Aerosol Generating Device and Heating Assembly

Abstract

The present invention relates to an aerosol generating device and a heat generating assembly. The aerosol generating device includes a housing having an assembly port at one end, an extractor removably attached to the assembly port for accommodating an aerosol-forming substrate, and a heat generating assembly removably attached within the housing for heating the aerosol-forming substrate. The heat generating assembly includes a heat generating structure. The heat generating structure includes a heat generating portion that generates infrared waves when energized and a sleeve tube through which the infrared waves pass. The heat generating portion is disposed within the sleeve tube, with at least a portion thereof spaced apart from the wall of the sleeve tube. By detachably arranging the heat generating assembly within the housing, the aerosol generating device facilitates the replacement and cleaning of the entire heat generating assembly, thereby improving the palatability of the aerosol generated by the aerosol-forming substrate it heats.

Description

[Technical Field]

[0001] The present invention relates to the field of thermal non-combustion atomization, and more particularly to aerosol generating devices and heat generating assemblies. [Background technology]

[0002] In the field of HNB (heat-not-burn) atomization, heating methods such as central heating or peripheral heating are commonly adopted. Typically, a heating element generates heat, which is then directly transferred to a medium such as an aerosol-forming substrate by thermal conduction. The heating assembly including the heating element is usually fixed inside the aerosol-generating device and cannot be removed and replaced. This causes aging, damage, and surface staining after long-term use, and further reduces the mouthfeel quality of the aerosol generated from the heated aerosol-forming medium. Summary of the Invention

[0003] SUMMARY OF THE INVENTION The present invention aims to provide an improved aerosol generating device and heating assembly.

[0004] The technical solution adopted by the present invention to solve the technical problem is as follows: The aerosol generating device includes a housing having an assembly opening at one end, an extractor removably attached to the assembly opening for accommodating an aerosol-forming substrate, and a heat generating assembly removably attached within the housing for heating the aerosol-forming substrate. The heat generating assembly includes a heat generating structure including a heat generating portion that generates infrared waves when energized and a sleeve tube through which the infrared waves pass, the heat generating portion being disposed within the sleeve tube and at least a portion of which is spaced apart from the wall of the sleeve tube.

[0005] In some embodiments, the housing further includes a fixed sleeve removably mounted within the housing, the fixed sleeve having a hollow structure with both ends penetrated, and the heat generating assembly is mounted within the fixed sleeve and removably disposed within the fixed sleeve.

[0006] In some embodiments, the fixed sleeve tube and the heat generating assembly are provided with a first connecting structure, and the fixed sleeve tube and the heat generating assembly are detachably connected via the first connecting structure.

[0007] In some embodiments, the first connecting structure includes a locking protrusion and a locking hole that accommodates the locking protrusion. The locking protrusion is disposed on the heat generating assembly, and the locking hole is disposed on the side wall of the fixed sleeve cylinder and is disposed corresponding to the locking protrusion. Alternatively, the locking hole is disposed in the heat generating assembly, and the locking protrusion is disposed on the inner wall of the fixed sleeve cylinder and is disposed corresponding to the locking hole.

[0008] In some embodiments, the fixed sleeve includes first and second open ends spaced axially apart, the first open end being adapted to accommodate insertion and removal of a portion of the extractor, and the heat generating assembly being disposed adjacent the second open end.

[0009] In some embodiments, the first open end of the fixed sleeve tube is provided with an extension that fits into the assembly opening, and the extension and the housing are detachably connected by providing a second connecting structure.

[0010] In some embodiments, the second connection structure includes a first magnetic member and a second magnetic member, the first magnetic member being disposed on the extension portion, and the second magnetic member being disposed within the housing and corresponding to the first magnetic member.

[0011] In some embodiments, the extractor includes a receiving cavity for receiving an aerosol-forming substrate, and the heat generating assembly is at least partially removably inserted into the receiving cavity.

[0012] The present invention further provides a heat generating assembly that can be detachably mounted in an aerosol generating device and that can heat an aerosol-forming substrate. The heat generating assembly includes a support base and a heat generating structure mounted on the support base. The heat generating structure includes a heat generating portion that generates infrared waves when energized and a sleeve tube through which the infrared waves pass. The heat generating portion is disposed within the sleeve tube, and at least a portion of the heat generating portion is spaced apart from the wall of the sleeve tube. The sleeve tube has an opening that is disposed within the support base.

[0013] In some embodiments, the support base is provided with a first connection structure that is detachably connected to the aerosol generation device.

[0014] In some embodiments, the heat generating portion is disposed in the sleeve tube so as to be insertable and removable.

[0015] In some embodiments, the heat generating structure includes two conductive portions, which are connected to the heat generating portion, extend through the opening, and are removably conductively connected to the support base when the heat generating structure is attached to the support base.

[0016] In some embodiments, the support base is provided with a conductive member, which is arranged corresponding to the conductive portion, is detachably connected to the conductive portion, and is conductively connected to the conductive portion when the heat-generating structure is attached to the support base.

[0017] In some embodiments, the support base is provided with an isolation member that isolates and insulates two adjacently arranged conductive portions.

[0018] In some embodiments, the support platform includes a bracket that supports the heat generating structure. The bracket includes a first bracket body and a second bracket body that are openable and closable, and the first bracket body and the second bracket body sandwich or release the heat-generating structure by opening and closing.

[0019] In some embodiments, the support base further includes a sealing member, which is removably arranged between the first bracket body and the second bracket body, and which is removably fitted onto a portion of the heat-generating structure and is used to sealably connect the heat-generating structure to the first bracket body and the second bracket body.

[0020] In some embodiments, the sealing member includes a sleeve body having both ends penetrating therethrough and adapted to be fitted over a portion of the heat generating structure, and a first sealing portion protruding from an outer wall of the sleeve body.

[0021] The first sealing portion is engaged and fixed to the first bracket body and the second bracket body, respectively.

[0022] In some embodiments, the support base further includes an outer casing that is removably fitted onto the bracket. The outer casing is provided with a through hole through which a part of the heat generating structure passes.

[0023] In some embodiments, the sealing member further includes a sleeve body having both ends penetrating therethrough and fitted onto a portion of the heat-generating structure, and a second sealing portion protruding from an outer wall of the sleeve body. The second sealing portion is located between the bracket and the outer casing when the outer casing and the bracket are assembled, and is used to seal a gap formed between the bracket and an end face of the through hole.

[0024] In some embodiments, the housing includes a sleeve connection port for receiving the bracket. The bracket includes a bottom wall, and when the outer casing and the bracket are assembled, a gap remains between the bottom wall and the sleeve connection port.

[0025] In some embodiments, the bracket and the housing are provided with a third connecting structure.

[0026] In some embodiments, the third connection structure includes a locking hole and a locking protrusion. The locking protrusion is arranged to protrude from an outer wall of the bracket. The locking hole is arranged in a side wall of the outer casing and is arranged in one-to-one correspondence with the locking protrusion so as to be engaged with the locking protrusion.

[0027] In some embodiments, the heat generating assembly further includes a temperature measuring structure disposed on the heat generating structure and removably connected to the support base.

[0028] The present invention further comprises an aerosol generating device including a heat generating assembly according to the present invention and a power supply assembly connected to the heat generating assembly.

[0029] By implementing the aerosol generating device and heat generating assembly of the present invention, the aerosol generating device has the beneficial effect of facilitating replacement and cleaning of the entire heat generating assembly by detachably arranging the heat generating assembly within the housing, thereby improving the palatability of the aerosol generated by the heated aerosol-forming substrate.

[0030] The heating element of the heating structure generates infrared waves, which can penetrate the sleeve tube and reach the aerosol-forming substrate to heat it. When the maximum operating temperature of the heating element reaches 1000°C or higher (the operating temperature of the heating element of a conventional HNB generally does not exceed 400°C), the aerosol-forming medium is not over-burned, which significantly improves the smoking experience. At the same time, the pre-heating time is significantly reduced, significantly improving the consumer experience. [Brief explanation of the drawings]

[0031] The invention will now be further described with reference to the accompanying drawings and examples. [Figure 1] 1 is a schematic exploded view of the structure of an aerosol generating device according to a first embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a cross-sectional view of the aerosol generating device shown in FIG. [Figure 3] FIG. 2 is a structural schematic diagram of a heat generating assembly of the aerosol generating device shown in FIG. 1. [Figure 4] FIG. 4 is a first longitudinal cross-sectional view of the heat generating assembly shown in FIG. 3. [Figure 5] FIG. 4 is a second longitudinal cross-sectional view of the heat generating assembly shown in FIG. 3. [Figure 6] FIG. 4 is a third longitudinal cross-sectional view of the heat generating assembly shown in FIG. 3. [Figure 7] FIG. 4 is an exploded structural schematic diagram of the heat generating assembly shown in FIG. 3. [Figure 8] FIG. 4 is a schematic diagram of the bottom structure of the heat generating assembly shown in FIG. 3. [Figure 9] 4 is a cross-sectional view of the heating element of the heating assembly shown in FIG. 3. [Figure 10] FIG. 10 is a cross-sectional view of a heating element of an aerosol generating device according to a second embodiment of the present invention. [Figure 11] FIG. 10 is a cross-sectional view of a heating element of an aerosol generating device according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] In order to make the technical features, objects and effects of the present invention more clearly understandable, specific embodiments of the present invention will be described in detail with reference to the drawings.

[0033] 1 and 2 show a first embodiment of the aerosol-generating device of the present invention. The aerosol-generating device 100 can heat an aerosol-forming substrate using a low-temperature heating, non-combustion method, and provides stable atomization and a pleasant atomized taste. In some embodiments, the aerosol-forming substrate may be removably inserted into the aerosol-generating device 100. The aerosol-forming substrate may be cylindrical. Specifically, the aerosol-forming substrate may be a thread- or sheet-like solid material made of plant leaves and / or stems, and an aromatic component may be further added to the solid material.

[0034] As shown in FIGS. 1 and 2 , the aerosol generating device 100 in this embodiment further includes a heating assembly 10 and a power supply assembly 20. The heating assembly 10 may be partially inserted into the aerosol-forming substrate, specifically, a portion of it may be inserted into the medium segment of the aerosol-forming substrate. When energized, the heating assembly 10 generates thermal radiation to heat the medium segment of the aerosol-forming substrate and atomize it to generate aerosol. In this embodiment, the thermal radiation may be thermal infrared radiation. The heating assembly 10 has advantages such as easy assembly, simple structure, high atomization efficiency, high stability, and long service life. The power supply assembly 20 is used to supply power to the heating assembly 10.

[0035] In this embodiment, the heat-generating assembly 10 includes a heat-generating structure 11 and a support base 12. The heat-generating structure 11 is mounted on the support base 12. In this embodiment, the heat-generating structure 11 and the support base 12 are detachably mounted, which facilitates replacement and maintenance of the heat-generating structure 11. The support base 12 can be mechanically and electrically connected to the heat-generating structure 11 and not only supports the heat-generating structure 11, but also is conductively connected to the heat-generating structure 11 when the heat-generating structure 11 is mounted thereon, thereby electrically connecting the heat-generating structure 11 and the power supply assembly 20. In other embodiments, the support base 12 may only serve as a support.

[0036] As shown in FIGS. 3 to 6 , in this embodiment, the heating structure 11 includes a sleeve tube 111 and a heating element 112. The sleeve tube 111 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, an air gap remains between the inner wall of the sleeve tube 111 and the heating element 112. When energized, the heating element rapidly heats up to approximately 1000°C in 1 to 3 seconds, while the surface temperature of the sleeve tube 111 can be controlled to below 350°C. The atomization temperature of the entire aerosol-forming substrate is controlled to 300 to 350°C, and the aerosol-forming substrate is accurately atomized in the wavelength range of 2 to 5 μm. The maximum operating temperature of the heating element of the present invention is 500 to 1300°C, which is much higher than the maximum operating temperature of heating elements in the prior art.

[0037] In this embodiment, the sleeve tube 111 may be a quartz glass tube. Of course, it can be understood that in some other embodiments, the sleeve tube 111 is not limited to a quartz tube, but may be other window materials that can transmit light waves, such as infrared-transmitting glass, transparent ceramic, diamond, etc.

[0038] 7 to 9, in this embodiment, the sleeve tube 111 is hollow. Specifically, the sleeve tube 111 includes a tubular body 1111 having a circular cross section and a pointed structure 1112 provided at one end of the tubular body 1111. Of course, it can be understood that in some other embodiments, the cross section of the tubular body 1111 is not limited to a circular shape. The tubular body 1111 has a hollow structure with an opening 1110 provided at one end. The sleeve tube 111 can be attached to the support base 12. Specifically, the sleeve tube 111 can be partially inserted into the support base 12. The opening may be located within the support base 12. The pointed structure 1112 is provided at one end of the tubular body 1111 away from the opening 1110. The provision of the pointed structure 1112 facilitates insertion and removal of at least a portion of the heat generating structure 111 into and from the aerosol-forming substrate. In this embodiment, a receiving cavity 1113 is formed inside the sleeve tube 111. The receiving cavity 1113 is a cylindrical cavity and can be arranged in a non-sealed manner. Once the heat generating element 112 is attached thereto, the receiving cavity 1113 does not need to be evacuated or filled with an inert gas. In this embodiment, the sleeve tube 111 further includes a positioning portion 1114. The positioning portion 1114 is disposed at the opening 1110 of the tubular body 111 and extends outward along the radial direction of the tubular body 111. The positioning portion 1114 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 can be integrally formed with the tubular body 111. Of course, it can be understood that in some other embodiments, the positioning portion 1114 may be detachably assembled to the sleeve tube 111, for example, by sleeve connection, screwing, or engagement. In this embodiment, an air gap remains between the inner wall of the sleeve tube 111 and the heating element 112, and the air gap can be filled with air. By leaving an air gap, direct contact between the sleeve tube 111 and the heating element 112 can be prevented.

[0039] In this embodiment, the heating element 112 may be a single piece, or may be disposed vertically and wound to form a spiral heating portion 1120 as a whole. Specifically, the heating element 112 may be cylindrical as a whole and wound to form a single spiral structure, a double spiral structure, an M-shaped structure, an N-shaped structure, or other shaped structure. Of course, in some other embodiments, the heating element 112 is not limited to a single piece, but may be two pieces, or there may be more than two heating elements 112, and the shape of the heating elements 112 is not limited to a cylindrical shape, and in some embodiments, the shape of the heating element 112 may be a sheet shape.

[0040] In this embodiment, the heat generating unit 1120 is placed inside the sleeve tube 111, is entirely spaced apart from the wall of the sleeve tube 111, and may be used to generate infrared waves when energized. The infrared waves can pass through the sleeve tube 111 and reach the aerosol-forming substrate. Of course, it can be understood that in some other embodiments, the heat generating unit 1120 may be partially spaced apart from the wall of the sleeve tube 111. In this embodiment, the heat generating unit 1120 may have a vertically elongated spiral shape. Of course, it can be understood that in some other embodiments, the heat generating unit 1120 is not limited to being spiral-shaped.

[0041] In this embodiment, a conductive part 1121 is provided at one end of the heating part 1120. The conductive part 1121 is connected to the heating part 1120, drawn out from the opening 1110 of the sleeve tube 111, and may be conductively connected to the power supply assembly 20 by passing through the base 113. In this embodiment, the conductive part 1121 may be fixed to the heating part 1120 by welding to form an integral structure. It should be understood that in some other embodiments, the heating part 1120 may be integrally formed with the conductive part 1121. In this embodiment, there may be two conductive parts 1121. The two conductive parts 1121 are spaced apart and connected to both ends of the heating part 1120, respectively, and may both extend to the same end and be disposed through the opening 1110 at one end of the sleeve tube 111. In this embodiment, the conductive part 1121 may be a lead wire and may be welded to the heating part 1120. Of course, it can be understood that in some other embodiments, the conductive portion 1121 is not limited to a lead wire and may be another conductive structure. By arranging the conductive portion 1121 at one end of the heat generating portion 1120 and extending it from the sleeve tube 111, it is possible to facilitate assembly of the entire heat generating structure 11 and simplify the assembly process. During assembly, the heat generating structure 11 is mounted on the support base 12 and then brought into contact with the conductive member 124 located on the support base 12.

[0042] In this embodiment, the heating element 112 forming the heating unit 1120 includes a heating layer 1122 and a heat emitting layer 1124. The heating layer 1122 is capable of generating heat when energized. The heat emitting layer 1124 is disposed on the outer surface of the heating layer 1122 and is used to radiate the heat generated by the heating layer 1122. In this embodiment, the heating layer 1122 and the heat emitting layer 1124 are distributed concentrically in the cross section of the heating unit 1120.

[0043] In this embodiment, the heating layer 1122 may have a cylindrical shape as a whole. Specifically, the heating layer 1122 may be a heating wire. Of course, in some other embodiments, the heating layer 1122 is not limited to a cylindrical shape and may have a sheet shape, i.e., the heating layer 1122 may be a heating sheet. The heating layer 1122 includes a metal substrate having high-temperature oxidation resistance. The metal substrate may be a metal wire. Specifically, the heating layer 1122 may be made of a metallic material having 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 layer 1122 may be 0.15 mm to 0.8 mm.

[0044] In this embodiment, the heating element 112 further includes an antioxidant layer 1123, which is formed between the heating layer 1122 and the heat radiation layer 1124. Specifically, the antioxidant layer 1123 may be an oxide film. The heating layer 1122 undergoes high-temperature treatment to form a dense oxide film on its surface, which forms the antioxidant layer 1123. Of course, in other embodiments, the antioxidant layer 1123 is not limited to including an oxide film formed by the heating layer itself, and in other embodiments, it may be an antioxidant coating applied to the outer surface of the heating layer 1122. The formation of the antioxidant layer 1123 ensures that the heating layer 1122 is not oxidized or is hardly oxidized when heated in an air environment, thereby improving the stability of the heating layer 1122. As a result, there is no need to evacuate the receiving cavity 1113 or fill it with an inert gas or reducing gas, and there is no need to block the opening 1110, simplifying the assembly process of the entire heat-generating structure 11 and reducing manufacturing costs. In this embodiment, the thickness of the anti-oxidation layer 1123 can be selected in the range of 1 um to 150 um. If the thickness of the anti-oxidation layer 1123 is less than 1 um, the heat-generating layer 1122 is easily oxidized. If the thickness of the anti-oxidation layer 1123 is more than 150 um, it will affect the thermal conduction between the heat-generating layer 1122 and the heat-emitting layer 1124.

[0045] In this embodiment, the thermal emitting 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 layer 1122 by high-temperature heat treatment of an infrared-layer-forming substrate. In this embodiment, the infrared-layer-forming substrate may be a silicon carbide, spinel, or a composite substrate thereof. It should be understood that in some other embodiments, the thermal emitting layer 1124 is not limited to an infrared layer. In some other embodiments, the thermal emitting 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 layer 1122 by dip coating, spray coating, brush coating, or other methods. The thickness of the thermal emitting layer 1124 may be 10 μm to 300 μm. When the thickness of the thermal emitting layer 1124 is 10 μm to 300 μm, the improved thermal emitting effect improves the atomization efficiency of the aerosol-forming substrate and the mouthfeel of the atomized substance. Of course, it can be understood that in some other embodiments, the thickness of the heat emitting layer 1124 is not limited to 10 um to 300 um.

[0046] In this embodiment, the heat generating assembly 11 further includes an insulating member 113. The insulating member 113 has a cylindrical shape, and its radial dimension may be smaller than that of the receiving cavity 1113. The insulating member 113 can be fully or partially inserted into the receiving cavity 1113 through the opening 1110 of the sleeve tube 111, thereby isolating the two conductive portions 1121, i.e., insulating the two conductive portions 1121. In this embodiment, the insulating member 113 has two perforations 1131. The two perforations 1131 correspond one-to-one to the two conductive portions 1121. The perforations 1131 extend along the axial direction of the insulating member 113 and are used for the conductive portions 1121 to pass through and be electrically connected to the support base 12. In some embodiments, the insulating member 113 does not have to be cylindrical. In some embodiments, the insulating member 113 may be an insulating partition plate, and the perforations 1131 may be omitted. In some embodiments, the insulating member 113 may be a ceramic body, a quartz tube, or other insulating structure.

[0047] In this embodiment, the support base 12 can support the sleeve tube 111 and the heat generating unit 1120, and can be detachably connected to the aerosol generating device by providing a first connecting structure. The support base 12 includes a bracket 121, an outer casing 122, and a sealing member 123. The bracket 121 is used to support the heat generating structure 11. The outer casing 122 may be fitted onto the outer periphery of the bracket 121. The sealing member 123 may be attached to the bracket 121 to hermetically connect the heat generating structure 11 to the bracket 121 and the outer casing 122.

[0048] In this embodiment, the bracket 121 includes a first bracket body 121a and a second bracket body 121b that are openable and closable. The openable and closable first bracket body 121a and the second bracket body 121b facilitate the attachment and detachment of the heat-generating structure 11. In some embodiments, the first bracket body 121a and the second bracket body 121b may be joined to form a rectangular parallelepiped structure. It should be understood that in other embodiments, the first bracket body 121a and the second bracket body 121b are not limited to a rectangular parallelepiped shape, and in other embodiments, the joint between the first bracket body 121a and the second bracket body 121b may be cylindrical or have other shapes.

[0049] In this embodiment, end plates 1210 are provided at one ends of the first bracket body 121a and the second bracket 121b, and partition plates 1212 are provided on both the first bracket body 121a and the second bracket 121b. The partition plates 1212 divide the bracket 121 into two spaces, an upper space and an lower space. The space adjacent 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 bypass hole 1216. The two partition plates 1212 of the first bracket 121a and the second bracket 121b are arranged opposite each other, and the first bypass holes 1216 are joined to form a first via hole through which the heat-generating structure 11 is drilled.

[0050] In this embodiment, the bracket 121 further includes a bottom wall 1213, which is disposed on the first bracket 121a. Of course, in other embodiments, the bottom wall 1213 is not limited to being disposed on the first bracket 121a, and may be disposed on the second bracket 121b.

[0051] In this embodiment, the support 12 is provided with an isolating member 1215. Specifically, the isolating member 1215 is disposed to protrude from the bottom wall 1213, is integrally formed with the bottom wall 1213, and may be a rib plate, and is used to separate two adjacent conductive parts 1121 and to insulate the two conductive parts 1121 from each other.

[0052] In this embodiment, the first bracket body 121a and the second bracket 121b include a position-limiting barrier plate 1216 that limits the position of the heat-generating structure 11. The position-limiting barrier plate 1216 is disposed below the partition plate 1212 and spaced apart from the partition plate 1212. The position-limiting barrier plate 1216 is provided with a semi-cylindrical second escape hole 1217. When the first bracket 121a and the second bracket 121b are joined, the two second escape holes 1217 in the two position-limiting barrier plates 1216 join to form a second via hole. The second via hole is used for passing the heat-generating structure 11. 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, and therefore, it can position the heat-generating structure 11 in cooperation with the positioning portion 1114.

[0053] In this embodiment, the outer casing 122 is fitted onto the outer periphery of the bracket 121 after the heat-generating structure 11 and the bracket 121 are assembled, and serves to fix the first bracket body 121a and the second bracket 121b, allowing the heat-generating structure 11 and the support base 12 to form an integrated structure. In this embodiment, the shape and dimensions of the outer casing 122 are adapted to the bracket 121. In this embodiment, the outer casing 122 has a substantially rectangular parallelepiped shape and is hollow, with a sleeve connection port 1221 at one end. A gap remains between the sleeve connection port 1221 and the bottom wall 1213, which prevents aerosol remaining in the housing 21 from condensing to form condensate, which would affect the normal operation of the heat-generating structure 11.

[0054] In this embodiment, the outer casing 122 can be detachably connected to the bracket 121. Specifically, in this embodiment, a third connecting structure 125 is provided on the outer casing 122 and the bracket 121, and the outer casing 122 and the bracket 121 are detachably connected via the third connecting structure 125. In this embodiment, the third connecting structure 125 includes a locking hole 1222 and a locking protrusion 1214. The locking protrusion 1214 is disposed to protrude from the outer wall of the bracket 121. Specifically, there are two locking protrusions 1214, and the two locking protrusions 1214 are disposed in one-to-one correspondence on the outer walls of the first bracket body 121a and the second bracket body 121b. There are two locking holes 1222 disposed on the side walls of the outer casing 122. The two locking holes 1222 are arranged in one-to-one correspondence with the two locking protrusions 1214. When the outer casing 122 and the bracket 121 are assembled, the locking protrusions 1214 can be inserted into the locking holes 1222, thereby connecting and fixing the outer casing 122 and the bracket 121.

[0055] 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 disposed in the stopper wall 1223, and allows a part of the heat-generating structure 11 to pass through.

[0056] In this embodiment, the sealing member 123 is detachably disposed between the first bracket body 123a and the second bracket body 123b, and is detachably fitted around the heat-generating structure 11, specifically, fitted around the outer periphery of a segment of the sleeve tube 111, so as to seal and connect the heat-generating structure 11 with the first bracket body 121a and the second bracket body 121b. In this embodiment, the sealing member 123 may be a silicone material to prevent vibration and damage to the sleeve tube 111 when it is assembled with the bracket 121. Of course, it can be understood that in some other embodiments, the sealing member 123 is not limited to a silicone material.

[0057] In this embodiment, the sealing member 123 has a hollow structure with both ends penetrated and may have a passage 1230 formed therein. The passage 1230 may be used to drill the sleeve tube 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 and has a hollow structure with both ends penetrated, and is adapted to fit over a portion of the heat-generating structure 11. The first sealing portion 1232 and the second sealing portion 1233 are arranged to protrude 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 or 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 be fitted into the locking grooves 1211 of the first bracket body 121a and the second bracket body 121b, respectively. The second sealing portion 1233 is arranged to protrude from the outer wall of the sleeve body 1231, may be substantially annular, and has a radial dimension larger than that of the first sealing portion 1232. The second sealing portion 1233 may be arranged 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 a 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 to form a multi-sealed structure, that is, the sealing member 123 can achieve a three-way seal between the outer casing 122, the heat-generating structure 11, and the bracket 121, thereby simplifying the process, saving manufacturing costs, and preventing condensation from entering the bracket 121.

[0058] In this embodiment, the support base 12 is provided with a plurality of conductive members 124. Specifically, the conductive members 124 are arranged in one-to-one correspondence with the conductive portions 1121. Of course, in some other embodiments, there may be only one conductive member 124. The conductive member 124 may be an electrode pillar. The plurality of conductive members 124 are spaced apart on the bottom wall 1213 and detachably connected to the conductive portions 1121. Specifically, when the heat-generating structure 11 is attached to the support base 12, the conductive portions 1121 may be wound around the conductive members 124 and further conductively connected to the conductive members 124. In this embodiment, the conductive members 124 can be electrically connected to the power source in the power supply assembly 20 through contact, thereby electrically connecting the heat-generating structure 11 to the power supply assembly 20 and facilitating replacement of the heat-generating element 122 when the heat-generating structure 11 reaches the end of its useful life. In this embodiment, the conductive members 124 may be in two groups, one group conductively connected to the heat-generating structure 11 and the other group connected to the temperature-measuring structure 13. Of course, it can be understood that in some other embodiments, the conductive members 124 may be in one group, and the heat-generating structure 11 and the temperature-measuring structure 13 may share one group of conductive members 124.

[0059] In this embodiment, the heating assembly 10 further includes a temperature measuring structure 13. The temperature measuring structure 13 is disposed on the heating structure 11 and can be detachably connected to the support base 12. In this embodiment, the temperature measuring structure 13 can be fitted onto the outer periphery of a segment of the sleeve tube 111 and detachably connected to the conductive member 124 of the support base 12, thereby achieving a conductive connection when connected thereto. In this embodiment, the temperature measuring structure 13 is fitted onto the sleeve tube 111 at a position corresponding to where the heating portion 1120 and the conductive portion 1121 are connected, and includes a temperature measuring film 131 and a lead wire 132. The temperature measuring film 131 can be fitted onto the outer wall of the sleeve tube 111. The two lead wires 132 are arranged at a distance from each other, with one end connected to the temperature measuring film 131 and the other end connected to the conductive member 132 on the support base 12, which is wound around the corresponding conductive member 132 to provide electrical connection and signal passing. In some embodiments, the lead wires 132 can be welded or crimped to the temperature measuring film 131.

[0060] When assembling the heat generating assembly 10, first, the temperature measuring structure 13 is fitted onto the outer periphery of the sleeve tube 111, then the sealing member 123 is fitted onto the sleeve tube 111 of the heat generating structure 11, and the first bracket body 121a is engaged with the first sealing portion 1232 of the sealing member 123, after which the conductive portion 1121 of the heat generating structure 11 and the lead wire 132 of the temperature measuring structure 13 are wound onto the corresponding conductive member 124, and the second bracket body 121b is fitted onto the second sealing portion 1232. Finally, the entire structure formed by the bracket 121 and the heat-generating structure 11 is inserted into the sleeve connection port 1221 of the outer casing 122, causing the second sealing portion 1233 to abut against the stopper wall 1223 of the outer casing 122 and the end wall 1210 of the bracket 121, allowing a portion of the sealing member 123 and the heat-generating structure 11 to pass through the through-hole 1224, and simultaneously causing the locking protrusion 1214 on the outside of the bracket 121 to engage with the locking hole 1221 of the outer casing 122. When it is necessary to remove the heat-generating structure 11, the outer casing 122 is pushed in the direction of the pointed structure 1112 of the heat-generating structure 11, 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 portion 1121 and the lead wire 132 of the temperature measuring structure 13 and the conductive member 124 is released.

[0061] In some embodiments, the power supply assembly 20 includes a housing 21, a bracket 22, and a power source 23. The housing 21 may be cylindrical, have a hollow interior, and have an assembly port 211 at one end. The bracket 22 is housed within the housing 21 and is used to attach the power source 23 and serve as support. The bracket 22 is provided with a mounting cavity 221, which can be used to attach the heat generating assembly 10. The mounting cavity 221 communicates with the assembly port 211, and is provided with a communication port 2210 that communicates with the assembly port 211. The power source 23 is attached to the bracket 22, is mechanically and / or electrically connected to the heat generating assembly 10, and can be used to supply power to the heat generating assembly 10.

[0062] In some embodiments, the aerosol generating device further includes an extractor 30, which can be used to accommodate an aerosol-forming substrate. The extractor 30 is detachably attached to the assembly port 211. In some embodiments, the extractor 30 includes a top cover 31 that detachably covers the assembly port 211 and a housing tube 32, one end of which is connected to the top cover 31. The housing tube 32 may be integrally formed with the top cover 31. The housing tube 32 may have a structure that is open at both ends, and has a housing cavity 320 formed therein for accommodating the aerosol-forming substrate. At least a portion of the heat generating assembly is detachably inserted into the housing cavity 320, which can be inserted into the aerosol-forming substrate to heat the aerosol-forming substrate. The housing tube 32 of the extractor 30 is removably arranged in the mounting cavity 221, and the entire housing 21 can be pulled out.

[0063] In some embodiments, the aerosol generating device further includes a fixed sleeve 40, which is removably disposed within the housing 21 and detachably assembled with the extractor 30 to form a cover assembly with the extractor 30. Specifically, the fixed sleeve 40 is removably disposed within the mounting cavity 221 and can be used to mount the heat generating assembly 10. Specifically, the heat generating assembly 10 is mounted within the fixed sleeve 40 and detachably disposed with the fixed sleeve 40. In this embodiment, the fixed sleeve 40 has a hollow structure with both ends penetrated and includes a first open end 41 and a second open end 42 spaced apart in the axial direction. An insertion / removal passage for inserting and removing the extractor is formed inside the fixed sleeve 40. The first open end 41 can be used to insert and remove the housing tube of the extractor 30 into the fixed sleeve 40. The heat generating assembly 10 may be positioned adjacent to the second open end 42 and may be withdrawn from the second open end 42 .

[0064] In this embodiment, the fixed sleeve 40 and the heat generating assembly 10 can be detachably connected by providing a first connecting structure 50. The first connecting structure 50 may include a locking protrusion 1226 and a locking hole 43. The locking protrusion 1226 may be disposed on the heat generating assembly 10. Specifically, in this embodiment, the locking protrusion 1226 protrudes from the outer wall of the outer casing 12, and the locking hole 43 is disposed on the side wall of the fixed sleeve 40 and is positioned corresponding to the locking protrusion 1226. When the heat generating assembly 10 needs to be attached to the aerosol generating device, the heat generating assembly 10 is inserted into the fixed sleeve 40 through the second open end 42 of the fixed sleeve 40, and at the same time, the locking protrusion 1226 is engaged with the locking hole 43, and the heat generating assembly 10 can be inserted into the receiving tube 31 of the extractor 30 and then into the aerosol-forming substrate. When the heat generating assembly 10 needs to be removed or replaced, the extractor 30 together with the entire fixed sleeve tube 40 is pulled out of the mounting cavity 221, and the extractor 30 is separated from the fixed sleeve tube 40. Then, the locking protrusion 1226 is pulled out of the locking hole 43, and the heat generating assembly 10 can be pulled out from the second open end 42 of the fixed sleeve tube 40. In other embodiments, the locking protrusion 1226 may be protruding from the inner wall of the fixed sleeve tube 40. The locking hole 43 may be disposed on the heat generating assembly 10, specifically, on the side wall of the outer casing 12 of the heat generating assembly 10, and positioned corresponding to the locking protrusion 1226 so as to be engaged with the locking protrusion 1226. Of course, it can be understood that in other embodiments, the first connecting structure 50 is not limited to an engaging structure, and in other embodiments, the first connecting structure 50 may be a magnetic attraction structure, a screw structure, a guide slider, a slide groove matching structure, etc.

[0065] In this embodiment, the first open end 41 of the fixed sleeve 40 is provided with an extension 44. The extension 44 can extend radially outward from the first open end 41, and its shape and size can be adapted to the shape and size of the assembly opening. The extension 44 can be arranged to cover the assembly opening. The extension 44 can be detachably connected to the top cover 31 of the extractor 30 by means of fastening or magnetic attraction.

[0066] In this embodiment, the fixed sleeve 40 and the housing 21 can be detachably connected by providing a second connecting structure 60. In this embodiment, the second connecting structure 60 includes a first magnetic member 61 and a second magnetic member. The first magnetic member 61 is disposed on the extension 44, and the second magnetic member is mounted within the housing 21 and positioned corresponding to the first magnetic member 61. The second magnetic member is attached to the bracket 22 and may be integrally molded on the top wall of the bracket 22. Of course, it can be understood that in some other embodiments, the second magnetic member may be provided independently of the bracket 22. When the fixed sleeve 40 is inserted into the mounting cavity 221 of the bracket 22, the fixed sleeve 40 can be attracted and fixed to the assembly opening 211 of the housing 21 via the first magnetic member 61 and the second magnetic member. In other embodiments, the second connecting structure 60 is not limited to a magnetic structure and may be a fastening structure, a screw structure, or the like.

[0067] FIG. 10 shows a second embodiment of the aerosol generating device of the present invention, which differs from the first embodiment in the following respects. The thermal radiation layer 1124 is a composite infrared layer. The composite infrared layer may be formed by combining an infrared layer-forming substrate with a binder for bonding to 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, sealing gaps in the infrared layer-forming substrate and further improving breakthrough resistance. Glass powder is added to an infrared layer forming substrate (such as silicon carbide or spinel) and compounded, and then coated on the side of the antioxidant layer 1123 away from the heat generating layer 1122 by dip coating, spray coating, brush coating, or other methods, treated in a tunnel furnace, then placed in a heating furnace, heated to 1000-1200°C at a constant heating rate and kept at that temperature, and then cooled to room temperature together with the furnace to create the glass powder composite infrared layer.

[0068] 11 shows a third embodiment of the aerosol generating device of the present invention, which differs from the first embodiment in the following respects: the heating element 112 further includes a bonding layer 1125 disposed between the antioxidant layer 1123 and the thermal radiation layer 1124. The bonding layer 1125 can be used to prevent localized destruction of the heating layer 1122 and further improve the bonding strength between the antioxidant layer 1123 and the thermal radiation layer 1124. In some embodiments, the bonding material in the bonding layer 1125 can be glass powder, i.e., the bonding layer 1125 can be a glass powder layer.

[0069] In some embodiments, a binder may be added to the thermally emissive layer 1124. The melting point of the glass powder selected for the binder layer 1125 is higher than the melting point of the glass powder in the thermally emissive layer 1124.

[0070] The above examples only show preferred embodiments of the present invention and are described in detail and specifically, but it should be understood that they do not limit the scope of protection of the present invention. It should be noted that those skilled in the art can freely combine the above technical features and make some modifications and improvements without departing 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 within the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An aerosol generating device comprising: a housing (21) having an assembly port (211) at one end; and a heat generating assembly (10) removably attached to the housing (21) for heating an aerosol-forming substrate; The heat generating assembly (10) includes a heat generating structure (11), the heat generating structure (11) including a heat generating portion (1120) that generates infrared waves when energized, and a sleeve tube (111) through which the infrared waves pass, the heat generating portion (1120) being disposed within the sleeve tube (111) and at least a portion of which is disposed at a distance from the wall of the sleeve tube (111).

2. 2. The aerosol generating device according to claim 1, further comprising a fixed sleeve (40) removably mounted within the housing (21), the fixed sleeve (40) having a hollow structure with both ends penetrated, and the heat generating assembly (10) being mounted within the fixed sleeve (40) and being removably disposed within the fixed sleeve (40).

3. The aerosol generating device described in claim 2, characterized in that a first connecting structure (50) is provided between the fixed sleeve tube (40) and the heat generating assembly (10), and the fixed sleeve tube (40) and the heat generating assembly (10) are detachably connected via the first connecting structure (50).

4. The first connecting structure (50) includes a locking protrusion (1226) and a locking hole (43) that fits the locking protrusion (1226), The locking protrusion (1226) is disposed on the heat generating assembly (10), and the locking hole (43) is disposed on the side wall of the fixed sleeve tube (40) and is disposed corresponding to the locking protrusion (1226); Alternatively, the locking hole (43) is arranged in the heat generating assembly (10), and the locking protrusion (1226) is arranged on the inner wall of the fixed sleeve tube (40) and is arranged corresponding to the locking hole (43), as described in claim 3.

5. The aerosol generating device further comprises an extractor (30) removably attached to the assembly port (211) for accommodating an aerosol-forming substrate; The aerosol generating device of claim 2, characterized in that the fixed sleeve tube (40) includes a first open end (41) and a second open end (42) spaced apart in the axial direction, the first open end (41) being used to position a portion of the extractor (30) for insertion and removal, and the heat generating assembly (10) being positioned adjacent to the second open end (42).

6. The aerosol generating device described in claim 5, characterized in that the first open end (41) of the fixed sleeve tube (40) is provided with an extension portion (43) that fits into the assembly port (211), and the extension portion (43) and the housing (21) are detachably connected by providing a second connecting structure (60).

7. The aerosol generating device described in claim 6, characterized in that the second connection structure (60) includes a first magnetic member (61) and a second magnetic member, the first magnetic member (61) being arranged in the extension portion (43), and the second magnetic member being arranged within the housing (21) and corresponding to the first magnetic member (61).

8. The aerosol generating device of claim 5, characterized in that the extractor (30) includes a storage cavity (320) for storing an aerosol-forming substrate, and the heat generating assembly (10) is at least partially removably inserted into the storage cavity (320).

9. A heat generating assembly, which is detachably attached within an aerosol generating device and capable of heating an aerosol-forming substrate, comprising: a support base (12) and a heat generating structure (11) attached to the support base (12), wherein the heat generating structure (11) comprises a heat generating section (1120) that generates infrared waves when energized, and a sleeve tube (111) through which the infrared waves pass, the heat generating section (1120) being arranged within the sleeve tube (111) and at least a portion of which is spaced apart from the wall of the sleeve tube (111), the sleeve tube (111) having an opening (1110) which is arranged within the support base (12).

10. 10. The heat generating assembly according to claim 9, wherein the support base (12) is provided with a locking protrusion (122) that is detachably connected to the aerosol generating device.

11. The heat generating assembly according to claim 9, wherein the heat generating portion (1120) is removably disposed within the sleeve tube (111).

12. The heat generating assembly of claim 9, characterized in that the heat generating structure (11) includes two conductive portions (1121), which are connected to the heat generating portion (1120), pulled out from the opening (1110), and removably conductively connected to the support base (12) when the heat generating structure (11) is attached to the support base (12).

13. The heat-generating assembly of claim 12, characterized in that the support base (12) is provided with a conductive member (124), the conductive member (124) is arranged corresponding to the conductive portion (1121), is detachably connected to the conductive portion (1121), and is conductively connected to the conductive portion (1121) when the heat-generating structure (11) is attached to the support base (12).

14. The heat generating assembly according to claim 12, characterized in that the support base (12) is provided with an isolation member (1215) that isolates and insulates two adjacently arranged conductive portions (1121).

15. The support base (12) includes a bracket (121) that supports the heat generating structure (11), The heat generating assembly according to claim 9, characterized in that the bracket (121) includes a first bracket body (121a) and a second bracket body (121b) that are arranged to be openable and closable, and the first bracket body (121a) and the second bracket body (121b) clamp or release the heat generating structure (11) by opening and closing.

16. 16. The heat generating assembly of claim 15, wherein the support base (12) further includes a sealing member (123), the sealing member (123) being detachably disposed between the first bracket body (121a) and the second bracket body (121b), and the sealing member (123) being detachably fitted onto a portion of the heat generating structure (11) and used to sealably connect the heat generating structure (11) to the first bracket body (121a) and the second bracket body (121b).

17. The sealing member (123) includes a sleeve body (1231) having both ends penetrating therethrough and adapted to be fitted onto a part of the heat generating structure (11), and a first sealing portion (1232) protruding from the outer wall of the sleeve body (1231), The heat generating assembly according to claim 16, wherein the first sealing portion (1232) is engaged and fixed to the first bracket body (121a) and the second bracket body (121b), respectively.

18. The support base (12) further includes an outer casing (122) detachably fitted onto the bracket (121), The heat generating assembly according to claim 16, characterized in that the outer casing (122) is provided with a through hole (1224) through which a part of the heat generating structure (11) passes.

19. The heat generating assembly of claim 18, characterized in that the sealing member (123) further includes a sleeve body (1231) having both ends penetrating therethrough and adapted to be fitted onto a portion of the heat generating structure (11), and a second sealing portion (1233) protruding from the outer wall of the sleeve body (1231), the second sealing portion (1233) being positioned between the bracket (121) and the outer casing (122) when the outer casing (122) and the bracket (121) are assembled, and being used to seal a gap formed between the bracket (121) and an end face of the through hole (1224).

20. The outer casing (122) includes a sleeve connection port (1221) for inserting the bracket (121), The heat generating assembly of claim 18, characterized in that the bracket (121) includes a bottom wall (1213), and when the outer casing (122) and the bracket (121) are assembled, a gap remains between the bottom wall (1213) and the sleeve connection port (1221).

21. The bracket (121) and the outer casing (122) are provided with a third connecting structure (125), The heat generating assembly of claim 18, characterized in that the third connection structure (125) includes a locking hole (1222) and a locking protrusion (1214), the locking protrusion (1214) is arranged to protrude from the outer wall of the bracket (121), and the locking hole (1222) is arranged on the side wall of the outer casing (122) and is arranged in one-to-one correspondence with the locking protrusion (1214) so ​​as to be engaged with the locking protrusion (1214).

22. The heat generating assembly according to claim 9, further comprising a temperature measuring structure (13) provided on the heat generating structure (11) and detachably connected to the support base (12).

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