylinder 21 made of the materials is suitable for allowing infrared rays to pass through and exhibits high thermal conductivity, enabling direct contact heating of the aerosol-generating article 40, or enabling the infrared rays to pass through the heating cylinder 21 to directly heat the aerosol-generating article 40.

[0071] In some embodiments, referring to FIG. 6, the heating member 51 specifically includes a first heating member 511 and a second heating member 512. The electrical connector 52 specifically includes a first pad 521, a second pad 522, and a third pad 523. The first heating member 511 and the second heating member 512 are spaced apart on the side wall 211 of the heating cylinder 21 in an extension direction of the heating cylinder 21, the first heating member 511 is located near the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21, and the second heating member 512 is located away from the opening end 214 of the heating cylinder 21. The first pad 521, the second pad 522, and the third pad 523 are all arranged between the first heating member 511 and the second heating member 512. One end of the first heating member 511 in a circumferential direction is connected to the first pad 521, and the other end thereof is connected to the second pad 522. One end of the second heating member 512 in a circumferential direction is connected to the first pad 521, and the other end thereof is connected to the third pad 523. The first pad 521, the second pad 522, and the third pad 523 are respectively electrically connected to the power supply device 104 or a corresponding circuit, such that the first heating member 511 and the second heating member 512 can be connected in parallel. Specifically, the pads and the heating members 51 can be connected through a conductive silver paste or other conductive bodies.

[0072] Still referring to FIG. 6, when the first pad 521 and the second pad 522 are both energized, the first heating member 511 is powered on, and the first heating member 511 heats up alone. When the first pad 521 and the third pad 523 are both energized, the second heating member 512 is powered on, and the second heating member 512 heats up alone. When the first pad 521, the second pad 522, and the third pad 523 are all energized simultaneously, both the first heating member 511 and the second heating member 512 are powered on and heat up at simultaneously. The power supply device 104 or the corresponding circuit can independently control heating temperatures of the first heating member 511 and the second heating member 512 to allow appropriate adjustment and control according to use requirements.

[0073] For example, one end of the aerosol-generating article 40 located in the receiving chamber in an extension direction of the aerosol-generating article, that is, in the extension direction of the heating cylinder 21, is the a gas intake end. A substrate segment of the aerosol-generating article 40 for accommodating an aerosol substrate is located at the gas intake end. A portion located outside the receiving chamber and wrapped by the user's lips is defined as a filter tip segment. At an initial stage of heating the aerosol-generating article 40, heating by the first heating member 511 can be controlled as primary heating, that is, a heating temperature of the first heating member 511 is higher than that of the second heating member 512, such that a portion of the substrate segment of the aerosol-generating article 40 near the filter tip segment is heated first. After preset heating time, heating can be adjusted to be primarily performed by the second heating member 512, that is, the heating temperature of the first heating member 511 is lowered while a heating temperature of the second heating member 512 is raised, in which case, a position of the substrate segment of the aerosol-generating article 40 away from the filter tip segment is heated to prevent a temperature near the filter tip segment of the aerosol-generating article 40 from being too high and causing a burn sensation. Preset time and specific heating temperatures can be set according to actual usage requirements, which will not be repeated herein.

[0074] In some embodiments, referring to FIGs. 7-9, the heating structure 50 of the vaporizing heating assembly 200 includes a heat-shrinkable tube 53 and a heating circuit body 54. Heat generated by the heating circuit body 54 is transferred into the receiving chamber through the heating cylinder 21. The heating circuit body 54 has a sleeve-shaped sleeve joint portion 541. Both the sleeve joint portion 541 and the heat-shrinkable tube 53 are sleeved on a periphery of the heating cylinder 21, the sleeve joint portion 541 is sandwiched between the heating cylinder 21 and the heat-shrinkable tube 53. The heat-shrinkable tube 53 is configured to apply fixing force from a circumferential direction of the sleeve joint portion 541 onto the heating circuit body 54 to prevent the heating circuit body 54 from being separated from the heating cylinder 21.

[0075] The heating cylinder 21 is thermally conductive, and heat generated by the heating circuit body 54 after being energized can be transferred to the receiving chamber through the heating cylinder 21, so as to heat the aerosol-generating article 40 located in the receiving chamber. The heating cylinder 21 can be made of a high thermal conductivity material such as aluminum alloy, copper, and aluminum oxide. By fabricating the heating cylinder 21 from the high thermal conductivity material, the thermal performance of the heating cylinder 21 is improved, enabling the heat generated by the heating circuit body 54 to be transferred to the receiving chamber as much as possible, thereby reducing thermal energy loss.

[0076] By configuring the sleeve joint portion 541 of the heating circuit body 54 to be sleeved on the periphery of the heating cylinder 21, the heating circuit body 54 is not connected to the heating cylinder 21 by thick film process, but is pre-fabricated and then sleeved on the periphery of the heating cylinder 21. The heating circuit body 54 is pre-fabricated by a non-thick-film process, which can avoid inconsistent thickness or width of different segments caused by the thick film process, thereby ensuring the overall uniformity of the heating circuit body. In addition, by sleeving the heat-shrinkable tube 53 on the periphery of the heating cylinder 21, the sleeve joint portion 541 is sandwiched between the heating cylinder 21 and the heat-shrinkable tube 53, the heat-shrinkable tube 53 applies the fixing force from the circumferential direction of the sleeve joint portion 541 onto the heating circuit body 54, thereby fixing the heating circuit body 54 and preventing the heating circuit body 54 from being separated from the heating cylinder 21. Therefore, the heating structure 50 provided in this embodiment improves the uniformity of the heating circuit body 54 and ensures the stability of the heating circuit body 54.

[0077] Referring to FIGs. 8 and 9, the heating circuit body 54 further includes an electrical contact pin 542. One end of the electrical contact pin 542 is electrically connected to the sleeve joint portion 541, and the other end thereof is electrically connected to the power supply device 104 through the external lead wire 22, such that the power supply device 104 can supply power to the heating circuit body 54.

[0078] In some embodiments, the heat-shrinkable tube 53 is a heat shrink sleeve made of a polyolefin material. The heat-shrinkable tube 53 is configured to apply fixing force onto the sleeve joint portion 541 when it undergoes shrinkage deformation upon heating. By utilizing the shrinkage property upon heating the heat-shrinkable tube 53, the heating circuit body 54 can be well fixed. In addition, the heat-shrinkable tube 53 also has the functions of softness, flame retardancy, insulation, and corrosion resistance, which provide excellent protection for the heating circuit body 54.

[0079] In some embodiments, a mounting groove is formed on the side wall 211 of the heating cylinder 21, and the sleeve joint portion 541 is mounted in the mounting groove. By mounting the sleeve joint portion 541 in the mounting groove, the stability of the connection between the heating circuit body 54 and the heating cylinder 21 is improved. Of course, in other embodiments, the side wall 211 of the heating cylinder 21 may not be provided with a mounting groove.

[0080] In some embodiments, the heating circuit body 54 includes a set of sub-heating circuit bodies, and the sub-heating circuit bodies can cover the substrate segment of the aerosol-generating article 40. It should be understood that in other embodiments, the heating circuit body 54 may also include at least two sets of sub-heating circuit bodies. In specific implementation, at least two sets of sub-heating circuit bodies can be arranged in the axial direction of heating cylinder 21 or arranged around a circumferential direction of the heating cylinder 21.

[0081] In some embodiments, the heating circuit body 54 is manufactured by laser cutting. The laser cutting process has high precision, and effectively ensures the overall consistency of the circuit. It should be understood that, in other embodiments, the heating circuit body 54 may also be manufactured by stamping or machining.

[0082] In some embodiments, referring to FIGs. 10-15, the vaporizing heating assembly 200 includes a heating structure 50 and a substrate layer 60. The substrate layer 60 is fixed to the side wall 211 between the outward flange 213 and the bottom of the heating cylinder 21, and the heating structure 50 is fixed to the substrate layer 60. The heating structure 50 may be a sheet, a mesh, or a wire structure. Taking the sheet-shaped heating structure 50 as an example, the heating structure 50 may be directly fixed to the outer circumferential surface of the heating cylinder 21 by screen printing. Specifically, the heating cylinder 21 is placed on a rotatable jig, the screen is a sheet structure tightly attached to the side wall 211 of the heating cylinder 21, raw materials of the heating structure 50 on the screen are scraped with a shovel to achieve fixation of the heating structure 50. However, due to the structural design of the outward flange 213, it is impossible to attach the screen onto the heating cylinder 21, and it is also impossible to fix the heating structure 50 directly onto an outer side wall of the heating cylinder 21. In order to solve the problems, in this embodiment, the heating structure 50 may be fixed to the substrate layer 60, and the substrate layer 60 is fixed to the outer side wall of the heating cylinder 21. For example, the heating structure 50 is fixed to the substrate layer 60 by thick-film printing, and then the substrate layer 60 fixed with the heating structure 50 is sintered and fixed to the outer side wall of the heating cylinder 21, thereby indirectly fixing the heating structure 50 to the heating cylinder 21 and reducing the difficulty of fixing the heating structure 50 to the heating cylinder 20.

[0083] The substrate layer 60 is made of a material suitable for tape casting process and has certain thermal conductivity. For example, the substrate layer 60 may be metal, ceramic, and the like. The substrate layer 60 is a sheet manufactured by the tape casting process. In this way, the produced substrate layer 60 has certain flexibility. For example, as shown in FIGs. 11-13, the substrate layer 60 in an unfolded state is a rectangular sheet layer, which can be deformed by its own flexibility to be easily adhered and fixed to the outer side wall of the heating cylinder 21 to form a columnar substrate layer 60, for example, the substrate layer 60 shown in FIG. 10.

[0084] The thinner the substrate layer 60, the better the thermal conduction rate and thermal uniformity of the substrate layer 60. Specifically, a thickness of the substrate layer 60 is 25 µm-500 µm.

[0085] The aerosol-generating article 40 can be divided into various categories according to different usage requirements. Based on the difficulty of aerosol generation, it can be generally divided into two categories. One category is aerosol-generating article that is easy to generate aerosol, and the aerosol-generating article only needs slight heating to rapidly generate aerosol. The other category is aerosol-generating article that is difficult to generate aerosol and require relatively more heat to generate aerosol. The vaporizing heating assembly 200 in the present disclosure is suitable for the aerosol-generating article that is difficult to generate aerosol.

[0086] For the aerosol-generating article 40 that is difficult to generate aerosol, a larger heating area is required. Therefore, the existing vaporizing heating assembly 200 needs to heat the entire aerosol-generating article 40 in contact with it. However, since only one heating structure 50 is used, only one heating mode is available for the aerosol-generating article 40, it is impossible to provide corresponding heat according to needs of the aerosol-generating article 40 in different time periods, which is inconvenient for flexible control. Moreover, due to an integrated heating method, more heat needs to be provided for the aerosol-generating article 40, which is easy to cause the problem of burning mouth, especially during the initial heating of the aerosol-generating article 40.

[0087] In one embodiment, the heating structure 50 includes a first heating element 61 and a second heating element 62 that are connected in parallel. The heating cylinder 21 is fixed with the first heating element 61 and the second heating element 62 connected in parallel through the substrate layer 60. The first heating element 61 and the second heating element 62 are two relatively independent heating elements, which facilitates flexible control of the heating structure 50, solves the problem of burning mouth when the vaporizing heating assembly 200 heats the aerosol-generating article 40, and can also provide more heating modes for the aerosol-generating article 40. Specifically, when the vaporizing heating assembly 200 heats the aerosol-generating article 40 in the heating cylinder 21, the first heating element 61 and the second heating element 62 can work synchronously or asynchronously. For example, when the first heating element 61 is working, the second heating element 62 is not working; or when the second heating element 62 is working, the first heating element 61 is not working; alternatively, the first heating element 61 and the second heating element 62 can work simultaneously. The specific working mode of the first heating element 61 and the second heating element 62 is not limited herein, and can be flexibly combined according to the actual heat demand of the aerosol-generating article 40, as long as the heat supplied by the heating structure 50 to the aerosol-generating article 40 does not cause the problem of burning mouth.

[0088] Referring to FIGs. 14 and 15, specifically, the first heating element 61 and the second heating element 62 are respectively indirectly fixed to the heating cylinder 21 in the axial direction of the heating cylinder 21, thereby enabling heating of different axial segments of the aerosol-generating article 40. Taking the first heating element 61 near the opening end 214 of the heating cylinder 21, and the second heating element 62 near the bottom wall 212 of the heating cylinder 21 as an example, when the aerosol-generating article 40 is heated, the first heating element 61 may be operated first, or the first heating element 61 may operate as the primary heating element, so as to give priority to heating the substrate segment near a top of the aerosol-generating article 40, to release the aerosol quickly, and to appropriately reduce the heat provided by the vaporizing heating assembly 200 to the aerosol-generating article 40 to avoid the problem of burning mouth. After the aerosol-generating article 40 is heated for a period of time, only the second heating element 62 is allowed to work or the second heating element 62 may operate as the primary heating element to heat the aerosol-generating article 40, such that the aerosol-generating article 40 can continuously release the aerosol. When the first heating element 61 operates as the primary heating element, the second heating element 62 operates as a supplementary heating element, heat generated by the second heating element 62 needs to be lower than heat generated by the first heating element 61. Similarly, when the second heating element 62 operates as the primary heating element, the first heating element 61 operates as a supplementary heating element, heat generated by the first heating element 61 needs to be lower than heat generated by the second heating element 62.

[0089] The first heating element 61 forms at least one layer of first heating ring 611 in a circumferential direction of the heating cylinder 21, and the first heating element 61 realizes a serial connection of adjacent layers of the first heating ring 611 by bending. The second heating element 62 forms at least one layer of second heating ring 621 in a circumferential direction of the heating cylinder 21, and the second heating element 62 realizes a serial connection of adjacent layers of the second heating ring 621 by bending.

[0090] When the first heating element 61 forms the first heating ring 611 in the circumferential direction of the heating cylinder 21, and the second heating element 62 forms the second heating ring 621 in the circumferential direction of the heating cylinder 21, the heating structure 50 can provide a relatively uniform heating effect on the outer circumferential surface of the aerosol-generating article 40 at a same axial position. More specifically, a length direction of the first heating ring 611 on a same layer is perpendicular to the axial direction of the heating cylinder 21, and a length direction of the second heating ring 621 in a same layer is also perpendicular to the axial direction of the heating cylinder 21, such that it is easy to ensure that the heating structure 50 can provides a more uniform heating effect to a circumferential surface of the aerosol-generating article 40 at the same axial position. Taking FIG. 11 as an example, FIG. 11 mainly illustrates a detailed structure of the heating structure 50 on the substrate layer 60 in the unfolded state, where the length directions of both the first heating ring 611 and the second heating ring 621 refer to a horizontal direction, and the axial direction of the heating cylinder 21 refers to a vertical direction.

[0091] Of course, in other embodiments, taking the first heating element 61 as an example, the first heating element 61 may also be fixed to the circumferential surface of the heating cylinder 21 in a spiral shape. However, in this case, some positions of the circumferential surface of the aerosol-generating article 40 at the same axial position are correspondingly provided with the first heating element 61, while other positions are not provided with the first heating element 61, that is, the heating structure 50 cannot provide a uniform heating effect on the circumferential surface of the aerosol-generating article 40 at the same axial position.

[0092] Referring to FIG. 11, specifically, in some embodiments, the first heating element 61 forms two layers of the first heating rings 611, and the second heating element 62 forms two layers of the second heating rings 621. The first heating ring 611 located near the second heating element 62, and the second heating ring 621 located near the first heating element 61 are both semi-annular structures; and the two semi-annular structures form one layer of heating ring, that is, the first heating rings 611 and the second heating rings 621 together form three layers of heating rings. Further, that is, the first heating element 61 and the second heating element 62 each form 1.5 turns of heating rings on the circumferential surface of the heating cylinder 21. The first heating element 61 and the second heating element 62 are obliquely symmetrically distributed on the circumferential surface of the heating cylinder 21. For example, in FIG. 11, the first heating element 61 is distributed in an upper oblique segment near an upper right corner of the circumferential surface of the heating cylinder 21, and the second heating element 62 is distributed in a lower oblique segment near a lower left corner of the circumferential surface of the heating cylinder 21. When the first heating rings 611 and the second heating rings 621 each form 1.5 rings of heating rings, the circumferential surface of the substrate layer 60 in FIG. 11 is unfolded into a rectangular shape (an unfolded shape of the outer circumferential surface of the heating cylinder 21 is also rectangular or approximately rectangular). Lengths of the heating rings in the same layer is approximately equal to the length of the circumferential surface of the heating cylinder 21, such that the heating rings in the same layer form an approximate ring shape on a cylindrical surface of the heating cylinder 21 that is folded. When the heating ring in the same layer is formed by a combination of a portion of the first heating ring 611 and a portion of the second heating ring 621, the lengths of the heating rings in the same layer refers to a sum of the lengths of the first heating ring 611 and the second heating ring 621 on the layer.

[0093] In other embodiments, when the first heating element 61 and the second heating element 62 form three layers of heating rings on the heating cylinder 21, other proportions may also be adopted. For example, the first heating element 61 forms 1.4 rings of heating rings on the heating cylinder 21, and the second heating element 62 forms 1.6 rings of heating rings on the heating cylinder 21. Alternatively, in other embodiments, for example, as shown in FIG. 12, the first heating element 61 forms two rings of the first heating rings 611 on the heating cylinder 21, and the second heating element 62 forms two rings of the second heating rings 621 on the heating cylinder 21. Further alternatively, in other embodiments, for example, as shown in FIG. 13, the first heating element 61 forms one ring of the first heating ring 611 on the heating cylinder 21, and the second heating element 62 forms two rings of the second heating rings 621 on the heating cylinder 21. A number of rings or turns formed by the first heating ring 611 and the second heating ring 621 is not exhaustively listed herein, and may be flexibly selected according to actual heating requirements. When the first heating element 61 and the second heating element 62 form full-circle heating rings, uniform energy distribution can be provided at different circumferential surfaces of the aerosol-generating article 40 located at the same axial position, thereby providing a uniform heating effect on the aerosol-generating article 40 at the same axial position.

[0094] In some embodiments, referring to FIGs. 11-13, ends of the first heating element 61 and the second heating element 62 that are far away from each other are respectively provided with a connecting electrode 63, and a common electrode 64 is arranged between ends of the first heating element 61 and the second heating element 62 that are close to each other. The connecting electrode 63 is configured to be electrically connected to one of positive electrode or negative electrode of the power supply device 104, and the common electrode 64 is configured to be electrically connected to the other of positive electrode or negative electrode of the power supply device 104. By introducing the common electrode 64 between the first heating element 61 and the second heating element 62 connected in parallel, a circuit connection of the vaporizing heating assembly 200 is simplified.

[0095] Preferably, a resistance value of the first heating element 61 is equal to or approximately equal to a resistance value of the second heating element 62. When a resistance value of the first heating element 61 is equal to or approximately equal to a resistance value of the second heating element 62, it is convenient to heat the aerosol-generating article 40 and provide uniform energy distribution, as well as perform flexible control of the heating structure 50.

[0096] In some embodiments, corresponding to the embodiments shown in FIGs. 10-15, a thermal conductivity of the heating cylinder 21 is not less than 10 W / (m·K), such that the heating cylinder 21 can evenly transfer the heat generated by the heating structure 50. The heating cylinder 21 may be made of, for example, aluminum alloy, copper, aluminum nitride, or the like.

[0097] In some embodiments, referring to FIG. 16, the vaporizing heating assembly 200 heats the aerosol-generating article 40 using electromagnetic induction heating. The vaporizing heating assembly 200 includes a mounting base 11, the heating cylinder 21 is mounted on the mounting base 11, a closed end 215 of the heating cylinder 21 in the extension direction is suspended inside the mounting base 11, and spaced apart from the mounting base 11. The vaporizing heating assembly 200 further includes a coil 71, and the coil 71 is located on a side of the closed end 215 of the heating cylinder 21 away from the receiving chamber in the extension direction of the heating cylinder 21. The coil 71 includes an inner coil and an outer coil, a winding size of the inner coil is smaller than a winding size of the outer coil. The coil 71 is configured to generate an alternating magnetic field, and the heating cylinder 21 is configured to be inductively coupled to the coil 71 to generate heat in the alternating magnetic field. In this way, electromagnetic induction heating is adopted, it is thus unnecessary to arrange an external lead wire 22 on the heating cylinder 21, which can avoid an increase of energy loss caused by current transmission through the external lead wire 22, thereby helping to reduce the energy consumption of the vaporizing heating assembly 200.

[0098] In one embodiment, the coil 71 may be installed on an end face of the closed end 215 of the heating cylinder 21 by a snap-fit structure. The coil 71 is coated with an insulating layer on the outside, or a portion of the heating cylinder 21 in contact with the coil 71 is made of an insulating material, which helps reduce a distance between the heating cylinder 21 and the coil 71, and helps improve the efficiency of converting magnetic field energy into electrical energy under the condition of achieving a same heating temperature, thereby reducing the overall energy consumption of the vaporizing heating assembly 200.

[0099] In one embodiment, referring to FIG. 16, the coil 71 may also be spaced apart from the heating cylinder 21 in the extension direction of the heating cylinder 21. For example, the mounting base 11 may be provided with a support surface perpendicular to the extension direction of the heating cylinder 21. The support surface may be an end face of the plug 15 facing the sealing member 12, or a bottom wall surface of the heat-heat-insulating cylinder 14. The coil 71 can be supported and installed on the support surface of the mounting base 11 to achieve fixation and installation of the coil 71 in the mounting base 11; or in other embodiments, the coil 71 may be adhered to the end face of the closed end 215 of the heating cylinder 21 through an adhesive layer with a certain thickness, such that the coil 71 is spaced apart from the end face of the closed end 215, the heating cylinder 21 with conductive property is insulated from the coil 71, there is no need to introduce an insulating layer on the coil 71 or the heating cylinder 21 to insulate the coil 71 from the heating cylinder 21. This can also reduce a distance between the heating cylinder 21 and the coil 71, improving the efficiency of converting magnetic field energy into electrical energy.

[0100] In one embodiment, referring to FIGs. 17-18, the coil 71 is wound and arranged in a plane perpendicular to the extension direction of the heating cylinder 21. The coil 71 is a planar coil structure. The coil 71 may be a circular coil structure or, in other embodiments, a polygonal or elliptical structure. The coil 71 has an inner coil and an outer coil. In the circular coil structure, a winding radius of the inner coil is smaller than a winding radius of the outer coil. For other coil structures, winding dimensions of the inner coil are smaller than winding dimensions of the outer coil.

[0101] In other embodiments, in order to adapt to the structure of the support surface on the mounting base 11, the coil 71 may also be formed as a conical structure, and the inner coil and the outer coil may be spaced apart in the extension direction of the heating cylinder 21.

[0102] In one embodiment, a winding wire of coil 71 may have a circular cross section. In other embodiments, the winding wire may be a flat strip wire, which is wound in a thickness direction to form a structure of the entire coil 71.

[0103] In some embodiments, referring to FIG. 16, the heating cylinder 21 is arranged with a gap relative to the inner wall of the heat-insulating cylinder 14, such that the heat-insulating cylinder 14, the sealing member 12, the plug 15, and the heating cylinder 21 enclose in the cavity to form a heat-insulating cavity 33 surrounding the heating cylinder 21. The coil 71 is located in the heat-insulating cavity 33, the plug 15 forms a support surface facing an end face of the heating cylinder 21 in the extension direction of heating cylinder 21 to support the coil 71. The plug 15 is provided with a wire-through hole (not shown in the figure), the coil 71 can be electrically connected to the power supply device 104 through a lead wire passing through the wire-through hole (not shown in the figure), thereby facilitating the installation of the coil 71 in the vaporizing heating assembly 200.

[0104] In another embodiment, the heat-insulating cylinder 14 may be configured as a structure with one end open and the other closed, the mounting base 11 is not provided with the plug 15, and the heat-insulating cylinder 14, the sealing member 12, and the heating cylinder 21 enclose to form a heat-insulating cavity 33. The heat-insulating cylinder 14 has a side cylinder wall arranged surrounding the heating cylinder 21, and a bottom cylinder wall spaced apart from the heating cylinder 21 in the extension direction of the heating cylinder 21, and an inner wall surface of the bottom cylinder wall may form a support surface for supporting the coil 71.

[0105] In some other embodiments, the coil 71 may be arranged outside the heat-insulating cavity 33. For example, the coil 71 may be installed on the plug 15 by adhesive bonding or through a snap-fit connection, or connected to an outer side surface of the bottom wall of the heat-insulating cylinder 14. The heat-insulating cylinder 14 or the plug 15 is made of a plastic material to prevent the heat-insulating cylinder 14 or the plug 15 from affecting the alternating magnetic field generated when coil 71 is energized. In addition, placing the coil 71 outside the heat-insulating cavity 33 can avoid the need to form a wire-through hole in the cavity wall of the heat-insulating cavity 33, which helps ensure the sealing performance of the heat-insulating cavity 33, thereby further reducing heat loss and energy consumption.

[0106] In some embodiments, for the vaporizing heating assembly 200 using electromagnetic induction heating, at least part of the heating cylinder 21 is made of a magnetic material. The magnetic material includes SUS430 or SPCE (cold-rolled carbon steel for deep drawing) capable of generating heat in an alternating magnetic field. For example, the side wall 211 of the heating cylinder 21 may contain the magnetic material, or the bottom wall 212 of the heating cylinder 21 may contain the magnetic material, or the entire heating cylinder 21 may be made of the magnetic material. In this way, after the coil 71 is energized, part or all of the heating cylinder 21 made of the magnetic material can generate heat in the alternating magnetic field to heat the aerosol-generating article 40.

[0107] In the above embodiments, after being energized, the coil 71 can generate an alternating magnetic field, and the heating cylinder 21 generates heat in the alternating magnetic field to heat the gas flow and the aerosol-generating article 40. Since the coil 71 is located on a side of the heating cylinder 21 opposite the bottom wall 212 of the heating cylinder 21 in the extension direction of the heating cylinder 21, a distance between the coil 71 and the bottom wall 212 of the heating cylinder 21 is smaller than a distance between the coil 71 and the side wall 211 of the heating cylinder 21, such that a heating temperature of the bottom wall 212 of the heating cylinder 21 is higher than a heating temperature of the side wall 211. Therefore, the bottom wall 212 of the heating cylinder 21 serves as a primary heating part, and the side wall 211 of the heating cylinder 21 serves as an auxiliary heating part. In this way, the heat on the heating cylinder 21 is mainly concentrated at the bottom of the heating cylinder 21, which can reduce heat transfer in the extension direction of the heating cylinder 21 toward the aerosol outlet 102, thereby improving the heat utilization rate of the vaporizing heating assembly 200.

[0108] In another embodiment, the heating cylinder 21 may be made of a thermally conductive ceramic material. The heating structure 50 includes a heating element fixed to the bottom wall 212 of the heating cylinder 21 and / or the side wall 211 of the heating cylinder 21. The heating element is made of the magnetic material, and the heating element is capable of generating heat in an alternating magnetic field. Heat generated by the heating element can be directly transferred to the gas flow in the gas intake channel 31 and the gas intake chamber 32, or the heat generated by the heating element can be transferred to the gas flow in the gas intake channel 31 and the gas intake chamber 32 through the heating cylinder 21 to realize heating of the gas flow. Further, the heat generated by the heating element can be transferred to the aerosol-generating article 40 through the heating cylinder 21 to achieve heating of the aerosol-generating article 40.

[0109] In some embodiments, referring to FIG. 19, for the vaporizing heating assembly 200, the heating cylinder 21 is located in the heat-insulating cylinder 14 and is connected to the heat-insulating cylinder 14. The closed end 215 of the heating cylinder 21 is suspended inside the heat-insulating cylinder 14 and spaced apart from a cylinder wall of the heat-insulating cylinder 14. The vaporizing heating assembly 200 further includes a coil winding 81, and the coil winding 81 is disposed outside the heat-insulating cylinder 14. An axis of the coil winding 81 is arranged in the extension direction of the heating cylinder 21, and the coil winding 81 is configured to generate an alternating magnetic field that causes the heating cylinder 21 to heat up.

[0110] In some embodiments, still referring to FIG. 19, for the vaporizing heating assembly 200, the heat-insulating cylinder 14 is a cylindrical structure with both ends open in the extension direction of the heating cylinder 21. The sealing member 12 and the plug 15 of the vaporizing heating assembly 200 are sealingly engaged with the two opening ends of the heat-insulating cylinder 14, respectively. The plug 15 is located on a side of the sealing member 12 opposite to the aerosol outlet 102 of the device main device body 100 in the extension direction of the heating cylinder 21, and gas flow can pass through a gap between a channel wall of the communication channel 121 in the sealing member 12 and the aerosol-generating article 40, and enter the receiving chamber.

[0111] In another embodiment, the heat-insulating cylinder 14 may be a cylindrical structure with one end open and the other end closed in the extension direction of the heating cylinder 21. The heat-insulating cylinder 14 includes a side cylinder wall and a bottom cylinder wall, the bottom cylinder wall is located at the closed end of the heat-insulating cylinder 14 in the extension direction of the heating cylinder 21. The mounting base 11 only includes the sealing member 12 and the heat-insulating cylinder 14, and the sealing member 12 is sealingly installed at the opening end 214 of the heat-insulating cylinder 14.

[0112] The heating cylinder 21 is located in the heat-insulating cylinder 14. The outward flange 213 on the heating cylinder 21 is clamped and fixed between the sealing member 12 and a support arm 141 of the heat-insulating cylinder 14 in the extension direction of the heating cylinder 21. The side wall 211 and the closed end 215 of the heating cylinder 21 are both spaced apart from the cylinder wall of the heat-insulating cylinder 14, thereby forming a heat-insulating cavity 33 surrounding the heating cylinder 21 between the heat-insulating cylinder 14 and the heating cylinder 21. First, the structure of arranging the heat-insulating cavity 33 outside the heating cylinder 21 can reduce the heat loss of the heating cylinder 21, thereby improving the heat utilization rate of the vaporizing heating assembly 200 and reducing the energy consumption of the heat-not-burn device. Moreover, the structure of suspending the suspending end of the heating cylinder 21 inside the heat-insulating cavity 33 reduces heat transfer from the heating cylinder 21 in the extension direction away from the aerosol outlet 102 toward the vaporizing heating assembly 200 or the device main device body 100, which can further reduce heat loss of the heating cylinder 21, improve the heat utilization rate of the vaporizing heating assembly 200, and reduce energy consumption of the heat-not-burn device.

[0113] In some embodiments, the coil winding 81 of the vaporizing heating assembly 200 is disposed outside the heat-insulating cylinder 14. An axis of the coil winding 81 is arranged in the extension direction of the heating cylinder 21, and when being energized, the coil winding 81can generate an alternating magnetic field that causes the heating cylinder 21 to heat up. In this way, the aerosol-generating article 40 can be heated using the electromagnetic induction heating, it is possible to avoid a lead wire arranged on the heating cylinder 21 and extending in a direction away from the sealing member 12 in the extension direction of the heating cylinder 21, thereby preventing the heat loss caused by heat conduction along the lead wire on the heating cylinder 21, and avoiding energy consumption caused by current flowing through the lead wire. As a result, the heat utilization rate of the heating cylinder 21 and the entire vaporizing heating assembly 200 is improved, thereby reducing the energy consumption of the heat-not-burn device. Furthermore, by arranging the coil winding 81 outside the heat-insulating cylinder 14, the coil winding 81 is provided with the lead wire electrically connected to the power supply device 104 in the device main device body 100, which can prevent the lead wire from passing through the cavity wall of the heat-insulating cavity 33, thereby ensuring the sealing performance of the heat-insulating cavity 33 and avoiding heat loss caused by gas flow in the heat-insulating cavity 33, further improving the heat utilization rate of the vaporizing heating assembly 200 and reducing the energy consumption of the heat-not-burn device.

[0114] In one embodiment, still referring to FIG. 19, the coil winding 81 can be fixed to the side cylinder wall of the heat-insulating cylinder 14 by adhesive bonding or through a snap-fit connection. The coil winding 81 is coaxially arranged with the heat-insulating cylinder 14, facilitating assembly of the coil winding 81 in the vaporizing heating assembly 200.

[0115] In another embodiment, the coil winding 81 is located outside the heat-insulating cylinder 14, and the axis of the coil winding 81 may be arranged either parallel to or coaxially with an axis of the heat-insulating cylinder 14. For example, the device body 100 has a bracket for fixing the vaporizing heating assembly 200, and the coil winding 81 may be wound around the bracket.

[0116] In one embodiment, still referring to FIG. 19, the coil winding 81 is arranged around the heat-insulating cylinder 14. The coil winding 81 is formed by winding a wire with a circular cross section, or alternatively by winding a flat wire with a rectangular cross section. The coil winding 81 includes a plurality of coil units 811 arranged in the extension direction of the heating cylinder 21. Each coil unit 811 surrounds the heat-insulating cylinder 14 once. The plurality of coil units 811 arranged in the extension direction of the heating cylinder 21 are connected end to end in sequence. Wire length and winding dimensions or winding radius of each coil unit 811 are equal, thereby facilitating the winding and molding of the coil winding 81.

[0117] In some other embodiments, the device body 100 has a bracket for fixing the vaporizing heating assembly 200, and the coil winding 81 is wound around the bracket. The wire length and winding dimensions of the plurality of coil units 811 in the coil winding 81 may vary according to a shape of an outer surface of the bracket that contacts the coil winding 81. For example, the wire length and winding dimensions of the plurality of coil units 811 in the coil winding 81 may gradually decrease or increase from the receiving chamber toward the communication channel 121 in the extension direction of the heating cylinder 21, or may gradually increase first and then gradually decrease.

[0118] In one embodiment, the coil winding 81 further includes a plurality of coil segments arranged in the extension direction of the heating cylinder 21. Each coil segment may include one or more coil units 811. Two adjacent coil segments are spaced apart in the extension direction of the heating cylinder 21, and each coil segment has external connecting terminal electrically connected to the power supply device 104 in the device body 100. The power supply device 104 can be configured to control each coil segment to be energized separately, enabling separate heating of different regions of the heating cylinder 21 in the extension direction thereof. This configuration allows segmented heating of the aerosol-generating article 40, such as controlling the heating of coil segments in sequence from the receiving chamber toward the communication channel 121 in the extension direction of the heating cylinder 21, thereby ensuring continuity of the aerosol generated after the aerosol-generating article 40 is heated.

[0119] In another embodiment, the coil winding 81 may be provided with only one pair of external connecting terminals electrically connected to the power supply device 104, thereby satisfying overall heating of the heating cylinder 21.

[0120] In some embodiments, the heating cylinder 21 generates heat under the action of an alternating magnetic field. At least a portion of the heating cylinder 21 may be made of the magnetic material, for example, the entire heating cylinder 21 may be made of SUS430 or SPCE (cold-rolled carbon steel for deep drawing), or other materials capable of generating heat under the action of the alternating magnetic field, enabling the entire heating cylinder 21 to heat under the action of the alternating magnetic field. Alternatively, only the side wall 211 of the heating cylinder 21 may be made of the magnetic material, such that only the side wall 211 of the heating cylinder 21 generates heat under the action of the alternating magnetic field.

[0121] In some other embodiments, a heating element may be fixed to the side wall 211 of the heating cylinder 21. The heating element may include a heating wire or a heating film, and the heating element is fixed to the side wall 211 of the heating cylinder 21 by adhesive bonding. The heating element is made of the magnetic material, and is capable of generating heat under the action of an alternating magnetic field.

[0122] In the embodiment where the heating cylinder 21 serves as the heating element, referring to FIG. 19, a position of the coil winding 81 in the extension direction of the heating cylinder 21 corresponds to a position of the heating cylinder 21 in its extension direction, that is, the coil winding 81 is located radially outside the heating cylinder 21, and the coil units 811 in the coil winding 81 are uniformly distributed outside the heating cylinder 21 in the extension direction of the heating cylinder 21, such that the side wall 211 of the heating cylinder 21 is located in a position with a relatively strong magnetic field intensity in the coil winding 81, the side wall 211 of the heating cylinder 21 forms a primary heating part of the heating cylinder 21, and the bottom wall 212 of the heating cylinder 21 forms a secondary heating part. On the one hand, the configuration can not only ensure that the side wall 211 of the heating cylinder 21 can reach a relatively high temperature under the action of the alternating magnetic field. On the other hand, the side wall 211 of the heating cylinder 21 can heat the substrate segment of the aerosol-generating article 40 near the filter tip portion, so as to shorten aerosol generation time and waiting time for the user, thereby improving the user experience.

[0123] In one embodiment, still referring to FIG. 19, the side wall 211 of the heating cylinder 21 is arranged around the receiving chamber, and may be disposed in the extension direction of the heating cylinder 21. Dimensions of the side wall 211 of the heating cylinder 21 are less than or equal to dimensions of the coil winding 81 in the extension direction of the heating cylinder 21, which helps reduce a temperature difference of the side wall 211 of the heating cylinder 21 in the extension direction of the heating cylinder 21, improve a temperature uniformity of the side wall 211 of the heating cylinder 21, and enhance the heating uniformity of the aerosol-generating article 40. Of course, in other embodiments, it is also possible that the dimensions of the side wall 211 of the heating cylinder 21 in the extension direction of the heating cylinder 21 are greater than the dimensions of the coil winding 81 in the extension direction of the heating cylinder 21.

[0124] For example, an end of the coil winding 81 near the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21 corresponds to and is flush with the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21, an end of the coil winding 81 near the closed end 215 of the heating cylinder 21 in the extension direction of the heating cylinder 21 is located on a side of the closed end 215 of the heating cylinder 21 away from the receiving chamber, or the end of the coil winding 81 near the closed end 215 of the heating cylinder 21 in the extension direction of the heating cylinder 21 corresponds to or is flush with an end of the side wall 211 of the heating cylinder 21 connected to the bottom wall 212 in the extension direction of heating cylinder 21, this configuration ensures that the side wall 211 of the heating cylinder 21 is located in a position with a relatively strong magnetic field intensity in the coil winding 81, and satisfies the dimension requirements of the side wall 211 of the heating cylinder 21 and the coil winding 81 in the extension direction of the heating cylinder 21. The structures of the coil winding 81 and the heating cylinder 21 can improve the conversion efficiency of electrical energy in the coil winding 81 and thermal energy in the heating cylinder 21.

[0125] An embodiment of the present disclosure also provides a heat-not-burn device. Referring to FIGS. 1-4, 16, and 19, the heat-not-burn device includes a device body 100 and the vaporizing heating assembly 200 described in any of the above embodiments. The device body 100 has an aerosol outlet 102, the aerosol outlet 102 is in fluid communication with the receiving chamber through the communication channel 121 of the vaporizing heating assembly 200. An aerosol-generating article 40 can be inserted into the receiving chamber from the aerosol outlet 102 along the communication channel 121. The aerosol outlet 102 can also discharge the aerosol generated after the aerosol-generating article 40 is heated.

[0126] The device body 100 includes a housing 101, a mounting chamber is formed inside the housing, the aerosol outlet 102 is formed on the housing 101, and a mounting base 11 may be clamped and fixed in the mounting chamber in the extension direction of the heating cylinder 21 to achieve installation and positioning of the vaporizing heating assembly 200 in the device body 100, and also to ensure that the communication channel 121 is coaxial with the aerosol outlet 102.

[0127] An installation space inside the housing 101 includes a vaporizing chamber. The vaporizing heating assembly 200 is located in the vaporizing chamber, and the vaporizing heating assembly 200 is supported by a bracket inside the housing 101 to achieve assembly and fixation of the vaporizing heating assembly 200.

[0128] The device body 100 of the heat-not-burn device further includes a power supply device 104 located in the mounting chamber. The power supply device 104 is electrically connected to the vaporizing heating assembly 200 through an external lead wire 22, so as to supply power to the vaporizing heating assembly 200 through the power supply device 104. An electrical cavity may also be separately formed in the housing 101 for installing the power supply device 104.

[0129] The above embodiments are merely illustrative of the present disclosure and are intended to help understand the present disclosure but should not be construed as limiting the present disclosure. Those skilled in the art to which the present disclosure belongs can make several simple deductions, variations or substitutions according to the ideas of the present disclosure.

Examples

Embodiment Construction

[0028]The present disclosure will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are labeled with associated similar element labels. In the following embodiments, more details are described to facilitate clearer understanding of the present disclosure. However, those skilled in the art can readily recognize that some of the features can be omitted in different cases, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present disclosure are not shown or described in the specification, with the aim of preventing the important part of the present disclosure from being overwhelmed by excessive description, and for those skilled in the art, it is unnecessary to describe these related operations in detail, and they can gain a thorough understanding of the related operations according to the description in the specification and the gener...

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to the following Chinese patent applications, and the entirety of each of the following patent applications is hereby incorporated by reference herein: the Chinese Patent Application No.: 2024219046010, filed on August 7, 2024, and titled Heat-Not-Burn Device and Heat-Not-Burn System; the Chinese Patent Application No.: 2024221315195, filed on August 30, 2024, and titled Vaporizing Heating Structure and Heat-Not-Burn Vaporizer; the Chinese Patent Application No.: 2024223319909, filed on September 24, 2024, and titled Heating Device, Vaporizing Apparatus and Electronic Vaporizer; the Chinese Patent Application No.: 2024221240574, filed on August 30, 2024, titled Heating Element, Vaporizing Device and Vaporizing Apparatus; the Chinese Patent Application No.: 2024226355714, filed on October 30, 2024, titled Vaporizing Device and Vaporizing Apparatus; the Chinese Patent Application No.: 2024228398362, filed on November 20, 2024, titled Atomizing Assembly and Heat-Not-Burn Device; and the Chinese Patent Application No.: 2024228449218, filed on November 20, 2024, titled Atomizing Assembly and Heat-Not-Burn Apparatus. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of heat-not-burn devices, and in particular to a vaporizing heating assembly and a heat-not-burn device.BACKGROUND ART

[0003] A heat-not-burn device usually includes a vaporizing heating assembly. The vaporizing heating assembly has a receiving chamber, and an aerosol-generating article is inserted into the receiving chamber. The vaporizing heating assembly is in contact with the aerosol-generating article to heat it through direct contact to generate aerosol.

[0004] In the prior art, hot gas flow is used to improve the heating uniformity of the aerosol-generating article. External cold air enters the heat-not-burn device through a gas intake, and is heated by the vaporizing heating assembly to form the hot gas flow, which then enters the aerosol-generating article from a bottom of the receiving chamber. After heating, the aerosol-generating article generates aerosol, which flows out through an aerosol outlet. The vaporizing heating assembly is usually installed at a bottom of the aerosol-generating article. Heat generated by the vaporizing heating assembly is transferred upward or downward in the heat-not-burn device. A large portion of the heat transferred downward cannot be utilized by the aerosol-generating article, resulting in significant heat loss in the heat-not-burn device.SUMMARY OF THE DISCLOSURE

[0005] The present disclosure provides a vaporizing heating assembly and a heat-not-burn device, so as to solve the technical problems of significant heat loss in existing heat-not-burn devices.

[0006] According to one aspect of the present disclosure, an embodiment of the present disclosure provides a vaporizing heating assembly, which includes a heating cylinder having one end open and the other end closed, a side wall and a bottom wall of the heating cylinder enclose to form a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article; a support protruding portion facing the receiving chamber is arranged on the bottom wall and / or the side wall; and the support protruding portion is configured to support the aerosol-generating article, thereby forming a gas intake chamber between the aerosol-generating article and the bottom wall; and the side wall is provided with a contact protruding portion and a recessed portion; and the contact protruding portion is arranged facing the receiving chamber, the contact protruding portion is configured to be in heat-conducting contact with an outer circumferential surface of the aerosol-generating article, and the recessed portion is configured to form a gas intake channel together with the outer circumferential surface of the aerosol-generating article, and an aerosol outlet is in fluid communication with the gas intake chamber through the gas intake channel.

[0007] In some embodiments, the contact protruding portion includes a contact rib, the contact rib extends in an axial direction of the heating cylinder, a plurality of the contact ribs are provided, two adjacent contact ribs are spaced apart in a circumferential direction of the heating cylinder, one recessed portion is formed between the two adjacent contact ribs, and the gas intake channels extend in the axial direction of the heating cylinder.

[0008] In some embodiments, each support protruding portion includes a support rib, a plurality of the support ribs are provided, a communication gap is formed between two adjacent support ribs, and the gas intake channels are in fluid communication with the gas intake chamber through the communication gap.

[0009] In some embodiments, the vaporizing heating assembly includes a mounting base, the heating cylinder is suspended inside the mounting base, an outward flange is disposed at an opening end of the heating cylinder away from the receiving chamber, and the outward flange abuts against the mounting base in the axial direction of the heating cylinder.

[0010] In some embodiment, the mounting base includes a heat-insulating cylinder and a sealing member, the heating cylinder is located in the heat-insulating cylinder and is coaxially arranged with the heat-insulating cylinder, the side wall of the heating cylinder is spaced apart from the heat-insulating cylinder, the sealing member is sealingly engaged with an opening of the heat-insulating cylinder, and the sealing member has a communication channel that is in fluid communication with the receiving chamber; and a support portion extending toward the heating cylinder is disposed on a cylindrical wall of the heat-insulating cylinder, and the outward flange is clamped between the support portion and the sealing member in an extension direction of the heating cylinder.

[0011] In some embodiments, the heating cylinder is formed of a conductive ceramic structure, and a positive electrode connection portion and a negative electrode connection portion configured to be connected to an external lead wire are arranged on an outer circumferential surface of the heating cylinder.

[0012] In some embodiments, the vaporizing heating assembly further includes a heating structure and a substrate layer, an outward flange protruding in a radial direction of the heating cylinder is disposed at an opening end of the heating cylinder, the substrate layer is fixed to the side wall of the heating cylinder between the outward flange and a cylinder bottom of the heating cylinder, and the heating structure is fixed to the substrate layer.

[0013] In some embodiments, the heating structure includes a first heating member and a second heating member that are connected in parallel, and the first heating member and the second heating member are respectively fixed to the substrate layer in an extension direction of the heating cylinder; and the first heating member forms at least one layer of first heating ring in a circumferential direction of the heating cylinder, and the second heating member forms at least one layer of second heating ring in the circumferential direction of the heating cylinder.

[0014] In some embodiments, the vaporizing heating assembly further includes a heating structure; the heating structure is located outside the heating cylinder and fixed to the side wall; the heating structure is configured to heat the heating cylinder, thereby radiating infrared rays into the receiving chamber and heating the gas flowing through the gas intake channels to generate hot gas flow, which can heat the aerosol-generating article inserted into the receiving chamber by both the infrared rays and the hot gas flow.

[0015] In some embodiments, the vaporizing heating assembly further includes a heating structure; the heating structure includes a heat-shrinkable tube and a heating circuit body; heat generated by the heating circuit body is transferred into the receiving chamber through the heating cylinder, and the heating circuit body has a sleeve-shaped sleeve joint portion; both the sleeve joint portion and the heat-shrinkable tube are sleeved on a periphery of the heating cylinder, and the sleeve joint portion is sandwiched between the heating cylinder and the heat-shrinkable tube; and the heat-shrinkable tube is configured to apply fixing force from a circumferential direction of the sleeve joint portion onto the heating circuit body to prevent the heating circuit body from being separated from the heating cylinder.

[0016] In some embodiments, the vaporizing heating assembly includes a mounting base, the heating cylinder is mounted in the mounting base, a closed end of the heating cylinder in the extension direction is suspended inside the mounting base, and spaced apart from the mounting base; and the vaporizing heating assembly further includes a coil, and the coil is located on a side of the closed end of the heating cylinder away from the receiving chamber in the extension direction of the heating cylinder; the coil includes an inner coil and an outer coil, a winding size of the inner coil is smaller than a winding size of the outer coil; and the coil is configured to generate an alternating magnetic field, and the heating cylinder is configured to be inductively coupled to the coil to generate heat in the alternating magnetic field.

[0017] In some embodiments, the vaporizing heating assembly includes a heat-insulating cylinder arranged in the extension direction of the heating cylinder; the heating cylinder is located inside the heat-insulating cylinder and is connected to the heat-insulating cylinder; and the closed end of the heating cylinder is suspended inside the heat-insulating cylinder and spaced apart from a cylinder wall of the heat-insulating cylinder; and the vaporizing heating assembly further includes a coil winding, and the coil winding is disposed outside the heat-insulating cylinder; and an axis of the coil winding is arranged in the extension direction of the heating cylinder, and the coil winding is configured to generate an alternating magnetic field that causes the heating cylinder to heat up.

[0018] In some embodiments, the vaporizing heating assembly includes a mounting base, and the heating cylinder is mounted in the mounting base; and the vaporizing heating assembly further includes a reflective heat-insulating layer, and the reflective heat-insulating layer is disposed between the mounting base and the heating cylinder, and surrounds an outer surface of the heating cylinder.

[0019] According to another aspect of the present disclosure, an embodiment of the present disclosure provides a heat-not-burn device, which includes a device body and any of the vaporizing heating assembly described above; the device body includes an aerosol outlet for inserting an aerosol-generating article; and the vaporizing heating assembly is mounted in the device body, a receiving chamber is in fluid communication with the aerosol outlet, and a bottom wall of the heating cylinder is spaced apart from the device body.

[0020] For the vaporizing heating assembly and the heat-not-burn device described in the above embodiments, the vaporizing heating assembly includes a heating cylinder having one end open and the other end closed, wherein a side wall and a bottom wall of the heating cylinder enclose to form a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article; support protruding portions facing the receiving chamber are arranged on the bottom wall and / or the side wall, the support protruding portions are configured to support the aerosol-generating article, thereby forming a gas intake chamber between the aerosol-generating article and the bottom wall; and the side wall is provided with a contact protruding portion and a recessed portion, the contact protruding portion is arranged facing the receiving chamber, the contact protruding portion is configured to be in heat-conducting contact with an outer circumferential surface of the aerosol-generating article, the recessed portion is configured to form gas intake channels together with the outer circumferential surface of the aerosol-generating article to, and an aerosol outlet is in fluid communication with the gas intake chamber through the gas intake channels. On the one hand, the contact protruding portions on the side wall of the heating cylinder are in heat-conducting contact with the outer circumferential surface of the aerosol-generating article to heat the aerosol-generating article through direct contact heating. On the other hand, external cold air enters the gas intake channel formed by the recessed portions on the side wall of the heating cylinder and the aerosol-generating article, the heating cylinder can heat gas flow in the gas intake channel to form hot gas flow, and the hot gas flow then enters the aerosol-generating article from the gas intake chamber on an axial end of the aerosol-generating article to heat the aerosol-generating article, such that the heat-not-burn device can directly heat the aerosol-generating article through direct contact heating and hot gas flow heating, heat loss of the heat-not-burn device is reduced and heat utilization rate of the heat-not-burn device is improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic diagram of a three-dimensional structure of a heat-not-burn device and an aerosol-generating article according to an embodiment. FIG. 2 is a top view of a heat-not-burn device and an aerosol-generating article according to an embodiment. FIG. 3 is a sectional view in an A-A direction in FIG. 2. FIG. 4 is a sectional view in a B-B direction in FIG. 3. FIG. 5 is a schematic diagram of an internal structure of a heating cylinder according to an embodiment. FIG. 6 is a schematic structural diagram of a heating cylinder and a heating structure according to an embodiment. FIG. 7 is a schematic structural diagram of a vaporizing heating assembly according to an embodiment. FIG. 8 is a schematic structural diagram of a heating cylinder, a heating circuit body and a heat-shrinkable tube according to an embodiment. FIG. 9 is a schematic diagram of partially exploded structures of a heating cylinder, a heating circuit body and a heat-shrinkable tube according to an embodiment. FIG. 10 is a schematic diagram of partially exploded structures of a heating cylinder, a substrate layer and a heating structure according to an embodiment. FIG. 11 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to one embodiment. FIG. 12 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to another embodiment. FIG. 13 is a schematic structural diagram of a heating structure and a substrate layer in an unfolded state according to yet another embodiment. FIG. 14 is a schematic diagram of structures of a first heating ring and a second heating ring and their arrangement positions on a heating cylinder according to one embodiment. FIG. 15 is a schematic diagram of structures of a first heating ring and a second heating ring and their arrangement positions on a heating cylinder according to another embodiment. FIG. 16 is a schematic structural diagram of a heat-not-burn device using electromagnetic induction heating according to one embodiment. FIG. 17 is a schematic structural diagram of a winding structure of a coil according to one embodiment. FIG. 18 is a schematic structural diagram of a winding structure of a coil according to another embodiment. FIG. 19 is a schematic diagram of an internal structure of a heat-not-burn device and an aerosol-generating article according to an embodiment.

[0022] FIGs. 1-19: 100. device body; 101. housing; 102. aerosol outlet; 103. positioning ring; 104. power supply device; 200. vaporizing heating assembly; 11. mounting base; 12. sealing member; 121. communication channel; 13. clamping member; 131. protrusion; 14. heat-insulating cylinder; 141. support arm; 15. plug; 21. heating cylinder; 211. side wall; 2112. contact protruding portion; 2113. recess; 212. bottom wall; 2121. support protruding portion; 2122. communication gap; 213. outward flange; 214. opening end; 215. closed end; 22. external lead wire; 31. gas intake channel; 32. gas intake channel; 33. heat-insulating cavity; 34. reflective heat-insulating layer; and 40. aerosol-generating article;

[0023] FIG. 6: 50. heating structure; 51. heating member; 511. first heating member; 512. second heating member; 52. electrical connector; 521. first pad; 522. second pad; and 523. third pad;

[0024] FIGs. 7-9: 53. heat-shrinkable tube; 54. heating circuit body; 541. sleeve joint portion; and 542. electrical contact pin;

[0025] FIGs. 10-15: 60. substrate layer; 61. first heating element; 611. first heating ring; 62. second heating element; 621. second heating ring; 63. connecting electrode; and 64. common electrode;

[0026] FIG. 16: 71. coil;

[0027] FIG. 19: 81: coil winding; and 811. coil unit.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present disclosure will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are labeled with associated similar element labels. In the following embodiments, more details are described to facilitate clearer understanding of the present disclosure. However, those skilled in the art can readily recognize that some of the features can be omitted in different cases, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present disclosure are not shown or described in the specification, with the aim of preventing the important part of the present disclosure from being overwhelmed by excessive description, and for those skilled in the art, it is unnecessary to describe these related operations in detail, and they can gain a thorough understanding of the related operations according to the description in the specification and the general technical knowledge in the field.

[0029] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. The operation steps described in the embodiments may also be replaced or adjusted in a manner apparent to those skilled in the art. Therefore, the specification and the accompanying drawings are merely for clear description of an embodiment, and are not to be construed as necessarily limiting the components and / or the sequence thereof.

[0030] The serial numbers assigned to the components herein, such as "first", "second", are only used to distinguish the described objects, and do not have any sequence or technical meaning. The terms "connection" and "coupling" mentioned herein include direct and indirect connection (coupling), unless otherwise specified.

[0031] An embodiment of the present disclosure discloses a vaporizing heating assembly 200, which is applied in a heat-not-burn device to accommodate an aerosol-generating article 40, and heat the aerosol-generating article 40 to generate an aerosol.

[0032] Referring to FIGs. 2-10, FIGs. 14-16, and FIG. 19, the vaporizing heating assembly 200 of the embodiment of the present disclosure includes a heating cylinder 21 having one end open and the other end closed. The heating cylinder 21 is generally a cylindrical structure, the heating cylinder 21 has a bottom wall 212 and a side wall 211, the bottom wall 212 and the side wall 211 of the heating cylinder 21 enclose to form a receiving chamber, the receiving chamber is configured to accommodate the aerosol-generating article 40. The aerosol-generating article 40 may be inserted into the receiving chamber from an opening end 214 of the heating cylinder 21, enabling the installation of the aerosol-generating article 40 in the vaporizing heating assembly 200.

[0033] In some embodiments, referring to FIGs. 3, 4, 16, and 19, the vaporizing heating assembly 200 includes a mounting base 11. The heating cylinder 21 is suspended inside the mounting base 11, an outward flange 213 is formed at the opening end 214 of the heating cylinder 21, the outward flange 213 is connected to the side walls 211 of the heating cylinder 21, and the outward flange 213 extends towards a radial outer side of the heating cylinder 21 to form a radial outer flange. The outer flange may be a continuous annular structure extending in a circumferential direction, or a discontinuous structure in the circumferential direction, that is, it includes a plurality of protruding structures spaced apart in the circumferential direction. The outward flange 213 of the heating cylinder 21 can abut against the mounting base 11 in an axial direction of the heating cylinder 21, thereby fixing a position of the heating cylinder 21 in the mounting base 11.

[0034] In one embodiment, a heat-insulating cylinder 14 is provided with openings at both ends in an axial direction, the opening at one end is sealed by a plug 15, and the opening at the other end is sealingly engaged with a sealing member 12. In another embodiment, the heat-insulating cylinder 14 may be provided with an opening at one end and a closed end at the other end in an axial direction, and the opening end 214 of the heat-insulating cylinder 14 is sealingly engaged with the sealing member 12.

[0035] The heating cylinder 21 is located inside the heat-insulating cylinder 14, and is coaxially arranged with the heat-insulating cylinder 14. The bottom wall 212 of the heating cylinder 21 and the plug 15 are spaced apart in the axial direction of the heating cylinder 21, and the side wall 211 of the heating cylinder 21 and a cylinder wall of the heat-insulating cylinder 14 are also spaced apart, such that heat transfer to the heat-insulating cylinder 14 due to direct contact between the heating cylinder 21 and the heat-insulating cylinder 14 is reduced. A communication channel 121 coaxially arranged with the heat-insulating cylinder 14 is formed on the sealing member 12, the communication channel 121 is in fluid communication with the receiving chamber, such that the aerosol-generating article 40 can be inserted into the receiving chamber through the communication channel 121.

[0036] In one embodiment, referring to FIGs. 3, 4, 16, and 19, a support portion extending toward an interior of the heat-insulating cylinder 14 is disposed on a cylindrical wall of the heat-insulating cylinder 14. The support portion may include a support arm 141, one end of the support arm 141 is connected to the cylindrical wall of the heat-insulating cylinder 14, and the other end thereof is suspended inside the heat-insulating cylinder 14. The support arm 141 is an annular structure, and the outward flange 213 of the heating cylinder 21 is supported on the support arm 141. Alternatively, the support arm 141 is a discontinuous structure in a circumferential direction, that is, the support arm 141 includes a plurality of support structures spaced apart in the circumferential direction, to adapt to a plurality of protruding structures spaced apart in a circumferential direction of the outward flange 213. The sealing member 12 has a portion extending into the interior of the heat-insulating cylinder 14, and the sealing member 12 may abut against the outward flange 213 in the axial direction of the heating cylinder 21, in this way, the heating cylinder 21 is clamped and fixed in the heat-insulating cylinder 14 by the support arm 141 and the sealing member 12, to achieve fixation of a position of the heating cylinder 21 in the heat-insulating cylinder 14. Further, the sealing member 12 abuts against the outward flange 213 in the axial direction of the heating cylinder 21 to achieve sealing between the sealing member 12 and the heating cylinder 21. In this way, the heating cylinder 21 is suspended inside the heat-insulating cylinder 14, which can reduce a contact area between the heating cylinder 21 and the heat-insulating cylinder 14, and reduce an amount of heat transferred from the bottom wall of the heating cylinder 21 away from the receiving chamber and toward the vaporizing heating assembly 200 or the bottom of the entire heat-not-burn device. As a result, heat loss is reduced and the heat utilization rate of the heat-not-burn device is improved.

[0037] Of course, in other embodiments, the mounting base 11 is not provided with the heat-insulating cylinder 14 and the sealing member 12. The entire heat-not-burn device includes a device body 100. The device body 100 includes a housing 101, the housing 101 has a mounting chamber, and the heating cylinder 21 of the vaporizing heating assembly 200 is located in the mounting chamber, the bottom wall 212 and the side wall 211 of the heating cylinder 21 are spaced apart from the housing 101, the support arm extending toward the interior of the mounting chamber may be disposed on the housing 101, and a necked-down portion is formed on an outer side surface of the side wall 211 of the heating cylinder 21. The support arm cooperates with the necked-down portion to suspend and fix the heating cylinder 21 in the housing 101, which can also reduce an amount of heat transferred from the heating cylinder 21, due to direct contact the heat-insulating cylinder, away from the receiving chamber and toward the bottom of the heat-not-burn device. As a result, heat loss is reduced and the heat utilization rate of the heat-not-burn device is improved.

[0038] In some embodiments, referring to FIGs. 3, 4, 7, 16, and 19, the heating cylinder 21 cooperates with the mounting base 11 through the outward flange 213, to enable the heating cylinder 21 to be mounted and fixed in the mounting base 11. The vaporizing heating assembly 200 further includes a reflective heat-insulating layer 34. The reflective heat-insulating layer 34 is disposed between the mounting base 11 and the heating cylinder 21, and surrounds an outer surface of the heating cylinder 21. When the heating cylinder 21 heats the aerosol-generating article 40, the reflective heat-insulating layer 34 can reflect thermal radiation from the heating cylinder 21 to prevent heat generated by the heating cylinder 21 from being transferred to the mounting base 11. The reflective heat-insulating layer 34 does not retain heat itself, exhibits good heat insulation effect, and is cost-effective and space-saving.

[0039] Specifically, in the embodiments where the mounting base 11 includes the sealing member 12, the heat-insulating cylinder 14, and the plug 15, the sealing member 12, the heat-insulating cylinder 14, and the plug 15 enclose to form a cavity; or in other embodiments, the sealing member 12 and the heat-insulating cylinder 14 enclose to form a cavity, and the heating cylinder 21 is located in the cavity. An inner surface of the cavity forms an inner surface of the mounting base 11, a gap is maintained between a cylinder wall of the heating cylinder 21 and a cavity wall of the cavity, such that the heating cylinder 21 is suspended inside the mounting base 11 as a whole.

[0040] A width of the gap between the cylinder wall of the heating cylinder 21 and the cavity wall of the cavity is greater than or equal to 0.3 mm. Specifically, A gap between the side wall 211 of the heating cylinder 21 and the cylinder wall of the heat-insulating cylinder 14 may be equal to or greater than 0.3 mm, such as 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, and 0.5 mm.

[0041] The heating cylinder 21 and the mounting base 11 enclose to form a heat-insulating cavity 33 surrounding the heating cylinder 21. The reflective heat-insulating layer 34 is located in the heat-insulating cavity 33 and may be disposed on a cavity wall of the heat-insulating cavity 33, for example, it may be coated on an outer circumferential surface e of the heating cylinder 21. Alternatively, it may be disposed on the inner surface of the mounting base 11, that is, it may be coated on an inner surface of the heat-insulating cylinder 14 and an end surface of the plug 15 facing the heat-insulating cavity 33. Alternatively, the inner surface of the mounting base 11 and the outer surface of the heating cylinder 21 are both coated with the reflective heat-insulating layer 34. Or in other embodiments, no gap is provided between the cylinder wall of the heating cylinder 21 and the inner surface of the mounting base 11, and the reflective heat-insulating layer 34 is sandwiched between the heating cylinder 21 and the mounting base 11.

[0042] In some embodiments, a thickness of the reflective heat-insulating layer 34 is less than or equal to 0.2 mm, thereby saving material and reducing costs. Specifically, the thickness of the reflective heat-insulating layer 34 may be 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, and the like.

[0043] In some embodiments, the reflective heat-insulating layer 34 is a reflective heat-insulating film made of a low-emissivity material, to improve the performance of the reflective heat-insulating layer 34 in reflecting thermal radiation. The reflective heat heat-insulating layer 34 includes any one of an aluminum layer, a silver layer, a stainless steel layer, or a ceramic layer.

[0044] In one embodiment, still referring to FIGs. 2-4, 16, and 19, for the entire heat-not-burn device, the device body 100 includes a housing 101, and the housing 101 has an aerosol outlet 102. The vaporizing heating assembly 200 is clamped inside the housing 101 in the axial direction of the heating cylinder 21, the aerosol outlet 102 is in fluid communication with the receiving chamber through the communication channel 121, the aerosol-generating article 40 may be inserted from the aerosol outlet 102 into the receiving chamber through the communication channel 121, to achieve the installation of the aerosol-generating article 40 in the vaporizing heating assembly 200.

[0045] The housing 101 may be provided with a positioning ring 103 at the aerosol outlet 102, and the sealing member 12 is clamped between the heat-insulating cylinder 14 and the positioning ring 103 in the axial direction of the heating cylinder 21, thereby fixing positions of the sealing member 12 and the positioning ring 103 in the housing 101. The positioning ring 103 and the sealing member 12 enclose to form an annular groove. A clamping member 13 is installed in the annular groove, the clamping member 13 is an annular structure, and the clamping member 13 is made of a rubber material. The clamping member 13 is provided with protrusions 131 that face radially inward, and the protrusions 131 are evenly spaced in a circumferential direction of the clamping member 13. The aerosol-generating article 40 can enter the housing 101 from the aerosol outlet 102, pass through the communication channel 121 in the sealing member 12 and enter the receiving chamber formed by the heating cylinder 21. After the aerosol-generating article 40 enters the receiving chamber, the clamping member 13 can elastically abut against an outer circumferential surface of the aerosol-generating article 40 through the protrusions 131 in an axial direction of the heating cylinder 21, thereby limiting and fixing the aerosol-generating article 40, and preventing shaking of the aerosol-generating article 40. It can prevent the aerosol-generating article 40 from axial movement and detaching from the receiving chamber, and can improve the assembly stability of the aerosol-generating article 40, thereby avoiding affecting normal heating operation of the aerosol-generating article 40.

[0046] In some embodiments, referring to FIGs. 3-10, 14-16, and 19, the side wall 211 of the heating cylinder 21 has a contact protruding portion 2112 protruding inwardly toward the receiving chamber, and a recessed portion 2113 is formed on the side wall 211 of the heating cylinder 21. After the aerosol-generating article 40 is installed in the receiving chamber, the contact protruding portions 2112 can be in heat-conducting contact with the outer circumferential surface of the aerosol-generating article 40 to transfer heat from the heating cylinder 21 to the aerosol-generating article 40, thereby heating the aerosol-generating article 40 through direct contact. After the contact protruding portions 2112 contact the aerosol-generating article 40, the recessed portions 2113 on the side wall 211 of the heating cylinder 21 can enclose the outer circumferential surface of the aerosol-generating article 40 to form gas intake channels 31 in communication with the aerosol outlet 102, external cold air entering the housing 101 from the aerosol outlet 102 enter the gas intake channels 31 through gaps between adjacent protrusions 131 on the clamping member 13 and annular gaps between the sealing member 12 and the aerosol-generating article 40.

[0047] In one embodiment, referring to FIG. 5, the contact protruding portion 2112 on the side wall 211 of the heating cylinder 21 includes a contact rib. The contact rib extends in the axial direction of the heating cylinder 21, a length of each contact rib is equal to or slightly less than a size of the side wall 211 of the heating cylinder 21 in the axial direction of the heating cylinder 21. A plurality of the contact ribs may be provided, two adjacent contact ribs are evenly spaced in the circumferential direction of the heating cylinder 21, one recessed portion 2113 is formed between the two adjacent contact ribs on the side wall 211 of the heating cylinder 21. The recessed portions 2113 form grooves extending in the axial direction of the heating cylinder 21, the recessed portions 2113 are evenly spaced in the circumferential direction of the heating cylinder 21, and the gas intake channels 31 formed by enclosing the recessed portions 2113 and the outer circumferential surface of the aerosol-generating article 40 and are also evenly spaced in the circumferential direction of the heating cylinder 21, such that the aerosol-generating article 40 and the side wall 211 of the heating cylinder 21 enclose to form a plurality of the gas intake channels 31 that extend in the axial direction of the heating cylinder 21 and are evenly spaced in the circumferential direction of the heating cylinder, which is conductive to reducing flow resistance of the gas flow in the gas intake channels 31, reducing inhalation resistance of the heat-not-burn device, and facilitating uniform distribution of the gas flow in the circumferential direction of the aerosol-generating article 40.

[0048] In another embodiment, the contact protruding portions 2112 on the side wall 211 of the heating cylinder 21 may also include circular dot-shaped protruding portions, and a plurality of the circular dot-shaped protruding portions are provided. Two adjacent circular dot-shaped protruding portions are evenly spaced in the circumferential and axial direction of the heating cylinder 21, and the recessed portions 2113 on the side wall 211 of the heating cylinder 21 are formed between the two adjacent circular dot-shaped protruding portions. The recessed portions 2113 and the outer circumferential surface of the aerosol-generating article 40 enclose to form the gas intake channels 31, such that the gas intake channels 31 can be extended in the axial direction of the heating cylinder 21, further reducing flow resistance of the gas flow in the gas intake channels 31 and decreasing inhalation resistance.

[0049] In some other embodiments, the contact protruding portions 2112 on the side wall 211 of the heating cylinder 21 may further include wavy strip-shaped structures or other irregular shapes, as long as the contact protruding portions 2112 can contact the outer circumferential surface of the aerosol-generating article 40, and the recessed portions 2113 formed between two adjacent contact protruding portions 2112 and the aerosol-generating article 40 enclose to form the gas intake channels 31 in communication with the aerosol outlet 102.

[0050] The side wall 211 of the heating cylinder 21 is provided with the contact protruding portion 2112 and the recessed portion 2113, the contact protruding portion 2112 is in heat-conducting contact with the outer circumferential surface of the aerosol-generating article 40, and the recessed portion 2113 and the outer circumferential surface of the aerosol-generating article 40 enclose to form the gas intake channels 31. On the one hand, heat from the heating cylinder 21 can be transferred to the aerosol-generating article 40 through direct contact between the contact protruding portions 2112 and the outer circumferential surface of the aerosol-generating article 40, so as to heat the aerosol-generating article 40. On the other hand, when the external cold air flows through the gas intake channels 31, heat is transferred from the side wall 211 of heating cylinder 21 to the gas flow in the gas intake channels 31 to form hot gas flow through the contact between the side wall 211 of the heating cylinder 21 and the gas flow in the gas intake channel 31, to facilitate the subsequent heating of the aerosol-generating article 40 through the hot gas flow to improve heating uniformity of the aerosol-generating article 40. By combining direct contact heating and hot gas flow heating of the aerosol-generating article 40, the heat utilization rate of the vaporizing heating assembly 200 is effectively improved, thereby reducing heat loss and lowering energy consumption of the heat-not-burn device.

[0051] In some embodiments, in order to increase the contact area between the aerosol-generating article 40 and the side wall 211 of the heating cylinder 21 and thereby improve heat transfer efficiency between the heating cylinder 21 and the aerosol-generating article 40, the contact protruding portions 2112 may be embedded into the aerosol-generating article 40.

[0052] For example, in one embodiment, referring to FIG. 5, the contact ribs have a thickness extending in the circumferential direction of the heating cylinder 21. The thickness of the contact ribs can be gradually reduced in a radial direction of the heating cylinder 21 from the side wall 211 of the heating cylinder 21 toward the receiving chamber, to facilitate embedding of the contact ribs into the aerosol-generating article 40. On the one hand, the contact area between the contact ribs and the aerosol-generating article 40 can be increased, thereby improving heat transfer efficiency between the heating cylinder 21 and the aerosol-generating article 40; on the other hand, the contact ribs can be embedded into the aerosol-generating article 40 to reduce the probability of the aerosol-generating article 40 detaching from the receiving chamber.

[0053] Further, in one embodiment, the thickness of the contact ribs may be gradually increased from the opening end 214 of the heating cylinder 21 to the closed end 215 in the axial direction of the heating cylinder 21, such that the contact ribs are wedged tightly into the aerosol-generating article 40 in the axial direction of the heating cylinder 21, the contact area between the aerosol-generating article 40 and the heating cylinder 21 is further increased, the heat transfer efficiency is further improved, and the probability of the aerosol-generating article 40 detaching from the receiving chamber is further reduced.

[0054] In another embodiment, the contact protruding portions 2112 may be arranged as dot-shaped protruding portions having a shape similar to a cone, and the dot-shaped protruding portions have tips located radially inward in the radial direction of the heating cylinder 21, and the contact protruding portions may be embedded into the aerosol-generating article 40 through the tips of the dot-shaped protruding portions to increase the contact area between the contact protruding portions 2112 and the aerosol-generating article 40.

[0055] In order to ensure that the hot gas flow formed in the gas intake channel 31 can heat the aerosol-generating article 40, support protruding portions 2121 facing the receiving chamber may be arranged on the bottom wall 212 or the side wall 211, or on both the bottom wall 212 and the side wall 211 of the heating cylinder 21. The support protruding portions 2121 is configured to support the aerosol-generating article 40 in the axial direction of the heating cylinder 21, to prevent the aerosol-generating article 40 from contacting the bottom wall 212 of the heating cylinder 21, such that a gas intake chamber 32 in communication with the gas intake channel 31 is formed between the aerosol-generating article 40 and the bottom wall 212 of the heating cylinder 21, the hot gas flow in the gas intake channel 31 can enter the gas intake chamber 32, and then enter the aerosol-generating article 40 from an axial end of the aerosol-generating article 40 to heat the aerosol-generating article 40. The aerosol generated by heating can exit through the aerosol outlet 102 and be discharged from the opposite end of the aerosol-generating article 40. Directions indicated by arrows in FIGs. 16 and 19 are the gas flow directions. The arrangement of the gas intake chamber 32 can provide sufficient space for the flow of hot gas flow, especially at a position opposite to the axial end of the aerosol-generating article 40, which can effectively prevent the hot gas flow from being blocked, and ensure that the hot gas flow is inhaled into the interior of the aerosol-generating article 40 from the axial end of the aerosol-generating article 40.

[0056] In some embodiments, referring to FIGs. 3-10, 14-16, and 19, the support protruding portions 2121 may be arranged on the bottom wall 212 of the heating cylinder 21, a plurality of the support protruding portions 2121 are provided, two adjacent support protruding portions 2121 are spaced apart on the bottom wall 212 of the heating cylinder 21 to form a communication gap 2122 between the two adjacent support protruding portions 2121, and the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122.

[0057] For example, in one embodiment, still referring to FIG. 5, each support protruding portion 2121 may include support ribs, the support ribs extend in the radial direction of the heating cylinder 21, and dimensions of the support ribs in the radial direction of the heating cylinder 21 are smaller than radial dimensions of the receiving chamber, such that the gas intake chamber 32 is formed between the bottom wall 212 and the aerosol-generating article 40 where the no support ribs are provided. The communication gap 2122 is formed between the two adjacent support ribs, and the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122.

[0058] Further, in one embodiment, referring to FIG. 5, a number of the support ribs may be set to be equal to a number of the contact ribs, and the support ribs are connected to the contact ribs one by one, so as to ensure that the communication gaps 2122 are in direct communication with the gas intake channels 31 in the axial direction of the heating cylinder 21, which can, on the one hand, reduce the resistance of the hot gas flow entering the gas intake chamber 32 from the gas intake channel 31, thereby lowering the inhalation resistance; and on the other hand, it can make a movement direction of each gas flow stream, preventing it from flowing to an adjacent position. This can effectively avoid the vibration caused by gas flow turbulence, and is conducive to improving the stability of the aerosol-generating article 40 during inhalation and improving the user experience.

[0059] In another embodiment, the support protruding portions 2121 may include cylindrical dot-shaped protruding portions, which are located on the bottom wall 212 of the heating cylinder 21 to support an axial end face of the aerosol-generating article 40. One communication gap 2122 are formed between two adjacent cylindrical dot-shaped protruding portions, and the gas intake chamber 32 is also formed between the bottom wall 212 without the cylindrical dot-shaped protruding portions and the aerosol-generating article 40. In this way, the communication gaps 2122 enable communication between the gas intake channels 31 and the gas intake chambers 32.

[0060] Of course, in other embodiments, some of the support protruding portions may be arranged on the side wall of the heating cylinder. For example, each support protruding portion includes a support rib; the support ribs are spaced apart from the bottom wall of the heating cylinder, and the support ribs are connected to the contact ribs. One communication gap is formed between two adjacent support ribs, and the aerosol-generating article is supported through the support ribs to form the gas intake chamber between the bottom wall of the heating cylinder and the aerosol-generating article. The gas intake channel is in fluid communication with the gas intake chamber through the communication gap.

[0061] In the embodiments where the gas intake channel 31 is in fluid communication with the gas intake chamber 32 through the communication gap 2122 between the two support protruding portions 2121, the hot gas flow in the gas intake channel 31 can enter the gas intake chamber 32 through the communication gap 2122, then enter the aerosol-generating article 40 from the end of the aerosol-generating article 40 to heat the aerosol-generating article 40, and retain a portion of the hot gas flow through the gas intake chamber 32 to ensure the continuity of aerosol generation of the aerosol-generating article 40.

[0062] In one embodiment, referring to FIGs. 3-5, the heating cylinder 21 is formed of a conductive ceramic structure, that is, the heating cylinder 21 is made of a conductive ceramic material. The heating cylinder 21 itself can generate heat when being energized, which facilitates the manufacturing of the vaporizing heating assembly 200 and helps ensure structural consistency between the vaporizing heating assembly 200 and the entire heat-not-burn device.

[0063] In some embodiments, the vaporizing heating assembly 200 includes an external lead wire 22. A positive electrode connection portion (not shown in the figure) and a negative electrode connection portion (not shown in the figure) that are connected to the external lead wire 22 are arranged on an outer circumferential surface of the heating cylinder 21. The heating cylinder 21 is electrically connected to a power supply device 104 in the main device body 100 through the external lead wire 22, so as to control the heating of the vaporizing heating assembly 200 through a circuit board.

[0064] In one embodiment, a plurality of the external lead wires 22 may be provided, and a plurality of the electrode connection portion positive and the negative electrode connection portions may be spaced apart on the corresponding heating cylinder 21. By separately controlling the power supply of different external lead wires 22, zoned heating of the heating cylinder 21 or heating film can be achieved.

[0065] Further, a number of positive electrode connection portions may be two, three, or four or more, the plurality of the positive electrode connection portions are spaced apart in the axial direction of the heating cylinder 21. The positive electrode connection portion and the negative electrode connection portions are alternately arranged in the axial direction of the heating cylinder 21. A number of the external lead wires 22 are equal to a total number of the positive electrode connection portion and the negative electrode connection portions. Each positive electrode connection portion and each negative electrode connection portion are connected to one external lead wire 22. By controlling the power supply between two adjacent positive electrode connection portion and negative electrode connection portion at different position in the axial direction, heating can be achieved in an area between the energized the positive electrode connection portion and the negative electrode connection portion on the heating cylinder 21. Heating of different heating zones can be controlled in sequence in the axial direction of the heating cylinder 21 to ensure continuity of aerosol generation, and help ensure the taste of aerosol at each state of aerosol generation.

[0066] Of course, in other embodiments, one positive electrode connection portion and one negative electrode connection portions may be provided, as long as the heating cylinder 21 can achieve heating to heat the aerosol-generating article 40 and the gas flow.

[0067] In some embodiments, the vaporizing heating assembly 200 further includes a heating structure 50. The heating structure 50 is located outside the heating cylinder 21 and fixed to the side wall 211 of the heating cylinder 21. The heating structure 50 is configured to heat the heating cylinder 21, thereby radiating infrared rays into the receiving chamber and heating the gas flowing through the gas intake channels 31 to generate hot gas flow, which can also heat the aerosol-generating article 40 inserted into the receiving chamber with infrared rays and hot gas flow at the same time, which can effectively increase an amount of heating received inside the aerosol-generating article 40, ensuring more uniform heating inside and outside the aerosol-generating article 40, and thereby improving the vaporization efficiency.

[0068] When the aerosol-generating article 40 is inserted into the receiving chamber for heating, the heating structure 50, on the one hand, directly transfers heat to the aerosol-generating article 40 by radiating the infrared rays, and on the other hand transfers heat to the heating cylinder 21. The heating cylinder 21 heats the gas flow passing through the gas intake channel 31 to form hot gas flow. As a user inhales the aerosol-generating article 40, the hot gas flow flows along the gas intake channel 31 to the gas intake chamber 32, and is inhaled into the interior of the aerosol-generating article 40, and the heat carried by the hot gas flow heats the interior of the aerosol-generating article 40. In addition, the aerosol-generating article 40 in contact with the heating cylinder 21 can be heated directly by the heating cylinder 21, so as to heat the aerosol-generating article 40 through direct heat transfer.

[0069] Referring to FIG. 6, the heating structure 50 includes a heating member 51 and an electrical connector 52. The heating member 51 is connected to the side wall 211 of the heating cylinder 21, and extends in the circumferential direction of the heating cylinder 21. The electrical connector 52 is also arranged on the side wall 211 of the heating cylinder 21, and is connected to the heating member 51. The electrical connector 52 can be connected to the power supply device 104 through the external lead wire 22, such that the power supply device 104 supplies power to the heating member 51, causing the heating member 51 to generate heat and then heat a corresponding area on the heating cylinder 21. The heating cylinder 21 is made of an infrared-transparent material. When the heating member 51 is generated, infrared rays generated thereby can penetrate the heating cylinder 21 and radiate into the receiving chamber, heating the aerosol-generating article 40 in the cavity as well as the gas flow in the gas intake channel 31. A number of the heating members 51 may be one or more, and a number of the electrical connectors 52 is determined according to the number of the heating members 51.

[0070] Materials for the heating cylinder 21 include, but are not limited to, glass and ceramic. The heating cylinder 21 made of the materials is suitable for allowing infrared rays to pass through and exhibits high thermal conductivity, enabling direct contact heating of the aerosol-generating article 40, or enabling the infrared rays to pass through the heating cylinder 21 to directly heat the aerosol-generating article 40.

[0071] In some embodiments, referring to FIG. 6, the heating member 51 specifically includes a first heating member 511 and a second heating member 512. The electrical connector 52 specifically includes a first pad 521, a second pad 522, and a third pad 523. The first heating member 511 and the second heating member 512 are spaced apart on the side wall 211 of the heating cylinder 21 in an extension direction of the heating cylinder 21, the first heating member 511 is located near the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21, and the second heating member 512 is located away from the opening end 214 of the heating cylinder 21. The first pad 521, the second pad 522, and the third pad 523 are all arranged between the first heating member 511 and the second heating member 512. One end of the first heating member 511 in a circumferential direction is connected to the first pad 521, and the other end thereof is connected to the second pad 522. One end of the second heating member 512 in a circumferential direction is connected to the first pad 521, and the other end thereof is connected to the third pad 523. The first pad 521, the second pad 522, and the third pad 523 are respectively electrically connected to the power supply device 104 or a corresponding circuit, such that the first heating member 511 and the second heating member 512 can be connected in parallel. Specifically, the pads and the heating members 51 can be connected through a conductive silver paste or other conductive bodies.

[0072] Still referring to FIG. 6, when the first pad 521 and the second pad 522 are both energized, the first heating member 511 is powered on, and the first heating member 511 heats up alone. When the first pad 521 and the third pad 523 are both energized, the second heating member 512 is powered on, and the second heating member 512 heats up alone. When the first pad 521, the second pad 522, and the third pad 523 are all energized simultaneously, both the first heating member 511 and the second heating member 512 are powered on and heat up at simultaneously. The power supply device 104 or the corresponding circuit can independently control heating temperatures of the first heating member 511 and the second heating member 512 to allow appropriate adjustment and control according to use requirements.

[0073] For example, one end of the aerosol-generating article 40 located in the receiving chamber in an extension direction of the aerosol-generating article, that is, in the extension direction of the heating cylinder 21, is the a gas intake end. A substrate segment of the aerosol-generating article 40 for accommodating an aerosol substrate is located at the gas intake end. A portion located outside the receiving chamber and wrapped by the user's lips is defined as a filter tip segment. At an initial stage of heating the aerosol-generating article 40, heating by the first heating member 511 can be controlled as primary heating, that is, a heating temperature of the first heating member 511 is higher than that of the second heating member 512, such that a portion of the substrate segment of the aerosol-generating article 40 near the filter tip segment is heated first. After preset heating time, heating can be adjusted to be primarily performed by the second heating member 512, that is, the heating temperature of the first heating member 511 is lowered while a heating temperature of the second heating member 512 is raised, in which case, a position of the substrate segment of the aerosol-generating article 40 away from the filter tip segment is heated to prevent a temperature near the filter tip segment of the aerosol-generating article 40 from being too high and causing a burn sensation. Preset time and specific heating temperatures can be set according to actual usage requirements, which will not be repeated herein.

[0074] In some embodiments, referring to FIGs. 7-9, the heating structure 50 of the vaporizing heating assembly 200 includes a heat-shrinkable tube 53 and a heating circuit body 54. Heat generated by the heating circuit body 54 is transferred into the receiving chamber through the heating cylinder 21. The heating circuit body 54 has a sleeve-shaped sleeve joint portion 541. Both the sleeve joint portion 541 and the heat-shrinkable tube 53 are sleeved on a periphery of the heating cylinder 21, the sleeve joint portion 541 is sandwiched between the heating cylinder 21 and the heat-shrinkable tube 53. The heat-shrinkable tube 53 is configured to apply fixing force from a circumferential direction of the sleeve joint portion 541 onto the heating circuit body 54 to prevent the heating circuit body 54 from being separated from the heating cylinder 21.

[0075] The heating cylinder 21 is thermally conductive, and heat generated by the heating circuit body 54 after being energized can be transferred to the receiving chamber through the heating cylinder 21, so as to heat the aerosol-generating article 40 located in the receiving chamber. The heating cylinder 21 can be made of a high thermal conductivity material such as aluminum alloy, copper, and aluminum oxide. By fabricating the heating cylinder 21 from the high thermal conductivity material, the thermal performance of the heating cylinder 21 is improved, enabling the heat generated by the heating circuit body 54 to be transferred to the receiving chamber as much as possible, thereby reducing thermal energy loss.

[0076] By configuring the sleeve joint portion 541 of the heating circuit body 54 to be sleeved on the periphery of the heating cylinder 21, the heating circuit body 54 is not connected to the heating cylinder 21 by thick film process, but is pre-fabricated and then sleeved on the periphery of the heating cylinder 21. The heating circuit body 54 is pre-fabricated by a non-thick-film process, which can avoid inconsistent thickness or width of different segments caused by the thick film process, thereby ensuring the overall uniformity of the heating circuit body. In addition, by sleeving the heat-shrinkable tube 53 on the periphery of the heating cylinder 21, the sleeve joint portion 541 is sandwiched between the heating cylinder 21 and the heat-shrinkable tube 53, the heat-shrinkable tube 53 applies the fixing force from the circumferential direction of the sleeve joint portion 541 onto the heating circuit body 54, thereby fixing the heating circuit body 54 and preventing the heating circuit body 54 from being separated from the heating cylinder 21. Therefore, the heating structure 50 provided in this embodiment improves the uniformity of the heating circuit body 54 and ensures the stability of the heating circuit body 54.

[0077] Referring to FIGs. 8 and 9, the heating circuit body 54 further includes an electrical contact pin 542. One end of the electrical contact pin 542 is electrically connected to the sleeve joint portion 541, and the other end thereof is electrically connected to the power supply device 104 through the external lead wire 22, such that the power supply device 104 can supply power to the heating circuit body 54.

[0078] In some embodiments, the heat-shrinkable tube 53 is a heat shrink sleeve made of a polyolefin material. The heat-shrinkable tube 53 is configured to apply fixing force onto the sleeve joint portion 541 when it undergoes shrinkage deformation upon heating. By utilizing the shrinkage property upon heating the heat-shrinkable tube 53, the heating circuit body 54 can be well fixed. In addition, the heat-shrinkable tube 53 also has the functions of softness, flame retardancy, insulation, and corrosion resistance, which provide excellent protection for the heating circuit body 54.

[0079] In some embodiments, a mounting groove is formed on the side wall 211 of the heating cylinder 21, and the sleeve joint portion 541 is mounted in the mounting groove. By mounting the sleeve joint portion 541 in the mounting groove, the stability of the connection between the heating circuit body 54 and the heating cylinder 21 is improved. Of course, in other embodiments, the side wall 211 of the heating cylinder 21 may not be provided with a mounting groove.

[0080] In some embodiments, the heating circuit body 54 includes a set of sub-heating circuit bodies, and the sub-heating circuit bodies can cover the substrate segment of the aerosol-generating article 40. It should be understood that in other embodiments, the heating circuit body 54 may also include at least two sets of sub-heating circuit bodies. In specific implementation, at least two sets of sub-heating circuit bodies can be arranged in the axial direction of heating cylinder 21 or arranged around a circumferential direction of the heating cylinder 21.

[0081] In some embodiments, the heating circuit body 54 is manufactured by laser cutting. The laser cutting process has high precision, and effectively ensures the overall consistency of the circuit. It should be understood that, in other embodiments, the heating circuit body 54 may also be manufactured by stamping or machining.

[0082] In some embodiments, referring to FIGs. 10-15, the vaporizing heating assembly 200 includes a heating structure 50 and a substrate layer 60. The substrate layer 60 is fixed to the side wall 211 between the outward flange 213 and the bottom of the heating cylinder 21, and the heating structure 50 is fixed to the substrate layer 60. The heating structure 50 may be a sheet, a mesh, or a wire structure. Taking the sheet-shaped heating structure 50 as an example, the heating structure 50 may be directly fixed to the outer circumferential surface of the heating cylinder 21 by screen printing. Specifically, the heating cylinder 21 is placed on a rotatable jig, the screen is a sheet structure tightly attached to the side wall 211 of the heating cylinder 21, raw materials of the heating structure 50 on the screen are scraped with a shovel to achieve fixation of the heating structure 50. However, due to the structural design of the outward flange 213, it is impossible to attach the screen onto the heating cylinder 21, and it is also impossible to fix the heating structure 50 directly onto an outer side wall of the heating cylinder 21. In order to solve the problems, in this embodiment, the heating structure 50 may be fixed to the substrate layer 60, and the substrate layer 60 is fixed to the outer side wall of the heating cylinder 21. For example, the heating structure 50 is fixed to the substrate layer 60 by thick-film printing, and then the substrate layer 60 fixed with the heating structure 50 is sintered and fixed to the outer side wall of the heating cylinder 21, thereby indirectly fixing the heating structure 50 to the heating cylinder 21 and reducing the difficulty of fixing the heating structure 50 to the heating cylinder 20.

[0083] The substrate layer 60 is made of a material suitable for tape casting process and has certain thermal conductivity. For example, the substrate layer 60 may be metal, ceramic, and the like. The substrate layer 60 is a sheet manufactured by the tape casting process. In this way, the produced substrate layer 60 has certain flexibility. For example, as shown in FIGs. 11-13, the substrate layer 60 in an unfolded state is a rectangular sheet layer, which can be deformed by its own flexibility to be easily adhered and fixed to the outer side wall of the heating cylinder 21 to form a columnar substrate layer 60, for example, the substrate layer 60 shown in FIG. 10.

[0084] The thinner the substrate layer 60, the better the thermal conduction rate and thermal uniformity of the substrate layer 60. Specifically, a thickness of the substrate layer 60 is 25 µm-500 µm.

[0085] The aerosol-generating article 40 can be divided into various categories according to different usage requirements. Based on the difficulty of aerosol generation, it can be generally divided into two categories. One category is aerosol-generating article that is easy to generate aerosol, and the aerosol-generating article only needs slight heating to rapidly generate aerosol. The other category is aerosol-generating article that is difficult to generate aerosol and require relatively more heat to generate aerosol. The vaporizing heating assembly 200 in the present disclosure is suitable for the aerosol-generating article that is difficult to generate aerosol.

[0086] For the aerosol-generating article 40 that is difficult to generate aerosol, a larger heating area is required. Therefore, the existing vaporizing heating assembly 200 needs to heat the entire aerosol-generating article 40 in contact with it. However, since only one heating structure 50 is used, only one heating mode is available for the aerosol-generating article 40, it is impossible to provide corresponding heat according to needs of the aerosol-generating article 40 in different time periods, which is inconvenient for flexible control. Moreover, due to an integrated heating method, more heat needs to be provided for the aerosol-generating article 40, which is easy to cause the problem of burning mouth, especially during the initial heating of the aerosol-generating article 40.

[0087] In one embodiment, the heating structure 50 includes a first heating element 61 and a second heating element 62 that are connected in parallel. The heating cylinder 21 is fixed with the first heating element 61 and the second heating element 62 connected in parallel through the substrate layer 60. The first heating element 61 and the second heating element 62 are two relatively independent heating elements, which facilitates flexible control of the heating structure 50, solves the problem of burning mouth when the vaporizing heating assembly 200 heats the aerosol-generating article 40, and can also provide more heating modes for the aerosol-generating article 40. Specifically, when the vaporizing heating assembly 200 heats the aerosol-generating article 40 in the heating cylinder 21, the first heating element 61 and the second heating element 62 can work synchronously or asynchronously. For example, when the first heating element 61 is working, the second heating element 62 is not working; or when the second heating element 62 is working, the first heating element 61 is not working; alternatively, the first heating element 61 and the second heating element 62 can work simultaneously. The specific working mode of the first heating element 61 and the second heating element 62 is not limited herein, and can be flexibly combined according to the actual heat demand of the aerosol-generating article 40, as long as the heat supplied by the heating structure 50 to the aerosol-generating article 40 does not cause the problem of burning mouth.

[0088] Referring to FIGs. 14 and 15, specifically, the first heating element 61 and the second heating element 62 are respectively indirectly fixed to the heating cylinder 21 in the axial direction of the heating cylinder 21, thereby enabling heating of different axial segments of the aerosol-generating article 40. Taking the first heating element 61 near the opening end 214 of the heating cylinder 21, and the second heating element 62 near the bottom wall 212 of the heating cylinder 21 as an example, when the aerosol-generating article 40 is heated, the first heating element 61 may be operated first, or the first heating element 61 may operate as the primary heating element, so as to give priority to heating the substrate segment near a top of the aerosol-generating article 40, to release the aerosol quickly, and to appropriately reduce the heat provided by the vaporizing heating assembly 200 to the aerosol-generating article 40 to avoid the problem of burning mouth. After the aerosol-generating article 40 is heated for a period of time, only the second heating element 62 is allowed to work or the second heating element 62 may operate as the primary heating element to heat the aerosol-generating article 40, such that the aerosol-generating article 40 can continuously release the aerosol. When the first heating element 61 operates as the primary heating element, the second heating element 62 operates as a supplementary heating element, heat generated by the second heating element 62 needs to be lower than heat generated by the first heating element 61. Similarly, when the second heating element 62 operates as the primary heating element, the first heating element 61 operates as a supplementary heating element, heat generated by the first heating element 61 needs to be lower than heat generated by the second heating element 62.

[0089] The first heating element 61 forms at least one layer of first heating ring 611 in a circumferential direction of the heating cylinder 21, and the first heating element 61 realizes a serial connection of adjacent layers of the first heating ring 611 by bending. The second heating element 62 forms at least one layer of second heating ring 621 in a circumferential direction of the heating cylinder 21, and the second heating element 62 realizes a serial connection of adjacent layers of the second heating ring 621 by bending.

[0090] When the first heating element 61 forms the first heating ring 611 in the circumferential direction of the heating cylinder 21, and the second heating element 62 forms the second heating ring 621 in the circumferential direction of the heating cylinder 21, the heating structure 50 can provide a relatively uniform heating effect on the outer circumferential surface of the aerosol-generating article 40 at a same axial position. More specifically, a length direction of the first heating ring 611 on a same layer is perpendicular to the axial direction of the heating cylinder 21, and a length direction of the second heating ring 621 in a same layer is also perpendicular to the axial direction of the heating cylinder 21, such that it is easy to ensure that the heating structure 50 can provides a more uniform heating effect to a circumferential surface of the aerosol-generating article 40 at the same axial position. Taking FIG. 11 as an example, FIG. 11 mainly illustrates a detailed structure of the heating structure 50 on the substrate layer 60 in the unfolded state, where the length directions of both the first heating ring 611 and the second heating ring 621 refer to a horizontal direction, and the axial direction of the heating cylinder 21 refers to a vertical direction.

[0091] Of course, in other embodiments, taking the first heating element 61 as an example, the first heating element 61 may also be fixed to the circumferential surface of the heating cylinder 21 in a spiral shape. However, in this case, some positions of the circumferential surface of the aerosol-generating article 40 at the same axial position are correspondingly provided with the first heating element 61, while other positions are not provided with the first heating element 61, that is, the heating structure 50 cannot provide a uniform heating effect on the circumferential surface of the aerosol-generating article 40 at the same axial position.

[0092] Referring to FIG. 11, specifically, in some embodiments, the first heating element 61 forms two layers of the first heating rings 611, and the second heating element 62 forms two layers of the second heating rings 621. The first heating ring 611 located near the second heating element 62, and the second heating ring 621 located near the first heating element 61 are both semi-annular structures; and the two semi-annular structures form one layer of heating ring, that is, the first heating rings 611 and the second heating rings 621 together form three layers of heating rings. Further, that is, the first heating element 61 and the second heating element 62 each form 1.5 turns of heating rings on the circumferential surface of the heating cylinder 21. The first heating element 61 and the second heating element 62 are obliquely symmetrically distributed on the circumferential surface of the heating cylinder 21. For example, in FIG. 11, the first heating element 61 is distributed in an upper oblique segment near an upper right corner of the circumferential surface of the heating cylinder 21, and the second heating element 62 is distributed in a lower oblique segment near a lower left corner of the circumferential surface of the heating cylinder 21. When the first heating rings 611 and the second heating rings 621 each form 1.5 rings of heating rings, the circumferential surface of the substrate layer 60 in FIG. 11 is unfolded into a rectangular shape (an unfolded shape of the outer circumferential surface of the heating cylinder 21 is also rectangular or approximately rectangular). Lengths of the heating rings in the same layer is approximately equal to the length of the circumferential surface of the heating cylinder 21, such that the heating rings in the same layer form an approximate ring shape on a cylindrical surface of the heating cylinder 21 that is folded. When the heating ring in the same layer is formed by a combination of a portion of the first heating ring 611 and a portion of the second heating ring 621, the lengths of the heating rings in the same layer refers to a sum of the lengths of the first heating ring 611 and the second heating ring 621 on the layer.

[0093] In other embodiments, when the first heating element 61 and the second heating element 62 form three layers of heating rings on the heating cylinder 21, other proportions may also be adopted. For example, the first heating element 61 forms 1.4 rings of heating rings on the heating cylinder 21, and the second heating element 62 forms 1.6 rings of heating rings on the heating cylinder 21. Alternatively, in other embodiments, for example, as shown in FIG. 12, the first heating element 61 forms two rings of the first heating rings 611 on the heating cylinder 21, and the second heating element 62 forms two rings of the second heating rings 621 on the heating cylinder 21. Further alternatively, in other embodiments, for example, as shown in FIG. 13, the first heating element 61 forms one ring of the first heating ring 611 on the heating cylinder 21, and the second heating element 62 forms two rings of the second heating rings 621 on the heating cylinder 21. A number of rings or turns formed by the first heating ring 611 and the second heating ring 621 is not exhaustively listed herein, and may be flexibly selected according to actual heating requirements. When the first heating element 61 and the second heating element 62 form full-circle heating rings, uniform energy distribution can be provided at different circumferential surfaces of the aerosol-generating article 40 located at the same axial position, thereby providing a uniform heating effect on the aerosol-generating article 40 at the same axial position.

[0094] In some embodiments, referring to FIGs. 11-13, ends of the first heating element 61 and the second heating element 62 that are far away from each other are respectively provided with a connecting electrode 63, and a common electrode 64 is arranged between ends of the first heating element 61 and the second heating element 62 that are close to each other. The connecting electrode 63 is configured to be electrically connected to one of positive electrode or negative electrode of the power supply device 104, and the common electrode 64 is configured to be electrically connected to the other of positive electrode or negative electrode of the power supply device 104. By introducing the common electrode 64 between the first heating element 61 and the second heating element 62 connected in parallel, a circuit connection of the vaporizing heating assembly 200 is simplified.

[0095] Preferably, a resistance value of the first heating element 61 is equal to or approximately equal to a resistance value of the second heating element 62. When a resistance value of the first heating element 61 is equal to or approximately equal to a resistance value of the second heating element 62, it is convenient to heat the aerosol-generating article 40 and provide uniform energy distribution, as well as perform flexible control of the heating structure 50.

[0096] In some embodiments, corresponding to the embodiments shown in FIGs. 10-15, a thermal conductivity of the heating cylinder 21 is not less than 10 W / (m·K), such that the heating cylinder 21 can evenly transfer the heat generated by the heating structure 50. The heating cylinder 21 may be made of, for example, aluminum alloy, copper, aluminum nitride, or the like.

[0097] In some embodiments, referring to FIG. 16, the vaporizing heating assembly 200 heats the aerosol-generating article 40 using electromagnetic induction heating. The vaporizing heating assembly 200 includes a mounting base 11, the heating cylinder 21 is mounted on the mounting base 11, a closed end 215 of the heating cylinder 21 in the extension direction is suspended inside the mounting base 11, and spaced apart from the mounting base 11. The vaporizing heating assembly 200 further includes a coil 71, and the coil 71 is located on a side of the closed end 215 of the heating cylinder 21 away from the receiving chamber in the extension direction of the heating cylinder 21. The coil 71 includes an inner coil and an outer coil, a winding size of the inner coil is smaller than a winding size of the outer coil. The coil 71 is configured to generate an alternating magnetic field, and the heating cylinder 21 is configured to be inductively coupled to the coil 71 to generate heat in the alternating magnetic field. In this way, electromagnetic induction heating is adopted, it is thus unnecessary to arrange an external lead wire 22 on the heating cylinder 21, which can avoid an increase of energy loss caused by current transmission through the external lead wire 22, thereby helping to reduce the energy consumption of the vaporizing heating assembly 200.

[0098] In one embodiment, the coil 71 may be installed on an end face of the closed end 215 of the heating cylinder 21 by a snap-fit structure. The coil 71 is coated with an insulating layer on the outside, or a portion of the heating cylinder 21 in contact with the coil 71 is made of an insulating material, which helps reduce a distance between the heating cylinder 21 and the coil 71, and helps improve the efficiency of converting magnetic field energy into electrical energy under the condition of achieving a same heating temperature, thereby reducing the overall energy consumption of the vaporizing heating assembly 200.

[0099] In one embodiment, referring to FIG. 16, the coil 71 may also be spaced apart from the heating cylinder 21 in the extension direction of the heating cylinder 21. For example, the mounting base 11 may be provided with a support surface perpendicular to the extension direction of the heating cylinder 21. The support surface may be an end face of the plug 15 facing the sealing member 12, or a bottom wall surface of the heat-heat-insulating cylinder 14. The coil 71 can be supported and installed on the support surface of the mounting base 11 to achieve fixation and installation of the coil 71 in the mounting base 11; or in other embodiments, the coil 71 may be adhered to the end face of the closed end 215 of the heating cylinder 21 through an adhesive layer with a certain thickness, such that the coil 71 is spaced apart from the end face of the closed end 215, the heating cylinder 21 with conductive property is insulated from the coil 71, there is no need to introduce an insulating layer on the coil 71 or the heating cylinder 21 to insulate the coil 71 from the heating cylinder 21. This can also reduce a distance between the heating cylinder 21 and the coil 71, improving the efficiency of converting magnetic field energy into electrical energy.

[0100] In one embodiment, referring to FIGs. 17-18, the coil 71 is wound and arranged in a plane perpendicular to the extension direction of the heating cylinder 21. The coil 71 is a planar coil structure. The coil 71 may be a circular coil structure or, in other embodiments, a polygonal or elliptical structure. The coil 71 has an inner coil and an outer coil. In the circular coil structure, a winding radius of the inner coil is smaller than a winding radius of the outer coil. For other coil structures, winding dimensions of the inner coil are smaller than winding dimensions of the outer coil.

[0101] In other embodiments, in order to adapt to the structure of the support surface on the mounting base 11, the coil 71 may also be formed as a conical structure, and the inner coil and the outer coil may be spaced apart in the extension direction of the heating cylinder 21.

[0102] In one embodiment, a winding wire of coil 71 may have a circular cross section. In other embodiments, the winding wire may be a flat strip wire, which is wound in a thickness direction to form a structure of the entire coil 71.

[0103] In some embodiments, referring to FIG. 16, the heating cylinder 21 is arranged with a gap relative to the inner wall of the heat-insulating cylinder 14, such that the heat-insulating cylinder 14, the sealing member 12, the plug 15, and the heating cylinder 21 enclose in the cavity to form a heat-insulating cavity 33 surrounding the heating cylinder 21. The coil 71 is located in the heat-insulating cavity 33, the plug 15 forms a support surface facing an end face of the heating cylinder 21 in the extension direction of heating cylinder 21 to support the coil 71. The plug 15 is provided with a wire-through hole (not shown in the figure), the coil 71 can be electrically connected to the power supply device 104 through a lead wire passing through the wire-through hole (not shown in the figure), thereby facilitating the installation of the coil 71 in the vaporizing heating assembly 200.

[0104] In another embodiment, the heat-insulating cylinder 14 may be configured as a structure with one end open and the other closed, the mounting base 11 is not provided with the plug 15, and the heat-insulating cylinder 14, the sealing member 12, and the heating cylinder 21 enclose to form a heat-insulating cavity 33. The heat-insulating cylinder 14 has a side cylinder wall arranged surrounding the heating cylinder 21, and a bottom cylinder wall spaced apart from the heating cylinder 21 in the extension direction of the heating cylinder 21, and an inner wall surface of the bottom cylinder wall may form a support surface for supporting the coil 71.

[0105] In some other embodiments, the coil 71 may be arranged outside the heat-insulating cavity 33. For example, the coil 71 may be installed on the plug 15 by adhesive bonding or through a snap-fit connection, or connected to an outer side surface of the bottom wall of the heat-insulating cylinder 14. The heat-insulating cylinder 14 or the plug 15 is made of a plastic material to prevent the heat-insulating cylinder 14 or the plug 15 from affecting the alternating magnetic field generated when coil 71 is energized. In addition, placing the coil 71 outside the heat-insulating cavity 33 can avoid the need to form a wire-through hole in the cavity wall of the heat-insulating cavity 33, which helps ensure the sealing performance of the heat-insulating cavity 33, thereby further reducing heat loss and energy consumption.

[0106] In some embodiments, for the vaporizing heating assembly 200 using electromagnetic induction heating, at least part of the heating cylinder 21 is made of a magnetic material. The magnetic material includes SUS430 or SPCE (cold-rolled carbon steel for deep drawing) capable of generating heat in an alternating magnetic field. For example, the side wall 211 of the heating cylinder 21 may contain the magnetic material, or the bottom wall 212 of the heating cylinder 21 may contain the magnetic material, or the entire heating cylinder 21 may be made of the magnetic material. In this way, after the coil 71 is energized, part or all of the heating cylinder 21 made of the magnetic material can generate heat in the alternating magnetic field to heat the aerosol-generating article 40.

[0107] In the above embodiments, after being energized, the coil 71 can generate an alternating magnetic field, and the heating cylinder 21 generates heat in the alternating magnetic field to heat the gas flow and the aerosol-generating article 40. Since the coil 71 is located on a side of the heating cylinder 21 opposite the bottom wall 212 of the heating cylinder 21 in the extension direction of the heating cylinder 21, a distance between the coil 71 and the bottom wall 212 of the heating cylinder 21 is smaller than a distance between the coil 71 and the side wall 211 of the heating cylinder 21, such that a heating temperature of the bottom wall 212 of the heating cylinder 21 is higher than a heating temperature of the side wall 211. Therefore, the bottom wall 212 of the heating cylinder 21 serves as a primary heating part, and the side wall 211 of the heating cylinder 21 serves as an auxiliary heating part. In this way, the heat on the heating cylinder 21 is mainly concentrated at the bottom of the heating cylinder 21, which can reduce heat transfer in the extension direction of the heating cylinder 21 toward the aerosol outlet 102, thereby improving the heat utilization rate of the vaporizing heating assembly 200.

[0108] In another embodiment, the heating cylinder 21 may be made of a thermally conductive ceramic material. The heating structure 50 includes a heating element fixed to the bottom wall 212 of the heating cylinder 21 and / or the side wall 211 of the heating cylinder 21. The heating element is made of the magnetic material, and the heating element is capable of generating heat in an alternating magnetic field. Heat generated by the heating element can be directly transferred to the gas flow in the gas intake channel 31 and the gas intake chamber 32, or the heat generated by the heating element can be transferred to the gas flow in the gas intake channel 31 and the gas intake chamber 32 through the heating cylinder 21 to realize heating of the gas flow. Further, the heat generated by the heating element can be transferred to the aerosol-generating article 40 through the heating cylinder 21 to achieve heating of the aerosol-generating article 40.

[0109] In some embodiments, referring to FIG. 19, for the vaporizing heating assembly 200, the heating cylinder 21 is located in the heat-insulating cylinder 14 and is connected to the heat-insulating cylinder 14. The closed end 215 of the heating cylinder 21 is suspended inside the heat-insulating cylinder 14 and spaced apart from a cylinder wall of the heat-insulating cylinder 14. The vaporizing heating assembly 200 further includes a coil winding 81, and the coil winding 81 is disposed outside the heat-insulating cylinder 14. An axis of the coil winding 81 is arranged in the extension direction of the heating cylinder 21, and the coil winding 81 is configured to generate an alternating magnetic field that causes the heating cylinder 21 to heat up.

[0110] In some embodiments, still referring to FIG. 19, for the vaporizing heating assembly 200, the heat-insulating cylinder 14 is a cylindrical structure with both ends open in the extension direction of the heating cylinder 21. The sealing member 12 and the plug 15 of the vaporizing heating assembly 200 are sealingly engaged with the two opening ends of the heat-insulating cylinder 14, respectively. The plug 15 is located on a side of the sealing member 12 opposite to the aerosol outlet 102 of the device main device body 100 in the extension direction of the heating cylinder 21, and gas flow can pass through a gap between a channel wall of the communication channel 121 in the sealing member 12 and the aerosol-generating article 40, and enter the receiving chamber.

[0111] In another embodiment, the heat-insulating cylinder 14 may be a cylindrical structure with one end open and the other end closed in the extension direction of the heating cylinder 21. The heat-insulating cylinder 14 includes a side cylinder wall and a bottom cylinder wall, the bottom cylinder wall is located at the closed end of the heat-insulating cylinder 14 in the extension direction of the heating cylinder 21. The mounting base 11 only includes the sealing member 12 and the heat-insulating cylinder 14, and the sealing member 12 is sealingly installed at the opening end 214 of the heat-insulating cylinder 14.

[0112] The heating cylinder 21 is located in the heat-insulating cylinder 14. The outward flange 213 on the heating cylinder 21 is clamped and fixed between the sealing member 12 and a support arm 141 of the heat-insulating cylinder 14 in the extension direction of the heating cylinder 21. The side wall 211 and the closed end 215 of the heating cylinder 21 are both spaced apart from the cylinder wall of the heat-insulating cylinder 14, thereby forming a heat-insulating cavity 33 surrounding the heating cylinder 21 between the heat-insulating cylinder 14 and the heating cylinder 21. First, the structure of arranging the heat-insulating cavity 33 outside the heating cylinder 21 can reduce the heat loss of the heating cylinder 21, thereby improving the heat utilization rate of the vaporizing heating assembly 200 and reducing the energy consumption of the heat-not-burn device. Moreover, the structure of suspending the suspending end of the heating cylinder 21 inside the heat-insulating cavity 33 reduces heat transfer from the heating cylinder 21 in the extension direction away from the aerosol outlet 102 toward the vaporizing heating assembly 200 or the device main device body 100, which can further reduce heat loss of the heating cylinder 21, improve the heat utilization rate of the vaporizing heating assembly 200, and reduce energy consumption of the heat-not-burn device.

[0113] In some embodiments, the coil winding 81 of the vaporizing heating assembly 200 is disposed outside the heat-insulating cylinder 14. An axis of the coil winding 81 is arranged in the extension direction of the heating cylinder 21, and when being energized, the coil winding 81can generate an alternating magnetic field that causes the heating cylinder 21 to heat up. In this way, the aerosol-generating article 40 can be heated using the electromagnetic induction heating, it is possible to avoid a lead wire arranged on the heating cylinder 21 and extending in a direction away from the sealing member 12 in the extension direction of the heating cylinder 21, thereby preventing the heat loss caused by heat conduction along the lead wire on the heating cylinder 21, and avoiding energy consumption caused by current flowing through the lead wire. As a result, the heat utilization rate of the heating cylinder 21 and the entire vaporizing heating assembly 200 is improved, thereby reducing the energy consumption of the heat-not-burn device. Furthermore, by arranging the coil winding 81 outside the heat-insulating cylinder 14, the coil winding 81 is provided with the lead wire electrically connected to the power supply device 104 in the device main device body 100, which can prevent the lead wire from passing through the cavity wall of the heat-insulating cavity 33, thereby ensuring the sealing performance of the heat-insulating cavity 33 and avoiding heat loss caused by gas flow in the heat-insulating cavity 33, further improving the heat utilization rate of the vaporizing heating assembly 200 and reducing the energy consumption of the heat-not-burn device.

[0114] In one embodiment, still referring to FIG. 19, the coil winding 81 can be fixed to the side cylinder wall of the heat-insulating cylinder 14 by adhesive bonding or through a snap-fit connection. The coil winding 81 is coaxially arranged with the heat-insulating cylinder 14, facilitating assembly of the coil winding 81 in the vaporizing heating assembly 200.

[0115] In another embodiment, the coil winding 81 is located outside the heat-insulating cylinder 14, and the axis of the coil winding 81 may be arranged either parallel to or coaxially with an axis of the heat-insulating cylinder 14. For example, the device body 100 has a bracket for fixing the vaporizing heating assembly 200, and the coil winding 81 may be wound around the bracket.

[0116] In one embodiment, still referring to FIG. 19, the coil winding 81 is arranged around the heat-insulating cylinder 14. The coil winding 81 is formed by winding a wire with a circular cross section, or alternatively by winding a flat wire with a rectangular cross section. The coil winding 81 includes a plurality of coil units 811 arranged in the extension direction of the heating cylinder 21. Each coil unit 811 surrounds the heat-insulating cylinder 14 once. The plurality of coil units 811 arranged in the extension direction of the heating cylinder 21 are connected end to end in sequence. Wire length and winding dimensions or winding radius of each coil unit 811 are equal, thereby facilitating the winding and molding of the coil winding 81.

[0117] In some other embodiments, the device body 100 has a bracket for fixing the vaporizing heating assembly 200, and the coil winding 81 is wound around the bracket. The wire length and winding dimensions of the plurality of coil units 811 in the coil winding 81 may vary according to a shape of an outer surface of the bracket that contacts the coil winding 81. For example, the wire length and winding dimensions of the plurality of coil units 811 in the coil winding 81 may gradually decrease or increase from the receiving chamber toward the communication channel 121 in the extension direction of the heating cylinder 21, or may gradually increase first and then gradually decrease.

[0118] In one embodiment, the coil winding 81 further includes a plurality of coil segments arranged in the extension direction of the heating cylinder 21. Each coil segment may include one or more coil units 811. Two adjacent coil segments are spaced apart in the extension direction of the heating cylinder 21, and each coil segment has external connecting terminal electrically connected to the power supply device 104 in the device body 100. The power supply device 104 can be configured to control each coil segment to be energized separately, enabling separate heating of different regions of the heating cylinder 21 in the extension direction thereof. This configuration allows segmented heating of the aerosol-generating article 40, such as controlling the heating of coil segments in sequence from the receiving chamber toward the communication channel 121 in the extension direction of the heating cylinder 21, thereby ensuring continuity of the aerosol generated after the aerosol-generating article 40 is heated.

[0119] In another embodiment, the coil winding 81 may be provided with only one pair of external connecting terminals electrically connected to the power supply device 104, thereby satisfying overall heating of the heating cylinder 21.

[0120] In some embodiments, the heating cylinder 21 generates heat under the action of an alternating magnetic field. At least a portion of the heating cylinder 21 may be made of the magnetic material, for example, the entire heating cylinder 21 may be made of SUS430 or SPCE (cold-rolled carbon steel for deep drawing), or other materials capable of generating heat under the action of the alternating magnetic field, enabling the entire heating cylinder 21 to heat under the action of the alternating magnetic field. Alternatively, only the side wall 211 of the heating cylinder 21 may be made of the magnetic material, such that only the side wall 211 of the heating cylinder 21 generates heat under the action of the alternating magnetic field.

[0121] In some other embodiments, a heating element may be fixed to the side wall 211 of the heating cylinder 21. The heating element may include a heating wire or a heating film, and the heating element is fixed to the side wall 211 of the heating cylinder 21 by adhesive bonding. The heating element is made of the magnetic material, and is capable of generating heat under the action of an alternating magnetic field.

[0122] In the embodiment where the heating cylinder 21 serves as the heating element, referring to FIG. 19, a position of the coil winding 81 in the extension direction of the heating cylinder 21 corresponds to a position of the heating cylinder 21 in its extension direction, that is, the coil winding 81 is located radially outside the heating cylinder 21, and the coil units 811 in the coil winding 81 are uniformly distributed outside the heating cylinder 21 in the extension direction of the heating cylinder 21, such that the side wall 211 of the heating cylinder 21 is located in a position with a relatively strong magnetic field intensity in the coil winding 81, the side wall 211 of the heating cylinder 21 forms a primary heating part of the heating cylinder 21, and the bottom wall 212 of the heating cylinder 21 forms a secondary heating part. On the one hand, the configuration can not only ensure that the side wall 211 of the heating cylinder 21 can reach a relatively high temperature under the action of the alternating magnetic field. On the other hand, the side wall 211 of the heating cylinder 21 can heat the substrate segment of the aerosol-generating article 40 near the filter tip portion, so as to shorten aerosol generation time and waiting time for the user, thereby improving the user experience.

[0123] In one embodiment, still referring to FIG. 19, the side wall 211 of the heating cylinder 21 is arranged around the receiving chamber, and may be disposed in the extension direction of the heating cylinder 21. Dimensions of the side wall 211 of the heating cylinder 21 are less than or equal to dimensions of the coil winding 81 in the extension direction of the heating cylinder 21, which helps reduce a temperature difference of the side wall 211 of the heating cylinder 21 in the extension direction of the heating cylinder 21, improve a temperature uniformity of the side wall 211 of the heating cylinder 21, and enhance the heating uniformity of the aerosol-generating article 40. Of course, in other embodiments, it is also possible that the dimensions of the side wall 211 of the heating cylinder 21 in the extension direction of the heating cylinder 21 are greater than the dimensions of the coil winding 81 in the extension direction of the heating cylinder 21.

[0124] For example, an end of the coil winding 81 near the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21 corresponds to and is flush with the opening end 214 of the heating cylinder 21 in the extension direction of the heating cylinder 21, an end of the coil winding 81 near the closed end 215 of the heating cylinder 21 in the extension direction of the heating cylinder 21 is located on a side of the closed end 215 of the heating cylinder 21 away from the receiving chamber, or the end of the coil winding 81 near the closed end 215 of the heating cylinder 21 in the extension direction of the heating cylinder 21 corresponds to or is flush with an end of the side wall 211 of the heating cylinder 21 connected to the bottom wall 212 in the extension direction of heating cylinder 21, this configuration ensures that the side wall 211 of the heating cylinder 21 is located in a position with a relatively strong magnetic field intensity in the coil winding 81, and satisfies the dimension requirements of the side wall 211 of the heating cylinder 21 and the coil winding 81 in the extension direction of the heating cylinder 21. The structures of the coil winding 81 and the heating cylinder 21 can improve the conversion efficiency of electrical energy in the coil winding 81 and thermal energy in the heating cylinder 21.

[0125] An embodiment of the present disclosure also provides a heat-not-burn device. Referring to FIGS. 1-4, 16, and 19, the heat-not-burn device includes a device body 100 and the vaporizing heating assembly 200 described in any of the above embodiments. The device body 100 has an aerosol outlet 102, the aerosol outlet 102 is in fluid communication with the receiving chamber through the communication channel 121 of the vaporizing heating assembly 200. An aerosol-generating article 40 can be inserted into the receiving chamber from the aerosol outlet 102 along the communication channel 121. The aerosol outlet 102 can also discharge the aerosol generated after the aerosol-generating article 40 is heated.

[0126] The device body 100 includes a housing 101, a mounting chamber is formed inside the housing, the aerosol outlet 102 is formed on the housing 101, and a mounting base 11 may be clamped and fixed in the mounting chamber in the extension direction of the heating cylinder 21 to achieve installation and positioning of the vaporizing heating assembly 200 in the device body 100, and also to ensure that the communication channel 121 is coaxial with the aerosol outlet 102.

[0127] An installation space inside the housing 101 includes a vaporizing chamber. The vaporizing heating assembly 200 is located in the vaporizing chamber, and the vaporizing heating assembly 200 is supported by a bracket inside the housing 101 to achieve assembly and fixation of the vaporizing heating assembly 200.

[0128] The device body 100 of the heat-not-burn device further includes a power supply device 104 located in the mounting chamber. The power supply device 104 is electrically connected to the vaporizing heating assembly 200 through an external lead wire 22, so as to supply power to the vaporizing heating assembly 200 through the power supply device 104. An electrical cavity may also be separately formed in the housing 101 for installing the power supply device 104.

[0129] The above embodiments are merely illustrative of the present disclosure and are intended to help understand the present disclosure but should not be construed as limiting the present disclosure. Those skilled in the art to which the present disclosure belongs can make several simple deductions, variations or substitutions according to the ideas of the present disclosure.

Examples

Embodiment Construction

[0028]The present disclosure will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are labeled with associated similar element labels. In the following embodiments, more details are described to facilitate clearer understanding of the present disclosure. However, those skilled in the art can readily recognize that some of the features can be omitted in different cases, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present disclosure are not shown or described in the specification, with the aim of preventing the important part of the present disclosure from being overwhelmed by excessive description, and for those skilled in the art, it is unnecessary to describe these related operations in detail, and they can gain a thorough understanding of the related operations according to the description in the specification and the gener...

Claims

1. A vaporizing heating assembly, comprising a heating cylinder having one end open and the other end closed, wherein a side wall and a bottom wall of the heating cylinder enclose to form a receiving chamber, and the receiving chamber is configured to accommodate an aerosol-generating article; a support protruding portion facing the receiving chamber is arranged on the bottom wall or the side wall; and the support protruding portion is configured to support the aerosol-generating article, thereby forming a gas intake chamber between the aerosol-generating article and the bottom wall; and the side wall is provided with a contact protruding portion and a recessed portion; and the contact protruding portion is arranged facing the receiving chamber, the contact protruding portion is configured to be in heat-conducting contact with an outer circumferential surface of the aerosol-generating article, and the recessed portion is configured to form a gas intake channel together with the outer circumferential surface of the aerosol-generating article, and an aerosol outlet is in fluid communication with the gas intake chamber through the gas intake channel.

2. The vaporizing heating assembly according to claim 1, wherein the contact protruding portion comprises a contact rib, and the contact rib extends in an axial direction of the heating cylinder; and a plurality of the contact ribs are provided, two adjacent contact ribs are spaced apart in a circumferential direction of the heating cylinder, one recessed portion is formed between the two adjacent contact ribs, and the gas intake channels extend in the axial direction of the heating cylinder.

3. The vaporizing heating assembly according to claim 2, wherein each support protruding portion comprises a support rib, a plurality of the support ribs are provided, a communication gap is formed between two adjacent support ribs, and the gas intake channels are in fluid communication with the gas intake chamber through the communication gap.

4. The vaporizing heating assembly according to any one of claims 1-3, comprising a mounting base, wherein the heating cylinder is suspended inside the mounting base, an outward flange is disposed at an opening end of the heating cylinder away from the receiving chamber, and the outward flange abuts against the mounting base in the axial direction of the heating cylinder.

5. The vaporizing heating assembly according to claim 4, wherein the mounting base comprises a heat-insulating cylinder and a sealing member; the heating cylinder is located in the heat-insulating cylinder and is coaxially arranged with the heat-insulating cylinder, the side wall of the heating cylinder is spaced apart from the heat-insulating cylinder, the sealing member is sealingly engaged with an opening of the heat-insulating cylinder, and the sealing member has a communication channel that is in fluid communication with the receiving chamber; and a support portion extending toward the heating cylinder is disposed on a cylindrical wall of the heat-insulating cylinder, and the outward flange is clamped between the support portion and the sealing member in an extension direction of the heating cylinder.

6. The vaporizing heating assembly according to any one of claims 1-3, wherein the heating cylinder is formed of a conductive ceramic structure, and a positive electrode connection portion and a negative electrode connection portion configured to be connected to an external lead wire are arranged on an outer circumferential surface of the heating cylinder.

7. The vaporizing heating assembly according to any one of claims 1-3, further comprising a heating structure and a substrate layer, wherein an outward flange protruding in a radial direction of the heating cylinder is disposed at an opening end of the heating cylinder, the substrate layer is fixed to the side wall of the heating cylinder between the outward flange and a bottom of the heating cylinder, and the heating structure is fixed to the substrate layer.

8. The vaporizing heating assembly according to claim 7, wherein the heating structure comprises a first heating member and a second heating member that are connected in parallel; and the first heating element and the second heating element are respectively fixed to the substrate layer in an extension direction of the heating cylinder; and the first heating member forms at least one layer of first heating ring in the circumferential direction of the heating cylinder, and the second heating member forms at least one layer of second heating ring in the circumferential direction of the heating cylinder.

9. The vaporizing heating assembly according to any one of claims 1-3, further comprising a heating structure, wherein the heating structure is located outside the heating cylinder and fixed to the side wall; the heating structure is configured to heat the heating cylinder, thereby radiating infrared rays into the receiving chamber and heating gas flowing through the gas intake channels to generate hot gas flow, so that the aerosol-generating article inserted into the receiving chamber is heated by both the infrared rays and the hot gas flow.

10. The vaporizing heating assembly according to any one of claims 1-3, further comprising a heating structure, wherein the heating structure comprises a heat-shrinkable tube and a heating circuit body; heat generated by the heating circuit body is transferred into the receiving chamber through the heating cylinder, and the heating circuit body has a sleeve-shaped sleeve joint portion; both the sleeve joint portion and the heat-shrinkable tube are sleeved on a periphery of the heating cylinder, and the sleeve joint portion is sandwiched between the heating cylinder and the heat-shrinkable tube; and the heat-shrinkable tube is configured to apply fixing force from a circumferential direction of the sleeve joint portion onto the heating circuit body to prevent the heating circuit body from being separated from the heating cylinder.

11. The vaporizing heating assembly according to any one of claims 1-3, comprising a mounting base, wherein the heating cylinder is mounted in the mounting base, a closed end of the heating cylinder in the extension direction of the heating cylinder is suspended inside the mounting base, and is spaced apart from the mounting base; and the vaporizing heating assembly further comprises a coil, wherein the coil is located on a side of the closed end of the heating cylinder away from the receiving chamber in the extension direction of the heating cylinder; the coil comprises an inner coil and an outer coil, a winding size of the inner coil is smaller than a winding size of the outer coil; and the coil is configured to generate an alternating magnetic field, and the heating cylinder is configured to be inductively coupled to the coil to generate heat in the alternating magnetic field.

12. The vaporizing heating assembly according to any one of claims 1-3, comprising a heat-insulating cylinder arranged in the extension direction of the heating cylinder; the heating cylinder is located inside the heat-insulating cylinder and is connected to the heat-insulating cylinder; and the closed end of the heating cylinder is suspended inside the heat-insulating cylinder and spaced apart from a cylinder wall of the heat-insulating cylinder; and the vaporizing heating assembly further comprises a coil winding, wherein the coil winding is disposed outside the heat-insulating cylinder; and an axis of the coil winding is arranged in the extension direction of the heating cylinder, and the coil winding is configured to generate an alternating magnetic field that causes the heating cylinder to heat up.

13. The vaporizing heating assembly according to any one of claims 1-3, comprising a mounting base, wherein the heating cylinder is mounted in the mounting base; and further comprising a reflective heat-insulating layer, wherein the reflective heat-insulating layer is disposed between the mounting base and the heating cylinder, and surrounds an outer surface of the heating cylinder.

14. A heat-not-burn device, comprising a device body and the vaporizing heating assembly of any one of the claims 1-13; wherein the device body comprises an aerosol outlet for inserting an aerosol-generating article; and the vaporizing heating assembly is mounted in the device body, a receiving chamber is in fluid communication with the aerosol outlet, and a bottom wall of the heating cylinder is spaced apart from the device body.

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