Aerosol generating device and heating mechanism for aerosol generating device

Abstract

The utility model provides an aerial fog generating device and a heating mechanism for the aerial fog generating device. The aerial fog generating device comprises a chamber, an air inlet, an air outlet and an air outlet, a tubular heater at least partially surrounding or defining the chamber for an aerosol-generating article within the chamber; a substantially annular clamping element at least partially surrounding or defining the opening; the rigid connecting element is made of metal or alloy; the clamping element is formed by molding a moldable material at least partially in the connecting element, so that the clamping element is coupled to the connecting element and cannot be detached from or separated from the connecting element; the connecting element is securely connected to the heater in order to connect the clamping element to the heater. According to the aerial fog generating device, after the clamping element is molded in the connecting element to be connected into a whole, the connecting element and the heater are firmly connected, so that the connecting element and the heater form a fastened heating mechanism module, and integral preparation and assembly are more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating device and a heating mechanism for the aerosol generating device. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. A known heating device heats tobacco or non-tobacco products by radiating infrared rays from the outside through a tubular infrared heating element; and by arranging annular support elements at both ends of the tubular infrared heating element to support and hold the infrared heating element from both ends; and a sealing ring, such as an O-ring, is used to seal the support element and the infrared heating element. Utility Model Content

[0004] One embodiment of the present application provides an aerosol generating device, which is configured to heat an aerosol generating article to generate an aerosol; comprising:

[0005] a chamber having an opening through which an aerosol-generating article can be received in or removed from the chamber;

[0006] a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber;

[0007] a substantially annular clamping element at least partially surrounding or defining the opening;

[0008] A rigid connecting element made of metal or alloy; the clamping element is formed by at least partially molding a moldable material within the connecting element, thereby coupling the clamping element to the connecting element and being non-detachable or non-separable from each other;

[0009] The connecting element is firmly connected to the heater, thereby connecting the clamping element to the heater.

[0010] In some embodiments, the clamping element and the heater are hermetically sealed by the connecting element to prevent air from entering the chamber from therebetween.

[0011] In some embodiments, there is no flexible sealing element between the clamping element and the connecting element; and / or there is no flexible sealing element between the connecting element and the heater.

[0012] In some embodiments, the connecting element is securely connected to the heater by welding and forms an airtight seal therebetween.

[0013] In some embodiments, the moldable material comprises an organic polymer plastic; and / or, the connecting element is made of stainless steel.

[0014] In some embodiments, the heater at least partially passes through the connecting element and is inserted into the clamping element.

[0015] In some embodiments, the clamping element can withstand a temperature of at least 300°C; and / or the clamping element has a melting point greater than 330°C.

[0016] In some embodiments, the connecting element is configured in an annular shape and has a convex edge extending radially inward; the clamping element is at least partially located in the connecting element and is longitudinally coupled to the convex edge;

[0017] The connecting element is connected to the heater via the protrusion.

[0018] In some embodiments, the heater comprises:

[0019] a substantially tubular base having a first end proximal to the opening in a longitudinal direction and a second end facing away from the first end;

[0020] a heating element formed or combined on the substrate; the heating element is spaced apart from the first end, thereby defining a first spacing area between the heating element and the first end on the substrate;

[0021] The connecting element is connected to the base body in the first spacing region and avoids the heating element.

[0022] In some embodiments, the substrate is made of metal or alloy.

[0023] In some embodiments, it also includes:

[0024] The housing is tightly connected to the clamping element so as to at least partially retain the clamping element.

[0025] In some embodiments, the chamber further has an end facing away from the opening;

[0026] The aerosol generating device further comprises:

[0027] A rigid closure element closes or defines the ends of the chamber; the closure element is longitudinally engaged with the heater; and the closure element and the heater are hermetically sealed to prevent air from entering the chamber from therebetween.

[0028] In some embodiments, the closure element is connected to the heater by welding, forming an airtight seal therebetween.

[0029] In some embodiments, the closing element has an end wall arranged perpendicular to the longitudinal direction of the chamber, the end wall closing and defining a terminal end of the chamber;

[0030] An abutment portion extending toward the chamber is arranged on the end wall, and the abutment portion is used for the aerosol generating product received in the chamber to abut against to form a stop; when the aerosol generating product abuts against the abutment portion, a gap is formed or maintained between the aerosol generating product and the end wall, and the gap is configured to receive and retain debris or aerosol condensate falling out of the aerosol generating product.

[0031] In some embodiments, it also includes:

[0032] a shell having proximal and distal ends facing away from each other;

[0033] a stent disposed within the housing and at least partially between the closure element and the distal end;

[0034] The clamping element, heater and closure element are longitudinally retained between the housing and the support.

[0035] In some embodiments, it also includes:

[0036] An elastic body is located between the closure element and the support and is at least partially squeezed or compressed by them.

[0037] In some embodiments, the clamping element is arranged with a plurality of retaining ribs around the opening, and the plurality of retaining ribs are arranged circumferentially spaced apart; when the aerosol generating article is received from the opening into the chamber, the plurality of retaining ribs radially abut against the aerosol generating article, thereby clamping or retaining the aerosol generating article between the plurality of retaining ribs;

[0038] The clamping element also defines a plurality of air gaps between adjacent retaining ribs; when the aerosol-generating article is received in the chamber from the opening, the air gaps are configured to provide an inlet for external air to enter the chamber; and the aerosol-generating device is configured to allow external air to enter the chamber only from the air gaps.

[0039] Another embodiment of the present application further provides an aerosol generating device, which is configured to heat an aerosol generating article to generate an aerosol; comprising:

[0040] a chamber having an opening through which an aerosol-generating article can be received in or removed from the chamber;

[0041] a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber;

[0042] a substantially annular clamping element at least partially surrounding or defining the opening;

[0043] A rigid connecting member connects the clamping member to the heater and forms an airtight seal therebetween to prevent air from entering the chamber from between the clamping member and the heater.

[0044] Another embodiment of the present application further provides an aerosol generating device, which is configured to heat an aerosol generating article to generate an aerosol; comprising:

[0045] a chamber having an opening and an end facing away from the opening; an aerosol-generating article can be received in or removed from the chamber through the opening;

[0046] a substantially annular clamping element at least partially surrounding or defining the opening;

[0047] a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber;

[0048] a rigid closure member longitudinally engaged with the heater and closing or defining an end of the chamber;

[0049] The clamping element, the heater and the closing element are firmly connected, and any one of them cannot be disassembled or separated from the other two individually.

[0050] Another embodiment of the present application further provides a heating mechanism for an aerosol generating device, comprising:

[0051] An annular clamping element and a tubular heater are arranged in sequence along the longitudinal direction;

[0052] A rigid connecting element made of metal or alloy; the clamping element is formed by at least partially molding a moldable material inside the connecting element so as to couple the clamping element to the connecting element and be non-detachable from each other;

[0053] The connecting element is firmly connected to the heater, thereby connecting the clamping element to the heater.

[0054] The above aerosol generating device is more convenient to prepare and assemble as a whole by molding the clamping element in the connecting element and then connecting the connecting element and the heater tightly to form a tightly fixed heating mechanism module. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0056] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0057] Figure 2 yes Figure 1 A schematic diagram of the structure of the aerosol generating device from one perspective;

[0058] Figure 3 yes Figure 2 A schematic diagram of an aerosol generating device receiving an aerosol generating product for heating;

[0059] Figure 4 yes Figure 2 A schematic diagram of the structure of the middle bracket from one perspective;

[0060] Figure 5 yes Figure 4 A structural diagram of the middle bracket from another perspective;

[0061] Figure 6 yes Figure 2 A structural schematic diagram of the heating mechanism from one perspective;

[0062] Figure 7 yes Figure 6 A structural schematic diagram of the heating mechanism from another perspective;

[0063] Figure 8 yes Figure 6 An exploded schematic diagram of a heating mechanism from one perspective;

[0064] Fig. 9 yes Figure 6 An exploded schematic diagram of a cross-sectional view of the heating mechanism;

[0065] Fig.10 yes Figure 8 A schematic diagram of a clamping element being molded from a moldable material within a connecting element to form a secure connection;

[0066] Fig.11 yes Figure 6 A cross-sectional schematic diagram of a heating mechanism from one perspective;

[0067] Fig.12 yes Fig.11 Schematic diagram of a heating mechanism receiving an aerosol-generating article for heating. DETAILED DESCRIPTION

[0068] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0069] One embodiment of the present application provides an aerosol generating device 100 that heats, rather than burns, an aerosol generating product 1000, such as a cigarette, so that at least one component of the aerosol generating product 1000 is volatilized or released to form an aerosol for inhalation, for example Figure 1 shown.

[0070] In an optional embodiment, the aerosol generating article 1000 preferably uses a tobacco-containing material that releases volatile compounds from the substrate when heated; or it can also be a non-tobacco material that can be heated and suitable for electric heating and smoking. The aerosol generating article 1000 preferably uses a solid substrate, which can include one or more of powder, particles, fragments, strips or sheets of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or, the solid substrate can contain additional tobacco or non-tobacco volatile flavor compounds to be released when the substrate is heated.

[0071] according to Figures 1 to 3 As shown, when the aerosol generating article 1000 is received in the aerosol generating device 100, a portion thereof is exposed outside the aerosol generating device 100, such as a filter tip, which is advantageous for a user to inhale.

[0072] The structure of the aerosol generating device 100 according to one embodiment of the present application can be seen in Figures 1 to 3 As shown, the overall appearance of the aerosol generating device 100 is generally constructed in a longitudinal shape, and the aerosol generating device 100 includes:

[0073] The housing, which basically defines the outer surface of the aerosol generating device 100, has a proximal end 110 and a distal end 120 opposite to each other along the length direction; in use, the proximal end 110 is the end close to the user for easy operation of the aerosol generating product 1000 and inhalation; the distal end 120 is the end away from the user.

[0074] In some examples, the housing can be formed of a metal or alloy such as stainless steel, aluminum, etc. Other suitable materials include various plastics (eg, polycarbonate), metal-plating over plastic, ceramics, and the like.

[0075] according to Figures 1 to 3As shown, the housing of the aerosol generating device 100 includes:

[0076] The first housing 10 is arranged near the proximal end 110 along the length direction and defines the proximal end 110 of the housing;

[0077] The second shell 20 is arranged near the distal end 120 along the length direction and defines the distal end 120 of the housing; Figures 1 to 3 In the illustrated embodiment, the first housing 10 and the second housing 20 are both in a tubular or cylindrical shape with an inner cavity; and the first housing 10 and the second housing 20 are substantially coaxially arranged.

[0078] according to Figures 1 to 3 As shown, the aerosol generating device 100 further includes:

[0079] The battery core 21 is used for power supply; the battery core 21 is located in the second housing 20, or the battery core 21 is arranged near the distal end 120; the battery core 21 is basically arranged along the longitudinal extension of the aerosol generating device 100;

[0080] The charging connector 121 , such as a USB-type-C interface, is formed or arranged between the battery cell 21 and the distal end 120 , and is used to charge the battery cell 240 ;

[0081] The circuit board 23 , such as a PCB board or an FPC board, is used to control the battery cell 21 to provide power to the heating mechanism 30 . In a specific implementation, the circuit board 23 is basically arranged along the longitudinal extension of the aerosol generating device 100 .

[0082] In a preferred embodiment, the DC supply voltage provided by the battery cell 21 is in the range of about 2.5V to about 9.0V, and the amperage of the DC current that the battery cell 21 can provide is in the range of about 2.5A to about 20A. Typically, the battery cell 21 is a rechargeable battery. As an alternative, the battery cell 21 may be another form of charge storage device, such as a capacitor. The battery cell 21 may need to be recharged and may have a capacity that allows sufficient energy to be stored for one or more puffs; for example, the battery cell 21 may have sufficient capacity to allow continuous generation of aerosols for a period of about six minutes or in a multiple of six minutes. In another example, the battery cell 21 may have sufficient capacity to allow a predetermined number of heating starts of aerosol-generating articles 1000.

[0083] according to Figures 2 to 5 As shown, the aerosol generating device 100 further includes:

[0084] The bracket 22 is made of a rigid material such as polymer plastic or ceramic, and is used to support, hold or fix the battery cell 21 , the circuit board 23 and the heating mechanism 30 .

[0085] Specifically in Figures 2 to 5In the embodiment, the bracket 22 is basically arranged to extend longitudinally; the bracket 22 may include: a first support portion 221, a second support portion 223 and a third support portion 224 arranged longitudinally. The first support portion 221 and the third support portion 224 are basically perpendicular to the longitudinal direction of the aerosol generating device 100; the second support portion 223 extends longitudinally of the aerosol generating device 100.

[0086] In some embodiments, the second support portion 223 is arranged away from the longitudinal center axis of the aerosol generating device 100 / the bracket 22. Specifically, in the embodiment, the aerosol generating device 100 includes a first side and a second side opposite to each other in the width direction. The distance between the second support portion 223 and the second side is smaller than the distance between the second support portion 223 and the first side; or, the second support portion 223 is arranged relatively closer to the second side.

[0087] according to Figures 2 to 5 As shown in FIG. , the support 22 is defined or formed with:

[0088] A first holding cavity 225 is located between the second support portion 223 and the first side; the first holding cavity 225 is open toward the first side to accommodate or hold the battery cell 21;

[0089] The second holding cavity 226 is located between the second supporting portion 223 and the second side; the second holding cavity 226 is open toward the second side to accommodate or hold the circuit board 23 .

[0090] In the embodiment, the first retaining cavity 225 and / or the second retaining cavity 226 are located between the first support portion 221 and the third support portion 224. In the embodiment, along the width direction of the bracket 22, the first retaining cavity 225 and the second retaining cavity 226 are respectively located on both sides of the second support portion 223. A connecting structure 227, such as a boss, is further arranged on the surface of the second support portion 223 facing the second side, for fasteners, such as screws, to pass through the circuit board 23 for connection, thereby firmly connecting the circuit board 23 to the second support portion 223.

[0091] In the embodiment, a mounting hole 228 is further arranged on the third support portion 224 ; the mounting hole 227 is used to install or accommodate the charging connector 121 .

[0092] according to Figures 2 to 12 As shown, the aerosol generating device 100 further includes:

[0093] The heating mechanism 30 is used to receive and heat the aerosol generating article 1000. In this embodiment, the heating mechanism 30 is tightly mounted or held between the first shell 10 and the bracket 22. More specifically, the heating mechanism 30 is tightly mounted or held between the first shell 10 and the first support portion 221 of the bracket 22.

[0094] according to Figure 4 and Figure 5 As shown, the first support portion 221 of the bracket 22 defines a substantially annular support wall 222 for supporting the heating mechanism 30. In an embodiment, the annular support wall 222 is located on a side of the first support portion 221 of the bracket 22 facing the proximal end 110.

[0095] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the heating mechanism 30 includes a plurality of components arranged in sequence along the longitudinal direction. The plurality of components are tightly connected to each other and hermetically sealed to each other. In this embodiment, the components in the heating mechanism 30 are not disassembled or separated.

[0096] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the heating mechanism 30 includes:

[0097] The substantially annular clamping element 34, the tubular heater 31 and the closing element 32. The heating mechanism 30 surrounds or defines a chamber 36 for receiving the aerosol generating article 1000.

[0098] Among them, the clamping element 34 is close to or arranged at the proximal end 110. After assembly, the clamping element 34 is combined with the first shell 10 by means of tight fit, interference fit, or riveting. In addition, the clamping element 34 surrounds or defines an opening 341 at the proximal end 110. In use, the user can removably accommodate the aerosol generating product 1000 in the heating mechanism 30 through the opening 341.

[0099] In an embodiment, the clamping element 34 is rigid. Also, the clamping element 34 is molded from a moldable material in a mold and coupled to the connecting element 33. In some specific embodiments, the clamping element 34 is molded from an organic polymer plastic or a ceramic material.

[0100] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the inner surface of the annular clamping element 34 surrounding or defining the opening 341 is provided with a plurality of axially extending retaining ribs 342; the plurality of retaining ribs 342 are arranged at intervals in the circumferential direction. When the aerosol generating article 1000 is received into the aerosol generating device 100 from the opening 341, the plurality of retaining ribs 342 surround and abut against the aerosol generating article 1000, thereby clamping or retaining the aerosol generating article 1000 between the plurality of retaining ribs 342.

[0101] according to Figure 2 , Figure 3, Figures 6 to 12 As shown, a plurality of air gaps 343 between adjacent retaining ribs 342 are formed or defined on the inner surface of the annular clamping element 34; when the aerosol generating article 1000 is received in the chamber 36 from the opening 341, the air gaps 343 serve as an inlet for providing external air to enter the chamber 36. Fig.12 As shown by the middle arrow R1 , external air enters from the air gap 343 , and then enters into the aerosol generating product 1000 through the gap between the aerosol generating product 1000 and the heating mechanism 30 .

[0102] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the tubular heater 31 at least partially surrounds or defines the chamber 36; when the aerosol generating article 1000 is received in the chamber 36, the heater 31 surrounds the aerosol generating article 1000 from the outside and heats it, so that the aerosol generating article 1000 releases a plurality of volatile compounds, and these volatile compounds are formed only by heating treatment; when the aerosol generating article 1000 is received in the chamber 36, the heater 31 at least partially surrounds or encloses the aerosol generating article 1000, and heats it from the periphery of the aerosol generating article 1000. And, the tubular heater 31 includes:

[0103] A first end 311 and a second end 312 facing each other in the longitudinal direction;

[0104] A tubular base 313 extending from a first end 311 to a second end 312;

[0105] At least one heating element 314 is formed or arranged on the side wall of the substrate 313; in some embodiments, the at least one heating element 314 is formed on the outer surface of the substrate 313 by deposition, spraying, printing or wrapping. Or in some other embodiments, the at least one heating element 314 is formed on the inner surface of the substrate 313.

[0106] In the assembly or arrangement, the first end 311 of the heater 31 is arranged toward or near the clamping element 34; the first end 311 is inserted into the clamping element 34. In some embodiments, the moldable organic polymer material is at least one of polycarbonate, polytetrafluoroethylene, polyimide, polyphenylene sulfide or polysulfone resin, polyetheretherketone PEEK, etc. In some embodiments, the clamping element 34 formed by organic polymer plastic molding can withstand a temperature of at least 300°C. For example, the melting point of the clamping element 34 formed by organic polymer plastic molding is greater than 330°C.

[0107] In some embodiments, the circumferential length or perimeter of the substrate 313 is greater than the length of the substrate 313 along the longitudinal direction. In some embodiments, the longitudinal length of the substrate 313 does not exceed 15 mm or is less than 15 mm. In some embodiments, the substrate 313 may have a longitudinal length of about 10 mm to 15 mm and an inner diameter of about 5.8 mm to 10 mm. In some specific embodiments, the substrate 313 may have a longitudinal length of 12 mm; the substrate 313 may have an inner diameter of 7.6 mm.

[0108] In some embodiments, at least one heating element 314 is closed in the circumferential direction of the heater 31; at least one heating element 314 is a closed ring. In some embodiments, at least one heating element 314 has a length of 8 to 12 mm.

[0109] In some embodiments, at least one heating element 314 is a coating or thin layer formed on the substrate 313 by deposition, spraying, printing, etc. Or in some other embodiments, at least one heating element 314 is a thin film wrapped or bonded to the substrate 313. Or in some other optional embodiments, at least one heating element 314 of resistance can also be a heating film of resistance wound or bonded to the substrate 313.

[0110] In some embodiments, the thickness of the at least one heating element 314 in the form of a resistive coating can be preferably controlled to be 10 μm to 300 μm. In some embodiments, the at least one heating element 314 can be formed on the surface of the tubular substrate 313 by spraying it on the outer surface of the tubular substrate 313 through atmospheric plasma spraying and then curing it.

[0111] In some embodiments, at least one heating element 314 is a resistive heating element; by directing an electric current through the at least one heating element 314, the at least one heating element 314 can be heated by resistive Joule heat, thereby heating the aerosol generating article 1000. Also, in some embodiments, the at least one heating element 314 used for heating by generating resistive Joule heat may include graphite or a resistive metal or alloy; wherein the metal or alloy is, for example, a nickel-chromium alloy, a nickel-iron alloy, platinum, tungsten, silver, aluminum, titanium, molybdenum, manganese, or an alloy containing them. In some embodiments, the at least one heating element 314 providing resistive heating may be an annular coating or thin layer formed on the outer surface of the substrate 313. In some other variant embodiments, the at least one heating element 314 providing resistive heating may be a resistive track extending in a circuitous manner or in the form of a mesh formed on the outer surface of the substrate 313.

[0112] When the at least one heating element 314 is applied to the above heating by resistive heating, the material of the substrate 313 is a material with good thermal conductivity, such as ceramic, glass, surface insulating metal or alloy such as anodized aluminum, aluminum alloy, copper alloy, stainless steel, etc. And in some embodiments, the thermal conductivity of the substrate 313 is at least 10W / mk, preferably or at least 25W / mk; or in some embodiments, the thermal conductivity of the substrate 313 is greater than 100W / mk or higher. In some embodiments, the substrate 313 includes a metal suitable for the above high thermal conductivity such as aluminum, copper, titanium, or an alloy containing at least one of them. In some embodiments, the wall thickness of the substrate 313 is between 0.1 and 0.5 mm; more specifically, for example, the wall thickness of the substrate 313 is between 0.15 and 0.2 mm.

[0113] In some other embodiments, at least one heating element 314 is an infrared emitting layer, such as an electrically induced infrared emitting layer; by providing a DC voltage to at least one heating element 314, the at least one heating element 314 can be driven by the voltage to radiate infrared rays, thereby heating the aerosol generating article 1000. When the at least one heating element 314 used for heating by radiating infrared rays is applied, the material of the substrate 313 is a material that is infrared-transmissive, such as quartz, glass, ceramic, etc. In some embodiments, at least one heating element 314 for radiating infrared rays can be a coating made of ceramic materials such as zirconium, Fe-Mn-Cu system, tungsten system, or transition metals and their oxide materials. For example, in some embodiments, at least one heating element 314 for radiating infrared rays is composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, Zn, etc., and these metal oxides can radiate infrared rays with heating effect when heated to an appropriate heating temperature.

[0114] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, at least one heating element 314 is arranged to extend between the first end 311 and the second end 312. At least one heating element 314 is spaced apart from the first end 311 and the second end 312. Furthermore, the outer surface of the substrate 310 is further defined as follows:

[0115] a first spacing region 317 , located between the first end 311 and the at least one heating element 314 ;

[0116] The second spacing region 318 is located between the at least one heating element 314 and the second end 312 .

[0117] In some embodiments, the first spaced regions 317 and / or the second spaced regions 318 have substantially the same size along the longitudinal direction of the substrate 313. For example, in some optional embodiments, the first spaced regions 317 and / or the second spaced regions 318 have a length of about 0.2 to 3 mm; more specifically, for example, the first spaced regions 317 and / or the second spaced regions 318 have a length of about 0.5 to 1.5 mm.

[0118] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the heater 31 also includes:

[0119] The first electrode element 315 and the second electrode element 316 are arranged at intervals on at least one heating element 314 to guide current on at least one heating element 314. Specifically, the first electrode element 315 and the second electrode element 316 are combined with at least one heating element 314 at intervals in the circumferential direction, thereby guiding current in the circumferential direction of at least one heating element 314. In some embodiments, the first electrode element 315 and / or the second electrode element 316 are coatings formed by low-resistivity electrode materials. Or in some other variant embodiments, the first electrode element 315 and / or the second electrode element 316 can also be replaced by thinner sheet electrodes, which are formed on the heater 31 by welding or close contact. In some optional embodiments, the material of the first electrode element 315 and / or the second electrode element 316 is low-resistivity gold, silver, copper or their alloys.

[0120] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the first electrode element 315 and the second electrode element 316 extend substantially longitudinally and are coupled to at least one heating element 314. In some embodiments, the first electrode element 315 and the second electrode element 316 are opposite to each other in the radial direction of the heater 31. After assembly, the first electrode element 315 and the second electrode element 316 are respectively connected to the circuit board 23 by welding conductive leads, thereby connecting at least one heating element 314 to the circuit. In use, the circumferentially spaced first electrode element 315 and the second electrode element 316 are used to guide current in the circumferential direction of at least one heating element 314.

[0121] Alternatively, in some further variations, the heater 31 may further include at least two or more heating elements 314; at least two or more heating elements 314 are arranged at intervals along the longitudinal direction of the heater 31, so as to heat different parts of the aerosol generating article 1000 respectively, such as so-called segmented heating.

[0122] In an embodiment, the chamber 36 may have an open end and a terminal end opposite to each other. The open end of the chamber 36 may be described as an end for the aerosol generating article 1000 to enter and be received in the chamber 36; the terminal end may be described as an end for the aerosol generating article 1000 to abut against. Alternatively, in some embodiments, the open end is close to the opening 341 or the clamping element 34. In some specific embodiments, the open end may be formed or defined by the first end 311 of the heater 31. In some specific embodiments, the open end may be defined by the opening 341 of the clamping element 34.

[0123] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, the heating mechanism 30 also includes:

[0124] A rigid closing element 32 is coupled to the second end 312 of the heater 31; the closing element 32 is arranged in the shape of a cover and defines the longitudinal length of the chamber 36. The closing element 32 has a tubular side wall 321, and the side wall 321 surrounds and couples the heater 31; and the side wall 321 of the closing element 32 is engaged with the heater 31 to form a tight mechanical connection. Specifically, the side wall 321 of the closing element 32 is connected to the second end 312 of the heater 31. And, the closing element 32 also has an end wall 322 facing away from the heater 31; and the end of the chamber 36 is defined or closed by the end wall 322.

[0125] according to Figure 2 , Figure 3 , Figures 6 to 12 As shown, after assembly, the second end 312 of the heater 31 is inserted into the side wall 321 of the closing element 32 and abuts against the end wall 322 .

[0126] In an embodiment, the closing element 32 and the heater 31 are hermetically sealed. In an embodiment, the substrate 313 is made of metal or alloy material. Also, the closing element 32 is made of metal or alloy material, such as stainless steel or titanium alloy or aluminum alloy. In an embodiment, the closing element 32 and the heater 31 are tightly connected and hermetically sealed by welding, such as laser welding. Among them, welding is a term in the field of mechanical manufacturing or mechanical processing. It is a process or technology that melts the joint parts of the parts or materials that are joined to each other and then fuses and solidifies to form a connection by heating, high temperature or high pressure. The substrate 313 and the closing element 32 of the heater 31 are independently connected by welding, rather than being prepared as a whole.

[0127] Specifically, in the embodiment, when the heater 31 is inserted into the side wall 321 of the closing element 32, the side wall 321 of the closing element 32 surrounds and is combined with the second spacing area 318; and a seal is formed by welding between the side wall 321 and the second spacing area 318 to prevent air from entering the chamber 36 from therebetween. In some embodiments, the length of the side wall 321 is substantially the same as the length of the second spacing area 318. Then, when the heater 31 is inserted into the side wall 321 of the closing element 32, the side wall 321 substantially avoids at least one heating element 314.

[0128] In some embodiments, the length of the side wall 321 is approximately 0.5-1.5 mm.

[0129] exist Figures 8 to 12 In the illustrated embodiment, the end wall 322 of the closing element 32 is provided with a notch 324. In some embodiments, the bracket 22 or the elastic body 40 at least partially extends into the notch 324, so as to connect and retain the closing element 32.

[0130] exist Figures 8 to 12 In the illustrated embodiment, the closure element 32 is further provided with an abutment portion 325 extending from the end wall 322 toward the chamber 36 ; when the aerosol generating article 1000 is extended or inserted into the chamber 36 , the aerosol generating article 1000 abuts against the abutment portion 325 and stops.

[0131] In this embodiment, the extension length or protrusion height of the abutment portion 325 is greater than the length of the side wall 321. Therefore, after assembly, the abutment portion 325 at least partially extends into the heater 31. And after assembly, an annular space 327 is defined between the heater 31 and the abutment portion 325 around the abutment portion 325. In some embodiments, the annular space 327 is used to receive and retain debris or aerosol condensate falling out of the aerosol generating article 1000.

[0132] according to Figures 8 to 12 As shown, the heating mechanism 30 also includes:

[0133] The annular connecting element 33 surrounds or is combined with the clamping element 34. The connecting element 33 is made of metal or alloy material, for example, stainless steel or titanium alloy. The connecting element 33 also has a flange 331 extending radially inward. The flange 331 is located on one side of the connecting element 33 in the axial direction.

[0134] In an embodiment, the clamping element 34 is at least partially molded in the connecting element 33 by a moldable material and is firmly connected to the connecting element 33. For example, in some embodiments, the clamping element 34 and the connecting element 33 are molded by a metal insert injection molding (or in-mold injection molding) process. Specifically, the connecting element 33 made of a metal or alloy material is positioned in the mold cavity in advance, and then the moldable material is injected into the molding cavity and at least partially coupled with the connecting element 33. Finally, after the moldable material is solidified and formed, the clamping element 34 firmly combined with the connecting element 33 is obtained. In an embodiment, the molded clamping element 34 and the connecting element 33 are integrated and cannot be disassembled or separated relative to each other.

[0135] In an embodiment, the clamping element 34 is at least partially located inside the connecting element 33 and is surrounded or enclosed by the connecting element 33 from the outside; and the clamping element 34 is longitudinally abutted against or coupled to the flange 331 of the connecting element 33. The clamping element 34 and the connecting element 33 are hermetically sealed.

[0136] After assembly, the first end 311 of the heater 31 passes through the convex edge 331 of the connecting element 33 and is inserted into the clamping element 34; and the first end 311 of the heater 31 inserted into the clamping element 34 is longitudinally against the plurality of retaining ribs 342. Furthermore, the clamping element 34 at least partially surrounds and is coupled to the first spacing area 317 of the base 313 of the heater 31. And the clamping element 34 and the connecting element 33 avoid the heating element 314.

[0137] In an embodiment, the protrusion 331 of the connecting element 33 and the base 313 of the heater 31 are tightly connected and an airtight seal is formed by welding, such as laser welding, so that the clamping element 34 and the heater 31 are completely airtightly sealed to prevent air from entering the chamber 36 through their gaps.

[0138] In an embodiment, the welding of the flange 331 of the connecting element 33 and the outer surface of the base 313 is substantially performed along a circular joint track or path. The welding joint between the flange 331 and the base 313 is linear contact or joint, rather than surface contact or surface joint.

[0139] After assembly, the inner surface of the chamber 36 defined in the heating mechanism 30 between the opening 341 and the end wall 322 is completely airtight. Figures 8 to 12 As shown, there is no silicone sealing element combined with any part of the heating mechanism 30 in the aerosol generating device 100. Therefore, the heating mechanism 30 does not need any silicone sealing element. This is beneficial for eliminating the release of harmful substances such as silicone after absorbing the heat of the heater 31 by using a flexible silicone sealing element.

[0140] After assembly, the chamber 36 is defined by the heater 31 and the closure element 32, and the inner surface of the chamber 36 is airtightly sealed. Furthermore, the aerosol-generating article 1000 is inserted or received into the chamber 36 defined by the heater 31 and the closure element 32 through the opening 341 defined by the clamping element 34 for heating. In use, external air can only enter the chamber 36 through the air gaps 343 between adjacent retaining ribs 342 of the clamping element 34. Furthermore, when the aerosol-generating article 1000 is received in the chamber 36, a plurality of air gaps 343 surround the aerosol-generating article 1000 in the circumferential direction.

[0141] In an embodiment, the distance between the retaining rib 342 of the clamping element 34 and the central axis of the chamber 36 is smaller than the distance between the inner surface of the heater 31 and the central axis of the chamber 36; thus, when the aerosol generating article 1000 is received in the chamber 36, there is a gap between it and the inner surface of the heater 31 / the closing element 32, and the aerosol generating article 1000 is clamped by the retaining rib 342 to prevent it from loosening. Specifically, in some embodiments, the distance between the retaining rib 342 of the clamping element 34 and the central axis of the chamber 36 is 0.3 to 2.5 mm smaller than the distance between the inner surface of the heater 31 / the closing element 32 and the central axis of the chamber 36.

[0142] In use according to Fig.12 As shown by the middle arrow R2, external air enters through the air gap 343 between the retaining ribs 342, and extends to the gap 327 between the heater 31 and the aerosol generating article 1000, and then enters the aerosol generating article 1000 through the gap 327, and then carries the aerosol to the user. The end of the chamber 36 facing away from the outlet 341 is defined and closed by the closing element 32.

[0143] according to Figure 2 and Figure 3 As shown, the aerosol generating device 100 further includes:

[0144] The elastomer 40 is made of a flexible silicone or thermoplastic elastomer or synthetic rubber such as EPDM (ethylene propylene diene monomer rubber). The elastomer 40 is arranged to be located in the support wall 222 of the first support portion 221 and is used for the heating mechanism 30 to abut against. After assembly, the elastomer 40 is used to provide elasticity between the heating mechanism 30 and the bracket 22, so that the heating mechanism 30 and the bracket 22 are elastically engaged. The heating mechanism 30 is held between the elastomer 40 and the first shell 10. After assembly, the elastomer 40 is at least partially squeezed or compressed by the closing element 32 and the bracket 22.

[0145] After assembly, the elastic body 40 provides elasticity between the heating mechanism 30 and the bracket 22 , which is beneficial for shock absorption of the heating mechanism 30 .

[0146] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber having an opening; An aerosol-generating article can be received into or removed from the chamber through the opening; a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber; a substantially annular clamping element at least partially surrounding or defining the opening; A rigid connecting element made of metal or alloy; the clamping element is formed by at least partially molding a moldable material within the connecting element, thereby coupling the clamping element to the connecting element and being non-detachable or non-separable from each other; The connecting element is firmly connected to the heater, thereby connecting the clamping element to the heater.

2. The aerosol generating device according to claim 1, characterized in that The connecting element is firmly connected to the heater by welding; and any one of the clamping element, the heater and the closing element cannot be individually disassembled or separated from the other two.

3. The aerosol generating device according to claim 2, characterized in that There is no flexible sealing element between the clamping element and the connecting element; and / or there is no flexible sealing element between the connecting element and the heater.

4. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The clamping element and the heater are hermetically sealed by the connecting element to prevent air from entering the chamber from therebetween.

5. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The heater at least partially passes through the connecting element and is inserted into the clamping element.

6. The aerosol generating device according to claim 5, characterized in that The clamping element can withstand a temperature of at least 300°C; and / or the clamping element has a melting point greater than 330°C.

7. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The connecting element is configured in an annular shape and has a convex edge extending radially inward; the clamping element is at least partially located in the connecting element and is longitudinally coupled to the convex edge; The connecting element is connected to the heater via the protrusion.

8. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The heater comprises: a substantially tubular base having a first end proximal to the opening in a longitudinal direction and a second end facing away from the first end; a heating element formed or combined on the substrate; the heating element is spaced apart from the first end, thereby defining a first spacing area between the heating element and the first end on the substrate; The connecting element is connected to the base body in the first spacing region and avoids the heating element.

9. The aerosol generating device according to any one of claims 1 to 3, characterized in that: Also includes: The housing is tightly connected to the clamping element so as to at least partially retain the clamping element.

10. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The chamber also has an end facing away from the opening; The aerosol generating device further comprises: A rigid closure element closes or defines the ends of the chamber; the closure element is longitudinally engaged with the heater; and the closure element and the heater are hermetically sealed to prevent air from entering the chamber from therebetween.

11. The aerosol generating device according to claim 10, characterized in that The closing element is connected to the heater by welding and forms a gas-tight seal therebetween.

12. The aerosol generating device according to claim 10, characterized in that The closing element has an end wall arranged perpendicular to the longitudinal direction of the chamber, the end wall closing and defining a terminal end of the chamber; An abutment portion extending toward the chamber is arranged on the end wall, and the abutment portion is used for the aerosol generating product received in the chamber to abut against to form a stop; when the aerosol generating product abuts against the abutment portion, a gap is formed or maintained between the aerosol generating product and the end wall, and the gap is configured to receive and retain debris or aerosol condensate falling out of the aerosol generating product.

13. The aerosol generating device according to claim 10, characterized in that Also includes: a shell having proximal and distal ends facing away from each other; a stent disposed within the housing and at least partially between the closure element and the distal end; The clamping element, heater and closure element are longitudinally retained between the housing and the support.

14. The aerosol generating device according to claim 13, characterized in that Also includes: An elastic body is located between the closure element and the support and is at least partially squeezed or compressed by them.

15. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The clamping element is arranged with a plurality of retaining ribs around the opening, the plurality of retaining ribs being arranged circumferentially spaced apart; when the aerosol generating article is received from the opening into the chamber, the plurality of retaining ribs radially abut against the aerosol generating article, thereby clamping or retaining the aerosol generating article between the plurality of retaining ribs; The clamping element also defines a plurality of air gaps between adjacent retaining ribs; when the aerosol-generating article is received in the chamber from the opening, the air gaps are configured to provide an inlet for external air to enter the chamber; and the aerosol-generating device is configured to allow external air to enter the chamber only from the air gaps.

16. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber having an opening; An aerosol-generating article can be received into or removed from the chamber through the opening; a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber; a substantially annular clamping element at least partially surrounding or defining the opening; A rigid connecting member provides a connection between the clamping member and the heater and forms an airtight seal therebetween to prevent air from entering the chamber from between the clamping member and the heater.

17. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber having an opening and an end facing away from the opening; An aerosol-generating article can be received into or removed from the chamber through the opening; a substantially annular clamping element at least partially surrounding or defining the opening; a tubular heater at least partially surrounding or defining the chamber for heating an aerosol-generating article received in the chamber; a rigid closure member longitudinally engaged with the heater and closing or defining an end of the chamber; The clamping element, the heater and the closing element are firmly connected, and any one of them cannot be disassembled or separated from the other two individually.

18. A heating mechanism for an aerosol generating device, characterized in that: include: An annular clamping element and a tubular heater are arranged in sequence along the longitudinal direction; A rigid connecting element made of metal or alloy; the clamping element is formed by at least partially molding a moldable material inside the connecting element so as to couple the clamping element to the connecting element and be non-detachable from each other; The connecting element is firmly connected to the heater, thereby connecting the clamping element to the heater.

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