Aerosol generating device and heater for aerosol generating device

Abstract

The utility model provides an aerosol generating device and a heater for the aerosol generating device. The aerial fog generating device comprises a chamber, a first heating element and a second heating element, a first electrode coupled to the first heating element; the second electrode and the third electrode are combined with the second heating element at intervals in the circumferential direction; a fourth electrode including a first section and a second section; the first section is combined with the first heating element and is separated from the first electrode; the second section is combined with the second heating element and is separated from the second electrode and / or the third electrode; a battery cell; and the circuit is used for connecting at least two of the first electrode, the second electrode, the third electrode and the fourth electrode to the battery cell so as to supply the electric power of the battery cell to the first heating element and / or the second heating element. According to the aerial fog generating device, the circuit selectively connects the four electrodes to the battery cell, and then one or two of the first heating element and the second heating element can be selectively controlled for heating.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating device and a heater 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 compounds by heating rather than burning a material. For example, the material may be an aerosol-generating product of tobacco or other non-tobacco products, which may or may not contain nicotine. Known heating devices, in order to heat the aerosol-generating product to a temperature capable of releasing volatile components that can form an aerosol, usually surround the aerosol-generating product with a tubular substrate, and form or arrange a resistive or infrared heating coating on the outside of the tubular substrate, and generate an aerosol by heating the aerosol-generating product in the tubular substrate by resistive Joule heat or infrared radiation. 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 for receiving the aerosol generating article;

[0006] a first heating element and a second heating element disposed around the chamber and spaced longitudinally of the chamber for heating the aerosol-generating article;

[0007] a first electrode coupled to the first heating element;

[0008] A second electrode and a third electrode are coupled to the second heating element at intervals along a circumferential direction of the second heating element;

[0009] a fourth electrode, comprising a first section and a second section arranged in a longitudinal direction; the first section is coupled to the first heating element and is spaced apart from the first electrode in a circumferential direction of the first heating element; the second section is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in a circumferential direction of the second heating element;

[0010] Battery cells, used for power supply;

[0011] The circuit connects at least two of the first electrode, the second electrode, the third electrode and the fourth electrode, thereby providing the power of the battery cell to the first heating element and / or the second heating element.

[0012] In some embodiments, the second heating element is non-closed in the circumferential direction and defines a gap that passes through the second heating element in the longitudinal direction;

[0013] The second electrode is located at a first side of the notch, and the third electrode is located at a second side of the notch.

[0014] In some embodiments, the first electrode passes through the gap.

[0015] In some embodiments, the width of the first segment is different from the width of the second segment.

[0016] In some embodiments, it also includes:

[0017] a substantially tubular base at least partially surrounding or defining the chamber;

[0018] The first heating element and / or the second heating element are formed or bonded to the substrate.

[0019] In some embodiments, the substrate includes: a first end and a second end opposite to each other in a longitudinal direction; the second heating element is closer to the second end than the first heating element, and a spacing area is formed or defined between the second heating element and the second end;

[0020] The first electrode extends from the first heating element to the spacing area and defines a first electrical connection portion for connecting the circuit in the spacing area; and / or, the second electrode extends from the second heating element to the spacing area and defines a second electrical connection portion for connecting the circuit in the spacing area; and / or, the third electrode extends from the second heating element to the spacing area and defines a third electrical connection portion for connecting the circuit in the spacing area; and / or, the fourth electrode extends from the first heating element to the spacing area and defines a fourth electrical connection portion for connecting the circuit in the spacing area.

[0021] In some embodiments, the first electrical connection portion has a shape different from that of the fourth electrical connection portion, so as to provide a shape indication for distinguishing or identifying the first electrical connection portion and the fourth electrical connection portion.

[0022] In some embodiments, the circuit is configured to connect one of the first electrode and the fourth electrode to the positive terminal of the battery cell and the other to the negative terminal of the battery cell, thereby providing power from the battery cell to the first heating element so that the first heating element alone starts heating.

[0023] In some embodiments, the circuit is configured to connect one of the positive and negative electrodes of the battery cell to the fourth electrode and the other to the second electrode and the third electrode at the same time, thereby providing power from the battery cell to the second heating element so that the second heating element starts heating alone.

[0024] In some embodiments, the circuit is configured to connect one of the positive and negative electrodes of the battery cell to the fourth electrode and the other to the first electrode, the second electrode and the third electrode at the same time, thereby enabling the first heating element and the second heating element to start heating in parallel at the same time.

[0025] 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:

[0026] a chamber for receiving the aerosol generating article;

[0027] A first heating element and a second heating element are arranged around the chamber and spaced apart in the longitudinal direction of the chamber for heating the aerosol generating article; the second heating element is non-closed in the circumferential direction and has a notch passing through the second heating element in the longitudinal direction;

[0028] A first electrode, a second electrode, a third electrode and a fourth electrode are provided for guiding current on the first heating element and the second heating element; wherein the first electrode is at least partially coupled to the first heating element and passes through the notch; the second electrode is coupled to the second heating element and is located on a first side of the notch; the third electrode is coupled to the second heating element and is located on a second side of the notch; the fourth electrode comprises a first segment and a second segment arranged in a longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in a circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in a circumferential direction of the second heating element.

[0029] 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:

[0030] a chamber for receiving the aerosol generating article;

[0031] a substantially tubular base at least partially surrounding or defining the chamber;

[0032] A first heating element and a second heating element are arranged on the substrate at intervals for heating the aerosol generating article; the second heating element is closer to the second end than the first heating element and forms or defines a spacing area with the second end;

[0033] a first electrode, a second electrode, a third electrode and a fourth electrode for conducting current on the first heating element and the second heating element; wherein,

[0034] The first electrode is coupled to the first heating element and extends from the first heating element to the spacing area, and defines a first electrical connection portion in the spacing area;

[0035] The second electrode is coupled to the second heating element and extends from the second heating element to the spacing area, and defines a second electrical connection portion in the spacing area;

[0036] The third electrode is coupled to the second heating element and spaced apart from the second electrode, and the third electrode extends from the second heating element to the spaced area and defines a third electrical connection portion in the spaced area;

[0037] The fourth electrode includes a first segment and a second segment arranged in the longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in the circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in the circumferential direction of the second heating element; the second segment extends from the second heating element to the spacing area and defines a fourth electrical connection portion in the spacing area.

[0038] Another embodiment of the present application further provides a heater for an aerosol generating device, comprising:

[0039] A substantially tubular body having a first end and a second end opposite to each other in a longitudinal direction;

[0040] A first heating element and a second heating element are arranged on the substrate at intervals, at least partially surrounding the substrate; the second heating element is closer to the second end than the first heating element, and a spacing area is formed or defined between the second heating element and the second end;

[0041] a first electrode, a second electrode, a third electrode and a fourth electrode for conducting current on the first heating element and the second heating element; wherein,

[0042] The first electrode is coupled to the first heating element and extends from the first heating element to the spacing area, and defines a first electrical connection portion in the spacing area;

[0043] The second electrode is coupled to the second heating element and extends from the second heating element to the spacing area, and defines a second electrical connection portion in the spacing area;

[0044] The third electrode is coupled to the second heating element and spaced apart from the second electrode, and the third electrode extends from the second heating element to the spaced area and defines a third electrical connection portion in the spaced area;

[0045] The fourth electrode includes a first segment and a second segment arranged in the longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in the circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in the circumferential direction of the second heating element; the second segment extends from the second heating element to the spacing area and defines a fourth electrical connection portion in the spacing area.

[0046] In the above aerosol generating device, the circuit selectively connects the four electrodes to the battery core, thereby selectively controlling one or both of the first heating element and the second heating element to perform heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] 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.

[0048] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0049] Figure 2 yes Figure 1 A structural schematic diagram of the heating mechanism from one perspective;

[0050] Figure 3 yes Figure 2 An exploded schematic diagram of a heating mechanism from one perspective;

[0051] Figure 4 yes Figure 2 An exploded schematic diagram of the heating mechanism from another perspective;

[0052] Figure 5 yes Figure 2 A cross-sectional schematic diagram of a heating mechanism from one perspective;

[0053] Figure 6 yes Figure 5 A structural diagram of the central heater from another perspective;

[0054] Figure 7 yes Figure 6 A structural diagram of the central heater from another perspective;

[0055] Figure 8 yes Figure 6An exploded diagram of the central heater from another perspective;

[0056] Fig. 9 yes Figure 6 Schematic diagram of the central heater after circumferential expansion. DETAILED DESCRIPTION

[0057] 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.

[0058] 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.

[0059] Further in an optional implementation, 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.

[0060] according to Figure 1 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.

[0061] The structure of the aerosol generating device 100 according to one embodiment of the present application can be seen in Figure 1 As shown, the overall appearance of the device is generally constructed in a longitudinal shape, and the aerosol generating device 100 includes:

[0062] a chamber having an opening 40 through which the aerosol-generating article 1000 can be removably received in the chamber;

[0063] A heating mechanism 300 is arranged at least partially around or bounding the chamber; when the aerosol generating article 1000 is received in the chamber, the heating mechanism 300 surrounds the aerosol generating article 1000 from the outside and heats the aerosol generating article 1000, so that the aerosol generating article 1000 releases a plurality of volatile compounds, and these volatile compounds are formed only by heating treatment;

[0064] A battery cell 10 for supplying power; more preferably, the battery cell 10 is a rechargeable DC battery cell 10 and can be charged by connecting to an external power source;

[0065] The circuit board 20 , such as a PCB board or an FPC board, is provided with a circuit for conducting current between the battery cell 10 and the heating mechanism 300 .

[0066] exist Figures 2 to 5 In the illustrated embodiment, the heating mechanism 300 is arranged to be tubular in shape, and the heating mechanism 300 surrounds or forms or defines a chamber for receiving the aerosol-generating article 1000. When the aerosol-generating article 1000 is received in the chamber, the heating mechanism 300 at least partially surrounds or encloses the aerosol-generating article 1000 and heats the aerosol-generating article 1000 from the periphery. Also, when the aerosol-generating article 1000 is received in the chamber, it is at least partially contained and retained in the heating mechanism 300.

[0067] exist Figures 2 to 5 In the illustrated embodiment, the heating mechanism 300 comprises:

[0068] The first supporting element 371 and the second supporting element 372 are arranged at intervals in the longitudinal direction; the first supporting element 371 and the second supporting element 372 are basically configured to be annular in shape, such as a PEEK ring, etc.;

[0069] The tubular heater 30 is arranged along the longitudinal extension of the heating mechanism 300 and is clamped or held between the first support element 371 and the second support element 372, so that the first support element 371 is supported at the first end 311 of the heater 30, and the second support element 372 is supported at the second end 312 of the heater 30;

[0070] A flexible first sealing member 361, such as an O-ring, is clamped or positioned between the first support member 371 and the first end 311 of the heater 30 to provide a seal therebetween;

[0071] A flexible second sealing member 362, such as a silicone O-ring, is clamped or positioned between the second support member 372 and the second end 312 of the heater 30 for providing a seal therebetween.

[0072] After assembly according to Figure 5 As shown, the second support element 372 at least partially extends from the second end 312 of the heater 30 into the heater 30 to define a stop portion of the chamber; when the aerosol generating article 1000 is extended into or received in the heater 30 for heating, the aerosol generating article 1000 abuts against the stop portion defined by the second support element 372 to provide a stop.

[0073] exist Figures 2 to 5 In the illustrated embodiment, the heating mechanism 300 further comprises:

[0074] The flexible heat-insulating material layer 381 is configured to be a tube-shaped heat-insulating material such as a flexible aerogel felt wound or wrapped around the heater 30, so as to provide heat insulation outside the heater 30;

[0075] The rigid insulation tube 382 defines a cavity inside, and the pressure of the cavity is lower than the external pressure so as to have a vacuum degree; the insulation tube 382 and / or the cavity surround or enclose the insulation material layer 381 to further provide thermal insulation outside the insulation material layer 381.

[0076] In some embodiments, the cavity of the heat-insulating tube 382 is filled with dry pure argon gas, which has a thermal conductivity of about one-third less than that of air at the same pressure and temperature, thereby effectively reducing heat transfer to the outside. In some embodiments, the wall of the heat-insulating tube 382 is made of a rigid material such as stainless steel.

[0077] In the embodiment, after assembly, the heat insulation tube 382 is clamped or held between the first support element 371 and the second support element 372; the heat insulation tube 382 at least partially surrounds the first support element 371 and the second support element 372 from the outside. The heat insulation tube 382 and the first support element 371 and / or the second support element 372 are tightly fitted with each other. And the flexible first sealing element 361 and the second sealing element 362 are against the inner surface of the heat insulation tube 382. Then, after assembly, an assembly gap or gap sealed from the upper and lower sides by the first sealing element 361 and the second sealing element 362 is formed or defined between the heat insulation tube 382 and the heater 30; to prevent the higher temperature gas between the heater 30 and the heat insulation tube 382 from propagating outward, and to prevent the hot air in the assembly gap or gap from flowing out. At the same time, the first sealing element 361 and the second sealing element 362 can also prevent the aerosol generated by the aerosol generating product 1000 in the heater 30 from entering the assembly gap between the insulation tube 382 and the heater 30, corroding the heating material or electrode material on the outer wall of the heater 30, thereby improving the reliability of the operation of the heater 30.

[0078] exist Figures 2 to 5 In the illustrated embodiment, the heating mechanism 300 further comprises:

[0079] The first electrical contact element 351 , the second electrical contact element 352 , the third electrical contact element 353 and the fourth electrical contact element 354 are coupled to the heater 30 to conductively connect the heater 30 to the circuit board 20 .

[0080] In some embodiments, the first electrical contact element 351, the second electrical contact element 352, the third electrical contact element 353 and the fourth electrical contact element 354 are made of metal or alloy materials with low resistivity; for example, in some implementations, the first electrical contact element 351, the second electrical contact element 352, the third electrical contact element 353 and the fourth electrical contact element 354 are made of beryllium copper C17200, which has good elasticity and high temperature resistance, and has the advantages of low contact resistance after surface gold plating.

[0081] In some embodiments, the first electrical contact element 351, the second electrical contact element 352, the third electrical contact element 353 and the fourth electrical contact element 354 are in the shape of a socket and abut against and combine with the second end 312 of the heater 30. Specifically, the applicant provided details about the shape and structure, assembly, fixation and elasticity of the first electrical contact element 351, the second electrical contact element 352, the third electrical contact element 353 and the fourth electrical contact element 354 in the earlier Chinese patent application No. CN215958354U, and the above document is incorporated herein by reference in its entirety. In assembly, the first electrical contact element 351, the second electrical contact element 352, the third electrical contact element 353 and the fourth electrical contact element 354 are elastically abutted and combined with the second end 312 of the heater 30 to form conduction, which is more convenient than welding the lead wire from the second end 312 of the heater 30 to the circuit board 20.

[0082] according to Figure 6 middle Fig. 9 As shown, the heater 30 is arranged to be tubular in shape, and a chamber for receiving the aerosol-generating article 1000 is formed or defined by at least a portion of the tubular hollow of the heater 30. When the aerosol-generating article 1000 is received in the heating mechanism 300, the heater 30 at least partially surrounds or encloses the aerosol-generating article 1000 and heats the aerosol-generating article 1000 from the periphery. Also, when the aerosol-generating article 1000 is received in the heating mechanism 300, at least a portion of the aerosol-generating article 1000 is accommodated and retained in the heater 30.

[0083] In some embodiments, the circumferential length or perimeter of the heater 30 is greater than the length of the heater 30 in the longitudinal direction. In some embodiments, the longitudinal length of the heater 30 does not exceed 15 mm or is less than 15 mm. In some embodiments, the heater 30 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 heater 30 may have a longitudinal length of 12 mm; the heater 30 may have an inner diameter of 7.6 mm.

[0084] according to Figures 5 to 9 In the illustrated embodiment, the heater 30 comprises:

[0085] a tubular substrate 31, wherein the inner hollow of the substrate 31 at least partially defines a chamber for accommodating and holding the aerosol generating article 1000; and,

[0086] The first heating element 32 and the second heating element 33 are formed or arranged on the substrate 31. In some embodiments, the first heating element 32 and / or the second heating element 33 are formed on the outer surface of the substrate 31 by deposition, spraying, printing or wrapping. Or in some other embodiments, the first heating element 32 and / or the second heating element 33 are formed on the inner surface of the substrate 31.

[0087] according to Figures 5 to 9 As shown, the first heating element 32 and the second heating element 33 are arranged at intervals in the longitudinal direction of the substrate 31. The first heating element 32 is closed in the circumferential direction of the heater 30; the first heating element 32 is a closed ring. The second heating element 33 is not closed in the circumferential direction of the heater 30; further, a notch 332 is defined on the second heating element 33 that passes through the second heating element 33 in the longitudinal direction, so that the second heating element 33 is a non-closed ring.

[0088] In some embodiments, the first heating element 32 and / or the second heating element 33 are coatings or thin layers formed on the substrate 31 by deposition, spraying, printing, etc. Alternatively, in some other embodiments, the first heating element 32 and / or the second heating element 33 are thin films wrapped or bonded to the substrate 31. Alternatively, in some other optional implementations, the first heating element 32 and / or the second heating element 33 of resistance may also be a heating film of resistance wound or bonded to the substrate 31.

[0089] In some embodiments, the thickness of the first heating element 32 and / or the second heating element 33 in the form of a resistive coating can preferably be controlled to be 10 μm to 300 μm; and the first heating element 32 and / or the second heating element 33 can be formed on the surface of the tubular substrate 31 by spraying them on the outer surface of the tubular substrate 31 by atmospheric plasma spraying and then curing them.

[0090] In some embodiments, the first heating element 32 and the second heating element 33 have substantially the same length. For example, in a specific embodiment, the length of the first heating element 32 and the length of the second heating element 33 are both 4 to 8 mm; for example, in a specific embodiment, the length of the first heating element 32 and / or the length of the second heating element 33 is 6.5 mm. Or in some other variations, the length of the first heating element 32 and / or the length of the second heating element 33 are different. Or in some other variations, the length of the first heating element 32 is less than the length of the second heating element 33.

[0091] Alternatively, in some other embodiments, the heater 30 may include only two infrared emitting layers, namely, the first heating element 32 and the second heating element 33. Alternatively, in some other embodiments, the heater 30 may include more heating layers, such as four, five, six or more heating layers arranged in sequence along the longitudinal direction of the substrate 31.

[0092] In some embodiments, the first heating element 32 and / or the second heating element 33 are resistive heating layers; by directing an electric current on the first heating element 32 and / or the second heating element 33, the first heating element 32 and / or the second heating element 33 can be heated by resistive Joule heat, thereby heating the aerosol generating article 1000. Also, in some embodiments, the first heating element 32 and / or the second heating element 33 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, nickel-chromium alloy, nickel-iron alloy, platinum, tungsten, silver, aluminum, titanium, molybdenum, manganese, or alloys containing them.

[0093] When the first heating element 32 and / or the second heating element 33 are heated by resistive heating, the material of the substrate 31 is a material with good thermal conductivity, such as ceramic, glass, surface-insulated metal or alloy such as anodized aluminum, aluminum alloy, copper alloy, stainless steel, etc. And in some embodiments, the thermal conductivity of the substrate 31 is at least 10W / mk, preferably or at least 100W / mk; or in some embodiments, the thermal conductivity of the substrate 31 is greater than 200W / mk or higher. In some embodiments, the substrate 31 includes metals suitable for the above high thermal conductivity such as aluminum, copper, titanium, or alloys containing at least one of them. In some embodiments, the wall thickness of the substrate 31 is between 0.1 and 0.5 mm; more specifically, for example, the wall thickness of the substrate 31 is between 0.15 and 0.2 mm.

[0094] In some other embodiments, the first heating element 32 and / or the second heating element 33 is an infrared emitting layer, such as an electrically induced infrared emitting layer; by directly providing a DC voltage to the first heating element 32 and / or the second heating element 33, the first heating element 32 and / or the second heating element 33 can be driven by the voltage to radiate infrared rays, thereby heating the aerosol generating article 1000. When the first heating element 32 and / or the second heating element 33 are used for heating by radiating infrared rays, the material of the substrate 31 is a material that is infrared-transmissive, such as quartz, glass, ceramic, etc. In some implementations, the first heating element 32 and / or the second heating element 33 for radiating infrared rays can be a coating made of a ceramic material such as zirconium, or Fe-Mn-Cu system, tungsten system, or transition metals and their oxides. For example, in some implementations, the first heating element 32 and / or the second heating element 33 for radiating infrared rays are composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, and Zn. These metal oxides can radiate far-infrared rays with heating effect when heated to an appropriate heating temperature.

[0095] In some embodiments, the first heating element 32 and the second heating element 33 are made of the same material, so that they have the same infrared radiation wavelength or infrared radiation efficiency when heating different sections of the aerosol raw product 1000. Or in some other embodiments, one of the first heating element 32 and the second heating element 33 is made of different materials, and the infrared emission spectra of the first heating element 32 and the second heating element 33 have different WLP (peak wavelength, the wavelength corresponding to the maximum radiation power), which can be suitable for the optimal absorption wavelength range of different organic components in the aerosol raw product 1000. Or in some other embodiments, the first heating element 32 and the second heating element 33 are made of different materials, and the first heating element 32 and the second heating element 33 have different infrared emission spectra and / or WLP.

[0096] according to Figures 5 to 9 In the illustrated embodiment, the heater 30 comprises:

[0097] The first end 311 and the second end 312 are separated from each other in the longitudinal direction; in implementation, the two ends of the substrate 31 in the length direction respectively define the first end 311 and the second end 312 of the heater 30; and the inner hollow of the substrate 31 at least defines a chamber for receiving the aerosol generating article 1000;

[0098] The first heating element 32 is arranged near the first end 311, and the second heating element 33 is arranged near the second end 312. Also, the outer surface of the substrate 31 is further defined as:

[0099] a spacing area 313 located between the first end 311 and the first heating element 32;

[0100] a spacing area 314, located between the first heating element 32 and the second heating element 33, so as to separate the first heating element 32 from the second heating element 33;

[0101] The spacing area 315 is located between the second heating element 33 and the second end 312 .

[0102] In some embodiments, along the longitudinal direction of the substrate 31, the spacing region 313 and / or the spacing region 314 have substantially the same size. For example, in some optional embodiments, the spacing region 313 and / or the spacing region 314 has a length of about 0.5 to 2 mm; more specifically, for example, the spacing region 313 and / or the spacing region 314 has a length of about 1.0 mm. In some embodiments, the length of the spacing region 315 is greater than the length of the spacing region 313 and / or the spacing region 314. Specifically, for example, the spacing region 315 has a length of about 2 to 5 mm.

[0103] according to Figures 5 to 9 In the illustrated embodiment, the heater 30 comprises:

[0104] The first electrode 341, the second electrode 342, the third electrode 343 and the fourth electrode 344 are used to guide the current on the first heating element 32 and the second heating element 33. In some embodiments, the first electrode 341 / the second electrode 342 / the third electrode 343 / the fourth electrode 344 are coatings formed by low resistivity electrode materials. Or in some other variations, the first electrode 341 /

[0105] The second electrode 342 / the third electrode 343 / the fourth electrode 344 can also be replaced by a thinner sheet electrode, which is formed on the heater 30 by welding or close contact. In some optional embodiments, the first electrode 341 / the second electrode 342 / the third electrode 343 / the fourth electrode 344 is made of low resistivity gold, silver, copper or their alloys.

[0106] In a specific arrangement, the first electrode 341 is at least partially combined with the first heating element 32; and the first electrode 341 is arranged to extend from the spacing area 313 to the spacing area 315, and the first electrode 341 passes through the notch 332 of the second heating element 33. The first electrode 341 has a first electrical connection portion 3411 located in the spacing area 315; the first electrical connection portion 3411 has a width greater than other portions, so as to allow the first electrical contact element 351 to contact and abut to form electrical conduction.

[0107] In a specific arrangement, the second electrode 342 is at least partially combined with the second heating element 33; the second electrode 342 is at least partially arranged or located on the first side of the notch 332, and is combined with the second heating element 33 on the first side of the notch 332 to form a conductive connection. The second electrode 342 is arranged to extend from the spacing area 314 to the spacing area 315, and has a second electrical connection portion 3421 located in the spacing area 315; the second electrical connection portion 3421 has a width greater than other portions, so as to allow the second electrical contact element 352 to contact and abut against to form a conductive connection.

[0108] In a specific arrangement, the third electrode 343 is at least partially combined with the second heating element 33; the third electrode 343 is at least partially arranged or located on the second side of the notch 332, and is combined with the second heating element 33 on the second side of the notch 332 to form a conductive connection. The third electrode 343 is arranged to extend from the spacing area 314 to the spacing area 315, and has a third electrical connection portion 3431 located in the spacing area 315; the third electrical connection portion 3431 has a width greater than other portions, so as to allow the third electrical contact element 353 to contact and abut against to form a conductive connection.

[0109] In the embodiment, the second electrical connection portion 3421 and the third electrical connection portion 3431 are opposite to each other in the radial direction of the heater 30 .

[0110] In a specific arrangement, the fourth electrode 344 is arranged to extend from the spacing area 313 to the spacing area 315. The fourth electrode 344 is combined with the first heating element 32 and the third heating element 33 at the same time to form a conductive connection. Specifically, the fourth electrode 344 includes a first section 3441 and a second section 3442 arranged in sequence along the longitudinal direction; wherein the first section 3441 is combined with the first heating element 32, and a portion of the second section 3442 is combined with the second heating element 33. A portion of the second section 3442 extends from the second heating element 33 to the spacing area 315 to form a fourth electrical connection portion 3443 for the fourth electrical contact element 354 to contact and abut to form a conductive connection.

[0111] In an embodiment, the width of the first section 3441 is smaller than the width of the second section 3442. In some embodiments, the first section 3441 has a width of about 0.5-1.5 mm; and, the first section 3441 has a width of about 1.0-2.0 mm.

[0112] In the embodiment, the fourth electrode 344 and the first electrode 341 are arranged opposite to each other in the radial direction of the heater 30. The fourth electrical connection portion 3443 and the first electrical connection portion 3411 are arranged opposite to each other in the radial direction of the heater 30.

[0113] After assembly, the first electrical contact element 351 is welded or elastically pressed against the first electrical connection portion 3411 of the first electrode 341, thereby forming a conduction with the first electrode 341; the first electrical contact element 351 is then connected to the circuit board 20 by welding a conductive lead or the like, thereby connecting the first electrode 341 to the circuit. Also, the second electrical contact element 352 is welded or elastically pressed against the second electrical connection portion 3421 of the second electrode 342, thereby forming a conduction with the second electrode 342; the second electrical contact element 352 is then connected to the circuit board 20 by welding a conductive lead or the like, thereby connecting the second electrode 342 to the circuit. Also, the third electrical contact element 353 is welded or elastically pressed against the third electrical connection portion 3431 of the third electrode 343, thereby forming a conduction with the third electrode 343; the third electrical contact element 353 is then connected to the circuit board 20 by welding a conductive lead or the like, thereby connecting the third electrode 343 to the circuit. Furthermore, the fourth electrical contact element 354 is welded or elastically abutted against the fourth electrical connection portion 3443 of the fourth electrode 343 to thereby form electrical conduction with the fourth electrode 343; the fourth electrical contact element 354 is then connected to the circuit board 20 by welding a conductive lead or the like, thereby connecting the fourth electrode 343 to the circuit.

[0114] exist Figures 5 to 9 In the illustrated embodiment, the first electrical connection portion 3411 and the fourth electrical connection portion 3443 have different shapes and sizes, so as to provide a shape indication for distinguishing or identifying them to the production and assembly personnel. For example, the first electrical connection portion 3411 has an increased width, so that the first electrical connection portion 3411 and the other parts of the first electrode 341 form a T-shaped shape; the width of the fourth electrical connection portion 3443 is the same as that of the second section 3442 and different from that of the first electrical connection portion 3411, so as to facilitate easy identification or distinguishing of the first electrical connection portion 3411 and the fourth electrical connection portion 3443 during production and assembly.

[0115] In an embodiment, the second electrical connection portion 3421 and / or the third electrical connection portion 3431 have shapes different from those of the first electrical connection portion 3411 and the fourth electrical connection portion 3443 , so as to provide identification or distinguishing instructions to production assemblers.

[0116] according to Figures 5 to 9 As shown, in the heater 30 having the above electrode arrangement, the first heating element 32 is divided into two heating regions S21 and S22 arranged in parallel between the first electrode 341 and the fourth electrode 344 in the circumferential direction. The heating region S21 and the heating region S22 are spaced apart in the circumferential direction of the heater 30; and the heating region S21 and the heating region S22 are opposite to each other in the radial direction of the heater 30.

[0117] according to Figures 5 to 9As shown, the second heating element 33 is circumferentially divided into a heating region S31 between the second electrode 342 and the fourth electrode 344, and a heating region S32 between the fourth electrode 344 and the third electrode 343. The heating region S31 and the heating region S32 are spaced apart in the circumferential direction of the heater 30.

[0118] according to Figures 5 to 9 As shown, in the heater 30 having the above electrode arrangement, the circuit board 20 can selectively control one of the first heating element 32 and the second heating element 33 to heat up individually during use; and the circuit board 20 can also selectively control the first heating element 32 and the second heating element 33 to heat up simultaneously in series or in parallel.

[0119] Specifically, for example, in some embodiments, the circuit can electrically connect one of the first electrode 341 and the fourth electrode 344 to the positive electrode of the battery cell 10 and the other to the negative electrode of the battery cell 10, so that only a circumferential current is formed between the first electrode 341 and the fourth electrode 344 on the first heating element 32, thereby enabling the first heating element 32 to start heating alone. And in this embodiment, the heating area S21 and the heating area S22 of the first heating element 32 are heated in parallel at the same time.

[0120] Specifically, for example, in some embodiments, the circuit can electrically connect the second electrode 342 and the third electrode 343 to the positive electrode of the battery cell 10 at the same time, and electrically connect the fourth electrode 344 to the negative electrode of the battery cell 10, so as to form a circumferential current only on the second heating element 33, thereby enabling the second heating element 33 to start heating alone. And in this embodiment, the heating area S31 and the heating area S32 of the second heating element 33 are heated in parallel at the same time.

[0121] Specifically, for example, in some embodiments, the circuit can electrically connect one of the second electrode 342 and the third electrode 343 to the positive electrode of the battery cell 10 and the other to the negative electrode of the battery cell 10, so as to form a circumferential current only on the second heating element 33, thereby enabling the second heating element 33 to start heating alone. And in this embodiment, the heating area S31 and the heating area S32 of the second heating element 33 are heated in series and at the same time.

[0122] Specifically, for example, in some embodiments, the circuit can simultaneously guide current on the first heating element 32 and the second heating element 33 by simultaneously electrically connecting the first electrode 341, the second electrode 342, and the third electrode 343 to the positive electrode of the battery cell 10, and electrically connecting the fourth electrode 344 to the negative electrode of the battery cell 10, so that the first heating element 32 and the second heating element 33 start heating simultaneously. In this embodiment, the first heating element 32 and the second heating element 33 are heated simultaneously in parallel.

[0123] Specifically, for example, in some embodiments, the circuit can be electrically connected to the positive electrode of the battery cell 10 by connecting the first electrode 341 to the positive electrode, and the second electrode 342 and the third electrode 343 to the negative electrode of the battery cell 10 at the same time, and the fourth electrode 344 is not connected to the circuit or is not connected to the battery cell 10; at this time, the fourth electrode 344 only provides a series connection between the first heating element 32 and the second heating element 33 during operation. In this embodiment, the first heating element 32 and the second heating element 33 are heated in series at the same time. And in this embodiment, the heating area S21 and the heating area S22 of the first heating element 32 work in parallel; and the heating area S31 and the heating area S32 of the second heating element 33 work in parallel.

[0124] according to Figures 5 to 9 As shown, at least one or more first empty electrodes 321 extending in the longitudinal direction are arranged on the first heating element 32, and the plurality of first empty electrodes 321 are arranged at intervals in the circumferential direction; and at least one of the plurality of first empty electrodes 321 is combined with the heating area S21 of the first heating element 32, and at least one is combined with the heating area S22 of the first heating element 32. The plurality of first empty electrodes 321 basically extend from the spacing area 313 to the spacing area 314. And, the plurality of first empty electrodes 321 are only used to combine with the surface of the first heating element 32, so as to adjust the resistance value or power of the heating area S21 and / or the heating area S22 of the first heating element 32.

[0125] according to Figures 5 to 9 As shown, at least one or more second empty electrodes 331 extending in the longitudinal direction are arranged on the second heating element 33, and the plurality of second empty electrodes 331 are arranged at intervals in the circumferential direction; and at least one of the plurality of second empty electrodes 331 is combined with the heating area S31 of the second heating element 33, and at least one is combined with the heating area S32 of the second heating element 33. The plurality of second empty electrodes 331 basically extend from the spacing area 314 to the spacing area 315. And, the plurality of second empty electrodes 331 are only used to combine with the surface of the second heating element 33, so as to adjust the resistance value or power of the heating area S31 and / or the heating area S32 of the second heating element 33.

[0126] In some embodiments, the width of the first empty electrode 321 and / or the second empty electrode 331 is less than 3 mm. In some specific embodiments, the width of the first empty electrode 321 and / or the second empty electrode 331 is between 0.5 and 2.0 mm.

[0127] In some embodiments, the width of the second empty electrode 331 is different from the width of the first empty electrode 321. Thus, when the first heating element 31 and the second heating element 32 are working at the same time, the second heating element 32 has a different resistance value or power than the first heating element 31. For example, the width of the second empty electrode 331 is greater than the width of the first empty electrode 321, so that when the first heating element 31 and the second heating element 32 are working at the same time, the second heating element 32 has a smaller resistance value and a larger power. For example, in some specific embodiments, the width of the first empty electrode 321 is about 1.0 mm; the width of the second empty electrode 331 is about 1.5 mm.

[0128] 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 for receiving the aerosol generating article; a first heating element and a second heating element disposed around the chamber and spaced longitudinally of the chamber for heating the aerosol-generating article; a first electrode coupled to the first heating element; A second electrode and a third electrode are coupled to the second heating element at intervals along a circumferential direction of the second heating element; a fourth electrode, comprising a first section and a second section arranged in a longitudinal direction; the first section is coupled to the first heating element and is spaced apart from the first electrode in a circumferential direction of the first heating element; the second section is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in a circumferential direction of the second heating element; Battery cells, used for power supply; A circuit connects at least two of the first electrode, the second electrode, the third electrode, and the fourth electrode to the battery cell, thereby providing power of the battery cell to the first heating element and / or the second heating element.

2. The aerosol generating device according to claim 1, characterized in that The second heating element is open in the circumferential direction and defines a gap passing through the second heating element in the longitudinal direction; The second electrode is located at a first side of the notch, and the third electrode is located at a second side of the notch.

3. The aerosol generating device according to claim 2, characterized in that The first electrode passes through the gap.

4. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The width of the first section is different from the width of the second section.

5. The aerosol generating device according to any one of claims 1 to 3, characterized in that: Also includes: a substantially tubular base at least partially surrounding or defining the chamber; The first heating element and / or the second heating element are formed or bonded to the substrate.

6. The aerosol generating device according to claim 5, characterized in that The substrate comprises: a first end and a second end opposite to each other in the longitudinal direction; the second heating element is closer to the second end than the first heating element and has a spacing area between the second end and the second heating element; The first electrode extends from the first heating element to the spacing area and defines a first electrical connection portion for connecting the circuit in the spacing area; and / or, the second electrode extends from the second heating element to the spacing area and defines a second electrical connection portion for connecting the circuit in the spacing area; and / or, the third electrode extends from the second heating element to the spacing area and defines a third electrical connection portion for connecting the circuit in the spacing area; and / or, the fourth electrode extends from the first heating element to the spacing area and defines a fourth electrical connection portion for connecting the circuit in the spacing area.

7. The aerosol generating device according to claim 6, characterized in that The first electrical connection portion has a shape different from that of the fourth electrical connection portion, so as to provide a shape indication for distinguishing or identifying the first electrical connection portion and the fourth electrical connection portion.

8. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The circuit is configured to connect one of the first electrode and the fourth electrode to the positive terminal of the battery cell and the other to the negative terminal of the battery cell, thereby providing power of the battery cell to the first heating element so that the first heating element alone starts heating.

9. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The circuit is configured to connect one of the positive and negative electrodes of the battery cell to the fourth electrode and the other of the positive and negative electrodes to the second electrode and the third electrode at the same time, thereby providing power of the battery cell to the second heating element so that the second heating element alone starts heating.

10. The aerosol generating device according to any one of claims 1 to 3, characterized in that: The circuit is configured to connect one of the positive and negative electrodes of the battery cell to the fourth electrode and the other to the first electrode, the second electrode and the third electrode at the same time, thereby enabling the first heating element and the second heating element to start heating in parallel at the same time.

11. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber for receiving the aerosol generating article; A first heating element and a second heating element are arranged around the chamber and spaced apart in the longitudinal direction of the chamber for heating the aerosol generating article; the second heating element is non-closed in the circumferential direction and has a notch passing through the second heating element in the longitudinal direction; A first electrode, a second electrode, a third electrode and a fourth electrode for guiding current on the first heating element and the second heating element; wherein the first electrode is at least partially coupled to the first heating element and passes through the gap; the second electrode is coupled to the second heating element and is located on a first side of the gap; The third electrode is coupled to the second heating element and is located on the second side of the notch; the fourth electrode includes a first segment and a second segment arranged in the longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in the circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in the circumferential direction of the second heating element.

12. An aerosol generating device, configured to heat an aerosol generating article to generate an aerosol; characterized in that: include: a chamber for receiving the aerosol generating article; a substantially tubular body at least partially surrounding or defining the chamber; the body comprising a first end and a second end opposite to each other in a longitudinal direction; A first heating element and a second heating element are arranged on the substrate at intervals for heating the aerosol generating article; the second heating element is closer to the second end than the first heating element and forms or defines a spacing area with the second end; a first electrode, a second electrode, a third electrode and a fourth electrode for conducting current on the first heating element and the second heating element; wherein, The first electrode is coupled to the first heating element and extends from the first heating element to the spacing area, and defines a first electrical connection portion in the spacing area; The second electrode is coupled to the second heating element and extends from the second heating element to the spacing area, and defines a second electrical connection portion in the spacing area; The third electrode is coupled to the second heating element and spaced apart from the second electrode, and the third electrode extends from the second heating element to the spaced area and defines a third electrical connection portion in the spaced area; The fourth electrode includes a first segment and a second segment arranged in the longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in the circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in the circumferential direction of the second heating element; the second segment extends from the second heating element to the spacing area and defines a fourth electrical connection portion in the spacing area.

13. A heater for an aerosol generating device, characterized in that: include: A substantially tubular body having a first end and a second end opposite to each other in a longitudinal direction; A first heating element and a second heating element are arranged on the substrate at intervals, at least partially surrounding the substrate; the second heating element is closer to the second end than the first heating element, and a spacing area is formed or defined between the second heating element and the second end; a first electrode, a second electrode, a third electrode and a fourth electrode for conducting current on the first heating element and the second heating element; wherein, The first electrode is coupled to the first heating element and extends from the first heating element to the spacing area, and defines a first electrical connection portion in the spacing area; The second electrode is coupled to the second heating element and extends from the second heating element to the spacing area, and defines a second electrical connection portion in the spacing area; The third electrode is coupled to the second heating element and spaced apart from the second electrode, and the third electrode extends from the second heating element to the spaced area and defines a third electrical connection portion in the spaced area; The fourth electrode includes a first segment and a second segment arranged in the longitudinal direction; the first segment is coupled to the first heating element and is spaced apart from the first electrode in the circumferential direction of the first heating element; the second segment is coupled to the second heating element and is spaced apart from the second electrode and / or the third electrode in the circumferential direction of the second heating element; the second segment extends from the second heating element to the spacing area and defines a fourth electrical connection portion in the spacing area.

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