Aerosol generator and heat-generating assembly

Abstract

The present invention relates to an aerosol generator and a heating assembly. The heating assembly includes a heating unit that generates infrared waves when energized and a sleeve tube through which the infrared waves pass. The heating unit includes a heating base, an antioxidant layer on the outer surface of the heating base to prevent oxidation of the heating base, and an infrared emitting layer on the side of the antioxidant layer away from the heating base. A non-hermetically sealed cavity is formed within the sleeve tube to accommodate the heating unit. The provision of the antioxidant layer on the outer surface of the heating base of the heating unit prevents oxidation of the heating base, allowing the sleeve tube to have a non-hermetically sealed cavity for accommodating the heating unit. This eliminates the need to seal the sleeve tube, evacuate it, or fill it with an inert gas, simplifying the assembly process and reducing manufacturing costs.

Description

Technical Field

[0005]

[0001] The present invention relates to the field of heat non-combustion atomization, and more specifically, to an aerosol generating device and a heating assembly.

Background Art

[0002] In the field of HNB (heat non-combustion) atomization, generally, heating methods such as central heating element heating or peripheral heating element heating are adopted. Usually, the heating element generates heat, and then the heat is directly transmitted to a medium such as an aerosol-forming substrate by heat conduction. The medium is generally atomized within 350°C. The drawback of this heating method is that the heating element directly or indirectly conducts heat to a medium such as an aerosol-forming substrate through a solid material. Therefore, it is necessary that the operating temperature of the heating element is not too high. If it is too high, the medium may overburn or the solid material may generate abnormal odors, which may affect the mouthfeel of the e-cigarette.

[0003] In related technologies, there is a heating assembly that generates heat radiation for heating, and the operating temperature of its heating element can reach about 400°C. However, when the heating element operates at a high temperature, oxidation problems will occur in all of its base materials, the resistance value of the heating element will change greatly, and the heating stability will be affected. To solve the oxidation problem, it is common to evacuate the sealed mounting space or fill it with an inert gas, but the process is not only complicated but also has a high manufacturing cost.

Summary of the Invention

[0004] An object of the present invention is to provide an improved heating assembly and further an improved aerosol generating device.

[0005] The technical solution adopted by the present invention to solve the technical problem is to constitute a heating assembly as follows. The heating assembly includes a heating part that generates infrared waves in an energized state and a sleeve tube for the infrared waves to transmit through. The heat-generating portion includes a heat-generating substrate, an antioxidant layer provided on the outer surface of the heat-generating substrate to prevent oxidation of the heat-generating substrate, and an infrared radiation layer provided on the side of the antioxidant layer away from the heat-generating substrate. An unsealed housing cavity for accommodating the heating element is formed inside the sleeve pipe, and at least a portion of the heating element is positioned at a distance from the wall of the sleeve pipe.

[0006] In some embodiments, the antioxidant layer includes an oxide film, which is formed on the outer surface of the heat-generating substrate.

[0007] In some embodiments, the thickness of the antioxidant layer is 1 μm to 150 μm.

[0008] In some embodiments, an air gap remains between the inner wall of the housing cavity and the heat-generating section.

[0009] In some embodiments, the sleeve tube includes a hollow tubular body. The aforementioned housing cavity is formed inside the tubular body, An opening is provided at one end of the tubular body.

[0010] In some embodiments, two conductive parts are connected to the heating element, and both conductive parts pass through the opening.

[0011] In some embodiments, the sleeve tube includes a apex structure, which is located at one end of the tubular body away from the opening.

[0012] In some embodiments, there are two conductive parts, and the two conductive parts are spaced apart. The heating assembly further includes an insulating member that is at least partially provided within the sleeve tube and provides insulating arrangement of the two conductive parts.

[0013] In some embodiments, a support base is further included to support the heating element and the sleeve pipe. The sleeve pipe is inserted at least partially into the support base.

[0014] In some embodiments, the support base is provided with a conductive member connected to the conductive part.

[0015] In some embodiments, the support base includes a bracket for supporting the sleeve pipe and a sealing member. The sealing member is fitted onto a portion of the sleeve pipe and seals the gap between the inner wall of the bracket and the outer wall of the sleeve pipe.

[0016] In some embodiments, the sealing member has a hollow structure with both ends passing through, and a passage is formed on the inside through which the sleeve pipe is provided.

[0017] In some embodiments, the sealing member includes a sleeve body whose ends penetrate and are fitted onto a portion of the sleeve pipe, and a first sealing portion provided protruding from the outer wall of the sleeve body. The first sealing portion is locked and connected to the bracket and fixed in place.

[0018] In some embodiments, the support base includes an outer casing fitted onto the outer circumference of the bracket and having a sleeve connection port that cooperates with the bracket. The bracket includes a bottom wall, and a gap remains between the sleeve connection port and the bottom wall.

[0019] In some embodiments, the outer casing is detachably fitted onto the bracket, The outer casing includes the sleeve pipe A through-hole is provided for part of it to pass through.

[0020] In some embodiments, the sealing member is before The second sealing portion is provided protruding from the outer wall of the sleeve body. ofIt further includes. The second sealing portion is located between the bracket and the outer casing in a state where the outer casing and the bracket are assembled, and is used to seal a gap formed between the bracket and the end face of the through hole.

[0021] In some embodiments, the sleeve tube is made of infrared-transmitting glass, transparent ceramic or diamond.

[0022] In some embodiments, the Heat-generating part as a whole is arranged at an interval from the tube wall of the sleeve tube.

[0023] In some embodiments, the <​​​​​​​​​​​​​​​​​​​​Furthermore, by providing an infrared radiation layer on the outer surface of the heating element, when the heating element generates heat while energized, this heat excites the infrared radiation layer, causing it to emit infrared waves. These infrared waves penetrate the sleeve tube and reach the aerosol-forming substrate, heating it. When the maximum operating temperature of the heating element reaches 1000°C or higher (the operating temperature of conventional HNB heating elements generally does not exceed 400°C), it prevents over-combustion of the aerosol-forming medium, thereby significantly improving the smoking experience. At the same time, in high-temperature operating conditions, the preheating time is significantly reduced, greatly improving the consumer experience. [Brief explanation of the drawing]

[0029] The present invention will be further described below with reference to the attached drawings and embodiments. In the figures: [Figure 1] This is a schematic diagram of the structure of an aerosol generator according to the first embodiment of the present invention. [Figure 2] Figure 1 is a schematic diagram of the heat generation assembly of the aerosol generator shown. [Figure 3] Figure 2 is a first longitudinal cross-sectional view of the heating assembly shown. [Figure 4] Figure 2 is a second longitudinal cross-sectional view of the heating assembly shown in Figure 2. [Figure 5] Figure 2 is a third longitudinal cross-sectional view of the heating assembly shown. [Figure 6] Figure 2 is a schematic diagram of the exploded structure of the heat-generating assembly. [Figure 7] Figure 2 is a schematic diagram of the bottom structure of the heat-generating assembly. [Figure 8] Figure 6 is a cross-sectional view of the heating element of the heating assembly shown in Figure 6. [Figure 9] This is a cross-sectional view of the heating element of the aerosol generator in the second embodiment of the present invention. [Figure 10] This is a cross-sectional view of the heating element of the aerosol generator in the third embodiment of the present invention. [Modes for carrying out the invention]

[0030] In order to more clearly understand the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will be described in detail with reference to the drawings.

[0031] Figure 1 shows a first embodiment of the aerosol generator of the present invention. The aerosol generator 100 can heat the aerosol-forming substrate by a low-temperature, non-combustion heating method, and has good atomization stability and a pleasant mouthfeel. In some embodiments, the aerosol-forming substrate may be inserted into and removed from the aerosol generator 100. The aerosol-forming substrate may be cylindrical, and more specifically, the aerosol-forming substrate may be a thread-like or sheet-like solid material consisting of plant leaves and / or stems, and aroma components may be further added to the solid material.

[0032] As shown in Figures 1 and 2, in this embodiment, the aerosol generator 100 further includes a heating assembly 10 and a power supply assembly 20. The power supply assembly 20 includes a power supply case 21. The heating assembly is housed in the power supply case 21 and may be partially inserted into the aerosol-forming substrate, specifically, a portion thereof may be inserted into a medium segment of the aerosol-forming substrate, and when energized, it can generate infrared radiation to heat the medium segment of the aerosol-forming substrate, atomize it, and produce an aerosol. The heating assembly 10 has advantages such as being easy to assemble, having a simple structure, high atomization efficiency, high stability, and a long service life. The power supply assembly 20 is mechanically and / or electrically connected to the heating assembly 10 and is used to supply power to the heating assembly 10.

[0033] In this embodiment, the heating assembly 10 includes a heating structure 11 and a support base 12. The heating structure 11 is mounted on the support base 12. In this embodiment, the heating structure 11 and the support base 12 are detachably mounted, thereby facilitating replacement and maintenance of the heating structure 11. The support base 12 can be mechanically and electrically connected to the heating structure 11, not only to support the heating structure 11, but also electrically connected to the heating structure 11 when it is mounted thereon, thereby electrically connecting the heating structure 11 to the power supply assembly 20. In some other embodiments, the support base 12 may serve only a support role.

[0034] As shown in Figures 3 to 5, in this embodiment, the heating structure 11 includes a sleeve tube 111 and a heating element 112. The sleeve tube 111 is at least partially inserted into the support base 12 and covers at least a portion of the heating element 112, allowing light waves to pass through and reach the aerosol-forming substrate. Specifically, in this embodiment, the sleeve tube 111 allows infrared waves to pass through, thereby facilitating the heating element 112 to radiate heat and heat the aerosol-forming substrate. Specifically, in this embodiment, the entire heating element 112 is positioned at a distance from the tube wall of the sleeve tube 111, leaving an air gap between the inner wall of the sleeve tube 111 and the heating element 112. When energized, the heating element rapidly heats up to 1000 to 1300°C in 1 to 3 seconds, while the surface temperature of the sleeve tube 111 can be controlled to 350°C or less. The atomization temperature of the entire aerosol-forming substrate is controlled to 300-350°C, and the aerosol-forming substrate is precisely atomized mainly in the wavelength range of 2-5 μm. The maximum operating temperature of the heating element of the present invention is 500°C-1300°C, which is much higher than the maximum operating temperature of conventional heating elements.

[0035] In this embodiment, the sleeve tube 111 may be a quartz glass tube. Naturally, in some other embodiments, the sleeve tube 111 may not be limited to a quartz tube, but may be other window materials that allow light waves to pass through, such as infrared-transmitting glass, transparent ceramic, or diamond.

[0036] As shown in Figures 6 to 8, in this embodiment, the sleeve tube 111 is a hollow tubular shape. Specifically, the sleeve tube 111 includes a tubular body 1111 having a circular cross-section and a apex structure 1112 provided at one end of the tubular body 1111. Naturally, it can be understood that in some other embodiments, the cross-section of the tubular body 111 is not limited to a circular shape. The tubular body 1111 is a hollow structure with an opening 1110 at one end. The apex structure 1112 is provided at the end of the tubular body 1111 away from the opening 1110. By providing the apex structure 1112, at least a portion of the heating structure 111 is made easier to insert into and remove from the aerosol-forming substrate. In this embodiment, a housing cavity 1113 is formed inside the sleeve tube 111, and the housing cavity 1113 is a columnar cavity that can be arranged in an unsealed manner. The air inside the containment cavity 1113 is able to communicate with the atmosphere outside the appliance. Once the heating element 112 is attached to it, the containment cavity 1113 does not need to be evacuated or filled with inert gas. In this embodiment, the sleeve tube 111 further includes a positioning portion 1114. The positioning portion 1114 is positioned in the opening 1110 of the tubular body 111, extends outward along the radial direction of the tubular body 111, and can form a positioning flange for positioning the attachment of the sleeve tube 111 to the support base 12. In this embodiment, the positioning portion 1114 may be integrally molded with the tubular body 111. Naturally, in some other embodiments, it can be understood that the positioning portion 1114 may be detachably assembled to the sleeve tube 111, for example, by sleeve connection, screwing or locking. In this embodiment, an air gap remains between the inner wall of the sleeve tube 111 and the heating element 112, and this air gap can be provided for air filling. By leaving an air gap, direct contact between the sleeve pipe 111 and the heating element 112 can be prevented.

[0037] In this embodiment, the heating element 112 may be a single element, arranged vertically, or wound to form a spiral heating element 1120 as a whole. Specifically, the heating element 112 may be cylindrical as a whole, or wound to form a single-helix structure, a double-helix structure, an M-shaped structure, an N-shaped structure, or other shapes. Naturally, in some other embodiments, the heating element 112 is not limited to one element, but may be two or more, and the shape of the heating element 112 is not limited to a cylindrical shape, and in some embodiments, the shape of the heating element 112 may be sheet-like.

[0038] In this embodiment, the heating element 1120 may be placed inside the sleeve tube 111, spaced apart from the inner wall of the sleeve tube 111, and used to generate infrared radiation, i.e., infrared waves, when energized. These infrared waves can pass through the sleeve tube 111 and reach the aerosol-forming substrate. In this embodiment, the heating element 1120 may be elongated and spiral in shape. Naturally, it can be understood that in some other embodiments, the heating element 1120 is not limited to a spiral shape.

[0039] In this embodiment, a conductive portion 1121 is provided at one end of the heating portion 1120, and the conductive portion 1121 can be connected to the heating portion 1120, drawn out from the opening 1110 of the sleeve tube 111, and passed through the base 113 to be electrically connected to the power supply assembly 20. In this embodiment, the conductive portion 1121 may be fixed to the heating portion 1120 by welding to form an integral structure. Naturally, it can be understood that in some other embodiments, the heating portion 1120 may be integrally molded with the conductive portion 1121. In this embodiment, there may be two conductive portions 1121. The two conductive portions 1121 may be spaced apart, each connected to both ends of the heating portion 1120, and both may extend to the same end and pass through the sleeve tube 111 from the opening 1110 at one end of the sleeve tube 111. In this embodiment, the conductive portion 1121 may be a lead wire and may be welded to the heating portion 1120. Naturally, in some other embodiments, it can be understood that the conductive part 1121 is not limited to a lead wire and may be other conductive structures. By placing the conductive part 1121 at one end of the heating element 1120 and leading it out from the sleeve tube 111, the assembly of the entire heating element 11 can be facilitated and the assembly process can be simplified. During assembly, the heating element 11 can be mounted on the support base 12 and then brought into contact with the conductive member 124 located on the support base 12.

[0040] In this embodiment, the heating element 112 forming the heating section 1120 includes a heating substrate 1122 and an infrared radiation layer 1124. The heating substrate 1122 can generate heat when energized. The infrared radiation layer 1124 is arranged on the outer surface of the heating substrate 1122 and is excited by heating of the heating substrate 1122 to emit infrared waves. In this embodiment, the heating substrate 1122 and the infrared radiation layer 1124 are distributed concentrically in the cross-section of the heating section 1120.

[0041] In this embodiment, the heating element 1122 may be cylindrical overall, and specifically, the heating element 1122 may be a heating wire. Naturally, in some other embodiments, the heating element 1122 is not limited to a cylindrical shape, but may be sheet-like, that is, the heating element 1122 may be a heating sheet. The heating element 1122 includes a metal substrate having high-temperature oxidation resistance. The metal substrate may be a metal wire. Specifically, the heating element 1122 may be a metal material having good high-temperature oxidation resistance, high stability, and resistance to deformation, such as a nickel-chromium alloy substrate (e.g., nickel-chromium alloy wire) or an iron-chromium-aluminum alloy substrate (e.g., iron-chromium-aluminum alloy wire). In this embodiment, the radial dimension of the heating element 1122 may be 0.15 mm to 0.8 mm.

[0042] In this embodiment, the heating element 112 further includes an antioxidant layer 1123, which is formed between the heating substrate 1122 and the infrared radiation layer 1124. Specifically, the antioxidant layer 1123 may be an oxide film. The heating substrate 1122 is subjected to high-temperature treatment to form a dense oxide film on its own surface, and this oxide film forms the antioxidant layer 1123. Naturally, in some other embodiments, the antioxidant layer 1123 is not limited to including an oxide film formed by itself, and in some other embodiments, it may be an antioxidant coating applied to the outer surface of the heating substrate 1122. By forming the antioxidant layer 1123, it is ensured that the heating substrate 1122 is not oxidized or is hardly oxidized when heated in an air environment, thereby improving the stability of the heating substrate 1122. As a result, there is no need to evacuate the containment cavity 1113 or fill it with an inert or reducing gas, and there is no need to close the opening 1110, simplifying the assembly process of the entire heating structure 11 and saving manufacturing costs. In this embodiment, the thickness of the antioxidant layer 1123 can be selected in the range of 1 μm to 150 μm. If the thickness of the antioxidant layer 1123 is less than 1 μm, the heating substrate 1122 is more susceptible to oxidation. If the thickness of the antioxidant layer 1123 exceeds 150 μm, it affects the heat conduction between the heating substrate 1122 and the infrared radiation layer 1124.

[0043] In this embodiment, the infrared radiation layer 1124 may be an infrared layer. The infrared layer may be formed on the side of the antioxidant layer 1123 away from the heat-generating substrate 1122 by high-temperature heat treatment of the infrared layer-forming substrate. In this embodiment, the infrared layer-forming substrate may be silicon carbide, spinel, or a composite substrate thereof. Naturally, it can be understood that in some other embodiments, the infrared radiation layer 1124 is not limited to an infrared layer. In some other embodiments, the infrared radiation layer 1124 may be a composite infrared layer. In this embodiment, the infrared layer may be formed on the side of the antioxidant layer 1123 away from the heat-generating substrate 1122 by methods such as dipping, spraying, or brushing. The thickness of the infrared radiation layer 1124 may be 10 μm to 300 μm. When the thickness of the infrared radiation layer 1124 is 10 μm to 300 μm and its thermal radiation effect is improved, the atomization efficiency and mouthfeel of the aerosol-forming substrate are improved. Naturally, it can be understood that in some other embodiments, the thickness of the infrared radiation layer 1124 is not limited to 10 μm to 300 μm.

[0044] In this embodiment, the heating assembly 11 further includes an insulating member 113. The insulating member 113 is cylindrical, and its radial dimension may be smaller than the radial dimension of the housing cavity 1113. The insulating member 113 can be fully or partially inserted into the housing cavity 1113 from the opening 1110 of the sleeve tube 111, thereby isolating the two conductive parts 1121, i.e., insulating the two conductive parts 1121. In this embodiment, the insulating member 113 is provided with two perforations 1131. The two perforations 1131 are provided in one-to-one correspondence with the two conductive parts 1121. The perforations 1131 extend along the axial direction of the insulating member 113 and are used for the conductive parts 1121 to pass through and be electrically connected to the support base 12. In some embodiments, the insulating member 113 is not limited to a cylindrical shape. In some embodiments, the insulating member 113 may be an insulating partition plate, and the perforation 1131 may be omitted. In some embodiments, the insulating member 113 may be a ceramic body, a quartz tube, or other insulating structure.

[0045] Furthermore, as shown in Figures 3 to 7, in this embodiment, the support base 12 can support the sleeve pipe 111 and the heating element 1120, and includes a bracket 121, an outer casing 122, and a sealing member 123. The bracket 121 is used to support the heating structure 11. The outer casing 122 may be fitted onto the outer circumference of the bracket 121. The sealing member 123 may be attached to the bracket 121 to seally connect the heating structure 11 to the bracket 121 and the housing 122.

[0046] In this embodiment, the bracket 121 includes a first bracket body 121a and a second bracket body 121b that are provided to be openable and closable. By providing the first bracket body 121a and the second bracket body 121b to be openable and closable, the heat generation structure 11 can be easily attached and detached. In some embodiments, the first bracket body 121a and the second bracket body 121b can be joined to form a rectangular parallelepiped structure. Naturally, in some other embodiments, the joint between the first bracket body 121a and the second bracket body 121b is not limited to a rectangular parallelepiped shape, and in some other embodiments, the joint between the first bracket body 121a and the second bracket body 121b may be cylindrical or have other shapes.

[0047] In this embodiment, the first bracket body 121a and the second bracket Main unit An end plate 1210 is provided at one end of 121b, and the first bracket body 121a and the second bracket Main unit Each of the 121b is provided with a corresponding partition plate 1212. The partition plate 1212 divides the bracket 121 into two spaces, upper and lower. The space provided close to the end plate 1210 forms a locking groove 1211 that cooperates with the sealing member 123. The partition plate 1212 is provided with a semi-cylindrical first avoidance hole 1216. The first bracket Main unit 121a and the second bracket Main unit The two partition plates 1212 of 121b are positioned opposite each other, and the first avoidance holes 1216 are joined together to form the first via holes through which the heating structure 11 is drilled.

[0048] In this embodiment, the bracket 121 further includes a bottom wall 1213, and the bottom wall 1213 is the first bracket Main unit It is positioned at 121a. Naturally, in some other embodiments, the bottom wall 1213 is the first bracket Main unit The second bracket is not limited to being placed on 121a. Main unit It may be placed at 121b.

[0049] In this embodiment, the support base 12 is provided with an isolation member 1215. Specifically, the isolation member 1215 is positioned protruding from the bottom wall 1213, is integrally molded with the bottom wall 1213, may be a rib plate, and is used to isolate two adjacent conductive parts 1121 and to position the two conductive parts 1121 in an insulating manner.

[0050] In this embodiment, the first bracket body 121a and the second bracket Main unit 121b includes a position-restricting barrier plate 1216 that restricts the position of the heating structure 11. The position-restricting barrier plate 1216 is positioned below the partition plate 1212 and spaced apart from the partition plate 1212. The position-restricting barrier plate 1216 is provided with a semi-cylindrical second avoidance hole 1217. First bracket Main unit 121a and the second bracket Main unit When 121b is joined, the two second avoidance holes 1217 in the two position limiting barrier plates 1216 are joined to form a second via hole. This second via hole is used for the passage of the heating structure 11. Since the radial dimension of the second via hole is smaller than the radial dimension of the positioning portion 1114 at one end of the sleeve tube 111, it can work in cooperation with the positioning portion 1114 to position the heating structure 11.

[0051] In this embodiment, the outer casing 122 is fitted onto the outer circumference of the bracket 121 after the heating structure 11 and the bracket 121 have been assembled, and the first bracket body 121a and the second bracket Main unit The bracket 121b serves to fix the heat-generating structure 11 and the support base 12 to each other, forming an integrated structure. In this embodiment, the shape and dimensions of the outer casing 122 can be adapted to the bracket 121. In this embodiment, the outer casing 122 is a hollow structure with a roughly rectangular parallelepiped shape and a sleeve connection port 1221 at one end. A gap 1220 remains between the sleeve connection port 1221 and the bottom wall 1213, thereby preventing aerosols remaining inside the power supply case 21 from condensing and forming a condensate, which would affect the normal operation of the heat-generating structure 11.

[0052] In this embodiment, the outer casing 122 can be detachably connected to the bracket 121. Specifically, in this embodiment, a connecting structure 125 is provided between the outer casing 122 and the bracket 121, and the outer casing 122 and the bracket 121 are detachably connected via the connecting structure 125. In this embodiment, the connecting structure 125 includes a locking hole 1222 and a locking projection 1214. The locking projection 1214 is positioned to protrude from the outer wall of the bracket 121. Specifically, there are two locking projections 1214, and these two locking projections 1214 are positioned in a one-to-one correspondence with the outer walls of the first bracket body 121a and the second bracket body 121b. There are two locking holes 1222 located on the side wall of the outer casing 122. These two locking holes 1222 are positioned in a one-to-one correspondence with the two locking projections 1214. Once the outer casing 122 and the bracket 121 are assembled, the locking projection 1214 can engage with the locking hole 1222, thereby connecting and fixing the outer casing 122 and the bracket 121.

[0053] In this embodiment, a stopper wall 1223 is provided on the side of the outer casing 122 facing the sleeve connection port 1221, and a through hole 1224 is provided in the outer casing 122. Specifically, the through hole 1224 is located in the stopper wall 1223, allowing a part of the heating structure 11 to pass through.

[0054] In this embodiment, the sealing member 123 is detachably positioned between the first bracket body 123a and the second bracket body 123b, and is detachably fitted onto the heating structure 11. Specifically, it is fitted onto the outer circumference of a portion of the sleeve tube 111, enabling a sealed connection between the heating structure 11 and the first bracket body 121a and the second bracket body 121b. In this embodiment, the sealing member 123 may be made of silicone, which prevents vibration and avoids damage to the sleeve tube 111 when it is assembled with the bracket 121. Naturally, it can be understood that in some other embodiments, the sealing member 123 is not limited to a silicone material.

[0055] In this embodiment, the sealing member 123 has a hollow structure with both ends passing through, and a passage 1230 may be formed inside. The passage 1230 can be used to drill the sleeve pipe 11. In this embodiment, the sealing member 123 includes a sleeve body 1231, a first sealing portion 1232, and a second sealing portion 1233. The sleeve body 1231 is cylindrical, has a hollow structure with both ends passing through, and is intended to be fitted onto a part of the heating structure 11. The first sealing portion 1232 and the second sealing portion 1233 are arranged projecting from the outer wall of the sleeve body 1231 and are spaced apart along the axial direction of the sleeve body 1231. The first sealing portion 1232 may be arranged along the circumferential direction of the sleeve body 1232 and may be substantially annular. The first sealing portion 1232 is engaged and fixed to the first bracket body 121a and the second bracket body 121b, respectively. Specifically, the first sealing portion 1232 can engage with the locking grooves 1211 of the first bracket body 121a and the second bracket body 121b, respectively. The second sealing portion 1233 is positioned protruding from the outer wall of the sleeve body 1231 and may be substantially annular in shape, with a radial dimension greater than the radial dimension of the first sealing portion 1232. The second sealing portion 1233 may be positioned on the side away from the locking grooves 1211 of the end walls 1210 of the first bracket body 121a and the second bracket body 121b. When the outer casing 12 and the bracket 121 are assembled, the second sealing portion 1233 is located between the outer casing 122 and the bracket 121, specifically between the stopper wall 1223 and the end wall 1210, and is used to seal the gap formed between the bracket 121 and the end face of the through hole 1224. In this embodiment, the sleeve body 1231, the first sealing portion 1232, and the second sealing portion 1233 are integrally molded structures, forming multiple sealing structures. That is, by providing the sealing member 123, sealing between the outer casing 122, the heat-generating structure 11, and the bracket 121 can be achieved, thereby simplifying the process, saving manufacturing costs, and preventing condensate from flowing into the bracket 121.

[0056] In this embodiment, the support base 12 is provided with a plurality of conductive members 124, specifically, the conductive members 124 are arranged in a one-to-one correspondence with the conductive part 1121. Naturally, in some other embodiments, there may be only one conductive member 124. The conductive member 124 may also be an electrode column. The plurality of conductive members 124 are arranged at intervals on the bottom wall 1213 and are detachably connected to the conductive part 1121. Specifically, with the heating structure 11 attached to the support base 12, the conductive part 1121 may be wound around the conductive member 124 and further electrically connected to the conductive member 124. In this embodiment, the conductive member 124 can achieve an electrically connected connection with the power supply in the power supply assembly 20 by contact, thereby electrically connecting the heating structure 11 to the power supply assembly 20 and facilitating the replacement of the heating element 122 when the heating element 112 reaches the end of its service life. In this embodiment, the conductive member 124 may be in two groups, one group of which may be electrically connected to the heating structure 11 and the other group of which may be connected to the temperature measuring structure 13. Naturally, in some other embodiments, the conductive member 124 may be in one group, and the heating structure 11 and the temperature measuring structure 13 may share one group of conductive member 124.

[0057] In this embodiment, the heating assembly 10 further includes a temperature measuring structure 13. The temperature measuring structure 13 is positioned on the heating structure 11 and can be detachably connected to a support base 12. In this embodiment, the temperature measuring structure 13 can be fitted onto the outer circumference of a portion of the sleeve tube 111 and can be detachably connected to a conductive member 124 on the support base 12, thereby enabling a conductive connection when connected. In this embodiment, the temperature measuring structure 13 is fitted onto a position corresponding to where the sleeve tube 111 is connected to the heating portion 1120 and the conductive portion 1121, and includes a temperature measuring film 131 and lead wires 132. The temperature measuring film 131 can be fitted onto the outer wall of the sleeve tube 111. There are two lead wires 132, which are spaced apart, with one end of each connected to the temperature measuring membrane 131 and the other end connected to a conductive member 132 on the support base 12, which can be wound around the corresponding conductive member 132 to enable electrical connection and signal transmission. In some embodiments, the lead wires 132 can be welded or crimped to the temperature measuring membrane 131.

[0058] During the assembly of the heating assembly 10, first the temperature measuring structure 13 is fitted onto the outer circumference of the sleeve tube 111, then the sealing member 123 is fitted onto the sleeve tube 111 of the heating structure 11, the first bracket body 121a is locked to the first sealing portion 1232 of the sealing member 123, and then the conductive portion 1121 of the heating structure 11 and the lead wires 132 of the temperature measuring structure 13 are wound around the corresponding conductive member 124, and the second bracket body 121b is locked to the second sealing portion The sealing portion 1232 is engaged, and finally, the entire structure formed by the bracket 121 and the heating structure 11 is inserted through the sleeve connection port 1221 of the outer casing 122, causing the second sealing portion 1233 to come into contact with the stopper wall 1223 of the outer casing 1222 and the end wall 1210 of the bracket 121, allowing the sealing member 123 and a part of the heating structure 11 to pass through the through hole 1224, while simultaneously engaging the locking projection 1214 on the outside of the bracket 121 with the outer casing 122 Sleeve connection portThis is connected to 1221. If it is necessary to remove the heating structure 11, the outer casing 122 is pushed out in the direction in which the apex structure 1112 of the heating structure 11 is provided, and then the first bracket body 121a and the second bracket body 121b are separated from the sealing member 123, and the connection between the conductive part 1121 and the lead wire 132 of the temperature measuring structure 13 and the conductive member 124 is released.

[0059] Figure 9 shows a second embodiment of the aerosol generator of the present invention, which differs from the first embodiment in the following respects. The infrared radiation layer 1124 is a composite infrared layer. The composite infrared layer may be formed by combining an infrared layer forming substrate and a binder for bonding with the antioxidant layer 1123. Specifically, the binder may be glass powder, and the composite infrared layer may be a glass powder composite infrared layer. The reason for using glass powder is that the glass powder melts at high temperatures, thereby bonding the antioxidant layer 1123 and the infrared layer to form a substrate bond, closing the gaps in the infrared layer forming substrate and further improving the breakthrough resistance function. After compounding an infrared layer-forming substrate (such as silicon carbide or spinel) with glass powder, the mixture is applied to the side of the antioxidant layer 1123 away from the heat-generating substrate 1122 by methods such as immersion coating, spray coating, or brush coating. The mixture is then heat-treated in a tunnel furnace for 30 minutes, then placed in a heating furnace, heated to 1000-1200°C and maintained at that temperature for 2 hours, and then cooled to room temperature together with the furnace to create the glass powder composite infrared layer.

[0060] Figure 10 shows a third embodiment of the aerosol generator of the present invention, which differs from the first embodiment in the following respects. The heating element 112 further includes a bonding layer 1125 provided between the antioxidant layer 1123 and the infrared radiation layer 1124, the bonding layer 1125 being used to prevent localized destruction of the heating substrate 1122 and to further improve the bonding strength between the antioxidant layer 1123 and the infrared radiation layer 1124. In some embodiments, the binder in the bonding layer 1125 may be glass powder, that is, the bonding layer 1125 may be a glass powder layer.

[0061] In some embodiments, a binder may be added to the infrared radiation layer 1124. The selectable glass powder for the binder layer 1125 has a melting point higher than that of the glass powder in the infrared radiation layer 1124.

[0062] The above embodiments illustrate only preferred embodiments of the present invention and, while described in detail and specifically, should be understood not to limit the scope of protection of the present invention. Furthermore, those skilled in the art can freely combine the above technical features and make several modifications and improvements, provided they do not depart from the concept of the present invention, and all of these should fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the claims of the present invention should be included within the claims of the present invention.

Claims

1. A heating assembly comprising a heating element (1120) that generates infrared waves when energized, and a sleeve tube (111) through which the infrared waves pass, The heat-generating portion (1120) includes a heat-generating base (1122), an antioxidant layer (1123) provided on the outer surface of the heat-generating base (1122) to prevent oxidation of the heat-generating base (1122), and an infrared radiation layer (1124) provided on the side of the antioxidant layer (1123) away from the heat-generating base (1122). A heating assembly characterized in that an unsealed housing cavity (1113) for housing the heating element (1120) is formed inside the sleeve pipe (111), and at least a portion of the heating element (1120) is positioned at a distance from the pipe wall of the sleeve pipe (111).

2. The heat-generating assembly according to claim 1, characterized in that the antioxidant layer (1123) includes an oxide film, and the oxide film is formed on the outer surface of the heat-generating substrate (1122).

3. The heat-generating assembly according to claim 1, characterized in that the thickness of the antioxidant layer (1123) is 1 μm to 150 μm.

4. The sleeve tube (111) includes a hollow tubular body (1111), The aforementioned housing cavity (1113) is formed within the tubular body (1111), The heating assembly according to claim 1, characterized in that an opening (1110) is provided at one end of the tubular body (1111).

5. The heating assembly according to claim 4, characterized in that two conductive parts (1121) are connected to the heating part (1120), and both of the conductive parts (1121) pass through the opening (1110).

6. The heating assembly according to claim 4, characterized in that the sleeve tube (111) includes a apex structure (1112), the apex structure (1112) is located at one end of the tubular body (1111) away from the opening (1110).

7. The heating assembly according to claim 5, further comprising an insulating member (113) provided at least partially within the sleeve tube (111) and insulatingly arranging the two conductive parts (1121).

8. The present invention further includes a support base (12) that supports the heating element (1120) and the sleeve pipe (111), wherein the sleeve pipe (111) is at least partially inserted into the support base (12), The heating assembly according to claim 5, characterized in that the support base (12) is provided with a conductive member (124) connected to the conductive part (1121).

9. The support base (12) includes a bracket (121) that supports the sleeve pipe (111) and a sealing member (123). The heating assembly according to claim 8, characterized in that the sealing member (123) is fitted onto a portion of the sleeve pipe (111) and seals the gap between the inner wall of the bracket (121) and the outer wall of the sleeve pipe (111).

10. The heating assembly according to claim 9, characterized in that the sealing member (123) has a hollow structure with both ends penetrating, and a passage (1230) for the sleeve pipe (111) to pass through is formed on the inside.

11. The sealing member (123) includes a sleeve body (1231) whose ends penetrate and are fitted onto a part of the sleeve pipe (111), and a first sealing portion (1232) that protrudes from the outer wall of the sleeve body (1231). The heating assembly according to claim 10, characterized in that the first sealing portion (1232) is locked and connected to the bracket (121) and fixed.

12. The support base (12) includes an outer casing (122) fitted onto the outer circumference of the bracket (121) and having a sleeve connection port (1221) that cooperates with the bracket (121). The heating assembly according to claim 11, characterized in that the bracket (121) includes a bottom wall (1213), and a gap (1220) remains between the sleeve connection port (1221) and the bottom wall (1213).

13. The outer casing (122) is detachably fitted onto the bracket (121), The heating assembly according to claim 12, characterized in that the outer casing (122) is provided with a through hole (1224) through which a part of the sleeve pipe (111) passes.

14. The heating assembly according to claim 13, wherein the sealing member (123) further includes a second sealing portion (1233) provided protruding from the outer wall of the sleeve body (1231), the second sealing portion (1233) being located between the bracket (121) and the outer casing (122) when the outer casing (122) and the bracket (121) are assembled, and is used to seal the gap formed between the bracket (121) and the end face of the through hole (1224).

15. The heating assembly according to claim 1, characterized in that the sleeve tube (111) is made of infrared-transmitting glass, transparent ceramic, or diamond.

16. The heating assembly according to claim 1, characterized in that the entire heating element (1120) is arranged at a distance from the pipe wall of the sleeve pipe (111).

17. The heating assembly according to claim 1, characterized in that the heating element (1120) is arranged so as not to be in direct contact with the sleeve pipe (111).

18. The heat-generating assembly according to claim 1, characterized in that the infrared radiation layer (1124) includes an infrared layer and / or a composite infrared layer, the composite infrared layer being formed by a composite of an infrared layer forming substrate and a binder for bonding with the antioxidant layer (1123).

19. The heating assembly according to claim 1, characterized in that the heating substrate (1122) includes a metal substrate, and the metal substrate includes a nickel-chromium alloy substrate or an iron-chromium-aluminum alloy substrate.

20. An aerosol generator comprising a heat-generating assembly (10) according to any one of claims 1 to 19.

Images